/*
** 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"
/*
** Return true if the input string is a well-formed wiki page name.
**
** Well-formed wiki page names do not begin or end with whitespace,
** and do not contain tabs or other control characters and do not
** contain more than a single space character in a row. Well-formed
** names must be between 3 and 100 chracters in length, inclusive.
*/
int wiki_name_is_wellformed(const char *z){
int i;
if( z[0]<=0x20 ){
return 0;
}
for(i=1; z[i]; i++){
if( z[i]<0x20 ) return 0;
if( z[i]==0x20 && z[i-1]==0x20 ) return 0;
}
if( z[i-1]==' ' ) return 0;
if( i<3 || i>100 ) return 0;
return 1;
}
/*
** Check a wiki name. If it is not well-formed, then issue an error
** and return true. If it is well-formed, return false.
*/
static int check_name(const char *z){
if( !wiki_name_is_wellformed(z) ){
style_header("Wiki Page Name Error");
@ The wiki name "<b>%h(z)</b>" is not well-formed. Rules for
@ wiki page names:
@ <ul>
@ <li> Must not begin or end with a space.
@ <li> Must not contain any control characters, including tab or
@ newline.
@ <li> Must not have two or more spaces in a row internally.
@ <li> Must be between 3 and 100 characters in length.
@ </ul>
style_footer();
return 1;
}
return 0;
}
/*
** WEBPAGE: wiki
** URL: /wiki/PAGENAME
*/
void wiki_page(void){
char *zTag;
int rid;
Blob wiki;
Manifest m;
char *zPageName;
char *zHtmlPageName;
char *zBody = mprintf("%s","<i>Empty Page</i>");
login_check_credentials();
if( !g.okRdWiki ){ login_needed(); return; }
zPageName = mprintf("%s", g.zExtra);
dehttpize(zPageName);
if( check_name(zPageName) ) return;
zTag = mprintf("wiki-%s", zPageName);
rid = db_int(0,
"SELECT rid FROM tagxref"
" WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
" ORDER BY mtime DESC", zTag
);
free(zTag);
memset(&m, 0, sizeof(m));
blob_zero(&m.content);
if( rid ){
Blob content;
content_get(rid, &content);
manifest_parse(&m, &content);
if( m.type==CFTYPE_WIKI ){
zBody = m.zWiki;
}
}
zHtmlPageName = mprintf("%h", zPageName);
style_header(zHtmlPageName);
blob_init(&wiki, zBody, -1);
wiki_convert(&wiki, 0);
blob_reset(&wiki);
manifest_clear(&m);
if( (rid && g.okWrWiki) || (!rid && g.okNewWiki) ){
@ <hr>
@ [<a href="%s(g.zBaseURL)/wikiedit/%s(g.zExtra)">Edit</a>]
}
style_footer();
}
/*
** WEBPAGE: wikiedit
** URL: /wikiedit/PAGENAME
*/
void wikiedit_page(void){
char *zTag;
int rid;
Blob wiki;
Manifest m;
char *zPageName;
char *zHtmlPageName;
int n;
const char *z;
char *zBody = (char*)P("w");
if( zBody ){
zBody = mprintf("%s", zBody);
}
login_check_credentials();
zPageName = mprintf("%s", g.zExtra);
dehttpize(zPageName);
if( check_name(zPageName) ) return;
zTag = mprintf("wiki-%s", zPageName);
rid = db_int(0,
"SELECT rid FROM tagxref"
" WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
" ORDER BY mtime DESC", zTag
);
free(zTag);
if( (rid && !g.okWrWiki) || (!rid && !g.okNewWiki) ){
login_needed();
return;
}
memset(&m, 0, sizeof(m));
blob_zero(&m.content);
if( rid && zBody==0 ){
Blob content;
content_get(rid, &content);
manifest_parse(&m, &content);
if( m.type==CFTYPE_WIKI ){
zBody = m.zWiki;
}
}
if( P("submit")!=0 && zBody!=0 ){
char *zDate;
Blob cksum;
int nrid;
blob_zero(&wiki);
db_begin_transaction();
zDate = db_text(0, "SELECT datetime('now')");
zDate[10] = 'T';
blob_appendf(&wiki, "D %s\n", zDate);
free(zDate);
blob_appendf(&wiki, "L %F\n", zPageName);
if( rid ){
char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
blob_appendf(&wiki, "P %s\n", zUuid);
free(zUuid);
}
if( g.zLogin ){
blob_appendf(&wiki, "U %F\n", g.zLogin);
}
blob_appendf(&wiki, "W %d\n%s\n", strlen(zBody), zBody);
md5sum_blob(&wiki, &cksum);
blob_appendf(&wiki, "Z %b\n", &cksum);
blob_reset(&cksum);
nrid = content_put(&wiki, 0, 0);
db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
manifest_crosslink(nrid, &wiki);
blob_reset(&wiki);
content_deltify(rid, nrid, 0);
db_end_transaction(0);
cgi_redirect(mprintf("wiki/%s", g.zExtra));
}
if( P("cancel")!=0 ){
cgi_redirect(mprintf("wiki/%s", g.zExtra));
return;
}
if( zBody==0 ){
zBody = mprintf("<i>Empty Page</i>");
}
zHtmlPageName = mprintf("Edit: %h", zPageName);
style_header(zHtmlPageName);
if( P("preview")!=0 ){
blob_zero(&wiki);
blob_append(&wiki, zBody, -1);
@ Preview:<hr>
wiki_convert(&wiki, 0);
@ <hr>
blob_reset(&wiki);
}
for(n=2, z=zBody; z[0]; z++){
if( z[0]=='\n' ) n++;
}
if( n<20 ) n = 20;
if( n>200 ) n = 200;
@ <form method="POST" action="%s(g.zBaseURL)/wikiedit/%t(g.zExtra)">
@ <textarea name="w" class="wikiedit" cols="80"
@ rows="%d(n)" wrap="virtual">%h(zBody)</textarea>
@ <br>
@ <input type="submit" name="preview" value="Preview Your Changes">
@ <input type="submit" name="submit" value="Apply These Changes">
@ <input type="submit" name="cancel" value="Cancel">
@ </form>
manifest_clear(&m);
style_footer();
}
/*
** 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();
}