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<?php
/**
* This file implements the Wiki links plugin for b2evolution
*
* Creates wiki links
*
* b2evolution - {@link http://b2evolution.net/}
* Released under GNU GPL License - {@link http://b2evolution.net/about/license.html}
* @copyright (c)2003-2005 by Francois PLANQUE - {@link http://fplanque.net/}
*
* @package plugins
* @ignore
*/
if( !defined('DB_USER') ) die( 'Please, do not access this page directly.' );
/**
* Includes:
*/
require_once dirname(__FILE__).'/../renderer.class.php';
/**
* @package plugins
*/
class wikilinks_Rendererplugin extends RendererPlugin
{
var $code = 'b2evWcko';
var $name = 'Wiki Links';
var $priority = 35;
var $apply_when = 'opt-in';
var $apply_to_html = true;
var $apply_to_xml = false; // Leave the markup
var $short_desc;
var $long_desc;
/**
* Constructor
*
* {@internal gmcode_Rendererplugin::gmcode_Rendererplugin(-)}}
*/
function wikilinks_Rendererplugin()
{
$this->short_desc = T_('Wiki Links converter');
$this->long_desc = T_('WikiWord links ((link)) [[link ]]');
}
/**
* Perform rendering
*
* {@internal gmcode_Rendererplugin::render(-)}}
*
* @param string content to render (by reference) / rendered content
* @param string Output format, see {@link format_to_output()}
* @return boolean true if we can render something for the required output format
*/
function render( & $content, $format )
{
global $ItemCache, $admin_url, $blog;
if( ! parent::render( $content, $format ) )
{ // We cannot render the required format
return false;
}
// Regular links:
$search = array(
// [[http://url]] :
'#\[\[((http|https|mailto)://([^, <>{}\n\r]+?))\]\]#i',
// [[http://url text]] :
'#\[\[((http|https|mailto)://([^, <>{}\n\r]+?)) ([^\n\r]+?)\]\]#i',
// ((http://url)) :
'#\(\(((http|https|mailto)://([^, <>{}\n\r]+?))\)\)#i',
// ((http://url text)) :
'#\(\(((http|https|mailto)://([^, <>{}\n\r]+?)) ([^\n\r]+?)\)\)#i'
);
$replace = array(
'<a href="$1">$1</a>',
'<a href="$1">$4</a>',
'<a href="$1">$1</a>',
'<a href="$1">$4</a>'
);
$content = preg_replace( $search, $replace, $content );
/*
$ret = preg_replace("#([\n ])aim:([^,< \n\r]+)#i", "\\1<a href=\"aim:goim?screenname=\\2\\3&message=Hello\">\\2\\3</a>", $ret);
$ret = preg_replace("#([\n ])icq:([^,< \n\r]+)#i", "\\1<a href=\"http://wwp.icq.com/scripts/search.dll?to=\\2\\3\">\\2\\3</a>", $ret);
$ret = preg_replace("#([\n ])www\.([a-z0-9\-]+)\.([a-z0-9\-.\~]+)((?:/[^,< \n\r]*)?)#i", "\\1<a href=\"http://www.\\2.\\3\\4\">www.\\2.\\3\\4</a>", $ret);
$ret = preg_replace("#([\n ])([a-z0-9\-_.]+?)@([^,< \n\r]+)#i", "\\1<a href=\"mailto:\\2@\\3\">\\2@\\3</a>", $ret); */
// WIKIWORDS:
$search_wikiwords = array();
$replace_links = array();
// STANDALONE WIKIWORDS:
$search = '/
(?<= \s | ^ ) # Lookbehind for whitespace
([A-Z]+[a-z0-9_]+([A-Z]+[A-Za-z0-9_]+)+) # WikiWord or WikiWordLong
(?= [\.,:;!\?] \s | \s | $ ) # Lookahead for whitespace or punctuation
/x'; // x = extended (spaces + comments allowed)
if( preg_match_all( $search, $content, $matches, PREG_SET_ORDER) )
{
// Construct array of wikiwords to look up in post urltitles
$wikiwords = array();
foreach( $matches as $match )
{
// Convert the WikiWord to an urltitle
$WikiWord = $match[0];
$Wiki_Word = preg_replace( '*([^A-Z_])([A-Z])*', '$1_$2', $WikiWord );
$wiki_word = strtolower( $Wiki_Word );
// echo '<br />Match: [', $WikiWord, '] -> [', $wiki_word, ']';
$wikiwords[ $WikiWord ] = $wiki_word;
}
// Lookup all urltitles at once in DB and preload cache:
$ItemCache->load_urltitle_array( $wikiwords );
// Construct arrays for replacing wikiwords by links:
foreach( $wikiwords as $WikiWord => $wiki_word )
{
// WikiWord
$search_wikiwords[] = '/
(?<= \s | ^ ) # Lookbehind for whitespace or start
(?<! <span\ class="NonExistentWikiWord"> )
'.$WikiWord.' # Specific WikiWord to replace
