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| /*
** Copyright (c) 2007 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 merge the changes in the current
** checkout into a different version and switch to that version.
*/
#include "config.h"
#include "update.h"
#include <assert.h>
/*
** Return true if artifact rid is a version
*/
int is_a_version(int rid){
return db_exists("SELECT 1 FROM event WHERE objid=%d AND type='ci'", rid);
}
/* This variable is set if we are doing an internal update. It is clear
** when running the "update" command.
*/
static int internalUpdate = 0;
static int internalConflictCnt = 0;
/*
** Do an update to version vid.
**
** Start an undo session but do not terminate it. Do not autosync.
*/
int update_to(int vid){
int savedArgc;
char **savedArgv;
char *newArgv[3];
newArgv[0] = g.argv[0];
newArgv[1] = "update";
newArgv[2] = 0;
savedArgv = g.argv;
savedArgc = g.argc;
g.argc = 2;
g.argv = newArgv;
internalUpdate = vid;
internalConflictCnt = 0;
update_cmd();
g.argc = savedArgc;
g.argv = savedArgv;
return internalConflictCnt;
}
/*
** COMMAND: update
**
** Usage: %fossil update ?OPTIONS? ?VERSION? ?FILES...?
**
** Change the version of the current checkout to VERSION. Any
** uncommitted changes are retained and applied to the new checkout.
**
** The VERSION argument can be a specific version or tag or branch
** name. If the VERSION argument is omitted, then the leaf of the
** subtree that begins at the current version is used, if there is
** only a single leaf. VERSION can also be "current" to select the
** leaf of the current version or "latest" to select the most recent
** check-in.
**
** If one or more FILES are listed after the VERSION then only the
** named files are candidates to be updated, and any updates to them
** will be treated as edits to the current version. Using a directory
** name for one of the FILES arguments is the same as using every
** subdirectory and file beneath that directory.
**
** If FILES is omitted, all files in the current checkout are subject
** to being updated and the version of the current checkout is changed
** to VERSION. Any uncommitted changes are retained and applied to the
** new checkout.
**
** The -n or --dry-run option causes this command to do a "dry run".
** It prints out what would have happened but does not actually make
** any changes to the current checkout or the repository.
**
** The -v or --verbose option prints status information about
** unchanged files in addition to those file that actually do change.
**
** Options:
** --case-sensitive <BOOL> override case-sensitive setting
** --debug print debug information on stdout
** --latest acceptable in place of VERSION, update to latest version
** --force-missing force update if missing content after sync
** -n|--dry-run If given, display instead of run actions
** -v|--verbose print status information about all files
** -W|--width <num> Width of lines (default is to auto-detect). Must be >20
** or 0 (= no limit, resulting in a single line per entry).
** --setmtime Set timestamps of all files to match their SCM-side
** times (the timestamp of the last checkin which modified
** them).
**
** -K|--keep-merge-files On merge conflict, retain the temporary files
** used for merging, named *-baseline, *-original,
** and *-merge.
**
** See also: revert
*/
void update_cmd(void){
int vid; /* Current version */
int tid=0; /* Target version - version we are changing to */
Stmt q;
int latestFlag; /* --latest. Pick the latest version if true */
int dryRunFlag; /* -n or --dry-run. Do a dry run */
int verboseFlag; /* -v or --verbose. Output extra information */
int forceMissingFlag; /* --force-missing. Continue if missing content */
int debugFlag; /* --debug option */
int setmtimeFlag; /* --setmtime. Set mtimes on files */
