Fossil

All of the source code for fossil is contained in the src/ subdirectory.
But there is a lot of generated code, so you will probably want to
use the Makefile.  To do a complete build, just type:

   make

That should work out-of-the-box on Macs and Linux systems. If you are
building on a Windows box, install MinGW as well as MinGW's make (or
MSYS). You can then type:

   make -f Makefile.w32

If you have trouble, or you want to do something fancy, just look at
top level makefile. There are 6 configuration options that are all well
commented. Instead of editing the Makefile, consider copying the Makefile
to an alternative name such as "GNUMakefile", "BSDMakefile", or "makefile"
and editing the copy.

Out of source builds?
--------------------------------------------------------------------------

An out of source build is pretty easy:

  1. Make a new directory to do the builds in.
  2. Copy "Makefile" from the source into the build directory and
  modify the SRCDIR macro along the lines of:

All of the source code for fossil is contained in the src/ subdirectory.
But there is a lot of generated code, so you will probably want to
use the Makefile.  To do a complete build on unix, just type:

   make

On a windows box, use one of the Makefiles in the win/ subdirectory,
according to your compiler and environment.  For example:


   make -f win/Makefile.w32

If you have trouble, or you want to do something fancy, just look at
top level makefile. There are 6 configuration options that are all well
commented. Instead of editing the Makefile, consider copying the Makefile
to an alternative name such as "GNUMakefile", "BSDMakefile", or "makefile"
and editing the copy.


BUILDING OUTSIDE THE SOURCE TREE

An out of source build is pretty easy:

  1. Make a new directory to do the builds in.
  2. Copy "Makefile" from the source into the build directory and
  modify the SRCDIR macro along the lines of:

#!/usr/bin/make




#
#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = ./src

................................................................................
OBJDIR = ./bld

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = gcc -g -O2

#### The suffix to add to executable files.  ".exe" for windows.
#    Nothing for unix.
#
E =

#### C Compile and options for use in building executables that 
#    will run on the target platform.  This is usually the same
#    as BCC, unless you are cross-compiling.  This C compiler builds
#    the finished binary for fossil.  The BCC compiler above is used
................................................................................
#    chroot jail.
#
LIB = -lz $(LDFLAGS)

# If using HTTPS:
LIB += -lcrypto -lssl

#### Tcl shell for use in running the fossil testsuite.

#
TCLSH = tclsh

# You should not need to change anything below this line
###############################################################################
#
# Automatic platform-specific options.

#!/usr/bin/make
#
# This is the top-level makefile for Fossil when the build is occurring
# on a unix platform.  This works out-of-the-box on most unix platforms.
# But you are free to vary some of the definitions if desired.
#
#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = ./src

................................................................................
OBJDIR = ./bld

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = gcc

#### The suffix to add to final executable file.  When cross-compiling
#    to windows, make this ".exe".  Otherwise leave it blank.
#
E =

#### C Compile and options for use in building executables that 
#    will run on the target platform.  This is usually the same
#    as BCC, unless you are cross-compiling.  This C compiler builds
#    the finished binary for fossil.  The BCC compiler above is used
................................................................................
#    chroot jail.
#
LIB = -lz $(LDFLAGS)

# If using HTTPS:
LIB += -lcrypto -lssl

#### Tcl shell for use in running the fossil testsuite.  If you do not
#    care about testing the end result, this can be blank.
#
TCLSH = tclsh

# You should not need to change anything below this line
###############################################################################
#
# Automatic platform-specific options.

#!/usr/bin/make
#
#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = ./src
OBJDIR = ./wobj

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = gcc -g -O2

#### The suffix to add to executable files.  ".exe" for windows.
#    Nothing for unix.
#
E = .exe

#### Enable HTTPS support via OpenSSL (links to libssl and libcrypto)
#
# FOSSIL_ENABLE_SSL=1

#### C Compile and options for use in building executables that 
#    will run on the target platform.  This is usually the same
#    as BCC, unless you are cross-compiling.  This C compiler builds
#    the finished binary for fossil.  The BCC compiler above is used
#    for building intermediate code-generator tools.
#
#TCC = gcc -O6
#TCC = gcc -g -O0 -Wall -fprofile-arcs -ftest-coverage
#TCC = gcc -g -Os -Wall
#TCC = gcc -g -Os -Wall -DFOSSIL_I18N=0 -L/usr/local/lib -I/usr/local/include
TCC = gcc -Os -Wall -DFOSSIL_I18N=0 -L/mingw/lib -I/mingw/include

# With HTTPS support
ifdef FOSSIL_ENABLE_SSL
TCC += -DFOSSIL_ENABLE_SSL=1
endif

#### Extra arguments for linking the finished binary.  Fossil needs
#    to link against the Z-Lib compression library.  There are no
#    other dependencies.  We sometimes add the -static option here
#    so that we can build a static executable that will run in a
#    chroot jail.
#
#LIB = -lz
#LIB = -lz -lws2_32
LIB = -lmingwex -lz -lws2_32
# OpenSSL:
ifdef FOSSIL_ENABLE_SSL
LIB += -lcrypto -lssl
endif

#### Tcl shell for use in running the fossil testsuite.
#
TCLSH = tclsh

#### Include a configuration file that can override any one of these settings.
#
-include config.w32

# You should not need to change anything below this line
###############################################################################
include $(SRCDIR)/main.mk

; It will install notepad.exe into a directory that the user selects,
;

; The name of the installer
Name "Fossil"

; The file to write
OutFile "fossil-setup-7c0bd3ee08.exe"

; The default installation directory
InstallDir $PROGRAMFILES\Fossil
; Registry key to check for directory (so if you install again, it will 
; overwrite the old one automatically)
InstallDirRegKey HKLM SOFTWARE\Fossil "Install_Dir"

................................................................................
DirText "Choose a directory to install in to:"

; The stuff to install
Section "Fossil (required)"
  ; Set output path to the installation directory.
  SetOutPath $INSTDIR
  ; Put file there
  File ".\build\fossil.exe"
  ; Write the installation path into the registry
  WriteRegStr HKLM SOFTWARE\Fossil "Install_Dir" "$INSTDIR"
  ; Write the uninstall keys for Windows
  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Fossil" "DisplayName" "Fossil (remove only)"
  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Fossil" "UninstallString" '"$INSTDIR\uninstall.exe"'
  WriteUninstaller "uninstall.exe"
SectionEnd

; It will install notepad.exe into a directory that the user selects,
;

; The name of the installer
Name "Fossil"

; The file to write
OutFile "fossil-setup.exe"

; The default installation directory
InstallDir $PROGRAMFILES\Fossil
; Registry key to check for directory (so if you install again, it will 
; overwrite the old one automatically)
InstallDirRegKey HKLM SOFTWARE\Fossil "Install_Dir"

................................................................................
DirText "Choose a directory to install in to:"

; The stuff to install
Section "Fossil (required)"
  ; Set output path to the installation directory.
  SetOutPath $INSTDIR
  ; Put file there
  File ".\fossil.exe"
  ; Write the installation path into the registry
  WriteRegStr HKLM SOFTWARE\Fossil "Install_Dir" "$INSTDIR"
  ; Write the uninstall keys for Windows
  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Fossil" "DisplayName" "Fossil (remove only)"
  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Fossil" "UninstallString" '"$INSTDIR\uninstall.exe"'
  WriteUninstaller "uninstall.exe"
SectionEnd

/*
** Set to true if files whose names begin with "." should be
** included when processing a recursive "add" command.
*/
static int includeDotFiles = 0;

/*
** Add a single file
*/
static void add_one_file(const char *zName, int vid, Blob *pOmit){
  Blob pathname;
  const char *zPath;

  file_tree_name(zName, &pathname, 1);
  zPath = blob_str(&pathname);
  if( strcmp(zPath, "_FOSSIL_")==0
   || strcmp(zPath, "_FOSSIL_-journal")==0
   || strcmp(zPath, "_FOSSIL_-wal")==0
   || strcmp(zPath, "_FOSSIL_-shm")==0
   || strcmp(zPath, ".fos")==0
   || strcmp(zPath, ".fos-journal")==0
   || strcmp(zPath, ".fos-wal")==0
   || strcmp(zPath, ".fos-shm")==0
   || blob_compare(&pathname, pOmit)==0
  ){
    fossil_warning("cannot add %s", zPath);
  }else{
    if( !file_is_simple_pathname(zPath) ){
      fossil_fatal("filename contains illegal characters: %s", zPath);
    }
#if defined(_WIN32)
    if( db_exists("SELECT 1 FROM vfile"
                  " WHERE pathname=%Q COLLATE nocase", zPath) ){
      db_multi_exec("UPDATE vfile SET deleted=0"
                    " WHERE pathname=%Q COLLATE nocase", zPath);
    }
#else
    if( db_exists("SELECT 1 FROM vfile WHERE pathname=%Q", zPath) ){
      db_multi_exec("UPDATE vfile SET deleted=0 WHERE pathname=%Q", zPath);
    }
#endif
    else{
      db_multi_exec(
        "INSERT INTO vfile(vid,deleted,rid,mrid,pathname)"
        "VALUES(%d,0,0,0,%Q)", vid, zPath);
    }
    printf("ADDED  %s\n", zPath);
  }
  blob_reset(&pathname);













}

/*
** All content of the zDir directory to the SFILE table.
*/
void add_directory_content(const char *zDir){
  DIR *d;
  int origSize;
  struct dirent *pEntry;
  Blob path;

  blob_zero(&path);
  blob_append(&path, zDir, -1);
  origSize = blob_size(&path);
  d = opendir(zDir);
  if( d ){
    while( (pEntry=readdir(d))!=0 ){
      char *zPath;
      if( pEntry->d_name[0]=='.' ){
        if( !includeDotFiles ) continue;
        if( pEntry->d_name[1]==0 ) continue;
        if( pEntry->d_name[1]=='.' && pEntry->d_name[2]==0 ) continue;
      }
      blob_appendf(&path, "/%s", pEntry->d_name);
      zPath = blob_str(&path);
      if( file_isdir(zPath)==1 ){
        add_directory_content(zPath);
      }else if( file_isfile(zPath) ){
        db_multi_exec("INSERT INTO sfile VALUES(%Q)", zPath);
      }
      blob_resize(&path, origSize);
    }
  }
  closedir(d);
  blob_reset(&path);
}

/*
** Add all content of a directory.
*/
void add_directory(const char *zDir, int vid, Blob *pOmit){
  Stmt q;
  add_directory_content(zDir);
  db_prepare(&q, "SELECT x FROM sfile ORDER BY x");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    add_one_file(zName, vid, pOmit);
  }
  db_finalize(&q);
  db_multi_exec("DELETE FROM sfile");



















}

/*
** COMMAND: add
**
** Usage: %fossil add FILE...
**
** Make arrangements to add one or more files to the current checkout
** at the next commit.
**
** When adding files recursively, filenames that begin with "." are
** excluded by default.  To include such files, add the "--dotfiles"
** option to the command-line.








*/
void add_cmd(void){
  int i;
  int vid;
  Blob repo;







  includeDotFiles = find_option("dotfiles",0,0)!=0;
  db_must_be_within_tree();



  vid = db_lget_int("checkout",0);
  if( vid==0 ){
    fossil_panic("no checkout to add to");
  }
  db_begin_transaction();
  if( !file_tree_name(g.zRepositoryName, &repo, 0) ){
    blob_zero(&repo);
  }
  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
#if defined(_WIN32)
  db_multi_exec(
     "CREATE INDEX IF NOT EXISTS vfile_pathname "
     "  ON vfile(pathname COLLATE nocase)"
  );
#endif




  for(i=2; i<g.argc; i++){
    char *zName;
    int isDir;


    zName = mprintf("%/", g.argv[i]);


    isDir = file_isdir(zName);
    if( isDir==1 ){
      add_directory(zName, vid, &repo);

    }else if( isDir==0 ){
      fossil_fatal("not found: %s", zName);
    }else if( access(zName, R_OK) ){
      fossil_fatal("cannot open %s", zName);
    }else{
      add_one_file(zName, vid, &repo);
    }

    free(zName);
  }
  db_end_transaction(0);
}

/*
** Remove all contents of zDir
*/
void del_directory_content(const char *zDir){
  DIR *d;
  int origSize;
  struct dirent *pEntry;
  Blob path;

  blob_zero(&path);
  blob_append(&path, zDir, -1);
  origSize = blob_size(&path);
  d = opendir(zDir);
  if( d ){
    while( (pEntry=readdir(d))!=0 ){
      char *zPath;
      if( pEntry->d_name[0]=='.'){
        if( !includeDotFiles ) continue;
        if( pEntry->d_name[1]==0 ) continue;
        if( pEntry->d_name[1]=='.' && pEntry->d_name[2]==0 ) continue;
      }
      blob_appendf(&path, "/%s", pEntry->d_name);
      zPath = blob_str(&path);
      if( file_isdir(zPath)==1 ){
        del_directory_content(zPath);
      }else if( file_isfile(zPath) ){
        char *zFilePath;
        Blob pathname;
        file_tree_name(zPath, &pathname, 1);
        zFilePath = blob_str(&pathname);
        if( !db_exists(
            "SELECT 1 FROM vfile WHERE pathname=%Q AND NOT deleted", zFilePath)

        ){
          printf("SKIPPED  %s\n", zPath);
        }else{
          db_multi_exec("UPDATE vfile SET deleted=1 WHERE pathname=%Q", zPath);
          printf("DELETED  %s\n", zPath);
        }
        blob_reset(&pathname);
      }
      blob_resize(&path, origSize);

    }


  }
  closedir(d);
  blob_reset(&path);
}

/*
** COMMAND: rm
** COMMAND: delete
**
** Usage: %fossil rm FILE...
**    or: %fossil delete FILE...
**
** Remove one or more files from the tree.
**
** This command does not remove the files from disk.  It just marks the
** files as no longer being part of the project.  In other words, future
** changes to the named files will not be versioned.



*/
void delete_cmd(void){
  int i;
  int vid;


  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  if( vid==0 ){
    fossil_panic("no checkout to remove from");
  }
  db_begin_transaction();

  for(i=2; i<g.argc; i++){

    char *zName;

    zName = mprintf("%/", g.argv[i]);
    if( file_isdir(zName) == 1 ){
      del_directory_content(zName);
    } else {
      char *zPath;

      Blob pathname;
      file_tree_name(zName, &pathname, 1);
      zPath = blob_str(&pathname);
      if( !db_exists(
               "SELECT 1 FROM vfile WHERE pathname=%Q AND NOT deleted", zPath) ){
        fossil_fatal("not in the repository: %s", zName);
      }else{





































































































        db_multi_exec("UPDATE vfile SET deleted=1 WHERE pathname=%Q", zPath);

        printf("DELETED  %s\n", zPath);

      }
      blob_reset(&pathname);
    }
    free(zName);



  }
  db_multi_exec("DELETE FROM vfile WHERE deleted AND rid=0");
  db_end_transaction(0);
}


/*
** Rename a single file.
**
** The original name of the file is zOrig.  The new filename is zNew.
*/
static void mv_one_file(int vid, const char *zOrig, const char *zNew){
................................................................................
/*
** COMMAND: mv
** COMMAND: rename
**
** Usage: %fossil mv|rename OLDNAME NEWNAME
**    or: %fossil mv|rename OLDNAME... DIR
**
** Move or rename one or more files within the tree

**
** This command does not rename the files on disk.  This command merely
** records the fact that filenames have changed so that appropriate notations
** can be made at the next commit/checkin.




*/
void mv_cmd(void){
  int i;
  int vid;
  char *zDest;
  Blob dest;
  Stmt q;
................................................................................
      int nOrig;
      file_tree_name(g.argv[i], &orig, 1);
      zOrig = blob_str(&orig);
      nOrig = blob_size(&orig);
      db_prepare(&q,
         "SELECT pathname FROM vfile"
         " WHERE vid=%d"
         "   AND (pathname='%s' OR pathname GLOB '%s/*')"
         " ORDER BY 1",
         vid, zOrig, zOrig
      );
      while( db_step(&q)==SQLITE_ROW ){
        const char *zPath = db_column_text(&q, 0);
        int nPath = db_column_bytes(&q, 0);
        const char *zTail;
        if( nPath==nOrig ){
          zTail = file_tail(zPath);

/*
** Set to true if files whose names begin with "." should be
** included when processing a recursive "add" command.
*/
static int includeDotFiles = 0;

/*
** This routine returns the names of files in a working checkout that
** are created by Fossil itself, and hence should not be added, deleted,
** or merge, and should be omitted from "clean" and "extra" lists.
**
** Return the N-th name.  The first name has N==0.  When all names have
** been used, return 0.
*/
const char *fossil_reserved_name(int N){
  /* Possible names of the local per-checkout database file and
  ** its associated journals
  */
  static const char *azName[] = {
     "_FOSSIL_",
     "_FOSSIL_-journal",
     "_FOSSIL_-wal",
     "_FOSSIL_-shm",
     ".fos",
     ".fos-journal",
     ".fos-wal",
     ".fos-shm",
  };

  /* Names of auxiliary files generated by SQLite when the "manifest"
  ** properity is enabled
  */
  static const char *azManifest[] = {
     "manifest",
     "manifest.uuid",
  };

  if( N>=0 && N<count(azName) ) return azName[N];
  if( N>=count(azName) && N<count(azName)+count(azManifest)
      && db_get_boolean("manifest",0) ){
    return azManifest[N-count(azName)];
  }
  return 0;
}

/*
** Return a list of all reserved filenames as an SQL list.
*/
const char *fossil_all_reserved_names(void){
  static char *zAll = 0;
  if( zAll==0 ){
    Blob x;
    int i;
    const char *z;
    blob_zero(&x);
    for(i=0; (z = fossil_reserved_name(i))!=0; i++){
      if( i>0 ) blob_append(&x, ",", 1);
      blob_appendf(&x, "'%s'", z);
    }
    zAll = blob_str(&x);
  }
  return zAll;
}

/*
** Add a single file named zName to the VFILE table with vid.
**
** Omit any file whose name is pOmit.
*/
static int add_one_file(
  const char *zPath,   /* Tree-name of file to add. */
  int vid              /* Add to this VFILE */
){
  if( !file_is_simple_pathname(zPath) ){
    fossil_fatal("filename contains illegal characters: %s", zPath);
  }
#if defined(_WIN32)
  if( db_exists("SELECT 1 FROM vfile"
                " WHERE pathname=%Q COLLATE nocase", zPath) ){
    db_multi_exec("UPDATE vfile SET deleted=0"
                  " WHERE pathname=%Q COLLATE nocase", zPath);
  }
#else
  if( db_exists("SELECT 1 FROM vfile WHERE pathname=%Q", zPath) ){
    db_multi_exec("UPDATE vfile SET deleted=0 WHERE pathname=%Q", zPath);
  }
#endif
  else{
    char *zFullname = mprintf("%s%s", g.zLocalRoot, zPath);
    db_multi_exec(
      "INSERT INTO vfile(vid,deleted,rid,mrid,pathname,isexe)"
      "VALUES(%d,0,0,0,%Q,%d)",
      vid, zPath, file_isexe(zFullname));
    fossil_free(zFullname);
  }
  printf("ADDED  %s\n", zPath);
  return 1;
}

/*
** Add all files in the sfile temp table.
**
** Automatically exclude the repository file.
*/
static int add_files_in_sfile(int vid){
  const char *zRepo;        /* Name of the repository database file */
  int nAdd = 0;             /* Number of files added */
  int i;                    /* Loop counter */
  const char *zReserved;    /* Name of a reserved file */
  Blob repoName;            /* Treename of the repository */
  Stmt loop;                /* SQL to loop over all files to add */
 
  if( !file_tree_name(g.zRepositoryName, &repoName, 0) ){
    blob_zero(&repoName);
    zRepo = "";
  }else{
    zRepo = blob_str(&repoName);
  }
  db_prepare(&loop, "SELECT x FROM sfile ORDER BY x");
  while( db_step(&loop)==SQLITE_ROW ){
    const char *zToAdd = db_column_text(&loop, 0);
    if( fossil_strcmp(zToAdd, zRepo)==0 ) continue;
    for(i=0; (zReserved = fossil_reserved_name(i))!=0; i++){
      if( fossil_strcmp(zToAdd, zReserved)==0 ) break;
    }
    if( zReserved ) continue;
    nAdd += add_one_file(zToAdd, vid);
  }
  db_finalize(&loop);
  blob_reset(&repoName);
  return nAdd;
}

/*
** COMMAND: add
**
** Usage: %fossil add ?OPTIONS? FILE1 ?FILE2 ...?
**
** Make arrangements to add one or more files or directories to the
** current checkout at the next commit.
**
** When adding files or directories recursively, filenames that begin
** with "." are excluded by default.  To include such files, add
** the "--dotfiles" option to the command-line.
**
** The --ignore option is a comma-separate list of glob patterns for files
** to be excluded.  Example:  '*.o,*.obj,*.exe'  If the --ignore option
** does not appear on the command line then the "ignore-glob" setting is
** used.
**
** SUMMARY: fossil add ?OPTIONS? FILE1 ?FILE2 ...?
** Options: --dotfiles, --ignore
*/
void add_cmd(void){



  int i;                     /* Loop counter */
  int vid;                   /* Currently checked out version */
  int nRoot;                 /* Full path characters in g.zLocalRoot */
  const char *zIgnoreFlag;   /* The --ignore option or ignore-glob setting */
  Glob *pIgnore;             /* Ignore everything matching this glob pattern */

  zIgnoreFlag = find_option("ignore",0,1);
  includeDotFiles = find_option("dotfiles",0,0)!=0;
  db_must_be_within_tree();
  if( zIgnoreFlag==0 ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }
  vid = db_lget_int("checkout",0);
  if( vid==0 ){
    fossil_panic("no checkout to add to");
  }
  db_begin_transaction();



  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
#if defined(_WIN32)
  db_multi_exec(
     "CREATE INDEX IF NOT EXISTS vfile_pathname "
     "  ON vfile(pathname COLLATE nocase)"
  );
#endif
  pIgnore = glob_create(zIgnoreFlag);
  nRoot = strlen(g.zLocalRoot);
  
  /* Load the names of all files that are to be added into sfile temp table */
  for(i=2; i<g.argc; i++){
    char *zName;
    int isDir;
    Blob fullName;


    file_canonical_name(g.argv[i], &fullName);
    zName = blob_str(&fullName);
    isDir = file_isdir(zName);
    if( isDir==1 ){

      vfile_scan(&fullName, nRoot-1, includeDotFiles, pIgnore);
    }else if( isDir==0 ){
      fossil_fatal("not found: %s", zName);
    }else if( access(zName, R_OK) ){
      fossil_fatal("cannot open %s", zName);
    }else{
      char *zTreeName = &zName[nRoot];

      db_multi_exec(
         "INSERT OR IGNORE INTO sfile(x)"



































         "  SELECT %Q WHERE NOT EXISTS(SELECT 1 FROM vfile WHERE pathname=%Q)",
         zTreeName, zTreeName
      );




    }
    blob_reset(&fullName);
  }

  glob_free(pIgnore);

  add_files_in_sfile(vid);  
  db_end_transaction(0);
}




/*
** COMMAND: rm
** COMMAND: delete
**
** Usage: %fossil rm FILE1 ?FILE2 ...?
**    or: %fossil delete FILE1 ?FILE2 ...?
**
** Remove one or more files or directories from the repository.
**
** This command does NOT remove the files from disk.  It just marks the
** files as no longer being part of the project.  In other words, future
** changes to the named files will not be versioned.
**
** SUMMARY: fossil rm FILE1 ?FILE2 ...?
**      or: fossil delete FILE1 ?FILE2 ...?
*/
void delete_cmd(void){
  int i;
  int vid;
  Stmt loop;

  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  if( vid==0 ){
    fossil_panic("no checkout to remove from");
  }
  db_begin_transaction();
  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
  for(i=2; i<g.argc; i++){
    Blob treeName;
    char *zTreeName;



    file_tree_name(g.argv[i], &treeName, 1);
    zTreeName = blob_str(&treeName);
    db_multi_exec(
       "INSERT OR IGNORE INTO sfile"
       " SELECT pathname FROM vfile"

       "  WHERE (pathname=%Q"
       "     OR (pathname>'%q/' AND pathname<'%q0'))"
       "    AND NOT deleted",
       zTreeName, zTreeName, zTreeName

    );
    blob_reset(&treeName);
  }
  
  db_prepare(&loop, "SELECT x FROM sfile");
  while( db_step(&loop)==SQLITE_ROW ){
    printf("DELETED %s\n", db_column_text(&loop, 0));
  }
  db_finalize(&loop);
  db_multi_exec(
    "UPDATE vfile SET deleted=1 WHERE pathname IN sfile;"
    "DELETE FROM vfile WHERE rid=0 AND deleted;"
  );
  db_end_transaction(0);
}

/*
** COMMAND: addremove
**
** Usage: %fossil addremove ?--dotfiles? ?--ignore GLOBPATTERN? ?--test?
**
** Do all necessary "add" and "rm" commands to synchronize the repository
** with the content of the working checkout:
**
**  *  All files in the checkout but not in the repository (that is,
**     all files displayed using the "extra" command) are added as
**     if by the "add" command.
**
**  *  All files in the repository but missing from the checkout (that is,
**     all files that show as MISSING with the "status" command) are
**     removed as if by the "rm" command.
**
** The command does not "commit".  You must run the "commit" separately
** as a separate step.
**
** Files and directories whose names begin with "." are ignored unless
** the --dotfiles option is used.
**
** The --ignore option overrides the "ignore-glob" setting.  See
** documentation on the "settings" command for further information.
**
** The --test option shows what would happen without actually doing anything.
**
** This command can be used to track third party software.
**
**
** SUMMARY: fossil addremove
** Options: ?--dotfiles? ?--ignore GLOBPATTERN? ?--test?
*/
void import_cmd(void){
  Blob path;
  const char *zIgnoreFlag = find_option("ignore",0,1);
  int allFlag = find_option("dotfiles",0,0)!=0;
  int isTest = find_option("test",0,0)!=0;
  int n;
  Stmt q;
  int vid;
  int nAdd = 0;
  int nDelete = 0;
  Glob *pIgnore;

  db_must_be_within_tree();
  if( zIgnoreFlag==0 ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }
  vid = db_lget_int("checkout",0);
  if( vid==0 ){
    fossil_panic("no checkout to add to");
  }
  db_begin_transaction();

  /* step 1:  
  ** Populate the temp table "sfile" with the names of all unmanged
  ** files currently in the check-out, except for files that match the
  ** --ignore or ignore-glob patterns and dot-files.  Then add all of
  ** the files in the sfile temp table to the set of managed files.
  */
  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
  n = strlen(g.zLocalRoot);
  blob_init(&path, g.zLocalRoot, n-1);
  /* now we read the complete file structure into a temp table */
  pIgnore = glob_create(zIgnoreFlag);
  vfile_scan(&path, blob_size(&path), allFlag, pIgnore);
  glob_free(pIgnore);
  nAdd = add_files_in_sfile(vid);

  /* step 2: search for missing files */
  db_prepare(&q,
      "SELECT pathname, %Q || pathname, deleted FROM vfile"
      " WHERE NOT deleted"
      " ORDER BY 1",
      g.zLocalRoot
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char * zFile;
    const char * zPath;

    zFile = db_column_text(&q, 0);
    zPath = db_column_text(&q, 1);
    if( !file_isfile(zPath) ){
      if( !isTest ){
        db_multi_exec("UPDATE vfile SET deleted=1 WHERE pathname=%Q", zFile);
      }
      printf("DELETED  %s\n", zFile);
      nDelete++;
    }

  }

  db_finalize(&q);
  /* show cmmand summary */
  printf("added %d files, deleted %d files\n", nAdd, nDelete);


  db_end_transaction(isTest);
}


/*
** Rename a single file.
**
** The original name of the file is zOrig.  The new filename is zNew.
*/
static void mv_one_file(int vid, const char *zOrig, const char *zNew){
................................................................................
/*
** COMMAND: mv
** COMMAND: rename
**
** Usage: %fossil mv|rename OLDNAME NEWNAME
**    or: %fossil mv|rename OLDNAME... DIR
**
** Move or rename one or more files or directories within the repository tree.
** You can either rename a file or directory or move it to another subdirectory.
**
** This command does NOT rename or move the files on disk.  This command merely
** records the fact that filenames have changed so that appropriate notations
** can be made at the next commit/checkin.
**
**
** SUMMARY: fossil mv|rename OLDNAME NEWNAME
**      or: fossil mv|rename OLDNAME... DIR
*/
void mv_cmd(void){
  int i;
  int vid;
  char *zDest;
  Blob dest;
  Stmt q;
................................................................................
      int nOrig;
      file_tree_name(g.argv[i], &orig, 1);
      zOrig = blob_str(&orig);
      nOrig = blob_size(&orig);
      db_prepare(&q,
         "SELECT pathname FROM vfile"
         " WHERE vid=%d"
         "   AND (pathname='%q' OR (pathname>'%q/' AND pathname<'%q0'))"
         " ORDER BY 1",
         vid, zOrig, zOrig, zOrig
      );
      while( db_step(&q)==SQLITE_ROW ){
        const char *zPath = db_column_text(&q, 0);
        int nPath = db_column_bytes(&q, 0);
        const char *zTail;
        if( nPath==nOrig ){
          zTail = file_tail(zPath);

  int n;
  Stmt q;
  const char *zCmd;
  char *zSyscmd;
  char *zFossil;
  char *zQFilename;
  int nMissing;


  
  if( g.argc<3 ){
    usage("list|ls|pull|push|rebuild|sync");
  }
  n = strlen(g.argv[2]);
  db_open_config(1);
  zCmd = g.argv[2];
................................................................................
    zCmd = "push -autourl -R";
  }else if( strncmp(zCmd, "pull", n)==0 ){
    zCmd = "pull -autourl -R";
  }else if( strncmp(zCmd, "rebuild", n)==0 ){
    zCmd = "rebuild";
  }else if( strncmp(zCmd, "sync", n)==0 ){
    zCmd = "sync -autourl -R";


  }else if( strncmp(zCmd, "ignore", n)==0 ){
    int j;
    db_begin_transaction();
    for(j=3; j<g.argc; j++){
      db_multi_exec("DELETE FROM global_config WHERE name GLOB 'repo:%q'",
         g.argv[j]);
    }
    db_end_transaction(0);
    return;
  }else{
    fossil_fatal("\"all\" subcommand should be one of: "
                 "ignore list ls push pull rebuild sync");
  }
  zFossil = quoteFilename(g.argv[0]);
  nMissing = 0;
  db_prepare(&q,
     "SELECT DISTINCT substr(name, 6) COLLATE nocase"
     "  FROM global_config"
     " WHERE substr(name, 1, 5)=='repo:' ORDER BY 1"
  );
  while( db_step(&q)==SQLITE_ROW ){
................................................................................
      printf("%s\n", zFilename);
      continue;
    }
    zQFilename = quoteFilename(zFilename);
    zSyscmd = mprintf("%s %s %s", zFossil, zCmd, zQFilename);
    printf("%s\n", zSyscmd);
    fflush(stdout);
    fossil_system(zSyscmd);
    free(zSyscmd);
    free(zQFilename);




  }
  
  /* If any repositories whose names appear in the ~/.fossil file could not
  ** be found, remove those names from the ~/.fossil file.
  */
  if( nMissing ){
    db_begin_transaction();

  int n;
  Stmt q;
  const char *zCmd;
  char *zSyscmd;
  char *zFossil;
  char *zQFilename;
  int nMissing;
  int stopOnError = find_option("dontstop",0,0)==0;
  int rc;
  
  if( g.argc<3 ){
    usage("list|ls|pull|push|rebuild|sync");
  }
  n = strlen(g.argv[2]);
  db_open_config(1);
  zCmd = g.argv[2];
................................................................................
    zCmd = "push -autourl -R";
  }else if( strncmp(zCmd, "pull", n)==0 ){
    zCmd = "pull -autourl -R";
  }else if( strncmp(zCmd, "rebuild", n)==0 ){
    zCmd = "rebuild";
  }else if( strncmp(zCmd, "sync", n)==0 ){
    zCmd = "sync -autourl -R";
  }else if( strncmp(zCmd, "test-integrity", n)==0 ){
    zCmd = "test-integrity";
  }else if( strncmp(zCmd, "ignore", n)==0 ){
    int j;
    db_begin_transaction();
    for(j=3; j<g.argc; j++){
      db_multi_exec("DELETE FROM global_config WHERE name GLOB 'repo:%q'",
         g.argv[j]);
    }
    db_end_transaction(0);
    return;
  }else{
    fossil_fatal("\"all\" subcommand should be one of: "
                 "ignore list ls push pull rebuild sync");
  }
  zFossil = quoteFilename(fossil_nameofexe());
  nMissing = 0;
  db_prepare(&q,
     "SELECT DISTINCT substr(name, 6) COLLATE nocase"
     "  FROM global_config"
     " WHERE substr(name, 1, 5)=='repo:' ORDER BY 1"
  );
  while( db_step(&q)==SQLITE_ROW ){
................................................................................
      printf("%s\n", zFilename);
      continue;
    }
    zQFilename = quoteFilename(zFilename);
    zSyscmd = mprintf("%s %s %s", zFossil, zCmd, zQFilename);
    printf("%s\n", zSyscmd);
    fflush(stdout);
    rc = fossil_system(zSyscmd);
    free(zSyscmd);
    free(zQFilename);
    if( stopOnError && rc ){
      nMissing = 0;
      break;
    }
  }
  
  /* If any repositories whose names appear in the ~/.fossil file could not
  ** be found, remove those names from the ~/.fossil file.
  */
  if( nMissing ){
    db_begin_transaction();

    style_header("Missing");
    @ Attachment has been deleted
    style_footer();
    return;
  }
  g.okRead = 1;
  cgi_replace_parameter("name",zUUID);
  if( strcmp(g.zPath,"attachview")==0 ){
    artifact_page();
  }else{
    cgi_replace_parameter("m", mimetype_from_name(zFile));
    rawartifact_page();
  }
}

................................................................................
    const char *zComment;
    char *zDate;
    int rid;
    int i, n;

    db_begin_transaction();
    blob_init(&content, aContent, szContent);
    rid = content_put(&content, 0, 0);
    zUUID = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
    blob_zero(&manifest);
    for(i=n=0; zName[i]; i++){
      if( zName[i]=='/' || zName[i]=='\\' ) n = i;
    }
    zName += n;
    if( zName[0]==0 ) zName = "unknown";
................................................................................
    zComment = PD("comment", "");
    while( fossil_isspace(zComment[0]) ) zComment++;
    n = strlen(zComment);
    while( n>0 && fossil_isspace(zComment[n-1]) ){ n--; }
    if( n>0 ){
      blob_appendf(&manifest, "C %F\n", zComment);
    }
    zDate = db_text(0, "SELECT datetime('now')");
    zDate[10] = 'T';
    blob_appendf(&manifest, "D %s\n", zDate);
    blob_appendf(&manifest, "U %F\n", g.zLogin ? g.zLogin : "nobody");
    md5sum_blob(&manifest, &cksum);
    blob_appendf(&manifest, "Z %b\n", &cksum);
    rid = content_put(&manifest, 0, 0);
    manifest_crosslink(rid, &manifest);

    db_end_transaction(0);
    cgi_redirect(zFrom);
  }
  style_header("Add Attachment");
  @ <h2>Add Attachment To %s(zTargetType)</h2>
  @ <form action="%s(g.zBaseURL)/attachadd" method="post"
  @  enctype="multipart/form-data"><div>
  @ File to Attach:
  @ <input type="file" name="f" size="60" /><br />
  @ Description:<br />
  @ <textarea name="comment" cols="80" rows="5" wrap="virtual"></textarea><br />
  if( zTkt ){
    @ <input type="hidden" name="tkt" value="%h(zTkt)" />
................................................................................
    blob_zero(&manifest);
    for(i=n=0; zFile[i]; i++){
      if( zFile[i]=='/' || zFile[i]=='\\' ) n = i;
    }
    zFile += n;
    if( zFile[0]==0 ) zFile = "unknown";
    blob_appendf(&manifest, "A %F %F\n", zFile, zTarget);
    zDate = db_text(0, "SELECT datetime('now')");
    zDate[10] = 'T';
    blob_appendf(&manifest, "D %s\n", zDate);
    blob_appendf(&manifest, "U %F\n", g.zLogin ? g.zLogin : "nobody");
    md5sum_blob(&manifest, &cksum);
    blob_appendf(&manifest, "Z %b\n", &cksum);
    rid = content_put(&manifest, 0, 0);
    manifest_crosslink(rid, &manifest);
    db_end_transaction(0);
    cgi_redirect(zFrom);
  }    
  style_header("Delete Attachment");
  @ <form action="%s(g.zBaseURL)/attachdelete" method="post"><div>
  @ <p>Confirm that you want to delete the attachment named
  @ "%h(zFile)" on %s(zTkt?"ticket":"wiki page") %h(zTarget):<br /></p>
  if( zTkt ){
    @ <input type="hidden" name="tkt" value="%h(zTkt)" />
  }else{
    @ <input type="hidden" name="page" value="%h(zPage)" />
  }

    style_header("Missing");
    @ Attachment has been deleted
    style_footer();
    return;
  }
  g.okRead = 1;
  cgi_replace_parameter("name",zUUID);
  if( fossil_strcmp(g.zPath,"attachview")==0 ){
    artifact_page();
  }else{
    cgi_replace_parameter("m", mimetype_from_name(zFile));
    rawartifact_page();
  }
}

................................................................................
    const char *zComment;
    char *zDate;
    int rid;
    int i, n;

    db_begin_transaction();
    blob_init(&content, aContent, szContent);
    rid = content_put(&content);
    zUUID = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
    blob_zero(&manifest);
    for(i=n=0; zName[i]; i++){
      if( zName[i]=='/' || zName[i]=='\\' ) n = i;
    }
    zName += n;
    if( zName[0]==0 ) zName = "unknown";
................................................................................
    zComment = PD("comment", "");
    while( fossil_isspace(zComment[0]) ) zComment++;
    n = strlen(zComment);
    while( n>0 && fossil_isspace(zComment[n-1]) ){ n--; }
    if( n>0 ){
      blob_appendf(&manifest, "C %F\n", zComment);
    }
    zDate = date_in_standard_format("now");

    blob_appendf(&manifest, "D %s\n", zDate);
    blob_appendf(&manifest, "U %F\n", g.zLogin ? g.zLogin : "nobody");
    md5sum_blob(&manifest, &cksum);
    blob_appendf(&manifest, "Z %b\n", &cksum);
    rid = content_put(&manifest);
    manifest_crosslink(rid, &manifest);
    assert( blob_is_reset(&manifest) );
    db_end_transaction(0);
    cgi_redirect(zFrom);
  }
  style_header("Add Attachment");
  @ <h2>Add Attachment To %s(zTargetType)</h2>
  @ <form action="%s(g.zTop)/attachadd" method="post"
  @  enctype="multipart/form-data"><div>
  @ File to Attach:
  @ <input type="file" name="f" size="60" /><br />
  @ Description:<br />
  @ <textarea name="comment" cols="80" rows="5" wrap="virtual"></textarea><br />
  if( zTkt ){
    @ <input type="hidden" name="tkt" value="%h(zTkt)" />
................................................................................
    blob_zero(&manifest);
    for(i=n=0; zFile[i]; i++){
      if( zFile[i]=='/' || zFile[i]=='\\' ) n = i;
    }
    zFile += n;
    if( zFile[0]==0 ) zFile = "unknown";
    blob_appendf(&manifest, "A %F %F\n", zFile, zTarget);
    zDate = date_in_standard_format("now");

    blob_appendf(&manifest, "D %s\n", zDate);
    blob_appendf(&manifest, "U %F\n", g.zLogin ? g.zLogin : "nobody");
    md5sum_blob(&manifest, &cksum);
    blob_appendf(&manifest, "Z %b\n", &cksum);
    rid = content_put(&manifest);
    manifest_crosslink(rid, &manifest);
    db_end_transaction(0);
    cgi_redirect(zFrom);
  }    
  style_header("Delete Attachment");
  @ <form action="%s(g.zTop)/attachdelete" method="post"><div>
  @ <p>Confirm that you want to delete the attachment named
  @ "%h(zFile)" on %s(zTkt?"ticket":"wiki page") %h(zTarget):<br /></p>
  if( zTkt ){
    @ <input type="hidden" name="tkt" value="%h(zTkt)" />
  }else{
    @ <input type="hidden" name="page" value="%h(zPage)" />
  }

/*
** Copyright (c) 2010 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**
*******************************************************************************
**
** This file contains code used to implement the "bisect" command.
**
** This file also contains logic used to compute the closure of filename
** changes that have occurred across multiple check-ins.
*/
#include "config.h"
#include "bisect.h"
#include <assert.h>

/*
** Local variables for this module
*/
static struct {
  int bad;                /* The bad version */
  int good;               /* The good version */
} bisect;

/*
** Find the shortest path between bad and good.
*/
void bisect_path(void){
  PathNode *p;
  bisect.bad = db_lget_int("bisect-bad", 0);
  if( bisect.bad==0 ){
    fossil_fatal("no \"bad\" version has been identified");
  }
  bisect.good = db_lget_int("bisect-good", 0);
  if( bisect.good==0 ){
    fossil_fatal("no \"good\" version has been identified");
  }
  p = path_shortest(bisect.good, bisect.bad, bisect_option("direct-only"));
  if( p==0 ){
    char *zBad = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", bisect.bad);
    char *zGood = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", bisect.good);
    fossil_fatal("no path from good ([%S]) to bad ([%S]) or back",
                 zGood, zBad);
  }
}

/*
** The set of all bisect options.
*/
static const struct {
  const char *zName;
  const char *zDefault;
  const char *zDesc;
} aBisectOption[] = {
  { "auto-next",    "on",    "Automatically run \"bisect next\" after each "
                             "\"bisect good\" or \"bisect bad\"" },
  { "direct-only",  "on",    "Follow only primary parent-child links, not "
                             "merges\n" },
};

/*
** Return the value of a boolean bisect option.
*/
int bisect_option(const char *zName){
  unsigned int i;
  int r = -1;
  for(i=0; i<sizeof(aBisectOption)/sizeof(aBisectOption[0]); i++){
    if( strcmp(zName, aBisectOption[i].zName)==0 ){
      char *zLabel = mprintf("bisect-%s", zName);
      char *z = db_lget(zLabel, (char*)aBisectOption[i].zDefault);
      if( is_truth(z) ) r = 1;
      if( is_false(z) ) r = 0;
      if( r<0 ) r = is_truth(aBisectOption[i].zDefault);
      free(zLabel);
      break;
    }
  }
  assert( r>=0 );
  return r;
}

/*
** COMMAND: bisect
**
** Usage: %fossil bisect SUBCOMMAND ...
**
** Run various subcommands useful for searching for bugs.
**
**   fossil bisect bad ?VERSION?
**
**     Identify version VERSION as non-working.  If VERSION is omitted,
**     the current checkout is marked as non-working.
**
**   fossil bisect good ?VERSION?
**
**     Identify version VERSION as working.  If VERSION is omitted,
**     the current checkout is marked as working.
**
**   fossil bisect next
**
**     Update to the next version that is halfway between the working and
**     non-working versions.
**
**   fossil bisect options ?NAME? ?VALUE?
**
**     List all bisect options, or the value of a single option, or set the
**     value of a bisect option.
**
**   fossil bisect reset
**
**     Reinitialize a bisect session.  This cancels prior bisect history
**     and allows a bisect session to start over from the beginning.
**
**   fossil bisect vlist
**
**     List the versions in between "bad" and "good".
*/
void bisect_cmd(void){
  int n;
  const char *zCmd;
  db_must_be_within_tree();
  if( g.argc<3 ){
    usage("bisect SUBCOMMAND ARGS...");
  }
  zCmd = g.argv[2];
  n = strlen(zCmd);
  if( n==0 ) zCmd = "-";
  if( memcmp(zCmd, "bad", n)==0 ){
    int ridBad;
    if( g.argc==3 ){
      ridBad = db_lget_int("checkout",0);
    }else{
      ridBad = name_to_rid(g.argv[3]);
    }
    db_lset_int("bisect-bad", ridBad);
    if( ridBad>0
     && bisect_option("auto-next")
     && db_lget_int("bisect-good",0)>0
    ){
      zCmd = "next";
      n = 4;
    }else{
      return;
    }
  }else if( memcmp(zCmd, "good", n)==0 ){
    int ridGood;
    if( g.argc==3 ){
      ridGood = db_lget_int("checkout",0);
    }else{
      ridGood = name_to_rid(g.argv[3]);
    }
    db_lset_int("bisect-good", ridGood);
    if( ridGood>0
     && bisect_option("auto-next")
     && db_lget_int("bisect-bad",0)>0
    ){
      zCmd = "next";
      n = 4;
    }else{
      return;
    }
  }
  if( memcmp(zCmd, "next", n)==0 ){
    PathNode *pMid;
    bisect_path();
    pMid = path_midpoint();
    if( pMid==0 ){
      fossil_fatal("bisect is done - there are no more intermediate versions");
    }
    g.argv[1] = "update";
    g.argv[2] = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", pMid->rid);
    g.argc = 3;
    g.fNoSync = 1;
    update_cmd();
  }else if( memcmp(zCmd, "options", n)==0 ){
    if( g.argc==3 ){
      unsigned int i;
      for(i=0; i<sizeof(aBisectOption)/sizeof(aBisectOption[0]); i++){
        char *z = mprintf("bisect-%s", aBisectOption[i].zName);
        printf("  %-15s  %-6s  ", aBisectOption[i].zName,
               db_lget(z, (char*)aBisectOption[i].zDefault));
        fossil_free(z);
        comment_print(aBisectOption[i].zDesc, 27, 79);
      }
    }else if( g.argc==4 || g.argc==5 ){
      unsigned int i;
      n = strlen(g.argv[3]);
      for(i=0; i<sizeof(aBisectOption)/sizeof(aBisectOption[0]); i++){
        if( memcmp(g.argv[3], aBisectOption[i].zName, n)==0 ){
          char *z = mprintf("bisect-%s", aBisectOption[i].zName);
          if( g.argc==5 ){
            db_lset(z, g.argv[4]);
          }
          printf("%s\n", db_lget(z, (char*)aBisectOption[i].zDefault));
          fossil_free(z);
          break;
        }
      }
      if( i>=sizeof(aBisectOption)/sizeof(aBisectOption[0]) ){
        fossil_fatal("no such bisect option: %s", g.argv[3]);
      }
    }else{
      usage("bisect option ?NAME? ?VALUE?");
    }
  }else if( memcmp(zCmd, "reset", n)==0 ){
    db_multi_exec(
      "DELETE FROM vvar WHERE name IN ('bisect-good', 'bisect-bad');"
    );
  }else if( memcmp(zCmd, "vlist", n)==0 ){
    PathNode *p;
    int vid = db_lget_int("checkout", 0);
    int n;
    Stmt s;
    int nStep;
    bisect_path();
    db_prepare(&s, "SELECT substr(blob.uuid,1,20) || ' ' || "
                   "       datetime(event.mtime) FROM blob, event"
                   " WHERE blob.rid=:rid AND event.objid=:rid"
                   "   AND event.type='ci'");
    nStep = path_length();
    for(p=path_last(), n=0; p; p=p->pFrom, n++){
      const char *z;
      db_bind_int(&s, ":rid", p->rid);
      if( db_step(&s)==SQLITE_ROW ){
        z = db_column_text(&s, 0);
        printf("%s", z);
        if( p->rid==bisect.good ) printf(" GOOD");
        if( p->rid==bisect.bad ) printf(" BAD");
        if( p->rid==vid ) printf(" CURRENT");
        if( nStep>1 && n==nStep/2 ) printf(" NEXT");
        printf("\n");
      }
      db_reset(&s);
    }
    db_finalize(&s);
  }else{
    usage("bad|good|next|reset|vlist ...");
  }
}

** Make sure a blob is initialized
*/
#define blob_is_init(x) \
  assert((x)->xRealloc==blobReallocMalloc || (x)->xRealloc==blobReallocStatic)

/*
** Make sure a blob does not contain malloced memory.




*/
#if 0  /* Enable for debugging only */
#define blob_is_reset(x) \
  assert((x)->xRealloc!=blobReallocMalloc || (x)->nAlloc==0)
#else
#define blob_is_reset(x)
#endif



/*
** We find that the built-in isspace() function does not work for
** some international character sets.  So here is a substitute.
*/
int fossil_isspace(char c){
  return c==' ' || (c<='\r' && c>='\t');
................................................................................
** Reset a blob to be an empty container.
*/
void blob_reset(Blob *pBlob){
  blob_is_init(pBlob);
  pBlob->xRealloc(pBlob, 0);
}














/*
** Initialize a blob to a string or byte-array constant of a specified length.
** Any prior data in the blob is discarded.
*/
void blob_init(Blob *pBlob, const char *zData, int size){
  blob_is_reset(pBlob);
  if( zData==0 ){
    *pBlob = empty_blob;
  }else{
    if( size<=0 ) size = strlen(zData);
    pBlob->nUsed = pBlob->nAlloc = size;
    pBlob->aData = (char*)zData;
    pBlob->iCursor = 0;
................................................................................
}

/*
** Initialize a blob to an empty string.
*/
void blob_zero(Blob *pBlob){
  static const char zEmpty[] = "";
  blob_is_reset(pBlob);
  pBlob->nUsed = 0;
  pBlob->nAlloc = 1;
  pBlob->aData = (char*)zEmpty;
  pBlob->iCursor = 0;
  pBlob->xRealloc = blobReallocStatic;
}

................................................................................
  blob_is_init(p);
  if( p->nUsed==0 ) return "";
  p->aData[p->nUsed] = 0;
  return p->aData;
}

/*
** Compare two blobs.

*/
int blob_compare(Blob *pA, Blob *pB){
  int szA, szB, sz, rc;
  blob_is_init(pA);
  blob_is_init(pB);
  szA = blob_size(pA);
  szB = blob_size(pB);
................................................................................
** Extract N bytes from blob pFrom and use it to initialize blob pTo.
** Return the actual number of bytes extracted.
**
** After this call completes, pTo will be an ephemeral blob.
*/
int blob_extract(Blob *pFrom, int N, Blob *pTo){
  blob_is_init(pFrom);
  blob_is_reset(pTo);
  if( pFrom->iCursor + N > pFrom->nUsed ){
    N = pFrom->nUsed - pFrom->iCursor;
    if( N<=0 ){
      blob_zero(pTo);
      return 0;
    }
  }
................................................................................
int blob_token(Blob *pFrom, Blob *pTo){
  char *aData = pFrom->aData;
  int n = pFrom->nUsed;
  int i = pFrom->iCursor;
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  while( i<n && !fossil_isspace(aData[i]) ){ i++; }






































  blob_extract(pFrom, i-pFrom->iCursor, pTo);
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  return pTo->nUsed;
}

/*
................................................................................
    char *zName, zBuf[1000];

    nName = strlen(zFilename);
    if( nName>=sizeof(zBuf) ){
      zName = mprintf("%s", zFilename);
    }else{
      zName = zBuf;
      strcpy(zName, zFilename);
    }
    nName = file_simplify_name(zName, nName);
    for(i=1; i<nName; i++){
      if( zName[i]=='/' ){
        zName[i] = 0;
#if defined(_WIN32)
        /*
................................................................................
  outBuf[1] = nIn>>16 & 0xff;
  outBuf[2] = nIn>>8 & 0xff;
  outBuf[3] = nIn & 0xff;
  nOut2 = (long int)nOut;
  compress(&outBuf[4], &nOut2,
           (unsigned char*)blob_buffer(pIn), blob_size(pIn));
  if( pOut==pIn ) blob_reset(pOut);
  blob_is_reset(pOut);
  *pOut = temp;
  blob_resize(pOut, nOut2+4);
}

/*
** COMMAND: test-compress
*/
................................................................................
  stream.next_in = (unsigned char*)blob_buffer(pIn2);
  deflate(&stream, 0);
  deflate(&stream, Z_FINISH);
  blob_resize(&temp, stream.total_out + 4);
  deflateEnd(&stream);
  if( pOut==pIn1 ) blob_reset(pOut);
  if( pOut==pIn2 ) blob_reset(pOut);
  blob_is_reset(pOut);
  *pOut = temp;
}

/*
** COMMAND: test-compress-2
*/
void compress2_cmd(void){
................................................................................
  }
  inBuf = (unsigned char*)blob_buffer(pIn);
  nOut = (inBuf[0]<<24) + (inBuf[1]<<16) + (inBuf[2]<<8) + inBuf[3];
  blob_zero(&temp);
  blob_resize(&temp, nOut+1);
  nOut2 = (long int)nOut;
  rc = uncompress((unsigned char*)blob_buffer(&temp), &nOut2, 
                  &inBuf[4], blob_size(pIn));
  if( rc!=Z_OK ){
    blob_reset(&temp);
    return 1;
  }
  blob_resize(&temp, nOut2);
  if( pOut==pIn ) blob_reset(pOut);
  blob_is_reset(pOut);
  *pOut = temp;
  return 0;
}

/*
** COMMAND: test-uncompress
*/

** Make sure a blob is initialized
*/
#define blob_is_init(x) \
  assert((x)->xRealloc==blobReallocMalloc || (x)->xRealloc==blobReallocStatic)

/*
** Make sure a blob does not contain malloced memory.
**
** This might fail if we are unlucky and x is uninitialized.  For that
** reason it should only be used locally for debugging.  Leave it turned
** off for production.
*/
#if 0  /* Enable for debugging only */
#define assert_blob_is_reset(x) assert(blob_is_reset(x))

#else
#define assert_blob_is_reset(x)
#endif



/*
** We find that the built-in isspace() function does not work for
** some international character sets.  So here is a substitute.
*/
int fossil_isspace(char c){
  return c==' ' || (c<='\r' && c>='\t');
................................................................................
** Reset a blob to be an empty container.
*/
void blob_reset(Blob *pBlob){
  blob_is_init(pBlob);
  pBlob->xRealloc(pBlob, 0);
}


/*
** Return true if the blob has been zeroed - in other words if it contains
** no malloced memory.  This only works reliably if the blob has been
** initialized - it can return a false negative on an uninitialized blob.
*/
int blob_is_reset(Blob *pBlob){
  if( pBlob==0 ) return 1;
  if( pBlob->nUsed ) return 0;
  if( pBlob->xRealloc==blobReallocMalloc && pBlob->nAlloc ) return 0;
  return 1;
}

/*
** Initialize a blob to a string or byte-array constant of a specified length.
** Any prior data in the blob is discarded.
*/
void blob_init(Blob *pBlob, const char *zData, int size){
  assert_blob_is_reset(pBlob);
  if( zData==0 ){
    *pBlob = empty_blob;
  }else{
    if( size<=0 ) size = strlen(zData);
    pBlob->nUsed = pBlob->nAlloc = size;
    pBlob->aData = (char*)zData;
    pBlob->iCursor = 0;
................................................................................
}

/*
** Initialize a blob to an empty string.
*/
void blob_zero(Blob *pBlob){
  static const char zEmpty[] = "";
  assert_blob_is_reset(pBlob);
  pBlob->nUsed = 0;
  pBlob->nAlloc = 1;
  pBlob->aData = (char*)zEmpty;
  pBlob->iCursor = 0;
  pBlob->xRealloc = blobReallocStatic;
}

................................................................................
  blob_is_init(p);
  if( p->nUsed==0 ) return "";
  p->aData[p->nUsed] = 0;
  return p->aData;
}

/*
** Compare two blobs.  Return negative, zero, or positive if the first
** blob is less then, equal to, or greater than the second.
*/
int blob_compare(Blob *pA, Blob *pB){
  int szA, szB, sz, rc;
  blob_is_init(pA);
  blob_is_init(pB);
  szA = blob_size(pA);
  szB = blob_size(pB);
................................................................................
** Extract N bytes from blob pFrom and use it to initialize blob pTo.
** Return the actual number of bytes extracted.
**
** After this call completes, pTo will be an ephemeral blob.
*/
int blob_extract(Blob *pFrom, int N, Blob *pTo){
  blob_is_init(pFrom);
  assert_blob_is_reset(pTo);
  if( pFrom->iCursor + N > pFrom->nUsed ){
    N = pFrom->nUsed - pFrom->iCursor;
    if( N<=0 ){
      blob_zero(pTo);
      return 0;
    }
  }
................................................................................
int blob_token(Blob *pFrom, Blob *pTo){
  char *aData = pFrom->aData;
  int n = pFrom->nUsed;
  int i = pFrom->iCursor;
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  while( i<n && !fossil_isspace(aData[i]) ){ i++; }
  blob_extract(pFrom, i-pFrom->iCursor, pTo);
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  return pTo->nUsed;
}

/*
** Extract a single SQL token from pFrom and use it to initialize pTo.
** Return the number of bytes in the token.  If no token is found,
** return 0.
**
** An SQL token consists of one or more non-space characters.  If the
** first character is ' then the token is terminated by a matching '
** (ignoring double '') or by the end of the string
**
** The cursor of pFrom is left pointing at the first character past
** the end of the token.
**
** pTo will be an ephermeral blob.  If pFrom changes, it might alter
** pTo as well.
*/
int blob_sqltoken(Blob *pFrom, Blob *pTo){
  char *aData = pFrom->aData;
  int n = pFrom->nUsed;
  int i = pFrom->iCursor;
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  if( aData[i]=='\'' ){
    i++;
    while( i<n ){
      if( aData[i]=='\'' ){
        if( aData[++i]!='\'' ) break;
      }
      i++;
    }
  }else{
    while( i<n && !fossil_isspace(aData[i]) ){ i++; }
  }
  blob_extract(pFrom, i-pFrom->iCursor, pTo);
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  return pTo->nUsed;
}

/*
................................................................................
    char *zName, zBuf[1000];

    nName = strlen(zFilename);
    if( nName>=sizeof(zBuf) ){
      zName = mprintf("%s", zFilename);
    }else{
      zName = zBuf;
      memcpy(zName, zFilename, nName+1);
    }
    nName = file_simplify_name(zName, nName);
    for(i=1; i<nName; i++){
      if( zName[i]=='/' ){
        zName[i] = 0;
#if defined(_WIN32)
        /*
................................................................................
  outBuf[1] = nIn>>16 & 0xff;
  outBuf[2] = nIn>>8 & 0xff;
  outBuf[3] = nIn & 0xff;
  nOut2 = (long int)nOut;
  compress(&outBuf[4], &nOut2,
           (unsigned char*)blob_buffer(pIn), blob_size(pIn));
  if( pOut==pIn ) blob_reset(pOut);
  assert_blob_is_reset(pOut);
  *pOut = temp;
  blob_resize(pOut, nOut2+4);
}

/*
** COMMAND: test-compress
*/
................................................................................
  stream.next_in = (unsigned char*)blob_buffer(pIn2);
  deflate(&stream, 0);
  deflate(&stream, Z_FINISH);
  blob_resize(&temp, stream.total_out + 4);
  deflateEnd(&stream);
  if( pOut==pIn1 ) blob_reset(pOut);
  if( pOut==pIn2 ) blob_reset(pOut);
  assert_blob_is_reset(pOut);
  *pOut = temp;
}

/*
** COMMAND: test-compress-2
*/
void compress2_cmd(void){
................................................................................
  }
  inBuf = (unsigned char*)blob_buffer(pIn);
  nOut = (inBuf[0]<<24) + (inBuf[1]<<16) + (inBuf[2]<<8) + inBuf[3];
  blob_zero(&temp);
  blob_resize(&temp, nOut+1);
  nOut2 = (long int)nOut;
  rc = uncompress((unsigned char*)blob_buffer(&temp), &nOut2, 
                  &inBuf[4], nIn - 4);
  if( rc!=Z_OK ){
    blob_reset(&temp);
    return 1;
  }
  blob_resize(&temp, nOut2);
  if( pOut==pIn ) blob_reset(pOut);
  assert_blob_is_reset(pOut);
  *pOut = temp;
  return 0;
}

/*
** COMMAND: test-uncompress
*/

  char *zComment;        /* Check-in comment for the new branch */
  const char *zColor;    /* Color of the new branch */
  Blob branch;           /* manifest for the new branch */
  Manifest *pParent;     /* Parsed parent manifest */
  Blob mcksum;           /* Self-checksum on the manifest */
  const char *zDateOvrd; /* Override date string */
  const char *zUserOvrd; /* Override user name */

 
  noSign = find_option("nosign","",0)!=0;
  zColor = find_option("bgcolor","c",1);

  zDateOvrd = find_option("date-override",0,1);
  zUserOvrd = find_option("user-override",0,1);
  verify_all_options();
  if( g.argc<5 ){
    usage("new BRANCH-NAME CHECK-IN ?-bgcolor COLOR?");
  }
  db_find_and_open_repository(1);  
  noSign = db_get_int("omitsign", 0)|noSign;
  
  /* fossil branch new name */
  zBranch = g.argv[3];
  if( zBranch==0 || zBranch[0]==0 ){
    fossil_panic("branch name cannot be empty");
  }
................................................................................
  blob_zero(&branch);
  if( pParent->zBaseline ){
    blob_appendf(&branch, "B %s\n", pParent->zBaseline);
  }
  zComment = mprintf("Create new branch named \"%h\"", zBranch);
  blob_appendf(&branch, "C %F\n", zComment);
  zDate = date_in_standard_format(zDateOvrd ? zDateOvrd : "now");
  zDate[10] = 'T';
  blob_appendf(&branch, "D %s\n", zDate);

  /* Copy all of the content from the parent into the branch */
  for(i=0; i<pParent->nFile; ++i){
    blob_appendf(&branch, "F %F", pParent->aFile[i].zName);
    if( pParent->aFile[i].zUuid ){
      blob_appendf(&branch, " %s", pParent->aFile[i].zUuid);
................................................................................
        blob_appendf(&branch, " %s", pParent->aFile[i].zPerm);
      }
    }
    blob_append(&branch, "\n", 1);
  }
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rootid);
  blob_appendf(&branch, "P %s\n", zUuid);

  blob_appendf(&branch, "R %s\n", pParent->zRepoCksum);

  manifest_destroy(pParent);

  /* Add the symbolic branch name and the "branch" tag to identify
  ** this as a new branch */


  if( zColor!=0 ){
    blob_appendf(&branch, "T *bgcolor * %F\n", zColor);
  }
  blob_appendf(&branch, "T *branch * %F\n", zBranch);
  blob_appendf(&branch, "T *sym-%F *\n", zBranch);





  /* Cancel all other symbolic tags */
  db_prepare(&q,
      "SELECT tagname FROM tagxref, tag"
      " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
      "   AND tagtype>0 AND tagname GLOB 'sym-*'"
      " ORDER BY tagname",
................................................................................
    prompt_user("unable to sign manifest.  continue (y/N)? ", &ans);
    if( blob_str(&ans)[0]!='y' ){
      db_end_transaction(1);
      fossil_exit(1);
    }
  }

  brid = content_put(&branch, 0, 0);
  if( brid==0 ){
    fossil_panic("trouble committing manifest: %s", g.zErrMsg);
  }
  db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", brid);
  if( manifest_crosslink(brid, &branch)==0 ){
    fossil_panic("unable to install new manifest");
  }

  content_deltify(rootid, brid, 0);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", brid);
  printf("New branch: %s\n", zUuid);
  if( g.argc==3 ){
    printf(
      "\n"
      "Note: the local check-out has not been updated to the new\n"
      "      branch.  To begin working on the new branch, do this:\n"
      "\n"
      "      %s update %s\n",
      g.argv[0], zBranch
    );
  }


  /* Commit */
  db_end_transaction(0);
  
................................................................................
** COMMAND: branch
**
** Usage: %fossil branch SUBCOMMAND ... ?-R|--repository FILE?
**
** Run various subcommands to manage branches of the open repository or
** of the repository identified by the -R or --repository option.
**
**    %fossil branch new BRANCH-NAME BASIS ?-bgcolor COLOR? 
**
**        Create a new branch BRANCH-NAME off of check-in BASIS.
**        You can optionally give the branch a default color.

**
**    %fossil branch list

**
**        List all branches
**
*/
void branch_cmd(void){
  int n;

  db_find_and_open_repository(1);
  if( g.argc<3 ){
    usage("new|list ...");
  }

  n = strlen(g.argv[2]);
  if( n>=2 && strncmp(g.argv[2],"new",n)==0 ){
    branch_new();
  }else if( n>=2 && strncmp(g.argv[2],"list",n)==0 ){

    Stmt q;








    db_prepare(&q,
      "%s"
      "   AND blob.rid IN (SELECT rid FROM tagxref"

      "                     WHERE tagid=%d AND tagtype==2 AND srcid!=0)"


      " ORDER BY event.mtime DESC",
      timeline_query_for_tty(), TAG_BRANCH

    );
    print_timeline(&q, 2000);





    db_finalize(&q);
  }else{
    fossil_panic("branch subcommand should be one of: "
                 "new list");
  }
}

/*
** WEBPAGE: brlist
**
** Show a timeline of all branches
................................................................................
  style_submenu_element("Timeline", "Timeline", "brtimeline");
  if( showClosed ){
    style_submenu_element("Open","Open","brlist");
  }else{
    style_submenu_element("Closed","Closed","brlist?closed");
  }
  login_anonymous_available();
  compute_leaves(0, 1);
  style_sidebox_begin("Nomenclature:", "33%");
  @ <ol>
  @ <li> An <div class="sideboxDescribed"><a href="brlist">
  @ open branch</a></div> is a branch that has one or
  @ more <a href="leaves">open leaves.</a>
  @ The presence of open leaves presumably means
  @ that the branch is still being extended with new check-ins.</li>
................................................................................
  @ closed leaves</a></div>.
  @ Closed branches are fixed and do not change (unless they are first
  @ reopened)</li>
  @ </ol>
  style_sidebox_end();

  cnt = 0;
  if( !showClosed ){
    db_prepare(&q,
      "SELECT DISTINCT value FROM tagxref"
      " WHERE tagid=%d AND value NOT NULL"



      "   AND rid IN leaves"

      " ORDER BY value /*sort*/",
      TAG_BRANCH

    );
  }else{
    db_prepare(&q,
      "SELECT value FROM tagxref"
      " WHERE tagid=%d AND value NOT NULL"
      " EXCEPT "
      "SELECT value FROM tagxref"
      " WHERE tagid=%d AND value NOT NULL"
      "   AND rid IN leaves"

      " ORDER BY value /*sort*/",
      TAG_BRANCH, TAG_BRANCH
    );
  }
  while( db_step(&q)==SQLITE_ROW ){
    const char *zBr = db_column_text(&q, 0);
    if( cnt==0 ){
      if( showClosed ){
        @ <h2>Closed Branches:</h2>
................................................................................
      }else{
        @ <h2>Open Branches:</h2>
      }
      @ <ul>
      cnt++;
    }
    if( g.okHistory ){
      @ <li><a href="%s(g.zBaseURL)/timeline?r=%T(zBr)">%h(zBr)</a></li>
    }else{
      @ <li><b>%h(zBr)</b></li>
    }
  }
  if( cnt ){
    @ </ul>
  }
................................................................................
    "   AND tagxref.tagid=tag.tagid"
    "   AND tagxref.tagtype>0"
    "   AND tag.tagname GLOB 'sym-*'",
    rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTagName = db_column_text(&q, 0);
    @ <a href="%s(g.zBaseURL)/timeline?r=%T(zTagName)">[timeline]</a>
  }
  db_finalize(&q);
}

/*
** WEBPAGE: brtimeline
**
................................................................................
  @ <h2>The initial check-in for each branch:</h2>
  db_prepare(&q,
    "%s AND blob.rid IN (SELECT rid FROM tagxref"
    "                     WHERE tagtype>0 AND tagid=%d AND srcid!=0)"
    " ORDER BY event.mtime DESC",
    timeline_query_for_www(), TAG_BRANCH
  );
  www_print_timeline(&q, 0, brtimeline_extra);
  db_finalize(&q);
  @ <script  type="text/JavaScript">
  @ function xin(id){
  @ }
  @ function xout(id){
  @ }
  @ </script>
  style_footer();
}

  char *zComment;        /* Check-in comment for the new branch */
  const char *zColor;    /* Color of the new branch */
  Blob branch;           /* manifest for the new branch */
  Manifest *pParent;     /* Parsed parent manifest */
  Blob mcksum;           /* Self-checksum on the manifest */
  const char *zDateOvrd; /* Override date string */
  const char *zUserOvrd; /* Override user name */
  int isPrivate = 0;     /* True if the branch should be private */
 
  noSign = find_option("nosign","",0)!=0;
  zColor = find_option("bgcolor","c",1);
  isPrivate = find_option("private",0,0)!=0;
  zDateOvrd = find_option("date-override",0,1);
  zUserOvrd = find_option("user-override",0,1);
  verify_all_options();
  if( g.argc<5 ){
    usage("new BRANCH-NAME CHECK-IN ?-bgcolor COLOR?");
  }
  db_find_and_open_repository(0, 0);  
  noSign = db_get_int("omitsign", 0)|noSign;
  
  /* fossil branch new name */
  zBranch = g.argv[3];
  if( zBranch==0 || zBranch[0]==0 ){
    fossil_panic("branch name cannot be empty");
  }
................................................................................
  blob_zero(&branch);
  if( pParent->zBaseline ){
    blob_appendf(&branch, "B %s\n", pParent->zBaseline);
  }
  zComment = mprintf("Create new branch named \"%h\"", zBranch);
  blob_appendf(&branch, "C %F\n", zComment);
  zDate = date_in_standard_format(zDateOvrd ? zDateOvrd : "now");

  blob_appendf(&branch, "D %s\n", zDate);

  /* Copy all of the content from the parent into the branch */
  for(i=0; i<pParent->nFile; ++i){
    blob_appendf(&branch, "F %F", pParent->aFile[i].zName);
    if( pParent->aFile[i].zUuid ){
      blob_appendf(&branch, " %s", pParent->aFile[i].zUuid);
................................................................................
        blob_appendf(&branch, " %s", pParent->aFile[i].zPerm);
      }
    }
    blob_append(&branch, "\n", 1);
  }
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rootid);
  blob_appendf(&branch, "P %s\n", zUuid);
  if( pParent->zRepoCksum ){
    blob_appendf(&branch, "R %s\n", pParent->zRepoCksum);
  }
  manifest_destroy(pParent);

  /* Add the symbolic branch name and the "branch" tag to identify
  ** this as a new branch */
  if( content_is_private(rootid) ) isPrivate = 1;
  if( isPrivate && zColor==0 ) zColor = "#fec084";
  if( zColor!=0 ){
    blob_appendf(&branch, "T *bgcolor * %F\n", zColor);
  }
  blob_appendf(&branch, "T *branch * %F\n", zBranch);
  blob_appendf(&branch, "T *sym-%F *\n", zBranch);
  if( isPrivate ){
    blob_appendf(&branch, "T +private *\n");
    noSign = 1;
  }

  /* Cancel all other symbolic tags */
  db_prepare(&q,
      "SELECT tagname FROM tagxref, tag"
      " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
      "   AND tagtype>0 AND tagname GLOB 'sym-*'"
      " ORDER BY tagname",
................................................................................
    prompt_user("unable to sign manifest.  continue (y/N)? ", &ans);
    if( blob_str(&ans)[0]!='y' ){
      db_end_transaction(1);
      fossil_exit(1);
    }
  }

  brid = content_put(&branch);
  if( brid==0 ){
    fossil_panic("trouble committing manifest: %s", g.zErrMsg);
  }
  db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", brid);
  if( manifest_crosslink(brid, &branch)==0 ){
    fossil_panic("unable to install new manifest");
  }
  assert( blob_is_reset(&branch) );
  content_deltify(rootid, brid, 0);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", brid);
  printf("New branch: %s\n", zUuid);
  if( g.argc==3 ){
    printf(
      "\n"
      "Note: the local check-out has not been updated to the new\n"
      "      branch.  To begin working on the new branch, do this:\n"
      "\n"
      "      %s update %s\n",
      fossil_nameofexe(), zBranch
    );
  }


  /* Commit */
  db_end_transaction(0);
  
................................................................................
** COMMAND: branch
**
** Usage: %fossil branch SUBCOMMAND ... ?-R|--repository FILE?
**
** Run various subcommands to manage branches of the open repository or
** of the repository identified by the -R or --repository option.
**
**    %fossil branch new BRANCH-NAME BASIS ?--bgcolor COLOR? ?--private?
**
**        Create a new branch BRANCH-NAME off of check-in BASIS.
**        You can optionally give the branch a default color.  The
**        --private option makes the branch private.
**
**    %fossil branch list
**    %fossil branch ls
**
**        List all branches
**
*/
void branch_cmd(void){
  int n;
  const char *zCmd = "list";
  db_find_and_open_repository(0, 0);
  if( g.argc<2 ){
    usage("new|list|ls ...");
  }
  if( g.argc>=3 ) zCmd = g.argv[2];
  n = strlen(zCmd);
  if( strncmp(zCmd,"new",n)==0 ){
    branch_new();

  }else if( (strncmp(zCmd,"list",n)==0)||(strncmp(zCmd, "ls", n)==0) ){
    Stmt q;
    int vid;
    char *zCurrent = 0;

    if( g.localOpen ){
      vid = db_lget_int("checkout", 0);
      zCurrent = db_text(0, "SELECT value FROM tagxref"
                            " WHERE rid=%d AND tagid=%d", vid, TAG_BRANCH);
    }
    db_prepare(&q,


      "SELECT DISTINCT value FROM tagxref"
      " WHERE tagid=%d AND value NOT NULL"
      "   AND rid IN leaf"
      "   AND NOT %z"
      " ORDER BY value /*sort*/",

      TAG_BRANCH, leaf_is_closed_sql("tagxref.rid")
    );

    while( db_step(&q)==SQLITE_ROW ){
      const char *zBr = db_column_text(&q, 0);
      int isCur = zCurrent!=0 && fossil_strcmp(zCurrent,zBr)==0;
      printf("%s%s\n", (isCur ? "* " : "  "), zBr);
    }
    db_finalize(&q);
  }else{
    fossil_panic("branch subcommand should be one of: "
                 "new list ls");
  }
}

/*
** WEBPAGE: brlist
**
** Show a timeline of all branches
................................................................................
  style_submenu_element("Timeline", "Timeline", "brtimeline");
  if( showClosed ){
    style_submenu_element("Open","Open","brlist");
  }else{
    style_submenu_element("Closed","Closed","brlist?closed");
  }
  login_anonymous_available();

  style_sidebox_begin("Nomenclature:", "33%");
  @ <ol>
  @ <li> An <div class="sideboxDescribed"><a href="brlist">
  @ open branch</a></div> is a branch that has one or
  @ more <a href="leaves">open leaves.</a>
  @ The presence of open leaves presumably means
  @ that the branch is still being extended with new check-ins.</li>
................................................................................
  @ closed leaves</a></div>.
  @ Closed branches are fixed and do not change (unless they are first
  @ reopened)</li>
  @ </ol>
  style_sidebox_end();

  cnt = 0;
  if( showClosed ){
    db_prepare(&q,
      "SELECT value FROM tagxref"
      " WHERE tagid=%d AND value NOT NULL "
      "EXCEPT "
      "SELECT value FROM tagxref"
      " WHERE tagid=%d"
      "   AND rid IN leaf"
      "   AND NOT %z"
      " ORDER BY value /*sort*/",

      TAG_BRANCH, TAG_BRANCH, leaf_is_closed_sql("tagxref.rid")
    );
  }else{
    db_prepare(&q,
      "SELECT DISTINCT value FROM tagxref"
      " WHERE tagid=%d AND value NOT NULL"



