/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public
** License version 2 as published by the Free Software Foundation.
**
** 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. See the GNU
** General Public License for more details.
**
** You should have received a copy of the GNU General Public
** License along with this library; if not, write to the
** Free Software Foundation, Inc., 59 Temple Place - Suite 330,
** Boston, MA 02111-1307, USA.
**
** Author contact information:
** drh@hwaci.com
** http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to do formatting of wiki text.
*/
#include <assert.h>
#include "config.h"
#include "wiki.h"
/*
** Create a fake replicate of the "vfile" table as a TEMP table
** using the manifest identified by manid.
*/
static void create_fake_vfile(int manid){
static const char zVfileDef[] =
@ CREATE TEMP TABLE vfile(
@ id INTEGER PRIMARY KEY, -- ID of the checked out file
@ vid INTEGER REFERENCES blob, -- The version this file is part of.
@ chnged INT DEFAULT 0, -- 0:unchnged 1:edited 2:m-chng 3:m-add
@ deleted BOOLEAN DEFAULT 0, -- True if deleted
@ rid INTEGER, -- Originally from this repository record
@ mrid INTEGER, -- Based on this record due to a merge
@ pathname TEXT, -- Full pathname
@ UNIQUE(pathname,vid)
@ );
;
db_multi_exec(zVfileDef);
load_vfile_from_rid(manid);
}
/*
** Locate the wiki page with the name zPageName and render it.
*/
static void locate_and_render_wikipage(const char *zPageName){
Stmt q;
int id = 0;
int rid = 0;
int chnged = 0;
char *zPathname = 0;
db_prepare(&q,
"SELECT id, rid, chnged, pathname FROM vfile"
" WHERE (pathname='%q.wiki' OR pathname LIKE '%%/%q.wiki')"
" AND NOT deleted", zPageName, zPageName
);
if( db_step(&q)==SQLITE_ROW ){
id = db_column_int(&q, 0);
rid = db_column_int(&q, 1);
chnged = db_column_int(&q, 2);
if( chnged || rid==0 ){
zPathname = db_column_malloc(&q, 3);
}
}
db_finalize(&q);
if( id ){
Blob page, src;
char *zTitle = "wiki";
char *z;
blob_zero(&src);
if( zPathname ){
zPathname = mprintf("%s/%z", g.zLocalRoot, zPathname);
blob_read_from_file(&src, zPathname);
free(zPathname);
}else{
content_get(rid, &src);
}
/* The wiki page content is now in src. Check to see if
** there is a <readonly/> or <appendonly/> element at the
** beginning of the content.
*/
z = blob_str(&src);
while( isspace(*z) ) z++;
if( strncmp(z, "<readonly/>", 11)==0 ){
z += 11;
}else if( strncmp(z, "<appendonly/>", 13)==0 ){
z += 13;
}
/* Check for <title>...</title> markup and remove it if present. */
while( isspace(*z) ) z++;
if( strncmp(z, "<title>", 7)==0 ){
int i;
for(i=7; z[i] && z[i]!='<'; i++){}
if( z[i]=='<' && strncmp(&z[i], "</title>", 8)==0 ){
zTitle = htmlize(&z[7], i-7);
z = &z[i+8];
}
}
/* Render the page */
style_header(zTitle);
blob_init(&page, z, -1);
wiki_convert(&page, cgi_output_blob(), WIKI_HTML);
blob_reset(&src);
}else{
style_header("Unknown Wiki Page");
@ The wiki page "%h(zPageName)" does not exist.
}
style_footer();
}
/*
** WEBPAGE: wiki
** URL: /wiki/PAGENAME
**
** If the local database is available (which only happens if run
** as "server" instead of "cgi" or "http") then the file is taken
** from the local checkout. If there is no local checkout, then
** the content is taken from the "head" baseline.
*/
void wiki_page(void){
login_check_credentials();
if( !g.okRdWiki ){ login_needed(); return; }
if( !g.localOpen ){
int headid = db_int(0,
"SELECT cid FROM plink ORDER BY mtime DESC LIMIT 1"
);
create_fake_vfile(headid);
}
locate_and_render_wikipage(g.zExtra);
}
/*
** The g.zExtra value is of the form UUID/otherstuff.
** Extract the UUID and convert it to a record id. Leave
** g.zExtra holding just otherstuff. If UUID does not exist
** or is malformed, return 0 and leave g.zExtra unchanged.
*/
int extract_uuid_from_url(void){
int i, rid;
Blob uuid;
for(i=0; g.zExtra[i] && g.zExtra[i]!='/'; i++){}
blob_zero(&uuid);
blob_append(&uuid, g.zExtra, i);
rid = name_to_uuid(&uuid, 0);
blob_reset(&uuid);
if( rid ){
while( g.zExtra[i]=='/' ){ i++; }
g.zExtra = &g.zExtra[i];
}
return rid;
}
/*
** WEBPAGE: bwiki
** URL: /bwiki/UUID/PAGENAME
**
** UUID specifies a baseline. Render the wiki page PAGENAME as
** it appears in that baseline.
*/
void bwiki_page(void){
int headid;
login_check_credentials();
if( !g.okRdWiki || !g.okHistory ){ login_needed(); return; }
headid = extract_uuid_from_url();
if( headid ){
create_fake_vfile(headid);
}
locate_and_render_wikipage(g.zExtra);
}
/*
** WEBPAGE: ambiguous
**
** This is the destination for UUID hyperlinks that are ambiguous.
** Show all possible choices for the destination with links to each.
**
** The ambiguous UUID prefix is in g.zExtra
*/
void ambiguous_page(void){
Stmt q;
style_header("Ambiguous UUID");
@ <p>The link <a href="%s(g.zBaseURL)/ambiguous/%T(g.zExtra)">
@ [%h(g.zExtra)]</a> is ambiguous. It might mean any of the following:</p>
@ <ul>
db_prepare(&q, "SELECT uuid, rid FROM blob WHERE uuid>=%Q AND uuid<'%qz'"
" ORDER BY uuid", g.zExtra, g.zExtra);
while( db_step(&q)==SQLITE_ROW ){
const char *zUuid = db_column_text(&q, 0);
int rid = db_column_int(&q, 1);
@ <li> %s(zUuid) - %d(rid)
}
db_finalize(&q);
@ </ul>
style_footer();
}