int keepMergeFlag; /* True if --keep-merge-files is present */
int nChng; /* Number of file renames */
int *aChng; /* Array of file renames */
int i; /* Loop counter */
int nConflict = 0; /* Number of merge conflicts */
int nOverwrite = 0; /* Number of unmanaged files overwritten */
int nUpdate = 0; /* Number of changes of any kind */
int width; /* Width of printed comment lines */
Stmt mtimeXfer; /* Statement to transfer mtimes */
const char *zWidth; /* Width option string value */
if( !internalUpdate ){
undo_capture_command_line();
url_proxy_options();
}
zWidth = find_option("width","W",1);
if( zWidth ){
width = atoi(zWidth);
if( (width!=0) && (width<=20) ){
fossil_fatal("-W|--width value must be >20 or 0");
}
}else{
width = -1;
}
latestFlag = find_option("latest",0, 0)!=0;
dryRunFlag = find_option("dry-run","n",0)!=0;
if( !dryRunFlag ){
dryRunFlag = find_option("nochange",0,0)!=0; /* deprecated */
}
verboseFlag = find_option("verbose","v",0)!=0;
forceMissingFlag = find_option("force-missing",0,0)!=0;
debugFlag = find_option("debug",0,0)!=0;
setmtimeFlag = find_option("setmtime",0,0)!=0;
keepMergeFlag = find_option("keep-merge-files", "K",0)!=0;
/* We should be done with options.. */
verify_all_options();
db_must_be_within_tree();
vid = db_lget_int("checkout", 0);
user_select();
if( !dryRunFlag && !internalUpdate ){
if( autosync_loop(SYNC_PULL + SYNC_VERBOSE*verboseFlag,
db_get_int("autosync-tries", 1), 1) ){
fossil_fatal("update abandoned due to sync failure");
}
}
/* Create any empty directories now, as well as after the update,
** so changes in settings are reflected now */
if( !dryRunFlag ) ensure_empty_dirs_created(0);
if( internalUpdate ){
tid = internalUpdate;
}else if( g.argc>=3 ){
if( fossil_strcmp(g.argv[2], "current")==0 ){
/* If VERSION is "current", then use the same algorithm to find the
** target as if VERSION were omitted. */
}else if( fossil_strcmp(g.argv[2], "latest")==0 ){
/* If VERSION is "latest", then use the same algorithm to find the
** target as if VERSION were omitted and the --latest flag is present.
*/
latestFlag = 1;
}else{
tid = name_to_typed_rid(g.argv[2],"ci");
if( tid==0 || !is_a_version(tid) ){
fossil_fatal("no such check-in: %s", g.argv[2]);
}
}
}
/* If no VERSION is specified on the command-line, then look for a
** descendent of the current version. If there are multiple descendants,
** look for one from the same branch as the current version. If there
** are still multiple descendants, show them all and refuse to update
** until the user selects one.
*/
if( tid==0 ){
int closeCode = 1;
compute_leaves(vid, closeCode);
if( !db_exists("SELECT 1 FROM leaves") ){
closeCode = 0;
compute_leaves(vid, closeCode);
}
if( !latestFlag && db_int(0, "SELECT count(*) FROM leaves")>1 ){
db_multi_exec(
"DELETE FROM leaves WHERE rid NOT IN"
" (SELECT leaves.rid FROM leaves, tagxref"
" WHERE leaves.rid=tagxref.rid AND tagxref.tagid=%d"
" AND tagxref.value==(SELECT value FROM tagxref"
" WHERE tagid=%d AND rid=%d))",
TAG_BRANCH, TAG_BRANCH, vid
);
if( db_int(0, "SELECT count(*) FROM leaves")>1 ){
compute_leaves(vid, closeCode);
db_prepare(&q,
"%s "
" AND event.objid IN leaves"
" ORDER BY event.mtime DESC",
timeline_query_for_tty()
);
print_timeline(&q, -100, width, 0);
db_finalize(&q);
fossil_fatal("Multiple descendants");
}
}
tid = db_int(0, "SELECT rid FROM leaves, event"
" WHERE event.objid=leaves.rid"
" ORDER BY event.mtime DESC");
if( tid==0 ) tid = vid;
}
if( tid==0 ){
return;
}
db_begin_transaction();
db_multi_exec(
"CREATE TEMP TABLE dir_to_delete(name TEXT %s PRIMARY KEY)WITHOUT ROWID",
filename_collation()
);
vfile_check_signature(vid, CKSIG_ENOTFILE);
if( !dryRunFlag && !internalUpdate ) undo_begin();
if( load_vfile_from_rid(tid) && !forceMissingFlag ){
fossil_fatal("missing content, unable to update");
};