      "   AND rid IN leaf"
      "   AND NOT %z"
      " ORDER BY value /*sort*/",
      TAG_BRANCH, leaf_is_closed_sql("tagxref.rid")
    );
  }
  while( db_step(&q)==SQLITE_ROW ){
    const char *zBr = db_column_text(&q, 0);
    if( cnt==0 ){
      if( showClosed ){
        @ <h2>Closed Branches:</h2>
................................................................................
      }else{
        @ <h2>Open Branches:</h2>
      }
      @ <ul>
      cnt++;
    }
    if( g.okHistory ){
      @ <li><a href="%s(g.zTop)/timeline?r=%T(zBr)">%h(zBr)</a></li>
    }else{
      @ <li><b>%h(zBr)</b></li>
    }
  }
  if( cnt ){
    @ </ul>
  }
................................................................................
    "   AND tagxref.tagid=tag.tagid"
    "   AND tagxref.tagtype>0"
    "   AND tag.tagname GLOB 'sym-*'",
    rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTagName = db_column_text(&q, 0);
    @ <a href="%s(g.zTop)/timeline?r=%T(zTagName)">[timeline]</a>
  }
  db_finalize(&q);
}

/*
** WEBPAGE: brtimeline
**
................................................................................
  @ <h2>The initial check-in for each branch:</h2>
  db_prepare(&q,
    "%s AND blob.rid IN (SELECT rid FROM tagxref"
    "                     WHERE tagtype>0 AND tagid=%d AND srcid!=0)"
    " ORDER BY event.mtime DESC",
    timeline_query_for_www(), TAG_BRANCH
  );
  www_print_timeline(&q, 0, 0, 0, brtimeline_extra);
  db_finalize(&q);
  @ <script  type="text/JavaScript">
  @ function xin(id){
  @ }
  @ function xout(id){
  @ }
  @ </script>
  style_footer();
}

  char *zSep = "";

  for(i=0; zPath[i]; i=j){
    for(j=i; zPath[j] && zPath[j]!='/'; j++){}
    if( zPath[j] && g.okHistory ){
      if( zCI ){
        blob_appendf(pOut, "%s<a href=\"%s/dir?ci=%S&amp;name=%#T\">%#h</a>", 
                     zSep, g.zBaseURL, zCI, j, zPath, j-i, &zPath[i]);
      }else{
        blob_appendf(pOut, "%s<a href=\"%s/dir?name=%#T\">%#h</a>", 
                     zSep, g.zBaseURL, j, zPath, j-i, &zPath[i]);
      }
    }else{
      blob_appendf(pOut, "%s%#h", zSep, j-i, &zPath[i]);
    }
    zSep = "/";
    while( zPath[j]=='/' ){ j++; }
  }
................................................................................
**
** Query parameters:
**
**    name=PATH        Directory to display.  Required.
**    ci=LABEL         Show only files in this check-in.  Optional.
*/
void page_dir(void){
  const char *zD = P("name");
  int nD = zD ? strlen(zD)+1 : 0;
  int mxLen;
  int nCol, nRow;
  int cnt, i;
  char *zPrefix;
  Stmt q;
  const char *zCI = P("ci");
................................................................................
  char *zUuid = 0;
  Blob dirname;
  Manifest *pM = 0;
  const char *zSubdirLink;

  login_check_credentials();
  if( !g.okHistory ){ login_needed(); return; }

  style_header("File List");
  sqlite3_create_function(g.db, "pathelement", 2, SQLITE_UTF8, 0,
                          pathelementFunc, 0, 0);

  /* If the name= parameter is an empty string, make it a NULL pointer */
  if( zD && strlen(zD)==0 ){ zD = 0; }

................................................................................
    @ <h2>Files of check-in [<a href="vinfo?name=%T(zUuid)">%s(zShort)</a>]
    @ %s(blob_str(&dirname))</h2>
    zSubdirLink = mprintf("%s/dir?ci=%S&amp;name=%T", g.zTop, zUuid, zPrefix);
    if( zD ){
      style_submenu_element("Top", "Top", "%s/dir?ci=%S", g.zTop, zUuid);
      style_submenu_element("All", "All", "%s/dir?name=%t", g.zTop, zD);
    }else{
      style_submenu_element("All", "All", "%s/dir", g.zBaseURL);
    }
  }else{
    int hasTrunk;
    @ <h2>The union of all files from all check-ins
    @ %s(blob_str(&dirname))</h2>
    hasTrunk = db_exists(
                  "SELECT 1 FROM tagxref WHERE tagid=%d AND value='trunk'",
                  TAG_BRANCH);
    zSubdirLink = mprintf("%s/dir?name=%T", g.zBaseURL, zPrefix);
    if( zD ){
      style_submenu_element("Top", "Top", "%s/dir", g.zBaseURL);
      style_submenu_element("Tip", "Tip", "%s/dir?name=%t&amp;ci=tip",
                            g.zBaseURL, zD);
      if( hasTrunk ){
        style_submenu_element("Trunk", "Trunk", "%s/dir?name=%t&amp;ci=trunk",
                               g.zBaseURL,zD);
      }
    }else{
      style_submenu_element("Tip", "Tip", "%s/dir?ci=tip", g.zBaseURL);
      if( hasTrunk ){
        style_submenu_element("Trunk", "Trunk", "%s/dir?ci=trunk", g.zBaseURL);
      }
    }
  }

  /* Compute the temporary table "localfiles" containing the names
  ** of all files and subdirectories in the zD[] directory.  
  **
................................................................................
    int c;

    db_prepare(&ins,
       "INSERT OR IGNORE INTO localfiles VALUES(pathelement(:x,0), :u)"
    );
    manifest_file_rewind(pM);
    while( (pFile = manifest_file_next(pM,0))!=0 ){

      if( nD>0 && memcmp(pFile->zName, zD, nD-1)!=0 ) continue;




      if( pPrev && memcmp(&pFile->zName[nD],&pPrev->zName[nD],nPrev)==0 ){


        continue;
      }
      db_bind_text(&ins, ":x", &pFile->zName[nD]);
      db_bind_text(&ins, ":u", pFile->zUuid);
      db_step(&ins);
      db_reset(&ins);
      pPrev = pFile;
................................................................................
    i++;
    zFN = db_column_text(&q, 0);
    if( zFN[0]=='/' ){
      zFN++;
      @ <li><a href="%s(zSubdirLink)%T(zFN)">%h(zFN)/</a></li>
    }else if( zCI ){
      const char *zUuid = db_column_text(&q, 1);
      @ <li><a href="%s(g.zBaseURL)/artifact?name=%s(zUuid)">%h(zFN)</a></li>
    }else{
      @ <li><a href="%s(g.zBaseURL)/finfo?name=%T(zPrefix)%T(zFN)">%h(zFN)
      @     </a></li>
    }
  }
  db_finalize(&q);
  manifest_destroy(pM);
  @ </ul></td></tr></table>
  style_footer();
}

  char *zSep = "";

  for(i=0; zPath[i]; i=j){
    for(j=i; zPath[j] && zPath[j]!='/'; j++){}
    if( zPath[j] && g.okHistory ){
      if( zCI ){
        blob_appendf(pOut, "%s<a href=\"%s/dir?ci=%S&amp;name=%#T\">%#h</a>", 
                     zSep, g.zTop, zCI, j, zPath, j-i, &zPath[i]);
      }else{
        blob_appendf(pOut, "%s<a href=\"%s/dir?name=%#T\">%#h</a>", 
                     zSep, g.zTop, j, zPath, j-i, &zPath[i]);
      }
    }else{
      blob_appendf(pOut, "%s%#h", zSep, j-i, &zPath[i]);
    }
    zSep = "/";
    while( zPath[j]=='/' ){ j++; }
  }
................................................................................
**
** Query parameters:
**
**    name=PATH        Directory to display.  Required.
**    ci=LABEL         Show only files in this check-in.  Optional.
*/
void page_dir(void){
  char *zD = fossil_strdup(P("name"));
  int nD = zD ? strlen(zD)+1 : 0;
  int mxLen;
  int nCol, nRow;
  int cnt, i;
  char *zPrefix;
  Stmt q;
  const char *zCI = P("ci");
................................................................................
  char *zUuid = 0;
  Blob dirname;
  Manifest *pM = 0;
  const char *zSubdirLink;

  login_check_credentials();
  if( !g.okHistory ){ login_needed(); return; }
  while( nD>1 && zD[nD-2]=='/' ){ zD[(--nD)-1] = 0; }
  style_header("File List");
  sqlite3_create_function(g.db, "pathelement", 2, SQLITE_UTF8, 0,
                          pathelementFunc, 0, 0);

  /* If the name= parameter is an empty string, make it a NULL pointer */
  if( zD && strlen(zD)==0 ){ zD = 0; }

................................................................................
    @ <h2>Files of check-in [<a href="vinfo?name=%T(zUuid)">%s(zShort)</a>]
    @ %s(blob_str(&dirname))</h2>
    zSubdirLink = mprintf("%s/dir?ci=%S&amp;name=%T", g.zTop, zUuid, zPrefix);
    if( zD ){
      style_submenu_element("Top", "Top", "%s/dir?ci=%S", g.zTop, zUuid);
      style_submenu_element("All", "All", "%s/dir?name=%t", g.zTop, zD);
    }else{
      style_submenu_element("All", "All", "%s/dir", g.zTop);
    }
  }else{
    int hasTrunk;
    @ <h2>The union of all files from all check-ins
    @ %s(blob_str(&dirname))</h2>
    hasTrunk = db_exists(
                  "SELECT 1 FROM tagxref WHERE tagid=%d AND value='trunk'",
                  TAG_BRANCH);
    zSubdirLink = mprintf("%s/dir?name=%T", g.zTop, zPrefix);
    if( zD ){
      style_submenu_element("Top", "Top", "%s/dir", g.zTop);
      style_submenu_element("Tip", "Tip", "%s/dir?name=%t&amp;ci=tip",
                            g.zTop, zD);
      if( hasTrunk ){
        style_submenu_element("Trunk", "Trunk", "%s/dir?name=%t&amp;ci=trunk",
                               g.zTop,zD);
      }
    }else{
      style_submenu_element("Tip", "Tip", "%s/dir?ci=tip", g.zTop);
      if( hasTrunk ){
        style_submenu_element("Trunk", "Trunk", "%s/dir?ci=trunk", g.zTop);
      }
    }
  }

  /* Compute the temporary table "localfiles" containing the names
  ** of all files and subdirectories in the zD[] directory.  
  **
................................................................................
    int c;

    db_prepare(&ins,
       "INSERT OR IGNORE INTO localfiles VALUES(pathelement(:x,0), :u)"
    );
    manifest_file_rewind(pM);
    while( (pFile = manifest_file_next(pM,0))!=0 ){
      if( nD>0 
       && (memcmp(pFile->zName, zD, nD-1)!=0 || pFile->zName[nD-1]!='/')
      ){
        continue;
      }
      if( pPrev
       && memcmp(&pFile->zName[nD],&pPrev->zName[nD],nPrev)==0
       && (pFile->zName[nD+nPrev]==0 || pFile->zName[nD+nPrev]=='/')
      ){
        continue;
      }
      db_bind_text(&ins, ":x", &pFile->zName[nD]);
      db_bind_text(&ins, ":u", pFile->zUuid);
      db_step(&ins);
      db_reset(&ins);
      pPrev = pFile;
................................................................................
    i++;
    zFN = db_column_text(&q, 0);
    if( zFN[0]=='/' ){
      zFN++;
      @ <li><a href="%s(zSubdirLink)%T(zFN)">%h(zFN)/</a></li>
    }else if( zCI ){
      const char *zUuid = db_column_text(&q, 1);
      @ <li><a href="%s(g.zTop)/artifact?name=%s(zUuid)">%h(zFN)</a></li>
    }else{
      @ <li><a href="%s(g.zTop)/finfo?name=%T(zPrefix)%T(zFN)">%h(zFN)
      @     </a></li>
    }
  }
  db_finalize(&q);
  manifest_destroy(pM);
  @ </ul></td></tr></table>
  style_footer();
}

  int i;
  unsigned int v;
  char *z;

  for(i=2; i<g.argc; i++){
    char zHex[30];
    v = (unsigned int)atoi(g.argv[i]);
    sprintf(zHex, "%x", v);
    z = captcha_render(zHex);
    printf("%s:\n%s", zHex, z);
    free(z);
  }
}

/*

  int i;
  unsigned int v;
  char *z;

  for(i=2; i<g.argc; i++){
    char zHex[30];
    v = (unsigned int)atoi(g.argv[i]);
    sqlite3_snprintf(sizeof(zHex), zHex, "%x", v);
    z = captcha_render(zHex);
    printf("%s:\n%s", zHex, z);
    free(z);
  }
}

/*

/*
** Shortcuts for cgi_parameter.  P("x") returns the value of query parameter
** or cookie "x", or NULL if there is no such parameter or cookie.  PD("x","y")
** does the same except "y" is returned in place of NULL if there is not match.
*/
#define P(x)        cgi_parameter((x),0)
#define PD(x,y)     cgi_parameter((x),(y))
#define QP(x)       quotable_string(cgi_parameter((x),0))
#define QPD(x,y)    quotable_string(cgi_parameter((x),(y)))


/*
** Destinations for output text.
*/
#define CGI_HEADER   0
#define CGI_BODY     1
................................................................................
  MD5Init(&ctx);
  MD5Update(&ctx,zTxt,nLen);
  MD5Final(digest,&ctx);
  for(j=i=0; i<16; i++,j+=2){
    bprintf(&zETag[j],sizeof(zETag)-j,"%02x",(int)digest[i]);
  }
  blob_appendf(&extraHeader, "ETag: %s\r\n", zETag);
  return strdup(zETag);
}

/*
** Do some cache control stuff. First, we generate an ETag and include it in
** the response headers. Second, we do whatever is necessary to determine if
** the request was asking about caching and whether we need to send back the
** response body. If we shouldn't send a body, return non-zero.
................................................................................
*/
static int check_cache_control(void){
  /* FIXME: there's some gotchas wth cookies and some headers. */
  char *zETag = cgi_add_etag(blob_buffer(&cgiContent),blob_size(&cgiContent));
  char *zMatch = P("HTTP_IF_NONE_MATCH");

  if( zETag!=0 && zMatch!=0 ) {
    char *zBuf = strdup(zMatch);
    if( zBuf!=0 ){
      char *zTok = 0;
      char *zPos;
      for( zTok = strtok_r(zBuf, ",\"",&zPos);
           zTok && strcasecmp(zTok,zETag);
           zTok =  strtok_r(0, ",\"",&zPos)){}
      free(zBuf);
      if(zTok) return 1;
    }
  }
  
  return 0;
}
#endif
................................................................................
** Do a redirect request to the URL given in the argument.
**
** The URL must be relative to the base of the fossil server.
*/
void cgi_redirect(const char *zURL){
  char *zLocation;
  CGIDEBUG(("redirect to %s\n", zURL));
  if( strncmp(zURL,"http:",5)==0 || strncmp(zURL,"https:",6)==0 || *zURL=='/' ){
    zLocation = mprintf("Location: %s\r\n", zURL);



  }else{
    zLocation = mprintf("Location: %s/%s\r\n", g.zBaseURL, zURL);
  }
  cgi_append_header(zLocation);
  cgi_reset_content();
  cgi_printf("<html>\n<p>Redirect to %h</p>\n</html>\n", zURL);
  cgi_set_status(302, "Moved Temporarily");
  free(zLocation);
  cgi_reply();
  fossil_exit(0);
}
void cgi_redirectf(const char *zFormat, ...){
  va_list ap;
................................................................................
        process_multipart_form_data(z, len);
      }
    }else if( strcmp(zType, "application/x-fossil")==0 ){
      blob_read_from_channel(&g.cgiIn, g.httpIn, len);
      blob_uncompress(&g.cgiIn, &g.cgiIn);
    }else if( strcmp(zType, "application/x-fossil-debug")==0 ){
      blob_read_from_channel(&g.cgiIn, g.httpIn, len);


    }
  }

  z = (char*)P("HTTP_COOKIE");
  if( z ){
    z = mprintf("%s",z);
    add_param_list(z, ';');
................................................................................
      CGIDEBUG(("env-match [%s] = [%s]\n", zName, zValue));
      return zValue;
    }
  }
  CGIDEBUG(("no-match [%s]\n", zName));
  return zDefault;
}


















/*
** Return the name of the i-th CGI parameter.  Return NULL if there
** are fewer than i registered CGI parmaeters.
*/
const char *cgi_parameter_name(int i){
  if( i>=0 && i<nUsedQP ){
................................................................................
    while( waitpid(0, 0, WNOHANG)>0 ){
      nchildren--;
    }
  }
  /* NOT REACHED */  
  fossil_exit(1);
#endif


}


/*
** Name of days and months.
*/
static const char *azDays[] =
................................................................................
  memset(&t, 0, sizeof(t));
  if( 7==sscanf(zDate, "%12[A-Za-z,] %d %12[A-Za-z] %d %d:%d:%d", zIgnore,
                       &t.tm_mday, zMonth, &t.tm_year, &t.tm_hour, &t.tm_min,
                       &t.tm_sec)){

    if( t.tm_year > 1900 ) t.tm_year -= 1900;
    for(t.tm_mon=0; azMonths[t.tm_mon]; t.tm_mon++){
      if( !strncasecmp( azMonths[t.tm_mon], zMonth, 3 )){
        return mkgmtime(&t);
      }
    }
  }

  return 0;
}

/*
** Shortcuts for cgi_parameter.  P("x") returns the value of query parameter
** or cookie "x", or NULL if there is no such parameter or cookie.  PD("x","y")
** does the same except "y" is returned in place of NULL if there is not match.
*/
#define P(x)        cgi_parameter((x),0)
#define PD(x,y)     cgi_parameter((x),(y))
#define PT(x)       cgi_parameter_trimmed((x),0)
#define PDT(x,y)    cgi_parameter_trimmed((x),(y))


/*
** Destinations for output text.
*/
#define CGI_HEADER   0
#define CGI_BODY     1
................................................................................
  MD5Init(&ctx);
  MD5Update(&ctx,zTxt,nLen);
  MD5Final(digest,&ctx);
  for(j=i=0; i<16; i++,j+=2){
    bprintf(&zETag[j],sizeof(zETag)-j,"%02x",(int)digest[i]);
  }
  blob_appendf(&extraHeader, "ETag: %s\r\n", zETag);
  return fossil_strdup(zETag);
}

/*
** Do some cache control stuff. First, we generate an ETag and include it in
** the response headers. Second, we do whatever is necessary to determine if
** the request was asking about caching and whether we need to send back the
** response body. If we shouldn't send a body, return non-zero.
................................................................................
*/
static int check_cache_control(void){
  /* FIXME: there's some gotchas wth cookies and some headers. */
  char *zETag = cgi_add_etag(blob_buffer(&cgiContent),blob_size(&cgiContent));
  char *zMatch = P("HTTP_IF_NONE_MATCH");

  if( zETag!=0 && zMatch!=0 ) {
    char *zBuf = fossil_strdup(zMatch);
    if( zBuf!=0 ){
      char *zTok = 0;
      char *zPos;
      for( zTok = strtok_r(zBuf, ",\"",&zPos);
           zTok && fossil_stricmp(zTok,zETag);
           zTok =  strtok_r(0, ",\"",&zPos)){}
      fossil_free(zBuf);
      if(zTok) return 1;
    }
  }
  
  return 0;
}
#endif
................................................................................
** Do a redirect request to the URL given in the argument.
**
** The URL must be relative to the base of the fossil server.
*/
void cgi_redirect(const char *zURL){
  char *zLocation;
  CGIDEBUG(("redirect to %s\n", zURL));
  if( strncmp(zURL,"http:",5)==0 || strncmp(zURL,"https:",6)==0 ){
    zLocation = mprintf("Location: %s\r\n", zURL);
  }else if( *zURL=='/' ){
    zLocation = mprintf("Location: %.*s%s\r\n",
         strlen(g.zBaseURL)-strlen(g.zTop), g.zBaseURL, zURL);
  }else{
    zLocation = mprintf("Location: %s/%s\r\n", g.zBaseURL, zURL);
  }
  cgi_append_header(zLocation);
  cgi_reset_content();
  cgi_printf("<html>\n<p>Redirect to %h</p>\n</html>\n", zLocation);
  cgi_set_status(302, "Moved Temporarily");
  free(zLocation);
  cgi_reply();
  fossil_exit(0);
}
void cgi_redirectf(const char *zFormat, ...){
  va_list ap;
................................................................................
        process_multipart_form_data(z, len);
      }
    }else if( strcmp(zType, "application/x-fossil")==0 ){
      blob_read_from_channel(&g.cgiIn, g.httpIn, len);
      blob_uncompress(&g.cgiIn, &g.cgiIn);
    }else if( strcmp(zType, "application/x-fossil-debug")==0 ){
      blob_read_from_channel(&g.cgiIn, g.httpIn, len);
    }else if( strcmp(zType, "application/x-fossil-uncompressed")==0 ){
      blob_read_from_channel(&g.cgiIn, g.httpIn, len);
    }
  }

  z = (char*)P("HTTP_COOKIE");
  if( z ){
    z = mprintf("%s",z);
    add_param_list(z, ';');
................................................................................
      CGIDEBUG(("env-match [%s] = [%s]\n", zName, zValue));
      return zValue;
    }
  }
  CGIDEBUG(("no-match [%s]\n", zName));
  return zDefault;
}

/*
** Return the value of a CGI parameter with leading and trailing
** spaces removed.
*/
char *cgi_parameter_trimmed(const char *zName, const char *zDefault){
  const char *zIn;
  char *zOut;
  int i;
  zIn = cgi_parameter(zName, 0);
  if( zIn==0 ) zIn = zDefault;
  while( fossil_isspace(zIn[0]) ) zIn++;
  zOut = fossil_strdup(zIn);
  for(i=0; zOut[i]; i++){}
  while( i>0 && fossil_isspace(zOut[i-1]) ) zOut[--i] = 0;
  return zOut;
}

/*
** Return the name of the i-th CGI parameter.  Return NULL if there
** are fewer than i registered CGI parmaeters.
*/
const char *cgi_parameter_name(int i){
  if( i>=0 && i<nUsedQP ){
................................................................................
    while( waitpid(0, 0, WNOHANG)>0 ){
      nchildren--;
    }
  }
  /* NOT REACHED */  
  fossil_exit(1);
#endif
  /* NOT REACHED */
  return 0;
}


/*
** Name of days and months.
*/
static const char *azDays[] =
................................................................................
  memset(&t, 0, sizeof(t));
  if( 7==sscanf(zDate, "%12[A-Za-z,] %d %12[A-Za-z] %d %d:%d:%d", zIgnore,
                       &t.tm_mday, zMonth, &t.tm_year, &t.tm_hour, &t.tm_min,
                       &t.tm_sec)){

    if( t.tm_year > 1900 ) t.tm_year -= 1900;
    for(t.tm_mon=0; azMonths[t.tm_mon]; t.tm_mon++){
      if( !fossil_strnicmp( azMonths[t.tm_mon], zMonth, 3 )){
        return mkgmtime(&t);
      }
    }
  }

  return 0;
}

  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPathname = db_column_text(&q,0);
    int isDeleted = db_column_int(&q, 1);
    int isChnged = db_column_int(&q,2);
    int isNew = db_column_int(&q,3)==0;
    int isRenamed = db_column_int(&q,4);
    char *zFullName = mprintf("%s/%s", g.zLocalRoot, zPathname);
    blob_append(report, zPrefix, nPrefix);
    if( isDeleted ){
      blob_appendf(report, "DELETED    %s\n", zPathname);
    }else if( !file_isfile(zFullName) ){
      if( access(zFullName, 0)==0 ){
        blob_appendf(report, "NOT_A_FILE %s\n", zPathname);
        if( missingIsFatal ){
................................................................................
/*
** COMMAND: changes
**
** Usage: %fossil changes
**
** Report on the edit status of all files in the current checkout.
** See also the "status" and "extra" commands.





*/
void changes_cmd(void){
  Blob report;
  int vid;

  db_must_be_within_tree();
  blob_zero(&report);
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, 0);
  status_report(&report, "", 0);
  blob_write_to_file(&report, "-");
}

/*
** COMMAND: status
**
** Usage: %fossil status
**
** Report on the status of the current checkout.





*/
void status_cmd(void){
  int vid;
  db_must_be_within_tree();
       /* 012345678901234 */
  printf("repository:   %s\n", db_lget("repository",""));
  printf("local-root:   %s\n", g.zLocalRoot);
  printf("server-code:  %s\n", db_get("server-code", ""));
  vid = db_lget_int("checkout", 0);
  if( vid ){
    show_common_info(vid, "checkout:", 0);
  }
  changes_cmd();
}

/*
** COMMAND: ls
**
................................................................................
  int vid;
  Stmt q;
  int isBrief;

  isBrief = find_option("l","l", 0)==0;
  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, 0);
  db_prepare(&q,
     "SELECT pathname, deleted, rid, chnged, coalesce(origname!=pathname,0)"
     "  FROM vfile"
     " ORDER BY 1"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPathname = db_column_text(&q,0);
    int isDeleted = db_column_int(&q, 1);
    int isNew = db_column_int(&q,2)==0;
    int chnged = db_column_int(&q,3);
    int renamed = db_column_int(&q,4);
    char *zFullName = mprintf("%s/%s", g.zLocalRoot, zPathname);
    if( isBrief ){
      printf("%s\n", zPathname);
    }else if( isNew ){
      printf("ADDED      %s\n", zPathname);


    }else if( !file_isfile(zFullName) ){
      if( access(zFullName, 0)==0 ){
        printf("NOT_A_FILE %s\n", zPathname);
      }else{
        printf("MISSING    %s\n", zPathname);
      }
    }else if( isDeleted ){
      printf("DELETED    %s\n", zPathname);
    }else if( chnged ){
      printf("EDITED     %s\n", zPathname);
    }else if( renamed ){
      printf("RENAMED    %s\n", zPathname);
    }else{
      printf("UNCHANGED  %s\n", zPathname);
    }
    free(zFullName);
  }
  db_finalize(&q);
}

/*
** Construct and return a string which is an SQL expression that will
** be TRUE if value zVal matches any of the GLOB expressions in the list
** zGlobList.  For example:
**
**    zVal:       "x"
**    zGlobList:  "*.o,*.obj"
**
**    Result:     "(x GLOB '*.o' OR x GLOB '*.obj')"
**
** Each element of the GLOB list may optionally be enclosed in either '...'
** or "...".  This allows commas in the expression.  Whitespace at the
** beginning and end of each GLOB pattern is ignored, except when enclosed
** within '...' or "...".
**
** This routine makes no effort to free the memory space it uses.
*/
char *glob_expr(const char *zVal, const char *zGlobList){
  Blob expr;
  char *zSep = "(";
  int nTerm = 0;
  int i;
  int cTerm;

  if( zGlobList==0 || zGlobList[0]==0 ) return "0";
  blob_zero(&expr);
  while( zGlobList[0] ){
    while( fossil_isspace(zGlobList[0]) || zGlobList[0]==',' ) zGlobList++;
    if( zGlobList[0]==0 ) break;
    if( zGlobList[0]=='\'' || zGlobList[0]=='"' ){
      cTerm = zGlobList[0];
      zGlobList++;
    }else{
      cTerm = ',';
    }
    for(i=0; zGlobList[i] && zGlobList[i]!=cTerm; i++){}
    if( cTerm==',' ){
      while( i>0 && fossil_isspace(zGlobList[i-1]) ){ i--; }
    }
    blob_appendf(&expr, "%s%s GLOB '%.*q'", zSep, zVal, i, zGlobList);
    zSep = " OR ";
    if( cTerm!=',' && zGlobList[i] ) i++;
    zGlobList += i;
    if( zGlobList[0] ) zGlobList++;
    nTerm++;
  }
  if( nTerm ){
    blob_appendf(&expr, ")");
    return blob_str(&expr);
  }else{
    return "0";
  }
}

/*
** COMMAND: extras
** Usage: %fossil extras ?--dotfiles? ?--ignore GLOBPATTERN?
**
** Print a list of all files in the source tree that are not part of
** the current checkout.  See also the "clean" command.
**
** Files and subdirectories whose names begin with "." are normally
** ignored but can be included by adding the --dotfiles option.




*/
void extra_cmd(void){
  Blob path;
  Blob repo;
  Stmt q;
  int n;
  const char *zIgnoreFlag = find_option("ignore",0,1);
  int allFlag = find_option("dotfiles",0,0)!=0;
  int outputManifest = db_get_boolean("manifest",0);


  db_must_be_within_tree();

  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
  n = strlen(g.zLocalRoot);
  blob_init(&path, g.zLocalRoot, n-1);
  if( zIgnoreFlag==0 ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }

  vfile_scan(0, &path, blob_size(&path), allFlag);

  db_prepare(&q, 
      "SELECT x FROM sfile"
      " WHERE x NOT IN ('%s','%s','_FOSSIL_',"
                       "'_FOSSIL_-journal','.fos','.fos-journal',"
                       "'_FOSSIL_-wal','_FOSSIL_-shm','.fos-wal',"
                       "'.fos-shm')"
      "   AND NOT %s"
      " ORDER BY 1",
      outputManifest ? "manifest" : "_FOSSIL_",
      outputManifest ? "manifest.uuid" : "_FOSSIL_",
      glob_expr("x", zIgnoreFlag)

  );
  if( file_tree_name(g.zRepositoryName, &repo, 0) ){
    db_multi_exec("DELETE FROM sfile WHERE x=%B", &repo);
  }
  while( db_step(&q)==SQLITE_ROW ){
    printf("%s\n", db_column_text(&q, 0));
  }
  db_finalize(&q);
}

/*
** COMMAND: clean
** Usage: %fossil clean ?--force? ?--dotfiles?
**
** Delete all "extra" files in the source tree.  "Extra" files are
** files that are not officially part of the checkout.  See also
** the "extra" command. This operation cannot be undone. 
**
** You will be prompted before removing each file. If you are
** sure you wish to remove all "extra" files you can specify the
** optional --force flag and no prompts will be issued.
**
** Files and subdirectories whose names begin with "." are
** normally ignored.  They are included if the "--dotfiles" option
** is used.




*/
void clean_cmd(void){
  int allFlag;
  int dotfilesFlag;

  Blob path, repo;
  Stmt q;
  int n;


  allFlag = find_option("force","f",0)!=0;
  dotfilesFlag = find_option("dotfiles",0,0)!=0;

  db_must_be_within_tree();



  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
  n = strlen(g.zLocalRoot);
  blob_init(&path, g.zLocalRoot, n-1);
  vfile_scan(0, &path, blob_size(&path), dotfilesFlag);
  db_prepare(&q, 
      "SELECT %Q || x FROM sfile"
      " WHERE x NOT IN ('manifest','manifest.uuid','_FOSSIL_',"
                       "'_FOSSIL_-journal','.fos','.fos-journal',"
                       "'_FOSSIL_-wal','_FOSSIL_-shm','.fos-wal',"
                       "'.fos-shm')"
      " ORDER BY 1", g.zLocalRoot);

  if( file_tree_name(g.zRepositoryName, &repo, 0) ){
    db_multi_exec("DELETE FROM sfile WHERE x=%B", &repo);
  }
  while( db_step(&q)==SQLITE_ROW ){
    if( allFlag ){
      unlink(db_column_text(&q, 0));
    }else{
................................................................................
  blob_init(&text, zInit, -1);
  blob_append(&text,
    "\n"
    "# Enter comments on this check-in.  Lines beginning with # are ignored.\n"
    "# The check-in comment follows wiki formatting rules.\n"
    "#\n", -1
  );

  if( zBranch && zBranch[0] ){
    blob_appendf(&text, "# tags: %s\n#\n", zBranch);
  }else{
    char *zTags = info_tags_of_checkin(parent_rid, 1);
    if( zTags )  blob_appendf(&text, "# tags: %z\n#\n", zTags);
  }
  if( g.markPrivate ){
................................................................................
  if( zEditor==0 ){
    zEditor = getenv("VISUAL");
  }
  if( zEditor==0 ){
    zEditor = getenv("EDITOR");
  }
  if( zEditor==0 ){
#if defined(_WIN32)
    zEditor = "notepad";







#else
    zEditor = "ed";
#endif
  }
  zFile = db_text(0, "SELECT '%qci-comment-' || hex(randomblob(6)) || '.txt'",
                   g.zLocalRoot);

#if defined(_WIN32)
  blob_add_cr(&text);
#endif
  blob_write_to_file(&text, zFile);

  zCmd = mprintf("%s \"%s\"", zEditor, zFile);
  printf("%s\n", zCmd);
  if( fossil_system(zCmd) ){
    fossil_panic("editor aborted");
  }
  blob_reset(&text);
  blob_read_from_file(&text, zFile);








  blob_remove_cr(&text);
  unlink(zFile);
  free(zFile);
  blob_zero(pComment);
  while( blob_line(&text, &line) ){
    int i, n;
    char *z;
................................................................................
      g.aCommitFile[ii-2] = iId;
      blob_reset(&b);
    }
    g.aCommitFile[ii-2] = 0;
  }
}

/*
** Return true if the check-in with RID=rid is a leaf.
** A leaf has no children in the same branch. 
*/
int is_a_leaf(int rid){
  int rc;
  static const char zSql[] = 
    @ SELECT 1 FROM plink
    @  WHERE pid=%d
    @    AND coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.pid), 'trunk')
    @       =coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.cid), 'trunk')
  ;
  rc = db_int(0, zSql, rid, TAG_BRANCH, TAG_BRANCH);
  return rc==0;
}

/*
** Make sure the current check-in with timestamp zDate is younger than its
** ancestor identified rid and zUuid.  Throw a fatal error if not.
*/
static void checkin_verify_younger(
  int rid,              /* The record ID of the ancestor */
  const char *zUuid,    /* The artifact ID of the ancestor */
................................................................................

/*
** zDate should be a valid date string.  Convert this string into the
** format YYYY-MM-DDTHH:MM:SS.  If the string is not a valid date, 
** print a fatal error and quit.
*/
char *date_in_standard_format(const char *zInputDate){
  char *zDate = db_text(0, "SELECT datetime(%Q)", zInputDate);
  if( zDate[0]==0 ){
    fossil_fatal("unrecognized date format (%s): use \"YYYY-MM-DD HH:MM:SS\"",
                 zInputDate);
  }
  assert( strlen(zDate)==19 );
  assert( zDate[10]==' ' );
  zDate[10] = 'T';

  return zDate;
}

/*
** Create a manifest.
*/
static void create_manifest(
................................................................................
  int vid,                    /* blob-id of the parent manifest */
  int verifyDate,             /* Verify that child is younger */
  Blob *pCksum,               /* Repository checksum.  May be 0 */
  const char *zDateOvrd,      /* Date override.  If 0 then use 'now' */
  const char *zUserOvrd,      /* User override.  If 0 then use g.zLogin */
  const char *zBranch,        /* Branch name.  May be 0 */
  const char *zBgColor,       /* Background color.  May be 0 */

  int *pnFBcard               /* Number of generated B- and F-cards */
){
  char *zDate;                /* Date of the check-in */
  char *zParentUuid;          /* UUID of parent check-in */
  Blob filename;              /* A single filename */
  int nBasename;              /* Size of base filename */
  Stmt q;                     /* Query of files changed */
................................................................................
    pFile = 0;
  }
  blob_appendf(pOut, "C %F\n", blob_str(pComment));
  zDate = date_in_standard_format(zDateOvrd ? zDateOvrd : "now");
  blob_appendf(pOut, "D %s\n", zDate);
  zDate[10] = ' ';
  db_prepare(&q,
    "SELECT pathname, uuid, origname, blob.rid, isexe"

    "  FROM vfile JOIN blob ON vfile.mrid=blob.rid"

    " WHERE NOT deleted AND vfile.vid=%d"
    " ORDER BY 1", vid);
  blob_zero(&filename);
  blob_appendf(&filename, "%s", g.zLocalRoot);
  nBasename = blob_size(&filename);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zOrig = db_column_text(&q, 2);
    int frid = db_column_int(&q, 3);
    int isexe = db_column_int(&q, 4);

    const char *zPerm;
    int cmp;
    blob_append(&filename, zName, -1);
#if !defined(_WIN32)
    /* For unix, extract the "executable" permission bit directly from
    ** the filesystem.  On windows, the "executable" bit is retained
    ** unchanged from the original. */



    isexe = file_isexe(blob_str(&filename));
#endif
    if( isexe ){
      zPerm = " x";
    }else{
      zPerm = "";
    }
    if( !g.markPrivate ) content_make_public(frid);
    while( pFile && strcmp(pFile->zName,zName)<0 ){
      blob_appendf(pOut, "F %F\n", pFile->zName);
      pFile = manifest_file_next(pBaseline, 0);
      nFBcard++;
    }
    cmp = 1;
    if( pFile==0
      || (cmp = strcmp(pFile->zName,zName))!=0
      || strcmp(pFile->zUuid, zUuid)!=0
    ){
      blob_resize(&filename, nBasename);
      if( zOrig==0 || strcmp(zOrig,zName)==0 ){
        blob_appendf(pOut, "F %F %s%s\n", zName, zUuid, zPerm);
      }else{
        if( zPerm[0]==0 ){ zPerm = " w"; }
        blob_appendf(pOut, "F %F %s%s %F\n", zName, zUuid, zPerm, zOrig);
      }
      nFBcard++;
    }
................................................................................
  }
  db_finalize(&q2);
  free(zDate);

  blob_appendf(pOut, "\n");
  if( pCksum ) blob_appendf(pOut, "R %b\n", pCksum);
  if( zBranch && zBranch[0] ){
    Stmt q;
    if( zBgColor && zBgColor[0] ){
      blob_appendf(pOut, "T *bgcolor * %F\n", zBgColor);
    }
    blob_appendf(pOut, "T *branch * %F\n", zBranch);
    blob_appendf(pOut, "T *sym-%F *\n", zBranch);

    /* Cancel all other symbolic tags */










    db_prepare(&q,
        "SELECT tagname FROM tagxref, tag"
        " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
        "   AND tagtype>0 AND tagname GLOB 'sym-*'"
        "   AND tagname!='sym-'||%Q"
        " ORDER BY tagname",
        vid, zBranch);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zTag = db_column_text(&q, 0);
      blob_appendf(pOut, "T -%F *\n", zTag);
    }
................................................................................
  }  
  blob_appendf(pOut, "U %F\n", zUserOvrd ? zUserOvrd : g.zLogin);
  md5sum_blob(pOut, &mcksum);
  blob_appendf(pOut, "Z %b\n", &mcksum);
  if( pnFBcard ) *pnFBcard = nFBcard;
}






















































/*
** COMMAND: ci
** COMMAND: commit
**
** Usage: %fossil commit ?OPTIONS? ?FILE...?
**
................................................................................
**
** A check-in is not permitted to fork unless the --force or -f
** option appears.  A check-in is not allowed against a closed check-in.
**
** The --private option creates a private check-in that is never synced.
** Children of private check-ins are automatically private.
**


** Options:
**
**    --comment|-m COMMENT-TEXT
**    --message-file|-M COMMENT-FILE
**    --branch NEW-BRANCH-NAME
**    --bgcolor COLOR
**    --nosign
**    --force|-f
**    --private
**    --baseline
**    --delta

**    
*/
void commit_cmd(void){
  int hasChanges;        /* True if unsaved changes exist */
  int vid;               /* blob-id of parent version */
  int nrid;              /* blob-id of a modified file */
  int nvid;              /* Blob-id of the new check-in */
................................................................................
  int outputManifest;    /* True to output "manifest" and "manifest.uuid" */
  int testRun;           /* True for a test run.  Debugging only */
  const char *zBranch;   /* Create a new branch with this name */
  const char *zBgColor;  /* Set background color when branching */
  const char *zDateOvrd; /* Override date string */
  const char *zUserOvrd; /* Override user name */
  const char *zComFile;  /* Read commit message from this file */

  Blob manifest;         /* Manifest in baseline form */
  Blob muuid;            /* Manifest uuid */
  Blob cksum1, cksum2;   /* Before and after commit checksums */
  Blob cksum1b;          /* Checksum recorded in the manifest */
  int szD;               /* Size of the delta manifest */
  int szB;               /* Size of the baseline manifest */
 
................................................................................
    fossil_fatal("cannot use --delta and --baseline together");
  }
  testRun = find_option("test",0,0)!=0;
  zComment = find_option("comment","m",1);
  forceFlag = find_option("force", "f", 0)!=0;
  zBranch = find_option("branch","b",1);
  zBgColor = find_option("bgcolor",0,1);

  zComFile = find_option("message-file", "M", 1);
  if( find_option("private",0,0) ){
    g.markPrivate = 1;
    if( zBranch==0 ) zBranch = "private";
    if( zBgColor==0 ) zBgColor = "#fec084";  /* Orange */
  }
  zDateOvrd = find_option("date-override",0,1);
................................................................................
    g.markPrivate = 1;
  }

  /*
  ** Autosync if autosync is enabled and this is not a private check-in.
  */
  if( !g.markPrivate ){
    autosync(AUTOSYNC_PULL);







  }

  /* Require confirmation to continue with the check-in if there is
  ** clock skew
  */
  if( g.clockSkewSeen ){
    Blob ans;
................................................................................
  ** been modified, bail out now.
  */
  if( g.aCommitFile ){
    Blob unmodified;
    memset(&unmodified, 0, sizeof(Blob));
    blob_init(&unmodified, 0, 0);
    db_blob(&unmodified, 
      "SELECT pathname FROM vfile WHERE chnged = 0 AND file_is_selected(id)"

    );
    if( strlen(blob_str(&unmodified)) ){
      fossil_panic("file %s has not changed", blob_str(&unmodified));
    }
  }

  /*
  ** Do not allow a commit that will cause a fork unless the --force flag
  ** is used or unless this is a private check-in.
  */
................................................................................
  }

  /* Step 1: Insert records for all modified files into the blob 
  ** table. If there were arguments passed to this command, only
  ** the identified fils are inserted (if they have been modified).
  */
  db_prepare(&q,
    "SELECT id, %Q || pathname, mrid FROM vfile "
    "WHERE chnged==1 AND NOT deleted AND file_is_selected(id)"
    , g.zLocalRoot
  );
  while( db_step(&q)==SQLITE_ROW ){
    int id, rid;
    const char *zFullname;
    Blob content;


    id = db_column_int(&q, 0);
    zFullname = db_column_text(&q, 1);
    rid = db_column_int(&q, 2);


    blob_zero(&content);
    blob_read_from_file(&content, zFullname);

    nrid = content_put(&content, 0, 0);
    blob_reset(&content);
    if( rid>0 ){
      content_deltify(rid, nrid, 0);
    }
    db_multi_exec("UPDATE vfile SET mrid=%d, rid=%d WHERE id=%d", nrid,nrid,id);
    db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
  }
................................................................................
    blob_append(&comment, "(no comment)", -1);
  }
  if( forceDelta ){
    blob_zero(&manifest);
  }else{
    create_manifest(&manifest, 0, 0, &comment, vid,
                    !forceFlag, useCksum ? &cksum1 : 0,
                    zDateOvrd, zUserOvrd, zBranch, zBgColor, &szB);
  }

  /* See if a delta-manifest would be more appropriate */
  if( !forceBaseline ){
    const char *zBaselineUuid;
    Manifest *pParent;
    Manifest *pBaseline;
................................................................................
      zBaselineUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
      pBaseline = pParent;
    }
    if( pBaseline ){
      Blob delta;
      create_manifest(&delta, zBaselineUuid, pBaseline, &comment, vid,
                      !forceFlag, useCksum ? &cksum1 : 0,
                      zDateOvrd, zUserOvrd, zBranch, zBgColor, &szD);
      /*
      ** At this point, two manifests have been constructed, either of
      ** which would work for this checkin.  The first manifest (held
      ** in the "manifest" variable) is a baseline manifest and the second
      ** (held in variable named "delta") is a delta manifest.  The
      ** question now is: which manifest should we use?
      **
................................................................................
  if( outputManifest ){
    zManifestFile = mprintf("%smanifest", g.zLocalRoot);
    blob_write_to_file(&manifest, zManifestFile);
    blob_reset(&manifest);
    blob_read_from_file(&manifest, zManifestFile);
    free(zManifestFile);
  }
  nvid = content_put(&manifest, 0, 0);
  if( nvid==0 ){
    fossil_panic("trouble committing manifest: %s", g.zErrMsg);
  }
  db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nvid);
  manifest_crosslink(nvid, &manifest);

  content_deltify(vid, nvid, 0);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", nvid);
  printf("New_Version: %s\n", zUuid);
  if( outputManifest ){
    zManifestFile = mprintf("%smanifest.uuid", g.zLocalRoot);
    blob_zero(&muuid);
    blob_appendf(&muuid, "%s\n", zUuid);
................................................................................
  if( useCksum ){
    /* Verify that the repository checksum matches the expected checksum
    ** calculated before the checkin started (and stored as the R record
    ** of the manifest file).
    */
    vfile_aggregate_checksum_repository(nvid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      fossil_panic("tree checksum does not match repository after commit");



    }
  
    /* Verify that the manifest checksum matches the expected checksum */
    vfile_aggregate_checksum_manifest(nvid, &cksum2, &cksum1b);
    if( blob_compare(&cksum1, &cksum1b) ){
      fossil_panic("manifest checksum does not agree with manifest: "
                   "%b versus %b", &cksum1, &cksum1b);
    }
    if( blob_compare(&cksum1, &cksum2) ){

      fossil_panic("tree checksum does not match manifest after commit: "
                   "%b versus %b", &cksum1, &cksum2);
    }
  
    /* Verify that the commit did not modify any disk images. */
    vfile_aggregate_checksum_disk(nvid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      fossil_panic("tree checksums before and after commit do not match");
    }
  }

  /* Clear the undo/redo stack */
  undo_reset();

  /* Commit */

  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPathname = db_column_text(&q,0);
    int isDeleted = db_column_int(&q, 1);
    int isChnged = db_column_int(&q,2);
    int isNew = db_column_int(&q,3)==0;
    int isRenamed = db_column_int(&q,4);
    char *zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
    blob_append(report, zPrefix, nPrefix);
    if( isDeleted ){
      blob_appendf(report, "DELETED    %s\n", zPathname);
    }else if( !file_isfile(zFullName) ){
      if( access(zFullName, 0)==0 ){
        blob_appendf(report, "NOT_A_FILE %s\n", zPathname);
        if( missingIsFatal ){
................................................................................
/*
** COMMAND: changes
**
** Usage: %fossil changes
**
** Report on the edit status of all files in the current checkout.
** See also the "status" and "extra" commands.
**
** Options:
**
**    --sha1sum         Verify file status using SHA1 hashing rather
**                      than relying on file mtimes.
*/
void changes_cmd(void){
  Blob report;
  int vid;
  int useSha1sum = find_option("sha1sum", 0, 0)!=0;
  db_must_be_within_tree();
  blob_zero(&report);
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, 0, useSha1sum);
  status_report(&report, "", 0);
  blob_write_to_file(&report, "-");
}

/*
** COMMAND: status
**
** Usage: %fossil status
**
** Report on the status of the current checkout.
**
** Options:
**
**    --sha1sum         Verify file status using SHA1 hashing rather
**                      than relying on file mtimes.
*/
void status_cmd(void){
  int vid;
  db_must_be_within_tree();
       /* 012345678901234 */
  printf("repository:   %s\n", db_lget("repository",""));
  printf("local-root:   %s\n", g.zLocalRoot);
  printf("server-code:  %s\n", db_get("server-code", ""));
  vid = db_lget_int("checkout", 0);
  if( vid ){
    show_common_info(vid, "checkout:", 1, 1);
  }
  changes_cmd();
}

/*
** COMMAND: ls
**
................................................................................
  int vid;
  Stmt q;
  int isBrief;

  isBrief = find_option("l","l", 0)==0;
  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, 0, 0);
  db_prepare(&q,
     "SELECT pathname, deleted, rid, chnged, coalesce(origname!=pathname,0)"
     "  FROM vfile"
     " ORDER BY 1"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPathname = db_column_text(&q,0);
    int isDeleted = db_column_int(&q, 1);
    int isNew = db_column_int(&q,2)==0;
    int chnged = db_column_int(&q,3);
    int renamed = db_column_int(&q,4);
    char *zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
    if( isBrief ){
      printf("%s\n", zPathname);
    }else if( isNew ){
      printf("ADDED      %s\n", zPathname);
    }else if( isDeleted ){
      printf("DELETED    %s\n", zPathname);
    }else if( !file_isfile(zFullName) ){
      if( access(zFullName, 0)==0 ){
        printf("NOT_A_FILE %s\n", zPathname);
      }else{
        printf("MISSING    %s\n", zPathname);
      }


    }else if( chnged ){
      printf("EDITED     %s\n", zPathname);
    }else if( renamed ){
      printf("RENAMED    %s\n", zPathname);
    }else{
      printf("UNCHANGED  %s\n", zPathname);
    }
    free(zFullName);
  }
  db_finalize(&q);
}























































/*
** COMMAND: extras
** Usage: %fossil extras ?--dotfiles? ?--ignore GLOBPATTERN?
**
** Print a list of all files in the source tree that are not part of
** the current checkout.  See also the "clean" command.
**
** Files and subdirectories whose names begin with "." are normally
** ignored but can be included by adding the --dotfiles option.
**
** The GLOBPATTERN is a comma-separated list of GLOB expressions for
** files that are ignored.  The GLOBPATTERN specified by the "ignore-glob"
** is used if the --ignore option is omitted.
*/
void extra_cmd(void){
  Blob path;
  Blob repo;
  Stmt q;
  int n;
  const char *zIgnoreFlag = find_option("ignore",0,1);
  int allFlag = find_option("dotfiles",0,0)!=0;
  int outputManifest;
  Glob *pIgnore;

  db_must_be_within_tree();
  outputManifest = db_get_boolean("manifest",0);
  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
  n = strlen(g.zLocalRoot);
  blob_init(&path, g.zLocalRoot, n-1);
  if( zIgnoreFlag==0 ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }
  pIgnore = glob_create(zIgnoreFlag);
  vfile_scan(&path, blob_size(&path), allFlag, pIgnore);
  glob_free(pIgnore);
  db_prepare(&q, 
      "SELECT x FROM sfile"
      " WHERE x NOT IN (%s)"




      " ORDER BY 1",



      fossil_all_reserved_names()
  );
  if( file_tree_name(g.zRepositoryName, &repo, 0) ){
    db_multi_exec("DELETE FROM sfile WHERE x=%B", &repo);
  }
  while( db_step(&q)==SQLITE_ROW ){
    printf("%s\n", db_column_text(&q, 0));
  }
  db_finalize(&q);
}

/*
** COMMAND: clean
** Usage: %fossil clean ?--force? ?--dotfiles? ?--ignore GLOBPATTERN?
**
** Delete all "extra" files in the source tree.  "Extra" files are
** files that are not officially part of the checkout.  See also
** the "extra" command. This operation cannot be undone. 
**
** You will be prompted before removing each file. If you are
** sure you wish to remove all "extra" files you can specify the
** optional --force flag and no prompts will be issued.
**
** Files and subdirectories whose names begin with "." are
** normally ignored.  They are included if the "--dotfiles" option
** is used.
**
** The GLOBPATTERN is a comma-separated list of GLOB expressions for
** files that are ignored.  The GLOBPATTERN specified by the "ignore-glob"
** is used if the --ignore option is omitted.
*/
void clean_cmd(void){
  int allFlag;
  int dotfilesFlag;
  const char *zIgnoreFlag;
  Blob path, repo;
  Stmt q;
  int n;
  Glob *pIgnore;

  allFlag = find_option("force","f",0)!=0;
  dotfilesFlag = find_option("dotfiles",0,0)!=0;
  zIgnoreFlag = find_option("ignore",0,1);
  db_must_be_within_tree();
  if( zIgnoreFlag==0 ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }
  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
  n = strlen(g.zLocalRoot);
  blob_init(&path, g.zLocalRoot, n-1);
  pIgnore = glob_create(zIgnoreFlag);
  vfile_scan(&path, blob_size(&path), dotfilesFlag, pIgnore);
  glob_free(pIgnore);
  db_prepare(&q, 
      "SELECT %Q || x FROM sfile"
      " WHERE x NOT IN (%s)"
      " ORDER BY 1",
      g.zLocalRoot, fossil_all_reserved_names()
  );
  if( file_tree_name(g.zRepositoryName, &repo, 0) ){
    db_multi_exec("DELETE FROM sfile WHERE x=%B", &repo);
  }
  while( db_step(&q)==SQLITE_ROW ){
    if( allFlag ){
      unlink(db_column_text(&q, 0));
    }else{
................................................................................
  blob_init(&text, zInit, -1);
  blob_append(&text,
    "\n"
    "# Enter comments on this check-in.  Lines beginning with # are ignored.\n"
    "# The check-in comment follows wiki formatting rules.\n"
    "#\n", -1
  );
  blob_appendf(&text, "# user: %s\n", g.zLogin);
  if( zBranch && zBranch[0] ){
    blob_appendf(&text, "# tags: %s\n#\n", zBranch);
  }else{
    char *zTags = info_tags_of_checkin(parent_rid, 1);
    if( zTags )  blob_appendf(&text, "# tags: %z\n#\n", zTags);
  }
  if( g.markPrivate ){
................................................................................
  if( zEditor==0 ){
    zEditor = getenv("VISUAL");
  }
  if( zEditor==0 ){
    zEditor = getenv("EDITOR");
  }
  if( zEditor==0 ){
    blob_append(&text,
       "#\n"
       "# Since no default text editor is set using EDITOR or VISUAL\n"
       "# environment variables or the \"fossil set editor\" command,\n"
       "# and because no check-in comment was specified using the \"-m\"\n"
       "# or \"-M\" command-line options, you will need to enter the\n"
       "# check-in comment below.  Type \".\" on a line by itself when\n"
       "# you are done:\n", -1);
    zFile = mprintf("-");
  }else{



    zFile = db_text(0, "SELECT '%qci-comment-' || hex(randomblob(6)) || '.txt'",
                    g.zLocalRoot);
  }
#if defined(_WIN32)
  blob_add_cr(&text);
#endif
  blob_write_to_file(&text, zFile);
  if( zEditor ){
    zCmd = mprintf("%s \"%s\"", zEditor, zFile);
    printf("%s\n", zCmd);
    if( fossil_system(zCmd) ){
      fossil_panic("editor aborted");
    }
    blob_reset(&text);
    blob_read_from_file(&text, zFile);
  }else{
    char zIn[300];
    blob_reset(&text);
    while( fgets(zIn, sizeof(zIn), stdin)!=0 ){
      if( zIn[0]=='.' && (zIn[1]==0 || zIn[1]=='\r' || zIn[1]=='\n') ) break;
      blob_append(&text, zIn, -1);
    }
  }
  blob_remove_cr(&text);
  unlink(zFile);
  free(zFile);
  blob_zero(pComment);
  while( blob_line(&text, &line) ){
    int i, n;
    char *z;
................................................................................
      g.aCommitFile[ii-2] = iId;
      blob_reset(&b);
    }
    g.aCommitFile[ii-2] = 0;
  }
}



















/*
** Make sure the current check-in with timestamp zDate is younger than its
** ancestor identified rid and zUuid.  Throw a fatal error if not.
*/
static void checkin_verify_younger(
  int rid,              /* The record ID of the ancestor */
  const char *zUuid,    /* The artifact ID of the ancestor */
................................................................................

/*
** zDate should be a valid date string.  Convert this string into the
** format YYYY-MM-DDTHH:MM:SS.  If the string is not a valid date, 
** print a fatal error and quit.
*/
char *date_in_standard_format(const char *zInputDate){
  char *zDate;
  zDate = db_text(0, "SELECT strftime('%%Y-%%m-%%dT%%H:%%M:%%f',%Q)",
                  zInputDate);
  if( zDate[0]==0 ){
    fossil_fatal(
      "unrecognized date format (%s): use \"YYYY-MM-DD HH:MM:SS.SSS\"",
      zInputDate
    );
  }
  return zDate;
}

/*
** Create a manifest.
*/
static void create_manifest(
................................................................................
  int vid,                    /* blob-id of the parent manifest */
  int verifyDate,             /* Verify that child is younger */
  Blob *pCksum,               /* Repository checksum.  May be 0 */
  const char *zDateOvrd,      /* Date override.  If 0 then use 'now' */
  const char *zUserOvrd,      /* User override.  If 0 then use g.zLogin */
  const char *zBranch,        /* Branch name.  May be 0 */
  const char *zBgColor,       /* Background color.  May be 0 */
  const char *zTag,           /* Tag to apply to this check-in */
  int *pnFBcard               /* Number of generated B- and F-cards */
){
  char *zDate;                /* Date of the check-in */
  char *zParentUuid;          /* UUID of parent check-in */
  Blob filename;              /* A single filename */
  int nBasename;              /* Size of base filename */
  Stmt q;                     /* Query of files changed */
................................................................................
    pFile = 0;
  }
  blob_appendf(pOut, "C %F\n", blob_str(pComment));
  zDate = date_in_standard_format(zDateOvrd ? zDateOvrd : "now");
  blob_appendf(pOut, "D %s\n", zDate);
  zDate[10] = ' ';
  db_prepare(&q,
    "SELECT pathname, uuid, origname, blob.rid, isexe,"
    "       file_is_selected(vfile.id)"
    "  FROM vfile JOIN blob ON vfile.mrid=blob.rid"
    " WHERE (NOT deleted OR NOT file_is_selected(vfile.id))"
    "   AND vfile.vid=%d"
    " ORDER BY 1", vid);
  blob_zero(&filename);
  blob_appendf(&filename, "%s", g.zLocalRoot);
  nBasename = blob_size(&filename);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zOrig = db_column_text(&q, 2);
    int frid = db_column_int(&q, 3);
    int isexe = db_column_int(&q, 4);
    int isSelected = db_column_int(&q, 5);
    const char *zPerm;
    int cmp;

#if !defined(_WIN32)
    /* For unix, extract the "executable" permission bit directly from
    ** the filesystem.  On windows, the "executable" bit is retained
    ** unchanged from the original. 
    */
    blob_resize(&filename, nBasename);
    blob_append(&filename, zName, -1);
    isexe = file_isexe(blob_str(&filename));
#endif
    if( isexe ){
      zPerm = " x";
    }else{
      zPerm = "";
    }
    if( !g.markPrivate ) content_make_public(frid);
    while( pFile && fossil_strcmp(pFile->zName,zName)<0 ){
      blob_appendf(pOut, "F %F\n", pFile->zName);
      pFile = manifest_file_next(pBaseline, 0);
      nFBcard++;
    }
    cmp = 1;
    if( pFile==0
      || (cmp = fossil_strcmp(pFile->zName,zName))!=0
      || fossil_strcmp(pFile->zUuid, zUuid)!=0
    ){
      if( zOrig && !isSelected ){ zName = zOrig; zOrig = 0; }
      if( zOrig==0 || fossil_strcmp(zOrig,zName)==0 ){
        blob_appendf(pOut, "F %F %s%s\n", zName, zUuid, zPerm);
      }else{
        if( zPerm[0]==0 ){ zPerm = " w"; }
        blob_appendf(pOut, "F %F %s%s %F\n", zName, zUuid, zPerm, zOrig);
      }
      nFBcard++;
    }
................................................................................
  }
  db_finalize(&q2);
  free(zDate);

  blob_appendf(pOut, "\n");
  if( pCksum ) blob_appendf(pOut, "R %b\n", pCksum);
  if( zBranch && zBranch[0] ){
    /* Set tags for the new branch */
    if( zBgColor && zBgColor[0] ){
      blob_appendf(pOut, "T *bgcolor * %F\n", zBgColor);
    }
    blob_appendf(pOut, "T *branch * %F\n", zBranch);
    blob_appendf(pOut, "T *sym-%F *\n", zBranch);
  }
  if( g.markPrivate ){
    /* If this manifest is private, mark it as such */
    blob_appendf(pOut, "T +private *\n");
  }
  if( zTag && zTag[0] ){
    /* Add a symbolic tag to this check-in */
    blob_appendf(pOut, "T +sym-%F *\n", zTag);
  }
  if( zBranch && zBranch[0] ){
    /* For a new branch, cancel all prior propagating tags */
    Stmt q;
    db_prepare(&q,
        "SELECT tagname FROM tagxref, tag"
        " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
        "   AND tagtype==2 AND tagname GLOB 'sym-*'"
        "   AND tagname!='sym-'||%Q"
        " ORDER BY tagname",
        vid, zBranch);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zTag = db_column_text(&q, 0);
      blob_appendf(pOut, "T -%F *\n", zTag);
    }
................................................................................
  }  
  blob_appendf(pOut, "U %F\n", zUserOvrd ? zUserOvrd : g.zLogin);
  md5sum_blob(pOut, &mcksum);
  blob_appendf(pOut, "Z %b\n", &mcksum);
  if( pnFBcard ) *pnFBcard = nFBcard;
}

/*
** Issue a warning and give the user an opportunity to abandon out
** if a \r\n line ending is seen in a text file.
*/
static void cr_warning(const Blob *p, const char *zFilename){
  int nCrNl = 0;          /* Number of \r\n line endings seen */
  const unsigned char *z; /* File text */
  int n;                  /* Size of the file in bytes */
  int lastNl = 0;         /* Characters since last \n */
  int i;                  /* Loop counter */
  char *zMsg;             /* Warning message */
  Blob fname;             /* Relative pathname of the file */
  Blob ans;               /* Answer to continue prompt */
  static int allOk = 0;   /* Set to true to disable this routine */

  if( allOk ) return;
  z = (unsigned char*)blob_buffer(p);
  n = blob_size(p);
  for(i=0; i<n-1; i++){
    unsigned char c = z[i];
    if( c==0 ) return;   /* It's binary */
    if( c=='\n' ){
      if( i>0 && z[i-1]=='\r' ){
        nCrNl++;
        if( i>10000 ) break;
      }
      lastNl = 0;
    }else{
      lastNl++;
      if( lastNl>1000 ) return;   /* Binary if any line longer than 1000 */
    }
  }
  if( nCrNl ){
    char c;
    file_relative_name(zFilename, &fname);
    blob_zero(&ans);
    zMsg = mprintf(
         "%s contains CR/NL line endings; commit anyhow (yes/no/all)?", 
         blob_str(&fname));
    prompt_user(zMsg, &ans);
    fossil_free(zMsg);
    c = blob_str(&ans)[0];
    if( c=='a' ){
      allOk = 1;
    }else if( c!='y' ){
      fossil_fatal("Abandoning commit due to CR+NL line endings in %s",
                   blob_str(&fname));
    }
    blob_reset(&ans);
    blob_reset(&fname);
  }
}

/*
** COMMAND: ci
** COMMAND: commit
**
** Usage: %fossil commit ?OPTIONS? ?FILE...?
**
................................................................................
**
** A check-in is not permitted to fork unless the --force or -f
** option appears.  A check-in is not allowed against a closed check-in.
**
** The --private option creates a private check-in that is never synced.
** Children of private check-ins are automatically private.
**
** the --tag option applies the symbolic tag name to the check-in.
**
** Options:
**
**    --comment|-m COMMENT-TEXT
**    --message-file|-M COMMENT-FILE
**    --branch NEW-BRANCH-NAME
**    --bgcolor COLOR
**    --nosign
**    --force|-f
**    --private
**    --baseline
**    --delta
**    --tag TAG-NAME
**    
*/
void commit_cmd(void){
  int hasChanges;        /* True if unsaved changes exist */
  int vid;               /* blob-id of parent version */
  int nrid;              /* blob-id of a modified file */
  int nvid;              /* Blob-id of the new check-in */
................................................................................
  int outputManifest;    /* True to output "manifest" and "manifest.uuid" */
  int testRun;           /* True for a test run.  Debugging only */
  const char *zBranch;   /* Create a new branch with this name */
  const char *zBgColor;  /* Set background color when branching */
  const char *zDateOvrd; /* Override date string */
  const char *zUserOvrd; /* Override user name */
  const char *zComFile;  /* Read commit message from this file */
  const char *zTag;      /* Symbolic tag to apply to this check-in */
  Blob manifest;         /* Manifest in baseline form */
  Blob muuid;            /* Manifest uuid */
  Blob cksum1, cksum2;   /* Before and after commit checksums */
  Blob cksum1b;          /* Checksum recorded in the manifest */
  int szD;               /* Size of the delta manifest */
  int szB;               /* Size of the baseline manifest */
 
................................................................................
    fossil_fatal("cannot use --delta and --baseline together");
  }
  testRun = find_option("test",0,0)!=0;
  zComment = find_option("comment","m",1);
  forceFlag = find_option("force", "f", 0)!=0;
  zBranch = find_option("branch","b",1);
  zBgColor = find_option("bgcolor",0,1);
  zTag = find_option("tag",0,1);
  zComFile = find_option("message-file", "M", 1);
  if( find_option("private",0,0) ){
    g.markPrivate = 1;
    if( zBranch==0 ) zBranch = "private";
    if( zBgColor==0 ) zBgColor = "#fec084";  /* Orange */
  }
  zDateOvrd = find_option("date-override",0,1);
................................................................................
    g.markPrivate = 1;
  }

  /*
  ** Autosync if autosync is enabled and this is not a private check-in.
  */
  if( !g.markPrivate ){
    if( autosync(AUTOSYNC_PULL) ){
      Blob ans;
      blob_zero(&ans);
      prompt_user("continue in spite of sync failure (y/N)? ", &ans);
      if( blob_str(&ans)[0]!='y' ){
        fossil_exit(1);
      }
    }
  }

  /* Require confirmation to continue with the check-in if there is
  ** clock skew
  */
  if( g.clockSkewSeen ){
    Blob ans;
................................................................................
  ** been modified, bail out now.
  */
  if( g.aCommitFile ){
    Blob unmodified;
    memset(&unmodified, 0, sizeof(Blob));
    blob_init(&unmodified, 0, 0);
    db_blob(&unmodified, 
      "SELECT pathname FROM vfile"
      " WHERE chnged = 0 AND origname IS NULL AND file_is_selected(id)"
    );
    if( strlen(blob_str(&unmodified)) ){
      fossil_fatal("file %s has not changed", blob_str(&unmodified));
    }
  }

  /*
  ** Do not allow a commit that will cause a fork unless the --force flag
  ** is used or unless this is a private check-in.
  */
................................................................................
  }

  /* Step 1: Insert records for all modified files into the blob 
  ** table. If there were arguments passed to this command, only
  ** the identified fils are inserted (if they have been modified).
  */
  db_prepare(&q,
    "SELECT id, %Q || pathname, mrid, %s FROM vfile "
    "WHERE chnged==1 AND NOT deleted AND file_is_selected(id)",
    g.zLocalRoot, glob_expr("pathname", db_get("crnl-glob",""))
  );
  while( db_step(&q)==SQLITE_ROW ){
    int id, rid;
    const char *zFullname;
    Blob content;
    int crnlOk;

    id = db_column_int(&q, 0);
    zFullname = db_column_text(&q, 1);
    rid = db_column_int(&q, 2);
    crnlOk = db_column_int(&q, 3);

    blob_zero(&content);
    blob_read_from_file(&content, zFullname);
    if( !crnlOk ) cr_warning(&content, zFullname);
    nrid = content_put(&content);
    blob_reset(&content);
    if( rid>0 ){
      content_deltify(rid, nrid, 0);
    }
    db_multi_exec("UPDATE vfile SET mrid=%d, rid=%d WHERE id=%d", nrid,nrid,id);
    db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
  }
................................................................................
    blob_append(&comment, "(no comment)", -1);
  }
  if( forceDelta ){
    blob_zero(&manifest);
  }else{
    create_manifest(&manifest, 0, 0, &comment, vid,
                    !forceFlag, useCksum ? &cksum1 : 0,
                    zDateOvrd, zUserOvrd, zBranch, zBgColor, zTag, &szB);
  }

  /* See if a delta-manifest would be more appropriate */
  if( !forceBaseline ){
    const char *zBaselineUuid;
    Manifest *pParent;
    Manifest *pBaseline;
................................................................................
      zBaselineUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
      pBaseline = pParent;
    }
    if( pBaseline ){
      Blob delta;
      create_manifest(&delta, zBaselineUuid, pBaseline, &comment, vid,
                      !forceFlag, useCksum ? &cksum1 : 0,
                      zDateOvrd, zUserOvrd, zBranch, zBgColor, zTag, &szD);
      /*
      ** At this point, two manifests have been constructed, either of
      ** which would work for this checkin.  The first manifest (held
      ** in the "manifest" variable) is a baseline manifest and the second
      ** (held in variable named "delta") is a delta manifest.  The
      ** question now is: which manifest should we use?
      **
................................................................................
  if( outputManifest ){
    zManifestFile = mprintf("%smanifest", g.zLocalRoot);
    blob_write_to_file(&manifest, zManifestFile);
    blob_reset(&manifest);
    blob_read_from_file(&manifest, zManifestFile);
    free(zManifestFile);
  }
  nvid = content_put(&manifest);
  if( nvid==0 ){
    fossil_panic("trouble committing manifest: %s", g.zErrMsg);
  }
  db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nvid);
  manifest_crosslink(nvid, &manifest);
  assert( blob_is_reset(&manifest) );
  content_deltify(vid, nvid, 0);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", nvid);
  printf("New_Version: %s\n", zUuid);
  if( outputManifest ){
    zManifestFile = mprintf("%smanifest.uuid", g.zLocalRoot);
    blob_zero(&muuid);
    blob_appendf(&muuid, "%s\n", zUuid);
................................................................................
  if( useCksum ){
    /* Verify that the repository checksum matches the expected checksum
    ** calculated before the checkin started (and stored as the R record
    ** of the manifest file).
    */
    vfile_aggregate_checksum_repository(nvid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      vfile_compare_repository_to_disk(nvid);
      fossil_fatal("working checkout does not match what would have ended "
                   "up in the repository:  %b versus %b",
                   &cksum1, &cksum2);
    }
  
    /* Verify that the manifest checksum matches the expected checksum */
    vfile_aggregate_checksum_manifest(nvid, &cksum2, &cksum1b);
    if( blob_compare(&cksum1, &cksum1b) ){
      fossil_fatal("manifest checksum self-test failed: "
                   "%b versus %b", &cksum1, &cksum1b);
    }
    if( blob_compare(&cksum1, &cksum2) ){
      fossil_fatal(
         "working checkout does not match manifest after commit: "
         "%b versus %b", &cksum1, &cksum2);
    }
  
    /* Verify that the commit did not modify any disk images. */
    vfile_aggregate_checksum_disk(nvid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      fossil_fatal("working checkout before and after commit does not match");
    }
  }

  /* Clear the undo/redo stack */
  undo_reset();

  /* Commit */

**     2:   There is no existing checkout
*/
int unsaved_changes(void){
  int vid;
  db_must_be_within_tree();
  vid = db_lget_int("checkout",0);
  if( vid==0 ) return 2;
  vfile_check_signature(vid, 1);
  return db_exists("SELECT 1 FROM vfile WHERE chnged"
                   " OR coalesce(origname!=pathname,0)");
}

/*
** Undo the current check-out.  Unlink all files from the disk.
** Clear the VFILE table.
................................................................................
  Blob cksum1, cksum1b, cksum2;
  
  db_must_be_within_tree();
  db_begin_transaction();
  forceFlag = find_option("force","f",0)!=0;
  keepFlag = find_option("keep",0,0)!=0;
  latestFlag = find_option("latest",0,0)!=0;
  promptFlag = find_option("prompt",0,0)!=0;  /* Prompt user before overwrite */
  if( (latestFlag!=0 && g.argc!=2) || (latestFlag==0 && g.argc!=3) ){
     usage("VERSION|--latest ?--force? ?--keep?");
  }
  if( !forceFlag && unsaved_changes()==1 ){
    fossil_fatal("there are unsaved changes in the current checkout");
  }
  if( forceFlag ){
................................................................................
    vfile_to_disk(vid, 0, 1, promptFlag);
  }
  checkout_set_all_exe(vid);
  manifest_to_disk(vid);
  db_lset_int("checkout", vid);
  undo_reset();
  db_multi_exec("DELETE FROM vmerge");
  if( !keepFlag ){
    vfile_aggregate_checksum_manifest(vid, &cksum1, &cksum1b);
    vfile_aggregate_checksum_disk(vid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      printf("WARNING: manifest checksum does not agree with disk\n");
    }
    if( blob_size(&cksum1b) && blob_compare(&cksum1, &cksum1b) ){
      printf("WARNING: manifest checksum does not agree with manifest\n");
................................................................................
  }
  db_end_transaction(0);
}

/*
** Unlink the local database file
*/
void unlink_local_database(void){
  static const char *azFile[] = {
     "%s_FOSSIL_",
     "%s_FOSSIL_-journal",
     "%s_FOSSIL_-wal",
     "%s_FOSSIL_-shm",
     "%s.fos",
     "%s.fos-journal",
     "%s.fos-wal",
     "%s.fos-shm",
  };
  int i;
  for(i=0; i<sizeof(azFile)/sizeof(azFile[0]); i++){
    char *z = mprintf(azFile[i], g.zLocalRoot);
    unlink(z);
    free(z);
  }
}

/*
** COMMAND: close
**
** Usage: %fossil close ?-f|--force?
................................................................................
*/
void close_cmd(void){
  int forceFlag = find_option("force","f",0)!=0;
  db_must_be_within_tree();
  if( !forceFlag && unsaved_changes()==1 ){
    fossil_fatal("there are unsaved changes in the current checkout");
  }

  db_close();
  unlink_local_database();
}

**     2:   There is no existing checkout
*/
int unsaved_changes(void){
  int vid;
  db_must_be_within_tree();
  vid = db_lget_int("checkout",0);
  if( vid==0 ) return 2;
  vfile_check_signature(vid, 1, 0);
  return db_exists("SELECT 1 FROM vfile WHERE chnged"
                   " OR coalesce(origname!=pathname,0)");
}

/*
** Undo the current check-out.  Unlink all files from the disk.
** Clear the VFILE table.
................................................................................
  Blob cksum1, cksum1b, cksum2;
  
  db_must_be_within_tree();
  db_begin_transaction();
  forceFlag = find_option("force","f",0)!=0;
  keepFlag = find_option("keep",0,0)!=0;
  latestFlag = find_option("latest",0,0)!=0;
  promptFlag = find_option("prompt",0,0)!=0 || forceFlag==0;
  if( (latestFlag!=0 && g.argc!=2) || (latestFlag==0 && g.argc!=3) ){
     usage("VERSION|--latest ?--force? ?--keep?");
  }
  if( !forceFlag && unsaved_changes()==1 ){
    fossil_fatal("there are unsaved changes in the current checkout");
  }
  if( forceFlag ){
................................................................................
    vfile_to_disk(vid, 0, 1, promptFlag);
  }
  checkout_set_all_exe(vid);
  manifest_to_disk(vid);
  db_lset_int("checkout", vid);
  undo_reset();
  db_multi_exec("DELETE FROM vmerge");
  if( !keepFlag && db_get_boolean("repo-cksum",1) ){
    vfile_aggregate_checksum_manifest(vid, &cksum1, &cksum1b);
    vfile_aggregate_checksum_disk(vid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      printf("WARNING: manifest checksum does not agree with disk\n");
    }
    if( blob_size(&cksum1b) && blob_compare(&cksum1, &cksum1b) ){
      printf("WARNING: manifest checksum does not agree with manifest\n");
................................................................................
  }
  db_end_transaction(0);
}

/*
** Unlink the local database file
*/
static void unlink_local_database(int manifestOnly){
  const char *zReserved;
  int i;
  for(i=0; (zReserved = fossil_reserved_name(i))!=0; i++){
    if( manifestOnly==0 || zReserved[0]=='m' ){
      char *z;
      z = mprintf("%s%s", g.zLocalRoot, zReserved);
      unlink(z);
      free(z);
    }






  }
}

/*
** COMMAND: close
**
** Usage: %fossil close ?-f|--force?
................................................................................
*/
void close_cmd(void){
  int forceFlag = find_option("force","f",0)!=0;
  db_must_be_within_tree();
  if( !forceFlag && unsaved_changes()==1 ){
    fossil_fatal("there are unsaved changes in the current checkout");
  }
  unlink_local_database(1);
  db_close(1);
  unlink_local_database(0);
}

**
** By default, your current login name is used to create the default
** admin user. This can be overridden using the -A|--admin-user
** parameter.
**
** Options:
**
**    --admin-user|-A USERNAME

**
*/
void clone_cmd(void){
  char *zPassword;
  const char *zDefaultUser;   /* Optional name of the default user */




  url_proxy_options();
  if( g.argc < 4 ){
    usage("?OPTIONS? FILE-OR-URL NEW-REPOSITORY");
  }
  db_open_config(0);
  if( file_size(g.argv[3])>0 ){
    fossil_panic("file already exists: %s", g.argv[3]);
................................................................................
  }

  zDefaultUser = find_option("admin-user","A",1);

  url_parse(g.argv[2]);
  if( g.urlIsFile ){
    file_copy(g.urlName, g.argv[3]);
    db_close();
    db_open_repository(g.argv[3]);
    db_record_repository_filename(g.argv[3]);
    db_multi_exec(
      "REPLACE INTO config(name,value)"
      " VALUES('server-code', lower(hex(randomblob(20))));"
      "REPLACE INTO config(name,value)"
      " VALUES('last-sync-url', '%q');",
      g.urlCanonical
    );
    db_multi_exec(
       "DELETE FROM blob WHERE rid IN private;"
       "DELETE FROM delta wHERE rid IN private;"
       "DELETE FROM private;"
    );
................................................................................
    db_record_repository_filename(g.argv[3]);
    db_initial_setup(0, zDefaultUser, 0);
    user_select();
    db_set("content-schema", CONTENT_SCHEMA, 0);
    db_set("aux-schema", AUX_SCHEMA, 0);
    db_set("last-sync-url", g.argv[2], 0);
    db_multi_exec(
      "REPLACE INTO config(name,value)"
      " VALUES('server-code', lower(hex(randomblob(20))));"
    );
    url_enable_proxy(0);

    g.xlinkClusterOnly = 1;
    client_sync(0,0,1,CONFIGSET_ALL,0);
    g.xlinkClusterOnly = 0;
    verify_cancel();
    db_end_transaction(0);
    db_close();




    db_open_repository(g.argv[3]);
  }
  db_begin_transaction();
  printf("Rebuilding repository meta-data...\n");
  rebuild_db(0, 1);
  printf("project-id: %s\n", db_get("project-code", 0));
  printf("server-id:  %s\n", db_get("server-code", 0));
  zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
  printf("admin-user: %s (password is \"%s\")\n", g.zLogin, zPassword);
  db_end_transaction(0);
}

**
** By default, your current login name is used to create the default
** admin user. This can be overridden using the -A|--admin-user
** parameter.
**
** Options:
**
**    --admin-user|-A USERNAME    Make USERNAME the administrator
**    --private                   Also clone private branches 
**
*/
void clone_cmd(void){
  char *zPassword;
  const char *zDefaultUser;   /* Optional name of the default user */
  int nErr = 0;
  int bPrivate;               /* Also clone private branches */

  bPrivate = find_option("private",0,0)!=0;
  url_proxy_options();
  if( g.argc < 4 ){
    usage("?OPTIONS? FILE-OR-URL NEW-REPOSITORY");
  }
  db_open_config(0);
  if( file_size(g.argv[3])>0 ){
    fossil_panic("file already exists: %s", g.argv[3]);
................................................................................
  }

  zDefaultUser = find_option("admin-user","A",1);

  url_parse(g.argv[2]);
  if( g.urlIsFile ){
    file_copy(g.urlName, g.argv[3]);
    db_close(1);
    db_open_repository(g.argv[3]);
    db_record_repository_filename(g.argv[3]);
    db_multi_exec(
      "REPLACE INTO config(name,value,mtime)"
      " VALUES('server-code', lower(hex(randomblob(20))),now());"
      "REPLACE INTO config(name,value,mtime)"
      " VALUES('last-sync-url', '%q',now());",
      g.urlCanonical
    );
    db_multi_exec(
       "DELETE FROM blob WHERE rid IN private;"
       "DELETE FROM delta wHERE rid IN private;"
       "DELETE FROM private;"
    );
................................................................................
    db_record_repository_filename(g.argv[3]);
    db_initial_setup(0, zDefaultUser, 0);
    user_select();
    db_set("content-schema", CONTENT_SCHEMA, 0);
    db_set("aux-schema", AUX_SCHEMA, 0);
    db_set("last-sync-url", g.argv[2], 0);
    db_multi_exec(
      "REPLACE INTO config(name,value,mtime)"
      " VALUES('server-code', lower(hex(randomblob(20))), now());"
    );
    url_enable_proxy(0);
    url_get_password_if_needed();
    g.xlinkClusterOnly = 1;
    nErr = client_sync(0,0,1,bPrivate,CONFIGSET_ALL,0);
    g.xlinkClusterOnly = 0;
    verify_cancel();
    db_end_transaction(0);
    db_close(1);
    if( nErr ){
      unlink(g.argv[3]);
      fossil_fatal("server returned an error - clone aborted");
    }
    db_open_repository(g.argv[3]);
  }
  db_begin_transaction();
  printf("Rebuilding repository meta-data...\n");
  rebuild_db(0, 1, 0);
  printf("project-id: %s\n", db_get("project-code", 0));
  printf("server-id:  %s\n", db_get("server-code", 0));
  zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
  printf("admin-user: %s (password is \"%s\")\n", g.zLogin, zPassword);
  db_end_transaction(0);
}

/*
** Typedef for a 64-bit integer
*/
typedef sqlite3_int64 i64;
typedef sqlite3_uint64 u64;

/*
** Unsigned character type
*/
typedef unsigned char u8;


/* In the timeline, check-in messages are truncated at the first space
** that is more than MX_CKIN_MSG from the beginning, or at the first
** paragraph break that is more than MN_CKIN_MSG from the beginning.
*/
#define MN_CKIN_MSG   100
#define MX_CKIN_MSG   300
................................................................................
# define FOSSIL_INT_TO_PTR(X)  ((void*)&((char*)0)[X])
# define FOSSIL_PTR_TO_INT(X)  ((int)(((char*)X)-(char*)0))
#else                          /* Generates a warning - but it always works */
# define FOSSIL_INT_TO_PTR(X)  ((void*)(X))
# define FOSSIL_PTR_TO_INT(X)  ((int)(X))
#endif


/* Unset the following to disable internationalization code. */
#ifndef FOSSIL_I18N
# define FOSSIL_I18N 1
#endif

#if FOSSIL_I18N
# include <locale.h>
# include <langinfo.h>
#endif
#ifndef CODESET
# undef FOSSIL_I18N
# define FOSSIL_I18N 0
#endif

#endif /* _RC_COMPILE_ */

/*
** Typedef for a 64-bit integer
*/
typedef sqlite3_int64 i64;
typedef sqlite3_uint64 u64;

/*
** 8-bit types
*/
typedef unsigned char u8;
typedef signed char i8;

/* In the timeline, check-in messages are truncated at the first space
** that is more than MX_CKIN_MSG from the beginning, or at the first
** paragraph break that is more than MN_CKIN_MSG from the beginning.
*/
#define MN_CKIN_MSG   100
#define MX_CKIN_MSG   300
................................................................................
# define FOSSIL_INT_TO_PTR(X)  ((void*)&((char*)0)[X])
# define FOSSIL_PTR_TO_INT(X)  ((int)(((char*)X)-(char*)0))
#else                          /* Generates a warning - but it always works */
# define FOSSIL_INT_TO_PTR(X)  ((void*)(X))
# define FOSSIL_PTR_TO_INT(X)  ((int)(X))
#endif
















#endif /* _RC_COMPILE_ */

/*
** Copyright (c) 2008 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to manage repository configurations.