(?= [\.,:;!\?] \s | \s | $ ) # Lookahead for whitespace or end of string
/sx'; // s = dot matches newlines, x = extended (spaces + comments allowed)
// Find matching Item:
if( ($Item = $ItemCache->get_by_urltitle( $wiki_word, false )) !== false )
{ // Item Found
$permalink = $Item->gen_permalink();
// WikiWord
$replace_links[] = '<a href="'.$permalink.'">'.$WikiWord.'</a>';
}
else
{ // Item not found
$create_link = isset($blog) ? ('<a href="'.$admin_url.'/b2edit.php?blog='.$blog.'&post_title='.preg_replace( '*([^A-Z_])([A-Z])*', '$1%20$2', $WikiWord ).'&post_urltitle='.$wiki_word.'" title="Create...">?</a>') : '';
// WikiWord
$replace_links[] = '<span class="NonExistentWikiWord">'.$WikiWord.$create_link.'</span>';
}
}
}
// BRACKETED WIKIWORDS:
$search = '/
(?<= \(\( | \[\[ ) # Lookbehind for (( or [[
([A-Z]+[A-Za-z0-9_]*) # Anything from Wikiword to WikiWordLong
(?= ( \s .*? )? ( \)\) | \]\] ) ) # Lookahead for )) or ]]
/x'; // x = extended (spaces + comments allowed)
if( preg_match_all( $search, $content, $matches, PREG_SET_ORDER) )
{
// Construct array of wikiwords to look up in post urltitles
$wikiwords = array();
foreach( $matches as $match )
{
// Convert the WikiWord to an urltitle
$WikiWord = $match[0];
$Wiki_Word = preg_replace( '*([^A-Z_])([A-Z])*', '$1_$2', $WikiWord );
$wiki_word = strtolower( $Wiki_Word );
// echo '<br />Match: [', $WikiWord, '] -> [', $wiki_word, ']';
$wikiwords[ $WikiWord ] = $wiki_word;
}
// Lookup all urltitles at once in DB and preload cache:
$ItemCache->load_urltitle_array( $wikiwords );
// Construct arrays for replacing wikiwords by links:
foreach( $wikiwords as $WikiWord => $wiki_word )
{
// [[WikiWord text]]
$search_wikiwords[] = '*
\[\[
'.$WikiWord.' # Specific WikiWord to replace
\s (.+?)
\]\]
*sx'; // s = dot matches newlines, x = extended (spaces + comments allowed)
// ((WikiWord text))
$search_wikiwords[] = '*
\(\(
'.$WikiWord.' # Specific WikiWord to replace
\s (.+?)
\)\)
*sx'; // s = dot matches newlines, x = extended (spaces + comments allowed)
// [[Wikiword]]
$search_wikiwords[] = '*
\[\[
'.$WikiWord.' # Specific WikiWord to replace
\]\]
*sx'; // s = dot matches newlines, x = extended (spaces + comments allowed)
// ((Wikiword))
$search_wikiwords[] = '*
\(\(
'.$WikiWord.' # Specific WikiWord to replace
\)\)
*sx'; // s = dot matches newlines, x = extended (spaces + comments allowed)
// Find matching Item:
if( ($Item = $ItemCache->get_by_urltitle( $wiki_word, false )) !== false )
{ // Item Found
$permalink = $Item->gen_permalink();
// [[WikiWord text]]
$replace_links[] = '<a href="'.$permalink.'">$1</a>';
// ((WikiWord text))
$replace_links[] = '<a href="'.$permalink.'">$1</a>';
// [[Wikiword]]
$replace_links[] = '<a href="'.$permalink.'">'.$WikiWord.'</a>';
// ((Wikiword))
$replace_links[] = '<a href="'.$permalink.'">'.$WikiWord.'</a>';
}
else
{ // Item not found
$create_link = isset($blog) ? ('<a href="'.$admin_url.'/b2edit.php?blog='.$blog.'&post_title='.preg_replace( '*([^A-Z_])([A-Z])*', '$1%20$2', $WikiWord ).'&post_urltitle='.$wiki_word.'" title="Create...">?</a>') : '';
// [[WikiWord text]]
$replace_links[] = '<span class="NonExistentWikiWord">$1'.$create_link.'</span>';
// ((WikiWord text))
$replace_links[] = '<span class="NonExistentWikiWord">$1'.$create_link.'</span>';
// [[Wikiword]]
$replace_links[] = '<span class="NonExistentWikiWord">'.$WikiWord.$create_link.'</span>';
// ((Wikiword))
$replace_links[] = '<span class="NonExistentWikiWord">'.$WikiWord.$create_link.'</span>';
}
}
}
// echo '<br />---';
// pre_dump( $search_wikiwords );
if( count( $search_wikiwords ) )
{ // We have set some links to replace:
$content = preg_replace( $search_wikiwords, $replace_links, $content );
}
return true;
}
}
// Register the plugin:
$this->register( new wikilinks_Rendererplugin() );
?>
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