/*
** The record.fn field is used to match files against each other. The
** FV table contains one row for each each unique filename in
** in the current checkout, the pivot, and the version being merged.
*/
db_multi_exec(
"DROP TABLE IF EXISTS fv;"
"CREATE TEMP TABLE fv("
" fn TEXT %s PRIMARY KEY," /* The filename relative to root */
" idv INTEGER," /* VFILE entry for current version */
" idt INTEGER," /* VFILE entry for target version */
" chnged BOOLEAN," /* True if current version has been edited */
" islinkv BOOLEAN," /* True if current file is a link */
" islinkt BOOLEAN," /* True if target file is a link */
" ridv INTEGER," /* Record ID for current version */
" ridt INTEGER," /* Record ID for target */
" isexe BOOLEAN," /* Does target have execute permission? */
" deleted BOOLEAN DEFAULT 0,"/* File marked by "rm" to become unmanaged */
" fnt TEXT %s" /* Filename of same file on target version */
");",
filename_collation(), filename_collation()
);
/* Add files found in the current version
*/
db_multi_exec(
"INSERT OR IGNORE INTO fv(fn,fnt,idv,idt,ridv,ridt,isexe,chnged,deleted)"
" SELECT pathname, pathname, id, 0, rid, 0, isexe, chnged, deleted"
" FROM vfile WHERE vid=%d",
vid
);
/* Compute file name changes on V->T. Record name changes in files that
** have changed locally.
*/
if( vid ){
find_filename_changes(vid, tid, 1, &nChng, &aChng, debugFlag ? "V->T": 0);
if( nChng ){
for(i=0; i<nChng; i++){
db_multi_exec(
"UPDATE fv"
" SET fnt=(SELECT name FROM filename WHERE fnid=%d)"
" WHERE fn=(SELECT name FROM filename WHERE fnid=%d) AND chnged",
aChng[i*2+1], aChng[i*2]
);
}
fossil_free(aChng);
}
}
/* Add files found in the target version T but missing from the current
** version V.
*/
db_multi_exec(
"INSERT OR IGNORE INTO fv(fn,fnt,idv,idt,ridv,ridt,isexe,chnged)"
" SELECT pathname, pathname, 0, 0, 0, 0, isexe, 0 FROM vfile"
" WHERE vid=%d"
" AND pathname %s NOT IN (SELECT fnt FROM fv)",
tid, filename_collation()
);
/*
** Compute the file version ids for T
*/
db_multi_exec(
"UPDATE fv SET"
" idt=coalesce((SELECT id FROM vfile WHERE vid=%d AND fnt=pathname),0),"
" ridt=coalesce((SELECT rid FROM vfile WHERE vid=%d AND fnt=pathname),0)",
tid, tid
);
/*
** Add islink information
*/
db_multi_exec(
"UPDATE fv SET"
" islinkv=coalesce((SELECT islink FROM vfile"
" WHERE vid=%d AND fnt=pathname),0),"
" islinkt=coalesce((SELECT islink FROM vfile"
" WHERE vid=%d AND fnt=pathname),0)",
vid, tid
);
if( debugFlag ){
db_prepare(&q,
"SELECT rowid, fn, fnt, chnged, ridv, ridt, isexe,"
" islinkv, islinkt FROM fv"
);
while( db_step(&q)==SQLITE_ROW ){
fossil_print("%3d: ridv=%-4d ridt=%-4d chnged=%d isexe=%d"
" islinkv=%d islinkt=%d\n",
db_column_int(&q, 0),
db_column_int(&q, 4),
db_column_int(&q, 5),
db_column_int(&q, 3),
db_column_int(&q, 6),
db_column_int(&q, 7),
db_column_int(&q, 8));
fossil_print(" fnv = [%s]\n", db_column_text(&q, 1));
fossil_print(" fnt = [%s]\n", db_column_text(&q, 2));
}
db_finalize(&q);