** By "responsitory configure" we mean the local state of a repository
** distinct from the versioned files.
*/
#include "config.h"
#include "configure.h"
#include <assert.h>

#if INTERFACE
/*
** Configuration transfers occur in groups.  These are the allowed
** groupings:
*/
#define CONFIGSET_SKIN   0x000001     /* WWW interface appearance */
#define CONFIGSET_TKT    0x000002     /* Ticket configuration */
#define CONFIGSET_PROJ   0x000004     /* Project name */
#define CONFIGSET_SHUN   0x000008     /* Shun settings */
#define CONFIGSET_USER   0x000010     /* The USER table */
#define CONFIGSET_ADDR   0x000020     /* The CONCEALED table */

#define CONFIGSET_ALL    0xffffff     /* Everything */




#endif /* INTERFACE */

/*
** Names of the configuration sets
*/
static struct {
  const char *zName;   /* Name of the configuration set */
  int groupMask;       /* Mask for that configuration set */
  const char *zHelp;   /* What it does */
} aGroupName[] = {
  { "email",        CONFIGSET_ADDR,  "Concealed email addresses in tickets" },
  { "project",      CONFIGSET_PROJ,  "Project name and description"         },
  { "skin",         CONFIGSET_SKIN,  "Web interface apparance settings"     },
  { "shun",         CONFIGSET_SHUN,  "List of shunned artifacts"            },
  { "ticket",       CONFIGSET_TKT,   "Ticket setup",                        },
  { "user",         CONFIGSET_USER,  "Users and privilege settings"         },
  { "all",          CONFIGSET_ALL,   "All of the above"                     },
};


/*
** The following is a list of settings that we are willing to
** transfer.  
**
................................................................................
  { "header",                 CONFIGSET_SKIN },
  { "footer",                 CONFIGSET_SKIN },
  { "logo-mimetype",          CONFIGSET_SKIN },
  { "logo-image",             CONFIGSET_SKIN },
  { "project-name",           CONFIGSET_PROJ },
  { "project-description",    CONFIGSET_PROJ },
  { "manifest",               CONFIGSET_PROJ },


  { "index-page",             CONFIGSET_SKIN },
  { "timeline-block-markup",  CONFIGSET_SKIN },
  { "timeline-max-comment",   CONFIGSET_SKIN },
  { "ticket-table",           CONFIGSET_TKT  },
  { "ticket-common",          CONFIGSET_TKT  },
  { "ticket-newpage",         CONFIGSET_TKT  },
  { "ticket-viewpage",        CONFIGSET_TKT  },
................................................................................
** Return name of first configuration property matching the given mask.
*/
const char *configure_first_name(int iMask){
  iConfig = 0;
  return configure_next_name(iMask);
}
const char *configure_next_name(int iMask){

  while( iConfig<count(aConfig) ){
    if( aConfig[iConfig].groupMask & iMask ){
      return aConfig[iConfig++].zName;
    }else{
      iConfig++;













    }
  }
  return 0;
}

/*
** Return the mask for the named configuration parameter if it can be
** safely exported.  Return 0 if the parameter is not safe to export.





*/
int configure_is_exportable(const char *zName){
  int i;





  for(i=0; i<count(aConfig); i++){
    if( strcmp(zName, aConfig[i].zName)==0 ){
      int m = aConfig[i].groupMask;
      if( !g.okAdmin ){
        m &= ~CONFIGSET_USER;
      }
      if( !g.okRdAddr ){
        m &= ~CONFIGSET_ADDR;
      }
................................................................................
** zName is one of the special configuration names that refers to an entire
** table rather than a single entry in CONFIG.  Special names are "@reportfmt"
** and "@shun" and "@user".  This routine writes SQL text into pOut that when
** evaluated will populate the corresponding table with data.
*/
void configure_render_special_name(const char *zName, Blob *pOut){
  Stmt q;
  if( strcmp(zName, "@shun")==0 ){
    db_prepare(&q, "SELECT uuid FROM shun");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pOut, "INSERT OR IGNORE INTO shun VALUES('%s');\n", 
        db_column_text(&q, 0)
      );
    }
    db_finalize(&q);
  }else if( strcmp(zName, "@reportfmt")==0 ){
    db_prepare(&q, "SELECT title, cols, sqlcode FROM reportfmt");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pOut, "INSERT INTO _xfer_reportfmt(title,cols,sqlcode)"
                         " VALUES(%Q,%Q,%Q);\n", 
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2)
      );
    }
    db_finalize(&q);
  }else if( strcmp(zName, "@user")==0 ){
    db_prepare(&q, 
        "SELECT login, CASE WHEN length(pw)==40 THEN pw END,"
        "       cap, info, quote(photo) FROM user");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pOut, "INSERT INTO _xfer_user(login,pw,cap,info,photo)"
                         " VALUES(%Q,%Q,%Q,%Q,%s);\n",
        db_column_text(&q, 0),
................................................................................
        db_column_text(&q, 1),
        db_column_text(&q, 2),
        db_column_text(&q, 3),
        db_column_text(&q, 4)
      );
    }
    db_finalize(&q);
  }else if( strcmp(zName, "@concealed")==0 ){
    db_prepare(&q, "SELECT hash, content FROM concealed");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pOut, "INSERT OR IGNORE INTO concealed(hash,content)"
                         " VALUES(%Q,%Q);\n",
        db_column_text(&q, 0),
        db_column_text(&q, 1)
      );
................................................................................
    db_finalize(&q);
  }
}

/*
** Two SQL functions:
**
**        flag_test(int)
**        flag_clear(int)
**
** The flag_test() function takes the integer valued argument and
** ANDs it against the static variable "flag_value" below.  The
** function returns TRUE or false depending on the result.  The
** flag_clear() function masks off the bits from "flag_value" that

** are given in the argument.
**
** These functions are used below in the WHEN clause of a trigger to
** get the trigger to fire exactly once.
*/
static int flag_value = 0xffff;
static void flag_test_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int m = sqlite3_value_int(argv[0]);
  sqlite3_result_int(context, (flag_value&m)!=0 );
}
static void flag_clear_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int m = sqlite3_value_int(argv[0]);
  flag_value &= ~m;
}

/*
** Create the temporary _xfer_reportfmt and _xfer_user tables that are
** necessary in order to evalute the SQL text generated by the
** configure_render_special_name() routine.
**
................................................................................
    @   cap TEXT,                       -- Capabilities of this user
    @   cookie TEXT,                    -- WWW login cookie
    @   ipaddr TEXT,                    -- IP address for which cookie is valid
    @   cexpire DATETIME,               -- Time when cookie expires
    @   info TEXT,                      -- contact information
    @   photo BLOB                      -- JPEG image of this user
    @ );
    @ INSERT INTO _xfer_reportfmt SELECT * FROM reportfmt;

    @ INSERT INTO _xfer_user SELECT * FROM user;

  ;
  db_multi_exec(zSQL1);
  
  /* When the replace flag is set, add triggers that run the first time
  ** that new data is seen.  The triggers run only once and delete all the
  ** existing data.
  */
  if( replaceFlag ){
    static const char zSQL2[] =
      @ CREATE TRIGGER _xfer_r1 BEFORE INSERT ON _xfer_reportfmt
      @ WHEN flag_test(1) BEGIN
      @   DELETE FROM _xfer_reportfmt;
      @   SELECT flag_clear(1);
      @ END;
      @ CREATE TRIGGER _xfer_r2 BEFORE INSERT ON _xfer_user
      @ WHEN flag_test(2) BEGIN
      @   DELETE FROM _xfer_user;
      @   SELECT flag_clear(2);
      @ END;
      @ CREATE TEMP TRIGGER _xfer_r3 BEFORE INSERT ON shun
      @ WHEN flag_test(4) BEGIN
      @   DELETE FROM shun;
      @   SELECT flag_clear(4);
      @ END;
    ;
    sqlite3_create_function(g.db, "flag_test", 1, SQLITE_UTF8, 0,
         flag_test_function, 0, 0);
    sqlite3_create_function(g.db, "flag_clear", 1, SQLITE_UTF8, 0,
         flag_clear_function, 0, 0);
    flag_value = 0xffff;
    db_multi_exec(zSQL2);
  }
}

/*
** After receiving configuration data, call this routine to transfer
** the results into the main database.
................................................................................
    @ DELETE FROM reportfmt;
    @ INSERT INTO reportfmt SELECT * FROM _xfer_reportfmt;
    @ DROP TABLE _xfer_user;
    @ DROP TABLE _xfer_reportfmt;
  ;
  db_multi_exec(zSQL);
}

/*

















































































































































































































































































































































** Identify a configuration group by name.  Return its mask.
** Throw an error if no match.
*/
static int find_area(const char *z){

  int i;
  int n = strlen(z);
  for(i=0; i<count(aGroupName); i++){
    if( strncmp(z, aGroupName[i].zName, n)==0 ){
      return aGroupName[i].groupMask;
    }
  }

  printf("Available configuration areas:\n");
  for(i=0; i<count(aGroupName); i++){
    printf("  %-10s %s\n", aGroupName[i].zName, aGroupName[i].zHelp);

  }
  fossil_fatal("no such configuration area: \"%s\"", z);

  return 0;
}

/*
** Write SQL text into file zFilename that will restore the configuration
** area identified by mask to its current state from any other state.
*/
static void export_config(
  int mask,                 /* Mask indicating which configuration to export */
  const char *zMask,        /* Name of the configuration */

  const char *zFilename     /* Write into this file */
){
  int i;
  Blob out;
  blob_zero(&out);
  blob_appendf(&out, 
    "-- The \"%s\" configuration exported from\n"
    "-- repository \"%s\"\n"
    "-- on %s\n",
    zMask, g.zRepositoryName,
    db_text(0, "SELECT datetime('now')")
  );
  for(i=0; i<count(aConfig); i++){
    if( (aConfig[i].groupMask & mask)!=0 ){
      const char *zName = aConfig[i].zName;
      if( zName[0]!='@' ){
        char *zValue = db_text(0, 
            "SELECT quote(value) FROM config WHERE name=%Q", zName);
        if( zValue ){
          blob_appendf(&out,"REPLACE INTO config VALUES(%Q,%s);\n", 
                       zName, zValue);
        }
        free(zValue);
      }else{
        configure_render_special_name(zName, &out);
      }
    }
  }
  blob_write_to_file(&out, zFilename);
  blob_reset(&out);
}


/*
** COMMAND: configuration
................................................................................
**         the current configuration.  Existing values take priority over
**         values read from FILENAME.
**
**    %fossil configuration pull AREA ?URL?
**
**         Pull and install the configuration from a different server
**         identified by URL.  If no URL is specified, then the default
**         server is used. 



**
**    %fossil configuration push AREA ?URL?
**
**         Push the local configuration into the remote server identified
**         by URL.  Admin privilege is required on the remote server for
**         this to work.


**
**    %fossil configuration reset AREA
**
**         Restore the configuration to the default.  AREA as above.
**
** WARNING: Do not import, merge, or pull configurations from an untrusted
** source.  The inbound configuration is not checked for safety and can
** introduce security vulnerabilities.

*/
void configuration_cmd(void){
  int n;
  const char *zMethod;
  if( g.argc<3 ){
    usage("export|import|merge|pull|reset ...");
  }
  db_find_and_open_repository(1);
  zMethod = g.argv[2];
  n = strlen(zMethod);
  if( strncmp(zMethod, "export", n)==0 ){
    int mask;


    if( g.argc!=5 ){
      usage("export AREA FILENAME");
    }
    mask = find_area(g.argv[3]);








    export_config(mask, g.argv[3], g.argv[4]);
  }else
  if( strncmp(zMethod, "import", n)==0 
       || strncmp(zMethod, "merge", n)==0 ){
    Blob in;

    if( g.argc!=4 ) usage(mprintf("%s FILENAME",zMethod));
    blob_read_from_file(&in, g.argv[3]);
    db_begin_transaction();
    configure_prepare_to_receive(zMethod[0]=='i');
    db_multi_exec("%s", blob_str(&in));
    configure_finalize_receive();



    db_end_transaction(0);
  }else
  if( strncmp(zMethod, "pull", n)==0 || strncmp(zMethod, "push", n)==0 ){



    int mask;
    const char *zServer;
    const char *zPw;






    url_proxy_options();
    if( g.argc!=4 && g.argc!=5 ){
      usage("pull AREA ?URL?");
    }
    mask = find_area(g.argv[3]);
    if( g.argc==5 ){
      zServer = g.argv[4];
      zPw = 0;
      g.dontKeepUrl = 1;
    }else{
      zServer = db_get("last-sync-url", 0);
      if( zServer==0 ){
................................................................................
      }
      zPw = unobscure(db_get("last-sync-pw", 0));
    }
    url_parse(zServer);
    if( g.urlPasswd==0 && zPw ) g.urlPasswd = mprintf("%s", zPw);
    user_select();
    url_enable_proxy("via proxy: ");


    if( strncmp(zMethod, "push", n)==0 ){


      client_sync(0,0,0,0,mask);
    }else{
      client_sync(0,0,0,mask,0);
    }
  }else
  if( strncmp(zMethod, "reset", n)==0 ){
    int mask, i;
    char *zBackup;
    if( g.argc!=4 ) usage("reset AREA");
    mask = find_area(g.argv[3]);
    zBackup = db_text(0, 
       "SELECT strftime('config-backup-%%Y%%m%%d%%H%%M%%f','now')");
    db_begin_transaction();
    export_config(mask, g.argv[3], zBackup);
    for(i=0; i<count(aConfig); i++){
      const char *zName = aConfig[i].zName;
      if( (aConfig[i].groupMask & mask)==0 ) continue;
      if( zName[0]!='@' ){
        db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
      }else if( strcmp(zName,"@user")==0 ){
        db_multi_exec("DELETE FROM user");
        db_create_default_users(0, 0);
      }else if( strcmp(zName,"@concealed")==0 ){
        db_multi_exec("DELETE FROM concealed");
      }else if( strcmp(zName,"@shun")==0 ){
        db_multi_exec("DELETE FROM shun");
      }else if( strcmp(zName,"@reportfmt")==0 ){
        db_multi_exec("DELETE FROM reportfmt");
      }
    }
    db_end_transaction(0);
    printf("Configuration reset to factory defaults.\n");
    printf("To recover, use:  %s %s import %s\n", 
            g.argv[0], g.argv[1], zBackup);
  }else
  {
    fossil_fatal("METHOD should be one of:"
                 " export import merge pull push reset");
  }
}

/*
** Copyright (c) 2008 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to manage repository configurations.
**
** By "responsitory configure" we mean the local state of a repository
** distinct from the versioned files.
*/
#include "config.h"
#include "configure.h"
#include <assert.h>

#if INTERFACE
/*
** Configuration transfers occur in groups.  These are the allowed
** groupings:
*/
#define CONFIGSET_SKIN      0x000001     /* WWW interface appearance */
#define CONFIGSET_TKT       0x000002     /* Ticket configuration */
#define CONFIGSET_PROJ      0x000004     /* Project name */
#define CONFIGSET_SHUN      0x000008     /* Shun settings */
#define CONFIGSET_USER      0x000010     /* The USER table */
#define CONFIGSET_ADDR      0x000020     /* The CONCEALED table */

#define CONFIGSET_ALL       0x0000ff     /* Everything */

#define CONFIGSET_OVERWRITE 0x100000     /* Causes overwrite instead of merge */
#define CONFIGSET_OLDFORMAT 0x200000     /* Use the legacy format */

#endif /* INTERFACE */

/*
** Names of the configuration sets
*/
static struct {
  const char *zName;   /* Name of the configuration set */
  int groupMask;       /* Mask for that configuration set */
  const char *zHelp;   /* What it does */
} aGroupName[] = {
  { "/email",        CONFIGSET_ADDR,  "Concealed email addresses in tickets" },
  { "/project",      CONFIGSET_PROJ,  "Project name and description"         },
  { "/skin",         CONFIGSET_SKIN,  "Web interface apparance settings"     },
  { "/shun",         CONFIGSET_SHUN,  "List of shunned artifacts"            },
  { "/ticket",       CONFIGSET_TKT,   "Ticket setup",                        },
  { "/user",         CONFIGSET_USER,  "Users and privilege settings"         },
  { "/all",          CONFIGSET_ALL,   "All of the above"                     },
};


/*
** The following is a list of settings that we are willing to
** transfer.  
**
................................................................................
  { "header",                 CONFIGSET_SKIN },
  { "footer",                 CONFIGSET_SKIN },
  { "logo-mimetype",          CONFIGSET_SKIN },
  { "logo-image",             CONFIGSET_SKIN },
  { "project-name",           CONFIGSET_PROJ },
  { "project-description",    CONFIGSET_PROJ },
  { "manifest",               CONFIGSET_PROJ },
  { "ignore-glob",            CONFIGSET_PROJ },
  { "crnl-glob",              CONFIGSET_PROJ },
  { "index-page",             CONFIGSET_SKIN },
  { "timeline-block-markup",  CONFIGSET_SKIN },
  { "timeline-max-comment",   CONFIGSET_SKIN },
  { "ticket-table",           CONFIGSET_TKT  },
  { "ticket-common",          CONFIGSET_TKT  },
  { "ticket-newpage",         CONFIGSET_TKT  },
  { "ticket-viewpage",        CONFIGSET_TKT  },
................................................................................
** Return name of first configuration property matching the given mask.
*/
const char *configure_first_name(int iMask){
  iConfig = 0;
  return configure_next_name(iMask);
}
const char *configure_next_name(int iMask){
  if( iMask & CONFIGSET_OLDFORMAT ){
    while( iConfig<count(aConfig) ){
      if( aConfig[iConfig].groupMask & iMask ){
        return aConfig[iConfig++].zName;
      }else{
        iConfig++;
      }
    }
  }else{
    if( iConfig==0 && (iMask & CONFIGSET_ALL)==CONFIGSET_ALL ){
      iConfig = count(aGroupName);
      return "/all";
    }
    while( iConfig<count(aGroupName)-1 ){
      if( aGroupName[iConfig].groupMask & iMask ){
        return aGroupName[iConfig++].zName;
      }else{
        iConfig++;
      }
    }
  }
  return 0;
}

/*
** Return the mask for the named configuration parameter if it can be
** safely exported.  Return 0 if the parameter is not safe to export.
**
** "Safe" in the previous paragraph means the permission is created to
** export the property.  In other words, the requesting side has presented
** login credentials and has sufficient capabilities to access the requested
** information.
*/
int configure_is_exportable(const char *zName){
  int i;
  int n = strlen(zName);
  if( n>2 && zName[0]=='\'' && zName[n-1]=='\'' ){
    zName++;
    n -= 2;
  }
  for(i=0; i<count(aConfig); i++){
    if( memcmp(zName, aConfig[i].zName, n)==0 && aConfig[i].zName[n]==0 ){
      int m = aConfig[i].groupMask;
      if( !g.okAdmin ){
        m &= ~CONFIGSET_USER;
      }
      if( !g.okRdAddr ){
        m &= ~CONFIGSET_ADDR;
      }
................................................................................
** zName is one of the special configuration names that refers to an entire
** table rather than a single entry in CONFIG.  Special names are "@reportfmt"
** and "@shun" and "@user".  This routine writes SQL text into pOut that when
** evaluated will populate the corresponding table with data.
*/
void configure_render_special_name(const char *zName, Blob *pOut){
  Stmt q;
  if( fossil_strcmp(zName, "@shun")==0 ){
    db_prepare(&q, "SELECT uuid FROM shun");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pOut, "INSERT OR IGNORE INTO shun VALUES('%s');\n", 
        db_column_text(&q, 0)
      );
    }
    db_finalize(&q);
  }else if( fossil_strcmp(zName, "@reportfmt")==0 ){
    db_prepare(&q, "SELECT title, cols, sqlcode FROM reportfmt");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pOut, "INSERT INTO _xfer_reportfmt(title,cols,sqlcode)"
                         " VALUES(%Q,%Q,%Q);\n", 
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2)
      );
    }
    db_finalize(&q);
  }else if( fossil_strcmp(zName, "@user")==0 ){
    db_prepare(&q, 
        "SELECT login, CASE WHEN length(pw)==40 THEN pw END,"
        "       cap, info, quote(photo) FROM user");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pOut, "INSERT INTO _xfer_user(login,pw,cap,info,photo)"
                         " VALUES(%Q,%Q,%Q,%Q,%s);\n",
        db_column_text(&q, 0),
................................................................................
        db_column_text(&q, 1),
        db_column_text(&q, 2),
        db_column_text(&q, 3),
        db_column_text(&q, 4)
      );
    }
    db_finalize(&q);
  }else if( fossil_strcmp(zName, "@concealed")==0 ){
    db_prepare(&q, "SELECT hash, content FROM concealed");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pOut, "INSERT OR IGNORE INTO concealed(hash,content)"
                         " VALUES(%Q,%Q);\n",
        db_column_text(&q, 0),
        db_column_text(&q, 1)
      );
................................................................................
    db_finalize(&q);
  }
}

/*
** Two SQL functions:
**
**        config_is_reset(int)
**        config_reset(int)
**
** The config_is_reset() function takes the integer valued argument and
** ANDs it against the static variable "configHasBeenReset" below.  The
** function returns TRUE or FALSE depending on the result depending on 
** whether or not the corresponding configuration table has been reset.  The
** config_reset() function adds the bits to "configHasBeenReset" that
** are given in the argument.
**
** These functions are used below in the WHEN clause of a trigger to
** get the trigger to fire exactly once.
*/
static int configHasBeenReset = 0;
static void config_is_reset_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int m = sqlite3_value_int(argv[0]);
  sqlite3_result_int(context, (configHasBeenReset&m)!=0 );
}
static void config_reset_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int m = sqlite3_value_int(argv[0]);
  configHasBeenReset |= m;
}

/*
** Create the temporary _xfer_reportfmt and _xfer_user tables that are
** necessary in order to evalute the SQL text generated by the
** configure_render_special_name() routine.
**
................................................................................
    @   cap TEXT,                       -- Capabilities of this user
    @   cookie TEXT,                    -- WWW login cookie
    @   ipaddr TEXT,                    -- IP address for which cookie is valid
    @   cexpire DATETIME,               -- Time when cookie expires
    @   info TEXT,                      -- contact information
    @   photo BLOB                      -- JPEG image of this user
    @ );
    @ INSERT INTO _xfer_reportfmt
    @    SELECT rn,owner,title,cols,sqlcode FROM reportfmt;
    @ INSERT INTO _xfer_user
    @    SELECT uid,login,pw,cap,cookie,ipaddr,cexpire,info,photo FROM user;
  ;
  db_multi_exec(zSQL1);
  
  /* When the replace flag is set, add triggers that run the first time
  ** that new data is seen.  The triggers run only once and delete all the
  ** existing data.
  */
  if( replaceFlag ){
    static const char zSQL2[] =
      @ CREATE TRIGGER _xfer_r1 BEFORE INSERT ON _xfer_reportfmt
      @ WHEN NOT config_is_reset(2) BEGIN
      @   DELETE FROM _xfer_reportfmt;
      @   SELECT config_reset(2);
      @ END;
      @ CREATE TRIGGER _xfer_r2 BEFORE INSERT ON _xfer_user
      @ WHEN NOT config_is_reset(16) BEGIN
      @   DELETE FROM _xfer_user;
      @   SELECT config_reset(16);
      @ END;
      @ CREATE TEMP TRIGGER _xfer_r3 BEFORE INSERT ON shun
      @ WHEN NOT config_is_reset(8) BEGIN
      @   DELETE FROM shun;
      @   SELECT config_reset(8);
      @ END;
    ;
    sqlite3_create_function(g.db, "config_is_reset", 1, SQLITE_UTF8, 0,
         config_is_reset_function, 0, 0);
    sqlite3_create_function(g.db, "config_reset", 1, SQLITE_UTF8, 0,
         config_reset_function, 0, 0);
    configHasBeenReset = 0;
    db_multi_exec(zSQL2);
  }
}

/*
** After receiving configuration data, call this routine to transfer
** the results into the main database.
................................................................................
    @ DELETE FROM reportfmt;
    @ INSERT INTO reportfmt SELECT * FROM _xfer_reportfmt;
    @ DROP TABLE _xfer_user;
    @ DROP TABLE _xfer_reportfmt;
  ;
  db_multi_exec(zSQL);
}

/*
** Return true if z[] is not a "safe" SQL token.  A safe token is one of:
**
**   *   A string literal
**   *   A blob literal
**   *   An integer literal  (no floating point)
**   *   NULL
*/
static int safeSql(const char *z){
  int i;
  if( z==0 || z[0]==0 ) return 0;
  if( (z[0]=='x' || z[0]=='X') && z[1]=='\'' ) z++;
  if( z[0]=='\'' ){
    for(i=1; z[i]; i++){
      if( z[i]=='\'' ){
        i++;
        if( z[i]=='\'' ){ continue; }
        return z[i]==0;
      }
    }
    return 0;
  }else{
    char c;
    for(i=0; (c = z[i])!=0; i++){
      if( !fossil_isalnum(c) ) return 0;
    }
  }
  return 1;
}

/*
** Return true if z[] consists of nothing but digits
*/
static int safeInt(const char *z){
  int i;
  if( z==0 || z[0]==0 ) return 0;
  for(i=0; fossil_isdigit(z[i]); i++){}
  return z[i]==0;
}

/*
** Process a single "config" card received from the other side of a
** sync session.
**
** Mask consists of one or more CONFIGSET_* values ORed together, to
** designate what types of configuration we are allowed to receive.
**
** NEW FORMAT:
**
** zName is one of "/config", "/user", "/shun", "/reportfmt", or "/concealed".
** zName indicates the table that holds the configuration information being
** transferred.  pContent is a string that consist of alternating Fossil
** and SQL tokens.  The First token is a timestamp in seconds since 1970.
** The second token is a primary key for the table identified by zName.  If
** The entry with the corresponding primary key exists and has a more recent
** mtime, then nothing happens.  If the entry does not exist or if it has
** an older mtime, then the content described by subsequent token pairs is 
** inserted.  The first element of each token pair is a column name and
** the second is its value.
**
** In overview, we have:
**
**    NAME        CONTENT
**    -------     -----------------------------------------------------------
**    /config     $MTIME $NAME value $VALUE
**    /user       $MTIME $LOGIN pw $VALUE cap $VALUE info $VALUE photo $VALUE
**    /shun       $MTIME $UUID scom $VALUE
**    /reportfmt  $MTIME $TITLE owner $VALUE cols $VALUE sqlcode $VALUE
**    /concealed  $MTIME $HASH content $VALUE
**
** OLD FORMAT:
**
** The old format is retained for backwards compatiblity, but is deprecated.
** The cutover from old format to new was on 2011-04-25.  After sufficient
** time has passed, support for the old format will be removed.
**
** zName is either the NAME of an element of the CONFIG table, or else
** one of the special names "@shun", "@reportfmt", "@user", or "@concealed".
** If zName is a CONFIG table name, then CONTENT replaces (overwrites) the
** element in the CONFIG table.  For one of the @-labels, CONTENT is raw
** SQL that is evaluated.  Note that the raw SQL in CONTENT might not
** insert directly into the target table but might instead use a proxy
** table like _fer_reportfmt or _xfer_user.  Such tables must be created
** ahead of time using configure_prepare_to_receive().  Then after multiple
** calls to this routine, configure_finalize_receive() to transfer the
** information received into the true target table.
*/
void configure_receive(const char *zName, Blob *pContent, int groupMask){
  if( zName[0]=='/' ){
    /* The new format */
    char *azToken[12];
    int nToken = 0;
    int ii, jj;
    int thisMask;
    Blob name, value, sql;
    static const struct receiveType {
      const char *zName;
      const char *zPrimKey;
      int nField;
      const char *azField[4];
    } aType[] = {
      { "/config",    "name",  1, { "value", 0, 0, 0 }              },
      { "@user",      "login", 4, { "pw", "cap", "info", "photo" }  },
      { "@shun",      "uuid",  1, { "scom", 0, 0, 0 }               },
      { "@reportfmt", "title", 3, { "owner", "cols", "sqlcode", 0 } },
      { "@concealed", "hash",  1, { "content", 0, 0, 0 }            },
    };
    for(ii=0; ii<count(aType); ii++){
      if( fossil_strcmp(&aType[ii].zName[1],&zName[1])==0 ) break;
    }
    if( ii>=count(aType) ) return;
    while( blob_token(pContent, &name) && blob_sqltoken(pContent, &value) ){
      char *z = blob_terminate(&name);
      if( !safeSql(z) ) return;
      if( nToken>0 ){
        for(jj=0; jj<aType[ii].nField; jj++){
          if( fossil_strcmp(aType[ii].azField[jj], z)==0 ) break;
        }
        if( jj>=aType[ii].nField ) continue;
      }else{
        if( !safeInt(z) ) return;
      }
      azToken[nToken++] = z;
      azToken[nToken++] = z = blob_terminate(&value);
      if( !safeSql(z) ) return;
      if( nToken>=count(azToken) ) break;
    }
    if( nToken<2 ) return;
    if( aType[ii].zName[0]=='/' ){
      thisMask = configure_is_exportable(azToken[1]);
    }else{
      thisMask = configure_is_exportable(aType[ii].zName);
    }
    if( (thisMask & groupMask)==0 ) return;
    
    blob_zero(&sql);
    if( groupMask & CONFIGSET_OVERWRITE ){
      if( (thisMask & configHasBeenReset)==0 && aType[ii].zName[0]!='/' ){
        db_multi_exec("DELETE FROM %s", &aType[ii].zName[1]);
        configHasBeenReset |= thisMask;
      }
      blob_append(&sql, "REPLACE INTO ", -1);
    }else{
      blob_append(&sql, "INSERT OR IGNORE INTO ", -1);
    }
    blob_appendf(&sql, "%s(%s, mtime", &zName[1], aType[ii].zPrimKey);
    for(jj=2; jj<nToken; jj+=2){
       blob_appendf(&sql, ",%s", azToken[jj]);
    }
    blob_appendf(&sql,") VALUES(%s,%s", azToken[1], azToken[0]);
    for(jj=2; jj<nToken; jj+=2){
       blob_appendf(&sql, ",%s", azToken[jj+1]);
    }
    db_multi_exec("%s)", blob_str(&sql));
    if( db_changes()==0 ){
      blob_reset(&sql);
      blob_appendf(&sql, "UPDATE %s SET mtime=%s", &zName[1], azToken[0]);
      for(jj=2; jj<nToken; jj+=2){
        blob_appendf(&sql, ", %s=%s", azToken[jj], azToken[jj+1]);
      }
      blob_appendf(&sql, " WHERE %s=%s AND mtime<%s",
                   aType[ii].zPrimKey, azToken[1], azToken[0]);
      db_multi_exec("%s", blob_str(&sql));
    }
    blob_reset(&sql);
  }else{
    /* Otherwise, the old format */
    if( (configure_is_exportable(zName) & groupMask)==0 ) return;
    if( strcmp(zName, "logo-image")==0 ){
      Stmt ins;
      db_prepare(&ins,
        "REPLACE INTO config(name, value, mtime) VALUES(:name, :value, now())"
      );
      db_bind_text(&ins, ":name", zName);
      db_bind_blob(&ins, ":value", pContent);
      db_step(&ins);
      db_finalize(&ins);
    }else if( zName[0]=='@' ){
      /* Notice that we are evaluating arbitrary SQL received from the
      ** client.  But this can only happen if the client has authenticated
      ** as an administrator, so presumably we trust the client at this
      ** point.
      */
      db_multi_exec("%s", blob_str(pContent));
    }else{
      db_multi_exec(
         "REPLACE INTO config(name,value,mtime) VALUES(%Q,%Q,now())",
         zName, blob_str(pContent)
      );
    }
  }
}

/*
** Process a file full of "config" cards.
*/
void configure_receive_all(Blob *pIn, int groupMask){
  Blob line;
  int nToken;
  int size;
  Blob aToken[4];

  configHasBeenReset = 0;
  while( blob_line(pIn, &line) ){
    if( blob_buffer(&line)[0]=='#' ) continue;
    nToken = blob_tokenize(&line, aToken, count(aToken));
    if( blob_eq(&aToken[0],"config")
     && nToken==3
     && blob_is_int(&aToken[2], &size)
    ){
      const char *zName = blob_str(&aToken[1]);
      Blob content;
      blob_zero(&content);
      blob_extract(pIn, size, &content);
      g.okAdmin = g.okRdAddr = 1;
      configure_receive(zName, &content, groupMask);
      blob_reset(&content);
      blob_seek(pIn, 1, BLOB_SEEK_CUR);
    }
  }
}
    

/*
** Send "config" cards using the new format for all elements of a group
** that have recently changed.
**
** Output goes into pOut.  The groupMask identifies the group(s) to be sent.
** Send only entries whose timestamp is later than or equal to iStart.
**
** Return the number of cards sent.
*/
int configure_send_group(
  Blob *pOut,              /* Write output here */
  int groupMask,           /* Mask of groups to be send */
  sqlite3_int64 iStart     /* Only write values changed since this time */
){
  Stmt q;
  Blob rec;
  int ii;
  int nCard = 0;

  blob_zero(&rec);
  if( groupMask & CONFIGSET_SHUN ){
    db_prepare(&q, "SELECT mtime, quote(uuid), quote(scom) FROM shun"
                   " WHERE mtime>=%lld", iStart);
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(&rec,"%s %s scom %s",
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2)
      );
      blob_appendf(pOut, "config /shun %d\n%s\n",
                   blob_size(&rec), blob_str(&rec));
      nCard++;
      blob_reset(&rec);
    }
    db_finalize(&q);
  }
  if( groupMask & CONFIGSET_USER ){
    db_prepare(&q, "SELECT mtime, quote(login), quote(pw), quote(cap),"
                   "       quote(info), quote(photo) FROM user"
                   " WHERE mtime>=%lld", iStart);
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(&rec,"%s %s pw %s cap %s info %s photo %s",
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2),
        db_column_text(&q, 3),
        db_column_text(&q, 4),
        db_column_text(&q, 5)
      );
      blob_appendf(pOut, "config /user %d\n%s\n",
                   blob_size(&rec), blob_str(&rec));
      nCard++;
      blob_reset(&rec);
    }
    db_finalize(&q);
  }
  if( groupMask & CONFIGSET_TKT ){
    db_prepare(&q, "SELECT mtime, quote(title), quote(owner), quote(cols),"
                   "       quote(sqlcode) FROM reportfmt"
                   " WHERE mtime>=%lld", iStart);
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(&rec,"%s %s owner %s cols %s sqlcode %s",
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2),
        db_column_text(&q, 3),
        db_column_text(&q, 4)
      );
      blob_appendf(pOut, "config /reportfmt %d\n%s\n",
                   blob_size(&rec), blob_str(&rec));
      nCard++;
      blob_reset(&rec);
    }
    db_finalize(&q);
  }
  if( groupMask & CONFIGSET_ADDR ){
    db_prepare(&q, "SELECT mtime, quote(hash), quote(content) FROM concealed"
                   " WHERE mtime>=%lld", iStart);
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(&rec,"%s %s content %s",
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2)
      );
      blob_appendf(pOut, "config /concealed %d\n%s\n",
                   blob_size(&rec), blob_str(&rec));
      nCard++;
      blob_reset(&rec);
    }
    db_finalize(&q);
  }
  db_prepare(&q, "SELECT mtime, quote(name), quote(value) FROM config"
                 " WHERE name=:name AND mtime>=%lld", iStart);
  for(ii=0; ii<count(aConfig); ii++){
    if( (aConfig[ii].groupMask & groupMask)!=0 && aConfig[ii].zName[0]!='@' ){
      db_bind_text(&q, ":name", aConfig[ii].zName);
      while( db_step(&q)==SQLITE_ROW ){
        blob_appendf(&rec,"%s %s value %s",
          db_column_text(&q, 0),
          db_column_text(&q, 1),
          db_column_text(&q, 2)
        );
        blob_appendf(pOut, "config /config %d\n%s\n",
                     blob_size(&rec), blob_str(&rec));
        nCard++;
        blob_reset(&rec);
      }
      db_reset(&q);
    }
  }
  db_finalize(&q);
  return nCard;
}

/*
** Identify a configuration group by name.  Return its mask.
** Throw an error if no match.
*/

int configure_name_to_mask(const char *z, int notFoundIsFatal){
  int i;
  int n = strlen(z);
  for(i=0; i<count(aGroupName); i++){
    if( strncmp(z, &aGroupName[i].zName[1], n)==0 ){
      return aGroupName[i].groupMask;
    }
  }
  if( notFoundIsFatal ){
    printf("Available configuration areas:\n");
    for(i=0; i<count(aGroupName); i++){

      printf("  %-10s %s\n", &aGroupName[i].zName[1], aGroupName[i].zHelp);
    }
    fossil_fatal("no such configuration area: \"%s\"", z);
  }
  return 0;
}

/*
** Write SQL text into file zFilename that will restore the configuration
** area identified by mask to its current state from any other state.
*/
static void export_config(
  int groupMask,            /* Mask indicating which configuration to export */
  const char *zMask,        /* Name of the configuration */
  sqlite3_int64 iStart,     /* Start date */
  const char *zFilename     /* Write into this file */
){

  Blob out;
  blob_zero(&out);
  blob_appendf(&out, 
    "# The \"%s\" configuration exported from\n"
    "# repository \"%s\"\n"
    "# on %s\n",
    zMask, g.zRepositoryName,
    db_text(0, "SELECT datetime('now')")
  );
  configure_send_group(&out, groupMask, iStart);















  blob_write_to_file(&out, zFilename);
  blob_reset(&out);
}


/*
** COMMAND: configuration
................................................................................
**         the current configuration.  Existing values take priority over
**         values read from FILENAME.
**
**    %fossil configuration pull AREA ?URL?
**
**         Pull and install the configuration from a different server
**         identified by URL.  If no URL is specified, then the default
**         server is used. Use the --legacy option for the older protocol
**         (when talking to servers compiled prior to 2011-04-27.)  Use
**         the --overwrite flag to completely replace local settings with
**         content received from URL.
**
**    %fossil configuration push AREA ?URL?
**
**         Push the local configuration into the remote server identified
**         by URL.  Admin privilege is required on the remote server for
**         this to work.  When the same record exists both locally and on
**         the remote end, the one that was most recently changed wins.
**         Use the --legacy flag when talking to holder servers.
**
**    %fossil configuration reset AREA
**
**         Restore the configuration to the default.  AREA as above.
**
**    %fossil configuration sync AREA ?URL?
**
**         Synchronize configuration changes in the local repository with
**         the remote repository at URL.  
*/
void configuration_cmd(void){
  int n;
  const char *zMethod;
  if( g.argc<3 ){
    usage("export|import|merge|pull|reset ...");
  }
  db_find_and_open_repository(0, 0);
  zMethod = g.argv[2];
  n = strlen(zMethod);
  if( strncmp(zMethod, "export", n)==0 ){
    int mask;
    const char *zSince = find_option("since",0,1);
    sqlite3_int64 iStart;
    if( g.argc!=5 ){
      usage("export AREA FILENAME");
    }
    mask = configure_name_to_mask(g.argv[3], 1);
    if( zSince ){
      iStart = db_multi_exec(
         "SELECT coalesce(strftime('%%s',%Q),strftime('%%s','now',%Q))+0",
         zSince, zSince
      );
    }else{
      iStart = 0;
    }
    export_config(mask, g.argv[3], iStart, g.argv[4]);
  }else
  if( strncmp(zMethod, "import", n)==0 
       || strncmp(zMethod, "merge", n)==0 ){
    Blob in;
    int groupMask;
    if( g.argc!=4 ) usage(mprintf("%s FILENAME",zMethod));
    blob_read_from_file(&in, g.argv[3]);
    db_begin_transaction();
    if( zMethod[0]=='i' ){
      groupMask = CONFIGSET_ALL | CONFIGSET_OVERWRITE;
    }else{
      groupMask = CONFIGSET_ALL;
    }
    configure_receive_all(&in, groupMask);
    db_end_transaction(0);
  }else
  if( strncmp(zMethod, "pull", n)==0
   || strncmp(zMethod, "push", n)==0
   || strncmp(zMethod, "sync", n)==0
  ){
    int mask;
    const char *zServer;
    const char *zPw;
    int legacyFlag = 0;
    int overwriteFlag = 0;
    if( zMethod[0]!='s' ) legacyFlag = find_option("legacy",0,0)!=0;
    if( strncmp(zMethod,"pull",n)==0 ){
      overwriteFlag = find_option("overwrite",0,0)!=0;
    }
    url_proxy_options();
    if( g.argc!=4 && g.argc!=5 ){
      usage("pull AREA ?URL?");
    }
    mask = configure_name_to_mask(g.argv[3], 1);
    if( g.argc==5 ){
      zServer = g.argv[4];
      zPw = 0;
      g.dontKeepUrl = 1;
    }else{
      zServer = db_get("last-sync-url", 0);
      if( zServer==0 ){
................................................................................
      }
      zPw = unobscure(db_get("last-sync-pw", 0));
    }
    url_parse(zServer);
    if( g.urlPasswd==0 && zPw ) g.urlPasswd = mprintf("%s", zPw);
    user_select();
    url_enable_proxy("via proxy: ");
    if( legacyFlag ) mask |= CONFIGSET_OLDFORMAT;
    if( overwriteFlag ) mask |= CONFIGSET_OVERWRITE;
    if( strncmp(zMethod, "push", n)==0 ){
      client_sync(0,0,0,0,0,mask);
    }else if( strncmp(zMethod, "pull", n)==0 ){
      client_sync(0,0,0,0,mask,0);
    }else{
      client_sync(0,0,0,0,mask,mask);
    }
  }else
  if( strncmp(zMethod, "reset", n)==0 ){
    int mask, i;
    char *zBackup;
    if( g.argc!=4 ) usage("reset AREA");
    mask = configure_name_to_mask(g.argv[3], 1);
    zBackup = db_text(0, 
       "SELECT strftime('config-backup-%%Y%%m%%d%%H%%M%%f','now')");
    db_begin_transaction();
    export_config(mask, g.argv[3], 0, zBackup);
    for(i=0; i<count(aConfig); i++){
      const char *zName = aConfig[i].zName;
      if( (aConfig[i].groupMask & mask)==0 ) continue;
      if( zName[0]!='@' ){
        db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
      }else if( fossil_strcmp(zName,"@user")==0 ){
        db_multi_exec("DELETE FROM user");
        db_create_default_users(0, 0);
      }else if( fossil_strcmp(zName,"@concealed")==0 ){
        db_multi_exec("DELETE FROM concealed");
      }else if( fossil_strcmp(zName,"@shun")==0 ){
        db_multi_exec("DELETE FROM shun");
      }else if( fossil_strcmp(zName,"@reportfmt")==0 ){
        db_multi_exec("DELETE FROM reportfmt");
      }
    }
    db_end_transaction(0);
    printf("Configuration reset to factory defaults.\n");
    printf("To recover, use:  %s %s import %s\n", 
            fossil_nameofexe(), g.argv[1], zBackup);
  }else
  {
    fossil_fatal("METHOD should be one of:"
                 " export import merge pull push reset");
  }
}

    blob_reset(&contentCache.a[mn].content);
    contentCache.n--;
    contentCache.a[mn] = contentCache.a[contentCache.n];
  }
}

/*
** Add an entry to the content cache



*/
void content_cache_insert(int rid, Blob *pBlob){
  struct cacheLine *p;
  if( contentCache.n>500 || contentCache.szTotal>50000000 ){



    content_cache_expire_oldest();

  }
  if( contentCache.n>=contentCache.nAlloc ){
    contentCache.nAlloc = contentCache.nAlloc*2 + 10;
    contentCache.a = fossil_realloc(contentCache.a,
                             contentCache.nAlloc*sizeof(contentCache.a[0]));
  }
  p = &contentCache.a[contentCache.n++];
................................................................................
    srcid = db_column_int(&q, 0);
  }else{
    srcid = 0;
  }
  db_reset(&q);
  return srcid;
}
















/*
** Check to see if content is available for artifact "rid".  Return
** true if it is.  Return false if rid is a phantom or depends on
** a phantom.
*/
int content_is_available(int rid){
................................................................................
  while( depth++ < 10000000 ){  
    if( bag_find(&contentCache.missing, rid) ){
      return 0;
    }
    if( bag_find(&contentCache.available, rid) ){
      return 1;
    }
    if( db_int(-1, "SELECT size FROM blob WHERE rid=%d", rid)<0 ){
      bag_insert(&contentCache.missing, rid);
      return 0;
    }
    srcid = findSrcid(rid);
    if( srcid==0 ){
      bag_insert(&contentCache.available, rid);
      return 1;
................................................................................
**
**    -R|--repository FILE       Extract artifacts from repository FILE
*/
void artifact_cmd(void){
  int rid;
  Blob content;
  const char *zFile;
  db_find_and_open_repository(1);
  if( g.argc!=4 && g.argc!=3 ) usage("ARTIFACT-ID ?FILENAME? ?OPTIONS?");
  zFile = g.argc==4 ? g.argv[3] : "-";
  rid = name_to_rid(g.argv[2]);
  content_get(rid, &content);
  blob_write_to_file(&content, zFile);
}

................................................................................
    int nChildUsed = 0;
    int i;

    /* Parse the object rid itself */
    if( linkFlag ){
      content_get(rid, &content);
      manifest_crosslink(rid, &content);
      blob_reset(&content);
    }

    /* Parse all delta-manifests that depend on baseline-manifest rid */
    db_prepare(&q, "SELECT rid FROM orphan WHERE baseline=%d", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int child = db_column_int(&q, 0);
      if( nChildUsed>=nChildAlloc ){
................................................................................
      }
      aChild[nChildUsed++] = child;
    }
    db_finalize(&q);
    for(i=0; i<nChildUsed; i++){
      content_get(aChild[i], &content);
      manifest_crosslink(aChild[i], &content);
      blob_reset(&content);
    }
    if( nChildUsed ){
      db_multi_exec("DELETE FROM orphan WHERE baseline=%d", rid);
    }

    /* Recursively dephantomize all artifacts that are derived by
    ** delta from artifact rid */

    nChildUsed = 0;

    db_prepare(&q, "SELECT rid FROM delta WHERE srcid=%d", rid);




    while( db_step(&q)==SQLITE_ROW ){
      int child = db_column_int(&q, 0);
      if( nChildUsed>=nChildAlloc ){
        nChildAlloc = nChildAlloc*2 + 10;
        aChild = fossil_realloc(aChild, nChildAlloc*sizeof(aChild));
      }
      aChild[nChildUsed++] = child;
................................................................................
}

/*
** Write content into the database.  Return the record ID.  If the
** content is already in the database, just return the record ID.
**
** If srcId is specified, then pBlob is delta content from
** the srcId record.  srcId might be a phantom.




**
** zUuid is the UUID of the artifact, if it is specified.  When srcId is
** specified then zUuid must always be specified.  If srcId is zero,
** and zUuid is zero then the correct zUuid is computed from pBlob.
**
** If the record already exists but is a phantom, the pBlob content
** is inserted and the phatom becomes a real record.




*/
int content_put(Blob *pBlob, const char *zUuid, int srcId){






  int size;
  int rid;
  Stmt s1;
  Blob cmpr;
  Blob hash;
  int markAsUnclustered = 0;
  int isDephantomize = 0;
  
  assert( g.repositoryOpen );
  assert( pBlob!=0 );
  assert( srcId==0 || zUuid!=0 );
  if( zUuid==0 ){
    assert( pBlob!=0 );

    sha1sum_blob(pBlob, &hash);
  }else{
    blob_init(&hash, zUuid, -1);
  }



  size = blob_size(pBlob);




  db_begin_transaction();

  /* Check to see if the entry already exists and if it does whether
  ** or not the entry is a phantom
  */
  db_prepare(&s1, "SELECT rid, size FROM blob WHERE uuid=%B", &hash);
  if( db_step(&s1)==SQLITE_ROW ){
................................................................................
       "INSERT INTO rcvfrom(uid, mtime, nonce, ipaddr)"
       "VALUES(%d, julianday('now'), %Q, %Q)",
       g.userUid, g.zNonce, g.zIpAddr
    );
    g.rcvid = db_last_insert_rowid();
  }




  blob_compress(pBlob, &cmpr);

  if( rid>0 ){
    /* We are just adding data to a phantom */
    db_prepare(&s1,
      "UPDATE blob SET rcvid=%d, size=%d, content=:data WHERE rid=%d",
       g.rcvid, size, rid
    );
    db_bind_blob(&s1, ":data", &cmpr);
................................................................................
    );
    db_bind_blob(&s1, ":data", &cmpr);
    db_exec(&s1);
    rid = db_last_insert_rowid();
    if( !pBlob ){
      db_multi_exec("INSERT OR IGNORE INTO phantom VALUES(%d)", rid);
    }
    if( g.markPrivate ){
      db_multi_exec("INSERT INTO private VALUES(%d)", rid);
      markAsUnclustered = 0;
    }
  }
  blob_reset(&cmpr);

  /* If the srcId is specified, then the data we just added is
  ** really a delta.  Record this fact in the delta table.
  */
  if( srcId ){
    db_multi_exec("REPLACE INTO delta(rid,srcid) VALUES(%d,%d)", rid, srcId);
  }
................................................................................
  blob_reset(&hash);

  /* Make arrangements to verify that the data can be recovered
  ** before we commit */
  verify_before_commit(rid);
  return rid;
}

















/*
** Create a new phantom with the given UUID and return its artifact ID.
*/
int content_new(const char *zUuid){
  int rid;
  static Stmt s1, s2, s3;
  
  assert( g.repositoryOpen );
  db_begin_transaction();
  if( uuid_is_shunned(zUuid) ){
    db_end_transaction(0);
................................................................................
  db_exec(&s1);
  rid = db_last_insert_rowid();
  db_static_prepare(&s2,
    "INSERT INTO phantom VALUES(:rid)"
  );
  db_bind_int(&s2, ":rid", rid);
  db_exec(&s2);
  if( g.markPrivate ){
    db_multi_exec("INSERT INTO private VALUES(%d)", rid);
  }else{
    db_static_prepare(&s3,
      "INSERT INTO unclustered VALUES(:rid)"
    );
    db_bind_int(&s3, ":rid", rid);
    db_exec(&s3);
................................................................................
  return rid;
}


/*
** COMMAND:  test-content-put
**
** Extract a blob from the database and write it into a file.
*/
void test_content_put_cmd(void){
  int rid;
  Blob content;
  if( g.argc!=3 ) usage("FILENAME");
  db_must_be_within_tree();
  user_select();
  blob_read_from_file(&content, g.argv[2]);
  rid = content_put(&content, 0, 0);
  printf("inserted as record %d\n", rid);
}

/*
** Make sure the content at rid is the original content and is not a
** delta.
*/
................................................................................
** the source of the delta.  It is OK to delta private->private and
** public->private and public->public.  Just no private->public delta.
**
** If srcid is a delta that depends on rid, then srcid is
** converted to undeltaed text.
**
** If either rid or srcid contain less than 50 bytes, or if the
** resulting delta does not achieve a compression of at least 25% on
** its own the rid is left untouched.


*/
void content_deltify(int rid, int srcid, int force){
  int s;
  Blob data, src, delta;
  Stmt s1, s2;


  if( srcid==rid ) return;
  if( !force && findSrcid(rid)>0 ) return;
  if( content_is_private(srcid) && !content_is_private(rid) ){
    return;
  }
  s = srcid;
  while( (s = findSrcid(s))>0 ){
    if( s==rid ){
      content_undelta(srcid);
      break;
    }
  }
  content_get(srcid, &src);
  if( blob_size(&src)<50 ){
    blob_reset(&src);
    return;
  }
  content_get(rid, &data);
  if( blob_size(&data)<50 ){
    blob_reset(&src);
    blob_reset(&data);
    return;
  }
  blob_delta_create(&src, &data, &delta);
  if( blob_size(&delta) < blob_size(&data)*0.75 ){
    blob_compress(&delta, &delta);
    db_prepare(&s1, "UPDATE blob SET content=:data WHERE rid=%d", rid);
    db_prepare(&s2, "REPLACE INTO delta(rid,srcid)VALUES(%d,%d)", rid, srcid);
    db_bind_blob(&s1, ":data", &delta);
    db_begin_transaction();
    db_exec(&s1);
    db_exec(&s2);
    db_end_transaction(0);
    db_finalize(&s1);
    db_finalize(&s2);
    verify_before_commit(rid);

  }
  blob_reset(&src);
  blob_reset(&data);
  blob_reset(&delta);

}

/*
** COMMAND:  test-content-deltify
**
** Convert the content at RID into a delta from SRCID.
*/
void test_content_deltify_cmd(void){
  if( g.argc!=5 ) usage("RID SRCID FORCE");
  db_must_be_within_tree();
  content_deltify(atoi(g.argv[2]), atoi(g.argv[3]), atoi(g.argv[4]));
}

    blob_reset(&contentCache.a[mn].content);
    contentCache.n--;
    contentCache.a[mn] = contentCache.a[contentCache.n];
  }
}

/*
** Add an entry to the content cache.
**
** This routines hands responsibility for the artifact over to the cache.
** The cache will deallocate memory when it has finished with it.
*/
void content_cache_insert(int rid, Blob *pBlob){
  struct cacheLine *p;
  if( contentCache.n>500 || contentCache.szTotal>50000000 ){
    i64 szBefore;
    do{
      szBefore = contentCache.szTotal;
      content_cache_expire_oldest();
    }while( contentCache.szTotal>50000000 && contentCache.szTotal<szBefore );
  }
  if( contentCache.n>=contentCache.nAlloc ){
    contentCache.nAlloc = contentCache.nAlloc*2 + 10;
    contentCache.a = fossil_realloc(contentCache.a,
                             contentCache.nAlloc*sizeof(contentCache.a[0]));
  }
  p = &contentCache.a[contentCache.n++];
................................................................................
    srcid = db_column_int(&q, 0);
  }else{
    srcid = 0;
  }
  db_reset(&q);
  return srcid;
}

/*
** Return the blob.size field given blob.rid
*/
int content_size(int rid, int dflt){
  static Stmt q;
  int sz = dflt;
  db_static_prepare(&q, "SELECT size FROM blob WHERE rid=:r");
  db_bind_int(&q, ":r", rid);
  if( db_step(&q)==SQLITE_ROW ){
    sz = db_column_int(&q, 0);
  }
  db_reset(&q);
  return sz;
}

/*
** Check to see if content is available for artifact "rid".  Return
** true if it is.  Return false if rid is a phantom or depends on
** a phantom.
*/
int content_is_available(int rid){
................................................................................
  while( depth++ < 10000000 ){  
    if( bag_find(&contentCache.missing, rid) ){
      return 0;
    }
    if( bag_find(&contentCache.available, rid) ){
      return 1;
    }
    if( content_size(rid, -1)<0 ){
      bag_insert(&contentCache.missing, rid);
      return 0;
    }
    srcid = findSrcid(rid);
    if( srcid==0 ){
      bag_insert(&contentCache.available, rid);
      return 1;
................................................................................
**
**    -R|--repository FILE       Extract artifacts from repository FILE
*/
void artifact_cmd(void){
  int rid;
  Blob content;
  const char *zFile;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  if( g.argc!=4 && g.argc!=3 ) usage("ARTIFACT-ID ?FILENAME? ?OPTIONS?");
  zFile = g.argc==4 ? g.argv[3] : "-";
  rid = name_to_rid(g.argv[2]);
  content_get(rid, &content);
  blob_write_to_file(&content, zFile);
}

................................................................................
    int nChildUsed = 0;
    int i;

    /* Parse the object rid itself */
    if( linkFlag ){
      content_get(rid, &content);
      manifest_crosslink(rid, &content);
      assert( blob_is_reset(&content) );
    }

    /* Parse all delta-manifests that depend on baseline-manifest rid */
    db_prepare(&q, "SELECT rid FROM orphan WHERE baseline=%d", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int child = db_column_int(&q, 0);
      if( nChildUsed>=nChildAlloc ){
................................................................................
      }
      aChild[nChildUsed++] = child;
    }
    db_finalize(&q);
    for(i=0; i<nChildUsed; i++){
      content_get(aChild[i], &content);
      manifest_crosslink(aChild[i], &content);
      assert( blob_is_reset(&content) );
    }
    if( nChildUsed ){
      db_multi_exec("DELETE FROM orphan WHERE baseline=%d", rid);
    }

    /* Recursively dephantomize all artifacts that are derived by
    ** delta from artifact rid and which have not already been
    ** cross-linked.  */
    nChildUsed = 0;
    db_prepare(&q, 
       "SELECT rid FROM delta"
       " WHERE srcid=%d"
       "   AND NOT EXISTS(SELECT 1 FROM mlink WHERE mid=delta.rid)",
       rid
    );
    while( db_step(&q)==SQLITE_ROW ){
      int child = db_column_int(&q, 0);
      if( nChildUsed>=nChildAlloc ){
        nChildAlloc = nChildAlloc*2 + 10;
        aChild = fossil_realloc(aChild, nChildAlloc*sizeof(aChild));
      }
      aChild[nChildUsed++] = child;
................................................................................
}

/*
** Write content into the database.  Return the record ID.  If the
** content is already in the database, just return the record ID.
**
** If srcId is specified, then pBlob is delta content from
** the srcId record.  srcId might be a phantom.  
**
** pBlob is normally uncompressed text.  But if nBlob>0 then the
** pBlob value has already been compressed and nBlob is its uncompressed
** size.  If nBlob>0 then zUuid must be valid.
**
** zUuid is the UUID of the artifact, if it is specified.  When srcId is
** specified then zUuid must always be specified.  If srcId is zero,
** and zUuid is zero then the correct zUuid is computed from pBlob.
**
** If the record already exists but is a phantom, the pBlob content
** is inserted and the phatom becomes a real record.
**
** The original content of pBlob is not disturbed.  The caller continues
** to be responsible for pBlob.  This routine does *not* take over
** responsiblity for freeing pBlob.
*/
int content_put_ex(
  Blob *pBlob,              /* Content to add to the repository */
  const char *zUuid,        /* SHA1 hash of reconstructed pBlob */
  int srcId,                /* pBlob is a delta from this entry */
  int nBlob,                /* pBlob is compressed. Original size is this */
  int isPrivate             /* The content should be marked private */
){
  int size;
  int rid;
  Stmt s1;
  Blob cmpr;
  Blob hash;
  int markAsUnclustered = 0;
  int isDephantomize = 0;
  
  assert( g.repositoryOpen );
  assert( pBlob!=0 );
  assert( srcId==0 || zUuid!=0 );
  if( zUuid==0 ){
    assert( pBlob!=0 );
    assert( nBlob==0 );
    sha1sum_blob(pBlob, &hash);
  }else{
    blob_init(&hash, zUuid, -1);
  }
  if( nBlob ){
    size = nBlob;
  }else{
    size = blob_size(pBlob);
    if( srcId ){
      size = delta_output_size(blob_buffer(pBlob), size);
    }
  }
  db_begin_transaction();

  /* Check to see if the entry already exists and if it does whether
  ** or not the entry is a phantom
  */
  db_prepare(&s1, "SELECT rid, size FROM blob WHERE uuid=%B", &hash);
  if( db_step(&s1)==SQLITE_ROW ){
................................................................................
       "INSERT INTO rcvfrom(uid, mtime, nonce, ipaddr)"
       "VALUES(%d, julianday('now'), %Q, %Q)",
       g.userUid, g.zNonce, g.zIpAddr
    );
    g.rcvid = db_last_insert_rowid();
  }

  if( nBlob ){
    cmpr = pBlob[0];
  }else{
    blob_compress(pBlob, &cmpr);
  }
  if( rid>0 ){
    /* We are just adding data to a phantom */
    db_prepare(&s1,
      "UPDATE blob SET rcvid=%d, size=%d, content=:data WHERE rid=%d",
       g.rcvid, size, rid
    );
    db_bind_blob(&s1, ":data", &cmpr);
................................................................................
    );
    db_bind_blob(&s1, ":data", &cmpr);
    db_exec(&s1);
    rid = db_last_insert_rowid();
    if( !pBlob ){
      db_multi_exec("INSERT OR IGNORE INTO phantom VALUES(%d)", rid);
    }
    if( g.markPrivate || isPrivate ){
      db_multi_exec("INSERT INTO private VALUES(%d)", rid);
      markAsUnclustered = 0;
    }
  }
  if( nBlob==0 ) blob_reset(&cmpr);

  /* If the srcId is specified, then the data we just added is
  ** really a delta.  Record this fact in the delta table.
  */
  if( srcId ){
    db_multi_exec("REPLACE INTO delta(rid,srcid) VALUES(%d,%d)", rid, srcId);
  }
................................................................................
  blob_reset(&hash);

  /* Make arrangements to verify that the data can be recovered
  ** before we commit */
  verify_before_commit(rid);
  return rid;
}

/*
** This is the simple common case for inserting content into the
** repository.  pBlob is the content to be inserted.
**
** pBlob is uncompressed and is not deltaed.  It is exactly the content
** to be inserted.
**
** The original content of pBlob is not disturbed.  The caller continues
** to be responsible for pBlob.  This routine does *not* take over
** responsiblity for freeing pBlob.
*/
int content_put(Blob *pBlob){
  return content_put_ex(pBlob, 0, 0, 0, 0);
}


/*
** Create a new phantom with the given UUID and return its artifact ID.
*/
int content_new(const char *zUuid, int isPrivate){
  int rid;
  static Stmt s1, s2, s3;
  
  assert( g.repositoryOpen );
  db_begin_transaction();
  if( uuid_is_shunned(zUuid) ){
    db_end_transaction(0);
................................................................................
  db_exec(&s1);
  rid = db_last_insert_rowid();
  db_static_prepare(&s2,
    "INSERT INTO phantom VALUES(:rid)"
  );
  db_bind_int(&s2, ":rid", rid);
  db_exec(&s2);
  if( g.markPrivate || isPrivate ){
    db_multi_exec("INSERT INTO private VALUES(%d)", rid);
  }else{
    db_static_prepare(&s3,
      "INSERT INTO unclustered VALUES(:rid)"
    );
    db_bind_int(&s3, ":rid", rid);
    db_exec(&s3);
................................................................................
  return rid;
}


/*
** COMMAND:  test-content-put
**
** Extract a blob from a file and write it into the database
*/
void test_content_put_cmd(void){
  int rid;
  Blob content;
  if( g.argc!=3 ) usage("FILENAME");
  db_must_be_within_tree();
  user_select();
  blob_read_from_file(&content, g.argv[2]);
  rid = content_put(&content);
  printf("inserted as record %d\n", rid);
}

/*
** Make sure the content at rid is the original content and is not a
** delta.
*/
................................................................................
** the source of the delta.  It is OK to delta private->private and
** public->private and public->public.  Just no private->public delta.
**
** If srcid is a delta that depends on rid, then srcid is
** converted to undeltaed text.
**
** If either rid or srcid contain less than 50 bytes, or if the
** resulting delta does not achieve a compression of at least 25% 
** the rid is left untouched.
**
** Return 1 if a delta is made and 0 if no delta occurs.
*/
int content_deltify(int rid, int srcid, int force){
  int s;
  Blob data, src, delta;
  Stmt s1, s2;
  int rc = 0;

  if( srcid==rid ) return 0;
  if( !force && findSrcid(rid)>0 ) return 0;
  if( content_is_private(srcid) && !content_is_private(rid) ){
    return 0;
  }
  s = srcid;
  while( (s = findSrcid(s))>0 ){
    if( s==rid ){
      content_undelta(srcid);
      break;
    }
  }
  content_get(srcid, &src);
  if( blob_size(&src)<50 ){
    blob_reset(&src);
    return 0;
  }
  content_get(rid, &data);
  if( blob_size(&data)<50 ){
    blob_reset(&src);
    blob_reset(&data);
    return 0;
  }
  blob_delta_create(&src, &data, &delta);
  if( blob_size(&delta) <= blob_size(&data)*0.75 ){
    blob_compress(&delta, &delta);
    db_prepare(&s1, "UPDATE blob SET content=:data WHERE rid=%d", rid);
    db_prepare(&s2, "REPLACE INTO delta(rid,srcid)VALUES(%d,%d)", rid, srcid);
    db_bind_blob(&s1, ":data", &delta);
    db_begin_transaction();
    db_exec(&s1);
    db_exec(&s2);
    db_end_transaction(0);
    db_finalize(&s1);
    db_finalize(&s2);
    verify_before_commit(rid);
    rc = 1;
  }
  blob_reset(&src);
  blob_reset(&data);
  blob_reset(&delta);
  return rc;
}

/*
** COMMAND:  test-content-deltify
**
** Convert the content at RID into a delta from SRCID.
*/
void test_content_deltify_cmd(void){
  if( g.argc!=5 ) usage("RID SRCID FORCE");
  db_must_be_within_tree();
  content_deltify(atoi(g.argv[2]), atoi(g.argv[3]), atoi(g.argv[4]));
}

/*
** COMMAND: test-integrity
**
** Verify that all content can be extracted from the BLOB table correctly.
** If the BLOB table is correct, then the repository can always be
** successfully reconstructed using "fossil rebuild".
*/
void test_integrity(void){
  Stmt q;
  Blob content;
  Blob cksum;
  int n1 = 0;
  int n2 = 0;
  int total;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 2);
  db_prepare(&q, "SELECT rid, uuid, size FROM blob ORDER BY rid");
  total = db_int(0, "SELECT max(rid) FROM blob");
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    int size = db_column_int(&q, 2);
    n1++;
    printf("  %d/%d\r", n1, total);
    fflush(stdout);
    if( size<0 ){
      printf("skip phantom %d %s\n", rid, zUuid);
      continue;  /* Ignore phantoms */
    }
    content_get(rid, &content);
    if( blob_size(&content)!=size ){
      fossil_warning("size mismatch on blob rid=%d:  %d vs %d",
                     rid, blob_size(&content), size);
    }
    sha1sum_blob(&content, &cksum);
    if( strcmp(blob_str(&cksum), zUuid)!=0 ){
      fossil_fatal("checksum mismatch on blob rid=%d: %s vs %s",
                   rid, blob_str(&cksum), zUuid);
    }
    blob_reset(&cksum);
    blob_reset(&content);
    n2++;
  }
  db_finalize(&q);
  printf("%d non-phantom blobs (out of %d total) verified\n", n2, n1);
}

#if ! defined(_WIN32)
#  include <pwd.h>
#endif
#include <sqlite3.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

#include "db.h"

#if INTERFACE
/*
** An single SQL statement is represented as an instance of the following
** structure.
*/
................................................................................
  }
  if( g.cgiOutput ){
    g.cgiOutput = 0;
    cgi_printf("<h1>Database Error</h1>\n"
               "<pre>%h</pre><p>%s</p>", z, zRebuildMsg);
    cgi_reply();
  }else{
    fprintf(stderr, "%s: %s\n\n%s", g.argv[0], z, zRebuildMsg);
  }
  db_force_rollback();
  fossil_exit(1);
}

static int nBegin = 0;      /* Nesting depth of BEGIN */
static int isNewRepo = 0;   /* True if the repository is newly created */
static int doRollback = 0;  /* True to force a rollback */
static int nCommitHook = 0; /* Number of commit hooks */
static struct sCommitHook {
  int (*xHook)(void);  /* Functions to call at db_end_transaction() */
  int sequence;        /* Call functions in sequence order */
} aHook[5];
static Stmt *pAllStmt = 0;  /* List of all unfinalized statements */













/*
** This routine is called by the SQLite commit-hook mechanism
** just prior to each commit.  All this routine does is verify
** that nBegin really is zero.  That insures that transactions
** cannot commit by any means other than by calling db_end_transaction()
** below.
................................................................................
void db_end_transaction(int rollbackFlag){
  if( g.db==0 ) return;
  if( nBegin<=0 ) return;
  if( rollbackFlag ) doRollback = 1;
  nBegin--;
  if( nBegin==0 ){
    int i;

    for(i=0; doRollback==0 && i<nCommitHook; i++){
      doRollback |= aHook[i].xHook();
    }



    db_multi_exec(doRollback ? "ROLLBACK" : "COMMIT");
    doRollback = 0;
  }
}




void db_force_rollback(void){

  static int busy = 0;
  if( busy || g.db==0 ) return;
  busy = 1;
  undo_rollback();



  if( nBegin ){
    sqlite3_exec(g.db, "ROLLBACK", 0, 0, 0);
    nBegin = 0;
    if( isNewRepo ){
      db_close();
      unlink(g.zRepositoryName);
    }
  }
  busy = 0;




}

/*
** Install a commit hook.  Hooks are installed in sequence order.
** It is an error to install the same commit hook more than once.
**
** Each commit hook is called (in order of accending sequence) at
................................................................................
}

/*
** Prepare a Stmt.  Assume that the Stmt is previously uninitialized.
** If the input string contains multiple SQL statements, only the first
** one is processed.  All statements beyond the first are silently ignored.
*/
int db_vprepare(Stmt *pStmt, const char *zFormat, va_list ap){

  char *zSql;
  blob_zero(&pStmt->sql);
  blob_vappendf(&pStmt->sql, zFormat, ap);
  va_end(ap);
  zSql = blob_str(&pStmt->sql);

  if( sqlite3_prepare_v2(g.db, zSql, -1, &pStmt->pStmt, 0)!=0 ){

    db_err("%s\n%s", sqlite3_errmsg(g.db), zSql);
  }
  pStmt->pNext = pStmt->pPrev = 0;
  pStmt->nStep = 0;
  return 0;
}
int db_prepare(Stmt *pStmt, const char *zFormat, ...){
  int rc;
  va_list ap;
  va_start(ap, zFormat);
  rc = db_vprepare(pStmt, zFormat, ap);








  va_end(ap);
  return rc;
}
int db_static_prepare(Stmt *pStmt, const char *zFormat, ...){
  int rc = SQLITE_OK;
  if( blob_size(&pStmt->sql)==0 ){
    va_list ap;
    va_start(ap, zFormat);
    rc = db_vprepare(pStmt, zFormat, ap);
    pStmt->pNext = pAllStmt;
    pStmt->pPrev = 0;
    if( pAllStmt ) pAllStmt->pPrev = pStmt;
    pAllStmt = pStmt;
    va_end(ap);
  }
  return rc;
................................................................................
}
double db_column_double(Stmt *pStmt, int N){
  return sqlite3_column_double(pStmt->pStmt, N);
}
const char *db_column_text(Stmt *pStmt, int N){
  return (char*)sqlite3_column_text(pStmt->pStmt, N);
}



const char *db_column_name(Stmt *pStmt, int N){
  return (char*)sqlite3_column_name(pStmt->pStmt, N);
}
int db_column_count(Stmt *pStmt){
  return sqlite3_column_count(pStmt->pStmt);
}
char *db_column_malloc(Stmt *pStmt, int N){
................................................................................
** Execute a query and return a single integer value.
*/
i64 db_int64(i64 iDflt, const char *zSql, ...){
  va_list ap;
  Stmt s;
  i64 rc;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    rc = iDflt;
  }else{
    rc = db_column_int64(&s, 0);
  }
  db_finalize(&s);
................................................................................
  return rc;
}
int db_int(int iDflt, const char *zSql, ...){
  va_list ap;
  Stmt s;
  int rc;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    rc = iDflt;
  }else{
    rc = db_column_int(&s, 0);
  }
  db_finalize(&s);
................................................................................
** FALSE if the query result would be an empty set.
*/
int db_exists(const char *zSql, ...){
  va_list ap;
  Stmt s;
  int rc;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    rc = 0;
  }else{
    rc = 1;
  }
  db_finalize(&s);
................................................................................
** Execute a query and return a floating-point value.
*/
double db_double(double rDflt, const char *zSql, ...){
  va_list ap;
  Stmt s;
  double r;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    r = rDflt;
  }else{
    r = db_column_double(&s, 0);
  }
  db_finalize(&s);
................................................................................
** Execute a query and append the first column of the first row
** of the result set to blob given in the first argument.
*/
void db_blob(Blob *pResult, const char *zSql, ...){
  va_list ap;
  Stmt s;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  va_end(ap);
  if( db_step(&s)==SQLITE_ROW ){
    blob_append(pResult, sqlite3_column_blob(s.pStmt, 0),
                         sqlite3_column_bytes(s.pStmt, 0));
  }
  db_finalize(&s);
}
................................................................................
** zDefault instead.
*/
char *db_text(char *zDefault, const char *zSql, ...){
  va_list ap;
  Stmt s;
  char *z;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  va_end(ap);
  if( db_step(&s)==SQLITE_ROW ){
    z = mprintf("%s", sqlite3_column_text(s.pStmt, 0));
  }else if( zDefault ){
    z = mprintf("%s", zDefault);
  }else{
    z = 0;
  }
  db_finalize(&s);
  return z;
}

#if defined(_WIN32)
extern char *sqlite3_win32_mbcs_to_utf8(const char*);
#endif

/*
** Initialize a new database file with the given schema.  If anything
** goes wrong, call db_err() to exit.
*/
void db_init_database(
  const char *zFileName,   /* Name of database file to create */
  const char *zSchema,     /* First part of schema */
................................................................................
  ...                      /* Additional SQL to run.  Terminate with NULL. */
){
  sqlite3 *db;
  int rc;
  const char *zSql;
  va_list ap;

#if defined(_WIN32)
  zFileName = sqlite3_win32_mbcs_to_utf8(zFileName);
#endif
  rc = sqlite3_open(zFileName, &db);
  if( rc!=SQLITE_OK ){
    db_err(sqlite3_errmsg(db));
  }
  sqlite3_busy_timeout(db, 5000);
  sqlite3_exec(db, "BEGIN EXCLUSIVE", 0, 0, 0);
  rc = sqlite3_exec(db, zSchema, 0, 0, 0);
................................................................................
      db_err(sqlite3_errmsg(db));
    }
  }
  va_end(ap);
  sqlite3_exec(db, "COMMIT", 0, 0, 0);
  sqlite3_close(db);
}














/*
** Open a database file.  Return a pointer to the new database
** connection.  An error results in process abort.
*/
static sqlite3 *openDatabase(const char *zDbName){
  int rc;
  const char *zVfs;
  sqlite3 *db;

  zVfs = getenv("FOSSIL_VFS");
#if defined(_WIN32)
  zDbName = sqlite3_win32_mbcs_to_utf8(zDbName);
#endif
  rc = sqlite3_open_v2(
       zDbName, &db,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       zVfs
  );
  if( rc!=SQLITE_OK ){
    db_err(sqlite3_errmsg(db));
  }
  sqlite3_busy_timeout(db, 5000); 
  sqlite3_wal_autocheckpoint(db, 1);  /* Set to checkpoint frequently */

  return db;
}


/*
** zDbName is the name of a database file.  If no other database
** file is open, then open this one.  If another database file is
** already open, then attach zDbName using the name zLabel.
*/
void db_open_or_attach(const char *zDbName, const char *zLabel){
  if( !g.db ){
    g.db = openDatabase(zDbName);
    g.zRepoDb = "main";
    db_connection_init();
  }else{
#if defined(_WIN32)
    zDbName = sqlite3_win32_mbcs_to_utf8(zDbName);
#endif
    db_multi_exec("ATTACH DATABASE %Q AS %s", zDbName, zLabel);
    g.zRepoDb = mprintf("%s", zLabel);
  }
}

/*
** Open the user database in "~/.fossil".  Create the database anew if
** it does not already exist.
**
................................................................................
  const char *zHome;
  if( g.configOpen ) return;
#if defined(_WIN32)
  zHome = getenv("LOCALAPPDATA");
  if( zHome==0 ){
    zHome = getenv("APPDATA");
    if( zHome==0 ){

      zHome = getenv("HOMEPATH");

    }
  }
  if( zHome==0 ){
    fossil_fatal("cannot locate home directory - "

                "please set the HOMEPATH environment variable");
  }
#else
  zHome = getenv("HOME");
  if( zHome==0 ){
    fossil_fatal("cannot locate home directory - "
                 "please set the HOME environment variable");
  }
................................................................................
  if( useAttach ){
    db_open_or_attach(zDbName, "configdb");
    g.dbConfig = 0;
  }else{
    g.dbConfig = openDatabase(zDbName);
  }
  g.configOpen = 1;

}

/*
** If zDbName is a valid local database file, open it and return
** true.  If it is not a valid local database file, return 0.
*/
static int isValidLocalDb(const char *zDbName){
................................................................................
  db_open_repository(0);

  /* If the "isexe" column is missing from the vfile table, then
  ** add it now.   This code added on 2010-03-06.  After all users have
  ** upgraded, this code can be safely deleted. 
  */
  rc = sqlite3_prepare(g.db, "SELECT isexe FROM vfile", -1, &pStmt, 0);

  sqlite3_finalize(pStmt);
  if( rc==SQLITE_ERROR ){
    sqlite3_exec(g.db, "ALTER TABLE vfile ADD COLUMN isexe BOOLEAN", 0, 0, 0);
  }

#if 0
  /* If the "mtime" column is missing from the vfile table, then
................................................................................
  n = strlen(zPwd);
  zPwdConv = mprintf("%/", zPwd);
  strncpy(zPwd, zPwdConv, 2000-20);
  free(zPwdConv);
  while( n>0 ){
    if( access(zPwd, W_OK) ) break;
    for(i=0; i<sizeof(aDbName)/sizeof(aDbName[0]); i++){
      strcpy(&zPwd[n], aDbName[i]);
      if( isValidLocalDb(zPwd) ){
        /* Found a valid checkout database file */
        zPwd[n] = 0;
        while( n>1 && zPwd[n-1]=='/' ){
          n--;
          zPwd[n] = 0;
        }
................................................................................
    }
  }
  db_open_or_attach(zDbName, "repository");
  g.repositoryOpen = 1;
  g.zRepositoryName = mprintf("%s", zDbName);
}









/*
** Try to find the repository and open it.  Use the -R or --repository
** option to locate the repository.  If no such option is available, then
** use the repository of the open checkout if there is one.
**
** Error out if the repository cannot be opened.
*/
void db_find_and_open_repository(int errIfNotFound){
  const char *zRep = find_option("repository", "R", 1);



  if( zRep==0 ){
    if( db_open_local()==0 ){
      goto rep_not_found;
    }
    zRep = db_lget("repository", 0);
    if( zRep==0 ){
      goto rep_not_found;
    }
  }
  db_open_repository(zRep);
  if( g.repositoryOpen ){

    return;
  }
rep_not_found:
  if( errIfNotFound ){
    fossil_fatal("use --repository or -R to specify the repository database");
  }
}




































/*
** COMMAND: test-move-repository
**
** Usage: %fossil test-move-repository PATHNAME
**
** Change the location of the repository database on a local check-out.
................................................................................
  file_canonical_name(g.argv[2], &repo);
  zRepo = blob_str(&repo);
  if( access(zRepo, 0) ){
    fossil_fatal("no such file: %s", zRepo);
  }
  db_open_or_attach(zRepo, "test_repo");
  db_lset("repository", blob_str(&repo));
  db_close();
}


/*
** Open the local database.  If unable, exit with an error.
*/
void db_must_be_within_tree(void){
  if( db_open_local()==0 ){
    fossil_fatal("not within an open checkout");
  }
  db_open_repository(0);

}

/*
** Close the database connection.



