There are numerous errors in this code.
- patterns should be enclosed in //:
- incorrect: |pattern|
- correct: /pattern/
- all special characters must be escaped with \:
- incorrrect:
/([[)(.*?)|(.*?)(]])/
- corrrect:
/(\[\[)(.*?)\|(.*?)(\]\])/
- backreferences are referenced with $n, where n is a number:
- incorrrect:
<strong><em>2</em></strong>
- corrrect:
<strong><em>$2</em></strong>
Here's the updated working version:
<?php
/*
Plugin Name: MediaWiki Markup for bbPress
Plugin URI: http://bbpress.org/forums/topic/713
Description: Add a subset of MediaWiki markups to bbPress
Version: 0.1
Author: Jason Godesky
Author URI: http://anthropik.com/
*/
/* Copyright 2006 Jason Godesky (email : jason@anthropik.com)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These parameters specify the functioning of this plugin.
Edit accordingly for your specific situation.
*/
# Wiki root; "internal" links will point to the concatenation
# of this root and the link specified.
$mediawiki_filter_params["wiki"] = "http://en.wikipedia.org/wiki";
/*
Stop editing; actual plugin functionality follows.
*/
function bb_mediawikitext($text) {
global $mediawiki_filter_params;
// BASIC FORMATTING
// Bold and italic
$text = preg_replace("/(\\\'\\\'\\\'\\\'\\\')(.*?)(\\\'\\\'\\\'\\\'\\\')/",
"<strong><em>$2</em></strong>", $text);
// Bold
$text = preg_replace("/(\\\'\\\'\\\')(.*?)(\\\'\\\'\\\')/",
"<strong>$2</strong>", $text);
// Italic
$text = preg_replace("/(\\\'\\\')(.*?)(\\\'\\\')/",
"<em>$2</em>", $text);
// LINKS
// Internal links with aliases
$text = preg_replace("/(\\[\\[)(.*?)\\|(.*?)(\\]\\])/",
"<a href=".'"'.$mediawiki_filter_params["wiki"]."$2".'"'.">$3</a>",
$text);
// Internal links without aliases
$text = preg_replace("/(\\[\\[)(.*?)(\\]\\])/",
"<a href=".'"'.$mediawiki_filter_params["wiki"]."$2".'"'.">$2</a>",
$text);
// External links with descriptions
$text = preg_replace("/(\\[)(.*?) (.*?)(\\])/",
"<a href=".'"'."$2".'"'.">$3</a>", $text);
// External links with no description
$count = 1;
$replace = TRUE;
while ($replace) {
$before = $text;
$text = preg_replace("/(\\[)(.*?)(\\])/",
"<a href=".'"'."$2".'"'.">[".$count."]</a>",
$text, 1);
if ($before==$text) { $replace = FALSE; }
$count++;
}
// HEADINGS
$text = preg_replace("/(======)(.*?)(======)/",
"<h6>$2</h6>", $text);
$text = preg_replace("/(=====)(.*?)(=====)/",
"<h5>$2</h5>", $text);
$text = preg_replace("/(====)(.*?)(====)/",
"<h4>$2</h4>", $text);
$text = preg_replace("/(===)(.*?)(===)/",
"<h3>$2</h3>", $text);
$text = preg_replace("/(==)(.*?)(==)/",
"<h2>$2</h2>", $text);
// RETURN
return $text;
}
add_filter('pre_post', 'bb_mediawikitext', 1);
?>