}
/* If FILES appear on the command-line, remove from the "fv" table
** every entry that is not named on the command-line or which is not
** in a directory named on the command-line.
*/
if( g.argc>=4 ){
Blob sql; /* SQL statement to purge unwanted entries */
Blob treename; /* Normalized filename */
int i; /* Loop counter */
const char *zSep; /* Term separator */
blob_zero(&sql);
blob_append(&sql, "DELETE FROM fv WHERE ", -1);
zSep = "";
for(i=3; i<g.argc; i++){
file_tree_name(g.argv[i], &treename, 0, 1);
if( file_isdir(g.argv[i], RepoFILE)==1 ){
if( blob_size(&treename) != 1 || blob_str(&treename)[0] != '.' ){
blob_append_sql(&sql, "%sfn NOT GLOB '%q/*' ",
zSep /*safe-for-%s*/, blob_str(&treename));
}else{
blob_reset(&sql);
break;
}
}else{
blob_append_sql(&sql, "%sfn<>%Q ",
zSep /*safe-for-%s*/, blob_str(&treename));
}
zSep = "AND ";
blob_reset(&treename);
}
db_multi_exec("%s", blob_sql_text(&sql));
blob_reset(&sql);
}
/*
** Alter the content of the checkout so that it conforms with the
** target
*/
db_prepare(&q,
"SELECT fn, idv, ridv, idt, ridt, chnged, fnt,"
" isexe, islinkv, islinkt, deleted FROM fv ORDER BY 1"
);
db_prepare(&mtimeXfer,
"UPDATE vfile SET mtime=(SELECT mtime FROM vfile WHERE id=:idv)"
" WHERE id=:idt"
);
assert( g.zLocalRoot!=0 );
assert( strlen(g.zLocalRoot)>0 );
assert( g.zLocalRoot[strlen(g.zLocalRoot)-1]=='/' );
while( db_step(&q)==SQLITE_ROW ){
const char *zName = db_column_text(&q, 0); /* The filename from root */
int idv = db_column_int(&q, 1); /* VFILE entry for current */
int ridv = db_column_int(&q, 2); /* RecordID for current */
int idt = db_column_int(&q, 3); /* VFILE entry for target */
int ridt = db_column_int(&q, 4); /* RecordID for target */
int chnged = db_column_int(&q, 5); /* Current is edited */
const char *zNewName = db_column_text(&q,6);/* New filename */
int isexe = db_column_int(&q, 7); /* EXE perm for new file */
int islinkv = db_column_int(&q, 8); /* Is current file is a link */
int islinkt = db_column_int(&q, 9); /* Is target file is a link */
int deleted = db_column_int(&q, 10); /* Marked for deletion */
char *zFullPath; /* Full pathname of the file */
char *zFullNewPath; /* Full pathname of dest */
char nameChng; /* True if the name changed */
zFullPath = mprintf("%s%s", g.zLocalRoot, zName);
zFullNewPath = mprintf("%s%s", g.zLocalRoot, zNewName);
nameChng = fossil_strcmp(zName, zNewName);
nUpdate++;
if( deleted ){
db_multi_exec("UPDATE vfile SET deleted=1 WHERE id=%d", idt);