*/
void db_close(void){
  sqlite3_stmt *pStmt;
  if( g.db==0 ) return;


























  while( pAllStmt ){
    db_finalize(pAllStmt);
  }
  db_end_transaction(1);
  pStmt = 0;

  while( (pStmt = sqlite3_next_stmt(g.db, pStmt))!=0 ){
    fossil_warning("unfinalized SQL statement: [%s]", sqlite3_sql(pStmt));

  }
  g.repositoryOpen = 0;
  g.localOpen = 0;
  g.configOpen = 0;
  sqlite3_wal_checkpoint(g.db, 0);
  sqlite3_close(g.db);
  g.db = 0;
................................................................................
void db_create_repository(const char *zFilename){
  db_init_database(
     zFilename,
     zRepositorySchema1,
     zRepositorySchema2,
     (char*)0
  );
  isNewRepo = 1;
}

/*
** Create the default user accounts in the USER table.
*/
void db_create_default_users(int setupUserOnly, const char *zDefaultUser){
  const char *zUser;
................................................................................
  db_multi_exec(
     "INSERT INTO user(login, pw, cap, info)"
     "VALUES(%Q,lower(hex(randomblob(3))),'s','')", zUser
  );
  if( !setupUserOnly ){
    db_multi_exec(
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('anonymous',hex(randomblob(8)),'ghmncz','Anon');"
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('nobody','','jor','Nobody');"
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('developer','','dei','Dev');"
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('reader','','kptw','Reader');"
    );
  }
}
................................................................................
  Blob hash;
  Blob manifest;

  db_set("content-schema", CONTENT_SCHEMA, 0);
  db_set("aux-schema", AUX_SCHEMA, 0);
  if( makeServerCodes ){
    db_multi_exec(
      "INSERT INTO config(name,value)"
      " VALUES('server-code', lower(hex(randomblob(20))));"
      "INSERT INTO config(name,value)"
      " VALUES('project-code', lower(hex(randomblob(20))));"
    );
  }
  if( !db_is_global("autosync") ) db_set_int("autosync", 1, 0);
  if( !db_is_global("localauth") ) db_set_int("localauth", 0, 0);
  db_create_default_users(0, zDefaultUser);
  user_select();

................................................................................
    blob_appendf(&manifest, "R %s\n", md5sum_finish(0));
    blob_appendf(&manifest, "T *branch * trunk\n");
    blob_appendf(&manifest, "T *sym-trunk *\n");
    blob_appendf(&manifest, "U %F\n", g.zLogin);
    md5sum_blob(&manifest, &hash);
    blob_appendf(&manifest, "Z %b\n", &hash);
    blob_reset(&hash);
    rid = content_put(&manifest, 0, 0);
    manifest_crosslink(rid, &manifest);
  }
}

/*
** COMMAND: new
** COMMAND: init
................................................................................
  }
  db_create_repository(g.argv[2]);
  db_open_repository(g.argv[2]);
  db_open_config(0);
  db_begin_transaction();
  db_initial_setup(zDate, zDefaultUser, 1);
  db_end_transaction(0);
  printf("project-id: %s\n", db_get("project-code", 0));
  printf("server-id:  %s\n", db_get("server-code", 0));
  zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
  printf("admin-user: %s (initial password is \"%s\")\n", g.zLogin, zPassword);

}

/*
** SQL functions for debugging.
**
** The print() function writes its arguments on stdout, but only
** if the -sqlprint command-line option is turned on.
................................................................................
  int argc,
  sqlite3_value **argv
){
  int i;
  if( g.fSqlPrint ){
    for(i=0; i<argc; i++){
      char c = i==argc-1 ? '\n' : ' ';
      printf("%s%c", sqlite3_value_text(argv[i]), c);
    }
  }
}
static void db_sql_trace(void *notUsed, const char *zSql){
  int n = strlen(zSql);
  fprintf(stderr, "%s%s\n", zSql, (n>0 && zSql[n-1]==';') ? "" : ";");
}
................................................................................
  Blob out;
  if( n==40 && validate16(zContent, n) ){
    memcpy(zHash, zContent, n);
    zHash[n] = 0;
  }else{
    sha1sum_step_text(zContent, n);
    sha1sum_finish(&out);
    strcpy(zHash, blob_str(&out));
    blob_reset(&out);
    db_multi_exec(
       "INSERT OR IGNORE INTO concealed VALUES(%Q,%#Q)",

       zHash, n, zContent
    );
  }
  return zHash;
}

/*
................................................................................
/*
** Return true if the string zVal represents "true" (or "false").
*/
int is_truth(const char *zVal){
  static const char *azOn[] = { "on", "yes", "true", "1" };
  int i;
  for(i=0; i<sizeof(azOn)/sizeof(azOn[0]); i++){
    if( strcmp(zVal,azOn[i])==0 ) return 1;
  }
  return 0;
}
int is_false(const char *zVal){
  static const char *azOff[] = { "off", "no", "false", "0" };
  int i;
  for(i=0; i<sizeof(azOff)/sizeof(azOff[0]); i++){
    if( strcmp(zVal,azOff[i])==0 ) return 1;
  }
  return 0;
}

/*
** Swap the g.db and g.dbConfig connections so that the various db_* routines
** work on the ~/.fossil database instead of on the repository database.
................................................................................
  db_begin_transaction();
  if( globalFlag ){
    db_swap_connections();
    db_multi_exec("REPLACE INTO global_config(name,value) VALUES(%Q,%Q)",
                   zName, zValue);
    db_swap_connections();
  }else{
    db_multi_exec("REPLACE INTO config(name,value) VALUES(%Q,%Q)",
                   zName, zValue);
  }
  if( globalFlag && g.repositoryOpen ){
    db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
  }
  db_end_transaction(0);
}
................................................................................
void db_set_int(const char *zName, int value, int globalFlag){
  if( globalFlag ){
    db_swap_connections();
    db_multi_exec("REPLACE INTO global_config(name,value) VALUES(%Q,%d)",
                  zName, value);
    db_swap_connections();
  }else{
    db_multi_exec("REPLACE INTO config(name,value) VALUES(%Q,%d)",
                  zName, value);
  }
  if( globalFlag && g.repositoryOpen ){
    db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
  }
}
int db_get_boolean(const char *zName, int dflt){
................................................................................
  db_swap_connections();
  blob_reset(&full);
}

/*
** COMMAND: open
**
** Usage: %fossil open FILENAME ?VERSION? ?--keep?
**
** Open a connection to the local repository in FILENAME.  A checkout
** for the repository is created with its root at the working directory.
** If VERSION is specified then that version is checked out.  Otherwise
** the latest version is checked out.  No files other than "manifest"
** and "manifest.uuid" are modified if the --keep option is present.
**
** See also the "close" command.
*/
void cmd_open(void){
  Blob path;
  int vid;
  int keepFlag;

  static char *azNewArgv[] = { 0, "checkout", "--prompt", "--latest", 0, 0 };

  url_proxy_options();
  keepFlag = find_option("keep",0,0)!=0;

  if( g.argc!=3 && g.argc!=4 ){
    usage("REPOSITORY-FILENAME ?VERSION?");
  }
  if( db_open_local() ){
    fossil_panic("already within an open tree rooted at %s", g.zLocalRoot);
  }
  file_canonical_name(g.argv[2], &path);
  db_open_repository(blob_str(&path));
  db_init_database("./_FOSSIL_", zLocalSchema, (char*)0);

  db_open_local();
  db_lset("repository", blob_str(&path));
  db_record_repository_filename(blob_str(&path));
  vid = db_int(0, "SELECT pid FROM plink y"
                  " WHERE NOT EXISTS(SELECT 1 FROM plink x WHERE x.cid=y.pid)");
  if( vid==0 ){
    db_lset_int("checkout", 1);
  }else{
    char **oldArgv = g.argv;
    int oldArgc = g.argc;
    db_lset_int("checkout", vid);
    azNewArgv[0] = g.argv[0];
    g.argv = azNewArgv;
    g.argc = 4;
    if( oldArgc==4 ){
      azNewArgv[g.argc-1] = oldArgv[3];


    }
    if( keepFlag ){
      azNewArgv[g.argc++] = "--keep";
    }
    checkout_cmd();
    g.argc = 2;
    info_cmd();
................................................................................
  }else{
    db_prepare(&q,
      "SELECT '(global)', value FROM global_config WHERE name=%Q",
      zName
    );
  }
  if( db_step(&q)==SQLITE_ROW ){
    printf("%-20s %-8s %s\n", zName, db_column_text(&q, 0),
        db_column_text(&q, 1));
  }else{
    printf("%-20s\n", zName);
  }
  db_finalize(&q);
}


/*
** define all settings, which can be controlled via the set/unset
................................................................................
  char const *name;     /* Name of the setting */
  char const *var;      /* Internal variable name used by db_set() */
  int width;            /* Width of display.  0 for boolean values */
  char const *def;      /* Default value */
};
#endif /* INTERFACE */
struct stControlSettings const ctrlSettings[] = {

  { "auto-captcha",  "autocaptcha",    0, "on"                  },
  { "auto-shun",     0,                0, "on"                  },
  { "autosync",      0,                0, "on"                  },
  { "binary-glob",   0,               32, ""                    },
  { "clearsign",     0,                0, "off"                 },


  { "diff-command",  0,               16, ""                    },
  { "dont-push",     0,                0, "off"                 },
  { "editor",        0,               16, ""                    },
  { "gdiff-command", 0,               16, "gdiff"               },


  { "ignore-glob",   0,               40, ""                    },
  { "http-port",     0,               16, "8080"                },
  { "localauth",     0,                0, "off"                 },

  { "manifest",      0,                0, "off"                 },

  { "mtime-changes", 0,                0, "on"                  },
  { "pgp-command",   0,               32, "gpg --clearsign -o " },
  { "proxy",         0,               32, "off"                 },
  { "repo-cksum",    0,                0, "on"                  },

  { "ssh-command",   0,               32, ""                    },
  { "web-browser",   0,               32, ""                    },
  { 0,0,0,0 }
};

/*
** COMMAND: settings
** COMMAND: unset

** %fossil settings ?PROPERTY? ?VALUE? ?-global?
** %fossil unset PROPERTY ?-global?
**
** The "settings" command with no arguments lists all properties and their
** values.  With just a property name it shows the value of that property.
** With a value argument it changes the property for the current repository.
**
................................................................................
**    binary-glob      The VALUE is a comma-separated list of GLOB patterns
**                     that should be treated as binary files for merging
**                     purposes.  Example:   *.xml
**
**    clearsign        When enabled, fossil will attempt to sign all commits
**                     with gpg.  When disabled (the default), commits will
**                     be unsigned.  Default: off








**
**    diff-command     External command to run when performing a diff.
**                     If undefined, the internal text diff will be used.
**
**    dont-push        Prevent this repository from pushing from client to
**                     server.  Useful when setting up a private branch.
**
**    editor           Text editor command used for check-in comments.
**
**    gdiff-command    External command to run when performing a graphical
**                     diff. If undefined, text diff will be used.
**






**    http-port        The TCP/IP port number to use by the "server"
**                     and "ui" commands.  Default: 8080



**
**    ignore-glob      The VALUE is a comma-separated list of GLOB patterns
**                     specifying files that the "extra" command will ignore.
**                     Example:  *.o,*.obj,*.exe
**
**    localauth        If enabled, require that HTTP connections from
**                     127.0.0.1 be authenticated by password.  If
**                     false, all HTTP requests from localhost have
**                     unrestricted access to the repository.


**
**    manifest         If enabled, automatically create files "manifest" and
**                     "manifest.uuid" in every checkout.  The SQLite and
**                     Fossil repositories both require this.  Default: off.



**
**    mtime-changes    Use file modification times (mtimes) to detect when
**                     files have been modified.  (Default "on".)
**
**    pgp-command      Command used to clear-sign manifests at check-in.
**                     The default is "gpg --clearsign -o ".
**
................................................................................
**                     If the http_proxy environment variable is undefined
**                     then a direct HTTP connection is used.
**
**    repo-cksum       Compute checksums over all files in each checkout
**                     as a double-check of correctness.  Defaults to "on".
**                     Disable on large repositories for a performance
**                     improvement.





**
**    ssh-command      Command used to talk to a remote machine with
**                     the "ssh://" protocol.
**
**    web-browser      A shell command used to launch your preferred
**                     web browser when given a URL as an argument.
**                     Defaults to "start" on windows, "open" on Mac,
................................................................................
**                     and "firefox" on Unix.
*/
void setting_cmd(void){
  int i;
  int globalFlag = find_option("global","g",0)!=0;
  int unsetFlag = g.argv[1][0]=='u';
  db_open_config(1);

  db_find_and_open_repository(0);

  if( !g.repositoryOpen ){
    globalFlag = 1;
  }
  if( unsetFlag && g.argc!=3 ){
    usage("PROPERTY ?-global?");
  }
  if( g.argc==2 ){
................................................................................
    int n = strlen(zName);
    for(i=0; ctrlSettings[i].name; i++){
      if( strncmp(ctrlSettings[i].name, zName, n)==0 ) break;
    }
    if( !ctrlSettings[i].name ){
      fossil_fatal("no such setting: %s", zName);
    }
    isManifest = strcmp(ctrlSettings[i].name, "manifest")==0;
    if( isManifest && globalFlag ){
      fossil_fatal("cannot set 'manifest' globally");
    }
    if( unsetFlag ){
      db_unset(ctrlSettings[i].name, globalFlag);
    }else if( g.argc==4 ){
      db_set(ctrlSettings[i].name, g.argv[3], globalFlag);
................................................................................
** Print the approximate span of time from now to TIMESTAMP.
*/
void test_timespan_cmd(void){
  double rDiff;
  if( g.argc!=3 ) usage("TIMESTAMP");
  sqlite3_open(":memory:", &g.db);  
  rDiff = db_double(0.0, "SELECT julianday('now') - julianday(%Q)", g.argv[2]);
  printf("Time differences: %s\n", db_timespan_name(rDiff));
  sqlite3_close(g.db);
  g.db = 0;
}

#if ! defined(_WIN32)
#  include <pwd.h>
#endif
#include <sqlite3.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include "db.h"

#if INTERFACE
/*
** An single SQL statement is represented as an instance of the following
** structure.
*/
................................................................................
  }
  if( g.cgiOutput ){
    g.cgiOutput = 0;
    cgi_printf("<h1>Database Error</h1>\n"
               "<pre>%h</pre><p>%s</p>", z, zRebuildMsg);
    cgi_reply();
  }else{
    fprintf(stderr, "%s: %s\n\n%s", fossil_nameofexe(), z, zRebuildMsg);
  }
  db_force_rollback();
  fossil_exit(1);
}

static int nBegin = 0;      /* Nesting depth of BEGIN */

static int doRollback = 0;  /* True to force a rollback */
static int nCommitHook = 0; /* Number of commit hooks */
static struct sCommitHook {
  int (*xHook)(void);  /* Functions to call at db_end_transaction() */
  int sequence;        /* Call functions in sequence order */
} aHook[5];
static Stmt *pAllStmt = 0;  /* List of all unfinalized statements */
static int nPrepare = 0;    /* Number of calls to sqlite3_prepare() */
static int nDeleteOnFail = 0;  /* Number of entries in azDeleteOnFail[] */
static char *azDeleteOnFail[3]; /* Files to delete on a failure */


/*
** Arrange for the given file to be deleted on a failure.
*/
void db_delete_on_failure(const char *zFilename){
  assert( nDeleteOnFail<count(azDeleteOnFail) );
  azDeleteOnFail[nDeleteOnFail++] = fossil_strdup(zFilename);
}

/*
** This routine is called by the SQLite commit-hook mechanism
** just prior to each commit.  All this routine does is verify
** that nBegin really is zero.  That insures that transactions
** cannot commit by any means other than by calling db_end_transaction()
** below.
................................................................................
void db_end_transaction(int rollbackFlag){
  if( g.db==0 ) return;
  if( nBegin<=0 ) return;
  if( rollbackFlag ) doRollback = 1;
  nBegin--;
  if( nBegin==0 ){
    int i;
    if( doRollback==0 ) leaf_do_pending_checks();
    for(i=0; doRollback==0 && i<nCommitHook; i++){
      doRollback |= aHook[i].xHook();
    }
    while( pAllStmt ){
      db_finalize(pAllStmt);
    }
    db_multi_exec(doRollback ? "ROLLBACK" : "COMMIT");
    doRollback = 0;
  }
}

/*
** Force a rollback and shutdown the database
*/
void db_force_rollback(void){
  int i;
  static int busy = 0;
  if( busy || g.db==0 ) return;
  busy = 1;
  undo_rollback();
  while( pAllStmt ){
    db_finalize(pAllStmt);
  }
  if( nBegin ){
    sqlite3_exec(g.db, "ROLLBACK", 0, 0, 0);
    nBegin = 0;



  }

  busy = 0;
  db_close(0);
  for(i=0; i<nDeleteOnFail; i++){
    unlink(azDeleteOnFail[i]);
  }
}

/*
** Install a commit hook.  Hooks are installed in sequence order.
** It is an error to install the same commit hook more than once.
**
** Each commit hook is called (in order of accending sequence) at
................................................................................
}

/*
** Prepare a Stmt.  Assume that the Stmt is previously uninitialized.
** If the input string contains multiple SQL statements, only the first
** one is processed.  All statements beyond the first are silently ignored.
*/
int db_vprepare(Stmt *pStmt, int errOk, const char *zFormat, va_list ap){
  int rc;
  char *zSql;
  blob_zero(&pStmt->sql);
  blob_vappendf(&pStmt->sql, zFormat, ap);
  va_end(ap);
  zSql = blob_str(&pStmt->sql);
  nPrepare++;
  rc = sqlite3_prepare_v2(g.db, zSql, -1, &pStmt->pStmt, 0);
  if( rc!=0 && !errOk ){
    db_err("%s\n%s", sqlite3_errmsg(g.db), zSql);
  }
  pStmt->pNext = pStmt->pPrev = 0;
  pStmt->nStep = 0;
  return rc;
}
int db_prepare(Stmt *pStmt, const char *zFormat, ...){
  int rc;
  va_list ap;
  va_start(ap, zFormat);
  rc = db_vprepare(pStmt, 0, zFormat, ap);
  va_end(ap);
  return rc;
}
int db_prepare_ignore_error(Stmt *pStmt, const char *zFormat, ...){
  int rc;
  va_list ap;
  va_start(ap, zFormat);
  rc = db_vprepare(pStmt, 1, zFormat, ap);
  va_end(ap);
  return rc;
}
int db_static_prepare(Stmt *pStmt, const char *zFormat, ...){
  int rc = SQLITE_OK;
  if( blob_size(&pStmt->sql)==0 ){
    va_list ap;
    va_start(ap, zFormat);
    rc = db_vprepare(pStmt, 0, zFormat, ap);
    pStmt->pNext = pAllStmt;
    pStmt->pPrev = 0;
    if( pAllStmt ) pAllStmt->pPrev = pStmt;
    pAllStmt = pStmt;
    va_end(ap);
  }
  return rc;
................................................................................
}
double db_column_double(Stmt *pStmt, int N){
  return sqlite3_column_double(pStmt->pStmt, N);
}
const char *db_column_text(Stmt *pStmt, int N){
  return (char*)sqlite3_column_text(pStmt->pStmt, N);
}
const char *db_column_raw(Stmt *pStmt, int N){
  return (const char*)sqlite3_column_blob(pStmt->pStmt, N);
}
const char *db_column_name(Stmt *pStmt, int N){
  return (char*)sqlite3_column_name(pStmt->pStmt, N);
}
int db_column_count(Stmt *pStmt){
  return sqlite3_column_count(pStmt->pStmt);
}
char *db_column_malloc(Stmt *pStmt, int N){
................................................................................
** Execute a query and return a single integer value.
*/
i64 db_int64(i64 iDflt, const char *zSql, ...){
  va_list ap;
  Stmt s;
  i64 rc;
  va_start(ap, zSql);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    rc = iDflt;
  }else{
    rc = db_column_int64(&s, 0);
  }
  db_finalize(&s);
................................................................................
  return rc;
}
int db_int(int iDflt, const char *zSql, ...){
  va_list ap;
  Stmt s;
  int rc;
  va_start(ap, zSql);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    rc = iDflt;
  }else{
    rc = db_column_int(&s, 0);
  }
  db_finalize(&s);
................................................................................
** FALSE if the query result would be an empty set.
*/
int db_exists(const char *zSql, ...){
  va_list ap;
  Stmt s;
  int rc;
  va_start(ap, zSql);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    rc = 0;
  }else{
    rc = 1;
  }
  db_finalize(&s);
................................................................................
** Execute a query and return a floating-point value.
*/
double db_double(double rDflt, const char *zSql, ...){
  va_list ap;
  Stmt s;
  double r;
  va_start(ap, zSql);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    r = rDflt;
  }else{
    r = db_column_double(&s, 0);
  }
  db_finalize(&s);
................................................................................
** Execute a query and append the first column of the first row
** of the result set to blob given in the first argument.
*/
void db_blob(Blob *pResult, const char *zSql, ...){
  va_list ap;
  Stmt s;
  va_start(ap, zSql);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)==SQLITE_ROW ){
    blob_append(pResult, sqlite3_column_blob(s.pStmt, 0),
                         sqlite3_column_bytes(s.pStmt, 0));
  }
  db_finalize(&s);
}
................................................................................
** zDefault instead.
*/
char *db_text(char *zDefault, const char *zSql, ...){
  va_list ap;
  Stmt s;
  char *z;
  va_start(ap, zSql);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)==SQLITE_ROW ){
    z = mprintf("%s", sqlite3_column_text(s.pStmt, 0));
  }else if( zDefault ){
    z = mprintf("%s", zDefault);
  }else{
    z = 0;
  }
  db_finalize(&s);
  return z;
}





/*
** Initialize a new database file with the given schema.  If anything
** goes wrong, call db_err() to exit.
*/
void db_init_database(
  const char *zFileName,   /* Name of database file to create */
  const char *zSchema,     /* First part of schema */
................................................................................
  ...                      /* Additional SQL to run.  Terminate with NULL. */
){
  sqlite3 *db;
  int rc;
  const char *zSql;
  va_list ap;




  rc = sqlite3_open(zFileName, &db);
  if( rc!=SQLITE_OK ){
    db_err(sqlite3_errmsg(db));
  }
  sqlite3_busy_timeout(db, 5000);
  sqlite3_exec(db, "BEGIN EXCLUSIVE", 0, 0, 0);
  rc = sqlite3_exec(db, zSchema, 0, 0, 0);
................................................................................
      db_err(sqlite3_errmsg(db));
    }
  }
  va_end(ap);
  sqlite3_exec(db, "COMMIT", 0, 0, 0);
  sqlite3_close(db);
}

/*
** Function to return the number of seconds since 1970.  This is
** the same as strftime('%s','now') but is more compact.
*/
static void db_now_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  sqlite3_result_int64(context, time(0));
}


/*
** Open a database file.  Return a pointer to the new database
** connection.  An error results in process abort.
*/
static sqlite3 *openDatabase(const char *zDbName){
  int rc;
  const char *zVfs;
  sqlite3 *db;

  zVfs = getenv("FOSSIL_VFS");



  rc = sqlite3_open_v2(
       zDbName, &db,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       zVfs
  );
  if( rc!=SQLITE_OK ){
    db_err(sqlite3_errmsg(db));
  }
  sqlite3_busy_timeout(db, 5000); 
  sqlite3_wal_autocheckpoint(db, 1);  /* Set to checkpoint frequently */
  sqlite3_create_function(db, "now", 0, SQLITE_ANY, 0, db_now_function, 0, 0);
  return db;
}


/*
** zDbName is the name of a database file.  If no other database
** file is open, then open this one.  If another database file is
** already open, then attach zDbName using the name zLabel.
*/
static void db_open_or_attach(const char *zDbName, const char *zLabel){
  if( !g.db ){
    g.db = openDatabase(zDbName);
    g.zMainDbType = zLabel;
    db_connection_init();
  }else{



    db_multi_exec("ATTACH DATABASE %Q AS %s", zDbName, zLabel);

  }
}

/*
** Open the user database in "~/.fossil".  Create the database anew if
** it does not already exist.
**
................................................................................
  const char *zHome;
  if( g.configOpen ) return;
#if defined(_WIN32)
  zHome = getenv("LOCALAPPDATA");
  if( zHome==0 ){
    zHome = getenv("APPDATA");
    if( zHome==0 ){
      char *zDrive = getenv("HOMEDRIVE");
      zHome = getenv("HOMEPATH");
      if( zDrive && zHome ) zHome = mprintf("%s%s", zDrive, zHome);
    }
  }
  if( zHome==0 ){
    fossil_fatal("cannot locate home directory - "
                "please set the LOCALAPPDATA or APPDATA or HOMEPATH "
                "environment variables");
  }
#else
  zHome = getenv("HOME");
  if( zHome==0 ){
    fossil_fatal("cannot locate home directory - "
                 "please set the HOME environment variable");
  }
................................................................................
  if( useAttach ){
    db_open_or_attach(zDbName, "configdb");
    g.dbConfig = 0;
  }else{
    g.dbConfig = openDatabase(zDbName);
  }
  g.configOpen = 1;
  free(zDbName);
}

/*
** If zDbName is a valid local database file, open it and return
** true.  If it is not a valid local database file, return 0.
*/
static int isValidLocalDb(const char *zDbName){
................................................................................
  db_open_repository(0);

  /* If the "isexe" column is missing from the vfile table, then
  ** add it now.   This code added on 2010-03-06.  After all users have
  ** upgraded, this code can be safely deleted. 
  */
  rc = sqlite3_prepare(g.db, "SELECT isexe FROM vfile", -1, &pStmt, 0);
  nPrepare++;
  sqlite3_finalize(pStmt);
  if( rc==SQLITE_ERROR ){
    sqlite3_exec(g.db, "ALTER TABLE vfile ADD COLUMN isexe BOOLEAN", 0, 0, 0);
  }

#if 0
  /* If the "mtime" column is missing from the vfile table, then
................................................................................
  n = strlen(zPwd);
  zPwdConv = mprintf("%/", zPwd);
  strncpy(zPwd, zPwdConv, 2000-20);
  free(zPwdConv);
  while( n>0 ){
    if( access(zPwd, W_OK) ) break;
    for(i=0; i<sizeof(aDbName)/sizeof(aDbName[0]); i++){
      sqlite3_snprintf(sizeof(zPwd)-n, &zPwd[n], "%s", aDbName[i]);
      if( isValidLocalDb(zPwd) ){
        /* Found a valid checkout database file */
        zPwd[n] = 0;
        while( n>1 && zPwd[n-1]=='/' ){
          n--;
          zPwd[n] = 0;
        }
................................................................................
    }
  }
  db_open_or_attach(zDbName, "repository");
  g.repositoryOpen = 1;
  g.zRepositoryName = mprintf("%s", zDbName);
}

/*
** Flags for the db_find_and_open_repository() function.
*/
#if INTERFACE
#define OPEN_OK_NOT_FOUND    0x001      /* Do not error out if not found */
#define OPEN_ANY_SCHEMA      0x002      /* Do not error if schema is wrong */
#endif

/*
** Try to find the repository and open it.  Use the -R or --repository
** option to locate the repository.  If no such option is available, then
** use the repository of the open checkout if there is one.
**
** Error out if the repository cannot be opened.
*/
void db_find_and_open_repository(int bFlags, int nArgUsed){
  const char *zRep = find_option("repository", "R", 1);
  if( zRep==0 && nArgUsed && g.argc==nArgUsed+1 ){
    zRep = g.argv[nArgUsed];
  }
  if( zRep==0 ){
    if( db_open_local()==0 ){
      goto rep_not_found;
    }
    zRep = db_lget("repository", 0);
    if( zRep==0 ){
      goto rep_not_found;
    }
  }
  db_open_repository(zRep);
  if( g.repositoryOpen ){
    if( (bFlags & OPEN_ANY_SCHEMA)==0 ) db_verify_schema();
    return;
  }
rep_not_found:
  if( (bFlags & OPEN_OK_NOT_FOUND)==0 ){
    fossil_fatal("use --repository or -R to specify the repository database");
  }
}

/*
** Return the name of the database "localdb", "configdb", or "repository".
*/
const char *db_name(const char *zDb){
  assert( strcmp(zDb,"localdb")==0
       || strcmp(zDb,"configdb")==0
       || strcmp(zDb,"repository")==0 );
  if( strcmp(zDb, g.zMainDbType)==0 ) zDb = "main";
  return zDb;
}

/*
** Return TRUE if the schema is out-of-date
*/
int db_schema_is_outofdate(void){
  return db_exists("SELECT 1 FROM config"
                   " WHERE name='aux-schema'"
                   "   AND value<>'%s'", AUX_SCHEMA);
}

/*
** Verify that the repository schema is correct.  If it is not correct,
** issue a fatal error and die.
*/
void db_verify_schema(void){
  if( db_schema_is_outofdate() ){
    fossil_warning("incorrect repository schema version");
    fossil_warning("your repository has schema version \"%s\" "
          "but this binary expects version \"%s\"",
          db_get("aux-schema",0), AUX_SCHEMA);
    fossil_fatal("run \"fossil rebuild\" to fix this problem");
  }
}


/*
** COMMAND: test-move-repository
**
** Usage: %fossil test-move-repository PATHNAME
**
** Change the location of the repository database on a local check-out.
................................................................................
  file_canonical_name(g.argv[2], &repo);
  zRepo = blob_str(&repo);
  if( access(zRepo, 0) ){
    fossil_fatal("no such file: %s", zRepo);
  }
  db_open_or_attach(zRepo, "test_repo");
  db_lset("repository", blob_str(&repo));
  db_close(1);
}


/*
** Open the local database.  If unable, exit with an error.
*/
void db_must_be_within_tree(void){
  if( db_open_local()==0 ){
    fossil_fatal("not within an open checkout");
  }
  db_open_repository(0);
  db_verify_schema();
}

/*
** Close the database connection.
**
** Check for unfinalized statements and report errors if the reportErrors
** argument is true.  Ignore unfinalized statements when false.
*/
void db_close(int reportErrors){
  sqlite3_stmt *pStmt;
  if( g.db==0 ) return;
  if( g.fSqlStats ){
    int cur, hiwtr;
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_LOOKASIDE_USED, &cur, &hiwtr, 0);
    fprintf(stderr, "-- LOOKASIDE_USED         %10d %10d\n", cur, hiwtr);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_LOOKASIDE_HIT, &cur, &hiwtr, 0);
    fprintf(stderr, "-- LOOKASIDE_HIT                     %10d\n", hiwtr);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE, &cur,&hiwtr,0);
    fprintf(stderr, "-- LOOKASIDE_MISS_SIZE               %10d\n", hiwtr);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL, &cur,&hiwtr,0);
    fprintf(stderr, "-- LOOKASIDE_MISS_FULL               %10d\n", hiwtr);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_CACHE_USED, &cur, &hiwtr, 0);
    fprintf(stderr, "-- CACHE_USED             %10d\n", cur);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_SCHEMA_USED, &cur, &hiwtr, 0);
    fprintf(stderr, "-- SCHEMA_USED            %10d\n", cur);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_STMT_USED, &cur, &hiwtr, 0);
    fprintf(stderr, "-- STMT_USED              %10d\n", cur);
    sqlite3_status(SQLITE_STATUS_MEMORY_USED, &cur, &hiwtr, 0);
    fprintf(stderr, "-- MEMORY_USED            %10d %10d\n", cur, hiwtr);
    sqlite3_status(SQLITE_STATUS_MALLOC_SIZE, &cur, &hiwtr, 0);
    fprintf(stderr, "-- MALLOC_SIZE                       %10d\n", hiwtr);
    sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &cur, &hiwtr, 0);
    fprintf(stderr, "-- MALLOC_COUNT           %10d %10d\n", cur, hiwtr);
    sqlite3_status(SQLITE_STATUS_PAGECACHE_OVERFLOW, &cur, &hiwtr, 0);
    fprintf(stderr, "-- PCACHE_OVFLOW          %10d %10d\n", cur, hiwtr);
    fprintf(stderr, "-- prepared statements    %10d\n", nPrepare);
  }
  while( pAllStmt ){
    db_finalize(pAllStmt);
  }
  db_end_transaction(1);
  pStmt = 0;
  if( reportErrors ){
    while( (pStmt = sqlite3_next_stmt(g.db, pStmt))!=0 ){
      fossil_warning("unfinalized SQL statement: [%s]", sqlite3_sql(pStmt));
    }
  }
  g.repositoryOpen = 0;
  g.localOpen = 0;
  g.configOpen = 0;
  sqlite3_wal_checkpoint(g.db, 0);
  sqlite3_close(g.db);
  g.db = 0;
................................................................................
void db_create_repository(const char *zFilename){
  db_init_database(
     zFilename,
     zRepositorySchema1,
     zRepositorySchema2,
     (char*)0
  );
  db_delete_on_failure(zFilename);
}

/*
** Create the default user accounts in the USER table.
*/
void db_create_default_users(int setupUserOnly, const char *zDefaultUser){
  const char *zUser;
................................................................................
  db_multi_exec(
     "INSERT INTO user(login, pw, cap, info)"
     "VALUES(%Q,lower(hex(randomblob(3))),'s','')", zUser
  );
  if( !setupUserOnly ){
    db_multi_exec(
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('anonymous',hex(randomblob(8)),'hmncz','Anon');"
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('nobody','','gjor','Nobody');"
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('developer','','dei','Dev');"
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('reader','','kptw','Reader');"
    );
  }
}
................................................................................
  Blob hash;
  Blob manifest;

  db_set("content-schema", CONTENT_SCHEMA, 0);
  db_set("aux-schema", AUX_SCHEMA, 0);
  if( makeServerCodes ){
    db_multi_exec(
      "INSERT INTO config(name,value,mtime)"
      " VALUES('server-code', lower(hex(randomblob(20))),now());"
      "INSERT INTO config(name,value,mtime)"
      " VALUES('project-code', lower(hex(randomblob(20))),now());"
    );
  }
  if( !db_is_global("autosync") ) db_set_int("autosync", 1, 0);
  if( !db_is_global("localauth") ) db_set_int("localauth", 0, 0);
  db_create_default_users(0, zDefaultUser);
  user_select();

................................................................................
    blob_appendf(&manifest, "R %s\n", md5sum_finish(0));
    blob_appendf(&manifest, "T *branch * trunk\n");
    blob_appendf(&manifest, "T *sym-trunk *\n");
    blob_appendf(&manifest, "U %F\n", g.zLogin);
    md5sum_blob(&manifest, &hash);
    blob_appendf(&manifest, "Z %b\n", &hash);
    blob_reset(&hash);
    rid = content_put(&manifest);
    manifest_crosslink(rid, &manifest);
  }
}

/*
** COMMAND: new
** COMMAND: init
................................................................................
  }
  db_create_repository(g.argv[2]);
  db_open_repository(g.argv[2]);
  db_open_config(0);
  db_begin_transaction();
  db_initial_setup(zDate, zDefaultUser, 1);
  db_end_transaction(0);
  fossil_print("project-id: %s\n", db_get("project-code", 0));
  fossil_print("server-id:  %s\n", db_get("server-code", 0));
  zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
  fossil_print("admin-user: %s (initial password is \"%s\")\n", 
               g.zLogin, zPassword);
}

/*
** SQL functions for debugging.
**
** The print() function writes its arguments on stdout, but only
** if the -sqlprint command-line option is turned on.
................................................................................
  int argc,
  sqlite3_value **argv
){
  int i;
  if( g.fSqlPrint ){
    for(i=0; i<argc; i++){
      char c = i==argc-1 ? '\n' : ' ';
      fossil_print("%s%c", sqlite3_value_text(argv[i]), c);
    }
  }
}
static void db_sql_trace(void *notUsed, const char *zSql){
  int n = strlen(zSql);
  fprintf(stderr, "%s%s\n", zSql, (n>0 && zSql[n-1]==';') ? "" : ";");
}
................................................................................
  Blob out;
  if( n==40 && validate16(zContent, n) ){
    memcpy(zHash, zContent, n);
    zHash[n] = 0;
  }else{
    sha1sum_step_text(zContent, n);
    sha1sum_finish(&out);
    sqlite3_snprintf(sizeof(zHash), zHash, "%s", blob_str(&out));
    blob_reset(&out);
    db_multi_exec(
       "INSERT OR IGNORE INTO concealed(hash,content,mtime)"
       " VALUES(%Q,%#Q,now())",
       zHash, n, zContent
    );
  }
  return zHash;
}

/*
................................................................................
/*
** Return true if the string zVal represents "true" (or "false").
*/
int is_truth(const char *zVal){
  static const char *azOn[] = { "on", "yes", "true", "1" };
  int i;
  for(i=0; i<sizeof(azOn)/sizeof(azOn[0]); i++){
    if( fossil_strcmp(zVal,azOn[i])==0 ) return 1;
  }
  return 0;
}
int is_false(const char *zVal){
  static const char *azOff[] = { "off", "no", "false", "0" };
  int i;
  for(i=0; i<sizeof(azOff)/sizeof(azOff[0]); i++){
    if( fossil_strcmp(zVal,azOff[i])==0 ) return 1;
  }
  return 0;
}

/*
** Swap the g.db and g.dbConfig connections so that the various db_* routines
** work on the ~/.fossil database instead of on the repository database.
................................................................................
  db_begin_transaction();
  if( globalFlag ){
    db_swap_connections();
    db_multi_exec("REPLACE INTO global_config(name,value) VALUES(%Q,%Q)",
                   zName, zValue);
    db_swap_connections();
  }else{
    db_multi_exec("REPLACE INTO config(name,value,mtime) VALUES(%Q,%Q,now())",
                   zName, zValue);
  }
  if( globalFlag && g.repositoryOpen ){
    db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
  }
  db_end_transaction(0);
}
................................................................................
void db_set_int(const char *zName, int value, int globalFlag){
  if( globalFlag ){
    db_swap_connections();
    db_multi_exec("REPLACE INTO global_config(name,value) VALUES(%Q,%d)",
                  zName, value);
    db_swap_connections();
  }else{
    db_multi_exec("REPLACE INTO config(name,value,mtime) VALUES(%Q,%d,now())",
                  zName, value);
  }
  if( globalFlag && g.repositoryOpen ){
    db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
  }
}
int db_get_boolean(const char *zName, int dflt){
................................................................................
  db_swap_connections();
  blob_reset(&full);
}

/*
** COMMAND: open
**
** Usage: %fossil open FILENAME ?VERSION? ?--keep? ?--nested?
**
** Open a connection to the local repository in FILENAME.  A checkout
** for the repository is created with its root at the working directory.
** If VERSION is specified then that version is checked out.  Otherwise
** the latest version is checked out.  No files other than "manifest"
** and "manifest.uuid" are modified if the --keep option is present.
**
** See also the "close" command.
*/
void cmd_open(void){
  Blob path;
  int vid;
  int keepFlag;
  int allowNested;
  static char *azNewArgv[] = { 0, "checkout", "--prompt", 0, 0, 0 };

  url_proxy_options();
  keepFlag = find_option("keep",0,0)!=0;
  allowNested = find_option("nested",0,0)!=0;
  if( g.argc!=3 && g.argc!=4 ){
    usage("REPOSITORY-FILENAME ?VERSION?");
  }
  if( !allowNested && db_open_local() ){
    fossil_panic("already within an open tree rooted at %s", g.zLocalRoot);
  }
  file_canonical_name(g.argv[2], &path);
  db_open_repository(blob_str(&path));
  db_init_database("./_FOSSIL_", zLocalSchema, (char*)0);
  db_delete_on_failure("./_FOSSIL_");
  db_open_local();
  db_lset("repository", blob_str(&path));
  db_record_repository_filename(blob_str(&path));
  vid = db_int(0, "SELECT pid FROM plink y"
                  " WHERE NOT EXISTS(SELECT 1 FROM plink x WHERE x.cid=y.pid)");
  if( vid==0 ){
    db_lset_int("checkout", 1);
  }else{
    char **oldArgv = g.argv;
    int oldArgc = g.argc;
    db_lset_int("checkout", vid);
    azNewArgv[0] = g.argv[0];
    g.argv = azNewArgv;
    g.argc = 3;
    if( oldArgc==4 ){
      azNewArgv[g.argc-1] = oldArgv[3];
    }else{
      azNewArgv[g.argc-1] = db_get("main-branch", "trunk");
    }
    if( keepFlag ){
      azNewArgv[g.argc++] = "--keep";
    }
    checkout_cmd();
    g.argc = 2;
    info_cmd();
................................................................................
  }else{
    db_prepare(&q,
      "SELECT '(global)', value FROM global_config WHERE name=%Q",
      zName
    );
  }
  if( db_step(&q)==SQLITE_ROW ){
    fossil_print("%-20s %-8s %s\n", zName, db_column_text(&q, 0),
        db_column_text(&q, 1));
  }else{
    fossil_print("%-20s\n", zName);
  }
  db_finalize(&q);
}


/*
** define all settings, which can be controlled via the set/unset
................................................................................
  char const *name;     /* Name of the setting */
  char const *var;      /* Internal variable name used by db_set() */
  int width;            /* Width of display.  0 for boolean values */
  char const *def;      /* Default value */
};
#endif /* INTERFACE */
struct stControlSettings const ctrlSettings[] = {
  { "access-log",    0,                0, "off"                 },
  { "auto-captcha",  "autocaptcha",    0, "on"                  },
  { "auto-shun",     0,                0, "on"                  },
  { "autosync",      0,                0, "on"                  },
  { "binary-glob",   0,               32, ""                    },
  { "clearsign",     0,                0, "off"                 },
  { "crnl-glob",     0,               16, ""                    },
  { "default-perms", 0,               16, "u"                   },
  { "diff-command",  0,               16, ""                    },
  { "dont-push",     0,                0, "off"                 },
  { "editor",        0,               16, ""                    },
  { "gdiff-command", 0,               16, "gdiff"               },
  { "gmerge-command",0,               40, ""                    },
  { "https-login",   0,                0, "off"                 },
  { "ignore-glob",   0,               40, ""                    },
  { "http-port",     0,               16, "8080"                },
  { "localauth",     0,                0, "off"                 },
  { "main-branch",   0,               40, "trunk"               },
  { "manifest",      0,                0, "off"                 },
  { "max-upload",    0,               25, "250000"              },
  { "mtime-changes", 0,                0, "on"                  },
  { "pgp-command",   0,               32, "gpg --clearsign -o " },
  { "proxy",         0,               32, "off"                 },
  { "repo-cksum",    0,                0, "on"                  },
  { "self-register", 0,                0, "off"                 },
  { "ssh-command",   0,               32, ""                    },
  { "web-browser",   0,               32, ""                    },
  { 0,0,0,0 }
};

/*
** COMMAND: settings
** COMMAND: unset
**
** %fossil settings ?PROPERTY? ?VALUE? ?-global?
** %fossil unset PROPERTY ?-global?
**
** The "settings" command with no arguments lists all properties and their
** values.  With just a property name it shows the value of that property.
** With a value argument it changes the property for the current repository.
**
................................................................................
**    binary-glob      The VALUE is a comma-separated list of GLOB patterns
**                     that should be treated as binary files for merging
**                     purposes.  Example:   *.xml
**
**    clearsign        When enabled, fossil will attempt to sign all commits
**                     with gpg.  When disabled (the default), commits will
**                     be unsigned.  Default: off
**
**    crnl-glob        A comma-separated list of GLOB patterns for text files
**                     in which it is ok to have CR+NL line endings.
**                     Set to "*" to disable CR+NL checking.
**
**    default-perms    Permissions given automatically to new users.  For more
**                     information on permissions see Users page in Server
**                     Administration of the HTTP UI. Default: u.
**
**    diff-command     External command to run when performing a diff.
**                     If undefined, the internal text diff will be used.
**
**    dont-push        Prevent this repository from pushing from client to
**                     server.  Useful when setting up a private branch.
**
**    editor           Text editor command used for check-in comments.
**
**    gdiff-command    External command to run when performing a graphical
**                     diff. If undefined, text diff will be used.
**
**    gmerge-command   A graphical merge conflict resolver command operating
**                     on four files.
**                     Ex: kdiff3 "%baseline" "%original" "%merge" -o "%output"
**                     Ex: xxdiff "%original" "%baseline" "%merge" -M "%output"
**                     Ex: meld "%baseline" "%original" "%merge" "%output"
**
**    http-port        The TCP/IP port number to use by the "server"
**                     and "ui" commands.  Default: 8080
**
**    https-login      Send login creditials using HTTPS instead of HTTP
**                     even if the login page request came via HTTP.
**
**    ignore-glob      The VALUE is a comma-separated list of GLOB patterns
**                     specifying files that the "extra" command will ignore.
**                     Example:  *.o,*.obj,*.exe
**
**    localauth        If enabled, require that HTTP connections from
**                     127.0.0.1 be authenticated by password.  If
**                     false, all HTTP requests from localhost have
**                     unrestricted access to the repository.
**
**    main-branch      The primary branch for the project.  Default: trunk
**
**    manifest         If enabled, automatically create files "manifest" and
**                     "manifest.uuid" in every checkout.  The SQLite and
**                     Fossil repositories both require this.  Default: off.
**
**    max-upload       A limit on the size of uplink HTTP requests.  The
**                     default is 250000 bytes.
**
**    mtime-changes    Use file modification times (mtimes) to detect when
**                     files have been modified.  (Default "on".)
**
**    pgp-command      Command used to clear-sign manifests at check-in.
**                     The default is "gpg --clearsign -o ".
**
................................................................................
**                     If the http_proxy environment variable is undefined
**                     then a direct HTTP connection is used.
**
**    repo-cksum       Compute checksums over all files in each checkout
**                     as a double-check of correctness.  Defaults to "on".
**                     Disable on large repositories for a performance
**                     improvement.
**
**    self-register    Allow users to register themselves through the HTTP UI.
**                     This is useful if you want to see other names than
**                     "Anonymous" in e.g. ticketing system. On the other hand
**                     users can not be deleted. Default: off.
**
**    ssh-command      Command used to talk to a remote machine with
**                     the "ssh://" protocol.
**
**    web-browser      A shell command used to launch your preferred
**                     web browser when given a URL as an argument.
**                     Defaults to "start" on windows, "open" on Mac,
................................................................................
**                     and "firefox" on Unix.
*/
void setting_cmd(void){
  int i;
  int globalFlag = find_option("global","g",0)!=0;
  int unsetFlag = g.argv[1][0]=='u';
  db_open_config(1);
  if( !globalFlag ){
    db_find_and_open_repository(OPEN_ANY_SCHEMA | OPEN_OK_NOT_FOUND, 0);
  }
  if( !g.repositoryOpen ){
    globalFlag = 1;
  }
  if( unsetFlag && g.argc!=3 ){
    usage("PROPERTY ?-global?");
  }
  if( g.argc==2 ){
................................................................................
    int n = strlen(zName);
    for(i=0; ctrlSettings[i].name; i++){
      if( strncmp(ctrlSettings[i].name, zName, n)==0 ) break;
    }
    if( !ctrlSettings[i].name ){
      fossil_fatal("no such setting: %s", zName);
    }
    isManifest = fossil_strcmp(ctrlSettings[i].name, "manifest")==0;
    if( isManifest && globalFlag ){
      fossil_fatal("cannot set 'manifest' globally");
    }
    if( unsetFlag ){
      db_unset(ctrlSettings[i].name, globalFlag);
    }else if( g.argc==4 ){
      db_set(ctrlSettings[i].name, g.argv[3], globalFlag);
................................................................................
** Print the approximate span of time from now to TIMESTAMP.
*/
void test_timespan_cmd(void){
  double rDiff;
  if( g.argc!=3 ) usage("TIMESTAMP");
  sqlite3_open(":memory:", &g.db);  
  rDiff = db_double(0.0, "SELECT julianday('now') - julianday(%Q)", g.argv[2]);
  fossil_print("Time differences: %s\n", db_timespan_name(rDiff));
  sqlite3_close(g.db);
  g.db = 0;
}

          DEBUG2( printf("lastRead becomes %d\n", lastRead); )
        }
        bestCnt = 0;
        break;
      }

      /* If we reach this point, it means no match is found so far */
      if( base+i+NHASH>lenOut ){
        /* We have reached the end of the file and have not found any
        ** matches.  Do an "insert" for everything that does not match */
        putInt(lenOut-base, &zDelta);
        *(zDelta++) = ':';
        memcpy(zDelta, &zOut[base], lenOut-base);
        zDelta += lenOut-base;
        base = lenOut;
................................................................................
  while( *zDelta && lenDelta>0 ){
    unsigned int cnt, ofst;
    cnt = getInt(&zDelta, &lenDelta);
    switch( zDelta[0] ){
      case '@': {
        zDelta++; lenDelta--;
        ofst = getInt(&zDelta, &lenDelta);
        if( zDelta[0]!=',' ){
          /* ERROR: copy command not terminated by ',' */
          return -1;
        }
        zDelta++; lenDelta--;
        DEBUG1( printf("COPY %d from %d\n", cnt, ofst); )
        total += cnt;
        if( total>limit ){

          DEBUG2( printf("lastRead becomes %d\n", lastRead); )
        }
        bestCnt = 0;
        break;
      }

      /* If we reach this point, it means no match is found so far */
      if( base+i+NHASH>=lenOut ){
        /* We have reached the end of the file and have not found any
        ** matches.  Do an "insert" for everything that does not match */
        putInt(lenOut-base, &zDelta);
        *(zDelta++) = ':';
        memcpy(zDelta, &zOut[base], lenOut-base);
        zDelta += lenOut-base;
        base = lenOut;
................................................................................
  while( *zDelta && lenDelta>0 ){
    unsigned int cnt, ofst;
    cnt = getInt(&zDelta, &lenDelta);
    switch( zDelta[0] ){
      case '@': {
        zDelta++; lenDelta--;
        ofst = getInt(&zDelta, &lenDelta);
        if( lenDelta>0 && zDelta[0]!=',' ){
          /* ERROR: copy command not terminated by ',' */
          return -1;
        }
        zDelta++; lenDelta--;
        DEBUG1( printf("COPY %d from %d\n", cnt, ofst); )
        total += cnt;
        if( total>limit ){

**
** Given two input files, create and output a delta that carries
** the first file into the second.
*/
void delta_create_cmd(void){
  Blob orig, target, delta;
  if( g.argc!=5 ){
    fprintf(stderr,"Usage: %s %s ORIGIN TARGET DELTA\n", g.argv[0], g.argv[1]);
    fossil_exit(1);
  }
  if( blob_read_from_file(&orig, g.argv[2])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[2]);
    fossil_exit(1);
  }
  if( blob_read_from_file(&target, g.argv[3])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[3]);
................................................................................
**
** Given an input files and a delta, apply the delta to the input file
** and write the result.
*/
void delta_apply_cmd(void){
  Blob orig, target, delta;
  if( g.argc!=5 ){
    fprintf(stderr,"Usage: %s %s ORIGIN DELTA TARGET\n", g.argv[0], g.argv[1]);
    fossil_exit(1);
  }
  if( blob_read_from_file(&orig, g.argv[2])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[2]);
    fossil_exit(1);
  }
  if( blob_read_from_file(&delta, g.argv[3])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[3]);

**
** Given two input files, create and output a delta that carries
** the first file into the second.
*/
void delta_create_cmd(void){
  Blob orig, target, delta;
  if( g.argc!=5 ){
    usage("ORIGIN TARGET DELTA");

  }
  if( blob_read_from_file(&orig, g.argv[2])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[2]);
    fossil_exit(1);
  }
  if( blob_read_from_file(&target, g.argv[3])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[3]);
................................................................................
**
** Given an input files and a delta, apply the delta to the input file
** and write the result.
*/
void delta_apply_cmd(void){
  Blob orig, target, delta;
  if( g.argc!=5 ){
    usage("ORIGIN DELTA TARGET");

  }
  if( blob_read_from_file(&orig, g.argv[2])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[2]);
    fossil_exit(1);
  }
  if( blob_read_from_file(&delta, g.argv[3])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[3]);

#include <assert.h>


/*
** Create a temporary table named "leaves" if it does not
** already exist.  Load this table with the RID of all
** check-ins that are leaves which are decended from
** check-in iBase.  If iBase==0, find all leaves within the
** entire check-in hierarchy.
**
** A "leaf" is a check-in that has no children in the same branch.



**
** The closeMode flag determines behavior associated with the "closed"
** tag:
**
**    closeMode==0       Show all leaves regardless of the "closed" tag.
**
**    closeMode==1       Show only leaves without the "closed" tag.
................................................................................
  db_multi_exec(
    "CREATE TEMP TABLE IF NOT EXISTS leaves("
    "  rid INTEGER PRIMARY KEY"
    ");"
    "DELETE FROM leaves;"
  );

  /* We are checking all descendants of iBase.  If iBase==0, then
  ** use a short-cut to find all leaves anywhere in the hierarchy.
  */
  if( iBase<=0 ){
    db_multi_exec(
      "INSERT OR IGNORE INTO leaves"
      "  SELECT cid FROM plink"
      "  EXCEPT"
      "  SELECT pid FROM plink"
      "   WHERE coalesce((SELECT value FROM tagxref"
                         " WHERE tagid=%d AND rid=plink.pid),'trunk')"
           " == coalesce((SELECT value FROM tagxref"
                         " WHERE tagid=%d AND rid=plink.cid),'trunk');",
      TAG_BRANCH, TAG_BRANCH
    );
  }else{
    Bag seen;     /* Descendants seen */
    Bag pending;  /* Unpropagated descendants */
    Stmt q1;      /* Query to find children of a check-in */
    Stmt isBr;    /* Query to check to see if a check-in starts a new branch */
    Stmt ins;     /* INSERT statement for a new record */

    /* Initialize the bags. */
................................................................................
/*
** Load the record ID rid and up to N-1 closest ancestors into
** the "ok" table.
*/
void compute_ancestors(int rid, int N){
  Bag seen;
  PQueue queue;


  bag_init(&seen);
  pqueue_init(&queue);
  bag_insert(&seen, rid);
  pqueue_insert(&queue, rid, 0.0);
  while( (N--)>0 && (rid = pqueue_extract(&queue))!=0 ){
    Stmt q;
    db_multi_exec("INSERT OR IGNORE INTO ok VALUES(%d)", rid);
    db_prepare(&q,
       "SELECT a.pid, b.mtime FROM plink a LEFT JOIN plink b ON b.cid=a.pid"
       " WHERE a.cid=%d", rid
    );





    while( db_step(&q)==SQLITE_ROW ){
      int pid = db_column_int(&q, 0);
      double mtime = db_column_double(&q, 1);
      if( bag_insert(&seen, pid) ){
        pqueue_insert(&queue, pid, -mtime);
      }
    }
    db_finalize(&q);
  }
  bag_clear(&seen);
  pqueue_clear(&queue);


}

/*
** Load the record ID rid and up to N-1 closest descendants into
** the "ok" table.
*/
void compute_descendants(int rid, int N){
  Bag seen;
  PQueue queue;



  bag_init(&seen);
  pqueue_init(&queue);
  bag_insert(&seen, rid);
  pqueue_insert(&queue, rid, 0.0);
  while( (N--)>0 && (rid = pqueue_extract(&queue))!=0 ){
    Stmt q;
    db_multi_exec("INSERT OR IGNORE INTO ok VALUES(%d)", rid);
    db_prepare(&q,"SELECT cid, mtime FROM plink WHERE pid=%d", rid);





    while( db_step(&q)==SQLITE_ROW ){
      int pid = db_column_int(&q, 0);
      double mtime = db_column_double(&q, 1);
      if( bag_insert(&seen, pid) ){
        pqueue_insert(&queue, pid, mtime);
      }
    }
    db_finalize(&q);
  }
  bag_clear(&seen);
  pqueue_clear(&queue);


}

/*
** COMMAND:  descendants
**
** Usage: %fossil descendants ?BASELINE-ID?
**
................................................................................
** COMMAND:  leaves
**
** Usage: %fossil leaves ?--all? ?--closed?
**
** Find leaves of all branches.  By default show only open leaves.
** The --all flag causes all leaves (closed and open) to be shown.
** The --closed flag shows only closed leaves.



*/
void leaves_cmd(void){
  Stmt q;

  int showAll = find_option("all", 0, 0)!=0;
  int showClosed = find_option("closed", 0, 0)!=0;


  db_must_be_within_tree();
  compute_leaves(0, showAll ? 0 : showClosed ? 2 : 1);
  db_prepare(&q,
    "%s"



    "   AND blob.rid IN leaves"





    " ORDER BY event.mtime DESC",
    timeline_query_for_tty()
  );

  print_timeline(&q, 2000);
  db_finalize(&q);
}

/*
** This routine is called while for each check-in that is rendered by
** the "leaves" page.  Add some additional hyperlink to show the 
** ancestors of the leaf.
*/
static void leaves_extra(int rid){
  if( g.okHistory ){
    @ <a href="%s(g.zBaseURL)/timeline?p=%d(rid)">[timeline]</a>
  }
}

/*
** WEBPAGE:  leaves
**
** Find leaves of all branches.
*/
void leaves_page(void){

  Stmt q;
  int showAll = P("all")!=0;
  int showClosed = P("closed")!=0;

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }

................................................................................
    style_submenu_element("Closed", "Closed", "leaves?closed");
  }
  if( showClosed || showAll ){
    style_submenu_element("Open", "Open", "leaves");
  }
  style_header("Leaves");
  login_anonymous_available();
  compute_leaves(0, showAll ? 0 : showClosed ? 2 : 1);
  style_sidebox_begin("Nomenclature:", "33%");
  @ <ol>
  @ <li> A <div class="sideboxDescribed">leaf</div>
  @ is a check-in with no descendants.</li>
  @ <li> An <div class="sideboxDescribed">open leaf</div>
  @ is a leaf that does not have a "closed" tag
  @ and is thus assumed to still be in use.</li>
  @ <li> A <div class="sideboxDescribed">closed leaf</div>
  @ has a "closed" tag and is thus assumed to
  @ be historical and no longer in active use.</li>
  @ </ol>
................................................................................
  if( showAll ){
    @ <h1>All leaves, both open and closed:</h1>
  }else if( showClosed ){
    @ <h1>Closed leaves:</h1>
  }else{
    @ <h1>Open leaves:</h1>
  }
  db_prepare(&q,
    "%s"
    "   AND blob.rid IN leaves"





    " ORDER BY event.mtime DESC",
    timeline_query_for_www()
  );

  www_print_timeline(&q, TIMELINE_LEAFONLY, leaves_extra);
  db_finalize(&q);
  @ <br />
  @ <script  type="text/JavaScript">
  @ function xin(id){
  @ }
  @ function xout(id){
  @ }
  @ </script>
  style_footer();
}

#include <assert.h>


/*
** Create a temporary table named "leaves" if it does not
** already exist.  Load this table with the RID of all
** check-ins that are leaves which are decended from
** check-in iBase.

