/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*
Copyright 2013-2021 Stephan Beal (https://wanderinghorse.net).
Derived heavily from previous work:
Copyright (c) 2013 D. Richard Hipp (https://www.hwaci.com/drh/)
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.
*****************************************************************************
This file implements wiki-related parts of the library.
*/
#include "fossil-scm/fossil-internal.h"
#include <assert.h>
/* Only for debugging */
#include <stdio.h>
#define MARKER(pfexp) \
do{ printf("MARKER: %s:%d:%s():\t",__FILE__,__LINE__,__func__); \
printf pfexp; \
} while(0)
int fsl_wiki_names_get( fsl_cx * f, fsl_list * tgt ){
fsl_db * db = fsl_needs_repo(f);
if(!f || !tgt) return FSL_RC_MISUSE;
else if(!db) return FSL_RC_NOT_A_REPO;
else {
int rc = fsl_db_select_slist( db, tgt,
"SELECT substr(tagname,6) AS name "
"FROM tag "
"WHERE tagname GLOB 'wiki-*' "
"ORDER BY lower(name)");
if(rc && db->error.code && !f->error.code){
fsl_cx_uplift_db_error(f, db);
}
return rc;
}
}
int fsl_wiki_latest_rid( fsl_cx * f, char const * pageName, fsl_id_t * rid ){
fsl_db * db = f ? fsl_needs_repo(f) : NULL;
if(!f || !pageName) return FSL_RC_MISUSE;
else if(!*pageName) return FSL_RC_RANGE;
else if(!db) return FSL_RC_NOT_A_REPO;
else return fsl_db_get_id(db, rid,
"SELECT x.rid FROM tag t, tagxref x "
"WHERE x.tagid=t.tagid "
"AND t.tagname='wiki-%q' "
"ORDER BY mtime DESC LIMIT 1",
pageName);
}
char fsl_wiki_page_exists(fsl_cx * f, char const * pageName){
fsl_id_t rid = 0;
return (0==fsl_wiki_latest_rid(f, pageName, &rid))
&& (rid>0);
}
int fsl_wiki_load_latest( fsl_cx * f, char const * pageName, fsl_deck * d ){
fsl_db * db = f ? fsl_needs_repo(f) : NULL;
if(!f || !pageName || !d) return FSL_RC_MISUSE;
else if(!*pageName) return FSL_RC_RANGE;
else if(!db) return FSL_RC_NOT_A_REPO;
else{
fsl_id_t rid = 0;
int rc = fsl_wiki_latest_rid(f, pageName, &rid);
if(rc) return rc;
else if(0==rid) return FSL_RC_NOT_FOUND;
return fsl_deck_load_rid( f, d, rid, FSL_SATYPE_WIKI);
}
}
int fsl_wiki_foreach_page( fsl_cx * f, fsl_deck_visitor_f cb, void * state ){
fsl_db * db = f ? fsl_needs_repo(f) : NULL;
if(!f || !cb) return FSL_RC_MISUSE;
else if(!db) return FSL_RC_NOT_A_REPO;
else{
fsl_stmt st = fsl_stmt_empty;
fsl_stmt names = fsl_stmt_empty;
int rc;
char doBreak = 0;
rc = fsl_db_prepare(db, &names,
"SELECT substr(tagname,6) AS name "
"FROM tag "
"WHERE tagname GLOB 'wiki-*' "
"ORDER BY lower(name)");
if(rc) return rc;
while( !doBreak && !rc
&& (FSL_RC_STEP_ROW==fsl_stmt_step(&names))){
fsl_size_t nameLen = 0;
char const * pageName = fsl_stmt_g_text(&names, 0, &nameLen);
if(!st.stmt){
rc = fsl_db_prepare(db, &st,
"SELECT x.rid AS mrid FROM tag t, tagxref x "
"WHERE x.tagid=t.tagid "
"AND t.tagname='wiki-'||? "
"ORDER BY mtime DESC LIMIT 1");
if(rc) goto end;
}
rc = fsl_stmt_bind_text(&st, 1, pageName, (fsl_int_t)nameLen, 0);
if(rc) break;
rc = fsl_stmt_step(&st);
assert(FSL_RC_STEP_ROW==rc);
if(FSL_RC_STEP_ROW==rc){
fsl_deck d = fsl_deck_empty;
fsl_id_t rid = fsl_stmt_g_id(&st, 0);
rc = fsl_deck_load_rid( f, &d, rid, FSL_SATYPE_WIKI);
if(!rc){
rc = cb(f, &d, state);
if(FSL_RC_BREAK==rc){
rc = 0;
doBreak = 1;
}
}
fsl_deck_finalize(&d);
}
fsl_stmt_reset(&st);
}
end:
fsl_stmt_finalize(&st);
fsl_stmt_finalize(&names);
return rc;
}
}
int fsl_wiki_save(fsl_cx * f, char const * pageName,
fsl_buffer const * b,
char const * userName,
char const * mimeType,
fsl_wiki_save_mode_t createPolicy ){
fsl_db * db = f ? fsl_needs_repo(f) : NULL;
if(!f || !pageName || !b) return FSL_RC_MISUSE;
else if(!*pageName) return FSL_RC_RANGE;
else if(!db) return FSL_RC_NOT_A_REPO;
else{
fsl_deck d = fsl_deck_empty;
fsl_id_t parentRid = 0;
int rc = fsl_wiki_latest_rid(f, pageName, &parentRid);
double mtime;
if(rc) return rc;
else if((FSL_WIKI_SAVE_MODE_UPDATE==createPolicy)
&& !parentRid){
return fsl_cx_err_set(f, FSL_RC_NOT_FOUND,
"No such wiki page: %s",
pageName);
}
else if((FSL_WIKI_SAVE_MODE_CREATE==createPolicy)
&& (parentRid>0)){
return fsl_cx_err_set(f, FSL_RC_ALREADY_EXISTS,
"Wiki page already exists: %s",
pageName);
}
mtime = fsl_db_julian_now(db);
fsl_deck_init(f, &d, FSL_SATYPE_WIKI);
rc = fsl_deck_D_set(&d, mtime);
assert(!rc);
rc = fsl_deck_L_set(&d, pageName, -1);
if(!rc && mimeType && *mimeType){
rc = fsl_deck_N_set(&d, mimeType, -1);
}
if( !rc && parentRid ){
char * zUuid = fsl_rid_to_uuid(f, parentRid);
if(!zUuid){
rc = FSL_RC_OOM;
}else{
rc = fsl_deck_P_add(&d,zUuid);
fsl_free(zUuid);
}
}
if(rc) goto end;
{
char * u = NULL;
if(!userName) userName = fsl_cx_user_get(f);
if(!userName){
u = fsl_guess_user_name();
if(!u) rc = FSL_RC_OOM;
}
if(!rc) rc = fsl_deck_U_set(&d, u ? u : userName, -1);
if(u) fsl_free(u);
if(rc) goto end;
}
rc = fsl_deck_W_set(&d, fsl_buffer_cstr(b), (fsl_int_t)b->used);
#if 0
fsl_deck_output(f, &d, fsl_output_f_FILE, stdout);
#endif
if(!rc) rc = fsl_deck_save(&d, 0);
end:
fsl_deck_finalize(&d);
return rc;
}
}
#undef MARKER