}
if( idv>0 && ridv==0 && idt>0 && ridt>0 ){
/* Conflict. This file has been added to the current checkout
** but also exists in the target checkout. Use the current version.
*/
fossil_print("CONFLICT %s\n", zName);
nConflict++;
}else if( idt>0 && idv==0 ){
/* File added in the target. */
if( file_isfile_or_link(zFullPath) ){
fossil_print("ADD %s - overwrites an unmanaged file\n", zName);
nOverwrite++;
}else{
fossil_print("ADD %s\n", zName);
}
if( !dryRunFlag && !internalUpdate ) undo_save(zName);
if( !dryRunFlag ) vfile_to_disk(0, idt, 0, 0);
}else if( idt>0 && idv>0 && ridt!=ridv && (chnged==0 || deleted) ){
/* The file is unedited. Change it to the target version */
if( deleted ){
fossil_print("UPDATE %s - change to unmanaged file\n", zName);
}else{
fossil_print("UPDATE %s\n", zName);
}
if( !dryRunFlag && !internalUpdate ) undo_save(zName);
if( !dryRunFlag ) vfile_to_disk(0, idt, 0, 0);
}else if( idt>0 && idv>0 && !deleted && file_size(zFullPath, RepoFILE)<0 ){
/* The file missing from the local check-out. Restore it to the
** version that appears in the target. */
fossil_print("UPDATE %s\n", zName);
if( !dryRunFlag && !internalUpdate ) undo_save(zName);
if( !dryRunFlag ) vfile_to_disk(0, idt, 0, 0);
}else if( idt==0 && idv>0 ){
if( ridv==0 ){
/* Added in current checkout. Continue to hold the file as
** as an addition */
db_multi_exec("UPDATE vfile SET vid=%d WHERE id=%d", tid, idv);
}else if( chnged ){
/* Edited locally but deleted from the target. Do not track the
** file but keep the edited version around. */
fossil_print("CONFLICT %s - edited locally but deleted by update\n",
zName);
nConflict++;
}else{
fossil_print("REMOVE %s\n", zName);
if( !dryRunFlag && !internalUpdate ) undo_save(zName);
if( !dryRunFlag ){
char *zDir;
file_delete(zFullPath);
zDir = file_dirname(zName);
while( zDir!=0 ){
char *zNext;
db_multi_exec("INSERT OR IGNORE INTO dir_to_delete(name)"
"VALUES(%Q)", zDir);
zNext = db_changes() ? file_dirname(zDir) : 0;
fossil_free(zDir);
zDir = zNext;
}
}
}
}else if( idt>0 && idv>0 && ridt!=ridv && chnged ){
/* Merge the changes in the current tree into the target version */
Blob r, t, v;
int rc;
if( nameChng ){
fossil_print("MERGE %s -> %s\n", zName, zNewName);
}else{
fossil_print("MERGE %s\n", zName);
}
if( islinkv || islinkt ){
fossil_print("***** Cannot merge symlink %s\n", zNewName);
nConflict++;
}else{
unsigned mergeFlags = dryRunFlag ? MERGE_DRYRUN : 0;
if(keepMergeFlag!=0) mergeFlags |= MERGE_KEEP_FILES;
if( !dryRunFlag && !internalUpdate ) undo_save(zName);
content_get(ridt, &t);
content_get(ridv, &v);
rc = merge_3way(&v, zFullPath, &t, &r, mergeFlags);
if( rc>=0 ){
if( !dryRunFlag ){
blob_write_to_file(&r, zFullNewPath);
file_setexe(zFullNewPath, isexe);
}
if( rc>0 ){
fossil_print("***** %d merge conflicts in %s\n", rc, zNewName);
nConflict++;
}
}else{
if( !dryRunFlag ){
blob_write_to_file(&t, zFullNewPath);
file_setexe(zFullNewPath, isexe);
}
fossil_print("***** Cannot merge binary file %s\n", zNewName);
nConflict++;
}
}
if( nameChng && !dryRunFlag ) file_delete(zFullPath);
blob_reset(&v);
blob_reset(&t);
blob_reset(&r);
}else{
nUpdate--;
if( chnged ){
if( verboseFlag ) fossil_print("EDITED %s\n", zName);
}else{
db_bind_int(&mtimeXfer, ":idv", idv);
db_bind_int(&mtimeXfer, ":idt", idt);
db_step(&mtimeXfer);
db_reset(&mtimeXfer);
if( verboseFlag ) fossil_print("UNCHANGED %s\n", zName);
}
}
free(zFullPath);
free(zFullNewPath);
}
db_finalize(&q);
db_finalize(&mtimeXfer);
fossil_print("%.79c\n",'-');
if( nUpdate==0 ){
show_common_info(tid, "checkout:", 1, 0);
fossil_print("%-13s None. Already up-to-date\n", "changes:");
}else{
show_common_info(tid, "updated-to:", 1, 0);
fossil_print("%-13s %d file%s modified.\n", "changes:",
nUpdate, nUpdate>1 ? "s" : "");
}
/* Report on conflicts
*/
if( !dryRunFlag ){
Stmt q;
int nMerge = 0;
db_prepare(&q, "SELECT mhash, id FROM vmerge WHERE id<=0");
while( db_step(&q)==SQLITE_ROW ){
const char *zLabel = "merge";
switch( db_column_int(&q, 1) ){
case -1: zLabel = "cherrypick merge"; break;
case -2: zLabel = "backout merge"; break;
}
fossil_warning("uncommitted %s against %S.",
zLabel, db_column_text(&q, 0));
nMerge++;
}
db_finalize(&q);
leaf_ambiguity_warning(tid, tid);
if( nConflict ){
if( internalUpdate ){
internalConflictCnt = nConflict;
nConflict = 0;
}else{
fossil_warning("WARNING: %d merge conflicts", nConflict);
}
}
if( nOverwrite ){
fossil_warning("WARNING: %d unmanaged files were overwritten",
nOverwrite);
}
if( nMerge ){
fossil_warning("WARNING: %d uncommitted prior merges", nMerge);