**
** A "leaf" is a check-in that has no children in the same branch.
** There is a separate permanent table LEAF that contains all leaves
** in the tree.  This routine is used to compute a subset of that
** table consisting of leaves that are descended from a single checkin.
**
** The closeMode flag determines behavior associated with the "closed"
** tag:
**
**    closeMode==0       Show all leaves regardless of the "closed" tag.
**
**    closeMode==1       Show only leaves without the "closed" tag.
................................................................................
  db_multi_exec(
    "CREATE TEMP TABLE IF NOT EXISTS leaves("
    "  rid INTEGER PRIMARY KEY"
    ");"
    "DELETE FROM leaves;"
  );




  if( iBase>0 ){












    Bag seen;     /* Descendants seen */
    Bag pending;  /* Unpropagated descendants */
    Stmt q1;      /* Query to find children of a check-in */
    Stmt isBr;    /* Query to check to see if a check-in starts a new branch */
    Stmt ins;     /* INSERT statement for a new record */

    /* Initialize the bags. */
................................................................................
/*
** Load the record ID rid and up to N-1 closest ancestors into
** the "ok" table.
*/
void compute_ancestors(int rid, int N){
  Bag seen;
  PQueue queue;
  Stmt ins;
  Stmt q;
  bag_init(&seen);
  pqueue_init(&queue);
  bag_insert(&seen, rid);
  pqueue_insert(&queue, rid, 0.0, 0);


  db_prepare(&ins, "INSERT OR IGNORE INTO ok VALUES(:rid)");
  db_prepare(&q,
    "SELECT a.pid, b.mtime FROM plink a LEFT JOIN plink b ON b.cid=a.pid"
    " WHERE a.cid=:rid"
  );
  while( (N--)>0 && (rid = pqueue_extract(&queue, 0))!=0 ){
    db_bind_int(&ins, ":rid", rid);
    db_step(&ins);
    db_reset(&ins);
    db_bind_int(&q, ":rid", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int pid = db_column_int(&q, 0);
      double mtime = db_column_double(&q, 1);
      if( bag_insert(&seen, pid) ){
        pqueue_insert(&queue, pid, -mtime, 0);
      }
    }
    db_reset(&q);
  }
  bag_clear(&seen);
  pqueue_clear(&queue);
  db_finalize(&ins);
  db_finalize(&q);
}

/*
** Load the record ID rid and up to N-1 closest descendants into
** the "ok" table.
*/
void compute_descendants(int rid, int N){
  Bag seen;
  PQueue queue;
  Stmt ins;
  Stmt q;

  bag_init(&seen);
  pqueue_init(&queue);
  bag_insert(&seen, rid);
  pqueue_insert(&queue, rid, 0.0, 0);


  db_prepare(&ins, "INSERT OR IGNORE INTO ok VALUES(:rid)");
  db_prepare(&q, "SELECT cid, mtime FROM plink WHERE pid=:rid");
  while( (N--)>0 && (rid = pqueue_extract(&queue, 0))!=0 ){
    db_bind_int(&ins, ":rid", rid);
    db_step(&ins);
    db_reset(&ins);
    db_bind_int(&q, ":rid", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int pid = db_column_int(&q, 0);
      double mtime = db_column_double(&q, 1);
      if( bag_insert(&seen, pid) ){
        pqueue_insert(&queue, pid, mtime, 0);
      }
    }
    db_reset(&q);
  }
  bag_clear(&seen);
  pqueue_clear(&queue);
  db_finalize(&ins);
  db_finalize(&q);
}

/*
** COMMAND:  descendants
**
** Usage: %fossil descendants ?BASELINE-ID?
**
................................................................................
** COMMAND:  leaves
**
** Usage: %fossil leaves ?--all? ?--closed?
**
** Find leaves of all branches.  By default show only open leaves.
** The --all flag causes all leaves (closed and open) to be shown.
** The --closed flag shows only closed leaves.
**
** The --recompute flag causes the content of the "leaf" table in the
** repository database to be recomputed.
*/
void leaves_cmd(void){
  Stmt q;
  Blob sql;
  int showAll = find_option("all", 0, 0)!=0;
  int showClosed = find_option("closed", 0, 0)!=0;
  int recomputeFlag = find_option("recompute",0,0)!=0;

  db_must_be_within_tree();



  if( recomputeFlag ) leaf_rebuild();
  blob_zero(&sql);
  blob_append(&sql, timeline_query_for_tty(), -1);
  blob_appendf(&sql, " AND blob.rid IN leaf");
  if( showClosed ){
    blob_appendf(&sql," AND %z", leaf_is_closed_sql("blob.rid"));
  }else if( !showAll ){
    blob_appendf(&sql," AND NOT %z", leaf_is_closed_sql("blob.rid"));
  }
  db_prepare(&q, "%s ORDER BY event.mtime DESC", blob_str(&sql));


  blob_reset(&sql);
  print_timeline(&q, 2000);
  db_finalize(&q);
}












/*
** WEBPAGE:  leaves
**
** Find leaves of all branches.
*/
void leaves_page(void){
  Blob sql;
  Stmt q;
  int showAll = P("all")!=0;
  int showClosed = P("closed")!=0;

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }

................................................................................
    style_submenu_element("Closed", "Closed", "leaves?closed");
  }
  if( showClosed || showAll ){
    style_submenu_element("Open", "Open", "leaves");
  }
  style_header("Leaves");
  login_anonymous_available();

  style_sidebox_begin("Nomenclature:", "33%");
  @ <ol>
  @ <li> A <div class="sideboxDescribed">leaf</div>
  @ is a check-in with no descendants in the same branch.</li>
  @ <li> An <div class="sideboxDescribed">open leaf</div>
  @ is a leaf that does not have a "closed" tag
  @ and is thus assumed to still be in use.</li>
  @ <li> A <div class="sideboxDescribed">closed leaf</div>
  @ has a "closed" tag and is thus assumed to
  @ be historical and no longer in active use.</li>
  @ </ol>
................................................................................
  if( showAll ){
    @ <h1>All leaves, both open and closed:</h1>
  }else if( showClosed ){
    @ <h1>Closed leaves:</h1>
  }else{
    @ <h1>Open leaves:</h1>
  }
  blob_zero(&sql);
  blob_append(&sql, timeline_query_for_www(), -1);
  blob_appendf(&sql, " AND blob.rid IN leaf");
  if( showClosed ){
    blob_appendf(&sql," AND %z", leaf_is_closed_sql("blob.rid"));
  }else if( !showAll ){
    blob_appendf(&sql," AND NOT %z", leaf_is_closed_sql("blob.rid"));
  }
  db_prepare(&q, "%s ORDER BY event.mtime DESC", blob_str(&sql));


  blob_reset(&sql);
  www_print_timeline(&q, TIMELINE_LEAFONLY, 0, 0, 0);
  db_finalize(&q);
  @ <br />
  @ <script  type="text/JavaScript">
  @ function xin(id){
  @ }
  @ function xout(id){
  @ }
  @ </script>
  style_footer();
}

      na += R[r+nr*3];
      nb += R[r+nr*3];
    }
    for(i=1; i<nr; i++){
      na += R[r+i*3];
      nb += R[r+i*3];
    }





    blob_appendf(pOut,"@@ -%d,%d +%d,%d @@\n", a+skip+1, na, b+skip+1, nb);



    /* Show the initial common area */
    a += skip;
    b += skip;
    m = R[r] - skip;
    for(j=0; j<m; j++){
      appendDiffLine(pOut, " ", &A[a+j]);
................................................................................
/*
** The status of an annotation operation is recorded by an instance
** of the following structure.
*/
typedef struct Annotator Annotator;
struct Annotator {
  DContext c;       /* The diff-engine context */
  struct {          /* Lines of the original files... */
    const char *z;       /* The text of the line */
    int n;               /* Number of bytes (omitting trailing space and \n) */

    const char *zSrc;    /* Tag showing origin of this line */
  } *aOrig;
  int nOrig;        /* Number of elements in aOrig[] */
  int nNoSrc;       /* Number of entries where aOrig[].zSrc==NULL */



};

/*
** Initialize the annotation process by specifying the file that is
** to be annotated.  The annotator takes control of the input Blob and
** will release it when it is finished with it.
*/
................................................................................
** if additional annotation is required.  zPName is the tag to insert
** on each line of the file being annotated that was contributed by
** pParent.  Memory to hold zPName is leaked.
*/
static int annotation_step(Annotator *p, Blob *pParent, char *zPName){
  int i, j;
  int lnTo;



  /* Prepare the parent file to be diffed */
  p->c.aFrom = break_into_lines(blob_str(pParent), blob_size(pParent),
                                &p->c.nFrom, 1);
  if( p->c.aFrom==0 ){
    return 1;
  }
................................................................................
  /* Compute the differences going from pParent to the file being
  ** annotated. */
  diff_all(&p->c);

  /* Where new lines are inserted on this difference, record the
  ** zPName as the source of the new line.
  */



  for(i=lnTo=0; i<p->c.nEdit; i+=3){

    for(j=0; j<p->c.aEdit[i]; j++, lnTo++){

      p->aOrig[lnTo].zSrc = zPName;


    }
    lnTo += p->c.aEdit[i+2];
  }

  /* Clear out the diff results */
  free(p->c.aEdit);
  p->c.aEdit = 0;
................................................................................
  for(i=0; i<x.nOrig; i++){
    const char *zSrc = x.aOrig[i].zSrc;
    if( zSrc==0 ) zSrc = g.argv[g.argc-1];
    printf("%10s: %.*s\n", zSrc, x.aOrig[i].n, x.aOrig[i].z);
  }
}




/*
** Compute a complete annotation on a file.  The file is identified
** by its filename number (filename.fnid) and the baseline in which
** it was checked in (mlink.mid).
*/
static void annotate_file(Annotator *p, int fnid, int mid, int webLabel){







  Blob toAnnotate;     /* Text of the final version of the file */
  Blob step;           /* Text of previous revision */
  int rid;             /* Artifact ID of the file being annotated */
  char *zLabel;        /* Label to apply to a line */
  Stmt q;              /* Query returning all ancestor versions */

  /* Initialize the annotation */
................................................................................
    fossil_panic("unable to retrieve content of artifact #%d", rid);
  }
  db_multi_exec("CREATE TEMP TABLE ok(rid INTEGER PRIMARY KEY)");
  compute_ancestors(mid, 1000000000);
  annotation_start(p, &toAnnotate);

  db_prepare(&q, 
    "SELECT mlink.fid, blob.uuid, date(event.mtime), "


    "       coalesce(event.euser,event.user) "
    "  FROM mlink, blob, event"
    " WHERE mlink.fnid=%d"
    "   AND mlink.mid IN ok"
    "   AND blob.rid=mlink.mid"
    "   AND event.objid=mlink.mid"
    " ORDER BY event.mtime DESC",


    fnid

  );
  while( db_step(&q)==SQLITE_ROW ){
    int pid = db_column_int(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zDate = db_column_text(&q, 2);
    const char *zUser = db_column_text(&q, 3);
    if( webLabel ){
      zLabel = mprintf("<a href='%s/info/%s'>%.10s</a> %s %9.9s", 

                       g.zBaseURL, zUuid, zUuid, zDate, zUser);

    }else{
      zLabel = mprintf("%.10s %s %9.9s", zUuid, zDate, zUser);
    }



    content_get(pid, &step);
    annotation_step(p, &step, zLabel);
    blob_reset(&step);
  }
  db_finalize(&q);
}

................................................................................
**    checkin=ID          The manifest ID at which to start the annotation
**    filename=FILENAME   The filename.
*/
void annotation_page(void){
  int mid;
  int fnid;
  int i;


  Annotator ann;

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  mid = name_to_rid(PD("checkin","0"));
  fnid = db_int(0, "SELECT fnid FROM filename WHERE name=%Q", P("filename"));
  if( mid==0 || fnid==0 ){ fossil_redirect_home(); }

  if( !db_exists("SELECT 1 FROM mlink WHERE mid=%d AND fnid=%d",mid,fnid) ){
    fossil_redirect_home();
  }
  style_header("File Annotation");

  annotate_file(&ann, fnid, mid, g.okHistory);











  @ <pre>
  for(i=0; i<ann.nOrig; i++){
    ((char*)ann.aOrig[i].z)[ann.aOrig[i].n] = 0;
    @ %s(ann.aOrig[i].zSrc): %h(ann.aOrig[i].z)
  }
  @ </pre>
  style_footer();
................................................................................
/*
** COMMAND: annotate
**
** %fossil annotate FILENAME
**
** Output the text of a file with markings to show when each line of
** the file was last modified.





*/
void annotate_cmd(void){
  int fnid;         /* Filename ID */
  int fid;          /* File instance ID */
  int mid;          /* Manifest where file was checked in */
  Blob treename;    /* FILENAME translated to canonical form */
  char *zFilename;  /* Cannonical filename */
  Annotator ann;    /* The annotation of the file */
  int i;            /* Loop counter */











  db_must_be_within_tree();
  if (g.argc<3) {
    usage("FILENAME");
  }
  file_tree_name(g.argv[2], &treename, 1);
  zFilename = blob_str(&treename);
  fnid = db_int(0, "SELECT fnid FROM filename WHERE name=%Q", zFilename);
................................................................................
  if( fid==0 ){
    fossil_fatal("not part of current checkout: %s", zFilename);
  }
  mid = db_int(0, "SELECT mid FROM mlink WHERE fid=%d AND fnid=%d", fid, fnid);
  if( mid==0 ){
    fossil_panic("unable to find manifest");
  }

  annotate_file(&ann, fnid, mid, 0);






  for(i=0; i<ann.nOrig; i++){
    printf("%s: %.*s\n", ann.aOrig[i].zSrc, ann.aOrig[i].n, ann.aOrig[i].z);
  }
}

      na += R[r+nr*3];
      nb += R[r+nr*3];
    }
    for(i=1; i<nr; i++){
      na += R[r+i*3];
      nb += R[r+i*3];
    }
    /*
     * If the patch changes an empty file or results in an empty file,
     * the block header must use 0,0 as position indicator and not 1,0.
     * Otherwise, patch would be confused and may reject the diff.
     */
    blob_appendf(pOut,"@@ -%d,%d +%d,%d @@\n",
      na ? a+skip+1 : 0, na,
      nb ? b+skip+1 : 0, nb);

    /* Show the initial common area */
    a += skip;
    b += skip;
    m = R[r] - skip;
    for(j=0; j<m; j++){
      appendDiffLine(pOut, " ", &A[a+j]);
................................................................................
/*
** The status of an annotation operation is recorded by an instance
** of the following structure.
*/
typedef struct Annotator Annotator;
struct Annotator {
  DContext c;       /* The diff-engine context */
  struct AnnLine {  /* Lines of the original files... */
    const char *z;       /* The text of the line */
    short int n;         /* Number of bytes (omitting trailing space and \n) */
    short int iLevel;    /* Level at which tag was set */
    const char *zSrc;    /* Tag showing origin of this line */
  } *aOrig;
  int nOrig;        /* Number of elements in aOrig[] */
  int nNoSrc;       /* Number of entries where aOrig[].zSrc==NULL */
  int iLevel;       /* Current level */
  int nVers;        /* Number of versions analyzed */
  char **azVers;    /* Names of versions analyzed */
};

/*
** Initialize the annotation process by specifying the file that is
** to be annotated.  The annotator takes control of the input Blob and
** will release it when it is finished with it.
*/
................................................................................
** if additional annotation is required.  zPName is the tag to insert
** on each line of the file being annotated that was contributed by
** pParent.  Memory to hold zPName is leaked.
*/
static int annotation_step(Annotator *p, Blob *pParent, char *zPName){
  int i, j;
  int lnTo;
  int iPrevLevel;
  int iThisLevel;

  /* Prepare the parent file to be diffed */
  p->c.aFrom = break_into_lines(blob_str(pParent), blob_size(pParent),
                                &p->c.nFrom, 1);
  if( p->c.aFrom==0 ){
    return 1;
  }
................................................................................
  /* Compute the differences going from pParent to the file being
  ** annotated. */
  diff_all(&p->c);

  /* Where new lines are inserted on this difference, record the
  ** zPName as the source of the new line.
  */
  iPrevLevel = p->iLevel;
  p->iLevel++;
  iThisLevel = p->iLevel;
  for(i=lnTo=0; i<p->c.nEdit; i+=3){
    struct AnnLine *x = &p->aOrig[lnTo];
    for(j=0; j<p->c.aEdit[i]; j++, lnTo++, x++){
      if( x->zSrc==0 || x->iLevel==iPrevLevel ){
         x->zSrc = zPName;
         x->iLevel = iThisLevel;
      }
    }
    lnTo += p->c.aEdit[i+2];
  }

  /* Clear out the diff results */
  free(p->c.aEdit);
  p->c.aEdit = 0;
................................................................................
  for(i=0; i<x.nOrig; i++){
    const char *zSrc = x.aOrig[i].zSrc;
    if( zSrc==0 ) zSrc = g.argv[g.argc-1];
    printf("%10s: %.*s\n", zSrc, x.aOrig[i].n, x.aOrig[i].z);
  }
}

/* Annotation flags */
#define ANN_FILE_VERS  0x001  /* Show file version rather than commit version */

/*
** Compute a complete annotation on a file.  The file is identified
** by its filename number (filename.fnid) and the baseline in which
** it was checked in (mlink.mid).
*/
static void annotate_file(
  Annotator *p,        /* The annotator */
  int fnid,            /* The name of the file to be annotated */
  int mid,             /* The specific version of the file for this step */
  int webLabel,        /* Use web-style annotations if true */
  int iLimit,          /* Limit the number of levels if greater than zero */
  int annFlags         /* Flags to alter the annotation */
){
  Blob toAnnotate;     /* Text of the final version of the file */
  Blob step;           /* Text of previous revision */
  int rid;             /* Artifact ID of the file being annotated */
  char *zLabel;        /* Label to apply to a line */
  Stmt q;              /* Query returning all ancestor versions */

  /* Initialize the annotation */
................................................................................
    fossil_panic("unable to retrieve content of artifact #%d", rid);
  }
  db_multi_exec("CREATE TEMP TABLE ok(rid INTEGER PRIMARY KEY)");
  compute_ancestors(mid, 1000000000);
  annotation_start(p, &toAnnotate);

  db_prepare(&q, 
    "SELECT mlink.fid,"
    "       (SELECT uuid FROM blob WHERE rid=mlink.%s),"
    "       date(event.mtime), "
    "       coalesce(event.euser,event.user) "
    "  FROM mlink, event"
    " WHERE mlink.fnid=%d"
    "   AND mlink.mid IN ok"

    "   AND event.objid=mlink.mid"
    " ORDER BY event.mtime DESC"
    " LIMIT %d",
    (annFlags & ANN_FILE_VERS)!=0 ? "fid" : "mid",
    fnid,
    iLimit>0 ? iLimit : 10000000
  );
  while( db_step(&q)==SQLITE_ROW ){
    int pid = db_column_int(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zDate = db_column_text(&q, 2);
    const char *zUser = db_column_text(&q, 3);
    if( webLabel ){
      zLabel = mprintf(
          "<a href='%s/info/%s' target='infowindow'>%.10s</a> %s %9.9s", 
          g.zTop, zUuid, zUuid, zDate, zUser
      );
    }else{
      zLabel = mprintf("%.10s %s %9.9s", zUuid, zDate, zUser);
    }
    p->nVers++;
    p->azVers = fossil_realloc(p->azVers, p->nVers*sizeof(p->azVers[0]) );
    p->azVers[p->nVers-1] = zLabel;
    content_get(pid, &step);
    annotation_step(p, &step, zLabel);
    blob_reset(&step);
  }
  db_finalize(&q);
}

................................................................................
**    checkin=ID          The manifest ID at which to start the annotation
**    filename=FILENAME   The filename.
*/
void annotation_page(void){
  int mid;
  int fnid;
  int i;
  int iLimit;
  int annFlags = 0;
  Annotator ann;

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  mid = name_to_rid(PD("checkin","0"));
  fnid = db_int(0, "SELECT fnid FROM filename WHERE name=%Q", P("filename"));
  if( mid==0 || fnid==0 ){ fossil_redirect_home(); }
  iLimit = atoi(PD("limit","-1"));
  if( !db_exists("SELECT 1 FROM mlink WHERE mid=%d AND fnid=%d",mid,fnid) ){
    fossil_redirect_home();
  }
  style_header("File Annotation");
  if( P("filevers") ) annFlags |= ANN_FILE_VERS;
  annotate_file(&ann, fnid, mid, g.okHistory, iLimit, annFlags);
  if( P("log") ){
    int i;
    @ <h2>Versions analyzed:</h2>
    @ <ol>
    for(i=0; i<ann.nVers; i++){
      @ <li><tt>%s(ann.azVers[i])</tt></li>
    }
    @ </ol>
    @ <hr>
    @ <h2>Annotation:</h2>
  }
  @ <pre>
  for(i=0; i<ann.nOrig; i++){
    ((char*)ann.aOrig[i].z)[ann.aOrig[i].n] = 0;
    @ %s(ann.aOrig[i].zSrc): %h(ann.aOrig[i].z)
  }
  @ </pre>
  style_footer();
................................................................................
/*
** COMMAND: annotate
**
** %fossil annotate FILENAME
**
** Output the text of a file with markings to show when each line of
** the file was last modified.
**
** Options:
**   --limit N       Only look backwards in time by N versions
**   --log           List all versions analyzed
**   --filevers      Show file version numbers rather than check-in versions
*/
void annotate_cmd(void){
  int fnid;         /* Filename ID */
  int fid;          /* File instance ID */
  int mid;          /* Manifest where file was checked in */
  Blob treename;    /* FILENAME translated to canonical form */
  char *zFilename;  /* Cannonical filename */
  Annotator ann;    /* The annotation of the file */
  int i;            /* Loop counter */
  const char *zLimit; /* The value to the --limit option */
  int iLimit;       /* How far back in time to look */
  int showLog;      /* True to show the log */
  int fileVers;     /* Show file version instead of check-in versions */
  int annFlags = 0; /* Flags to control annotation properties */

  zLimit = find_option("limit",0,1);
  if( zLimit==0 || zLimit[0]==0 ) zLimit = "-1";
  iLimit = atoi(zLimit);
  showLog = find_option("log",0,0)!=0;
  fileVers = find_option("filevers",0,0)!=0;
  db_must_be_within_tree();
  if (g.argc<3) {
    usage("FILENAME");
  }
  file_tree_name(g.argv[2], &treename, 1);
  zFilename = blob_str(&treename);
  fnid = db_int(0, "SELECT fnid FROM filename WHERE name=%Q", zFilename);
................................................................................
  if( fid==0 ){
    fossil_fatal("not part of current checkout: %s", zFilename);
  }
  mid = db_int(0, "SELECT mid FROM mlink WHERE fid=%d AND fnid=%d", fid, fnid);
  if( mid==0 ){
    fossil_panic("unable to find manifest");
  }
  if( fileVers ) annFlags |= ANN_FILE_VERS;
  annotate_file(&ann, fnid, mid, 0, iLimit, annFlags);
  if( showLog ){
    for(i=0; i<ann.nVers; i++){
      printf("version %3d: %s\n", i+1, ann.azVers[i]);
    }
    printf("---------------------------------------------------\n");
  }
  for(i=0; i<ann.nOrig; i++){
    printf("%s: %.*s\n", ann.aOrig[i].zSrc, ann.aOrig[i].n, ann.aOrig[i].z);
  }
}

#include <assert.h>

/*
** Diff option flags
*/
#define DIFF_NEWFILE  0x01    /* Treat non-existing fails as empty files */
#define DIFF_NOEOLWS  0x02    /* Ignore whitespace at the end of lines */
























/*
** Show the difference between two files, one in memory and one on disk.
**
** The difference is the set of edits needed to transform pFile1 into
** zFile2.  The content of pFile1 is in memory.  zFile2 exists on disk.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
*/
static void diff_file(
  Blob *pFile1,             /* In memory content to compare from */
  const char *zFile2,       /* On disk content to compare to */
  const char *zName,        /* Display name of the file */
  const char *zDiffCmd,     /* Command for comparison */
  int ignoreEolWs           /* Ignore whitespace at end of line */
){
  if( zDiffCmd==0 ){
................................................................................
      blob_read_from_file(&file2, zFile2);
      zName2 = zName;
    }

    /* Compute and output the differences */
    blob_zero(&out);
    text_diff(pFile1, &file2, &out, 5, ignoreEolWs);

    printf("--- %s\n+++ %s\n", zName, zName2);
    printf("%s\n", blob_str(&out));


    /* Release memory resources */
    blob_reset(&file2);
    blob_reset(&out);
  }else{
    int cnt = 0;
    Blob nameFile1;    /* Name of temporary file to old pFile1 content */
................................................................................
**
** The difference is the set of edits needed to transform pFile1 into
** pFile2.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
*/
static void diff_file_mem(
  Blob *pFile1,             /* In memory content to compare from */
  Blob *pFile2,             /* In memory content to compare to */
  const char *zName,        /* Display name of the file */
  const char *zDiffCmd,     /* Command for comparison */
  int ignoreEolWs           /* Ignore whitespace at end of lines */
){
  if( zDiffCmd==0 ){
    Blob out;      /* Diff output text */

    blob_zero(&out);
    text_diff(pFile1, pFile2, &out, 5, ignoreEolWs);
    printf("--- %s\n+++ %s\n", zName, zName);
    printf("%s\n", blob_str(&out));

    /* Release memory resources */
    blob_reset(&out);
  }else{
    Blob cmd;
    char zTemp1[300];
    char zTemp2[300];
................................................................................
  const char *zFrom,        /* Name of file */
  const char *zDiffCmd,     /* Use this "diff" command */
  int ignoreEolWs           /* Ignore whitespace changes at end of lines */
){
  Blob fname;
  Blob content;
  file_tree_name(g.argv[2], &fname, 1);
  historical_version_of_file(zFrom, blob_str(&fname), &content, 0);
  diff_file(&content, g.argv[2], g.argv[2], zDiffCmd, ignoreEolWs);
  blob_reset(&content);
  blob_reset(&fname);
}

/*
** Run a diff between the version zFrom and files on disk.  zFrom might
................................................................................
  Stmt q;
  int ignoreEolWs;          /* Ignore end-of-line whitespace */
  int asNewFile;            /* Treat non-existant files as empty files */

  ignoreEolWs = (diffFlags & DIFF_NOEOLWS)!=0;
  asNewFile = (diffFlags & DIFF_NEWFILE)!=0;
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, 1);
  blob_zero(&sql);
  db_begin_transaction();
  if( zFrom ){
    int rid = name_to_rid(zFrom);
    if( !is_a_version(rid) ){
      fossil_fatal("no such check-in: %s", zFrom);
    }
    load_vfile_from_rid(rid);
    blob_appendf(&sql,
      "SELECT v2.pathname, v2.deleted, v2.chnged, v2.rid==0, v1.rid"
      "  FROM vfile v1, vfile v2 "
      " WHERE v1.pathname=v2.pathname AND v1.vid=%d AND v2.vid=%d"
      "   AND (v2.deleted OR v2.chnged OR v1.rid!=v2.rid)"
      "UNION "
      "SELECT pathname, 1, 0, 0, 0"
      "  FROM vfile v1"
      " WHERE v1.vid=%d"
      "   AND NOT EXISTS(SELECT 1 FROM vfile v2"
                        " WHERE v2.vid=%d AND v2.pathname=v1.pathname)"
      "UNION "
................................................................................
    int isChnged = db_column_int(&q,2);
    int isNew = db_column_int(&q,3);
    int srcid = db_column_int(&q, 4);
    char *zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
    char *zToFree = zFullName;
    int showDiff = 1;
    if( isDeleted ){
      printf("DELETED  %s\n", zPathname);
      if( !asNewFile ){ showDiff = 0; zFullName = "/dev/null"; }
    }else if( access(zFullName, 0) ){
      printf("MISSING  %s\n", zPathname);
      if( !asNewFile ){ showDiff = 0; }
    }else if( isNew ){
      printf("ADDED    %s\n", zPathname);
      srcid = 0;
      if( !asNewFile ){ showDiff = 0; }
    }else if( isChnged==3 ){
      printf("ADDED_BY_MERGE %s\n", zPathname);
      srcid = 0;
      if( !asNewFile ){ showDiff = 0; }
    }
    if( showDiff ){
      Blob content;
      if( srcid>0 ){
        content_get(srcid, &content);
      }else{
        blob_zero(&content);
      }
      printf("Index: %s\n======================================="
             "============================\n",
             zPathname
      );
      diff_file(&content, zFullName, zPathname, zDiffCmd, ignoreEolWs);
      blob_reset(&content);
    }
    free(zToFree);
  }
  db_finalize(&q);
  db_end_transaction(1);  /* ROLLBACK */
................................................................................
  int ignoreEolWs
){
  char *zName;
  Blob fname;
  Blob v1, v2;
  file_tree_name(g.argv[2], &fname, 1);
  zName = blob_str(&fname);
  historical_version_of_file(zFrom, zName, &v1, 0);
  historical_version_of_file(zTo, zName, &v2, 0);
  diff_file_mem(&v1, &v2, zName, zDiffCmd, ignoreEolWs);
  blob_reset(&v1);
  blob_reset(&v2);
  blob_reset(&fname);
}

/*
................................................................................
  struct ManifestFile *pTo,
  const char *zDiffCmd,
  int ignoreEolWs
){
  Blob f1, f2;
  int rid;
  const char *zName =  pFrom ? pFrom->zName : pTo->zName;
  printf("Index: %s\n======================================="
         "============================\n", zName);
  if( pFrom ){
    rid = uuid_to_rid(pFrom->zUuid, 0);
    content_get(rid, &f1);
  }else{
    blob_zero(&f1);
  }
  if( pTo ){
................................................................................
  while( pFromFile || pToFile ){
    int cmp;
    if( pFromFile==0 ){
      cmp = +1;
    }else if( pToFile==0 ){
      cmp = -1;
    }else{
      cmp = strcmp(pFromFile->zName, pToFile->zName);
    }
    if( cmp<0 ){
      printf("DELETED %s\n", pFromFile->zName);
      if( asNewFlag ){
        diff_manifest_entry(pFromFile, 0, zDiffCmd, ignoreEolWs);
      }
      pFromFile = manifest_file_next(pFrom,0);
    }else if( cmp>0 ){
      printf("ADDED   %s\n", pToFile->zName);
      if( asNewFlag ){
        diff_manifest_entry(0, pToFile, zDiffCmd, ignoreEolWs);
      }
      pToFile = manifest_file_next(pTo,0);
    }else if( strcmp(pFromFile->zUuid, pToFile->zUuid)==0 ){
      /* No changes */
      pFromFile = manifest_file_next(pFrom,0);
      pToFile = manifest_file_next(pTo,0);
    }else{
      printf("CHANGED %s\n", pFromFile->zName);
      diff_manifest_entry(pFromFile, pToFile, zDiffCmd, ignoreEolWs);
      pFromFile = manifest_file_next(pFrom,0);
      pToFile = manifest_file_next(pTo,0);
    }
  }
  manifest_destroy(pFrom);
  manifest_destroy(pTo);
................................................................................
      diff_one_against_disk(zFrom, zDiffCmd, 0);
    }else{
      diff_all_against_disk(zFrom, zDiffCmd, diffFlags);
    }
  }else if( zFrom==0 ){
    fossil_fatal("must use --from if --to is present");
  }else{
    db_find_and_open_repository(1);
    verify_all_options();
    if( !isInternDiff ){
      zDiffCmd = db_get(isGDiff ? "gdiff-command" : "diff-command", 0);
    }
    if( g.argc==3 ){
      diff_one_two_versions(zFrom, zTo, zDiffCmd, 0);
    }else{
      diff_all_two_versions(zFrom, zTo, zDiffCmd, diffFlags);
    }
  }
}

#include <assert.h>

/*
** Diff option flags
*/
#define DIFF_NEWFILE  0x01    /* Treat non-existing fails as empty files */
#define DIFF_NOEOLWS  0x02    /* Ignore whitespace at the end of lines */

/*
** Output the results of a diff.  Output goes to stdout for command-line
** or to the CGI/HTTP result buffer for web pages.
*/
static void diff_printf(const char *zFormat, ...){
  va_list ap;
  va_start(ap, zFormat);
  if( g.cgiOutput ){
    cgi_vprintf(zFormat, ap);
  }else{
    vprintf(zFormat, ap);
  }
  va_end(ap);
}

/*
** Print the "Index:" message that patch wants to see at the top of a diff.
*/
void diff_print_index(const char *zFile){
  diff_printf("Index: %s\n======================================="
              "============================\n", zFile);
}

/*
** Show the difference between two files, one in memory and one on disk.
**
** The difference is the set of edits needed to transform pFile1 into
** zFile2.  The content of pFile1 is in memory.  zFile2 exists on disk.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
*/
void diff_file(
  Blob *pFile1,             /* In memory content to compare from */
  const char *zFile2,       /* On disk content to compare to */
  const char *zName,        /* Display name of the file */
  const char *zDiffCmd,     /* Command for comparison */
  int ignoreEolWs           /* Ignore whitespace at end of line */
){
  if( zDiffCmd==0 ){
................................................................................
      blob_read_from_file(&file2, zFile2);
      zName2 = zName;
    }

    /* Compute and output the differences */
    blob_zero(&out);
    text_diff(pFile1, &file2, &out, 5, ignoreEolWs);
    if( blob_size(&out) ){
      diff_printf("--- %s\n+++ %s\n", zName, zName2);
      diff_printf("%s\n", blob_str(&out));
    }

    /* Release memory resources */
    blob_reset(&file2);
    blob_reset(&out);
  }else{
    int cnt = 0;
    Blob nameFile1;    /* Name of temporary file to old pFile1 content */
................................................................................
**
** The difference is the set of edits needed to transform pFile1 into
** pFile2.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
*/
void diff_file_mem(
  Blob *pFile1,             /* In memory content to compare from */
  Blob *pFile2,             /* In memory content to compare to */
  const char *zName,        /* Display name of the file */
  const char *zDiffCmd,     /* Command for comparison */
  int ignoreEolWs           /* Ignore whitespace at end of lines */
){
  if( zDiffCmd==0 ){
    Blob out;      /* Diff output text */

    blob_zero(&out);
    text_diff(pFile1, pFile2, &out, 5, ignoreEolWs);
    diff_printf("--- %s\n+++ %s\n", zName, zName);
    diff_printf("%s\n", blob_str(&out));

    /* Release memory resources */
    blob_reset(&out);
  }else{
    Blob cmd;
    char zTemp1[300];
    char zTemp2[300];
................................................................................
  const char *zFrom,        /* Name of file */
  const char *zDiffCmd,     /* Use this "diff" command */
  int ignoreEolWs           /* Ignore whitespace changes at end of lines */
){
  Blob fname;
  Blob content;
  file_tree_name(g.argv[2], &fname, 1);
  historical_version_of_file(zFrom, blob_str(&fname), &content, 0, 0);
  diff_file(&content, g.argv[2], g.argv[2], zDiffCmd, ignoreEolWs);
  blob_reset(&content);
  blob_reset(&fname);
}

/*
** Run a diff between the version zFrom and files on disk.  zFrom might
................................................................................
  Stmt q;
  int ignoreEolWs;          /* Ignore end-of-line whitespace */
  int asNewFile;            /* Treat non-existant files as empty files */

  ignoreEolWs = (diffFlags & DIFF_NOEOLWS)!=0;
  asNewFile = (diffFlags & DIFF_NEWFILE)!=0;
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, 1, 0);
  blob_zero(&sql);
  db_begin_transaction();
  if( zFrom ){
    int rid = name_to_rid(zFrom);
    if( !is_a_version(rid) ){
      fossil_fatal("no such check-in: %s", zFrom);
    }
    load_vfile_from_rid(rid);
    blob_appendf(&sql,
      "SELECT v2.pathname, v2.deleted, v2.chnged, v2.rid==0, v1.rid"
      "  FROM vfile v1, vfile v2 "
      " WHERE v1.pathname=v2.pathname AND v1.vid=%d AND v2.vid=%d"
      "   AND (v2.deleted OR v2.chnged OR v1.mrid!=v2.rid)"
      "UNION "
      "SELECT pathname, 1, 0, 0, 0"
      "  FROM vfile v1"
      " WHERE v1.vid=%d"
      "   AND NOT EXISTS(SELECT 1 FROM vfile v2"
                        " WHERE v2.vid=%d AND v2.pathname=v1.pathname)"
      "UNION "
................................................................................
    int isChnged = db_column_int(&q,2);
    int isNew = db_column_int(&q,3);
    int srcid = db_column_int(&q, 4);
    char *zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
    char *zToFree = zFullName;
    int showDiff = 1;
    if( isDeleted ){
      diff_printf("DELETED  %s\n", zPathname);
      if( !asNewFile ){ showDiff = 0; zFullName = "/dev/null"; }
    }else if( access(zFullName, 0) ){
      diff_printf("MISSING  %s\n", zPathname);
      if( !asNewFile ){ showDiff = 0; }
    }else if( isNew ){
      diff_printf("ADDED    %s\n", zPathname);
      srcid = 0;
      if( !asNewFile ){ showDiff = 0; }
    }else if( isChnged==3 ){
      diff_printf("ADDED_BY_MERGE %s\n", zPathname);
      srcid = 0;
      if( !asNewFile ){ showDiff = 0; }
    }
    if( showDiff ){
      Blob content;
      if( srcid>0 ){
        content_get(srcid, &content);
      }else{
        blob_zero(&content);
      }


      diff_print_index(zPathname);

      diff_file(&content, zFullName, zPathname, zDiffCmd, ignoreEolWs);
      blob_reset(&content);
    }
    free(zToFree);
  }
  db_finalize(&q);
  db_end_transaction(1);  /* ROLLBACK */
................................................................................
  int ignoreEolWs
){
  char *zName;
  Blob fname;
  Blob v1, v2;
  file_tree_name(g.argv[2], &fname, 1);
  zName = blob_str(&fname);
  historical_version_of_file(zFrom, zName, &v1, 0, 0);
  historical_version_of_file(zTo, zName, &v2, 0, 0);
  diff_file_mem(&v1, &v2, zName, zDiffCmd, ignoreEolWs);
  blob_reset(&v1);
  blob_reset(&v2);
  blob_reset(&fname);
}

/*
................................................................................
  struct ManifestFile *pTo,
  const char *zDiffCmd,
  int ignoreEolWs
){
  Blob f1, f2;
  int rid;
  const char *zName =  pFrom ? pFrom->zName : pTo->zName;
  diff_print_index(zName);

  if( pFrom ){
    rid = uuid_to_rid(pFrom->zUuid, 0);
    content_get(rid, &f1);
  }else{
    blob_zero(&f1);
  }
  if( pTo ){
................................................................................
  while( pFromFile || pToFile ){
    int cmp;
    if( pFromFile==0 ){
      cmp = +1;
    }else if( pToFile==0 ){
      cmp = -1;
    }else{
      cmp = fossil_strcmp(pFromFile->zName, pToFile->zName);
    }
    if( cmp<0 ){
      diff_printf("DELETED %s\n", pFromFile->zName);
      if( asNewFlag ){
        diff_manifest_entry(pFromFile, 0, zDiffCmd, ignoreEolWs);
      }
      pFromFile = manifest_file_next(pFrom,0);
    }else if( cmp>0 ){
      diff_printf("ADDED   %s\n", pToFile->zName);
      if( asNewFlag ){
        diff_manifest_entry(0, pToFile, zDiffCmd, ignoreEolWs);
      }
      pToFile = manifest_file_next(pTo,0);
    }else if( fossil_strcmp(pFromFile->zUuid, pToFile->zUuid)==0 ){
      /* No changes */
      pFromFile = manifest_file_next(pFrom,0);
      pToFile = manifest_file_next(pTo,0);
    }else{
      /* diff_printf("CHANGED %s\n", pFromFile->zName); */
      diff_manifest_entry(pFromFile, pToFile, zDiffCmd, ignoreEolWs);
      pFromFile = manifest_file_next(pFrom,0);
      pToFile = manifest_file_next(pTo,0);
    }
  }
  manifest_destroy(pFrom);
  manifest_destroy(pTo);
................................................................................
      diff_one_against_disk(zFrom, zDiffCmd, 0);
    }else{
      diff_all_against_disk(zFrom, zDiffCmd, diffFlags);
    }
  }else if( zFrom==0 ){
    fossil_fatal("must use --from if --to is present");
  }else{
    db_find_and_open_repository(0, 0);
    verify_all_options();
    if( !isInternDiff ){
      zDiffCmd = db_get(isGDiff ? "gdiff-command" : "diff-command", 0);
    }
    if( g.argc==3 ){
      diff_one_two_versions(zFrom, zTo, zDiffCmd, 0);
    }else{
      diff_all_two_versions(zFrom, zTo, zDiffCmd, diffFlags);
    }
  }
}

/*
** WEBPAGE: vpatch
** URL vpatch?from=UUID&amp;to=UUID
*/
void vpatch_page(void){
  const char *zFrom = P("from");
  const char *zTo = P("to");
  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  if( zFrom==0 || zTo==0 ) fossil_redirect_home();

  cgi_set_content_type("text/plain");
  diff_all_two_versions(zFrom, zTo, 0, DIFF_NEWFILE);
}

  static const struct {
    const char *zPrefix;       /* The file prefix */
    int size;                  /* Length of the prefix */
    const char *zMimetype;     /* The corresponding mimetype */
  } aMime[] = {
    { "GIF87a",                  6, "image/gif"  },
    { "GIF89a",                  6, "image/gif"  },
    { "\211PNG\r\n\032\r",       8, "image/png"  },
    { "\377\332\377",            3, "image/jpeg" },
    { "\377\330\377",            3, "image/jpeg" },
  };

  x = (const unsigned char*)blob_buffer(pBlob);
  n = blob_size(pBlob);
  for(i=0; i<n; i++){
................................................................................

  z = zName;
  for(i=0; zName[i]; i++){
    if( zName[i]=='.' ) z = &zName[i+1];
  }
  len = strlen(z);
  if( len<sizeof(zSuffix)-1 ){
    strcpy(zSuffix, z);
    for(i=0; zSuffix[i]; i++) zSuffix[i] = fossil_tolower(zSuffix[i]);
    first = 0;
    last = sizeof(aMime)/sizeof(aMime[0]);
    while( first<=last ){
      int c;
      i = (first+last)/2;
      c = strcmp(zSuffix, aMime[i].zSuffix);
      if( c==0 ) return aMime[i].zMimetype;
      if( c<0 ){
        last = i-1;
      }else{
        first = i+1;
      }
    }
................................................................................
  memcpy(zBaseline, zName, i);
  zBaseline[i] = 0;
  zName += i;
  while( zName[0]=='/' ){ zName++; }
  if( !file_is_simple_pathname(zName) ){
    goto doc_not_found;
  }
  if( strcmp(zBaseline,"ckout")==0 && db_open_local()==0 ){
    strcpy(zBaseline,"tip");
  }
  if( strcmp(zBaseline,"ckout")==0 ){
    /* Read from the local checkout */
    char *zFullpath;
    db_must_be_within_tree();
    zFullpath = mprintf("%s/%s", g.zLocalRoot, zName);
    if( !file_isfile(zFullpath) ){
      goto doc_not_found;
    }
    if( blob_read_from_file(&filebody, zFullpath)<0 ){
      goto doc_not_found;
    }
  }else{
    db_begin_transaction();
    if( strcmp(zBaseline,"tip")==0 ){
      vid = db_int(0, "SELECT objid FROM event WHERE type='ci'"
                      " ORDER BY mtime DESC LIMIT 1");
    }else{
      vid = name_to_rid(zBaseline);
    }

    /* Create the baseline cache if it does not already exist */
................................................................................
  /* The file is now contained in the filebody blob.  Deliver the
  ** file to the user 
  */
  zMime = P("mimetype");
  if( zMime==0 ){
    zMime = mimetype_from_name(zName);
  }





  if( strcmp(zMime, "application/x-fossil-wiki")==0 ){
    Blob title, tail;
    if( wiki_find_title(&filebody, &title, &tail) ){
      style_header(blob_str(&title));
      wiki_convert(&tail, 0, 0);
    }else{
      style_header("Documentation");
      wiki_convert(&filebody, 0, 0);
    }
    style_footer();
  }else if( strcmp(zMime, "text/plain")==0 ){
    style_header("Documentation");
    @ <blockquote><pre>
    @ %h(blob_str(&filebody))
    @ </pre></blockquote>
    style_footer();
  }else{
    cgi_set_content_type(zMime);

  static const struct {
    const char *zPrefix;       /* The file prefix */
    int size;                  /* Length of the prefix */
    const char *zMimetype;     /* The corresponding mimetype */
  } aMime[] = {
    { "GIF87a",                  6, "image/gif"  },
    { "GIF89a",                  6, "image/gif"  },
    { "\211PNG\r\n\032\n",       8, "image/png"  },
    { "\377\332\377",            3, "image/jpeg" },
    { "\377\330\377",            3, "image/jpeg" },
  };

  x = (const unsigned char*)blob_buffer(pBlob);
  n = blob_size(pBlob);
  for(i=0; i<n; i++){
................................................................................

  z = zName;
  for(i=0; zName[i]; i++){
    if( zName[i]=='.' ) z = &zName[i+1];
  }
  len = strlen(z);
  if( len<sizeof(zSuffix)-1 ){
    sqlite3_snprintf(sizeof(zSuffix), zSuffix, "%s", z);
    for(i=0; zSuffix[i]; i++) zSuffix[i] = fossil_tolower(zSuffix[i]);
    first = 0;
    last = sizeof(aMime)/sizeof(aMime[0]);
    while( first<=last ){
      int c;
      i = (first+last)/2;
      c = fossil_strcmp(zSuffix, aMime[i].zSuffix);
      if( c==0 ) return aMime[i].zMimetype;
      if( c<0 ){
        last = i-1;
      }else{
        first = i+1;
      }
    }
................................................................................
  memcpy(zBaseline, zName, i);
  zBaseline[i] = 0;
  zName += i;
  while( zName[0]=='/' ){ zName++; }
  if( !file_is_simple_pathname(zName) ){
    goto doc_not_found;
  }
  if( fossil_strcmp(zBaseline,"ckout")==0 && db_open_local()==0 ){
    sqlite3_snprintf(sizeof(zBaseline), zBaseline, "tip");
  }
  if( fossil_strcmp(zBaseline,"ckout")==0 ){
    /* Read from the local checkout */
    char *zFullpath;
    db_must_be_within_tree();
    zFullpath = mprintf("%s/%s", g.zLocalRoot, zName);
    if( !file_isfile(zFullpath) ){
      goto doc_not_found;
    }
    if( blob_read_from_file(&filebody, zFullpath)<0 ){
      goto doc_not_found;
    }
  }else{
    db_begin_transaction();
    if( fossil_strcmp(zBaseline,"tip")==0 ){
      vid = db_int(0, "SELECT objid FROM event WHERE type='ci'"
                      " ORDER BY mtime DESC LIMIT 1");
    }else{
      vid = name_to_rid(zBaseline);
    }

    /* Create the baseline cache if it does not already exist */
................................................................................
  /* The file is now contained in the filebody blob.  Deliver the
  ** file to the user 
  */
  zMime = P("mimetype");
  if( zMime==0 ){
    zMime = mimetype_from_name(zName);
  }
  Th_Store("doc_name", zName);
  Th_Store("doc_version", db_text(0, "SELECT '[' || substr(uuid,1,10) || ']'"
                                     "  FROM blob WHERE rid=%d", vid));
  Th_Store("doc_date", db_text(0, "SELECT datetime(mtime) FROM event"
                                  " WHERE objid=%d AND type='ci'", vid));
  if( fossil_strcmp(zMime, "application/x-fossil-wiki")==0 ){
    Blob title, tail;
    if( wiki_find_title(&filebody, &title, &tail) ){
      style_header(blob_str(&title));
      wiki_convert(&tail, 0, 0);
    }else{
      style_header("Documentation");
      wiki_convert(&filebody, 0, 0);
    }
    style_footer();
  }else if( fossil_strcmp(zMime, "text/plain")==0 ){
    style_header("Documentation");
    @ <blockquote><pre>
    @ %h(blob_str(&filebody))
    @ </pre></blockquote>
    style_footer();
  }else{
    cgi_set_content_type(zMime);

** case is the same. 
*/
static const char zDecode[] = {
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
   0,  1,  2,  3,  4,  5,  6,  7,   8,  9, 64, 64, 64, 64, 64, 64, 
  64, 10, 11, 12, 13, 14, 15, 64,  64,  1, 64, 64,  1, 64, 64,  0,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 10, 11, 12, 13, 14, 15, 64,  64,  1, 64, 64,  1, 64, 64,  0,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 

** case is the same. 
*/
static const char zDecode[] = {
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
   0,  1,  2,  3,  4,  5,  6,  7,   8,  9, 64, 64, 64, 64, 64, 64, 
  64, 10, 11, 12, 13, 14, 15, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 10, 11, 12, 13, 14, 15, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 

    zATime = db_text(0, "SELECT datetime(%.17g)", pEvent->rDate);
    @ <p>Event [<a href="%s(g.zTop)/artifact/%s(zUuid)">%S(zUuid)</a>] at
    @ [<a href="%s(g.zTop)/timeline?c=%T(zETime)">%s(zETime)</a>]
    @ entered by user <b>%h(pEvent->zUser)</b> on
    @ [<a href="%s(g.zTop)/timeline?c=%T(zATime)">%s(zATime)</a>]:</p>
    @ <blockquote>
    for(i=0; i<pEvent->nTag; i++){
      if( strcmp(pEvent->aTag[i].zName,"+bgcolor")==0 ){
        zClr = pEvent->aTag[i].zValue;
      }
    }
    if( zClr && zClr[0]==0 ) zClr = 0;
    if( zClr ){
      @ <div style="background-color: %h(zClr);">
    }else{
................................................................................
  /* Figure out the color */
  if( rid ){
    zClr = db_text("", "SELECT bgcolor  FROM event WHERE objid=%d", rid);
  }else{
    zClr = "";
  }
  zClr = PD("clr",zClr);
  if( strcmp(zClr,"##")==0 ) zClr = PD("cclr","");


  /* If editing an existing event, extract the key fields to use as
  ** a starting point for the edit.
  */
  if( rid && (zBody==0 || zETime==0 || zComment==0 || zTags==0) ){
    Manifest *pEvent;
................................................................................
    char *zDate;
    Blob cksum;
    int nrid;
    blob_zero(&event);
    db_begin_transaction();
    login_verify_csrf_secret();
    blob_appendf(&event, "C %F\n", zComment);
    zDate = db_text(0, "SELECT datetime('now')");
    zDate[10] = 'T';
    blob_appendf(&event, "D %s\n", zDate);
    free(zDate);
    zETime[10] = 'T';
    blob_appendf(&event, "E %s %s\n", zETime, zEventId);
    zETime[10] = ' ';
    if( rid ){
      char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
................................................................................
    if( g.zLogin ){
      blob_appendf(&event, "U %F\n", g.zLogin);
    }
    blob_appendf(&event, "W %d\n%s\n", strlen(zBody), zBody);
    md5sum_blob(&event, &cksum);
    blob_appendf(&event, "Z %b\n", &cksum);
    blob_reset(&cksum);
    nrid = content_put(&event, 0, 0);
    db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
    manifest_crosslink(nrid, &event);
    blob_reset(&event);
    content_deltify(rid, nrid, 0);
    db_end_transaction(0);
    cgi_redirectf("event?name=%T", zEventId);
  }
  if( P("cancel")!=0 ){
    cgi_redirectf("event?name=%T", zEventId);
    return;
................................................................................
    blob_reset(&event);
  }
  for(n=2, z=zBody; z[0]; z++){
    if( z[0]=='\n' ) n++;
  }
  if( n<20 ) n = 20;
  if( n>40 ) n = 40;
  @ <form method="post" action="%s(g.zBaseURL)/eventedit"><div>
  login_insert_csrf_secret();
  @ <input type="hidden" name="name" value="%h(zEventId)" />
  @ <table border="0" cellspacing="10">

  @ <tr><td align="right" valign="top"><b>Event&nbsp;Time:</b></td>
  @ <td valign="top">
  @   <input type="text" name="t" size="25" value="%h(zETime)" />

    zATime = db_text(0, "SELECT datetime(%.17g)", pEvent->rDate);
    @ <p>Event [<a href="%s(g.zTop)/artifact/%s(zUuid)">%S(zUuid)</a>] at
    @ [<a href="%s(g.zTop)/timeline?c=%T(zETime)">%s(zETime)</a>]
    @ entered by user <b>%h(pEvent->zUser)</b> on
    @ [<a href="%s(g.zTop)/timeline?c=%T(zATime)">%s(zATime)</a>]:</p>
    @ <blockquote>
    for(i=0; i<pEvent->nTag; i++){
      if( fossil_strcmp(pEvent->aTag[i].zName,"+bgcolor")==0 ){
        zClr = pEvent->aTag[i].zValue;
      }
    }
    if( zClr && zClr[0]==0 ) zClr = 0;
    if( zClr ){
      @ <div style="background-color: %h(zClr);">
    }else{
................................................................................
  /* Figure out the color */
  if( rid ){
    zClr = db_text("", "SELECT bgcolor  FROM event WHERE objid=%d", rid);
  }else{
    zClr = "";
  }
  zClr = PD("clr",zClr);
  if( fossil_strcmp(zClr,"##")==0 ) zClr = PD("cclr","");


  /* If editing an existing event, extract the key fields to use as
  ** a starting point for the edit.
  */
  if( rid && (zBody==0 || zETime==0 || zComment==0 || zTags==0) ){
    Manifest *pEvent;
................................................................................
    char *zDate;
    Blob cksum;
    int nrid;
    blob_zero(&event);
    db_begin_transaction();
    login_verify_csrf_secret();
    blob_appendf(&event, "C %F\n", zComment);
    zDate = date_in_standard_format("now");

    blob_appendf(&event, "D %s\n", zDate);
    free(zDate);
    zETime[10] = 'T';
    blob_appendf(&event, "E %s %s\n", zETime, zEventId);
    zETime[10] = ' ';
    if( rid ){
      char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
................................................................................
    if( g.zLogin ){
      blob_appendf(&event, "U %F\n", g.zLogin);
    }
    blob_appendf(&event, "W %d\n%s\n", strlen(zBody), zBody);
    md5sum_blob(&event, &cksum);
    blob_appendf(&event, "Z %b\n", &cksum);
    blob_reset(&cksum);
    nrid = content_put(&event);
    db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
    manifest_crosslink(nrid, &event);
    assert( blob_is_reset(&event) );
    content_deltify(rid, nrid, 0);
    db_end_transaction(0);
    cgi_redirectf("event?name=%T", zEventId);
  }
  if( P("cancel")!=0 ){
    cgi_redirectf("event?name=%T", zEventId);
    return;
................................................................................
    blob_reset(&event);
  }
  for(n=2, z=zBody; z[0]; z++){
    if( z[0]=='\n' ) n++;
  }
  if( n<20 ) n = 20;
  if( n>40 ) n = 40;
  @ <form method="post" action="%s(g.zTop)/eventedit"><div>
  login_insert_csrf_secret();
  @ <input type="hidden" name="name" value="%h(zEventId)" />
  @ <table border="0" cellspacing="10">

  @ <tr><td align="right" valign="top"><b>Event&nbsp;Time:</b></td>
  @ <td valign="top">
  @   <input type="text" name="t" size="25" value="%h(zETime)" />

  db_reset(&q);
}


/*
** COMMAND: export
**
** Usage: %fossil export
**
** Write an export of all check-ins to standard output.  The export is
** written in the Git "fast-import" format.



**
** Run this command within a checkout.  Or use the -R or --repository
** option to specify a Fossil repository to be exported.
**
** Only check-ins are exported.  Git does not support tickets or wiki
** or events or attachments, so none of that is exported.
*/
void export_cmd(void){
  Stmt q;
  int i;

  Bag blobs, vers;
  bag_init(&blobs);
  bag_init(&vers);


  db_find_and_open_repository(1);



  /* Step 1:  Generate "blob" records for every artifact that is part
  ** of a check-in 
  */

  db_prepare(&q, "SELECT DISTINCT fid FROM mlink WHERE fid>0");
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    Blob content;
    content_get(rid, &content);
    printf("blob\nmark :%d\ndata %d\n", rid, blob_size(&content));
    bag_insert(&blobs, rid);
................................................................................
    printf("\n");
    blob_reset(&content);
  }
  db_finalize(&q);

  /* Output the commit records.
  */

  db_prepare(&q,
    "SELECT strftime('%%s',mtime), objid, coalesce(comment,ecomment),"
    "       coalesce(user,euser),"
    "       (SELECT value FROM tagxref WHERE rid=objid AND tagid=%d)"
    "  FROM event"
    " WHERE type='ci'"
    " ORDER BY mtime ASC",
    TAG_BRANCH
  );
  while( db_step(&q)==SQLITE_ROW ){
    sqlite3_int64 secondsSince1970 = db_column_int64(&q, 0);
    int ckinId = db_column_int(&q, 1);
    const char *zComment = db_column_text(&q, 2);
    const char *zUser = db_column_text(&q, 3);
    const char *zBranch = db_column_text(&q, 4);
    char *zBr;
    Manifest *p;
    ManifestFile *pFile;
................................................................................

    bag_insert(&vers, ckinId);
    if( zBranch==0 ) zBranch = "trunk";
    zBr = mprintf("%s", zBranch);
    for(i=0; zBr[i]; i++){
      if( !fossil_isalnum(zBr[i]) ) zBr[i] = '_';
    }
    printf("commit refs/heads/%s\nmark :%d\n", zBr, ckinId);
    free(zBr);
    printf("committer");
    print_person(zUser);
    printf(" %lld +0000\n", secondsSince1970);
    if( zComment==0 ) zComment = "null comment";
    printf("data %d\n%s\n", strlen(zComment), zComment);
    p = manifest_get(ckinId, CFTYPE_ANY);
    zFromType = "from";
    for(i=0; i<p->nParent; i++){
      int pid = fast_uuid_to_rid(p->azParent[i]);
      if( pid==0 || !bag_find(&vers, pid) ) continue;
      printf("%s :%d\n", zFromType, fast_uuid_to_rid(p->azParent[i]));
      zFromType = "merge";
    }
    printf("deleteall\n");
    manifest_file_rewind(p);
    while( (pFile=manifest_file_next(p, 0))!=0 ){
      int fid = fast_uuid_to_rid(pFile->zUuid);
      const char *zPerm = "100644";
      if( fid==0 ) continue;
      if( pFile->zPerm && strstr(pFile->zPerm,"x") ) zPerm = "100755";
      if( !bag_find(&blobs, fid) ) continue;
      printf("M %s :%d %s\n", zPerm, fid, pFile->zName);
    }
    manifest_destroy(p);
    printf("\n");
  }
  db_finalize(&q);
  bag_clear(&blobs);



  /* Output tags */
  db_prepare(&q,
     "SELECT tagname, rid, strftime('%%s',mtime)"
     "  FROM tagxref JOIN tag USING(tagid)"
     " WHERE tagtype=1 AND tagname GLOB 'sym-*'"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTagname = db_column_text(&q, 0);
    int rid = db_column_int(&q, 1);
    sqlite3_int64 secSince1970 = db_column_int64(&q, 2);
    if( rid==0 || !bag_find(&vers, rid) ) continue;
    zTagname += 4;
    printf("tag %s\n", zTagname);
    printf("from :%d\n", rid);
    printf("tagger <tagger> %lld +0000\n", secSince1970);
    printf("data 0\n");
  }
  db_finalize(&q);
  bag_clear(&vers);
}

  db_reset(&q);
}


/*
** COMMAND: export
**
** Usage: %fossil export --git ?REPOSITORY?
**
** Write an export of all check-ins to standard output.  The export is
** written in the git-fast-export file format assuming the --git option is
** provided.  The git-fast-export format is currently the only VCS 
** interchange format supported, though other formats may be added in
** the future.
**
** Run this command within a checkout.  Or use the -R or --repository
** option to specify a Fossil repository to be exported.
**
** Only check-ins are exported using --git.  Git does not support tickets 
** or wiki or events or attachments, so none of those are exported.
*/
void export_cmd(void){
  Stmt q;
  int i;
  int firstCkin;       /* Integer offset to check-in marks */
  Bag blobs, vers;
  bag_init(&blobs);
  bag_init(&vers);

  find_option("git", 0, 0);   /* Ignore the --git option for now */
  db_find_and_open_repository(0, 2);
  verify_all_options();
  if( g.argc!=2 && g.argc!=3 ){ usage("--git ?REPOSITORY?"); }

  /* Step 1:  Generate "blob" records for every artifact that is part
  ** of a check-in 
  */
  fossil_binary_mode(stdout);
  db_prepare(&q, "SELECT DISTINCT fid FROM mlink WHERE fid>0");
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    Blob content;
    content_get(rid, &content);
    printf("blob\nmark :%d\ndata %d\n", rid, blob_size(&content));
    bag_insert(&blobs, rid);
................................................................................
    printf("\n");
    blob_reset(&content);
  }
  db_finalize(&q);

  /* Output the commit records.
  */
  firstCkin = db_int(0, "SELECT max(rid) FROM blob")+1;
  db_prepare(&q,
    "SELECT strftime('%%s',mtime), objid, coalesce(comment,ecomment),"
    "       coalesce(user,euser),"
    "       (SELECT value FROM tagxref WHERE rid=objid AND tagid=%d)"
    "  FROM event"
    " WHERE type='ci'"
    " ORDER BY mtime ASC",
    TAG_BRANCH
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zSecondsSince1970 = db_column_text(&q, 0);
    int ckinId = db_column_int(&q, 1);
    const char *zComment = db_column_text(&q, 2);
    const char *zUser = db_column_text(&q, 3);
    const char *zBranch = db_column_text(&q, 4);
    char *zBr;
    Manifest *p;
    ManifestFile *pFile;
................................................................................

    bag_insert(&vers, ckinId);
    if( zBranch==0 ) zBranch = "trunk";
    zBr = mprintf("%s", zBranch);
    for(i=0; zBr[i]; i++){
      if( !fossil_isalnum(zBr[i]) ) zBr[i] = '_';
    }
    printf("commit refs/heads/%s\nmark :%d\n", zBr, ckinId+firstCkin);
    free(zBr);
    printf("committer");
    print_person(zUser);
    printf(" %s +0000\n", zSecondsSince1970);
    if( zComment==0 ) zComment = "null comment";
    printf("data %d\n%s\n", (int)strlen(zComment), zComment);
    p = manifest_get(ckinId, CFTYPE_ANY);
    zFromType = "from";
    for(i=0; i<p->nParent; i++){
      int pid = fast_uuid_to_rid(p->azParent[i]);
      if( pid==0 || !bag_find(&vers, pid) ) continue;
      printf("%s :%d\n", zFromType, fast_uuid_to_rid(p->azParent[i])+firstCkin);
      zFromType = "merge";
    }
    printf("deleteall\n");
    manifest_file_rewind(p);
    while( (pFile=manifest_file_next(p, 0))!=0 ){
      int fid = fast_uuid_to_rid(pFile->zUuid);
      const char *zPerm = "100644";
      if( fid==0 ) continue;
      if( pFile->zPerm && strstr(pFile->zPerm,"x") ) zPerm = "100755";
      if( !bag_find(&blobs, fid) ) continue;
      printf("M %s :%d %s\n", zPerm, fid, pFile->zName);
    }
    manifest_cache_insert(p);
    printf("\n");
  }
  db_finalize(&q);
  bag_clear(&blobs);
  manifest_cache_clear();


  /* Output tags */
  db_prepare(&q,
     "SELECT tagname, rid, strftime('%%s',mtime)"
     "  FROM tagxref JOIN tag USING(tagid)"
     " WHERE tagtype=1 AND tagname GLOB 'sym-*'"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTagname = db_column_text(&q, 0);
    int rid = db_column_int(&q, 1);
    const char *zSecSince1970 = db_column_text(&q, 2);
    if( rid==0 || !bag_find(&vers, rid) ) continue;
    zTagname += 4;
    printf("tag %s\n", zTagname);
    printf("from :%d\n", rid+firstCkin);
    printf("tagger <tagger> %s +0000\n", zSecSince1970);
    printf("data 0\n");
  }
  db_finalize(&q);
  bag_clear(&vers);
}

    rc = getStat(zFN);
    free(zFN);
  }else{
    rc = getStat(0);
  }
  return rc ? 0 : (S_ISDIR(fileStat.st_mode) ? 1 : 2);
}


























/*
** Return the tail of a file pathname.  The tail is the last component
** of the path.  For example, the tail of "/a/b/c.d" is "c.d".
*/
const char *file_tail(const char *z){
  const char *zTail = z;
................................................................................
    fwrite(zBuf, 1, got, out);
  }
  fclose(in);
  fclose(out);
}

/*
** Set or clear the execute bit on a file.

*/
void file_setexe(const char *zFilename, int onoff){

#if !defined(_WIN32)
  struct stat buf;
  if( stat(zFilename, &buf)!=0 ) return;
  if( onoff ){
    if( (buf.st_mode & 0111)!=0111 ){
      chmod(zFilename, buf.st_mode | 0111);

    }
  }else{
    if( (buf.st_mode & 0111)!=0 ){
      chmod(zFilename, buf.st_mode & ~0111);

    }
  }
#endif /* _WIN32 */

}

/*
** Create the directory named in the argument, if it does not already
** exist.  If forceFlag is 1, delete any prior non-directory object 
** with the same name.
**
................................................................................
        if( z[i+2]=='.' && (z[i+3]=='/' || z[i+3]==0) ) return 0;
      }
    }
  }
  if( z[i-1]=='/' ) return 0;
  return 1;
}
















/*
** Simplify a filename by
**

**  * removing any trailing and duplicate /
**  * removing /./
**  * removing /A/../
**
** Changes are made in-place.  Return the new name length.
*/
int file_simplify_name(char *z, int n){
  int i, j;
  if( n<0 ) n = strlen(z);


#if defined(_WIN32)
  for(i=0; i<n; i++){
    if( z[i]=='\\' ) z[i] = '/';
  }
#endif


  while( n>1 && z[n-1]=='/' ){ n--; }













  for(i=j=0; i<n; i++){
    if( z[i]=='/' ){
      if( z[i+1]=='/' ) continue;

      if( z[i+1]=='.' && (i+2==n || z[i+2]=='/') ){
        i += 1;
        continue;
      }





      if( z[i+1]=='.' && i+2<n && z[i+2]=='.' && (i+3==n || z[i+3]=='/') ){
        while( j>0 && z[j-1]!='/' ){ j--; }
        if( j>0 ){ j--; }


        i += 2;
        continue;
      }
    }
    z[j++] = z[i];

  }

  z[j] = 0;
  return j;
}




















/*
** Compute a canonical pathname for a file or directory.
** Make the name absolute if it is relative.
** Remove redundant / characters
** Remove all /./ path elements.
** Convert /A/../ to just /
................................................................................
  int i;
  Blob x;
  blob_zero(&x);
  for(i=2; i<g.argc; i++){
    char zBuf[100];
    const char *zName = g.argv[i];
    file_canonical_name(zName, &x);
    printf("%s\n", blob_buffer(&x));
    blob_reset(&x);
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", file_size(zName));
    printf("  file_size   = %s\n", zBuf);
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", file_mtime(zName));
    printf("  file_mtime  = %s\n", zBuf);
    printf("  file_isfile = %d\n", file_isfile(zName));
    printf("  file_isexe  = %d\n", file_isexe(zName));
................................................................................
    sqlite3_randomness(15, &zBuf[j]);
    for(i=0; i<15; i++, j++){
      zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
    }
    zBuf[j] = 0;
  }while( access(zBuf,0)==0 );
}

    rc = getStat(zFN);
    free(zFN);
  }else{
    rc = getStat(0);
  }
  return rc ? 0 : (S_ISDIR(fileStat.st_mode) ? 1 : 2);
}

/*
** Find an unused filename similar to zBase with zSuffix appended.
**
** Make the name relative to the working directory if relFlag is true.
**
** Space to hold the new filename is obtained form mprintf() and should
** be freed by the caller.
*/
char *file_newname(const char *zBase, const char *zSuffix, int relFlag){
  char *z = 0;
  int cnt = 0;
  z = mprintf("%s-%s", zBase, zSuffix);
  while( file_size(z)>=0 ){
    fossil_free(z);
    z = mprintf("%s-%s-%d", zBase, zSuffix, cnt++);
  }
  if( relFlag ){
    Blob x;
    file_relative_name(z, &x);
    fossil_free(z);
    z = blob_str(&x);
  }
  return z;
}

/*
** Return the tail of a file pathname.  The tail is the last component
** of the path.  For example, the tail of "/a/b/c.d" is "c.d".
*/
const char *file_tail(const char *z){
  const char *zTail = z;
................................................................................
    fwrite(zBuf, 1, got, out);
  }
  fclose(in);
  fclose(out);
}

/*
** Set or clear the execute bit on a file.  Return true if a change
** occurred and false if this routine is a no-op.
*/
int file_setexe(const char *zFilename, int onoff){
  int rc = 0;
#if !defined(_WIN32)
  struct stat buf;
  if( stat(zFilename, &buf)!=0 ) return 0;
  if( onoff ){
    if( (buf.st_mode & 0111)!=0111 ){
      chmod(zFilename, buf.st_mode | 0111);
      rc = 1;
    }
  }else{
    if( (buf.st_mode & 0111)!=0 ){
      chmod(zFilename, buf.st_mode & ~0111);
      rc = 1;
    }
  }
#endif /* _WIN32 */
  return rc;
}

/*
** Create the directory named in the argument, if it does not already
** exist.  If forceFlag is 1, delete any prior non-directory object 
** with the same name.
**
................................................................................
        if( z[i+2]=='.' && (z[i+3]=='/' || z[i+3]==0) ) return 0;
      }
    }
  }
  if( z[i-1]=='/' ) return 0;
  return 1;
}

/*
** If the last component of the pathname in z[0]..z[j-1] is something
** other than ".." then back it out and return true.  If the last
** component is empty or if it is ".." then return false.
*/
static int backup_dir(const char *z, int *pJ){
  int j = *pJ;
  int i;
  if( j<=0 ) return 0;
  for(i=j-1; i>0 && z[i-1]!='/'; i--){}
  if( z[i]=='.' && i==j-2 && z[i+1]=='.' ) return 0;
  *pJ = i-1;
  return 1;
}

/*
** Simplify a filename by
**
**  * Convert all \ into / on windows
**  * removing any trailing and duplicate /
**  * removing /./
**  * removing /A/../
**
** Changes are made in-place.  Return the new name length.
*/
int file_simplify_name(char *z, int n){
  int i, j;
  if( n<0 ) n = strlen(z);

  /* On windows convert all \ characters to / */
#if defined(_WIN32)
  for(i=0; i<n; i++){
    if( z[i]=='\\' ) z[i] = '/';
  }
#endif

  /* Removing trailing "/" characters */
  while( n>1 && z[n-1]=='/' ){ n--; }

  /* Remove duplicate '/' characters.  Except, two // at the beginning
  ** of a pathname is allowed since this is important on windows. */
  for(i=j=1; i<n; i++){
    z[j++] = z[i];
    while( z[i]=='/' && i<n-1 && z[i+1]=='/' ) i++;
  }
  n = j;

  /* Skip over zero or more initial "./" sequences */
  for(i=0; i<n-1 && z[i]=='.' && z[i+1]=='/'; i+=2){}

  /* Begin copying from z[i] back to z[j]... */
  for(j=0; i<n; i++){
    if( z[i]=='/' ){

      /* Skip over internal "/." directory components */
      if( z[i+1]=='.' && (i+2==n || z[i+2]=='/') ){
        i += 1;
        continue;
      }

      /* If this is a "/.." directory component then back out the
      ** previous term of the directory if it is something other than ".."
      ** or "."
      */
      if( z[i+1]=='.' && i+2<n && z[i+2]=='.' && (i+3==n || z[i+3]=='/')


       && backup_dir(z, &j)
      ){
        i += 2;
        continue;
      }
    }
    if( j>=0 ) z[j] = z[i];
    j++;
  }
  if( j==0 ) z[j++] = '.';
  z[j] = 0;
  return j;
}

/*
** COMMAND: test-simplify-name
**
** %fossil test-simplify-name FILENAME...
**
** Print the simplified versions of each FILENAME.
*/
void cmd_test_simplify_name(void){
  int i;
  char *z;
  for(i=2; i<g.argc; i++){
    z = mprintf("%s", g.argv[i]);
    printf("[%s] -> ", z);
    file_simplify_name(z, -1);
    printf("[%s]\n", z);
    fossil_free(z);
  }
}

/*
** Compute a canonical pathname for a file or directory.
** Make the name absolute if it is relative.
** Remove redundant / characters
** Remove all /./ path elements.
** Convert /A/../ to just /
................................................................................
  int i;
  Blob x;
  blob_zero(&x);
  for(i=2; i<g.argc; i++){
    char zBuf[100];
    const char *zName = g.argv[i];
    file_canonical_name(zName, &x);
    printf("[%s] -> [%s]\n", zName, blob_buffer(&x));
    blob_reset(&x);
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", file_size(zName));
    printf("  file_size   = %s\n", zBuf);
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", file_mtime(zName));
    printf("  file_mtime  = %s\n", zBuf);
    printf("  file_isfile = %d\n", file_isfile(zName));
    printf("  file_isexe  = %d\n", file_isexe(zName));
................................................................................
    sqlite3_randomness(15, &zBuf[j]);
    for(i=0; i<15; i++, j++){
      zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
    }
    zBuf[j] = 0;
  }while( access(zBuf,0)==0 );
}


/*
** Return true if a file named zName exists and has identical content
** to the blob pContent.  If zName does not exist or if the content is
** different in any way, then return false.
*/
int file_is_the_same(Blob *pContent, const char *zName){
  i64 iSize;
  int rc;
  Blob onDisk;

  iSize = file_size(zName);
  if( iSize<0 ) return 0;
  if( iSize!=blob_size(pContent) ) return 0;
  blob_read_from_file(&onDisk, zName);
  rc = blob_compare(&onDisk, pContent);
  blob_reset(&onDisk);
  return rc==0;
}

** a quick status and does not check for up-to-date-ness of the file.
**
** The -p form, there's an optional flag "-r|--revision REVISION".  The
** specified version (or the latest checked out version) is printed to
** stdout.
*/
void finfo_cmd(void){
  int vid;

  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  if( vid==0 ){
    fossil_panic("no checkout to finfo files in");
  }
  vfile_check_signature(vid, 1);
  if (find_option("status","s",0)) {
    Stmt q;
    Blob line;
    Blob fname;


    if( g.argc!=3 ) usage("-s|--status FILENAME");





    file_tree_name(g.argv[2], &fname, 1);
    db_prepare(&q,
        "SELECT pathname, deleted, rid, chnged, coalesce(origname!=pathname,0)"
        "  FROM vfile WHERE vfile.pathname=%B", &fname);
    blob_zero(&line);
    if ( db_step(&q)==SQLITE_ROW ) {
      Blob uuid;
................................................................................
  }else if( find_option("print","p",0) ){
    Blob record;
    Blob fname;
    const char *zRevision = find_option("revision", "r", 1);

    file_tree_name(g.argv[2], &fname, 1);
    if( zRevision ){
      historical_version_of_file(zRevision, blob_str(&fname), &record, 0);
    }else{
      int rid = db_int(0, "SELECT rid FROM vfile WHERE pathname=%B", &fname);
      if( rid==0 ){
        fossil_fatal("no history for file: %b", &fname);
      }
      content_get(rid, &record);
    }
................................................................................
      fossil_fatal("no history for file: %b", &fname);
    }
    zFilename = blob_str(&fname);
    db_prepare(&q,
        "SELECT b.uuid, ci.uuid, date(event.mtime,'localtime'),"
        "       coalesce(event.ecomment, event.comment),"
        "       coalesce(event.euser, event.user)"
        "  FROM mlink, blob b, event, blob ci"
        " WHERE mlink.fnid=(SELECT fnid FROM filename WHERE name=%Q)"

        "   AND b.rid=mlink.fid"
        "   AND event.objid=mlink.mid"
        "   AND event.objid=ci.rid"
        " ORDER BY event.mtime DESC LIMIT %d OFFSET %d",
        zFilename, iLimit, iOffset
    );
    blob_zero(&line);
................................................................................
}


/*
** WEBPAGE: finfo
** URL: /finfo?name=FILENAME
**
** Show the complete change history for a single file. 






*/
void finfo_page(void){
  Stmt q;
  const char *zFilename;
  char zPrevDate[20];



  Blob title;

  GraphContext *pGraph;

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  style_header("File History");
  login_anonymous_available();

  zPrevDate[0] = 0;
  zFilename = PD("name","");
  db_prepare(&q,

    "SELECT"
    " datetime(event.mtime,'localtime'),"            /* Date of change */
    " coalesce(event.ecomment, event.comment),"      /* Check-in comment */
    " coalesce(event.euser, event.user),"            /* User who made chng */
    " mlink.pid,"                                    /* File rid */
    " mlink.fid,"                                    /* Parent file rid */
    " (SELECT uuid FROM blob WHERE rid=mlink.pid),"  /* Parent file uuid */
    " (SELECT uuid FROM blob WHERE rid=mlink.fid),"  /* Current file uuid */
    " (SELECT uuid FROM blob WHERE rid=mlink.mid),"  /* Check-in uuid */
    " event.bgcolor,"                                /* Background color */
    " (SELECT value FROM tagxref WHERE tagid=%d AND tagtype>0"
                                " AND tagxref.rid=mlink.mid)" /* Tags */
    "  FROM mlink, event"
    " WHERE mlink.fnid=(SELECT fnid FROM filename WHERE name=%Q)"
    "   AND event.objid=mlink.mid"
    " ORDER BY event.mtime DESC /*sort*/",
    TAG_BRANCH,
    zFilename
  );












  blob_zero(&title);
  blob_appendf(&title, "History of ");
  hyperlinked_path(zFilename, &title, 0);
  @ <h2>%b(&title)</h2>
  blob_reset(&title);
  pGraph = graph_init();
  @ <div id="canvas" style="position:relative;width:1px;height:1px;"></div>
  @ <table class="timelineTable">
  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);
    const char *zCom = db_column_text(&q, 1);
    const char *zUser = db_column_text(&q, 2);
    int fpid = db_column_int(&q, 3);
    int frid = db_column_int(&q, 4);
    const char *zPUuid = db_column_text(&q, 5);
................................................................................
    const char *zBgClr = db_column_text(&q, 8);
    const char *zBr = db_column_text(&q, 9);
    int gidx;
    char zTime[10];
    char zShort[20];
    char zShortCkin[20];
    if( zBr==0 ) zBr = "trunk";
    gidx = graph_add_row(pGraph, frid, fpid>0 ? 1 : 0, &fpid, zBr, zBgClr);
    if( memcmp(zDate, zPrevDate, 10) ){
      sprintf(zPrevDate, "%.10s", zDate);
      @ <tr><td>
      @   <div class="divider">%s(zPrevDate)</div>
      @ </td></tr>
    }
    memcpy(zTime, &zDate[11], 5);
    zTime[5] = 0;
    @ <tr><td class="timelineTime">
................................................................................
      @ <a href="%s(g.zTop)/annotate?checkin=%S(zCkin)&amp;filename=%h(z)">
      @ [annotate]</a>
    }
    @ </td></tr>
  }
  db_finalize(&q);
  if( pGraph ){
    graph_finish(pGraph, 1);
    if( pGraph->nErr ){
      graph_free(pGraph);
      pGraph = 0;
    }else{

      @ <tr><td></td><td><div style="width:%d(pGraph->mxRail*20+30)px;"></div>
      @     </td></tr>
    }
  }
  @ </table>
  timeline_output_graph_javascript(pGraph);
  style_footer();
}

** a quick status and does not check for up-to-date-ness of the file.
**
** The -p form, there's an optional flag "-r|--revision REVISION".  The
** specified version (or the latest checked out version) is printed to
** stdout.
*/
void finfo_cmd(void){


  db_must_be_within_tree();





  if (find_option("status","s",0)) {
    Stmt q;
    Blob line;
    Blob fname;
    int vid;

    if( g.argc!=3 ) usage("-s|--status FILENAME");
    vid = db_lget_int("checkout", 0);
    if( vid==0 ){
      fossil_panic("no checkout to finfo files in");
    }
    vfile_check_signature(vid, 1, 0);
    file_tree_name(g.argv[2], &fname, 1);
    db_prepare(&q,
        "SELECT pathname, deleted, rid, chnged, coalesce(origname!=pathname,0)"
        "  FROM vfile WHERE vfile.pathname=%B", &fname);
    blob_zero(&line);
    if ( db_step(&q)==SQLITE_ROW ) {
      Blob uuid;
................................................................................
  }else if( find_option("print","p",0) ){
    Blob record;
    Blob fname;
    const char *zRevision = find_option("revision", "r", 1);

    file_tree_name(g.argv[2], &fname, 1);
    if( zRevision ){
      historical_version_of_file(zRevision, blob_str(&fname), &record, 0, 0);
    }else{
      int rid = db_int(0, "SELECT rid FROM vfile WHERE pathname=%B", &fname);
      if( rid==0 ){
        fossil_fatal("no history for file: %b", &fname);
      }
      content_get(rid, &record);
    }
................................................................................
      fossil_fatal("no history for file: %b", &fname);
    }
    zFilename = blob_str(&fname);
    db_prepare(&q,
        "SELECT b.uuid, ci.uuid, date(event.mtime,'localtime'),"
        "       coalesce(event.ecomment, event.comment),"
        "       coalesce(event.euser, event.user)"
        "  FROM mlink, blob b, event, blob ci, filename"
        " WHERE filename.name=%Q"
        "   AND mlink.fnid=filename.fnid"
        "   AND b.rid=mlink.fid"
        "   AND event.objid=mlink.mid"
        "   AND event.objid=ci.rid"
        " ORDER BY event.mtime DESC LIMIT %d OFFSET %d",
        zFilename, iLimit, iOffset
    );
    blob_zero(&line);
................................................................................
}


/*
** WEBPAGE: finfo
** URL: /finfo?name=FILENAME
**
** Show the change history for a single file. 
**
** Additional query parameters:
**
**    a=DATE     Only show changes after DATE
**    b=DATE     Only show changes before DATE
**    n=NUM      Show the first NUM changes only
*/
void finfo_page(void){
  Stmt q;
  const char *zFilename;
  char zPrevDate[20];
  const char *zA;
  const char *zB;
  int n;
  Blob title;
  Blob sql;
  GraphContext *pGraph;

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  style_header("File History");
  login_anonymous_available();

  zPrevDate[0] = 0;
  zFilename = PD("name","");
  blob_zero(&sql);
  blob_appendf(&sql, 
    "SELECT"
    " datetime(event.mtime,'localtime'),"            /* Date of change */
    " coalesce(event.ecomment, event.comment),"      /* Check-in comment */
    " coalesce(event.euser, event.user),"            /* User who made chng */
    " mlink.pid,"                                    /* Parent rid */
    " mlink.fid,"                                    /* File rid */
    " (SELECT uuid FROM blob WHERE rid=mlink.pid),"  /* Parent file uuid */
    " (SELECT uuid FROM blob WHERE rid=mlink.fid),"  /* Current file uuid */
    " (SELECT uuid FROM blob WHERE rid=mlink.mid),"  /* Check-in uuid */
    " event.bgcolor,"                                /* Background color */
    " (SELECT value FROM tagxref WHERE tagid=%d AND tagtype>0"
                                " AND tagxref.rid=mlink.mid)" /* Tags */
    "  FROM mlink, event"
    " WHERE mlink.fnid=(SELECT fnid FROM filename WHERE name=%Q)"
    "   AND event.objid=mlink.mid",

    TAG_BRANCH,
    zFilename
  );
  if( (zA = P("a"))!=0 ){
    blob_appendf(&sql, " AND event.mtime>=julianday('%q')", zA);
  }
  if( (zB = P("b"))!=0 ){
    blob_appendf(&sql, " AND event.mtime<=julianday('%q')", zB);
  }
  blob_appendf(&sql," ORDER BY event.mtime DESC /*sort*/");
  if( (n = atoi(PD("n","0")))>0 ){
    blob_appendf(&sql, " LIMIT %d", n);
  }
  db_prepare(&q, blob_str(&sql));
  blob_reset(&sql);
  blob_zero(&title);
  blob_appendf(&title, "History of ");
  hyperlinked_path(zFilename, &title, 0);
  @ <h2>%b(&title)</h2>
  blob_reset(&title);
  pGraph = graph_init();
  @ <div id="canvas" style="position:relative;width:1px;height:1px;"></div>
  @ <table id="timelineTable" class="timelineTable">
  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);
    const char *zCom = db_column_text(&q, 1);
    const char *zUser = db_column_text(&q, 2);
    int fpid = db_column_int(&q, 3);
    int frid = db_column_int(&q, 4);
    const char *zPUuid = db_column_text(&q, 5);
................................................................................
    const char *zBgClr = db_column_text(&q, 8);
    const char *zBr = db_column_text(&q, 9);
    int gidx;
    char zTime[10];
    char zShort[20];
    char zShortCkin[20];
    if( zBr==0 ) zBr = "trunk";
    gidx = graph_add_row(pGraph, frid, fpid>0 ? 1 : 0, &fpid, zBr, zBgClr, 0);
    if( memcmp(zDate, zPrevDate, 10) ){
      sqlite3_snprintf(sizeof(zPrevDate), zPrevDate, "%.10s", zDate);
      @ <tr><td>
      @   <div class="divider">%s(zPrevDate)</div>
      @ </td></tr>
    }
    memcpy(zTime, &zDate[11], 5);
    zTime[5] = 0;
    @ <tr><td class="timelineTime">
................................................................................
      @ <a href="%s(g.zTop)/annotate?checkin=%S(zCkin)&amp;filename=%h(z)">
      @ [annotate]</a>
    }
    @ </td></tr>
  }
  db_finalize(&q);
  if( pGraph ){
    graph_finish(pGraph, 0);
    if( pGraph->nErr ){
      graph_free(pGraph);
      pGraph = 0;
    }else{
      @ <tr><td></td><td>
      @ <div id="grbtm" style="width:%d(pGraph->mxRail*20+30)px;"></div>
      @     </td></tr>
    }
  }
  @ </table>
  timeline_output_graph_javascript(pGraph, 0);
  style_footer();
}

/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to pattern matching using "glob" syntax.
*/
#include "config.h"
#include "glob.h"
#include <assert.h>

/*
** Construct and return a string which is an SQL expression that will
** be TRUE if value zVal matches any of the GLOB expressions in the list
** zGlobList.  For example:
**
**    zVal:       "x"
**    zGlobList:  "*.o,*.obj"
**
**    Result:     "(x GLOB '*.o' OR x GLOB '*.obj')"
**
** Each element of the GLOB list may optionally be enclosed in either '...'
** or "...".  This allows commas in the expression.  Whitespace at the
** beginning and end of each GLOB pattern is ignored, except when enclosed
** within '...' or "...".
**
** This routine makes no effort to free the memory space it uses.
*/
char *glob_expr(const char *zVal, const char *zGlobList){
  Blob expr;
  char *zSep = "(";
  int nTerm = 0;
  int i;
  int cTerm;

  if( zGlobList==0 || zGlobList[0]==0 ) return "0";
  blob_zero(&expr);
  while( zGlobList[0] ){
    while( fossil_isspace(zGlobList[0]) || zGlobList[0]==',' ) zGlobList++;
    if( zGlobList[0]==0 ) break;
    if( zGlobList[0]=='\'' || zGlobList[0]=='"' ){
      cTerm = zGlobList[0];
      zGlobList++;
    }else{
      cTerm = ',';
    }
    for(i=0; zGlobList[i] && zGlobList[i]!=cTerm; i++){}
    if( cTerm==',' ){
      while( i>0 && fossil_isspace(zGlobList[i-1]) ){ i--; }
    }
    blob_appendf(&expr, "%s%s GLOB '%.*q'", zSep, zVal, i, zGlobList);
    zSep = " OR ";
    if( cTerm!=',' && zGlobList[i] ) i++;
    zGlobList += i;
    if( zGlobList[0] ) zGlobList++;
    nTerm++;
  }
  if( nTerm ){
    blob_appendf(&expr, ")");
    return blob_str(&expr);
  }else{
    return "0";
  }
}

#if INTERFACE
/*
** A Glob object holds a set of patterns read to be matched against
** a string.
*/
struct Glob {
  int nPattern;        /* Number of patterns */
  char **azPattern;    /* Array of pointers to patterns */
};
#endif /* INTERFACE */

/*
** zPatternList is a comma-separate list of glob patterns.  Parse up
** that list and use it to create a new Glob object.
**
** Elements of the glob list may be optionally enclosed in single our
** double-quotes.  This allows a comma to be part of a glob.
**
** Leading and trailing spaces on unquoted glob patterns are ignored.
**
** An empty or null pattern list results in a null glob, which will
** match nothing.
*/
Glob *glob_create(const char *zPatternList){
  int nList;         /* Size of zPatternList in bytes */
  int i, j;          /* Loop counters */
  Glob *p;           /* The glob being created */
  char *z;           /* Copy of the pattern list */
  char delimiter;    /* '\'' or '\"' or 0 */

  if( zPatternList==0 || zPatternList[0]==0 ) return 0;
  nList = strlen(zPatternList);
  p = fossil_malloc( sizeof(*p) + nList+1 );
  memset(p, 0, sizeof(*p));
  z = (char*)&p[1];
  memcpy(z, zPatternList, nList+1);
  while( z[0] ){
    while( z[0]==',' || z[0]==' ' ) z++;  /* Skip leading spaces */
    if( z[0]=='\'' || z[0]=='"' ){
      delimiter = z[0];
      z++;
    }else{
      delimiter = ',';
    }
    if( z[0]==0 ) break;
    p->azPattern = fossil_realloc(p->azPattern, (p->nPattern+1)*sizeof(char*) );
    p->azPattern[p->nPattern++] = z;
    for(i=0; z[i] && z[i]!=delimiter; i++){}
    if( delimiter==',' ){
      /* Remove trailing spaces on a comma-delimited pattern */
      for(j=i; j>1 && z[j-1]==' '; j--){}
      if( j<i ) z[j] = 0;
    }
    if( z[i]==0 ) break;
    z[i] = 0;
    z += i+1;
  }
  return p;
}

/*
** Return non-zero if string z matches glob pattern zGlob and zero if the
** pattern does not match.
**
** Globbing rules:
**
**      '*'       Matches any sequence of zero or more characters.
**
**      '?'       Matches exactly one character.
**
**     [...]      Matches one character from the enclosed list of
**                characters.
**
**     [^...]     Matches one character not in the enclosed list.
*/
int strglob(const char *zGlob, const char *z){
  int c, c2;
  int invert;
  int seen;

  while( (c = (*(zGlob++)))!=0 ){
    if( c=='*' ){
      while( (c=(*(zGlob++))) == '*' || c=='?' ){
        if( c=='?' && (*(z++))==0 ) return 0;
      }
      if( c==0 ){
        return 1;
      }else if( c=='[' ){
        while( *z && strglob(zGlob-1,z)==0 ){
          z++;
        }
        return (*z)!=0;
      }
      while( (c2 = (*(z++)))!=0 ){
        while( c2!=c ){
          c2 = *(z++);
          if( c2==0 ) return 0;
        }
        if( strglob(zGlob,z) ) return 1;
      }
      return 0;
    }else if( c=='?' ){
      if( (*(z++))==0 ) return 0;
    }else if( c=='[' ){
      int prior_c = 0;
      seen = 0;
      invert = 0;
      c = *(z++);
      if( c==0 ) return 0;
      c2 = *(zGlob++);
      if( c2=='^' ){
        invert = 1;
        c2 = *(zGlob++);
      }
      if( c2==']' ){
        if( c==']' ) seen = 1;
        c2 = *(zGlob++);
      }
      while( c2 && c2!=']' ){
        if( c2=='-' && zGlob[0]!=']' && zGlob[0]!=0 && prior_c>0 ){
          c2 = *(zGlob++);
          if( c>=prior_c && c<=c2 ) seen = 1;
          prior_c = 0;
        }else{
          if( c==c2 ){
            seen = 1;
          }
          prior_c = c2;
        }
        c2 = *(zGlob++);
      }
      if( c2==0 || (seen ^ invert)==0 ) return 0;
    }else{
      if( c!=(*(z++)) ) return 0;
    }
  }
  return *z==0;
}

/*
** Return true (non-zero) if zString matches any of the patterns in
** the Glob.  The value returned is actually a 1-basd index of the pattern
** that matched.  Return 0 if none of the patterns match zString.
**
** A NULL glob matches nothing.
*/
int glob_match(Glob *pGlob, const char *zString){
  int i;
  if( pGlob==0 ) return 0;
  for(i=0; i<pGlob->nPattern; i++){
    if( strglob(pGlob->azPattern[i], zString) ) return i+1;
  }
  return 0;
}

/*
** Free all memory associated with the given Glob object
*/
void glob_free(Glob *pGlob){
  if( pGlob ){
    fossil_free(pGlob->azPattern);
    fossil_free(pGlob);
  }
}

/*
** COMMAND: test-glob
**
** Usage:  %fossil test-glob PATTERN STRING...
**
** PATTERN is a comma-separated list of glob patterns.  Show which of
** the STRINGs that follow match the PATTERN.
*/
void glob_test_cmd(void){
  Glob *pGlob;
  int i;
  if( g.argc<4 ) usage("PATTERN STRING ...");
  printf("SQL expression: %s\n", glob_expr("x", g.argv[2]));
  pGlob = glob_create(g.argv[2]);
  for(i=0; i<pGlob->nPattern; i++){
    printf("pattern[%d] = [%s]\n", i, pGlob->azPattern[i]);
  }
  for(i=3; i<g.argc; i++){
    printf("%d %s\n", glob_match(pGlob, g.argv[i]), g.argv[i]);
  }
  glob_free(pGlob);
}

*/
#include "config.h"
#include "graph.h"
#include <assert.h>

#if INTERFACE

#define GR_MAX_PARENT 10      /* Most parents for any one node */
#define GR_MAX_RAIL   32      /* Max number of "rails" to display */

/* The graph appears vertically beside a timeline.  Each row in the
** timeline corresponds to a row in the graph.


*/
struct GraphRow {
  int rid;                    /* The rid for the check-in */
  int nParent;                /* Number of parents */
  int aParent[GR_MAX_PARENT]; /* Array of parents.  0 element is primary .*/
  char *zBranch;              /* Branch name */
  char *zBgClr;               /* Background Color */

  GraphRow *pNext;            /* Next row down in the list of all rows */
  GraphRow *pPrev;            /* Previous row */
  
  int idx;                    /* Row index.  First is 1.  0 used for "none" */
  int idxTop;                 /* Direct descendent highest up on the graph */
  GraphRow *pChild;           /* Child immediately above this node */
  u8 isDup;                   /* True if this is duplicate of a prior entry */
  int iRail;                  /* Which rail this check-in appears on. 0-based.*/
  int aiRaiser[GR_MAX_RAIL];  /* Raisers from this node to a higher row. */
  int bDescender;             /* Raiser from bottom of graph to here. */
  u32 mergeIn;                /* Merge in from other rails */
  int mergeOut;               /* Merge out to this rail */


  int mergeUpto;              /* Draw the merge rail up to this level */


  u32 railInUse;              /* Mask of occupied rails */
};

/* Context while building a graph
*/
struct GraphContext {
  int nErr;                  /* Number of errors encountered */
  int mxRail;                /* Number of rails required to render the graph */
................................................................................
** Create and initialize a GraphContext
*/
GraphContext *graph_init(void){
  return (GraphContext*)safeMalloc( sizeof(GraphContext) );
}

/*
** Destroy a GraphContext;
*/
void graph_free(GraphContext *p){
  int i;
  GraphRow *pRow;
  while( p->pFirst ){
    pRow = p->pFirst;
    p->pFirst = pRow->pNext;
    free(pRow);
  }
  for(i=0; i<p->nBranch; i++) free(p->azBranch[i]);
  free(p->azBranch);
  free(p->apHash);









  free(p);
}

/*
** Insert a row into the hash table.  pRow->rid is the key.  Keys must
** be unique.  If there is already another row with the same rid,
** overwrite the prior entry if and only if the overwrite flag is set.
................................................................................
** equality by comparing pointers.
**
** Note: also used for background color names.
*/
static char *persistBranchName(GraphContext *p, const char *zBranch){
  int i;
  for(i=0; i<p->nBranch; i++){
    if( strcmp(zBranch, p->azBranch[i])==0 ) return p->azBranch[i];
  }
  p->nBranch++;
  p->azBranch = fossil_realloc(p->azBranch, sizeof(char*)*p->nBranch);
  p->azBranch[p->nBranch-1] = mprintf("%s", zBranch);
  return p->azBranch[p->nBranch-1];
}

................................................................................
*/
int graph_add_row(
  GraphContext *p,     /* The context to which the row is added */
  int rid,             /* RID for the check-in */
  int nParent,         /* Number of parents */
  int *aParent,        /* Array of parents */
  const char *zBranch, /* Branch for this check-in */
  const char *zBgClr   /* Background color. NULL or "" for white. */

){
  GraphRow *pRow;


  if( p->nErr ) return 0;
  if( nParent>GR_MAX_PARENT ){ p->nErr++; return 0; }


  pRow = (GraphRow*)safeMalloc( sizeof(GraphRow) );

  pRow->rid = rid;
  pRow->nParent = nParent;
  pRow->zBranch = persistBranchName(p, zBranch);


  if( zBgClr==0 || zBgClr[0]==0 ) zBgClr = "white";
  pRow->zBgClr = persistBranchName(p, zBgClr);
  memcpy(pRow->aParent, aParent, sizeof(aParent[0])*nParent);
  if( p->pFirst==0 ){
    p->pFirst = pRow;
  }else{
    p->pLast->pNext = pRow;
................................................................................
      if( dist<iBestDist ){
        iBestDist = dist;
        iBest = i;
      }
    }
  }
  if( iBestDist>1000 ) p->nErr++;

  return iBest;
}

/*
** Assign all children of node pBottom to the same rail as pBottom.
*/
static void assignChildrenToRail(GraphRow *pBottom){
................................................................................
  pBottom->railInUse |= mask;
  pPrior = pBottom;
  for(pCurrent=pBottom->pChild; pCurrent; pCurrent=pCurrent->pChild){
    assert( pPrior->idx > pCurrent->idx );
    assert( pCurrent->iRail<0 );
    pCurrent->iRail = iRail;
    pCurrent->railInUse |= mask;
    pPrior->aiRaiser[iRail] = pCurrent->idx;
    while( pPrior->idx > pCurrent->idx ){
      pPrior->railInUse |= mask;
      pPrior = pPrior->pPrev;
      assert( pPrior!=0 );
    }
    if( pCurrent->pPrev ){


































      pCurrent->pPrev->railInUse |= mask;

















    }
  }
}


/*
** Compute the complete graph
*/
void graph_finish(GraphContext *p, int omitDescenders){
  GraphRow *pRow, *pDesc, *pDup, *pLoop, *pParent;
  int i;
  u32 mask;
  u32 inUse;
  int hasDup = 0;    /* True if one or more isDup entries */
  const char *zTrunk;

  if( p==0 || p->pFirst==0 || p->nErr ) return;


  /* Initialize all rows */
  p->nHash = p->nRow*2 + 1;
  p->apHash = safeMalloc( sizeof(p->apHash[0])*p->nHash );
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->pNext ) pRow->pNext->pPrev = pRow;
    pRow->iRail = -1;
................................................................................
      hasDup = 1;
      pDup->isDup = 1;
    }
    hashInsert(p, pRow, 1);
  }
  p->mxRail = -1;

  /* Purge merge-parents that are out-of-graph.

  **
  ** Each node has one primary parent and zero or more "merge" parents.
  ** A merge parent is a prior checkin from which changes were merged into
  ** the current check-in.  If a merge parent is not in the visible section
  ** of this graph, then no arrows will be drawn for it, so remove it from
  ** the aParent[] array.
  */

  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    for(i=1; i<pRow->nParent; i++){
      if( hashFind(p, pRow->aParent[i])==0 ){
        pRow->aParent[i] = pRow->aParent[--pRow->nParent];
        i--;

      }
    }
  }


  /* Find the pChild pointer for each node. 
  **
  ** The pChild points to node directly above on the same rail.
  ** The pChild must be in the same branch.  Leaf nodes have a NULL
  ** pChild.
  **
  ** In the case of a fork, choose the pChild that results in the
  ** longest rail.
  */
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->isDup ) continue;
    if( pRow->nParent==0 ) continue;
    pParent = hashFind(p, pRow->aParent[0]);
    if( pParent==0 ) continue;
    if( pParent->zBranch!=pRow->zBranch ) continue;
    if( pParent->idx <= pRow->idx ) continue;



    if( pRow->idxTop < pParent->idxTop ){
      pParent->pChild = pRow;
      pParent->idxTop = pRow->idxTop;
    }
  }

  /* Identify rows where the primary parent is off screen.  Assign
................................................................................
  ** each to a rail and draw descenders to the bottom of the screen.
  **
  ** Strive to put the "trunk" branch on far left.
  */
  zTrunk = persistBranchName(p, "trunk");
  for(i=0; i<2; i++){
    for(pRow=p->pLast; pRow; pRow=pRow->pPrev){

      if( i==0 ){
        if( pRow->zBranch!=zTrunk ) continue;
      }else {
        if( pRow->iRail>=0 ) continue;
      }
      if( pRow->nParent==0 || hashFind(p,pRow->aParent[0])==0 ){
        if( omitDescenders ){
          pRow->iRail = findFreeRail(p, pRow->idxTop, pRow->idx, 0, 0);
        }else{
          pRow->iRail = ++p->mxRail;
        }

        mask = 1<<(pRow->iRail);
        if( omitDescenders ){
          if( pRow->pNext ) pRow->pNext->railInUse |= mask;
        }else{
          pRow->bDescender = pRow->nParent>0;
          for(pLoop=pRow; pLoop; pLoop=pLoop->pNext){
            pLoop->railInUse |= mask;
          }
        }
        assignChildrenToRail(pRow);
      }
................................................................................
  /* Assign rails to all rows that are still unassigned.
  */
  inUse = (1<<(p->mxRail+1))-1;
  for(pRow=p->pLast; pRow; pRow=pRow->pPrev){
    int parentRid;

    if( pRow->iRail>=0 ){


      if( pRow->pChild==0 ) inUse &= ~(1<<pRow->iRail);








      continue;
    }
    if( pRow->isDup ){
      pRow->iRail = findFreeRail(p, pRow->idx, pRow->idx, inUse, 0);
      pDesc = pRow;
      pParent = 0;
    }else{
      assert( pRow->nParent>0 );
      parentRid = pRow->aParent[0];
      pParent = hashFind(p, parentRid);
      if( pParent==0 ){
        /* Time skew */
        pRow->iRail = ++p->mxRail;

        pRow->railInUse = 1<<pRow->iRail;
        continue;
      }



      pRow->iRail = findFreeRail(p, 0, pParent->idx, inUse, pParent->iRail);

      pParent->aiRaiser[pRow->iRail] = pRow->idx;













    }


    mask = 1<<pRow->iRail;
    if( pRow->pPrev ) pRow->pPrev->railInUse |= mask;
    if( pRow->pNext ) pRow->pNext->railInUse |= mask;
    if( pRow->pChild==0 ){
      inUse &= ~mask;
    }else{
      inUse |= mask;
      assignChildrenToRail(pRow);
    }
    if( pParent ){
      for(pLoop=pParent; pLoop && pLoop!=pRow; pLoop=pLoop->pPrev){
        pLoop->railInUse |= mask;
      }
    }
  }

  /*
  ** Insert merge rails and merge arrows
  */
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    for(i=1; i<pRow->nParent; i++){
      int parentRid = pRow->aParent[i];
      pDesc = hashFind(p, parentRid);
      if( pDesc==0 ) continue;
      if( pDesc->mergeOut<0 ){
        int iTarget = (pRow->iRail + pDesc->iRail)/2;
        pDesc->mergeOut = findFreeRail(p, pRow->idx, pDesc->idx, 0, iTarget);
        pDesc->mergeUpto = pRow->idx;
        mask = 1<<pDesc->mergeOut;
        pDesc->railInUse |= mask;
        for(pLoop=pRow->pNext; pLoop && pLoop->rid!=parentRid;
             pLoop=pLoop->pNext){
          pLoop->railInUse |= mask;
        }
      }
      pRow->mergeIn |= 1<<pDesc->mergeOut;


    }
  }

  /*
  ** Insert merge rails from primaries to duplicates. 
  */
  if( hasDup ){






    for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
      if( !pRow->isDup ) continue;

      pDesc = hashFind(p, pRow->rid);
      assert( pDesc!=0 && pDesc!=pRow );

      if( pDesc->mergeOut<0 ){
        int iTarget = (pRow->iRail + pDesc->iRail)/2;
        pDesc->mergeOut = findFreeRail(p, pRow->idx, pDesc->idx, 0, iTarget);
        pDesc->mergeUpto = pRow->idx;
        mask = 1<<pDesc->mergeOut;
        pDesc->railInUse |= mask;
        for(pLoop=pRow->pNext; pLoop && pLoop!=pDesc; pLoop=pLoop->pNext){
          pLoop->railInUse |= mask;
        }




      }
      pRow->mergeIn |= 1<<pDesc->mergeOut;
    }

  }

  /*
  ** Find the maximum rail number.
  */

  p->mxRail = 0;
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->iRail>p->mxRail ) p->mxRail = pRow->iRail;
    if( pRow->mergeOut>p->mxRail ) p->mxRail = pRow->mergeOut;
  }
}

*/
#include "config.h"
#include "graph.h"
#include <assert.h>

#if INTERFACE


#define GR_MAX_RAIL   32      /* Max number of "rails" to display */

/* The graph appears vertically beside a timeline.  Each row in the
** timeline corresponds to a row in the graph.  GraphRow.idx is 0 for
** the top-most row and increases moving down.  Hence (in the absence of
** time skew) parents have a larger index than their children.
*/
struct GraphRow {
  int rid;                    /* The rid for the check-in */
  i8 nParent;                 /* Number of parents */
  int *aParent;               /* Array of parents.  0 element is primary .*/
  char *zBranch;              /* Branch name */
  char *zBgClr;               /* Background Color */

  GraphRow *pNext;            /* Next row down in the list of all rows */
  GraphRow *pPrev;            /* Previous row */
  
  int idx;                    /* Row index.  First is 1.  0 used for "none" */
  int idxTop;                 /* Direct descendent highest up on the graph */
  GraphRow *pChild;           /* Child immediately above this node */
  u8 isDup;                   /* True if this is duplicate of a prior entry */
  u8 isLeaf;                  /* True if this is a leaf node */
  u8 timeWarp;                /* Child is earlier in time */
  u8 bDescender;              /* True if riser from bottom of graph to here. */
  i8 iRail;                   /* Which rail this check-in appears on. 0-based.*/
  i8 mergeOut;                /* Merge out to this rail.  -1 if no merge-out */
  u8 mergeIn[GR_MAX_RAIL];    /* Merge in from non-zero rails */
  int aiRiser[GR_MAX_RAIL];   /* Risers from this node to a higher row. */
  int mergeUpto;              /* Draw the mergeOut rail up to this level */
  u32 mergeDown;              /* Draw merge lines up from bottom of graph */

  u32 railInUse;              /* Mask of occupied rails at this row */
};

/* Context while building a graph
*/
struct GraphContext {
  int nErr;                  /* Number of errors encountered */
  int mxRail;                /* Number of rails required to render the graph */
................................................................................
** Create and initialize a GraphContext
*/
GraphContext *graph_init(void){
  return (GraphContext*)safeMalloc( sizeof(GraphContext) );
}

/*
** Clear all content from a graph
*/
static void graph_clear(GraphContext *p){
  int i;
  GraphRow *pRow;
  while( p->pFirst ){
    pRow = p->pFirst;
    p->pFirst = pRow->pNext;
    free(pRow);
  }
  for(i=0; i<p->nBranch; i++) free(p->azBranch[i]);
  free(p->azBranch);
  free(p->apHash);
  memset(p, 0, sizeof(*p));
  p->nErr = 1;
}

/*
** Destroy a GraphContext;
*/
void graph_free(GraphContext *p){
  graph_clear(p);
  free(p);
}

/*
** Insert a row into the hash table.  pRow->rid is the key.  Keys must
** be unique.  If there is already another row with the same rid,
** overwrite the prior entry if and only if the overwrite flag is set.
................................................................................
** equality by comparing pointers.
**
** Note: also used for background color names.
*/
static char *persistBranchName(GraphContext *p, const char *zBranch){
  int i;
  for(i=0; i<p->nBranch; i++){
    if( fossil_strcmp(zBranch, p->azBranch[i])==0 ) return p->azBranch[i];
  }
  p->nBranch++;
  p->azBranch = fossil_realloc(p->azBranch, sizeof(char*)*p->nBranch);
  p->azBranch[p->nBranch-1] = mprintf("%s", zBranch);
  return p->azBranch[p->nBranch-1];
}

................................................................................
*/
int graph_add_row(
  GraphContext *p,     /* The context to which the row is added */
  int rid,             /* RID for the check-in */
  int nParent,         /* Number of parents */
  int *aParent,        /* Array of parents */
  const char *zBranch, /* Branch for this check-in */
  const char *zBgClr,  /* Background color. NULL or "" for white. */
  int isLeaf           /* True if this row is a leaf */
){
  GraphRow *pRow;
  int nByte;

  if( p->nErr ) return 0;

  nByte = sizeof(GraphRow);
  nByte += sizeof(pRow->aParent[0])*nParent;
  pRow = (GraphRow*)safeMalloc( nByte );
  pRow->aParent = (int*)&pRow[1];
  pRow->rid = rid;
  pRow->nParent = nParent;
  pRow->zBranch = persistBranchName(p, zBranch);
  pRow->isLeaf = isLeaf;
  memset(pRow->aiRiser, -1, sizeof(pRow->aiRiser));
  if( zBgClr==0 || zBgClr[0]==0 ) zBgClr = "white";
  pRow->zBgClr = persistBranchName(p, zBgClr);
  memcpy(pRow->aParent, aParent, sizeof(aParent[0])*nParent);
  if( p->pFirst==0 ){
    p->pFirst = pRow;
  }else{
    p->pLast->pNext = pRow;
................................................................................
      if( dist<iBestDist ){
        iBestDist = dist;
        iBest = i;
      }
    }
  }
  if( iBestDist>1000 ) p->nErr++;
  if( iBest>p->mxRail ) p->mxRail = iBest;
  return iBest;
}

/*
** Assign all children of node pBottom to the same rail as pBottom.
*/
static void assignChildrenToRail(GraphRow *pBottom){
................................................................................
  pBottom->railInUse |= mask;
  pPrior = pBottom;
  for(pCurrent=pBottom->pChild; pCurrent; pCurrent=pCurrent->pChild){
    assert( pPrior->idx > pCurrent->idx );
    assert( pCurrent->iRail<0 );
    pCurrent->iRail = iRail;
    pCurrent->railInUse |= mask;
    pPrior->aiRiser[iRail] = pCurrent->idx;
    while( pPrior->idx > pCurrent->idx ){
      pPrior->railInUse |= mask;
      pPrior = pPrior->pPrev;
      assert( pPrior!=0 );
    }

  }
}

/*
** Create a merge-arrow riser going from pParent up to pChild.
*/
static void createMergeRiser(
  GraphContext *p,
  GraphRow *pParent,
  GraphRow *pChild
){
  int u;
  u32 mask;
  GraphRow *pLoop;

  if( pParent->mergeOut<0 ){
    u = pParent->aiRiser[pParent->iRail];
    if( u>=0 && u<pChild->idx ){
      /* The thick arrow up to the next primary child of pDesc goes
      ** further up than the thin merge arrow riser, so draw them both
      ** on the same rail. */
      pParent->mergeOut = pParent->iRail*4;
      if( pParent->iRail<pChild->iRail ) pParent->mergeOut += 2;
      pParent->mergeUpto = pChild->idx;
    }else{
      /* The thin merge arrow riser is taller than the thick primary
      ** child riser, so use separate rails. */
      int iTarget = pParent->iRail;
      pParent->mergeOut = findFreeRail(p, pChild->idx, pParent->idx-1,
                                       0, iTarget)*4 + 1;
      pParent->mergeUpto = pChild->idx;
      mask = 1<<(pParent->mergeOut/4);
      for(pLoop=pChild->pNext; pLoop && pLoop->rid!=pParent->rid;
           pLoop=pLoop->pNext){
        pLoop->railInUse |= mask;
      }
    }
  }
  pChild->mergeIn[pParent->mergeOut/4] = (pParent->mergeOut&3)+1;
}

/*
** Compute the maximum rail number.
*/
static void find_max_rail(GraphContext *p){
  GraphRow *pRow;
  p->mxRail = 0;
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->iRail>p->mxRail ) p->mxRail = pRow->iRail;
    if( pRow->mergeOut/4>p->mxRail ) p->mxRail = pRow->mergeOut/4;
    while( p->mxRail<GR_MAX_RAIL && pRow->mergeDown>((1<<(p->mxRail+1))-1) ){
      p->mxRail++;
    }
  }
}


/*
** Compute the complete graph
*/
void graph_finish(GraphContext *p, int omitDescenders){
  GraphRow *pRow, *pDesc, *pDup, *pLoop, *pParent;
  int i;
  u32 mask;
  u32 inUse;
  int hasDup = 0;      /* True if one or more isDup entries */
  const char *zTrunk;

  if( p==0 || p->pFirst==0 || p->nErr ) return;
  p->nErr = 1;   /* Assume an error until proven otherwise */

  /* Initialize all rows */
  p->nHash = p->nRow*2 + 1;
  p->apHash = safeMalloc( sizeof(p->apHash[0])*p->nHash );
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->pNext ) pRow->pNext->pPrev = pRow;
    pRow->iRail = -1;
................................................................................
      hasDup = 1;
      pDup->isDup = 1;
    }
    hashInsert(p, pRow, 1);
  }
  p->mxRail = -1;

  /* Purge merge-parents that are out-of-graph if descenders are not
  ** drawn.
  **
  ** Each node has one primary parent and zero or more "merge" parents.
  ** A merge parent is a prior checkin from which changes were merged into
  ** the current check-in.  If a merge parent is not in the visible section
  ** of this graph, then no arrows will be drawn for it, so remove it from
  ** the aParent[] array.
  */
  if( omitDescenders ){
    for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
      for(i=1; i<pRow->nParent; i++){
        if( hashFind(p, pRow->aParent[i])==0 ){
          pRow->aParent[i] = pRow->aParent[--pRow->nParent];
          i--;
        }
      }
    }
  }


  /* Find the pChild pointer for each node. 
  **
  ** The pChild points to the node directly above on the same rail.
  ** The pChild must be in the same branch.  Leaf nodes have a NULL
  ** pChild.
  **
  ** In the case of a fork, choose the pChild that results in the
  ** longest rail.
  */
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->isDup ) continue;
    if( pRow->nParent==0 ) continue;                   /* Root node */
    pParent = hashFind(p, pRow->aParent[0]);
    if( pParent==0 ) continue;                         /* Parent off-screen */
    if( pParent->zBranch!=pRow->zBranch ) continue;    /* Different branch */
    if( pParent->idx <= pRow->idx ){
       pParent->timeWarp = 1;
       continue;                                       /* Time-warp */
    }
    if( pRow->idxTop < pParent->idxTop ){
      pParent->pChild = pRow;
      pParent->idxTop = pRow->idxTop;
    }
  }

  /* Identify rows where the primary parent is off screen.  Assign
................................................................................
  ** each to a rail and draw descenders to the bottom of the screen.
  **
  ** Strive to put the "trunk" branch on far left.
  */
  zTrunk = persistBranchName(p, "trunk");
  for(i=0; i<2; i++){
    for(pRow=p->pLast; pRow; pRow=pRow->pPrev){
      if( pRow->isDup ) continue;
      if( i==0 ){
        if( pRow->zBranch!=zTrunk ) continue;
      }else {
        if( pRow->iRail>=0 ) continue;
      }
      if( pRow->nParent==0 || hashFind(p,pRow->aParent[0])==0 ){
        if( omitDescenders ){
          pRow->iRail = findFreeRail(p, pRow->idxTop, pRow->idx, 0, 0);
        }else{
          pRow->iRail = ++p->mxRail;
        }
        if( p->mxRail>=GR_MAX_RAIL ) return;
        mask = 1<<(pRow->iRail);
        if( !omitDescenders ){


          pRow->bDescender = pRow->nParent>0;
          for(pLoop=pRow; pLoop; pLoop=pLoop->pNext){
            pLoop->railInUse |= mask;
          }
        }
        assignChildrenToRail(pRow);
      }
................................................................................
  /* Assign rails to all rows that are still unassigned.
  */
  inUse = (1<<(p->mxRail+1))-1;
  for(pRow=p->pLast; pRow; pRow=pRow->pPrev){
    int parentRid;

    if( pRow->iRail>=0 ){
      if( pRow->pChild==0 && !pRow->timeWarp ){
        if( omitDescenders || count_nonbranch_children(pRow->rid)==0 ){
          inUse &= ~(1<<pRow->iRail);
        }else{
          pRow->aiRiser[pRow->iRail] = 0;
          mask = 1<<pRow->iRail;
          for(pLoop=pRow; pLoop; pLoop=pLoop->pPrev){
            pLoop->railInUse |= mask;
          }
        }
      }
      continue;
    }
    if( pRow->isDup ){
      continue;


    }else{
      assert( pRow->nParent>0 );
      parentRid = pRow->aParent[0];
      pParent = hashFind(p, parentRid);
      if( pParent==0 ){

        pRow->iRail = ++p->mxRail;
        if( p->mxRail>=GR_MAX_RAIL ) return;
        pRow->railInUse = 1<<pRow->iRail;
        continue;
      }
      if( pParent->idx>pRow->idx ){
        /* Common case:  Child occurs after parent and is above the
        ** parent in the timeline */
        pRow->iRail = findFreeRail(p, 0, pParent->idx, inUse, pParent->iRail);
        if( p->mxRail>=GR_MAX_RAIL ) return;
        pParent->aiRiser[pRow->iRail] = pRow->idx;
      }else{
        /* Timewarp case:  Child occurs earlier in time than parent and
        ** appears below the parent in the timeline. */
        int iDownRail = ++p->mxRail;
        if( iDownRail<1 ) iDownRail = ++p->mxRail;
        pRow->iRail = ++p->mxRail;
        if( p->mxRail>=GR_MAX_RAIL ) return;
        pRow->railInUse = 1<<pRow->iRail;
        pParent->aiRiser[iDownRail] = pRow->idx;
        mask = 1<<iDownRail;
        inUse |= mask;
        for(pLoop=p->pFirst; pLoop; pLoop=pLoop->pNext){
          pLoop->railInUse |= mask;
        }
      }
    }
    mask = 1<<pRow->iRail;
    pRow->railInUse |= mask;

    if( pRow->pChild==0 ){
      inUse &= ~mask;
    }else{
      inUse |= mask;
      assignChildrenToRail(pRow);
    }
    if( pParent ){
      for(pLoop=pParent->pPrev; pLoop && pLoop!=pRow; pLoop=pLoop->pPrev){
        pLoop->railInUse |= mask;
      }
    }
  }

  /*
  ** Insert merge rails and merge arrows
  */
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    for(i=1; i<pRow->nParent; i++){
      int parentRid = pRow->aParent[i];
      pDesc = hashFind(p, parentRid);
      if( pDesc==0 ){
        /* Merge from a node that is off-screen */
        int iMrail = findFreeRail(p, pRow->idx, p->nRow, 0, 0);
        if( p->mxRail>=GR_MAX_RAIL ) return;
        mask = 1<<iMrail;
        pRow->mergeIn[iMrail] = 2;
        pRow->mergeDown |= mask;
        for(pLoop=pRow->pNext; pLoop; pLoop=pLoop->pNext){
          pLoop->railInUse |= mask;
        }
      }else{
        /* Merge from an on-screen node */
        createMergeRiser(p, pDesc, pRow);
        if( p->mxRail>=GR_MAX_RAIL ) return;
      }
    }
  }

  /*
  ** Insert merge rails from primaries to duplicates. 
  */
  if( hasDup ){
    int dupRail;
    int mxRail;
    find_max_rail(p);
    mxRail = p->mxRail;
    dupRail = mxRail+1;
    if( p->mxRail>=GR_MAX_RAIL ) return;
    for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
      if( !pRow->isDup ) continue;
      pRow->iRail = dupRail;
      pDesc = hashFind(p, pRow->rid);
      assert( pDesc!=0 && pDesc!=pRow );
      createMergeRiser(p, pDesc, pRow);
      if( pDesc->mergeOut/4>mxRail ) mxRail = pDesc->mergeOut/4;







    }
    if( dupRail<=mxRail ){
      dupRail = mxRail+1;
      for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
        if( pRow->isDup ) pRow->iRail = dupRail;
      }

    }
    if( mxRail>=GR_MAX_RAIL ) return;
  }

  /*
  ** Find the maximum rail number.
  */
  find_max_rail(p);
  p->nErr = 0;



}

/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to incrementally generate a GZIP compressed
** file.  The GZIP format is described in RFC-1952.
**
** State information is stored in static variables, so this implementation
** can only be building up a single GZIP file at a time.
*/
#include <assert.h>
#include <zlib.h>
#include "config.h"
#include "gzip.h"

/*
** State information for the GZIP file under construction.
*/
struct gzip_state {
  int eState;           /* 0: idle   1: header  2: compressing */
  int iCRC;             /* The checksum */
  z_stream stream;      /* The working compressor */
  Blob out;             /* Results stored here */
} gzip;

/*
** Write a 32-bit integer as little-endian into the given buffer.
*/
static void put32(char *z, int v){
  z[0] = v & 0xff;
  z[1] = (v>>8) & 0xff;
  z[2] = (v>>16) & 0xff;
  z[3] = (v>>24) & 0xff;
}

/*
** Begin constructing a gzip file.
*/
void gzip_begin(void){
  char aHdr[10];
  sqlite3_int64 now;
  assert( gzip.eState==0 );
  blob_zero(&gzip.out);
  aHdr[0] = 0x1f;
  aHdr[1] = 0x8b;
  aHdr[2] = 8;
  aHdr[3] = 0;
  now = db_int64(0, "SELECT (julianday('now') - 2440587.5)*86400.0");
  put32(&aHdr[4], now&0xffffffff);
  aHdr[8] = 2;
  aHdr[9] = 255;
  blob_append(&gzip.out, aHdr, 10);
  gzip.iCRC = 0;
  gzip.eState = 1;
}

/*
** Add nIn bytes of content from pIn to the gzip file.
*/
#define GZIP_BUFSZ 100000
void gzip_step(const char *pIn, int nIn){
  char *zOutBuf;
  int nOut;
  
  nOut = nIn + nIn/10 + 100;
  if( nOut<100000 ) nOut = 100000;
  zOutBuf = fossil_malloc(nOut);
  gzip.stream.avail_in = nIn;
  gzip.stream.next_in = (unsigned char*)pIn;
  gzip.stream.avail_out = nOut;
  gzip.stream.next_out = (unsigned char*)zOutBuf;
  if( gzip.eState==1 ){
    gzip.stream.zalloc = (alloc_func)0;
    gzip.stream.zfree = (free_func)0;
    gzip.stream.opaque = 0;
    deflateInit2(&gzip.stream, 9, Z_DEFLATED, -MAX_WBITS,8,Z_DEFAULT_STRATEGY);
    gzip.eState = 2;
  }
  gzip.iCRC = crc32(gzip.iCRC, gzip.stream.next_in, gzip.stream.avail_in);
  do{
    deflate(&gzip.stream, nIn==0 ? Z_FINISH : 0);
    blob_append(&gzip.out, zOutBuf, nOut - gzip.stream.avail_out);
    gzip.stream.avail_out = nOut;
    gzip.stream.next_out = (unsigned char*)zOutBuf;
  }while( gzip.stream.avail_in>0 );
  fossil_free(zOutBuf);
}

/*
** Finish the gzip file and put the content in *pOut
*/
void gzip_finish(Blob *pOut){
  char aTrailer[8];
  assert( gzip.eState>0 );
  gzip_step("", 0);
  deflateEnd(&gzip.stream);
  put32(aTrailer, gzip.iCRC);
  put32(&aTrailer[4], gzip.stream.total_in);
  blob_append(&gzip.out, aTrailer, 8);
  *pOut = gzip.out;
  blob_zero(&gzip.out);
  gzip.eState = 0;
}

/*
** COMMAND: test-gzip
**
** Usage: %fossil test-gzip FILENAME
**
** Compress a file using gzip.
*/
void test_gzip_cmd(void){
  Blob b;
  char *zOut;
  if( g.argc!=3 ) usage("FILENAME");
  sqlite3_open(":memory:", &g.db);
  gzip_begin();
  blob_read_from_file(&b, g.argv[2]);
  zOut = mprintf("%s.gz", g.argv[2]);
  gzip_step(blob_buffer(&b), blob_size(&b));
  blob_reset(&b);
  gzip_finish(&b);
  blob_write_to_file(&b, zOut);
  blob_reset(&b);
  fossil_free(zOut);
}

    zPw = 0;
  }else{
    /* Password failure while doing a sync from the command-line interface */
    url_prompt_for_password();
    zPw = g.urlPasswd;
    if( !g.dontKeepUrl ) db_set("last-sync-pw", obscure(zPw), 0);
  }







  /* The login card wants the SHA1 hash of the password, so convert the
  ** password to its SHA1 hash it it isn't already a SHA1 hash.
  **
  ** Except, if the password begins with "*" then use the characters
  ** after the "*" as a cleartext password.  Put an "*" at the beginning
  ** of the password to trick a newer client to use the cleartext password
  ** protocol required by legacy servers.
  */
  if( zPw && zPw[0] ){
    if( zPw[0]=='*' ){
      zPw++;
    }else{
      zPw = sha1_shared_secret(zPw, zLogin);
    }
  }

  blob_append(&pw, zPw, -1);
  sha1sum_blob(&pw, &sig);
  blob_appendf(pLogin, "login %F %b %b\n", zLogin, &nonce, &sig);
  blob_reset(&pw);
  blob_reset(&sig);
  blob_reset(&nonce);
................................................................................
  if( i>0 && g.urlPath[i-1]=='/' ){
    zSep = "";
  }else{
    zSep = "/";
  }
  blob_appendf(pHdr, "POST %s%sxfer/xfer HTTP/1.0\r\n", g.urlPath, zSep);
  if( g.urlProxyAuth ){
    blob_appendf(pHdr, "Proxy-Authorization: %s\n", g.urlProxyAuth);







  }
  blob_appendf(pHdr, "Host: %s\r\n", g.urlHostname);
  blob_appendf(pHdr, "User-Agent: Fossil/" MANIFEST_VERSION "\r\n");
  if( g.fHttpTrace ){
    blob_appendf(pHdr, "Content-Type: application/x-fossil-debug\r\n");
  }else{
    blob_appendf(pHdr, "Content-Type: application/x-fossil\r\n");
................................................................................
** in pRecv.  pRecv is assumed to be uninitialized when
** this routine is called - this routine will initialize it.
**
** The server address is contain in the "g" global structure.  The
** url_parse() routine should have been called prior to this routine
** in order to fill this structure appropriately.
*/
void http_exchange(Blob *pSend, Blob *pReply, int useLogin){
  Blob login;           /* The login card */
  Blob payload;         /* The complete payload including login card */
  Blob hdr;             /* The HTTP request header */
  int closeConnection;  /* True to close the connection when done */
  int iLength;          /* Length of the reply payload */
  int rc;               /* Result code */
  int iHttpVersion;     /* Which version of HTTP protocol server uses */
  char *zLine;          /* A single line of the reply header */
  int i;                /* Loop counter */
  int isError = 0;      /* True if the reply is an error message */


  if( transport_open() ){
    fossil_fatal(transport_errmsg());

  }

  /* Construct the login card and prepare the complete payload */
  blob_zero(&login);
  if( useLogin ) http_build_login_card(pSend, &login);
  if( g.fHttpTrace ){
    payload = login;
................................................................................
  /* Construct the HTTP request header */
  http_build_header(&payload, &hdr);

  /* When tracing, write the transmitted HTTP message both to standard
  ** output and into a file.  The file can then be used to drive the
  ** server-side like this:
  **
  **      ./fossil http <http-trace-1.txt
  */
  if( g.fHttpTrace ){
    static int traceCnt = 0;
    char *zOutFile;
    FILE *out;
    traceCnt++;
    zOutFile = mprintf("http-trace-%d.txt", traceCnt);
    printf("HTTP SEND: (%s)\n%s%s=======================\n", 
        zOutFile, blob_str(&hdr), blob_str(&payload));
    out = fopen(zOutFile, "w");
    if( out ){
      fwrite(blob_buffer(&hdr), 1, blob_size(&hdr), out);
      fwrite(blob_buffer(&payload), 1, blob_size(&payload), out);
      fclose(out);
    }





  }

  /*
  ** Send the request to the server.
  */
  transport_send(&hdr);
  transport_send(&payload);
................................................................................
  /*
  ** Read and interpret the server reply
  */
  closeConnection = 1;
  iLength = -1;
  while( (zLine = transport_receive_line())!=0 && zLine[0]!=0 ){
    /* printf("[%s]\n", zLine); fflush(stdout); */
    if( strncasecmp(zLine, "http/1.", 7)==0 ){
      if( sscanf(zLine, "HTTP/1.%d %d", &iHttpVersion, &rc)!=2 ) goto write_err;
      if( rc!=200 && rc!=302 ){
        int ii;
        for(ii=7; zLine[ii] && zLine[ii]!=' '; ii++){}
        while( zLine[ii]==' ' ) ii++;
        fossil_fatal("server says: %s\n", &zLine[ii]);
        goto write_err;
      }
      if( iHttpVersion==0 ){
        closeConnection = 1;
      }else{
        closeConnection = 0;
      }
    }else if( strncasecmp(zLine, "content-length:", 15)==0 ){
      for(i=15; fossil_isspace(zLine[i]); i++){}
      iLength = atoi(&zLine[i]);
    }else if( strncasecmp(zLine, "connection:", 11)==0 ){
      char c;
      for(i=11; fossil_isspace(zLine[i]); i++){}
      c = zLine[i];
      if( c=='c' || c=='C' ){
        closeConnection = 1;
      }else if( c=='k' || c=='K' ){
        closeConnection = 0;
      }
    }else if( rc==302 && strncasecmp(zLine, "location:", 9)==0 ){
      int i, j;
      for(i=9; zLine[i] && zLine[i]==' '; i++){}
      if( zLine[i]==0 ) fossil_fatal("malformed redirect: %s", zLine);
      j = strlen(zLine) - 1; 
      while( j>4 && strcmp(&zLine[j-4],"/xfer")==0 ){
         j -= 4;
         zLine[j] = 0;
      }
      fossil_print("redirect to %s\n", &zLine[i]);
      url_parse(&zLine[i]);
      transport_close();
      http_exchange(pSend, pReply, useLogin);
      return;
    }else if( strncasecmp(zLine, "content-type: text/html", 23)==0 ){






      isError = 1;

    }
  }
  if( rc!=200 ){
    fossil_fatal("\"location:\" missing from 302 redirect reply");
    goto write_err;
  }

  /*
  ** Extract the reply payload that follows the header
  */
  if( iLength<0 ){
................................................................................
        if( z[i]==0 ) break;
      }
      z[j] = z[i];
    }
    z[j] = 0;
    fossil_fatal("server sends error: %s", z);
  }
  if( g.fHttpTrace ){
    /*printf("HTTP RECEIVE:\n%s\n=======================\n",blob_str(pReply));*/
  }else{
    blob_uncompress(pReply, pReply);
  }

  /*
  ** Close the connection to the server if appropriate.
  **
  ** FIXME:  There is some bug in the lower layers that prevents the
  ** connection from remaining open.  The easiest fix for now is to
  ** simply close and restart the connection for each round-trip.
................................................................................
  */
  closeConnection = 1; /* FIX ME */
  if( closeConnection ){
    transport_close();
  }else{
    transport_rewind();
  }
  return;

  /* 
  ** Jump to here if an error is seen.
  */
write_err:
  transport_close();
  return;  
}

    zPw = 0;
  }else{
    /* Password failure while doing a sync from the command-line interface */
    url_prompt_for_password();
    zPw = g.urlPasswd;
    if( !g.dontKeepUrl ) db_set("last-sync-pw", obscure(zPw), 0);
  }

  /* If the first character of the password is "#", then that character is
  ** not really part of the password - it is an indicator that we should
  ** use Basic Authentication.  So skip that character.
  */
  if( zPw && zPw[0]=='#' ) zPw++;

  /* The login card wants the SHA1 hash of the password, so convert the
  ** password to its SHA1 hash it it isn't already a SHA1 hash.





  */




  if( zPw && zPw[0] ) zPw = sha1_shared_secret(zPw, zLogin, 0);



  blob_append(&pw, zPw, -1);
  sha1sum_blob(&pw, &sig);
  blob_appendf(pLogin, "login %F %b %b\n", zLogin, &nonce, &sig);
  blob_reset(&pw);
  blob_reset(&sig);
  blob_reset(&nonce);
................................................................................
  if( i>0 && g.urlPath[i-1]=='/' ){
    zSep = "";
  }else{
    zSep = "/";
  }
  blob_appendf(pHdr, "POST %s%sxfer/xfer HTTP/1.0\r\n", g.urlPath, zSep);
  if( g.urlProxyAuth ){
    blob_appendf(pHdr, "Proxy-Authorization: %s\r\n", g.urlProxyAuth);
  }
  if( g.urlPasswd && g.urlUser && g.urlPasswd[0]=='#' ){
    char *zCredentials = mprintf("%s:%s", g.urlUser, &g.urlPasswd[1]);
    char *zEncoded = encode64(zCredentials, -1);
    blob_appendf(pHdr, "Authorization: Basic %s\r\n", zEncoded);
    fossil_free(zEncoded);
    fossil_free(zCredentials);
  }
  blob_appendf(pHdr, "Host: %s\r\n", g.urlHostname);
  blob_appendf(pHdr, "User-Agent: Fossil/" MANIFEST_VERSION "\r\n");
  if( g.fHttpTrace ){
    blob_appendf(pHdr, "Content-Type: application/x-fossil-debug\r\n");
  }else{
    blob_appendf(pHdr, "Content-Type: application/x-fossil\r\n");
................................................................................
** in pRecv.  pRecv is assumed to be uninitialized when
** this routine is called - this routine will initialize it.
**
** The server address is contain in the "g" global structure.  The
** url_parse() routine should have been called prior to this routine
** in order to fill this structure appropriately.
*/
int http_exchange(Blob *pSend, Blob *pReply, int useLogin){
  Blob login;           /* The login card */
  Blob payload;         /* The complete payload including login card */
  Blob hdr;             /* The HTTP request header */
  int closeConnection;  /* True to close the connection when done */
  int iLength;          /* Length of the reply payload */
  int rc;               /* Result code */
  int iHttpVersion;     /* Which version of HTTP protocol server uses */
  char *zLine;          /* A single line of the reply header */
  int i;                /* Loop counter */
  int isError = 0;      /* True if the reply is an error message */
  int isCompressed = 1; /* True if the reply is compressed */

  if( transport_open() ){
    fossil_warning(transport_errmsg());
    return 1;
  }

  /* Construct the login card and prepare the complete payload */
  blob_zero(&login);
  if( useLogin ) http_build_login_card(pSend, &login);
  if( g.fHttpTrace ){
    payload = login;
................................................................................
  /* Construct the HTTP request header */
  http_build_header(&payload, &hdr);

  /* When tracing, write the transmitted HTTP message both to standard
  ** output and into a file.  The file can then be used to drive the
  ** server-side like this:
  **
  **      ./fossil test-http <http-request-1.txt
  */
  if( g.fHttpTrace ){
    static int traceCnt = 0;
    char *zOutFile;
    FILE *out;
    traceCnt++;
    zOutFile = mprintf("http-request-%d.txt", traceCnt);


    out = fopen(zOutFile, "w");
    if( out ){
      fwrite(blob_buffer(&hdr), 1, blob_size(&hdr), out);
      fwrite(blob_buffer(&payload), 1, blob_size(&payload), out);
      fclose(out);
    }
    free(zOutFile);
    zOutFile = mprintf("http-reply-%d.txt", traceCnt);
    out = fopen(zOutFile, "w");
    transport_log(out);
    free(zOutFile);
  }

  /*
  ** Send the request to the server.
  */
  transport_send(&hdr);
  transport_send(&payload);
................................................................................
  /*
  ** Read and interpret the server reply
  */
  closeConnection = 1;
  iLength = -1;
  while( (zLine = transport_receive_line())!=0 && zLine[0]!=0 ){
    /* printf("[%s]\n", zLine); fflush(stdout); */
    if( fossil_strnicmp(zLine, "http/1.", 7)==0 ){
      if( sscanf(zLine, "HTTP/1.%d %d", &iHttpVersion, &rc)!=2 ) goto write_err;
      if( rc!=200 && rc!=302 ){
        int ii;
        for(ii=7; zLine[ii] && zLine[ii]!=' '; ii++){}
        while( zLine[ii]==' ' ) ii++;
        fossil_warning("server says: %s", &zLine[ii]);
        goto write_err;
      }
      if( iHttpVersion==0 ){
        closeConnection = 1;
      }else{
        closeConnection = 0;
      }
    }else if( fossil_strnicmp(zLine, "content-length:", 15)==0 ){
      for(i=15; fossil_isspace(zLine[i]); i++){}
      iLength = atoi(&zLine[i]);
    }else if( fossil_strnicmp(zLine, "connection:", 11)==0 ){
      char c;
      for(i=11; fossil_isspace(zLine[i]); i++){}
      c = zLine[i];
      if( c=='c' || c=='C' ){
        closeConnection = 1;
      }else if( c=='k' || c=='K' ){
        closeConnection = 0;
      }
    }else if( rc==302 && fossil_strnicmp(zLine, "location:", 9)==0 ){
      int i, j;
      for(i=9; zLine[i] && zLine[i]==' '; i++){}
      if( zLine[i]==0 ) fossil_fatal("malformed redirect: %s", zLine);
      j = strlen(zLine) - 1; 
      while( j>4 && strcmp(&zLine[j-4],"/xfer")==0 ){
         j -= 4;
         zLine[j] = 0;
      }
      fossil_print("redirect to %s\n", &zLine[i]);
      url_parse(&zLine[i]);
      transport_close();
      return http_exchange(pSend, pReply, useLogin);

    }else if( fossil_strnicmp(zLine, "content-type: ", 14)==0 ){
      if( fossil_strnicmp(&zLine[14], "application/x-fossil-debug", -1)==0 ){
        isCompressed = 0;
      }else if( fossil_strnicmp(&zLine[14], 
                          "application/x-fossil-uncompressed", -1)==0 ){
        isCompressed = 0;
      }else if( fossil_strnicmp(&zLine[14], "application/x-fossil", -1)!=0 ){
        isError = 1;
      }
    }
  }
  if( rc!=200 ){
    fossil_warning("\"location:\" missing from 302 redirect reply");
    goto write_err;
  }

  /*
  ** Extract the reply payload that follows the header
  */
  if( iLength<0 ){
................................................................................
        if( z[i]==0 ) break;
      }
      z[j] = z[i];
    }
    z[j] = 0;
    fossil_fatal("server sends error: %s", z);
  }



  if( isCompressed ) blob_uncompress(pReply, pReply);


  /*
  ** Close the connection to the server if appropriate.
  **
  ** FIXME:  There is some bug in the lower layers that prevents the
  ** connection from remaining open.  The easiest fix for now is to
  ** simply close and restart the connection for each round-trip.
................................................................................
  */
  closeConnection = 1; /* FIX ME */
  if( closeConnection ){
    transport_close();
  }else{
    transport_rewind();
  }
  return 0;

  /* 
  ** Jump to here if an error is seen.
  */
write_err:
  transport_close();
  return 1;  
}

      struct hostent *pHost;
      pHost = gethostbyname(g.urlName);
      if( pHost!=0 ){
        memcpy(&addr.sin_addr,pHost->h_addr_list[0],pHost->h_length);
      }else
#endif
      {
        socket_set_errmsg("can't resolve host name: %s\n", g.urlName);
        return 1;
      }
    }
    addrIsInit = 1;

    /* Set the Global.zIpAddr variable to the server we are talking to.
    ** This is used to populate the ipaddr column of the rcvfrom table,

      struct hostent *pHost;
      pHost = gethostbyname(g.urlName);
      if( pHost!=0 ){
        memcpy(&addr.sin_addr,pHost->h_addr_list[0],pHost->h_length);
      }else
#endif
      {
        socket_set_errmsg("can't resolve host name: %s", g.urlName);
        return 1;
      }
    }
    addrIsInit = 1;

    /* Set the Global.zIpAddr variable to the server we are talking to.
    ** This is used to populate the ipaddr column of the rcvfrom table,

*/
static struct {
  int isOpen;             /* True when the transport layer is open */
  char *pBuf;             /* Buffer used to hold the reply */
  int nAlloc;             /* Space allocated for transportBuf[] */
  int nUsed ;             /* Space of transportBuf[] used */
  int iCursor;            /* Next unread by in transportBuf[] */
  int nSent;              /* Number of bytes sent */
  int nRcvd;              /* Number of bytes received */
  FILE *pFile;            /* File I/O for FILE: */
  char *zOutFile;         /* Name of outbound file for FILE: */
  char *zInFile;          /* Name of inbound file for FILE: */

} transport = {
  0, 0, 0, 0, 0, 0, 0
};

/*
** Information about the connection to the SSH subprocess when
** using the ssh:// sync method.
................................................................................
  return socket_errmsg();
}

/*
** Retrieve send/receive counts from the transport layer.  If "resetFlag"
** is true, then reset the counts.
*/
void transport_stats(int *pnSent, int *pnRcvd, int resetFlag){
  if( pnSent ) *pnSent = transport.nSent;
  if( pnRcvd ) *pnRcvd = transport.nRcvd;
  if( resetFlag ){
    transport.nSent = 0;
    transport.nRcvd = 0;
  }
}
................................................................................
  if( g.urlIsSsh ){
    /* Only SSH requires a global initialization.  For SSH we need to create
    ** and run an SSH command to talk to the remote machine.
    */
    const char *zSsh;  /* The base SSH command */
    Blob zCmd;         /* The SSH command */
    char *zHost;       /* The host name to contact */
    char zIn[200];     /* An input line received back from remote */

    zSsh = db_get("ssh-command", zDefaultSshCmd);
    blob_init(&zCmd, zSsh, -1);
    if( g.urlPort!=g.urlDfltPort ){
#ifdef __MINGW32__
      blob_appendf(&zCmd, " -P %d", g.urlPort);
#else
      blob_appendf(&zCmd, " -p %d", g.urlPort);
#endif
    }

    if( g.urlUser && g.urlUser[0] ){
      zHost = mprintf("%s@%s", g.urlUser, g.urlName);
#ifdef __MINGW32__
      /* Only win32 (and specifically PLINK.EXE support the -pw option */
      if( g.urlPasswd && g.urlPasswd[0] ){
        Blob pw;
        blob_zero(&pw);
        if( g.urlPasswd[0]=='*' ){
          char *zPrompt;
          zPrompt = mprintf("Password for [%s]: ", zHost);
          prompt_for_password(zPrompt, &pw, 0);
................................................................................
          free(zPrompt);
        }else{
          blob_init(&pw, g.urlPasswd, -1);
        }
        blob_append(&zCmd, " -pw ", -1);
        shell_escape(&zCmd, blob_str(&pw));
        blob_reset(&pw);

      }
#endif
    }else{
      zHost = mprintf("%s", g.urlName);
    }
    blob_append(&zCmd, " ", 1);
    shell_escape(&zCmd, zHost);

    free(zHost);
    /* printf("%s\n", blob_str(&zCmd)); */
    popen2(blob_str(&zCmd), &sshIn, &sshOut, &sshPid);
    if( sshPid==0 ){
      fossil_fatal("cannot start ssh tunnel using [%b]", &zCmd);
    }
    blob_reset(&zCmd);

    /* Send an "echo" command to the other side to make sure that the
    ** connection is up and working.
    */
    fprintf(sshOut, "echo test\n");
    fflush(sshOut);

    sshin_read(zIn, sizeof(zIn));
    if( memcmp(zIn, "test", 4)!=0 ){
      pclose2(sshIn, sshOut, sshPid);
      fossil_fatal("ssh connection failed: [%s]", zIn);
    }

  }
}

/*
** Open a connection to the server.  The server is defined by the following
** global variables:
**
................................................................................
  if( transport.isOpen==0 ){
    if( g.urlIsSsh ){
      Blob cmd;
      blob_zero(&cmd);
      shell_escape(&cmd, g.urlFossil);
      blob_append(&cmd, " test-http ", -1);
      shell_escape(&cmd, g.urlPath);
      /* fprintf(stdout, "%s\n", blob_str(&cmd)); */
      fprintf(sshOut, "%s\n", blob_str(&cmd));
      fflush(sshOut);
      blob_reset(&cmd);
    }else if( g.urlIsHttps ){
      #ifdef FOSSIL_ENABLE_SSL
      rc = ssl_open();
      if( rc==0 ) transport.isOpen = 1;
................................................................................
void transport_close(void){
  if( transport.isOpen ){
    free(transport.pBuf);
    transport.pBuf = 0;
    transport.nAlloc = 0;
    transport.nUsed = 0;
    transport.iCursor = 0;




    if( g.urlIsSsh ){
      /* No-op */
    }else if( g.urlIsHttps ){
      #ifdef FOSSIL_ENABLE_SSL
      ssl_close();
      #endif
    }else if( g.urlIsFile ){
................................................................................
*/
void transport_flip(void){
  if( g.urlIsSsh ){
    fprintf(sshOut, "\n\n");
  }else if( g.urlIsFile ){
    char *zCmd;
    fclose(transport.pFile);
    zCmd = mprintf("\"%s\" http \"%s\" \"%s\" \"%s\" 127.0.0.1",
       g.argv[0], g.urlName, transport.zOutFile, transport.zInFile
    );
    fossil_system(zCmd);
    free(zCmd);
    transport.pFile = fopen(transport.zInFile, "rb");
  }
}













/*
** This routine is called when the inbound message has been received
** and it is time to start sending again.
*/
void transport_rewind(void){
  if( g.urlIsFile ){
................................................................................
*/
static int transport_fetch(char *zBuf, int N){
  int got;
  if( sshIn ){
    int x;
    int wanted = N;
    got = 0;

    while( wanted>0 ){
      x = read(sshIn, &zBuf[got], wanted);
      if( x<=0 ) break;
      got += x;
      wanted -= x;
    }
  }else if( g.urlIsHttps ){
................................................................................
    got = 0;
    #endif
  }else if( g.urlIsFile ){
    got = fread(zBuf, 1, N, transport.pFile);
  }else{
    got = socket_receive(0, zBuf, N);
  }
  /* printf("received %d of %d bytes\n", got, N); fflush(stdout);  */




  return got;
}

/*
** Read N bytes of content from the wire and store in the supplied buffer.
** Return the number of bytes actually received.
*/
int transport_receive(char *zBuf, int N){
  int onHand;       /* Bytes current held in the transport buffer */
  int nByte = 0;    /* Bytes of content received */

  onHand = transport.nUsed - transport.iCursor;
  /* printf("request %d with %d on hand\n", N, onHand); fflush(stdout);  */
  if( onHand>0 ){
    int toMove = onHand;
    if( toMove>N ) toMove = N;
    /* printf("bytes on hand: %d of %d\n", toMove, N); fflush(stdout); */
    memcpy(zBuf, &transport.pBuf[transport.iCursor], toMove);
    transport.iCursor += toMove;
    if( transport.iCursor>=transport.nUsed ){
................................................................................
    transport.nAlloc = transport.nUsed + N;
    pNew = fossil_realloc(transport.pBuf, transport.nAlloc);
    transport.pBuf = pNew;
  }
  if( N>0 ){
    i = transport_fetch(&transport.pBuf[transport.nUsed], N);
    if( i>0 ){

      transport.nUsed += i;
    }
  }
}

/*
** Fetch a single line of input where a line is all text up to the next
................................................................................
char *transport_receive_line(void){
  int i;
  int iStart;

  i = iStart = transport.iCursor;
  while(1){
    if( i >= transport.nUsed ){
      transport_load_buffer(1000);
      i -= iStart;
      iStart = 0;
      if( i >= transport.nUsed ){
        transport.pBuf[i] = 0;
        transport.iCursor = i;
        break;
      }
................................................................................
        transport.pBuf[i] = 0;
        i--;
      }
      break;
    }
    i++;
  }
  /* printf("Got line: [%s]\n", &transport.pBuf[iStart]); */
  return &transport.pBuf[iStart];
}

void transport_global_shutdown(void){
  if( g.urlIsSsh && sshPid ){
    printf("Closing SSH tunnel: ");
    fflush(stdout);

*/
static struct {
  int isOpen;             /* True when the transport layer is open */
  char *pBuf;             /* Buffer used to hold the reply */
  int nAlloc;             /* Space allocated for transportBuf[] */
  int nUsed ;             /* Space of transportBuf[] used */
  int iCursor;            /* Next unread by in transportBuf[] */
  i64 nSent;              /* Number of bytes sent */
  i64 nRcvd;              /* Number of bytes received */
  FILE *pFile;            /* File I/O for FILE: */
  char *zOutFile;         /* Name of outbound file for FILE: */
  char *zInFile;          /* Name of inbound file for FILE: */
  FILE *pLog;             /* Log output here */
} transport = {
  0, 0, 0, 0, 0, 0, 0
};

/*
** Information about the connection to the SSH subprocess when
** using the ssh:// sync method.
................................................................................
  return socket_errmsg();
}

/*
** Retrieve send/receive counts from the transport layer.  If "resetFlag"
** is true, then reset the counts.
*/
void transport_stats(i64 *pnSent, i64 *pnRcvd, int resetFlag){
  if( pnSent ) *pnSent = transport.nSent;
  if( pnRcvd ) *pnRcvd = transport.nRcvd;
  if( resetFlag ){
    transport.nSent = 0;
    transport.nRcvd = 0;
  }
}
................................................................................
  if( g.urlIsSsh ){
    /* Only SSH requires a global initialization.  For SSH we need to create
    ** and run an SSH command to talk to the remote machine.
    */
    const char *zSsh;  /* The base SSH command */
    Blob zCmd;         /* The SSH command */
    char *zHost;       /* The host name to contact */
    char *zIn;         /* An input line received back from remote */

    zSsh = db_get("ssh-command", zDefaultSshCmd);
    blob_init(&zCmd, zSsh, -1);
    if( g.urlPort!=g.urlDfltPort ){
#ifdef __MINGW32__
      blob_appendf(&zCmd, " -P %d", g.urlPort);
#else
      blob_appendf(&zCmd, " -p %d", g.urlPort);
#endif
    }
    printf("%s", blob_str(&zCmd));  /* Show the base of the SSH command */
    if( g.urlUser && g.urlUser[0] ){
      zHost = mprintf("%s@%s", g.urlUser, g.urlName);
#ifdef __MINGW32__
      /* Only win32 (and specifically PLINK.EXE) support the -pw option */
      if( g.urlPasswd && g.urlPasswd[0] ){
        Blob pw;
        blob_zero(&pw);
        if( g.urlPasswd[0]=='*' ){
          char *zPrompt;
          zPrompt = mprintf("Password for [%s]: ", zHost);
          prompt_for_password(zPrompt, &pw, 0);
................................................................................
          free(zPrompt);
        }else{
          blob_init(&pw, g.urlPasswd, -1);
        }
        blob_append(&zCmd, " -pw ", -1);
        shell_escape(&zCmd, blob_str(&pw));
        blob_reset(&pw);
        printf(" -pw ********");  /* Do not show the password text */
      }
#endif
    }else{
      zHost = mprintf("%s", g.urlName);
    }
    blob_append(&zCmd, " ", 1);
    shell_escape(&zCmd, zHost);
    printf(" %s\n", zHost);  /* Show the conclusion of the SSH command */
    free(zHost);

    popen2(blob_str(&zCmd), &sshIn, &sshOut, &sshPid);
    if( sshPid==0 ){
      fossil_fatal("cannot start ssh tunnel using [%b]", &zCmd);
    }
    blob_reset(&zCmd);

    /* Send an "echo" command to the other side to make sure that the
    ** connection is up and working.
    */
    fprintf(sshOut, "echo test\n");
    fflush(sshOut);
    zIn = fossil_malloc(16000);
    sshin_read(zIn, 16000);
    if( memcmp(zIn, "test", 4)!=0 ){
      pclose2(sshIn, sshOut, sshPid);
      fossil_fatal("ssh connection failed: [%s]", zIn);
    }
    fossil_free(zIn);
  }
}

/*
** Open a connection to the server.  The server is defined by the following
** global variables:
**
................................................................................
  if( transport.isOpen==0 ){
    if( g.urlIsSsh ){
      Blob cmd;
      blob_zero(&cmd);
      shell_escape(&cmd, g.urlFossil);
      blob_append(&cmd, " test-http ", -1);
      shell_escape(&cmd, g.urlPath);
      /* printf("%s\n", blob_str(&cmd)); fflush(stdout); */
      fprintf(sshOut, "%s\n", blob_str(&cmd));
      fflush(sshOut);
      blob_reset(&cmd);
    }else if( g.urlIsHttps ){
      #ifdef FOSSIL_ENABLE_SSL
      rc = ssl_open();
      if( rc==0 ) transport.isOpen = 1;
................................................................................
void transport_close(void){
  if( transport.isOpen ){
    free(transport.pBuf);
    transport.pBuf = 0;
    transport.nAlloc = 0;
    transport.nUsed = 0;
    transport.iCursor = 0;
    if( transport.pLog ){
      fclose(transport.pLog);
      transport.pLog = 0;
    }
    if( g.urlIsSsh ){
      /* No-op */
    }else if( g.urlIsHttps ){
      #ifdef FOSSIL_ENABLE_SSL
      ssl_close();
      #endif
    }else if( g.urlIsFile ){
................................................................................
*/
void transport_flip(void){
  if( g.urlIsSsh ){
    fprintf(sshOut, "\n\n");
  }else if( g.urlIsFile ){
    char *zCmd;
    fclose(transport.pFile);
    zCmd = mprintf("\"%s\" http \"%s\" \"%s\" \"%s\" 127.0.0.1 --localauth",
       fossil_nameofexe(), g.urlName, transport.zOutFile, transport.zInFile
    );
    fossil_system(zCmd);
    free(zCmd);
    transport.pFile = fopen(transport.zInFile, "rb");
  }
}

/*
** Log all input to a file.  The transport layer will take responsibility
** for closing the log file when it is done.
*/
void transport_log(FILE *pLog){
  if( transport.pLog ){
    fclose(transport.pLog);
    transport.pLog = 0;
  }
  transport.pLog = pLog;
}

/*
** This routine is called when the inbound message has been received
** and it is time to start sending again.
*/
void transport_rewind(void){
  if( g.urlIsFile ){
................................................................................
*/
static int transport_fetch(char *zBuf, int N){
  int got;
  if( sshIn ){
    int x;
    int wanted = N;
    got = 0;
    /* printf("want %d bytes...\n", wanted); fflush(stdout); */
    while( wanted>0 ){
      x = read(sshIn, &zBuf[got], wanted);
      if( x<=0 ) break;
      got += x;
      wanted -= x;
    }
  }else if( g.urlIsHttps ){
................................................................................
    got = 0;
    #endif
  }else if( g.urlIsFile ){
    got = fread(zBuf, 1, N, transport.pFile);
  }else{
    got = socket_receive(0, zBuf, N);
  }
  /* printf("received %d of %d bytes\n", got, N); fflush(stdout); */
  if( transport.pLog ){
    fwrite(zBuf, 1, got, transport.pLog);
    fflush(transport.pLog);
  }
  return got;
}

/*
** Read N bytes of content from the wire and store in the supplied buffer.
** Return the number of bytes actually received.
*/
int transport_receive(char *zBuf, int N){
  int onHand;       /* Bytes current held in the transport buffer */
  int nByte = 0;    /* Bytes of content received */

  onHand = transport.nUsed - transport.iCursor;
  /* printf("request %d with %d on hand\n", N, onHand); fflush(stdout); */
  if( onHand>0 ){
    int toMove = onHand;
    if( toMove>N ) toMove = N;
    /* printf("bytes on hand: %d of %d\n", toMove, N); fflush(stdout); */
    memcpy(zBuf, &transport.pBuf[transport.iCursor], toMove);
    transport.iCursor += toMove;
    if( transport.iCursor>=transport.nUsed ){
................................................................................
    transport.nAlloc = transport.nUsed + N;
    pNew = fossil_realloc(transport.pBuf, transport.nAlloc);
    transport.pBuf = pNew;
  }
  if( N>0 ){
    i = transport_fetch(&transport.pBuf[transport.nUsed], N);
    if( i>0 ){
      transport.nRcvd += i;
      transport.nUsed += i;
    }
  }
}

/*
** Fetch a single line of input where a line is all text up to the next
................................................................................
char *transport_receive_line(void){
  int i;
  int iStart;

  i = iStart = transport.iCursor;
  while(1){
    if( i >= transport.nUsed ){
      transport_load_buffer(g.urlIsSsh ? 2 : 1000);
      i -= iStart;
      iStart = 0;
      if( i >= transport.nUsed ){
        transport.pBuf[i] = 0;
        transport.iCursor = i;
        break;
      }
................................................................................
        transport.pBuf[i] = 0;
        i--;
      }
      break;
    }
    i++;
  }
   /* printf("Got line: [%s]\n", &transport.pBuf[iStart]); */
  return &transport.pBuf[iStart];
}

void transport_global_shutdown(void){
  if( g.urlIsSsh && sshPid ){
    printf("Closing SSH tunnel: ");
    fflush(stdout);

** repository in the git-fast-import format as a new Fossil
** repository.
*/
#include "config.h"
#include "import.h"
#include <assert.h>















/*




















































































































































































































































































































































































































































































































































































































































** COMMAND: import
**
** Usage: %fossil import NEW-REPOSITORY
**
** Read text generated by the git-fast-export command and use it to
** construct a new Fossil repository named by the NEW-REPOSITORY
** argument.  The get-fast-export text is read from standard input.