}
}
/*
** Clean up the mid and pid VFILE entries. Then commit the changes.
*/
if( dryRunFlag ){
db_end_transaction(1); /* With --dry-run, rollback changes */
}else{
char *zPwd;
ensure_empty_dirs_created(1);
sqlite3_create_function(g.db, "rmdir", 1, SQLITE_UTF8, 0,
file_rmdir_sql_function, 0, 0);
zPwd = file_getcwd(0,0);
db_multi_exec(
"SELECT rmdir(%Q||name) FROM dir_to_delete"
" WHERE (%Q||name)<>%Q ORDER BY name DESC",
g.zLocalRoot, g.zLocalRoot, zPwd
);
fossil_free(zPwd);
if( g.argc<=3 ){
/* All files updated. Shift the current checkout to the target. */
db_multi_exec("DELETE FROM vfile WHERE vid!=%d", tid);
checkout_set_all_exe(tid);
manifest_to_disk(tid);
db_set_checkout(tid);
}else{
/* A subset of files have been checked out. Keep the current
** checkout unchanged. */
db_multi_exec("DELETE FROM vfile WHERE vid!=%d", vid);
}
if( !internalUpdate ) undo_finish();
if( setmtimeFlag ) vfile_check_signature(tid, CKSIG_SETMTIME);
db_end_transaction(0);
}
}
/*
** Create empty directories specified by the empty-dirs setting.
*/
void ensure_empty_dirs_created(int clearDirTable){
char *zEmptyDirs = db_get("empty-dirs", 0);
if( zEmptyDirs!=0 ){
int i;
Blob dirName;
Blob dirsList;
zEmptyDirs = fossil_strdup(zEmptyDirs);
for(i=0; zEmptyDirs[i]; i++){
if( zEmptyDirs[i]==',' ) zEmptyDirs[i] = ' ';
}
blob_init(&dirsList, zEmptyDirs, -1);
while( blob_token(&dirsList, &dirName) ){
char *zDir = blob_str(&dirName);
char *zPath = mprintf("%s/%s", g.zLocalRoot, zDir);
switch( file_isdir(zPath, RepoFILE) ){
case 0: { /* doesn't exist */
fossil_free(zPath);
zPath = mprintf("%s/%s/x", g.zLocalRoot, zDir);
if( file_mkfolder(zPath, RepoFILE, 0, 1)!=0 ) {
fossil_warning("couldn't create directory %s as "
"required by empty-dirs setting", zDir);
}
break;
}
case 1: { /* exists, and is a directory */
/* make sure this directory is not on the delete list */
if( clearDirTable ){
db_multi_exec(
"DELETE FROM dir_to_delete WHERE name=%Q", zDir
);
}
break;
}
case 2: { /* exists, but isn't a directory */
fossil_warning("file %s found, but a directory is required "
"by empty-dirs setting", zDir);
}
}
fossil_free(zPath);
blob_reset(&dirName);
}
blob_reset(&dirsList);
fossil_free(zEmptyDirs);