*/
void git_import_cmd(void){
  fossil_fatal("not yet implemented....");





}

** repository in the git-fast-import format as a new Fossil
** repository.
*/
#include "config.h"
#include "import.h"
#include <assert.h>

#if INTERFACE
/*
** A single file change record.
*/
struct ImportFile { 
  char *zName;           /* Name of a file */
  char *zUuid;           /* UUID of the file */
  char *zPrior;          /* Prior name if the name was changed */
  char isFrom;           /* True if obtained from the parent */
  char isExe;            /* True if executable */
};
#endif


/*
** State information about an on-going fast-import parse.
*/
static struct {
  void (*xFinish)(void);      /* Function to finish a prior record */
  int nData;                  /* Bytes of data */
  char *zTag;                 /* Name of a tag */
  char *zBranch;              /* Name of a branch for a commit */
  char *zPrevBranch;          /* The branch of the previous check-in */
  char *aData;                /* Data content */
  char *zMark;                /* The current mark */
  char *zDate;                /* Date/time stamp */
  char *zUser;                /* User name */
  char *zComment;             /* Comment of a commit */
  char *zFrom;                /* from value as a UUID */
  char *zPrevCheckin;         /* Name of the previous check-in */
  char *zFromMark;            /* The mark of the "from" field */
  int nMerge;                 /* Number of merge values */
  int nMergeAlloc;            /* Number of slots in azMerge[] */
  char **azMerge;             /* Merge values */
  int nFile;                  /* Number of aFile values */
  int nFileAlloc;             /* Number of slots in aFile[] */
  ImportFile *aFile;          /* Information about files in a commit */
  int fromLoaded;             /* True zFrom content loaded into aFile[] */
  int tagCommit;              /* True if the commit adds a tag */
} gg;

/*
** Duplicate a string.
*/
char *fossil_strdup(const char *zOrig){
  char *z = 0;
  if( zOrig ){
    int n = strlen(zOrig);
    z = fossil_malloc( n+1 );
    memcpy(z, zOrig, n+1);
  }
  return z;
}

/*
** A no-op "xFinish" method
*/
static void finish_noop(void){}
   
/*
** Deallocate the state information.
**
** The azMerge[] and aFile[] arrays are zeroed by allocated space is
** retained unless the freeAll flag is set.
*/
static void import_reset(int freeAll){
  int i;
  gg.xFinish = 0;
  fossil_free(gg.zTag); gg.zTag = 0;
  fossil_free(gg.zBranch); gg.zBranch = 0;
  fossil_free(gg.aData); gg.aData = 0;
  fossil_free(gg.zMark); gg.zMark = 0;
  fossil_free(gg.zDate); gg.zDate = 0;
  fossil_free(gg.zUser); gg.zUser = 0;
  fossil_free(gg.zComment); gg.zComment = 0;
  fossil_free(gg.zFrom); gg.zFrom = 0;
  fossil_free(gg.zFromMark); gg.zFromMark = 0;
  for(i=0; i<gg.nMerge; i++){
    fossil_free(gg.azMerge[i]); gg.azMerge[i] = 0;
  }
  gg.nMerge = 0;
  for(i=0; i<gg.nFile; i++){
    fossil_free(gg.aFile[i].zName);
    fossil_free(gg.aFile[i].zUuid);
    fossil_free(gg.aFile[i].zPrior);
  }
  memset(gg.aFile, 0, gg.nFile*sizeof(gg.aFile[0]));
  gg.nFile = 0;
  if( freeAll ){
    fossil_free(gg.zPrevBranch);
    fossil_free(gg.zPrevCheckin);
    fossil_free(gg.azMerge);
    fossil_free(gg.aFile);
    memset(&gg, 0, sizeof(gg));
  }
  gg.xFinish = finish_noop;
}

/*
** Insert an artifact into the BLOB table if it isn't there already.
** If zMark is not zero, create a cross-reference from that mark back
** to the newly inserted artifact.
**
** If saveUuid is true, then pContent is a commit record.  Record its
** UUID in gg.zPrevCheckin.
*/
static int fast_insert_content(Blob *pContent, const char *zMark, int saveUuid){
  Blob hash;
  Blob cmpr;
  int rid;

  sha1sum_blob(pContent, &hash);
  rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%B", &hash);
  if( rid==0 ){
    static Stmt ins;
    db_static_prepare(&ins,
        "INSERT INTO blob(uuid, size, content) VALUES(:uuid, :size, :content)"
    );
    db_bind_text(&ins, ":uuid", blob_str(&hash));
    db_bind_int(&ins, ":size", gg.nData);
    blob_compress(pContent, &cmpr);
    db_bind_blob(&ins, ":content", &cmpr);
    db_step(&ins);
    db_reset(&ins);
    blob_reset(&cmpr);
    rid = db_last_insert_rowid();
  }
  if( zMark ){
    db_multi_exec(
        "INSERT OR IGNORE INTO xmark(tname, trid, tuuid)"
        "VALUES(%Q,%d,%B)", 
        zMark, rid, &hash
    );
    db_multi_exec(
        "INSERT OR IGNORE INTO xmark(tname, trid, tuuid)"
        "VALUES(%B,%d,%B)", 
        &hash, rid, &hash
    );
  }
  if( saveUuid ){
    fossil_free(gg.zPrevCheckin);
    gg.zPrevCheckin = fossil_strdup(blob_str(&hash));
  }
  blob_reset(&hash);
  return rid;
}

/*
** Use data accumulated in gg from a "blob" record to add a new file
** to the BLOB table.
*/
static void finish_blob(void){
  Blob content;
  blob_init(&content, gg.aData, gg.nData);
  fast_insert_content(&content, gg.zMark, 0);
  blob_reset(&content);
  import_reset(0);
}

/*
** Use data accumulated in gg from a "tag" record to add a new 
** control artifact to the BLOB table.
*/
static void finish_tag(void){
  Blob record, cksum;
  if( gg.zDate && gg.zTag && gg.zFrom && gg.zUser ){
    blob_zero(&record);
    blob_appendf(&record, "D %s\n", gg.zDate);
    blob_appendf(&record, "T +%F %s\n", gg.zTag, gg.zFrom);
    blob_appendf(&record, "U %F\n", gg.zUser);
    md5sum_blob(&record, &cksum);
    blob_appendf(&record, "Z %b\n", &cksum);
    fast_insert_content(&record, 0, 0);
    blob_reset(&record);
    blob_reset(&cksum);
  }
  import_reset(0);
}

/*
** Compare two ImportFile objects for sorting
*/
static int mfile_cmp(const void *pLeft, const void *pRight){
  const ImportFile *pA = (const ImportFile*)pLeft;
  const ImportFile *pB = (const ImportFile*)pRight;
  return strcmp(pA->zName, pB->zName);
}

/* Forward reference */
static void import_prior_files(void);

/*
** Use data accumulated in gg from a "commit" record to add a new 
** manifest artifact to the BLOB table.
*/
static void finish_commit(void){
  int i;
  char *zFromBranch;
  Blob record, cksum;
  import_prior_files();
  qsort(gg.aFile, gg.nFile, sizeof(gg.aFile[0]), mfile_cmp);
  blob_zero(&record);
  blob_appendf(&record, "C %F\n", gg.zComment);
  blob_appendf(&record, "D %s\n", gg.zDate);
  for(i=0; i<gg.nFile; i++){
    const char *zUuid = gg.aFile[i].zUuid;
    if( zUuid==0 ) continue;
    blob_appendf(&record, "F %F %s", gg.aFile[i].zName, zUuid);
    if( gg.aFile[i].isExe ){
      blob_append(&record, " x\n", 3);
    }else{
      blob_append(&record, "\n", 1);
    }
  }
  if( gg.zFrom ){
    blob_appendf(&record, "P %s", gg.zFrom);
    for(i=0; i<gg.nMerge; i++){
      blob_appendf(&record, " %s", gg.azMerge[i]);
    }
    blob_append(&record, "\n", 1);
    zFromBranch = db_text(0, "SELECT brnm FROM xbranch WHERE tname=%Q",
                              gg.zFromMark);
  }else{
    zFromBranch = 0;
  }
  if( !gg.tagCommit && fossil_strcmp(zFromBranch, gg.zBranch)!=0 ){
    blob_appendf(&record, "T *branch * %F\n", gg.zBranch);
    blob_appendf(&record, "T *sym-%F *\n", gg.zBranch);
    if( zFromBranch ){
      blob_appendf(&record, "T -sym-%F *\n", zFromBranch);
    }
  }
  free(zFromBranch);
  if( gg.zFrom==0 ){
    blob_appendf(&record, "T *sym-trunk *\n");
  }
  db_multi_exec("INSERT INTO xbranch(tname, brnm) VALUES(%Q,%Q)",
                gg.zMark, gg.zBranch);
  blob_appendf(&record, "U %F\n", gg.zUser);
  md5sum_blob(&record, &cksum);
  blob_appendf(&record, "Z %b\n", &cksum);
  fast_insert_content(&record, gg.zMark, 1);
  blob_reset(&record);
  blob_reset(&cksum);

  /* The "git fast-export" command might output multiple "commit" lines
  ** that reference a tag using "refs/tags/TAGNAME".  The tag should only
  ** be applied to the last commit that is output.  The problem is we do not
  ** know at this time if the current commit is the last one to hold this
  ** tag or not.  So make an entry in the XTAG table to record this tag
  ** but overwrite that entry if a later instance of the same tag appears.
  **
  ** This behavior seems like a bug in git-fast-export, but it is easier
  ** to work around the problem than to fix git-fast-export.
  */
  if( gg.tagCommit && gg.zDate && gg.zUser && gg.zFrom ){
    blob_appendf(&record, "D %s\n", gg.zDate);
    blob_appendf(&record, "T +sym-%F %s\n", gg.zBranch, gg.zPrevCheckin);
    blob_appendf(&record, "U %F\n", gg.zUser);
    md5sum_blob(&record, &cksum);
    blob_appendf(&record, "Z %b\n", &cksum);
    db_multi_exec(
       "INSERT OR REPLACE INTO xtag(tname, tcontent)"
       " VALUES(%Q,%Q)", gg.zBranch, blob_str(&record)
    );
    blob_reset(&record);
    blob_reset(&cksum);
  }

  fossil_free(gg.zPrevBranch);
  gg.zPrevBranch = gg.zBranch;
  gg.zBranch = 0;
  import_reset(0);
}

/*
** Turn the first \n in the input string into a \000
*/
static void trim_newline(char *z){
  while( z[0] && z[0]!='\n' ){ z++; }
  z[0] = 0;
}

/*
** Get a token from a line of text.  Return a pointer to the first
** character of the token and zero-terminate the token.  Make
** *pzIn point to the first character past the end of the zero
** terminator, or at the zero-terminator at EOL.
*/
static char *next_token(char **pzIn){
  char *z = *pzIn;
  int i;
  if( z[0]==0 ) return z;
  for(i=0; z[i] && z[i]!=' ' && z[i]!='\n'; i++){}
  if( z[i] ){
    z[i] = 0;
    *pzIn = &z[i+1];
  }else{
    *pzIn = &z[i];
  }
  return z;
}

/*
** Return a token that is all text up to (but omitting) the next \n
** or \r\n.
*/
static char *rest_of_line(char **pzIn){
  char *z = *pzIn;
  int i;
  if( z[0]==0 ) return z;
  for(i=0; z[i] && z[i]!='\r' && z[i]!='\n'; i++){}
  if( z[i] ){
    if( z[i]=='\r' && z[i+1]=='\n' ){
      z[i] = 0;
      i++;
    }else{
      z[i] = 0;
    }
    *pzIn = &z[i+1];
  }else{
    *pzIn = &z[i];
  }
  return z;
}

/*
** Convert a "mark" or "committish" into the UUID.
*/
static char *resolve_committish(const char *zCommittish){
  char *zRes;

  zRes = db_text(0, "SELECT tuuid FROM xmark WHERE tname=%Q", zCommittish);
  return zRes;
}

/*
** Create a new entry in the gg.aFile[] array
*/
static ImportFile *import_add_file(void){
  ImportFile *pFile;
  if( gg.nFile>=gg.nFileAlloc ){
    gg.nFileAlloc = gg.nFileAlloc*2 + 100;
    gg.aFile = fossil_realloc(gg.aFile, gg.nFileAlloc*sizeof(gg.aFile[0]));
  }
  pFile = &gg.aFile[gg.nFile++];
  memset(pFile, 0, sizeof(*pFile));
  return pFile;
}


/*
** Load all file information out of the gg.zFrom check-in
*/
static void import_prior_files(void){
  Manifest *p;
  int rid;
  ManifestFile *pOld;
  ImportFile *pNew;
  if( gg.fromLoaded ) return;
  gg.fromLoaded = 1;
  if( gg.zFrom==0 && gg.zPrevCheckin!=0 
   && fossil_strcmp(gg.zBranch, gg.zPrevBranch)==0
  ){
     gg.zFrom = gg.zPrevCheckin;
     gg.zPrevCheckin = 0;
  }
  if( gg.zFrom==0 ) return;
  rid = fast_uuid_to_rid(gg.zFrom);
  if( rid==0 ) return;
  p = manifest_get(rid, CFTYPE_MANIFEST);
  if( p==0 ) return;
  manifest_file_rewind(p);
  while( (pOld = manifest_file_next(p, 0))!=0 ){
    pNew = import_add_file();
    pNew->zName = fossil_strdup(pOld->zName);
    pNew->isExe = pOld->zPerm && strstr(pOld->zPerm, "x")!=0;
    pNew->zUuid = fossil_strdup(pOld->zUuid);
    pNew->isFrom = 1;
  }
  manifest_destroy(p);
}

/*
** Locate a file in the gg.aFile[] array by its name.  Begin the search
** with the *pI-th file.  Update *pI to be one past the file found.
** Do not search past the mx-th file.
*/
static ImportFile *import_find_file(const char *zName, int *pI, int mx){
  int i = *pI;
  int nName = strlen(zName);
  while( i<mx ){
    const char *z = gg.aFile[i].zName;
    if( memcmp(zName, z, nName)==0 && (z[nName]==0 || z[nName]=='/') ){
      *pI = i+1;
      return &gg.aFile[i];
    }
    i++;
  }
  return 0;
}


/*
** Read the git-fast-import format from pIn and insert the corresponding
** content into the database.
*/
static void git_fast_import(FILE *pIn){
  ImportFile *pFile, *pNew;
  int i, mx;
  char *z;
  char *zUuid;
  char *zName;
  char *zPerm;
  char *zFrom;
  char *zTo;
  char zLine[1000];

  gg.xFinish = finish_noop;
  while( fgets(zLine, sizeof(zLine), pIn) ){
    if( zLine[0]=='\n' || zLine[0]=='#' ) continue;
    if( memcmp(zLine, "blob", 4)==0 ){
      gg.xFinish();
      gg.xFinish = finish_blob;
    }else
    if( memcmp(zLine, "commit ", 7)==0 ){
      gg.xFinish();
      gg.xFinish = finish_commit;
      trim_newline(&zLine[7]);
      z = &zLine[7];

      /* The argument to the "commit" line might match either of these
      ** patterns:
      **
      **   (A)  refs/heads/BRANCHNAME
      **   (B)  refs/tags/TAGNAME
      **
      ** If pattern A is used, then the branchname used is as shown.
      ** Except, the "master" branch which is the default branch name in
      ** Git is changed to "trunk" which is the default name in Fossil.
      ** If the pattern is B, then the new commit should be on the same
      ** branch as its parent.  And, we might need to add the TAGNAME
      ** tag to the new commit.  However, if there are multiple instances
      ** of pattern B with the same TAGNAME, then only put the tag on the
      ** last commit that holds that tag.
      **
      ** None of the above is explained in the git-fast-export
      ** documentation.  We had to figure it out via trial and error.
      */
      for(i=strlen(z)-1; i>=0 && z[i]!='/'; i--){}
      gg.tagCommit = memcmp(&z[i-4], "tags", 4)==0;  /* True for pattern B */
      if( z[i+1]!=0 ) z += i+1;
      if( fossil_strcmp(z, "master")==0 ) z = "trunk";
      gg.zBranch = fossil_strdup(z);
      gg.fromLoaded = 0;
    }else
    if( memcmp(zLine, "tag ", 4)==0 ){
      gg.xFinish();
      gg.xFinish = finish_tag;
      trim_newline(&zLine[4]);
      gg.zTag = fossil_strdup(&zLine[4]);
    }else
    if( memcmp(zLine, "reset ", 4)==0 ){
      gg.xFinish();
    }else
    if( memcmp(zLine, "checkpoint", 10)==0 ){
      gg.xFinish();
    }else
    if( memcmp(zLine, "feature", 7)==0 ){
      gg.xFinish();
    }else
    if( memcmp(zLine, "option", 6)==0 ){
      gg.xFinish();
    }else
    if( memcmp(zLine, "progress ", 9)==0 ){
      gg.xFinish();
      trim_newline(&zLine[9]);
      printf("%s\n", &zLine[9]);
      fflush(stdout);
    }else
    if( memcmp(zLine, "data ", 5)==0 ){
      fossil_free(gg.aData); gg.aData = 0;
      gg.nData = atoi(&zLine[5]);
      if( gg.nData ){
        int got;
        gg.aData = fossil_malloc( gg.nData+1 );
        got = fread(gg.aData, 1, gg.nData, pIn);
        if( got!=gg.nData ){
          fossil_fatal("short read: got %d of %d bytes", got, gg.nData);
        }
        gg.aData[got] = 0;
        if( gg.zComment==0 && gg.xFinish==finish_commit ){
          gg.zComment = gg.aData;
          gg.aData = 0;
          gg.nData = 0;
        }
      }
    }else
    if( memcmp(zLine, "author ", 7)==0 ){
      /* No-op */
    }else
    if( memcmp(zLine, "mark ", 5)==0 ){
      trim_newline(&zLine[5]);
      fossil_free(gg.zMark);
      gg.zMark = fossil_strdup(&zLine[5]);
    }else
    if( memcmp(zLine, "tagger ", 7)==0 || memcmp(zLine, "committer ",10)==0 ){
      sqlite3_int64 secSince1970;
      for(i=0; zLine[i] && zLine[i]!='<'; i++){}
      if( zLine[i]==0 ) goto malformed_line;
      z = &zLine[i+1];
      for(i=i+1; zLine[i] && zLine[i]!='>'; i++){}
      if( zLine[i]==0 ) goto malformed_line;
      zLine[i] = 0;
      fossil_free(gg.zUser);
      gg.zUser = fossil_strdup(z);
      secSince1970 = 0;
      for(i=i+2; fossil_isdigit(zLine[i]); i++){
        secSince1970 = secSince1970*10 + zLine[i] - '0';
      }
      fossil_free(gg.zDate);
      gg.zDate = db_text(0, "SELECT datetime(%lld, 'unixepoch')", secSince1970);
      gg.zDate[10] = 'T';
    }else
    if( memcmp(zLine, "from ", 5)==0 ){
      trim_newline(&zLine[5]);
      fossil_free(gg.zFromMark);
      gg.zFromMark = fossil_strdup(&zLine[5]);
      fossil_free(gg.zFrom);
      gg.zFrom = resolve_committish(&zLine[5]);
    }else
    if( memcmp(zLine, "merge ", 6)==0 ){
      trim_newline(&zLine[6]);
      if( gg.nMerge>=gg.nMergeAlloc ){
        gg.nMergeAlloc = gg.nMergeAlloc*2 + 10;
        gg.azMerge = fossil_realloc(gg.azMerge, gg.nMergeAlloc*sizeof(char*));
      }
      gg.azMerge[gg.nMerge] = resolve_committish(&zLine[6]);
      if( gg.azMerge[gg.nMerge] ) gg.nMerge++;
    }else
    if( memcmp(zLine, "M ", 2)==0 ){
      import_prior_files();
      z = &zLine[2];
      zPerm = next_token(&z);
      zUuid = next_token(&z);
      zName = rest_of_line(&z);
      i = 0;
      pFile = import_find_file(zName, &i, gg.nFile);
      if( pFile==0 ){
        pFile = import_add_file();
        pFile->zName = fossil_strdup(zName);
      }
      pFile->isExe = (fossil_strcmp(zPerm, "100755")==0);
      fossil_free(pFile->zUuid);
      pFile->zUuid = resolve_committish(zUuid);
      pFile->isFrom = 0;
    }else
    if( memcmp(zLine, "D ", 2)==0 ){
      import_prior_files();
      z = &zLine[2];
      zName = rest_of_line(&z);
      i = 0;
      while( (pFile = import_find_file(zName, &i, gg.nFile))!=0 ){
        if( pFile->isFrom==0 ) continue;
        fossil_free(pFile->zName);
        fossil_free(pFile->zPrior);
        fossil_free(pFile->zUuid);
        *pFile = gg.aFile[--gg.nFile];
        i--;
      }
    }else
    if( memcmp(zLine, "C ", 2)==0 ){
      int nFrom;
      import_prior_files();
      z = &zLine[2];
      zFrom = next_token(&z);
      zTo = rest_of_line(&z);
      i = 0;
      mx = gg.nFile;
      nFrom = strlen(zFrom);
      while( (pFile = import_find_file(zFrom, &i, mx))!=0 ){
        if( pFile->isFrom==0 ) continue;
        pNew = import_add_file();
        pFile = &gg.aFile[i-1];
        if( strlen(pFile->zName)>nFrom ){
          pNew->zName = mprintf("%s%s", zTo, pFile->zName[nFrom]);
        }else{
          pNew->zName = fossil_strdup(pFile->zName);
        }
        pNew->isExe = pFile->isExe;
        pNew->zUuid = fossil_strdup(pFile->zUuid);
        pNew->isFrom = 0;
      }
    }else
    if( memcmp(zLine, "R ", 2)==0 ){
      int nFrom;
      import_prior_files();
      z = &zLine[2];
      zFrom = next_token(&z);
      zTo = rest_of_line(&z);
      i = 0;
      nFrom = strlen(zFrom);
      while( (pFile = import_find_file(zFrom, &i, gg.nFile))!=0 ){
        if( pFile->isFrom==0 ) continue;
        pNew = import_add_file();
        pFile = &gg.aFile[i-1];
        if( strlen(pFile->zName)>nFrom ){
          pNew->zName = mprintf("%s%s", zTo, pFile->zName[nFrom]);
        }else{
          pNew->zName = fossil_strdup(pFile->zName);
        }
        pNew->zPrior = pFile->zName;
        pNew->isExe = pFile->isExe;
        pNew->zUuid = pFile->zUuid;
        pNew->isFrom = 0;
        gg.nFile--;
        *pFile = *pNew;
        memset(pNew, 0, sizeof(*pNew));
      }
      fossil_fatal("cannot handle R records, use --full-tree");
    }else
    if( memcmp(zLine, "deleteall", 9)==0 ){
      gg.fromLoaded = 1;
    }else
    if( memcmp(zLine, "N ", 2)==0 ){
      /* No-op */
    }else

    {
      goto malformed_line;
    }
  }
  gg.xFinish();
  import_reset(1);
  return;

malformed_line:
  trim_newline(zLine);
  fossil_fatal("bad fast-import line: [%s]", zLine);
  return;
}

/*
** COMMAND: import
**
** Usage: %fossil import --git NEW-REPOSITORY
**
** Read text generated by the git-fast-export command and use it to
** construct a new Fossil repository named by the NEW-REPOSITORY
** argument.  The git-fast-export text is read from standard input.
**
** The git-fast-export file format is currently the only VCS interchange
** format that is understood, though other interchange formats may be added
** in the future.
**
** The --incremental option allows an existing repository to be extended
** with new content.
*/
void git_import_cmd(void){

  char *zPassword;
  FILE *pIn;
  Stmt q;
  int forceFlag = find_option("force", "f", 0)!=0;
  int incrFlag = find_option("incremental", "i", 0)!=0;

  find_option("git",0,0);  /* Skip the --git option for now */
  verify_all_options();
  if( g.argc!=3  && g.argc!=4 ){
    usage("REPOSITORY-NAME");
  }
  if( g.argc==4 ){
    pIn = fopen(g.argv[3], "rb");
  }else{
    pIn = stdin;
    fossil_binary_mode(pIn);
  }
  if( !incrFlag ){
    if( forceFlag ) unlink(g.argv[2]);
    db_create_repository(g.argv[2]);
  }
  db_open_repository(g.argv[2]);
  db_open_config(0);

  /* The following temp-tables are used to hold information needed for
  ** the import.
  **
  ** The XMARK table provides a mapping from fast-import "marks" and symbols
  ** into artifact ids (UUIDs - the 40-byte hex SHA1 hash of artifacts). 
  ** Given any valid fast-import symbol, the corresponding fossil rid and
  ** uuid can found by searching against the xmark.tname field.
  **
  ** The XBRANCH table maps commit marks and symbols into the branch those
  ** commits belong to.  If xbranch.tname is a fast-import symbol for a
  ** checkin then xbranch.brnm is the branch that checkin is part of.
  **
  ** The XTAG table records information about tags that need to be applied
  ** to various branches after the import finishes.  The xtag.tcontent field
  ** contains the text of an artifact that will add a tag to a check-in.
  ** The git-fast-export file format might specify the same tag multiple
  ** times but only the last tag should be used.  And we do not know which
  ** occurrence of the tag is the last until the import finishes.
  */
  db_multi_exec(
     "CREATE TEMP TABLE xmark(tname TEXT UNIQUE, trid INT, tuuid TEXT);"
     "CREATE TEMP TABLE xbranch(tname TEXT UNIQUE, brnm TEXT);"
     "CREATE TEMP TABLE xtag(tname TEXT UNIQUE, tcontent TEXT);"
  );


  db_begin_transaction();
  if( !incrFlag ) db_initial_setup(0, 0, 1);
  git_fast_import(pIn);
  db_prepare(&q, "SELECT tcontent FROM xtag");
  while( db_step(&q)==SQLITE_ROW ){
    Blob record;
    db_ephemeral_blob(&q, 0, &record);
    fast_insert_content(&record, 0, 0);
    import_reset(0);
  }
  db_finalize(&q);
  db_end_transaction(0);
  db_begin_transaction();
  printf("Rebuilding repository meta-data...\n");
  rebuild_db(0, 1, !incrFlag);
  verify_cancel();
  db_end_transaction(0);
  printf("Vacuuming..."); fflush(stdout);
  db_multi_exec("VACUUM");
  printf(" ok\n");
  if( !incrFlag ){
    printf("project-id: %s\n", db_get("project-code", 0));
    printf("server-id:  %s\n", db_get("server-code", 0));
    zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
    printf("admin-user: %s (password is \"%s\")\n", g.zLogin, zPassword);
  }
}

** Print common information about a particular record.
**
**     *  The UUID
**     *  The record ID
**     *  mtime and ctime
**     *  who signed it
*/
void show_common_info(int rid, const char *zUuidName, int showComment){





  Stmt q;
  char *zComment = 0;
  char *zTags;
  char *zDate;
  char *zUuid;
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  if( zUuid ){
................................................................................
         /* 01234567890123 */
    printf("%-13s %s %s\n", zUuidName, zUuid, zDate ? zDate : "");
    free(zUuid);
    free(zDate);
  }
  if( zUuid && showComment ){
    zComment = db_text(0, 

      "SELECT coalesce(ecomment,comment) || ' (user: ' || coalesce(euser,user,'?') || ')' FROM event WHERE objid=%d",

      rid
    );
  }

  db_prepare(&q, "SELECT uuid, pid FROM plink JOIN blob ON pid=rid "
                 " WHERE cid=%d", rid);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    zDate = db_text("", 
      "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d",
      db_column_int(&q, 1)
    );
    printf("parent:       %s %s\n", zUuid, zDate);
    free(zDate);
  }
  db_finalize(&q);
  db_prepare(&q, "SELECT uuid, cid FROM plink JOIN blob ON cid=rid "
                 " WHERE pid=%d", rid);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    zDate = db_text("", 
      "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d",
      db_column_int(&q, 1)
    );
    printf("child:        %s %s\n", zUuid, zDate);
    free(zDate);
  }
  db_finalize(&q);

  zTags = info_tags_of_checkin(rid, 0);
  if( zTags && zTags[0] ){
    printf("tags:         %s\n", zTags);
  }
  free(zTags);
  if( zComment ){
    printf("comment:      ");
................................................................................
  }
}


/*
** COMMAND: info
**
** Usage: %fossil info ?ARTIFACT-ID|FILENAME?
**
** With no arguments, provide information about the current tree.
** If an argument is specified, provide information about the object
** in the respository of the current tree that the argument refers
** to.  Or if the argument is the name of a repository, show
** information about that repository.



*/
void info_cmd(void){
  i64 fsize;
  if( g.argc!=2 && g.argc!=3 ){
    usage("?FILENAME|ARTIFACT-ID?");
  }
  if( g.argc==3 && (fsize = file_size(g.argv[2]))>0 && (fsize&0x1ff)==0 ){
................................................................................
#endif
    printf("project-code: %s\n", db_get("project-code", ""));
    printf("server-code:  %s\n", db_get("server-code", ""));
    vid = db_lget_int("checkout", 0);
    if( vid==0 ){
      printf("checkout:     nil\n");
    }else{
      show_common_info(vid, "checkout:", 1);
    }
  }else{
    int rid;
    rid = name_to_rid(g.argv[2]);
    if( rid==0 ){
      fossil_panic("no such object: %s\n", g.argv[2]);
    }
    show_common_info(rid, "uuid:", 1);
  }
}

/*
** Show information about all tags on a given node.
*/
static void showTags(int rid, const char *zNotGlob){
................................................................................
    if( tagtype==2 ){
      if( zOrigUuid && zOrigUuid[0] ){
        @ inherited from
        hyperlink_to_uuid(zOrigUuid);
      }else{
        @ propagates to descendants
      }

      if( zValue && strcmp(zTagname,"branch")==0 ){
        @   
        @ <a href="%s(g.zBaseURL)/timeline?r=%T(zValue)">branch timeline</a>
      }

    }
    if( zSrcUuid && zSrcUuid[0] ){
      if( tagtype==0 ){
        @ by
      }else{
        @ added by
      }
................................................................................
** Write a line of web-page output that shows changes that have occurred 
** to a file between two check-ins.
*/
static void append_file_change_line(
  const char *zName,    /* Name of the file that has changed */
  const char *zOld,     /* blob.uuid before change.  NULL for added files */
  const char *zNew,     /* blob.uuid after change.  NULL for deletes */
  int showDiff          /* Show edit diffs if true */

){
  if( !g.okHistory ){
    if( zNew==0 ){
      @ <p>Deleted %h(zName)</p>
    }else if( zOld==0 ){
      @ <p>Added %h(zName)</p>


    }else{
      @ <p>Changes to %h(zName)</p>
    }
    if( showDiff ){
      @ <blockquote><pre>
      append_diff(zOld, zNew);
      @ </pre></blockquote>
    }
  }else{
    if( zOld && zNew ){

      @ <p>Modified <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ from <a href="%s(g.zTop)/artifact/%s(zOld)">[%S(zOld)]</a>
      @ to <a href="%s(g.zTop)/artifact/%s(zNew)">[%S(zNew)].</a>




    }else if( zOld ){
      @ <p>Deleted <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ version <a href="%s(g.zTop)/artifact/%s(zOld)">[%S(zOld)]</a>
    }else{
      @ <p>Added <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ version <a href="%s(g.zTop)/artifact/%s(zNew)">[%S(zNew)]</a>
    }
................................................................................
** "show-version-diffs" setting is turned on.
*/
void ci_page(void){
  Stmt q;
  int rid;
  int isLeaf;
  int showDiff;
  const char *zName;



  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  zName = P("name");
  rid = name_to_rid_www("name");
  if( rid==0 ){
    style_header("Check-in Information Error");
    @ No such object: %h(g.argv[2])
    style_footer();
    return;
  }
  isLeaf = !db_exists("SELECT 1 FROM plink WHERE pid=%d", rid);






  db_prepare(&q, 
     "SELECT uuid, datetime(mtime, 'localtime'), user, comment"

     "  FROM blob, event"
     " WHERE blob.rid=%d"
     "   AND event.objid=%d",
     rid, rid
  );
  if( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    char *zTitle = mprintf("Check-in [%.10s]", zUuid);
    char *zEUser, *zEComment;
    const char *zUser;
    const char *zComment;
    const char *zDate;

    style_header(zTitle);
    login_anonymous_available();
    free(zTitle);
    zEUser = db_text(0,
                   "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d",
                    TAG_USER, rid);
    zEComment = db_text(0, 
                   "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d",
                   TAG_COMMENT, rid);
    zUser = db_column_text(&q, 2);
    zComment = db_column_text(&q, 3);
    zDate = db_column_text(&q,1);

    @ <div class="section">Overview</div>
    @ <table class="label-value">
    @ <tr><th>SHA1&nbsp;Hash:</th><td>%s(zUuid)
    if( g.okSetup ){
      @ (Record ID: %d(rid))
    }
    @ </td></tr>
    @ <tr><th>Date:</th><td>
    hyperlink_to_date(zDate, "</td></tr>");




    if( zEUser ){
      @ <tr><th>Edited&nbsp;User:</th><td>
      hyperlink_to_user(zEUser,zDate,"</td></tr>");
      @ <tr><th>Original&nbsp;User:</th><td>
      hyperlink_to_user(zUser,zDate,"</td></tr>");
    }else{
      @ <tr><th>User:</th><td>
................................................................................
        @ <td>%h(zUser) @ %h(zIpAddr) on %s(zDate)</td></tr>
      }
      db_finalize(&q);
    }
    if( g.okHistory ){
      const char *zProjName = db_get("project-name", "unnamed");
      @ <tr><th>Timelines:</th><td>


      @   <a href="%s(g.zBaseURL)/timeline?p=%S(zUuid)">ancestors</a>


      @ | <a href="%s(g.zBaseURL)/timeline?d=%S(zUuid)">descendants</a>


      @ | <a href="%s(g.zBaseURL)/timeline?d=%S(zUuid)&amp;p=%S(zUuid)">both</a>

      db_prepare(&q, "SELECT substr(tag.tagname,5) FROM tagxref, tag "
                     " WHERE rid=%d AND tagtype>0 "
                     "   AND tag.tagid=tagxref.tagid "
                     "   AND +tag.tagname GLOB 'sym-*'", rid);
      while( db_step(&q)==SQLITE_ROW ){
        const char *zTagName = db_column_text(&q, 0);
        @  | <a href="%s(g.zTop)/timeline?r=%T(zTagName)">%h(zTagName)</a>
................................................................................
      }
      db_finalize(&q);
      @ </td></tr>
      @ <tr><th>Other&nbsp;Links:</th>
      @   <td>
      @     <a href="%s(g.zTop)/dir?ci=%S(zUuid)">files</a>
      if( g.okZip ){



        @ | <a href="%s(g.zTop)/zip/%s(zProjName)-%S(zUuid).zip?uuid=%s(zUuid)">
        @         ZIP archive</a>

      }
      @   | <a href="%s(g.zTop)/artifact/%S(zUuid)">manifest</a>
      if( g.okWrite ){
        @   | <a href="%s(g.zTop)/ci_edit?r=%S(zUuid)">edit</a>
      }
      @   </td>
      @ </tr>
................................................................................
    @ </table>
  }else{
    style_header("Check-in Information");
    login_anonymous_available();
  }
  db_finalize(&q);
  showTags(rid, "");

  @ <div class="section">Changes</div>
  showDiff = g.zPath[0]!='c';
  if( db_get_boolean("show-version-diffs", 0)==0 ){
    showDiff = !showDiff;
    if( showDiff ){
      @ <a href="%s(g.zBaseURL)/vinfo/%T(zName)">[hide&nbsp;diffs]</a><br/>
    }else{
      @ <a href="%s(g.zBaseURL)/ci/%T(zName)">[show&nbsp;diffs]</a><br/>
    }
  }else{
    if( showDiff ){
      @ <a href="%s(g.zBaseURL)/ci/%T(zName)">[hide&nbsp;diffs]</a><br/>
    }else{
      @ <a href="%s(g.zBaseURL)/vinfo/%T(zName)">[show&nbsp;diffs]</a><br/>
    }
  }


  db_prepare(&q,
     "SELECT name,"
     "       (SELECT uuid FROM blob WHERE rid=mlink.pid),"
     "       (SELECT uuid FROM blob WHERE rid=mlink.fid)"
     "  FROM mlink JOIN filename ON filename.fnid=mlink.fnid"
     " WHERE mlink.mid=%d"
     " ORDER BY name",
     rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q,0);

    const char *zOld = db_column_text(&q,1);
    const char *zNew = db_column_text(&q,2);
    append_file_change_line(zName, zOld, zNew, showDiff);
  }
  db_finalize(&q);

  style_footer();
}

/*
** WEBPAGE: winfo
** URL:  /winfo?name=RID
**
................................................................................
      @ <tr><th>Record ID:</th><td>%d(rid)</td></tr>
    }
    @ <tr><th>Original&nbsp;User:</th><td>
    hyperlink_to_user(zUser, zDate, "</td></tr>");
    if( g.okHistory ){
      @ <tr><th>Commands:</th>
      @   <td>
      @     <a href="%s(g.zBaseURL)/whistory?name=%t(zName)">history</a>
      @     | <a href="%s(g.zBaseURL)/artifact/%S(zUuid)">raw-text</a>
      @   </td>
      @ </tr>
    }
    @ </table></p>
  }else{
    style_header("Wiki Information");
    rid = 0;
................................................................................
  while( pFileFrom || pFileTo ){
    int cmp;
    if( pFileFrom==0 ){
      cmp = +1;
    }else if( pFileTo==0 ){
      cmp = -1;
    }else{
      cmp = strcmp(pFileFrom->zName, pFileTo->zName);
    }
    if( cmp<0 ){
      append_file_change_line(pFileFrom->zName, 
                              pFileFrom->zUuid, 0, 0);
      pFileFrom = manifest_file_next(pFrom, 0);
    }else if( cmp>0 ){
      append_file_change_line(pFileTo->zName, 
                              0, pFileTo->zUuid, 0);

      pFileTo = manifest_file_next(pTo, 0);
    }else if( strcmp(pFileFrom->zUuid, pFileTo->zUuid)==0 ){
      /* No changes */
      pFileFrom = manifest_file_next(pFrom, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }else{
      append_file_change_line(pFileFrom->zName, 
                              pFileFrom->zUuid,
                              pFileTo->zUuid, showDetail);

      pFileFrom = manifest_file_next(pFrom, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }
  }
  manifest_destroy(pFrom);
  manifest_destroy(pTo);

................................................................................
    const char *zVers = db_column_text(&q, 4);
    if( cnt>0 ){
      @ Also file
    }else{
      @ File
    }
    if( g.okHistory ){
      @ <a href="%s(g.zBaseURL)/finfo?name=%T(zName)">%h(zName)</a>
    }else{
      @ %h(zName)
    }
    @ part of check-in
    hyperlink_to_uuid(zVers);
    @ - %w(zCom) by 
    hyperlink_to_user(zUser,zDate," on");
    hyperlink_to_date(zDate,".");




    cnt++;
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_append(pDownloadName, zName, -1);
    }
  }
  db_finalize(&q);
  db_prepare(&q, 
................................................................................
    const char *zUser = db_column_text(&q, 2);
    if( cnt>0 ){
      @ Also wiki page
    }else{
      @ Wiki page
    }
    if( g.okHistory ){
      @ [<a href="%s(g.zBaseURL)/wiki?name=%t(zPagename)">%h(zPagename)</a>]
    }else{
      @ [%h(zPagename)]
    }
    @ by
    hyperlink_to_user(zUser,zDate," on");
    hyperlink_to_date(zDate,".");
    nWiki++;
................................................................................
  db_finalize(&q);
  if( cnt==0 ){
    @ Control artifact.
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_appendf(pDownloadName, "%.10s.txt", zUuid);
    }
  }else if( linkToView && g.okHistory ){
    @ <a href="%s(g.zBaseURL)/artifact/%S(zUuid)">[view]</a>
  }
}


/*
** WEBPAGE: fdiff

**
** Two arguments, v1 and v2, are integers.  Show the difference between
** the two records.


*/
void diff_page(void){
  int v1, v2;

  Blob c1, c2, diff;



  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  v1 = name_to_rid_www("v1");
  v2 = name_to_rid_www("v2");
  if( v1==0 || v2==0 ) fossil_redirect_home();
















  style_header("Diff");


  @ <h2>Differences From:</h2>

  @ <blockquote><p>
  object_description(v1, 1, 0);
  @ </p></blockquote>
  @ <h2>To:</h2>

  @ <blockquote><p>
  object_description(v2, 1, 0);
  @ </p></blockquote>
  @ <hr />
  @ <blockquote><pre>
  content_get(v1, &c1);
  content_get(v2, &c2);
  blob_zero(&diff);
  text_diff(&c1, &c2, &diff, 4, 1);
  blob_reset(&c1);
  blob_reset(&c2);
  @ %h(blob_str(&diff))
  @ </pre></blockquote>
  blob_reset(&diff);
  style_footer();

}

/*
** WEBPAGE: raw
** URL: /raw?name=ARTIFACTID&m=TYPE
** 
** Return the uninterpreted content of an artifact.  Used primarily
................................................................................
  for(i=0; i<n; i+=16){
    j = 0;
    zLine[0] = zHex[(i>>24)&0xf];
    zLine[1] = zHex[(i>>16)&0xf];
    zLine[2] = zHex[(i>>8)&0xf];
    zLine[3] = zHex[i&0xf];
    zLine[4] = ':';
    sprintf(zLine, "%04x: ", i);
    for(j=0; j<16; j++){
      k = 5+j*3;
      zLine[k] = ' ';
      if( i+j<n ){
        unsigned char c = x[i+j];
        zLine[k+1] = zHex[c>>4];
        zLine[k+2] = zHex[c&0xf];
................................................................................
  zFilename = P("filename");
  if( zFilename==0 ) return 0;
  cirid = name_to_rid_www("ci");
  pManifest = manifest_get(cirid, CFTYPE_MANIFEST);
  if( pManifest==0 ) return 0;
  manifest_file_rewind(pManifest);
  while( (pFile = manifest_file_next(pManifest,0))!=0 ){
    if( strcmp(zFilename, pFile->zName)==0 ){
      int rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", pFile->zUuid);
      manifest_destroy(pManifest);
      return rid;
    }
  }
  return 0;
}






























































/*
** WEBPAGE: artifact
** URL: /artifact?name=ARTIFACTID
** URL: /artifact?ci=CHECKIN&filename=PATH
** 
................................................................................
  @ <blockquote><p>
  blob_zero(&downloadName);
  object_description(rid, 0, &downloadName);
  style_submenu_element("Download", "Download", 
          "%s/raw/%T?name=%s", g.zTop, blob_str(&downloadName), zUuid);
  zMime = mimetype_from_name(blob_str(&downloadName));
  if( zMime ){
    if( strcmp(zMime, "text/html")==0 ){
      if( P("txt") ){
        style_submenu_element("Html", "Html",
                              "%s/artifact?name=%s", g.zTop, zUuid);
      }else{
        renderAsHtml = 1;
        style_submenu_element("Text", "Text",
                              "%s/artifact?name=%s&amp;txt=1", g.zTop, zUuid);
      }
    }else if( strcmp(zMime, "application/x-fossil-wiki")==0 ){
      if( P("txt") ){
        style_submenu_element("Wiki", "Wiki",
                              "%s/artifact?name=%s", g.zTop, zUuid);
      }else{
        renderAsWiki = 1;
        style_submenu_element("Text", "Text",
                              "%s/artifact?name=%s&amp;txt=1", g.zTop, zUuid);
................................................................................
  if( renderAsWiki ){
    wiki_convert(&content, 0, 0);
  }else if( renderAsHtml ){
    @ <div>
    cgi_append_content(blob_buffer(&content), blob_size(&content));
    @ </div>
  }else{

    zMime = mimetype_from_content(&content);
    @ <blockquote>
    if( zMime==0 ){





      @ <pre>
      @ %h(blob_str(&content))

      @ </pre>
      style_submenu_element("Hex","Hex", "%s/hexdump?name=%s", g.zTop, zUuid);

    }else if( strncmp(zMime, "image/", 6)==0 ){
      @ <img src="%s(g.zBaseURL)/raw?name=%s(zUuid)&amp;m=%s(zMime)"></img>
      style_submenu_element("Hex","Hex", "%s/hexdump?name=%s", g.zTop, zUuid);
    }else{
      @ <pre>
      hexdump(&content);
      @ </pre>

    }
    @ </blockquote>
  }
  style_footer();
}  

/*
................................................................................
**
** Figure out what the artifact ID is and jump to it.
*/
void info_page(void){
  const char *zName;
  Blob uuid;
  int rid;

  
  zName = P("name");
  if( zName==0 ) fossil_redirect_home();
  if( validate16(zName, strlen(zName))
   && db_exists("SELECT 1 FROM ticket WHERE tkt_uuid GLOB '%q*'", zName) ){
    tktview_page();
    return;
  }





  blob_set(&uuid, zName);
  if( name_to_uuid(&uuid, 1) ){
    fossil_redirect_home();









  }
  zName = blob_str(&uuid);
  rid = db_int(0, "SELECT rid FROM blob WHERE uuid='%s'", zName);
  if( rid==0 ){
    style_header("Broken Link");
    @ <p>No such object: %h(zName)</p>
    style_footer();
................................................................................
  const char *zIdCustom       /* ID of text box for custom color */
){
  static const struct SampleColors {
     const char *zCName;
     const char *zColor;
  } aColor[] = {
     { "(none)",  "" },
     { "#f2dcdc", "#f2dcdc" },
     { "#f0ffc0", "#f0ffc0" },
     { "#bde5d6", "#bde5d6" },

     { "#c0ffc0", "#c0ffc0" },




     { "#c0fff0", "#c0fff0" },
     { "#c0f0ff", "#c0f0ff" },
     { "#d0c0ff", "#d0c0ff" },
     { "#ffc0ff", "#ffc0ff" },
     { "#ffc0d0", "#ffc0d0" },
     { "#fff0c0", "#fff0c0" },
     { "#c0c0c0", "#c0c0c0" },































     { "custom",  "##"      },
  };
  int nColor = sizeof(aColor)/sizeof(aColor[0])-1;
  int stdClrFound = 0;
  int i;

  @ <table border="0" cellpadding="0" cellspacing="1">
  if( zIdPropagate ){
................................................................................
    }else{
      @ <input type="checkbox" name="%s(zIdPropagate)" />
    }
    @ Propagate color to descendants</td></tr>
  }
  @ <tr>
  for(i=0; i<nColor; i++){
    if( aColor[i].zColor[0] ){


      @ <td style="background-color: %h(aColor[i].zColor);">
    }else{
      @ <td>
    }
    if( strcmp(zDefaultColor, aColor[i].zColor)==0 ){
      @ <input type="radio" name="%s(zId)" value="%h(aColor[i].zColor)"
      @  checked="checked" />
      stdClrFound=1;
    }else{
      @ <input type="radio" name="%s(zId)" value="%h(aColor[i].zColor)" />
    }
    @ %h(aColor[i].zCName)</td>
    if( (i%6)==5 && i+1<nColor ){
      @ </tr><tr>
    }
  }
  @ </tr><tr>
  if (stdClrFound){
    @ <td colspan="6">
    @ <input type="radio" name="%s(zId)" value="%h(aColor[nColor].zColor)" />
................................................................................
  const char *zColor;       
  const char *zNewColor;
  const char *zNewTagFlag;
  const char *zNewTag;
  const char *zNewBrFlag;
  const char *zNewBranch;
  const char *zCloseFlag;
  int fPropagateColor;

  char *zUuid;
  Blob comment;
  Stmt q;
  
  login_check_credentials();
  if( !g.okWrite ){ login_needed(); return; }
  rid = name_to_rid(P("r"));
................................................................................
  if( P("cancel") ){
    cgi_redirectf("ci?name=%s", zUuid);
  }
  zNewComment = PD("c",zComment);
  zUser = db_text(0, "SELECT coalesce(euser,user)"
                     "  FROM event WHERE objid=%d", rid);
  if( zUser==0 ) fossil_redirect_home();
  zNewUser = PD("u",zUser);
  zDate = db_text(0, "SELECT datetime(mtime)"
                     "  FROM event WHERE objid=%d", rid);
  if( zDate==0 ) fossil_redirect_home();
  zNewDate = PD("dt",zDate);
  zColor = db_text("", "SELECT bgcolor"
                        "  FROM event WHERE objid=%d", rid);
  zNewColor = PD("clr",zColor);
  if( strcmp(zNewColor,"##")==0 ){
    zNewColor = P("clrcust");
  }



  fPropagateColor = P("pclr")!=0;
  zNewTagFlag = P("newtag") ? " checked" : "";
  zNewTag = PD("tagname","");
  zNewBrFlag = P("newbr") ? " checked" : "";
  zNewBranch = PD("brname","");
  zCloseFlag = P("close") ? " checked" : "";
  if( P("apply") ){
    Blob ctrl;
    char *zDate;
    int nChng = 0;

    login_verify_csrf_secret();
    blob_zero(&ctrl);
    zDate = db_text(0, "SELECT datetime('now')");
    zDate[10] = 'T';
    blob_appendf(&ctrl, "D %s\n", zDate);
    db_multi_exec("CREATE TEMP TABLE newtags(tag UNIQUE, prefix, value)");
    if( zNewColor[0] && strcmp(zColor,zNewColor)!=0 ){


      char *zPrefix = "+";
      if( fPropagateColor ){
        zPrefix = "*";
      }
      db_multi_exec("REPLACE INTO newtags VALUES('bgcolor',%Q,%Q)",
                    zPrefix, zNewColor);
    }
    if( zNewColor[0]==0 && zColor[0]!=0 ){
      db_multi_exec("REPLACE INTO newtags VALUES('bgcolor','-',NULL)");
    }
    if( strcmp(zComment,zNewComment)!=0 ){
      db_multi_exec("REPLACE INTO newtags VALUES('comment','+',%Q)",
                    zNewComment);
    }
    if( strcmp(zDate,zNewDate)!=0 ){
      db_multi_exec("REPLACE INTO newtags VALUES('date','+',%Q)",
                    zNewDate);
    }
    if( strcmp(zUser,zNewUser)!=0 ){
      db_multi_exec("REPLACE INTO newtags VALUES('user','+',%Q)", zNewUser);
    }
    db_prepare(&q,
       "SELECT tag.tagid, tagname FROM tagxref, tag"
       " WHERE tagxref.rid=%d AND tagtype>0 AND tagxref.tagid=tag.tagid",
       rid
    );
    while( db_step(&q)==SQLITE_ROW ){
      int tagid = db_column_int(&q, 0);
      const char *zTag = db_column_text(&q, 1);
      char zLabel[30];
      sprintf(zLabel, "c%d", tagid);
      if( P(zLabel) ){
        db_multi_exec("REPLACE INTO newtags VALUES(%Q,'-',NULL)", zTag);
      }
    }
    db_finalize(&q);
    if( zCloseFlag[0] ){
      db_multi_exec("REPLACE INTO newtags VALUES('closed','+',NULL)");
    }
    if( zNewTagFlag[0] ){
      db_multi_exec("REPLACE INTO newtags VALUES('sym-%q','+',NULL)", zNewTag);
    }
    if( zNewBrFlag[0] ){
      db_multi_exec(
        "REPLACE INTO newtags "
        " SELECT tagname, '-', NULL FROM tagxref, tag"
        "  WHERE tagxref.rid=%d AND tagtype==2"
        "    AND tagname GLOB 'sym-*'"
        "    AND tag.tagid=tagxref.tagid",
        rid
................................................................................
      int nrid;
      Blob cksum;
      blob_appendf(&ctrl, "U %F\n", g.zLogin);
      md5sum_blob(&ctrl, &cksum);
      blob_appendf(&ctrl, "Z %b\n", &cksum);
      db_begin_transaction();
      g.markPrivate = content_is_private(rid);
      nrid = content_put(&ctrl, 0, 0);
      manifest_crosslink(nrid, &ctrl);

      db_end_transaction(0);
    }
    cgi_redirectf("ci?name=%s", zUuid);
  }
  blob_zero(&comment);
  blob_append(&comment, zNewComment, -1);
  zUuid[10] = 0;
................................................................................
    @ </td></tr></table>
    @ </blockquote>
    @ <hr />
    blob_reset(&suffix);
  }
  @ <p>Make changes to attributes of check-in
  @ [<a href="ci?name=%s(zUuid)">%s(zUuid)</a>]:</p>
  @ <form action="%s(g.zBaseURL)/ci_edit" method="post"><div>
  login_insert_csrf_secret();
  @ <input type="hidden" name="r" value="%S(zUuid)" />
  @ <table border="0" cellspacing="10">

  @ <tr><td align="right" valign="top"><b>User:</b></td>
  @ <td valign="top">
  @   <input type="text" name="u" size="20" value="%h(zNewUser)" />
................................................................................
  @ <tr><td align="right" valign="top"><b>Check-in Time:</b></td>
  @ <td valign="top">
  @   <input type="text" name="dt" size="20" value="%h(zNewDate)" />
  @ </td></tr>

  @ <tr><td align="right" valign="top"><b>Background Color:</b></td>
  @ <td valign="top">
  render_color_chooser(fPropagateColor, zNewColor, "pclr", "clr", "clrcust");
  @ </td></tr>

  @ <tr><td align="right" valign="top"><b>Tags:</b></td>
  @ <td valign="top">
  @ <input type="checkbox" name="newtag"%s(zNewTagFlag) />
  @ Add the following new tag name to this check-in:
  @ <input type="text" style="width:15;" name="tagname" value="%h(zNewTag)" />
................................................................................
     "               ELSE tagname END",
     rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    int tagid = db_column_int(&q, 0);
    const char *zTagName = db_column_text(&q, 1);
    char zLabel[30];
    sprintf(zLabel, "c%d", tagid);
    if( P(zLabel) ){
      @ <br /><input type="checkbox" name="c%d(tagid)" checked="checked" />
    }else{
      @ <br /><input type="checkbox" name="c%d(tagid)" />
    }
    if( strncmp(zTagName, "sym-", 4)==0 ){
      @ Cancel tag <b>%h(&zTagName[4])</b>

** Print common information about a particular record.
**
**     *  The UUID
**     *  The record ID
**     *  mtime and ctime
**     *  who signed it
*/
void show_common_info(
  int rid,                   /* The rid for the check-in to display info for */
  const char *zUuidName,     /* Name of the UUID */
  int showComment,           /* True to show the check-in comment */
  int showFamily             /* True to show parents and children */
){
  Stmt q;
  char *zComment = 0;
  char *zTags;
  char *zDate;
  char *zUuid;
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  if( zUuid ){
................................................................................
         /* 01234567890123 */
    printf("%-13s %s %s\n", zUuidName, zUuid, zDate ? zDate : "");
    free(zUuid);
    free(zDate);
  }
  if( zUuid && showComment ){
    zComment = db_text(0, 
      "SELECT coalesce(ecomment,comment) || "
      "       ' (user: ' || coalesce(euser,user,'?') || ')' "
      "  FROM event WHERE objid=%d",
      rid
    );
  }
  if( showFamily ){
    db_prepare(&q, "SELECT uuid, pid FROM plink JOIN blob ON pid=rid "
                   " WHERE cid=%d", rid);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zUuid = db_column_text(&q, 0);
      zDate = db_text("", 
        "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d",
        db_column_int(&q, 1)
      );
      printf("parent:       %s %s\n", zUuid, zDate);
      free(zDate);
    }
    db_finalize(&q);
    db_prepare(&q, "SELECT uuid, cid FROM plink JOIN blob ON cid=rid "
                   " WHERE pid=%d", rid);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zUuid = db_column_text(&q, 0);
      zDate = db_text("", 
        "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d",
        db_column_int(&q, 1)
      );
      printf("child:        %s %s\n", zUuid, zDate);
      free(zDate);
    }
    db_finalize(&q);
  }
  zTags = info_tags_of_checkin(rid, 0);
  if( zTags && zTags[0] ){
    printf("tags:         %s\n", zTags);
  }
  free(zTags);
  if( zComment ){
    printf("comment:      ");
................................................................................
  }
}


/*
** COMMAND: info
**
** Usage: %fossil info ?VERSION | REPOSITORY_FILENAME?
**
** With no arguments, provide information about the current tree.
** If an argument is specified, provide information about the object
** in the respository of the current tree that the argument refers
** to.  Or if the argument is the name of a repository, show
** information about that repository.
**
** Use the "finfo" command to get information about a specific
** file in a checkout.
*/
void info_cmd(void){
  i64 fsize;
  if( g.argc!=2 && g.argc!=3 ){
    usage("?FILENAME|ARTIFACT-ID?");
  }
  if( g.argc==3 && (fsize = file_size(g.argv[2]))>0 && (fsize&0x1ff)==0 ){
................................................................................
#endif
    printf("project-code: %s\n", db_get("project-code", ""));
    printf("server-code:  %s\n", db_get("server-code", ""));
    vid = db_lget_int("checkout", 0);
    if( vid==0 ){
      printf("checkout:     nil\n");
    }else{
      show_common_info(vid, "checkout:", 1, 1);
    }
  }else{
    int rid;
    rid = name_to_rid(g.argv[2]);
    if( rid==0 ){
      fossil_panic("no such object: %s\n", g.argv[2]);
    }
    show_common_info(rid, "uuid:", 1, 1);
  }
}

/*
** Show information about all tags on a given node.
*/
static void showTags(int rid, const char *zNotGlob){
................................................................................
    if( tagtype==2 ){
      if( zOrigUuid && zOrigUuid[0] ){
        @ inherited from
        hyperlink_to_uuid(zOrigUuid);
      }else{
        @ propagates to descendants
      }
#if 0
      if( zValue && strcmp(zTagname,"branch")==0 ){
        @   
        @ <a href="%s(g.zTop)/timeline?r=%T(zValue)">branch timeline</a>
      }
#endif
    }
    if( zSrcUuid && zSrcUuid[0] ){
      if( tagtype==0 ){
        @ by
      }else{
        @ added by
      }
................................................................................
** Write a line of web-page output that shows changes that have occurred 
** to a file between two check-ins.
*/
static void append_file_change_line(
  const char *zName,    /* Name of the file that has changed */
  const char *zOld,     /* blob.uuid before change.  NULL for added files */
  const char *zNew,     /* blob.uuid after change.  NULL for deletes */
  int showDiff,         /* Show edit diffs if true */
  int mperm             /* EXE permission for zNew */
){
  if( !g.okHistory ){
    if( zNew==0 ){
      @ <p>Deleted %h(zName)</p>
    }else if( zOld==0 ){
      @ <p>Added %h(zName)</p>
    }else if( fossil_strcmp(zNew, zOld)==0 ){
      @ <p>Execute permission %s(mperm?"set":"cleared") for %h(zName)</p>
    }else{
      @ <p>Changes to %h(zName)</p>
    }
    if( showDiff ){
      @ <blockquote><pre>
      append_diff(zOld, zNew);
      @ </pre></blockquote>
    }
  }else{
    if( zOld && zNew ){
      if( fossil_strcmp(zOld, zNew)!=0 ){
        @ <p>Modified <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
        @ from <a href="%s(g.zTop)/artifact/%s(zOld)">[%S(zOld)]</a>
        @ to <a href="%s(g.zTop)/artifact/%s(zNew)">[%S(zNew)].</a>
      }else{
        @ <p>Execute permission %s(mperm?"set":"cleared") for
        @ <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      }
    }else if( zOld ){
      @ <p>Deleted <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ version <a href="%s(g.zTop)/artifact/%s(zOld)">[%S(zOld)]</a>
    }else{
      @ <p>Added <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ version <a href="%s(g.zTop)/artifact/%s(zNew)">[%S(zNew)]</a>
    }
................................................................................
** "show-version-diffs" setting is turned on.
*/
void ci_page(void){
  Stmt q;
  int rid;
  int isLeaf;
  int showDiff;
  const char *zName;   /* Name of the checkin to be displayed */
  const char *zUuid;   /* UUID of zName */
  const char *zParent; /* UUID of the parent checkin (if any) */

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  zName = P("name");
  rid = name_to_rid_www("name");
  if( rid==0 ){
    style_header("Check-in Information Error");
    @ No such object: %h(g.argv[2])
    style_footer();
    return;
  }
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  zParent = db_text(0,
    "SELECT uuid FROM plink, blob"
    " WHERE plink.cid=%d AND blob.rid=plink.pid AND plink.isprim",
    rid
  );
  isLeaf = is_a_leaf(rid);
  db_prepare(&q, 
     "SELECT uuid, datetime(mtime, 'localtime'), user, comment,"
     "       datetime(omtime, 'localtime')"
     "  FROM blob, event"
     " WHERE blob.rid=%d"
     "   AND event.objid=%d",
     rid, rid
  );
  if( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    char *zTitle = mprintf("Check-in [%.10s]", zUuid);
    char *zEUser, *zEComment;
    const char *zUser;
    const char *zComment;
    const char *zDate;
    const char *zOrigDate;
    style_header(zTitle);
    login_anonymous_available();
    free(zTitle);
    zEUser = db_text(0,
                   "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d",
                    TAG_USER, rid);
    zEComment = db_text(0, 
                   "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d",
                   TAG_COMMENT, rid);
    zUser = db_column_text(&q, 2);
    zComment = db_column_text(&q, 3);
    zDate = db_column_text(&q,1);
    zOrigDate = db_column_text(&q, 4);
    @ <div class="section">Overview</div>
    @ <table class="label-value">
    @ <tr><th>SHA1&nbsp;Hash:</th><td>%s(zUuid)
    if( g.okSetup ){
      @ (Record ID: %d(rid))
    }
    @ </td></tr>
    @ <tr><th>Date:</th><td>
    hyperlink_to_date(zDate, "</td></tr>");
    if( zOrigDate && fossil_strcmp(zDate, zOrigDate)!=0 ){
      @ <tr><th>Original&nbsp;Date:</th><td>
      hyperlink_to_date(zOrigDate, "</td></tr>");
    }
    if( zEUser ){
      @ <tr><th>Edited&nbsp;User:</th><td>
      hyperlink_to_user(zEUser,zDate,"</td></tr>");
      @ <tr><th>Original&nbsp;User:</th><td>
      hyperlink_to_user(zUser,zDate,"</td></tr>");
    }else{
      @ <tr><th>User:</th><td>
................................................................................
        @ <td>%h(zUser) @ %h(zIpAddr) on %s(zDate)</td></tr>
      }
      db_finalize(&q);
    }
    if( g.okHistory ){
      const char *zProjName = db_get("project-name", "unnamed");
      @ <tr><th>Timelines:</th><td>
      @   <a href="%s(g.zTop)/timeline?f=%S(zUuid)">family</a>
      if( zParent ){
        @ | <a href="%s(g.zTop)/timeline?p=%S(zUuid)">ancestors</a>
      }
      if( !isLeaf ){
        @ | <a href="%s(g.zTop)/timeline?d=%S(zUuid)">descendants</a>
      }
      if( zParent && !isLeaf ){
        @ | <a href="%s(g.zTop)/timeline?d=%S(zUuid)&amp;p=%S(zUuid)">both</a>
      }
      db_prepare(&q, "SELECT substr(tag.tagname,5) FROM tagxref, tag "
                     " WHERE rid=%d AND tagtype>0 "
                     "   AND tag.tagid=tagxref.tagid "
                     "   AND +tag.tagname GLOB 'sym-*'", rid);
      while( db_step(&q)==SQLITE_ROW ){
        const char *zTagName = db_column_text(&q, 0);
        @  | <a href="%s(g.zTop)/timeline?r=%T(zTagName)">%h(zTagName)</a>
................................................................................
      }
      db_finalize(&q);
      @ </td></tr>
      @ <tr><th>Other&nbsp;Links:</th>
      @   <td>
      @     <a href="%s(g.zTop)/dir?ci=%S(zUuid)">files</a>
      if( g.okZip ){
        char *zUrl = mprintf("%s/tarball/%s-%S.tar.gz?uuid=%s",
                             g.zTop, zProjName, zUuid, zUuid);
        @ | <a href="%s(zUrl)">Tarball</a>
        @ | <a href="%s(g.zTop)/zip/%s(zProjName)-%S(zUuid).zip?uuid=%s(zUuid)">
        @         ZIP archive</a>
        fossil_free(zUrl);
      }
      @   | <a href="%s(g.zTop)/artifact/%S(zUuid)">manifest</a>
      if( g.okWrite ){
        @   | <a href="%s(g.zTop)/ci_edit?r=%S(zUuid)">edit</a>
      }
      @   </td>
      @ </tr>
................................................................................
    @ </table>
  }else{
    style_header("Check-in Information");
    login_anonymous_available();
  }
  db_finalize(&q);
  showTags(rid, "");
  if( zParent ){
    @ <div class="section">Changes</div>
    showDiff = g.zPath[0]!='c';
    if( db_get_boolean("show-version-diffs", 0)==0 ){
      showDiff = !showDiff;
      if( showDiff ){
        @ <a href="%s(g.zTop)/vinfo/%T(zName)">[hide&nbsp;diffs]</a>
      }else{
        @ <a href="%s(g.zTop)/ci/%T(zName)">[show&nbsp;diffs]</a>
      }
    }else{
      if( showDiff ){
        @ <a href="%s(g.zTop)/ci/%T(zName)">[hide&nbsp;diffs]</a>
      }else{
        @ <a href="%s(g.zTop)/vinfo/%T(zName)">[show&nbsp;diffs]</a>
      }
    }
    @ &nbsp;&nbsp;
    @ <a href="%s(g.zTop)/vpatch?from=%S(zParent)&to=%S(zUuid)">[patch]</a><br/>
    db_prepare(&q,
       "SELECT name, mperm,"
       "       (SELECT uuid FROM blob WHERE rid=mlink.pid),"
       "       (SELECT uuid FROM blob WHERE rid=mlink.fid)"
       "  FROM mlink JOIN filename ON filename.fnid=mlink.fnid"
       " WHERE mlink.mid=%d"
       " ORDER BY name",
       rid
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q,0);
      int mperm = db_column_int(&q, 1);
      const char *zOld = db_column_text(&q,2);
      const char *zNew = db_column_text(&q,3);
      append_file_change_line(zName, zOld, zNew, showDiff, mperm);
    }
    db_finalize(&q);
  }
  style_footer();
}

/*
** WEBPAGE: winfo
** URL:  /winfo?name=RID
**
................................................................................
      @ <tr><th>Record ID:</th><td>%d(rid)</td></tr>
    }
    @ <tr><th>Original&nbsp;User:</th><td>
    hyperlink_to_user(zUser, zDate, "</td></tr>");
    if( g.okHistory ){
      @ <tr><th>Commands:</th>
      @   <td>
      @     <a href="%s(g.zTop)/whistory?name=%t(zName)">history</a>
      @     | <a href="%s(g.zTop)/artifact/%S(zUuid)">raw-text</a>
      @   </td>
      @ </tr>
    }
    @ </table></p>
  }else{
    style_header("Wiki Information");
    rid = 0;
................................................................................
  while( pFileFrom || pFileTo ){
    int cmp;
    if( pFileFrom==0 ){
      cmp = +1;
    }else if( pFileTo==0 ){
      cmp = -1;
    }else{
      cmp = fossil_strcmp(pFileFrom->zName, pFileTo->zName);
    }
    if( cmp<0 ){
      append_file_change_line(pFileFrom->zName, 
                              pFileFrom->zUuid, 0, 0, 0);
      pFileFrom = manifest_file_next(pFrom, 0);
    }else if( cmp>0 ){
      append_file_change_line(pFileTo->zName, 
                              0, pFileTo->zUuid, 0,
                              manifest_file_mperm(pFileTo));
      pFileTo = manifest_file_next(pTo, 0);
    }else if( fossil_strcmp(pFileFrom->zUuid, pFileTo->zUuid)==0 ){
      /* No changes */
      pFileFrom = manifest_file_next(pFrom, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }else{
      append_file_change_line(pFileFrom->zName, 
                              pFileFrom->zUuid,
                              pFileTo->zUuid, showDetail,
                              manifest_file_mperm(pFileTo));
      pFileFrom = manifest_file_next(pFrom, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }
  }
  manifest_destroy(pFrom);
  manifest_destroy(pTo);

................................................................................
    const char *zVers = db_column_text(&q, 4);
    if( cnt>0 ){
      @ Also file
    }else{
      @ File
    }
    if( g.okHistory ){
      @ <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
    }else{
      @ %h(zName)
    }
    @ part of check-in
    hyperlink_to_uuid(zVers);
    @ - %w(zCom) by 
    hyperlink_to_user(zUser,zDate," on");
    hyperlink_to_date(zDate,".");
    if( g.okHistory ){
      @ <a href="%s(g.zTop)/annotate?checkin=%S(zVers)&filename=%T(zName)">
      @ [annotate]</a>
    }
    cnt++;
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_append(pDownloadName, zName, -1);
    }
  }
  db_finalize(&q);
  db_prepare(&q, 
................................................................................
    const char *zUser = db_column_text(&q, 2);
    if( cnt>0 ){
      @ Also wiki page
    }else{
      @ Wiki page
    }
    if( g.okHistory ){
      @ [<a href="%s(g.zTop)/wiki?name=%t(zPagename)">%h(zPagename)</a>]
    }else{
      @ [%h(zPagename)]
    }
    @ by
    hyperlink_to_user(zUser,zDate," on");
    hyperlink_to_date(zDate,".");
    nWiki++;
................................................................................
  db_finalize(&q);
  if( cnt==0 ){
    @ Control artifact.
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_appendf(pDownloadName, "%.10s.txt", zUuid);
    }
  }else if( linkToView && g.okHistory ){
    @ <a href="%s(g.zTop)/artifact/%S(zUuid)">[view]</a>
  }
}


/*
** WEBPAGE: fdiff
** URL: fdiff?v1=UUID&v2=UUID&patch
**
** Two arguments, v1 and v2, identify the files to be diffed.  Show the 

** difference between the two artifacts.  Generate plaintext if "patch"
** is present.
*/
void diff_page(void){
  int v1, v2;
  int isPatch;
  Blob c1, c2, diff, *pOut;
  char *zV1;
  char *zV2;

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  v1 = name_to_rid_www("v1");
  v2 = name_to_rid_www("v2");
  if( v1==0 || v2==0 ) fossil_redirect_home();
  zV1 = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", v1);
  zV2 = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", v2);
  isPatch = P("patch")!=0;
  if( isPatch ){
    pOut = cgi_output_blob();
    cgi_set_content_type("text/plain");
  }else{
    blob_zero(&diff);
    pOut = &diff;
  }
  content_get(v1, &c1);
  content_get(v2, &c2);
  text_diff(&c1, &c2, pOut, 4, 1);
  blob_reset(&c1);
  blob_reset(&c2);
  if( !isPatch ){
    style_header("Diff");
    style_submenu_element("Patch", "Patch", "%s/fdiff?v1=%T&v2=%T&patch",
                          g.zTop, P("v1"), P("v2"));
    @ <h2>Differences From
    @ Artifact <a href="%s(g.zTop)/artifact/%S(zV1)">[%S(zV1)]</a>:</h2>
    @ <blockquote><p>
    object_description(v1, 1, 0);
    @ </p></blockquote>

    @ <h2>To Artifact <a href="%s(g.zTop)/artifact/%S(zV2)">[%S(zV2)]</a>:</h2>
    @ <blockquote><p>
    object_description(v2, 1, 0);
    @ </p></blockquote>
    @ <hr />
    @ <blockquote><pre>






    @ %h(blob_str(&diff))
    @ </pre></blockquote>
    blob_reset(&diff);
    style_footer();
  }
}

/*
** WEBPAGE: raw
** URL: /raw?name=ARTIFACTID&m=TYPE
** 
** Return the uninterpreted content of an artifact.  Used primarily
................................................................................
  for(i=0; i<n; i+=16){
    j = 0;
    zLine[0] = zHex[(i>>24)&0xf];
    zLine[1] = zHex[(i>>16)&0xf];
    zLine[2] = zHex[(i>>8)&0xf];
    zLine[3] = zHex[i&0xf];
    zLine[4] = ':';
    sqlite3_snprintf(sizeof(zLine), zLine, "%04x: ", i);
    for(j=0; j<16; j++){
      k = 5+j*3;
      zLine[k] = ' ';
      if( i+j<n ){
        unsigned char c = x[i+j];
        zLine[k+1] = zHex[c>>4];
        zLine[k+2] = zHex[c&0xf];
................................................................................
  zFilename = P("filename");
  if( zFilename==0 ) return 0;
  cirid = name_to_rid_www("ci");
  pManifest = manifest_get(cirid, CFTYPE_MANIFEST);
  if( pManifest==0 ) return 0;
  manifest_file_rewind(pManifest);
  while( (pFile = manifest_file_next(pManifest,0))!=0 ){
    if( fossil_strcmp(zFilename, pFile->zName)==0 ){
      int rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", pFile->zUuid);
      manifest_destroy(pManifest);
      return rid;
    }
  }
  return 0;
}

/*
** The "z" argument is a string that contains the text of a source code
** file.  This routine appends that text to the HTTP reply with line numbering.
**
** zLn is the ?ln= parameter for the HTTP query.  If there is an argument,
** then highlight that line number and scroll to it once the page loads.
** If there are two line numbers, highlight the range of lines.
*/
static void output_text_with_line_numbers(
  const char *z,
  const char *zLn
){
  int iStart, iEnd;    /* Start and end of region to highlight */
  int n = 0;           /* Current line number */
  int i;               /* Loop index */
  int iTop = 0;        /* Scroll so that this line is on top of screen. */

  iStart = iEnd = atoi(zLn);
  if( iStart>0 ){
    for(i=0; fossil_isdigit(zLn[i]); i++){}
    if( zLn[i]==',' || zLn[i]=='-' || zLn[i]=='.' ){
      i++;
      while( zLn[i]=='.' ){ i++; }
      iEnd = atoi(&zLn[i]);
    }
    if( iEnd<iStart ) iEnd = iStart;
    iTop = iStart - 15 + (iEnd-iStart)/4;
    if( iTop>iStart - 2 ) iTop = iStart-2;
  }
  @ <pre>
  while( z[0] ){
    n++;
    for(i=0; z[i] && z[i]!='\n'; i++){}
    if( n==iTop ) cgi_append_content("<span id=\"topln\">", -1);
    if( n==iStart ){
      cgi_append_content("<div class=\"selectedText\">",-1);
    }
    cgi_printf("%6d  ", n);
    if( i>0 ){
      char *zHtml = htmlize(z, i);
      cgi_append_content(zHtml, -1);
      fossil_free(zHtml);
    }
    if( n==iStart-15 ) cgi_append_content("</span>", -1);
    if( n==iEnd ) cgi_append_content("</div>", -1);
    else cgi_append_content("\n", 1);
    z += i;
    if( z[0]=='\n' ) z++;
  }
  if( n<iEnd ) cgi_printf("</div>");
  @ </pre>
  if( iStart ){
    @ <script type="text/JavaScript">
    @ /* <![CDATA[ */
    @ document.getElementById('topln').scrollIntoView(true);
    @ /* ]]> */
    @ </script>
  }
}


/*
** WEBPAGE: artifact
** URL: /artifact?name=ARTIFACTID
** URL: /artifact?ci=CHECKIN&filename=PATH
** 
................................................................................
  @ <blockquote><p>
  blob_zero(&downloadName);
  object_description(rid, 0, &downloadName);
  style_submenu_element("Download", "Download", 
          "%s/raw/%T?name=%s", g.zTop, blob_str(&downloadName), zUuid);
  zMime = mimetype_from_name(blob_str(&downloadName));
  if( zMime ){
    if( fossil_strcmp(zMime, "text/html")==0 ){
      if( P("txt") ){
        style_submenu_element("Html", "Html",
                              "%s/artifact?name=%s", g.zTop, zUuid);
      }else{
        renderAsHtml = 1;
        style_submenu_element("Text", "Text",
                              "%s/artifact?name=%s&amp;txt=1", g.zTop, zUuid);
      }
    }else if( fossil_strcmp(zMime, "application/x-fossil-wiki")==0 ){
      if( P("txt") ){
        style_submenu_element("Wiki", "Wiki",
                              "%s/artifact?name=%s", g.zTop, zUuid);
      }else{
        renderAsWiki = 1;
        style_submenu_element("Text", "Text",
                              "%s/artifact?name=%s&amp;txt=1", g.zTop, zUuid);
................................................................................
  if( renderAsWiki ){
    wiki_convert(&content, 0, 0);
  }else if( renderAsHtml ){
    @ <div>
    cgi_append_content(blob_buffer(&content), blob_size(&content));
    @ </div>
  }else{
    style_submenu_element("Hex","Hex", "%s/hexdump?name=%s", g.zTop, zUuid);
    zMime = mimetype_from_content(&content);
    @ <blockquote>
    if( zMime==0 ){
      const char *zLn = P("ln");
      const char *z = blob_str(&content);
      if( zLn ){
        output_text_with_line_numbers(z, zLn);
      }else{
        @ <pre>

        @ %h(z)
        @ </pre>

      }
    }else if( strncmp(zMime, "image/", 6)==0 ){
      @ <img src="%s(g.zTop)/raw?name=%s(zUuid)&amp;m=%s(zMime)"></img>

    }else{



      @ <i>(file is %d(blob_size(&content)) bytes of binary data)</i>
    }
    @ </blockquote>
  }
  style_footer();
}  

/*
................................................................................
**
** Figure out what the artifact ID is and jump to it.
*/
void info_page(void){
  const char *zName;
  Blob uuid;
  int rid;
  int rc;
  
  zName = P("name");
  if( zName==0 ) fossil_redirect_home();
  if( validate16(zName, strlen(zName)) ){
    if( db_exists("SELECT 1 FROM ticket WHERE tkt_uuid GLOB '%q*'", zName) ){
      tktview_page();
      return;
    }
    if( db_exists("SELECT 1 FROM tag WHERE tagname GLOB 'event-%q*'", zName) ){
      event_page();
      return;
    }
  }
  blob_set(&uuid, zName);
  rc = name_to_uuid(&uuid, -1);

  if( rc==1 ){
    style_header("No Such Object");
    @ <p>No such object: %h(zName)</p>
    style_footer();
    return;
  }else if( rc==2 ){
    cgi_set_parameter("src","info");
    ambiguous_page();
    return;
  }
  zName = blob_str(&uuid);
  rid = db_int(0, "SELECT rid FROM blob WHERE uuid='%s'", zName);
  if( rid==0 ){
    style_header("Broken Link");
    @ <p>No such object: %h(zName)</p>
    style_footer();
................................................................................
  const char *zIdCustom       /* ID of text box for custom color */
){
  static const struct SampleColors {
     const char *zCName;
     const char *zColor;
  } aColor[] = {
     { "(none)",  "" },
     { "#f2dcdc", 0 },

     { "#bde5d6", 0 },
     { "#a0a0a0", 0 },
     { "#b0b0b0", 0 },
     { "#c0c0c0", 0 },
     { "#d0d0d0", 0 },
     { "#e0e0e0", 0 },

     { "#c0fff0", 0 },
     { "#c0f0ff", 0 },
     { "#d0c0ff", 0 },
     { "#ffc0ff", 0 },
     { "#ffc0d0", 0 },
     { "#fff0c0", 0 },

     { "#f0ffc0", 0 },
     { "#c0ffc0", 0 },

     { "#a8d3c0", 0 },
     { "#a8c7d3", 0 },
     { "#aaa8d3", 0 },
     { "#cba8d3", 0 },
     { "#d3a8bc", 0 },
     { "#d3b5a8", 0 },
     { "#d1d3a8", 0 },
     { "#b1d3a8", 0 },

     { "#8eb2a1", 0 }, 
     { "#8ea7b2", 0 },
     { "#8f8eb2", 0 },
     { "#ab8eb2", 0 },
     { "#b28e9e", 0 },
     { "#b2988e", 0 },
     { "#b0b28e", 0 },
     { "#95b28e", 0 },

     { "#80d6b0", 0 }, 
     { "#80bbd6", 0 },
     { "#8680d6", 0 },
     { "#c680d6", 0 },
     { "#d680a6", 0 },
     { "#d69b80", 0 },
     { "#d1d680", 0 },
     { "#91d680", 0 },
    

     { "custom",  "##" },
  };
  int nColor = sizeof(aColor)/sizeof(aColor[0])-1;
  int stdClrFound = 0;
  int i;

  @ <table border="0" cellpadding="0" cellspacing="1">
  if( zIdPropagate ){
................................................................................
    }else{
      @ <input type="checkbox" name="%s(zIdPropagate)" />
    }
    @ Propagate color to descendants</td></tr>
  }
  @ <tr>
  for(i=0; i<nColor; i++){
    const char *zClr = aColor[i].zColor;
    if( zClr==0 ) zClr = aColor[i].zCName;
    if( zClr[0] ){
      @ <td style="background-color: %h(zClr);">
    }else{
      @ <td>
    }
    if( fossil_strcmp(zDefaultColor, zClr)==0 ){
      @ <input type="radio" name="%s(zId)" value="%h(zClr)"
      @  checked="checked" />
      stdClrFound=1;
    }else{
      @ <input type="radio" name="%s(zId)" value="%h(zClr)" />
    }
    @ %h(aColor[i].zCName)</td>
    if( (i%8)==7 && i+1<nColor ){
      @ </tr><tr>
    }
  }
  @ </tr><tr>
  if (stdClrFound){
    @ <td colspan="6">
    @ <input type="radio" name="%s(zId)" value="%h(aColor[nColor].zColor)" />
................................................................................
  const char *zColor;       
  const char *zNewColor;
  const char *zNewTagFlag;
  const char *zNewTag;
  const char *zNewBrFlag;
  const char *zNewBranch;
  const char *zCloseFlag;
  int fPropagateColor;          /* True if color propagates before edit */
  int fNewPropagateColor;       /* True if color propagates after edit */
  char *zUuid;
  Blob comment;
  Stmt q;
  
  login_check_credentials();
  if( !g.okWrite ){ login_needed(); return; }
  rid = name_to_rid(P("r"));
................................................................................
  if( P("cancel") ){
    cgi_redirectf("ci?name=%s", zUuid);
  }
  zNewComment = PD("c",zComment);
  zUser = db_text(0, "SELECT coalesce(euser,user)"
                     "  FROM event WHERE objid=%d", rid);
  if( zUser==0 ) fossil_redirect_home();
  zNewUser = PDT("u",zUser);
  zDate = db_text(0, "SELECT datetime(mtime)"
                     "  FROM event WHERE objid=%d", rid);
  if( zDate==0 ) fossil_redirect_home();
  zNewDate = PDT("dt",zDate);
  zColor = db_text("", "SELECT bgcolor"
                        "  FROM event WHERE objid=%d", rid);
  zNewColor = PDT("clr",zColor);
  if( fossil_strcmp(zNewColor,"##")==0 ){
    zNewColor = PT("clrcust");
  }
  fPropagateColor = db_int(0, "SELECT tagtype FROM tagxref"
                              " WHERE rid=%d AND tagid=%d",
                              rid, TAG_BGCOLOR)==2;
  fNewPropagateColor = P("clr")!=0 ? P("pclr")!=0 : fPropagateColor;
  zNewTagFlag = P("newtag") ? " checked" : "";
  zNewTag = PDT("tagname","");
  zNewBrFlag = P("newbr") ? " checked" : "";
  zNewBranch = PDT("brname","");
  zCloseFlag = P("close") ? " checked" : "";
  if( P("apply") ){
    Blob ctrl;
    char *zNow;
    int nChng = 0;

    login_verify_csrf_secret();
    blob_zero(&ctrl);
    zNow = date_in_standard_format("now");

    blob_appendf(&ctrl, "D %s\n", zNow);
    db_multi_exec("CREATE TEMP TABLE newtags(tag UNIQUE, prefix, value)");
    if( zNewColor[0]
     && (fPropagateColor!=fNewPropagateColor || strcmp(zColor,zNewColor)!=0)
    ){
      char *zPrefix = "+";
      if( fNewPropagateColor ){
        zPrefix = "*";
      }
      db_multi_exec("REPLACE INTO newtags VALUES('bgcolor',%Q,%Q)",
                    zPrefix, zNewColor);
    }
    if( zNewColor[0]==0 && zColor[0]!=0 ){
      db_multi_exec("REPLACE INTO newtags VALUES('bgcolor','-',NULL)");
    }
    if( fossil_strcmp(zComment,zNewComment)!=0 ){
      db_multi_exec("REPLACE INTO newtags VALUES('comment','+',%Q)",
                    zNewComment);
    }
    if( fossil_strcmp(zDate,zNewDate)!=0 ){
      db_multi_exec("REPLACE INTO newtags VALUES('date','+',%Q)",
                    zNewDate);
    }
    if( fossil_strcmp(zUser,zNewUser)!=0 ){
      db_multi_exec("REPLACE INTO newtags VALUES('user','+',%Q)", zNewUser);
    }
    db_prepare(&q,
       "SELECT tag.tagid, tagname FROM tagxref, tag"
       " WHERE tagxref.rid=%d AND tagtype>0 AND tagxref.tagid=tag.tagid",
       rid
    );
    while( db_step(&q)==SQLITE_ROW ){
      int tagid = db_column_int(&q, 0);
      const char *zTag = db_column_text(&q, 1);
      char zLabel[30];
      sqlite3_snprintf(sizeof(zLabel), zLabel, "c%d", tagid);
      if( P(zLabel) ){
        db_multi_exec("REPLACE INTO newtags VALUES(%Q,'-',NULL)", zTag);
      }
    }
    db_finalize(&q);
    if( zCloseFlag[0] ){
      db_multi_exec("REPLACE INTO newtags VALUES('closed','+',NULL)");
    }
    if( zNewTagFlag[0] && zNewTag[0] ){
      db_multi_exec("REPLACE INTO newtags VALUES('sym-%q','+',NULL)", zNewTag);
    }
    if( zNewBrFlag[0] && zNewBranch[0] ){
      db_multi_exec(
        "REPLACE INTO newtags "
        " SELECT tagname, '-', NULL FROM tagxref, tag"
        "  WHERE tagxref.rid=%d AND tagtype==2"
        "    AND tagname GLOB 'sym-*'"
        "    AND tag.tagid=tagxref.tagid",
        rid
................................................................................
      int nrid;
      Blob cksum;
      blob_appendf(&ctrl, "U %F\n", g.zLogin);
      md5sum_blob(&ctrl, &cksum);
      blob_appendf(&ctrl, "Z %b\n", &cksum);
      db_begin_transaction();
      g.markPrivate = content_is_private(rid);
      nrid = content_put(&ctrl);
      manifest_crosslink(nrid, &ctrl);
      assert( blob_is_reset(&ctrl) );
      db_end_transaction(0);
    }
    cgi_redirectf("ci?name=%s", zUuid);
  }
  blob_zero(&comment);
  blob_append(&comment, zNewComment, -1);
  zUuid[10] = 0;
................................................................................
    @ </td></tr></table>
    @ </blockquote>
    @ <hr />
    blob_reset(&suffix);
  }
  @ <p>Make changes to attributes of check-in
  @ [<a href="ci?name=%s(zUuid)">%s(zUuid)</a>]:</p>
  @ <form action="%s(g.zTop)/ci_edit" method="post"><div>
  login_insert_csrf_secret();
  @ <input type="hidden" name="r" value="%S(zUuid)" />
  @ <table border="0" cellspacing="10">

  @ <tr><td align="right" valign="top"><b>User:</b></td>
  @ <td valign="top">
  @   <input type="text" name="u" size="20" value="%h(zNewUser)" />
................................................................................
  @ <tr><td align="right" valign="top"><b>Check-in Time:</b></td>
  @ <td valign="top">
  @   <input type="text" name="dt" size="20" value="%h(zNewDate)" />
  @ </td></tr>

  @ <tr><td align="right" valign="top"><b>Background Color:</b></td>
  @ <td valign="top">
  render_color_chooser(fNewPropagateColor, zNewColor, "pclr", "clr", "clrcust");
  @ </td></tr>

  @ <tr><td align="right" valign="top"><b>Tags:</b></td>
  @ <td valign="top">
  @ <input type="checkbox" name="newtag"%s(zNewTagFlag) />
  @ Add the following new tag name to this check-in:
  @ <input type="text" style="width:15;" name="tagname" value="%h(zNewTag)" />
................................................................................
     "               ELSE tagname END",
     rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    int tagid = db_column_int(&q, 0);
    const char *zTagName = db_column_text(&q, 1);
    char zLabel[30];
    sqlite3_snprintf(sizeof(zLabel), zLabel, "c%d", tagid);
    if( P(zLabel) ){
      @ <br /><input type="checkbox" name="c%d(tagid)" checked="checked" />
    }else{
      @ <br /><input type="checkbox" name="c%d(tagid)" />
    }
    if( strncmp(zTagName, "sym-", 4)==0 ){
      @ Cancel tag <b>%h(&zTagName[4])</b>

/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to manage the "leaf" table of the
** repository.
**
** The LEAF table contains the rids for all leaves in the checkin DAG.
** A leaf is a checkin that has no children in the same branch.
*/
#include "config.h"
#include "leaf.h"
#include <assert.h>


/*
** Return true if the check-in with RID=rid is a leaf.
**
** A leaf has no children in the same branch. 
*/
int is_a_leaf(int rid){
  int rc;
  static const char zSql[] = 
    @ SELECT 1 FROM plink
    @  WHERE pid=%d
    @    AND coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.pid), 'trunk')
    @       =coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.cid), 'trunk')
  ;
  rc = db_int(0, zSql, rid, TAG_BRANCH, TAG_BRANCH);
  return rc==0;
}

/*
** Count the number of primary non-branch children for the given check-in.
**
** A primary child is one where the parent is the primary parent, not
** a merge parent.  A "leaf" is a node that has zero children of any
** kind.  This routine counts only primary children.
**
** A non-branch child is one which is on the same branch as the parent.
*/
int count_nonbranch_children(int pid){
  int nNonBranch = 0;
  static Stmt q;
  static const char zSql[] = 
    @ SELECT count(*) FROM plink
    @  WHERE pid=:pid AND isprim
    @    AND coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.pid), 'trunk')
    @       =coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.cid), 'trunk')
  ;
  db_static_prepare(&q, zSql, TAG_BRANCH, TAG_BRANCH);
  db_bind_int(&q, ":pid", pid);
  if( db_step(&q)==SQLITE_ROW ){
    nNonBranch = db_column_int(&q, 0);
  }
  db_reset(&q);
  return nNonBranch;
}


/*
** Recompute the entire LEAF table.  
**
** This can be expensive (5 seconds or so) for a really large repository.
** So it is only done for things like a rebuild.
*/
void leaf_rebuild(void){
  db_multi_exec(
    "DELETE FROM leaf;"
    "INSERT OR IGNORE INTO leaf"
    "  SELECT cid FROM plink"
    "  EXCEPT"
    "  SELECT pid FROM plink"
    "   WHERE coalesce((SELECT value FROM tagxref"
                       " WHERE tagid=%d AND rid=plink.pid),'trunk')"
         " == coalesce((SELECT value FROM tagxref"
                       " WHERE tagid=%d AND rid=plink.cid),'trunk')",
    TAG_BRANCH, TAG_BRANCH
  );
}

/*
** A bag of checkins whose leaf status needs to be checked.
*/
static Bag needToCheck;

/*
** Check to see if checkin "rid" is a leaf and either add it to the LEAF
** table if it is, or remove it if it is not.
*/
void leaf_check(int rid){
  static Stmt checkIfLeaf;
  static Stmt addLeaf;
  static Stmt removeLeaf;
  int rc;

  db_static_prepare(&checkIfLeaf,
    "SELECT 1 FROM plink"
    " WHERE pid=:rid"
    "   AND coalesce((SELECT value FROM tagxref"
                    " WHERE tagid=%d AND rid=:rid),'trunk')"
       " == coalesce((SELECT value FROM tagxref"
                    " WHERE tagid=%d AND rid=plink.cid),'trunk');",
    TAG_BRANCH, TAG_BRANCH
  );
  db_bind_int(&checkIfLeaf, ":rid", rid);
  rc = db_step(&checkIfLeaf);
  db_reset(&checkIfLeaf);
  if( rc==SQLITE_ROW ){
    db_static_prepare(&removeLeaf, "DELETE FROM leaf WHERE rid=:rid");
    db_bind_int(&removeLeaf, ":rid", rid);
    db_step(&removeLeaf);
    db_reset(&removeLeaf);
  }else{
    db_static_prepare(&addLeaf, "INSERT OR IGNORE INTO leaf VALUES(:rid)");
    db_bind_int(&addLeaf, ":rid", rid);
    db_step(&addLeaf);
    db_reset(&addLeaf);
  }
}

/*
** Return an SQL expression (stored in memory obtained from fossil_malloc())
** that is true if the SQL variable named "zVar" contains the rid with
** a CLOSED tag.  In other words, return true if the leaf is closed.
**
** The result can be prefaced with a NOT operator to get all leaves that
** are open.
*/
char *leaf_is_closed_sql(const char *zVar){
  return mprintf(
    "EXISTS(SELECT 1 FROM tagxref AS tx"
           " WHERE tx.rid=%s"
             " AND tx.tagid=%d"
             " AND tx.tagtype>0)",
    zVar, TAG_CLOSED
  );
}

/*
** Schedule a leaf check for "rid" and its parents.
*/
void leaf_eventually_check(int rid){
  static Stmt parentsOf;

  db_static_prepare(&parentsOf, 
     "SELECT pid FROM plink WHERE cid=:rid AND pid>0"
  );
  db_bind_int(&parentsOf, ":rid", rid);
  bag_insert(&needToCheck, rid);
  while( db_step(&parentsOf)==SQLITE_ROW ){
    bag_insert(&needToCheck, db_column_int(&parentsOf, 0));
  }
  db_reset(&parentsOf);
}

/*
** Do all pending leaf checks.
*/
void leaf_do_pending_checks(void){
  int rid;
  for(rid=bag_first(&needToCheck); rid; rid=bag_next(&needToCheck,rid)){
    leaf_check(rid);
  }
  bag_clear(&needToCheck);
}

**
*******************************************************************************
**
** This file contains code for generating the login and logout screens.
**
** Notes:
**
** There are two special-case user-ids: "anonymous" and "nobody".


** The capabilities of the nobody user are available to anyone,
** regardless of whether or not they are logged in.  The capabilities
** of anonymous are only available after logging in, but the login
** screen displays the password for the anonymous login, so this
** should not prevent a human user from doing so.


**
** The nobody user has capabilities that you want spiders to have.
** The anonymous user has capabilities that you want people without
** logins to have.
**
** Of course, a sophisticated spider could easily circumvent the
** anonymous login requirement and walk the website.  But that is
................................................................................
#  if defined(__MINGW32__) || defined(_MSC_VER)
#    define sleep Sleep            /* windows does not have sleep, but Sleep */
#  endif
#endif
#include <time.h>

/*




























** Return the name of the login cookie




*/
static char *login_cookie_name(void){
  static char *zCookieName = 0;
  if( zCookieName==0 ){
    unsigned int h = 0;
    const char *z = g.zBaseURL;
    while( *z ){ h = (h<<3) ^ (h>>26) ^ *(z++); }
    zCookieName = mprintf("fossil_login_%08x", h);





  }
  return zCookieName;
}

/*
** Redirect to the page specified by the "g" query parameter.
** Or if there is no "g" query parameter, redirect to the homepage.
................................................................................
    cgi_redirect(zGoto);
  }else{
    fossil_redirect_home();
  }
}

/*
** The IP address of the client is stored as part of the anonymous
** login cookie for additional security.  But some clients are behind
** firewalls that shift the IP address with each HTTP request.  To
** allow such (broken) clients to log in, extract just a prefix of the
** IP address.  
*/
static char *ipPrefix(const char *zIP){
  int i, j; 
  for(i=j=0; zIP[i]; i++){
    if( zIP[i]=='.' ){
      j++;
      if( j==2 ) break;
    }
  }
  return mprintf("%.*s", i, zIP);
}
        











/*
** Check to see if the anonymous login is valid.  If it is valid, return
** the userid of the anonymous user.
*/
static int isValidAnonymousLogin(
  const char *zUsername,  /* The username.  Must be "anonymous" */
................................................................................

  if( zUsername==0 ) return 0;
  if( zPassword==0 ) return 0;
  if( strcmp(zUsername,"anonymous")!=0 ) return 0;
  zCS = P("cs");   /* The "cs" parameter is the "captcha seed" */
  if( zCS==0 ) return 0;
  zPw = captcha_decode((unsigned int)atoi(zCS));
  if( strcasecmp(zPw, zPassword)!=0 ) return 0;
  uid = db_int(0, "SELECT uid FROM user WHERE login='anonymous'"
                  " AND length(pw)>0 AND length(cap)>0");
  return uid;
}
































/*
** WEBPAGE: login
** WEBPAGE: logout
** WEBPAGE: my
**
** Generate the login page.
................................................................................
  const char *zUsername, *zPasswd;
  const char *zNew1, *zNew2;
  const char *zAnonPw = 0;
  int anonFlag;
  char *zErrMsg = "";
  int uid;                     /* User id loged in user */
  char *zSha1Pw;



  login_check_credentials();
  zUsername = P("u");
  zPasswd = P("p");
  anonFlag = P("anon")!=0;
  if( P("out")!=0 ){

    const char *zCookieName = login_cookie_name();
    cgi_set_cookie(zCookieName, "", 0, -86400);
    redirect_to_g();
  }
  if( g.okPassword && zPasswd && (zNew1 = P("n1"))!=0 && (zNew2 = P("n2"))!=0 ){

    zSha1Pw = sha1_shared_secret(zPasswd, g.zLogin);
    if( db_int(1, "SELECT 0 FROM user"
                  " WHERE uid=%d AND (pw=%Q OR pw=%Q)", 
                  g.userUid, zPasswd, zSha1Pw) ){
      sleep(1);
      zErrMsg = 
         @ <p><span class="loginError">
         @ You entered an incorrect old password while attempting to change
         @ your password.  Your password is unchanged.
         @ </span></p>
      ;
    }else if( strcmp(zNew1,zNew2)!=0 ){
      zErrMsg = 
         @ <p><span class="loginError">
         @ The two copies of your new passwords do not match.
         @ Your password is unchanged.
         @ </span></p>
      ;
    }else{
      char *zNewPw = sha1_shared_secret(zNew1, g.zLogin);


      db_multi_exec(
         "UPDATE user SET pw=%Q WHERE uid=%d", zNewPw, g.userUid
      );












      redirect_to_g();
      return;
    }
  }



  uid = isValidAnonymousLogin(zUsername, zPasswd);
  if( uid>0 ){








    char *zNow;                  /* Current time (julian day number) */
    const char *zIpAddr;         /* IP address of requestor */
    char *zCookie;               /* The login cookie */
    const char *zCookieName;     /* Name of the login cookie */
    Blob b;                      /* Blob used during cookie construction */

    zIpAddr = PD("REMOTE_ADDR","nil");
    zCookieName = login_cookie_name();
    zNow = db_text("0", "SELECT julianday('now')");
    blob_init(&b, zNow, -1);
    blob_appendf(&b, "/%z/%s", ipPrefix(zIpAddr), db_get("captcha-secret",""));
    sha1sum_blob(&b, &b);
    zCookie = sqlite3_mprintf("anon/%s/%s", zNow, blob_buffer(&b));
    blob_reset(&b);
    free(zNow);
    cgi_set_cookie(zCookieName, zCookie, 0, 6*3600);

    redirect_to_g();
  }
  if( zUsername!=0 && zPasswd!=0 && zPasswd[0]!=0 ){


    zSha1Pw = sha1_shared_secret(zPasswd, zUsername);
    uid = db_int(0,
        "SELECT uid FROM user"
        " WHERE login=%Q"

        "   AND login NOT IN ('anonymous','nobody','developer','reader')"
        "   AND (pw=%Q OR pw=%Q)",
        zUsername, zPasswd, zSha1Pw
    );
    if( uid<=0 ){
      sleep(1);
      zErrMsg = 
         @ <p><span class="loginError">
         @ You entered an unknown user or an incorrect password.
         @ </span></p>
      ;

    }else{







      char *zCookie;
      const char *zCookieName = login_cookie_name();
      const char *zExpire = db_get("cookie-expire","8766");
      int expires = atoi(zExpire)*3600;
      const char *zIpAddr = PD("REMOTE_ADDR","nil");

 
      zCookie = db_text(0, "SELECT '%d/' || hex(randomblob(25))", uid);

      cgi_set_cookie(zCookieName, zCookie, 0, expires);

      db_multi_exec(
        "UPDATE user SET cookie=%Q, ipaddr=%Q, "
        "  cexpire=julianday('now')+%d/86400.0 WHERE uid=%d",
        zCookie, zIpAddr, expires, uid
      );
      redirect_to_g();
    }
  }
  style_header("Login/Logout");
  @ %s(zErrMsg)
  @ <form action="login" method="post">
................................................................................
  if( g.zLogin==0 ){
    zAnonPw = db_text(0, "SELECT pw FROM user"
                         " WHERE login='anonymous'"
                         "   AND cap!=''");
  }
  @ <tr>
  @   <td></td>
  @   <td><input type="submit" name="in" value="Login" /></td>

  @ </tr>
  @ </table>

  @ <script type="text/JavaScript">document.getElementById('u').focus()</script>












  if( g.zLogin==0 ){
    @ <p>Enter
  }else{
    @ <p>You are currently logged in as <b>%h(g.zLogin)</b></p>
    @ <p>To change your login to a different user, enter
  }
  @ your user-id and password at the left and press the
  @ "Login" button.  Your user name will be stored in a browser cookie.
  @ You must configure your web browser to accept cookies in order for
  @ the login to take.</p>




  if( zAnonPw ){
    unsigned int uSeed = captcha_seed();
    char const *zDecoded = captcha_decode(uSeed);
    int bAutoCaptcha = db_get_boolean("auto-captcha", 1);
    char *zCaptcha = captcha_render(zDecoded);

    @ <p><input type="hidden" name="cs" value="%u(uSeed)" />
................................................................................
    @ <td><input type="submit" value="Change Password" /></td></tr>
    @ </table>
    @ </form>
  }
  style_footer();
}

























































/*



























** This routine examines the login cookie to see if it exists and
** and is valid.  If the login cookie checks out, it then sets 
** g.zUserUuid appropriately.



**
*/
void login_check_credentials(void){
  int uid = 0;                  /* User id */
  const char *zCookie;          /* Text of the login cookie */
  const char *zRemoteAddr;      /* IP address of the requestor */

  const char *zCap = 0;         /* Capability string */

  /* Only run this check once.  */
  if( g.userUid!=0 ) return;


  /* If the HTTP connection is coming over 127.0.0.1 and if
  ** local login is disabled and if we are using HTTP and not HTTPS, 
  ** then there is no need to check user credentials.
  **


  */
  zRemoteAddr = PD("REMOTE_ADDR","nil");
  if( strcmp(zRemoteAddr, "127.0.0.1")==0

   && db_get_int("localauth",0)==0
   && P("HTTPS")==0
  ){
    uid = db_int(0, "SELECT uid FROM user WHERE cap LIKE '%%s%%'");
    g.zLogin = db_text("?", "SELECT login FROM user WHERE uid=%d", uid);
    zCap = "s";
    g.noPswd = 1;
    strcpy(g.zCsrfToken, "localhost");
  }

  /* Check the login cookie to see if it matches a known valid user.
  */
  if( uid==0 && (zCookie = P(login_cookie_name()))!=0 ){
    if( fossil_isdigit(zCookie[0]) ){
      /* Cookies of the form "uid/randomness".  There must be a
      ** corresponding entry in the user table. */
      uid = db_int(0, 
            "SELECT uid FROM user"
            " WHERE uid=%d"
            "   AND cookie=%Q"
            "   AND ipaddr=%Q"
            "   AND cexpire>julianday('now')",
            atoi(zCookie), zCookie, zRemoteAddr
         );

    }else if( memcmp(zCookie,"anon/",5)==0 ){







      /* Cookies of the form "anon/TIME/HASH".  The TIME must not be
      ** too old and the sha1 hash of TIME+IPADDR+SECRET must match HASH.
      ** SECRET is the "captcha-secret" value in the repository.
      */
      double rTime;
      int i;
      Blob b;
      rTime = atof(&zCookie[5]);
      for(i=5; zCookie[i] && zCookie[i]!='/'; i++){}
      blob_init(&b, &zCookie[5], i-5);
      if( zCookie[i]=='/' ){ i++; }
      blob_append(&b, "/", 1);

      blob_appendf(&b, "%z/%s", ipPrefix(zRemoteAddr),
                   db_get("captcha-secret",""));
      sha1sum_blob(&b, &b);

      uid = db_int(0, 
          "SELECT uid FROM user WHERE login='anonymous'"
          " AND length(cap)>0"
          " AND length(pw)>0"
          " AND %f+0.25>julianday('now')"
          " AND %Q=%Q",
          rTime, &zCookie[i], blob_buffer(&b)

      );

      blob_reset(&b);









    }

    sqlite3_snprintf(sizeof(g.zCsrfToken), g.zCsrfToken, "%.10s", zCookie);
  }

  /* If no user found and the REMOTE_USER environment variable is set,
  ** the accept the value of REMOTE_USER as the user.
  */
  if( uid==0 ){
    const char *zRemoteUser = P("REMOTE_USER");
................................................................................
  if( uid==0 ){
    uid = db_int(0, "SELECT uid FROM user WHERE login='nobody'");
    if( uid==0 ){
      /* If there is no user "nobody", then make one up - with no privileges */
      uid = -1;
      zCap = "";
    }
    strcpy(g.zCsrfToken, "none");
  }

  /* At this point, we know that uid!=0.  Find the privileges associated
  ** with user uid.
  */
  assert( uid!=0 );
  if( zCap==0 ){
................................................................................
    fprintf(stderr, "# login: [%s] with capabilities [%s]\n", g.zLogin, zCap);
  }

  /* Set the global variables recording the userid and login.  The
  ** "nobody" user is a special case in that g.zLogin==0.
  */
  g.userUid = uid;
  if( g.zLogin && strcmp(g.zLogin,"nobody")==0 ){
    g.zLogin = 0;
  }

  /* Set the capabilities */
  login_set_capabilities(zCap);
  login_set_anon_nobody_capabilities();
}






/*
** Add the default privileges of users "nobody" and "anonymous" as appropriate
** for the user g.zLogin.
*/
void login_set_anon_nobody_capabilities(void){
  static int once = 1;
  if( g.zLogin && once ){
    const char *zCap;
    /* All logged-in users inherit privileges from "nobody" */
    zCap = db_text("", "SELECT cap FROM user WHERE login = 'nobody'");
    login_set_capabilities(zCap);
    if( strcmp(g.zLogin, "nobody")!=0 ){
      /* All logged-in users inherit privileges from "anonymous" */
      zCap = db_text("", "SELECT cap FROM user WHERE login = 'anonymous'");
      login_set_capabilities(zCap);
    }
    once = 0;
  }
}









/*
** Set the global capability flags based on a capability string.
*/
void login_set_capabilities(const char *zCap){
  static char *zDev = 0;
  static char *zUser = 0;
  int i;
  for(i=0; zCap[i]; i++){
    switch( zCap[i] ){
      case 's':   g.okSetup = 1;  /* Fall thru into Admin */
      case 'a':   g.okAdmin = g.okRdTkt = g.okWrTkt = g.okZip =
                              g.okRdWiki = g.okWrWiki = g.okNewWiki =
                              g.okApndWiki = g.okHistory = g.okClone = 
................................................................................
      case 'r':   g.okRdTkt = 1;                                break;
      case 'n':   g.okNewTkt = 1;                               break;
      case 'w':   g.okWrTkt = g.okRdTkt = g.okNewTkt = 
                  g.okApndTkt = 1;                              break;
      case 'c':   g.okApndTkt = 1;                              break;
      case 't':   g.okTktFmt = 1;                               break;
      case 'b':   g.okAttach = 1;                               break;


      /* The "u" privileges is a little different.  It recursively 
      ** inherits all privileges of the user named "reader" */
      case 'u': {
        if( zUser==0 ){

          zUser = db_text("", "SELECT cap FROM user WHERE login='reader'");
          login_set_capabilities(zUser);
        }
        break;
      }

      /* The "v" privileges is a little different.  It recursively 
      ** inherits all privileges of the user named "developer" */
      case 'v': {
        if( zDev==0 ){

          zDev = db_text("", "SELECT cap FROM user WHERE login='developer'");
          login_set_capabilities(zDev);
        }
        break;
      }
    }
  }
}

................................................................................
      /* case 'q': */
      case 'r':  rc = g.okRdTkt;     break;
      case 's':  rc = g.okSetup;     break;
      case 't':  rc = g.okTktFmt;    break;
      /* case 'u': READER    */
      /* case 'v': DEVELOPER */
      case 'w':  rc = g.okWrTkt;     break;
      /* case 'x': */
      /* case 'y': */
      case 'z':  rc = g.okZip;       break;
      default:   rc = 0;             break;
    }
  }
  return rc;
}



















































/*
** Call this routine when the credential check fails.  It causes
** a redirect to the "login" page.
*/
void login_needed(void){
  const char *zUrl = PD("REQUEST_URI", "index");
................................................................................
/*
** Before using the results of a form, first call this routine to verify
** that ths Anti-CSRF token is present and is valid.  If the Anti-CSRF token
** is missing or is incorrect, that indicates a cross-site scripting attach
** so emits an error message and abort.
*/
void login_verify_csrf_secret(void){
  const char *zCsrf;            /* The CSRF secret */
  if( g.okCsrf ) return;
  if( (zCsrf = P("csrf"))!=0 && strcmp(zCsrf, g.zCsrfToken)==0 ){
    g.okCsrf = 1;
    return;
  }
  fossil_fatal("Cross-site request forgery attempt");
}

**
*******************************************************************************
**
** This file contains code for generating the login and logout screens.
**
** Notes:
**
** There are four special-case user-ids:  "anonymous", "nobody",
** "developer" and "reader".
**
** The capabilities of the nobody user are available to anyone,
** regardless of whether or not they are logged in.  The capabilities
** of anonymous are only available after logging in, but the login
** screen displays the password for the anonymous login, so this
** should not prevent a human user from doing so.  The capabilities
** of developer and reader are inherited by any user that has the
** "v" and "u" capabilities, respectively.
**
** The nobody user has capabilities that you want spiders to have.
** The anonymous user has capabilities that you want people without
** logins to have.
**
** Of course, a sophisticated spider could easily circumvent the
** anonymous login requirement and walk the website.  But that is
................................................................................
#  if defined(__MINGW32__) || defined(_MSC_VER)
#    define sleep Sleep            /* windows does not have sleep, but Sleep */
#  endif
#endif
#include <time.h>

/*
** Return the login-group name.  Or return 0 if this repository is
** not a member of a login-group.
*/
const char *login_group_name(void){
  static const char *zGroup = 0;
  static int once = 1;
  if( once ){
    zGroup = db_get("login-group-name", 0);
    once = 0;
  }
  return zGroup;
}

/*
** Return a path appropriate for setting a cookie.
**
** The path is g.zTop for single-repo cookies.  It is "/" for
** cookies of a login-group.
*/
static const char *login_cookie_path(void){
  if( login_group_name()==0 ){
    return g.zTop;
  }else{
    return "/";
  }
}

/*
** Return the name of the login cookie.
**
** The login cookie name is always of the form:  fossil-XXXXXXXXXXXXXXXX
** where the Xs are the first 16 characters of the login-group-code or
** of the project-code if we are not a member of any login-group.
*/
static char *login_cookie_name(void){
  static char *zCookieName = 0;
  if( zCookieName==0 ){



    zCookieName = db_text(0,
       "SELECT 'fossil-' || substr(value,1,16)"
       "  FROM config"
       " WHERE name IN ('project-code','login-group-code')"
       " ORDER BY name;"
    );
  }
  return zCookieName;
}

/*
** Redirect to the page specified by the "g" query parameter.
** Or if there is no "g" query parameter, redirect to the homepage.
................................................................................
    cgi_redirect(zGoto);
  }else{
    fossil_redirect_home();
  }
}

/*
** The IP address of the client is stored as part of login cookies.

** But some clients are behind firewalls that shift the IP address 
** with each HTTP request.  To allow such (broken) clients to log in, 
** extract just a prefix of the IP address.  
*/
static char *ipPrefix(const char *zIP){
  int i, j; 
  for(i=j=0; zIP[i]; i++){
    if( zIP[i]=='.' ){
      j++;
      if( j==2 ) break;
    }
  }
  return mprintf("%.*s", i, zIP);
}

/*
** Return an abbreviated project code.  The abbreviation is the first
** 16 characters of the project code.
**
** Memory is obtained from malloc.
*/
static char *abbreviated_project_code(const char *zFullCode){
  return mprintf("%.16s", zFullCode);
}


/*
** Check to see if the anonymous login is valid.  If it is valid, return
** the userid of the anonymous user.
*/
static int isValidAnonymousLogin(
  const char *zUsername,  /* The username.  Must be "anonymous" */
................................................................................

  if( zUsername==0 ) return 0;
  if( zPassword==0 ) return 0;
  if( strcmp(zUsername,"anonymous")!=0 ) return 0;
  zCS = P("cs");   /* The "cs" parameter is the "captcha seed" */
  if( zCS==0 ) return 0;
  zPw = captcha_decode((unsigned int)atoi(zCS));
  if( fossil_stricmp(zPw, zPassword)!=0 ) return 0;
  uid = db_int(0, "SELECT uid FROM user WHERE login='anonymous'"
                  " AND length(pw)>0 AND length(cap)>0");
  return uid;
}

/*
** Make sure the accesslog table exists.  Create it if it does not
*/
void create_accesslog_table(void){
  db_multi_exec(
    "CREATE TABLE IF NOT EXISTS %s.accesslog("
    "  uname TEXT,"
    "  ipaddr TEXT,"
    "  success BOOLEAN,"
    "  mtime TIMESTAMP"
    ");", db_name("repository")
  );
}

/*
** Make a record of a login attempt, if login record keeping is enabled.
*/
static void record_login_attempt(
  const char *zUsername,     /* Name of user logging in */
  const char *zIpAddr,       /* IP address from which they logged in */
  int bSuccess               /* True if the attempt was a success */
){
  if( !db_get_boolean("access-log", 0) ) return;
  create_accesslog_table();
  db_multi_exec(
    "INSERT INTO accesslog(uname,ipaddr,success,mtime)"
    "VALUES(%Q,%Q,%d,julianday('now'));",
    zUsername, zIpAddr, bSuccess
  );
}

/*
** WEBPAGE: login
** WEBPAGE: logout
** WEBPAGE: my
**
** Generate the login page.
................................................................................
  const char *zUsername, *zPasswd;
  const char *zNew1, *zNew2;
  const char *zAnonPw = 0;
  int anonFlag;
  char *zErrMsg = "";
  int uid;                     /* User id loged in user */
  char *zSha1Pw;
  const char *zIpAddr;         /* IP address of requestor */
  char *zRemoteAddr;           /* Abbreviated IP address of requestor */

  login_check_credentials();
  zUsername = P("u");
  zPasswd = P("p");
  anonFlag = P("anon")!=0;
  if( P("out")!=0 ){
    /* To logout, change the cookie value to an empty string */
    const char *zCookieName = login_cookie_name();
    cgi_set_cookie(zCookieName, "", login_cookie_path(), -86400);
    redirect_to_g();
  }
  if( g.okPassword && zPasswd && (zNew1 = P("n1"))!=0 && (zNew2 = P("n2"))!=0 ){
    /* The user requests a password change */
    zSha1Pw = sha1_shared_secret(zPasswd, g.zLogin, 0);
    if( db_int(1, "SELECT 0 FROM user"
                  " WHERE uid=%d AND (pw=%Q OR pw=%Q)", 
                  g.userUid, zPasswd, zSha1Pw) ){
      sleep(1);
      zErrMsg = 
         @ <p><span class="loginError">
         @ You entered an incorrect old password while attempting to change
         @ your password.  Your password is unchanged.
         @ </span></p>
      ;
    }else if( fossil_strcmp(zNew1,zNew2)!=0 ){
      zErrMsg = 
         @ <p><span class="loginError">
         @ The two copies of your new passwords do not match.
         @ Your password is unchanged.
         @ </span></p>
      ;
    }else{
      char *zNewPw = sha1_shared_secret(zNew1, g.zLogin, 0);
      char *zChngPw;
      char *zErr;
      db_multi_exec(
         "UPDATE user SET pw=%Q WHERE uid=%d", zNewPw, g.userUid
      );
      fossil_free(zNewPw);
      zChngPw = mprintf(
         "UPDATE user"
         "   SET pw=shared_secret(%Q,%Q,"
         "        (SELECT value FROM config WHERE name='project-code'))"
         " WHERE login=%Q",
         zNew1, g.zLogin, g.zLogin
      );
      if( login_group_sql(zChngPw, "<p>", "</p>\n", &zErr) ){
        zErrMsg = mprintf("<span class=\"loginError\">%s</span>", zErr);
        fossil_free(zErr);
      }else{
        redirect_to_g();
        return;
      }
    }
  }
  zIpAddr = PD("REMOTE_ADDR","nil");   /* Complete IP address for logging */
  zRemoteAddr = ipPrefix(zIpAddr);     /* Abbreviated IP address */
  uid = isValidAnonymousLogin(zUsername, zPasswd);
  if( uid>0 ){
    /* Successful login as anonymous.  Set a cookie that looks like
    ** this:
    **
    **    HASH/TIME/anonymous
    **
    ** Where HASH is the sha1sum of TIME/IPADDR/SECRET, in which IPADDR
    ** is the abbreviated IP address and SECRET is captcha-secret.
    */
    char *zNow;                  /* Current time (julian day number) */

    char *zCookie;               /* The login cookie */
    const char *zCookieName;     /* Name of the login cookie */
    Blob b;                      /* Blob used during cookie construction */


    zCookieName = login_cookie_name();
    zNow = db_text("0", "SELECT julianday('now')");
    blob_init(&b, zNow, -1);
    blob_appendf(&b, "/%s/%s", zRemoteAddr, db_get("captcha-secret",""));
    sha1sum_blob(&b, &b);
    zCookie = sqlite3_mprintf("%s/%s/anonymous", blob_buffer(&b), zNow);
    blob_reset(&b);
    free(zNow);
    cgi_set_cookie(zCookieName, zCookie, login_cookie_path(), 6*3600);
    record_login_attempt("anonymous", zIpAddr, 1);
    redirect_to_g();
  }
  if( zUsername!=0 && zPasswd!=0 && zPasswd[0]!=0 ){
    /* Attempting to log in as a user other than anonymous.
    */
    zSha1Pw = sha1_shared_secret(zPasswd, zUsername, 0);
    uid = db_int(0,
        "SELECT uid FROM user"
        " WHERE login=%Q"
        "   AND length(cap)>0 AND length(pw)>0"
        "   AND login NOT IN ('anonymous','nobody','developer','reader')"
        "   AND (pw=%Q OR pw=%Q)",
        zUsername, zPasswd, zSha1Pw
    );
    if( uid<=0 ){
      sleep(1);
      zErrMsg = 
         @ <p><span class="loginError">
         @ You entered an unknown user or an incorrect password.
         @ </span></p>
      ;
      record_login_attempt(zUsername, zIpAddr, 0);
    }else{
      /* Non-anonymous login is successful.  Set a cookie of the form:
      **
      **    HASH/PROJECT/LOGIN
      **
      ** where HASH is a random hex number, PROJECT is either project
      ** code prefix, and LOGIN is the user name.
      */
      char *zCookie;
      const char *zCookieName = login_cookie_name();
      const char *zExpire = db_get("cookie-expire","8766");
      int expires = atoi(zExpire)*3600;
      char *zCode = abbreviated_project_code(db_get("project-code",""));
      char *zHash;
  
      zHash = db_text(0, "SELECT hex(randomblob(25))");
      zCookie = mprintf("%s/%s/%s", zHash, zCode, zUsername);
      cgi_set_cookie(zCookieName, zCookie, login_cookie_path(), expires);
      record_login_attempt(zUsername, zIpAddr, 1);
      db_multi_exec(
        "UPDATE user SET cookie=%Q, ipaddr=%Q, "
        "  cexpire=julianday('now')+%d/86400.0 WHERE uid=%d",
        zHash, zRemoteAddr, expires, uid
      );
      redirect_to_g();
    }
  }
  style_header("Login/Logout");
  @ %s(zErrMsg)
  @ <form action="login" method="post">
................................................................................
  if( g.zLogin==0 ){
    zAnonPw = db_text(0, "SELECT pw FROM user"
                         " WHERE login='anonymous'"
                         "   AND cap!=''");
  }
  @ <tr>
  @   <td></td>
  @   <td><input type="submit" name="in" value="Login"
  @        onClick="chngAction(this.form)" /></td>
  @ </tr>
  @ </table>
  @ <script type="text/JavaScript">
  @   document.getElementById('u').focus()
  @   function chngAction(form){
  if( g.sslNotAvailable==0
   && memcmp(g.zBaseURL,"https:",6)!=0
   && db_get_boolean("https-login",0)
  ){
     char *zSSL = mprintf("https:%s", &g.zBaseURL[5]);
     @  if( form.u.value!="anonymous" ){
     @     form.action = "%h(zSSL)/login";
     @  }
  }
  @ }
  @ </script>
  if( g.zLogin==0 ){
    @ <p>Enter
  }else{
    @ <p>You are currently logged in as <b>%h(g.zLogin)</b></p>
    @ <p>To change your login to a different user, enter
  }
  @ your user-id and password at the left and press the
  @ "Login" button.  Your user name will be stored in a browser cookie.
  @ You must configure your web browser to accept cookies in order for
  @ the login to take.</p>
  if( db_get_boolean("self-register", 0) ){
    @ <p>If you do not have an account, you can 
    @ <a href="%s(g.zTop)/register?g=%T(P("G"))">create one</a>.
  }
  if( zAnonPw ){
    unsigned int uSeed = captcha_seed();
    char const *zDecoded = captcha_decode(uSeed);
    int bAutoCaptcha = db_get_boolean("auto-captcha", 1);
    char *zCaptcha = captcha_render(zDecoded);

    @ <p><input type="hidden" name="cs" value="%u(uSeed)" />
................................................................................
    @ <td><input type="submit" value="Change Password" /></td></tr>
    @ </table>
    @ </form>
  }
  style_footer();
}

/*
** Attempt to find login credentials for user zLogin on a peer repository
** with project code zCode.  Transfer those credentials to the local 
** repository.
**
** Return true if a transfer was made and false if not.
*/
static int login_transfer_credentials(
  const char *zLogin,          /* Login we are looking for */
  const char *zCode,           /* Project code of peer repository */
  const char *zHash,           /* HASH from login cookie HASH/CODE/LOGIN */
  const char *zRemoteAddr      /* Request comes from here */
){
  sqlite3 *pOther = 0;         /* The other repository */
  sqlite3_stmt *pStmt;         /* Query against the other repository */
  char *zSQL;                  /* SQL of the query against other repo */
  char *zOtherRepo;            /* Filename of the other repository */
  int rc;                      /* Result code from SQLite library functions */
  int nXfer = 0;               /* Number of credentials transferred */

  zOtherRepo = db_text(0, 
       "SELECT value FROM config WHERE name='peer-repo-%q'",
       zCode
  );
  if( zOtherRepo==0 ) return 0;  /* No such peer repository */

  rc = sqlite3_open(zOtherRepo, &pOther);
  if( rc==SQLITE_OK ){
    zSQL = mprintf(
      "SELECT cexpire FROM user"
      " WHERE cookie=%Q"
      "   AND ipaddr=%Q"
      "   AND login=%Q"
      "   AND length(cap)>0"
      "   AND length(pw)>0"
      "   AND cexpire>julianday('now')",
      zHash, zRemoteAddr, zLogin
    );
    pStmt = 0;
    rc = sqlite3_prepare_v2(pOther, zSQL, -1, &pStmt, 0);
    if( rc==SQLITE_OK && sqlite3_step(pStmt)==SQLITE_ROW ){
      db_multi_exec(
        "UPDATE user SET cookie=%Q, ipaddr=%Q, cexpire=%.17g"
        " WHERE login=%Q",
        zHash, zRemoteAddr,
        sqlite3_column_double(pStmt, 0), zLogin
      );
      nXfer++;
    }
    sqlite3_finalize(pStmt);
  }
  sqlite3_close(pOther);
  fossil_free(zOtherRepo);
  return nXfer;
}

/*
** Lookup the uid for a user with zLogin and zCookie and zRemoteAddr.
** Return 0 if not found.
*/
static int login_find_user(
  const char *zLogin,            /* User name */
  const char *zCookie,           /* Login cookie value */
  const char *zRemoteAddr        /* Abbreviated IP address for valid login */
){
  int uid;
  if( fossil_strcmp(zLogin, "anonymous")==0 ) return 0;
  if( fossil_strcmp(zLogin, "nobody")==0 ) return 0;
  if( fossil_strcmp(zLogin, "developer")==0 ) return 0;
  if( fossil_strcmp(zLogin, "reader")==0 ) return 0;
  uid = db_int(0, 
    "SELECT uid FROM user"
    " WHERE login=%Q"
    "   AND cookie=%Q"
    "   AND ipaddr=%Q"
    "   AND cexpire>julianday('now')"
    "   AND length(cap)>0"
    "   AND length(pw)>0",
    zLogin, zCookie, zRemoteAddr
  );
  return uid;
}

/*
** This routine examines the login cookie to see if it exists and
** and is valid.  If the login cookie checks out, it then sets 

** global variables appropriately.  Global variables set include
** g.userUid and g.zLogin and of the g.okRead family of permission
** booleans.
**
*/
void login_check_credentials(void){
  int uid = 0;                  /* User id */
  const char *zCookie;          /* Text of the login cookie */
  const char *zIpAddr;          /* Raw IP address of the requestor */
  char *zRemoteAddr;            /* Abbreviated IP address of the requestor */
  const char *zCap = 0;         /* Capability string */

  /* Only run this check once.  */
  if( g.userUid!=0 ) return;


  /* If the HTTP connection is coming over 127.0.0.1 and if
  ** local login is disabled and if we are using HTTP and not HTTPS, 
  ** then there is no need to check user credentials.
  **
  ** This feature allows the "fossil ui" command to give the user
  ** full access rights without having to log in.
  */
  zRemoteAddr = ipPrefix(zIpAddr = PD("REMOTE_ADDR","nil"));
  if( strcmp(zIpAddr, "127.0.0.1")==0
   && g.useLocalauth
   && db_get_int("localauth",0)==0
   && P("HTTPS")==0
  ){
    uid = db_int(0, "SELECT uid FROM user WHERE cap LIKE '%%s%%'");
    g.zLogin = db_text("?", "SELECT login FROM user WHERE uid=%d", uid);
    zCap = "sx";
    g.noPswd = 1;
    sqlite3_snprintf(sizeof(g.zCsrfToken), g.zCsrfToken, "localhost");
  }

  /* Check the login cookie to see if it matches a known valid user.
  */
  if( uid==0 && (zCookie = P(login_cookie_name()))!=0 ){
    /* Parse the cookie value up into HASH/ARG/USER */
    char *zHash = fossil_strdup(zCookie);
    char *zArg = 0;
    char *zUser = 0;
    int i, c;
    for(i=0; (c = zHash[i])!=0; i++){
      if( c=='/' ){
        zHash[i++] = 0;
        if( zArg==0 ){
          zArg = &zHash[i];

        }else{
          zUser = &zHash[i];
          break;
        }
      }
    }
    if( zUser==0 ){
      /* Invalid cookie */
    }else if( strcmp(zUser, "anonymous")==0 ){
      /* Cookies of the form "HASH/TIME/anonymous".  The TIME must not be
      ** too old and the sha1 hash of TIME/IPADDR/SECRET must match HASH.
      ** SECRET is the "captcha-secret" value in the repository.
      */
      double rTime = atof(zArg);

      Blob b;





      blob_zero(&b);
      blob_appendf(&b, "%s/%s/%s", 
                   zArg, zRemoteAddr, db_get("captcha-secret",""));
      sha1sum_blob(&b, &b);
      if( fossil_strcmp(zHash, blob_str(&b))==0 ){
        uid = db_int(0, 
            "SELECT uid FROM user WHERE login='anonymous'"
            " AND length(cap)>0"
            " AND length(pw)>0"
            " AND %.17g+0.25>julianday('now')",


            rTime
        );
      }
      blob_reset(&b);
    }else{
      /* Cookies of the form "HASH/CODE/USER".  Search first in the
      ** local user table, then the user table for project CODE if we
      ** are part of a login-group.
      */
      uid = login_find_user(zUser, zHash, zRemoteAddr);
      if( uid==0 && login_transfer_credentials(zUser,zArg,zHash,zRemoteAddr) ){
        uid = login_find_user(zUser, zHash, zRemoteAddr);
        if( uid ) record_login_attempt(zUser, zIpAddr, 1);
      }
    }
    sqlite3_snprintf(sizeof(g.zCsrfToken), g.zCsrfToken, "%.10s", zHash);
  }

  /* If no user found and the REMOTE_USER environment variable is set,
  ** the accept the value of REMOTE_USER as the user.
  */
  if( uid==0 ){
    const char *zRemoteUser = P("REMOTE_USER");
................................................................................
  if( uid==0 ){
    uid = db_int(0, "SELECT uid FROM user WHERE login='nobody'");
    if( uid==0 ){
      /* If there is no user "nobody", then make one up - with no privileges */
      uid = -1;
      zCap = "";
    }
    sqlite3_snprintf(sizeof(g.zCsrfToken), g.zCsrfToken, "none");
  }

  /* At this point, we know that uid!=0.  Find the privileges associated
  ** with user uid.
  */
  assert( uid!=0 );
  if( zCap==0 ){
................................................................................
    fprintf(stderr, "# login: [%s] with capabilities [%s]\n", g.zLogin, zCap);
  }

  /* Set the global variables recording the userid and login.  The
  ** "nobody" user is a special case in that g.zLogin==0.
  */
  g.userUid = uid;
  if( fossil_strcmp(g.zLogin,"nobody")==0 ){
    g.zLogin = 0;
  }

  /* Set the capabilities */
  login_set_capabilities(zCap, 0);
  login_set_anon_nobody_capabilities();
}

/*
** Memory of settings
*/
static int login_anon_once = 1;

/*
** Add the default privileges of users "nobody" and "anonymous" as appropriate
** for the user g.zLogin.
*/
void login_set_anon_nobody_capabilities(void){

  if( g.zLogin && login_anon_once ){
    const char *zCap;
    /* All logged-in users inherit privileges from "nobody" */
    zCap = db_text("", "SELECT cap FROM user WHERE login = 'nobody'");
    login_set_capabilities(zCap, 0);
    if( fossil_strcmp(g.zLogin, "nobody")!=0 ){
      /* All logged-in users inherit privileges from "anonymous" */
      zCap = db_text("", "SELECT cap FROM user WHERE login = 'anonymous'");
      login_set_capabilities(zCap, 0);
    }
    login_anon_once = 0;
  }
}

/*
** Flags passed into the 2nd argument of login_set_capabilities().
*/
#if INTERFACE
#define LOGIN_IGNORE_U   0x01         /* Ignore "u" */
#define LOGIN_IGNORE_V   0x01         /* Ignore "v" */
#endif

/*
** Set the global capability flags based on a capability string.
*/
void login_set_capabilities(const char *zCap, unsigned flags){


  int i;
  for(i=0; zCap[i]; i++){
    switch( zCap[i] ){
      case 's':   g.okSetup = 1;  /* Fall thru into Admin */
      case 'a':   g.okAdmin = g.okRdTkt = g.okWrTkt = g.okZip =
                              g.okRdWiki = g.okWrWiki = g.okNewWiki =
                              g.okApndWiki = g.okHistory = g.okClone = 
................................................................................
      case 'r':   g.okRdTkt = 1;                                break;
      case 'n':   g.okNewTkt = 1;                               break;
      case 'w':   g.okWrTkt = g.okRdTkt = g.okNewTkt = 
                  g.okApndTkt = 1;                              break;
      case 'c':   g.okApndTkt = 1;                              break;
      case 't':   g.okTktFmt = 1;                               break;
      case 'b':   g.okAttach = 1;                               break;
      case 'x':   g.okPrivate = 1;                              break;

      /* The "u" privileges is a little different.  It recursively 
      ** inherits all privileges of the user named "reader" */
      case 'u': {
        if( (flags & LOGIN_IGNORE_U)==0 ){
          const char *zUser;
          zUser = db_text("", "SELECT cap FROM user WHERE login='reader'");
          login_set_capabilities(zUser, flags | LOGIN_IGNORE_U);
        }
        break;
      }

      /* The "v" privileges is a little different.  It recursively 
      ** inherits all privileges of the user named "developer" */
      case 'v': {
        if( (flags & LOGIN_IGNORE_V)==0 ){
          const char *zDev;
          zDev = db_text("", "SELECT cap FROM user WHERE login='developer'");
          login_set_capabilities(zDev, flags | LOGIN_IGNORE_V);
        }
        break;
      }
    }
  }
}

................................................................................
      /* case 'q': */
      case 'r':  rc = g.okRdTkt;     break;
      case 's':  rc = g.okSetup;     break;
      case 't':  rc = g.okTktFmt;    break;
      /* case 'u': READER    */
      /* case 'v': DEVELOPER */
      case 'w':  rc = g.okWrTkt;     break;
      case 'x':  rc = g.okPrivate;   break;
      /* case 'y': */
      case 'z':  rc = g.okZip;       break;
      default:   rc = 0;             break;
    }
  }
  return rc;
}

/*
** Change the login to zUser.
*/
void login_as_user(const char *zUser){
  char *zCap = "";   /* New capabilities */

  /* Turn off all capabilities from prior logins */
  g.okSetup = 0;
  g.okAdmin = 0;
  g.okDelete = 0;
  g.okPassword = 0;
  g.okQuery = 0;
  g.okWrite = 0;
  g.okRead = 0;
  g.okHistory = 0;
  g.okClone = 0;
  g.okRdWiki = 0;
  g.okNewWiki = 0;
  g.okApndWiki = 0;
  g.okWrWiki = 0;
  g.okRdTkt = 0;
  g.okNewTkt = 0;
  g.okApndTkt = 0;
  g.okWrTkt = 0;
  g.okAttach = 0;
  g.okTktFmt = 0;
  g.okRdAddr = 0;
  g.okZip = 0;
  g.okPrivate = 0;

  /* Set the global variables recording the userid and login.  The
  ** "nobody" user is a special case in that g.zLogin==0.
  */
  g.userUid = db_int(0, "SELECT uid FROM user WHERE login=%Q", zUser);
  if( g.userUid==0 ){
    zUser = 0;
    g.userUid = db_int(0, "SELECT uid FROM user WHERE login='nobody'");
  }
  if( g.userUid ){
    zCap = db_text("", "SELECT cap FROM user WHERE uid=%d", g.userUid);
  }
  if( fossil_strcmp(zUser,"nobody")==0 ) zUser = 0;
  g.zLogin = fossil_strdup(zUser);

  /* Set the capabilities */
  login_set_capabilities(zCap, 0);
  login_anon_once = 1;
  login_set_anon_nobody_capabilities();
}

/*
** Call this routine when the credential check fails.  It causes
** a redirect to the "login" page.
*/
void login_needed(void){
  const char *zUrl = PD("REQUEST_URI", "index");
................................................................................
/*
** Before using the results of a form, first call this routine to verify
** that ths Anti-CSRF token is present and is valid.  If the Anti-CSRF token
** is missing or is incorrect, that indicates a cross-site scripting attach
** so emits an error message and abort.
*/
void login_verify_csrf_secret(void){

  if( g.okCsrf ) return;
  if( fossil_strcmp(P("csrf"), g.zCsrfToken)==0 ){
    g.okCsrf = 1;
    return;
  }
  fossil_fatal("Cross-site request forgery attempt");
}

/*
** WEBPAGE: register
**
** Generate the register page.
**
*/
void register_page(void){
  const char *zUsername, *zPasswd, *zConfirm, *zContact, *zCS, *zPw, *zCap;
  unsigned int uSeed;
  char const *zDecoded;
  char *zCaptcha;
  if( !db_get_boolean("self-register", 0) ){
    style_header("Registration not possible");
    @ <p>This project does not allow user self-registration. Please contact the
    @ project administrator to obtain an account.</p>
    style_footer();
    return;
  }

  style_header("Register");
  zUsername = P("u");
  zPasswd = P("p");
  zConfirm = P("cp");
  zContact = P("c");
  zCap = P("cap");
  zCS = P("cs"); /* Captcha Secret */

  /* Try to make any sense from user input. */
  if( P("new") ){
    if( zCS==0 ) fossil_redirect_home();  /* Forged request */
    zPw = captcha_decode((unsigned int)atoi(zCS));
    if( !(zUsername && zPasswd && zConfirm && zContact) ){
      @ <p><span class="loginError">
      @ All fields are obligatory.
      @ </span></p>
    }else if( strlen(zPasswd) < 6){
      @ <p><span class="loginError">
      @ Password too weak.
      @ </span></p>
    }else if( strcmp(zPasswd,zConfirm)!=0 ){
      @ <p><span class="loginError">
      @ The two copies of your new passwords do not match.
      @ </span></p>
    }else if( fossil_stricmp(zPw, zCap)!=0 ){
      @ <p><span class="loginError">
      @ Captcha text invalid.
      @ </span></p>
    }else{
      /* This almost is stupid copy-paste of code from user.c:user_cmd(). */
      Blob passwd, login, caps, contact;

      blob_init(&login, zUsername, -1);
      blob_init(&contact, zContact, -1);
      blob_init(&caps, db_get("default-perms", "u"), -1);
      blob_init(&passwd, zPasswd, -1);

      if( db_exists("SELECT 1 FROM user WHERE login=%B", &login) ){
        /* Here lies the reason I don't use zErrMsg - it would not substitute
         * this %s(zUsername), or at least I don't know how to force it to.*/
        @ <p><span class="loginError">
        @ %s(zUsername) already exists.
        @ </span></p>
      }else{
        char *zPw = sha1_shared_secret(blob_str(&passwd), blob_str(&login), 0);
        int uid;
        char *zCookie;
        const char *zCookieName;
        const char *zExpire;
        int expires;
        const char *zIpAddr;
        db_multi_exec(
            "INSERT INTO user(login,pw,cap,info)"
            "VALUES(%B,%Q,%B,%B)",
            &login, zPw, &caps, &contact
            );
        free(zPw);

        /* The user is registered, now just log him in. */
        uid = db_int(0, "SELECT uid FROM user WHERE login=%Q", zUsername);
        zCookieName = login_cookie_name();
        zExpire = db_get("cookie-expire","8766");
        expires = atoi(zExpire)*3600;
        zIpAddr = PD("REMOTE_ADDR","nil");

        zCookie = db_text(0, "SELECT '%d/' || hex(randomblob(25))", uid);
        cgi_set_cookie(zCookieName, zCookie, login_cookie_path(), expires);
        record_login_attempt(zUsername, zIpAddr, 1);
        db_multi_exec(
            "UPDATE user SET cookie=%Q, ipaddr=%Q, "
            "  cexpire=julianday('now')+%d/86400.0 WHERE uid=%d",
            zCookie, ipPrefix(zIpAddr), expires, uid
        );
        redirect_to_g();

      }
    }
  }

  /* Prepare the captcha. */
  uSeed = captcha_seed();
  zDecoded = captcha_decode(uSeed);
  zCaptcha = captcha_render(zDecoded);

  /* Print out the registration form. */
  @ <form action="register" method="post">
  if( P("g") ){
    @ <input type="hidden" name="g" value="%h(P("g"))" />
  }
  @ <p><input type="hidden" name="cs" value="%u(uSeed)" />
  @ <table class="login_out">
  @ <tr>
  @   <td class="login_out_label" align="right">User ID:</td>
  @   <td><input type="text" id="u" name="u" value="" size="30" /></td>
  @ </tr>
  @ <tr>
  @   <td class="login_out_label" align="right">Password:</td>
  @   <td><input type="password" id="p" name="p" value="" size="30" /></td>
  @ </tr>
  @ <tr>
  @   <td class="login_out_label" align="right">Confirm password:</td>
  @   <td><input type="password" id="cp" name="cp" value="" size="30" /></td>
  @ </tr>
  @ <tr>
  @   <td class="login_out_label" align="right">Contact info:</td>
  @   <td><input type="text" id="c" name="c" value="" size="30" /></td>
  @ </tr>
  @ <tr>
  @   <td class="login_out_label" align="right">Captcha text (below):</td>
  @   <td><input type="text" id="cap" name="cap" value="" size="30" /></td>
  @ </tr>
  @ <tr><td></td>
  @ <td><input type="submit" name="new" value="Register" /></td></tr>
  @ </table>
  @ <div class="captcha"><table class="captcha"><tr><td><pre>
  @ %s(zCaptcha)
  @ </pre></td></tr></table>
  @ </form>
  style_footer();

  free(zCaptcha);
}

/*
** Run SQL on the repository database for every repository in our
** login group.  The SQL is run in a separate database connection.
**
** Any members of the login group whose repository database file
** cannot be found is silently removed from the group.
**
** Error messages accumulate and are returned in *pzErrorMsg.  The
** memory used to hold these messages should be freed using
** fossil_free() if one desired to avoid a memory leak.  The
** zPrefix and zSuffix strings surround each error message.
**
** Return the number of errors.
*/
int login_group_sql(
  const char *zSql,        /* The SQL to run */
  const char *zPrefix,     /* Prefix to each error message */
  const char *zSuffix,     /* Suffix to each error message */
  char **pzErrorMsg        /* Write error message here, if not NULL */
){
  sqlite3 *pPeer;          /* Connection to another database */
  int nErr = 0;            /* Number of errors seen so far */
  int rc;                  /* Result code from subroutine calls */
  char *zErr;              /* SQLite error text */
  char *zSelfCode;         /* Project code for ourself */
  Blob err;                /* Accumulate errors here */
  Stmt q;                  /* Query of all peer-* entries in CONFIG */

  if( zPrefix==0 ) zPrefix = "";
  if( zSuffix==0 ) zSuffix = "";
  if( pzErrorMsg ) *pzErrorMsg = 0;
  zSelfCode = abbreviated_project_code(db_get("project-code", "x"));
  blob_zero(&err);
  db_prepare(&q, 
    "SELECT name, value FROM config"
    " WHERE name GLOB 'peer-repo-*'"
    "   AND name <> 'peer-repo-%q'"
    " ORDER BY +value",
    zSelfCode
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zRepoName = db_column_text(&q, 1);
    if( file_size(zRepoName)<0 ){
      /* Silently remove non-existant repositories from the login group. */
      const char *zLabel = db_column_text(&q, 0);
      db_multi_exec(
         "DELETE FROM config WHERE name GLOB 'peer-*-%q'",
         &zLabel[10]
      );
      continue;
    }
    rc = sqlite3_open_v2(zRepoName, &pPeer, SQLITE_OPEN_READWRITE, 0);
    if( rc!=SQLITE_OK ){
      blob_appendf(&err, "%s%s: %s%s", zPrefix, zRepoName,
                   sqlite3_errmsg(pPeer), zSuffix);
      nErr++;
      sqlite3_close(pPeer);
      continue;
    }
    sqlite3_create_function(pPeer, "shared_secret", 3, SQLITE_UTF8,
                            0, sha1_shared_secret_sql_function, 0, 0);
    zErr = 0;
    rc = sqlite3_exec(pPeer, zSql, 0, 0, &zErr);
    if( zErr ){
      blob_appendf(&err, "%s%s: %s%s", zPrefix, zRepoName, zErr, zSuffix);
      sqlite3_free(zErr);
      nErr++;
    }else if( rc!=SQLITE_OK ){
      blob_appendf(&err, "%s%s: %s%s", zPrefix, zRepoName,
                   sqlite3_errmsg(pPeer), zSuffix);
      nErr++;
    }
    sqlite3_close(pPeer);
  }
  db_finalize(&q);
  if( pzErrorMsg && blob_size(&err)>0 ){
    *pzErrorMsg = fossil_strdup(blob_str(&err));
  }
  blob_reset(&err);
  fossil_free(zSelfCode);
  return nErr;
}

/*
** Attempt to join a login-group.
**
** If problems arise, leave an error message in *pzErrMsg.
*/
void login_group_join(
  const char *zRepo,         /* Repository file in the login group */
  const char *zLogin,        /* Login name for the other repo */
  const char *zPassword,     /* Password to prove we are authorized to join */
  const char *zNewName,      /* Name of new login group if making a new one */
  char **pzErrMsg            /* Leave an error message here */
){
  Blob fullName;             /* Blob for finding full pathnames */
  sqlite3 *pOther;           /* The other repository */
  int rc;                    /* Return code from sqlite3 functions */
  char *zOtherProjCode;      /* Project code for pOther */
  char *zPwHash;             /* Password hash on pOther */
  char *zSelfRepo;           /* Name of our repository */
  char *zSelfLabel;          /* Project-name for our repository */
  char *zSelfProjCode;       /* Our project-code */
  char *zSql;                /* SQL to run on all peers */
  const char *zSelf;         /* The ATTACH name of our repository */

  *pzErrMsg = 0;   /* Default to no errors */
  zSelf = db_name("repository");

  /* Get the full pathname of the other repository */  
  file_canonical_name(zRepo, &fullName);
  zRepo = mprintf(blob_str(&fullName));
  blob_reset(&fullName);

  /* Get the full pathname for our repository.  Also the project code
  ** and project name for ourself. */
  file_canonical_name(g.zRepositoryName, &fullName);
  zSelfRepo = mprintf(blob_str(&fullName));
  blob_reset(&fullName);
  zSelfProjCode = db_get("project-code", "unknown");
  zSelfLabel = db_get("project-name", 0);
  if( zSelfLabel==0 ){
    zSelfLabel = zSelfProjCode;
  }

  /* Make sure we are not trying to join ourselves */
  if( strcmp(zRepo, zSelfRepo)==0 ){
    *pzErrMsg = mprintf("The \"other\" repository is the same as this one.");
    return;
  }

  /* Make sure the other repository is a valid Fossil database */
  if( file_size(zRepo)<0 ){
    *pzErrMsg = mprintf("repository file \"%s\" does not exist", zRepo);
    return;
  }
  rc = sqlite3_open(zRepo, &pOther);
  if( rc!=SQLITE_OK ){
    *pzErrMsg = mprintf(sqlite3_errmsg(pOther));
  }else{
    rc = sqlite3_exec(pOther, "SELECT count(*) FROM user", 0, 0, pzErrMsg);
  }
  sqlite3_close(pOther);
  if( rc ) return;

  /* Attach the other respository.  Make sure the username/password is
  ** valid and has Setup permission.
  */
  db_multi_exec("ATTACH %Q AS other", zRepo);
  zOtherProjCode = db_text("x", "SELECT value FROM other.config"
                                " WHERE name='project-code'");
  zPwHash = sha1_shared_secret(zPassword, zLogin, zOtherProjCode);
  if( !db_exists(
    "SELECT 1 FROM other.user"
    " WHERE login=%Q AND cap GLOB '*s*'"
    "   AND (pw=%Q OR pw=%Q)",
    zLogin, zPassword, zPwHash)
  ){
    db_multi_exec("DETACH other");
    *pzErrMsg = "The supplied username/password does not correspond to a"
                " user Setup permission on the other repository.";
    return;
  }

  /* Create all the necessary CONFIG table entries on both the
  ** other repository and on our own repository.
  */
  zSelfProjCode = abbreviated_project_code(zSelfProjCode);
  zOtherProjCode = abbreviated_project_code(zOtherProjCode);
  db_begin_transaction();
  db_multi_exec(
    "DELETE FROM %s.config WHERE name GLOB 'peer-*';"
    "INSERT INTO %s.config(name,value) VALUES('peer-repo-%s',%Q);"
    "INSERT INTO %s.config(name,value) "
    "  SELECT 'peer-name-%q', value FROM other.config"
    "   WHERE name='project-name';",
    zSelf,
    zSelf, zOtherProjCode, zRepo,
    zSelf, zOtherProjCode
  );
  db_multi_exec(
    "INSERT OR IGNORE INTO other.config(name,value)"
    " VALUES('login-group-name',%Q);"
    "INSERT OR IGNORE INTO other.config(name,value)"
    " VALUES('login-group-code',lower(hex(randomblob(8))));",
    zNewName
  );
  db_multi_exec(
    "REPLACE INTO %s.config(name,value)"
    "  SELECT name, value FROM other.config"
    "   WHERE name GLOB 'peer-*' OR name GLOB 'login-group-*'",
    zSelf
  );
  db_end_transaction(0);
  db_multi_exec("DETACH other");

  /* Propagate the changes to all other members of the login-group */
  zSql = mprintf(
    "BEGIN;"
    "REPLACE INTO config(name,value,mtime) VALUES('peer-name-%q',%Q,now());"
    "REPLACE INTO config(name,value,mtime) VALUES('peer-repo-%q',%Q,now());"
    "COMMIT;",
    zSelfProjCode, zSelfLabel, zSelfProjCode, zSelfRepo
  );
  login_group_sql(zSql, "<li> ", "</li>", pzErrMsg);
  fossil_free(zSql);
}

/*
** Leave the login group that we are currently part of.
*/
void login_group_leave(char **pzErrMsg){
  char *zProjCode;
  char *zSql;

  *pzErrMsg = 0;
  zProjCode = abbreviated_project_code(db_get("project-code","x"));
  zSql = mprintf(
    "DELETE FROM config WHERE name GLOB 'peer-*-%q';"
    "DELETE FROM config"
    " WHERE name='login-group-name'"
    "   AND (SELECT count(*) FROM config WHERE name GLOB 'peer-*')==0;",
    zProjCode
  );
  fossil_free(zProjCode);
  login_group_sql(zSql, "<li> ", "</li>", pzErrMsg);
  fossil_free(zSql);
  db_multi_exec(
    "DELETE FROM config "
    " WHERE name GLOB 'peer-*'"
    "    OR name GLOB 'login-group-*';"
  );
}