}
}
/*
** Get the manifest record for a given revision, or the current checkout if
** zRevision is NULL.
*/
Manifest *historical_manifest(
const char *zRevision /* The check-in to query, or NULL for current */
){
int vid;
Manifest *pManifest;
/* Determine the check-in manifest artifact ID. Panic on failure. */
if( zRevision ){
vid = name_to_typed_rid(zRevision, "ci");
}else if( !g.localOpen ){
vid = name_to_typed_rid(db_get("main-branch", 0), "ci");
}else{
vid = db_lget_int("checkout", 0);
if( !is_a_version(vid) ){
if( vid==0 ) return 0;
zRevision = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
if( zRevision ){
fossil_fatal("checkout artifact is not a check-in: %s", zRevision);
}else{
fossil_fatal("invalid checkout artifact ID: %d", vid);
}
}
}
/* Parse the manifest, given its artifact ID. Panic on failure. */
if( !(pManifest = manifest_get(vid, CFTYPE_MANIFEST, 0)) ){
if( zRevision ){
fossil_fatal("could not parse manifest for check-in: %s", zRevision);
}else{
fossil_fatal("could not parse manifest for current checkout");
}
}
/* Return the manifest pointer. The caller must use manifest_destroy() to
* clean up when finished using the manifest. */
return pManifest;
}
/*
** Get the contents of a file within the check-in "zRevision". If
** zRevision==NULL then get the file content for the current checkout.
*/
int historical_blob(
const char *zRevision, /* The check-in containing the file */
const char *zFile, /* Full treename of the file */
Blob *pBlob, /* Put the content here */
int fatal /* If nonzero, panic if file/artifact not found */
){
int result = 0;
/* Get the manifest for the requested check-in version. This call unavoidably
* panics on failure even if fatal is not set. */
Manifest *pManifest = historical_manifest(zRevision);
/* Try to find the file record within the manifest. */
ManifestFile *pFile = manifest_file_find(pManifest, zFile);
if( !pFile ){
/* Process file-not-found errors. */
if( fatal ){
if( zRevision ){
fossil_fatal("file %s does not exist in check-in %s", zFile, zRevision);
}else{
fossil_fatal("no such file: %s", zFile);
}
}
}else{
/* Get the file's contents. */
result = content_get(fast_uuid_to_rid(pFile->zUuid), pBlob);
/* Process artifact-not-found errors. */
if( !result && fatal ){
if( zRevision ){
fossil_fatal("missing artifact %s for file %s in check-in %s",
pFile->zUuid, zFile, zRevision);
}else{
fossil_fatal("missing artifact %s for file %s", pFile->zUuid, zFile);
}
}
}
/* Deallocate the parsed manifest structure. */
manifest_destroy(pManifest);
/* Return 1 on success and (assuming fatal is not set) 0 if not found. */
return result;
}
/*
** COMMAND: revert
**
** Usage: %fossil revert ?-r REVISION? ?FILE ...?
**
** Revert to the current repository version of FILE, or to
** the version associated with baseline REVISION if the -r flag
** appears.
**
** If FILE was part of a rename operation, both the original file
** and the renamed file are reverted.
**
** Revert all files if no file name is provided.
**
** If a file is reverted accidentally, it can be restored using
** the "fossil undo" command.
**
** Options:
** -r REVISION revert given FILE(s) back to given REVISION
**
** See also: redo, undo, update
*/
void revert_cmd(void){
Manifest *pCoManifest; /* Manifest of current checkout */
Manifest *pRvManifest; /* Manifest of selected revert version */
ManifestFile *pCoFile; /* File within current checkout manifest */
ManifestFile *pRvFile; /* File within revert version manifest */
const char *zFile; /* Filename relative to checkout root */
const char *zRevision; /* Selected revert version, NULL if current */
Blob record = BLOB_INITIALIZER; /* Contents of each reverted file */
int i;
Stmt q;
undo_capture_command_line();
zRevision = find_option("revision", "r", 1);
verify_all_options();
if( g.argc<2 ){
usage("?OPTIONS? [FILE] ...");
}
if( zRevision && g.argc<3 ){
fossil_fatal("the --revision option does not work for the entire tree");
}
db_must_be_within_tree();
/* Get manifests of revert version and (if different) current checkout. */
pRvManifest = historical_manifest(zRevision);
pCoManifest = zRevision ? historical_manifest(0) : 0;
db_begin_transaction();
undo_begin();
db_multi_exec("CREATE TEMP TABLE torevert(name UNIQUE);");
if( g.argc>2 ){
for(i=2; i<g.argc; i++){
Blob fname;
zFile = mprintf("%/", g.argv[i]);
blob_zero(&fname);
file_tree_name(zFile, &fname, 0, 1);
db_multi_exec(
"REPLACE INTO torevert VALUES(%B);"
"INSERT OR IGNORE INTO torevert"
" SELECT pathname"
" FROM vfile"
" WHERE origname=%B;",
&fname, &fname
);
blob_reset(&fname);
}
}else{
int vid;
vid = db_lget_int("checkout", 0);
vfile_check_signature(vid, 0);
db_multi_exec(
"DELETE FROM vmerge;"
"INSERT OR IGNORE INTO torevert "
" SELECT pathname"
" FROM vfile "
" WHERE chnged OR deleted OR rid=0 OR pathname!=origname;"
);
}
db_multi_exec(
"INSERT OR IGNORE INTO torevert"
" SELECT origname"
" FROM vfile"
" WHERE origname!=pathname AND pathname IN (SELECT name FROM torevert);"
);
blob_zero(&record);
db_prepare(&q, "SELECT name FROM torevert");
if( zRevision==0 ){
int vid = db_lget_int("checkout", 0);
zRevision = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
}
while( db_step(&q)==SQLITE_ROW ){
char *zFull;
zFile = db_column_text(&q, 0);
zFull = mprintf("%/%/", g.zLocalRoot, zFile);
pRvFile = pRvManifest? manifest_file_find(pRvManifest, zFile) : 0;
if( !pRvFile ){
if( db_int(0, "SELECT rid FROM vfile WHERE pathname=%Q OR origname=%Q",
zFile, zFile)==0 ){
fossil_print("UNMANAGE %s\n", zFile);
}else{
undo_save(zFile);
file_delete(zFull);
fossil_print("DELETE %s\n", zFile);
}
db_multi_exec(
"UPDATE OR REPLACE vfile"
" SET pathname=origname, origname=NULL"
" WHERE pathname=%Q AND origname!=pathname;"
"DELETE FROM vfile WHERE pathname=%Q",
zFile, zFile
);
}else{
sqlite3_int64 mtime;
int rvChnged = 0;
int rvPerm = manifest_file_mperm(pRvFile);
/* Determine if reverted-to file is different than checked out file. */
if( pCoManifest && (pCoFile = manifest_file_find(pCoManifest, zFile)) ){
rvChnged = manifest_file_mperm(pRvFile)!=rvPerm
|| fossil_strcmp(pRvFile->zUuid, pCoFile->zUuid)!=0;
}
/* Get contents of reverted-to file. */
content_get(fast_uuid_to_rid(pRvFile->zUuid), &record);
undo_save(zFile);
if( file_size(zFull, RepoFILE)>=0
&& (rvPerm==PERM_LNK || file_islink(0))
){
file_delete(zFull);
}
if( rvPerm==PERM_LNK ){
symlink_create(blob_str(&record), zFull);
}else{
blob_write_to_file(&record, zFull);
}
file_setexe(zFull, rvPerm==PERM_EXE);
fossil_print("REVERT %s\n", zFile);
mtime = file_mtime(zFull, RepoFILE);
db_multi_exec(
"UPDATE vfile"
" SET mtime=%lld, chnged=%d, deleted=0, isexe=%d, islink=%d,"
" mrid=rid, mhash=NULL"
" WHERE pathname=%Q OR origname=%Q",
mtime, rvChnged, rvPerm==PERM_EXE, rvPerm==PERM_LNK, zFile, zFile
);
}
blob_reset(&record);
free(zFull);
}
db_finalize(&q);
undo_finish();
db_end_transaction(0);
/* Deallocate parsed manifest structures. */
manifest_destroy(pRvManifest);
manifest_destroy(pCoManifest);
}
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