Source for file lib_markup.php

<?php
/*
 * Lokorin.com
 * Copyright 2004-2006
 * Licensed under the GNU LGPL. See COPYING for full terms.
 */
/**
 * A library for handelng the custom markup used on the site.
 * @author Andreas Launila
 * @version $Revision: 1.3 $
 * @package com.lokorin.lokorin.lib
 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
 */
 
/**
 * For access to common constants and functions.
 */
require_once('common.php');
doInclude('lib_abbreviations');
 
/**
 * Converts text with markup to the corresponding XHTML compliant code.
 * @param string $markupText The markup text that should be converted.
 * @return string XHTML compliant code corresponding to the markupped text.
 * @access public
 */
function convertMarkupToHTML($markupText) {
    //HTML entieties
    $markupText = htmlspecialchars($markupText);
    
    $blockMarkup = array("img", "code", "php", "list", "list_num");
    //Linebreaks to paragraphs.
    //preg_match_all('/\[([^] ]+)[^]]*].*?\[\/\1]/sm', $markupText, $matches);
    //preg_match_all('/(([\s\n]*\[([^] ]+)[^]]*].*?\[\/\3][\s\n]*)*)([^\n]+)(\n\s?\n|$)/sm', $markupText, $matches);
    $matches = array();
    preg_match_all('/([\s\n]*\[([^] ]+)[^]]*].*?\[\/\2][\s\n]*)*([^[]*)/sm', $markupText, $matches);
    //print_r($matches);
    //Sort out all block markup.
    $nonBlockEntry = $markupText;
    foreach($matches[1] as $k => $match) {
        if(in_array($matches[2][$k], $blockMarkup)) {
            $nonBlockEntry = str_replace($match, "\n", $nonBlockEntry);
        }
    }
    //print_r($nonBlockEntry);
    preg_match_all('/([^\n]+)(\n\s?\n|\z)/sm', $nonBlockEntry, $matches);
    foreach($matches[0] as $k => $match) {
        $markupText = str_replace(trim($match), "<p>".$matches[1][$k]."</p>", $markupText);
    }    
    //$markupText = preg_replace('/(([\s\n]*\[([^] ]+)[^]]*].*?\[\/\3][\s\n]*)*)([^\n]+)(\n\s?\n|$)/sm', "$1<p>$4</p>\n", $markupText);
    
    //Abbrevations
    $abbr = AbbreviationHandler::getInstance();
    $matches = array();
    preg_match_all('/\[([^ \]]+)[^\]]*\][^\[]+\[\/\1\]/', $markupText, $matches);
    $markupText = $abbr->handleAbbreviations($markupText);
    foreach($matches[0] as $match) {
        $markupText = str_replace($abbr->handleAbbreviations($match), $match, $markupText);
    }
    
    //Images ([img]...[/img])
    preg_match_all('/\[img( alt=&quot;(.*?)&quot;)?\]([^\[]*)\[\/img\]/',$markupText,$matches);
    //print_r($matches);
    for($i=0; is_array($matches) && ($i < sizeof($matches[3])); $i++) {
        if($matches[2][$i] != '') {
            $alt = $matches[2][$i];
        } else {
            $alt = $matches[3][$i];
        }
        doInclude('lib_images');
        $replacement = getImage($matches[3][$i], $alt);
        $markupText = str_replace($matches[0][$i],$replacement,$markupText);
    }
 
    //Code blocks ([code]...[/code])
    preg_match_all("/\[code\](.*?)\[\/code\]/s", $markupText, $matches);
    for($i=0; is_array($matches) && ($i < sizeof($matches[1])); $i++) {
        $replacement = '<pre>'.str_replace('<br />', '', $matches[1][$i]).'</pre>';
        $markupText = str_replace('[code]'.$matches[1][$i].'[/code]',$replacement,$markupText);
    }
    
    //PHP blocks ([php]...[/php])
    preg_match_all("/\[php\](.*?)\[\/php\]/s", $markupText, $matches);
    for($i=0; is_array($matches) && ($i < sizeof($matches[1])); $i++) {
        ob_start();
        highlight_string(str_replace('<br />', '',  html_entity_decode($matches[1][$i])));
        $code = ob_get_contents();
        ob_end_clean();
        $code = str_replace('<br />', '', $code);
        
        //Make it XHTML strict valid
        $code = preg_replace('/<font color="(.*?)">/', '<span style="color:$1;">', $code);
        $code = str_replace('</font>', '</span>', $code);
        $markupText = str_replace('[php]'.$matches[1][$i].'[/php]', '<pre>'.$code.'</pre>', $markupText);//div class="code"
    }
 
    //Bold text ([b]...[/b])
    $markupText = preg_replace("/\[b\](.*?)\[\/b\]/", "<b>$1</b>", $markupText);
    
    //Italics ([i]...[/i])
    $markupText = preg_replace("/\[i\](.*?)\[\/i\]/", "<i>$1</i>", $markupText);
        
    //List [list]...[*]...[/*]...[/list]
    $markupText = preg_replace("/\[list\](<br \/>\s*)?(.*?)(<br \/>\s*)?\[\/list\]/s", "<ul>$2</ul>", $markupText);
    $markupText = preg_replace("/\[list_num\](<br \/>\s*)?(.*?)(<br \/>\s*)?\[\/list_num\]/s", "<ol>$2</ol>", $markupText);
    preg_match_all("/(<br \/>\s*)?\[\*\](.*?)\[\/\*\]/s", $markupText, $matches);
    foreach($matches[0] as $k => $match) {
        $text = $matches[2][$k];
        $markupText = str_replace($match, 
                "<li>".$abbr->handleAbbreviations($text)."</li>", $markupText);
    }
 
    //Links [link]...[/link]
    $markupText = preg_replace("/\[link\](.*?)\[\/link\]/s", '<a href="$1">$1</a>', $markupText);
 
    //Links [link url="..."]...[/link]
    $markupText = preg_replace('/\[link url=&quot;http:\/\/(.*?)&quot;\]([^\[]*)\[\/link\]/s', '<a href="http://$1">$2</a>', $markupText);
    $markupText = preg_replace('/\[link url=&quot;\/(.*?)&quot;\]([^\[]*)\[\/link\]/s', '<a href="'.ROOT_PATH.'$1">$2</a>', $markupText);
    
    //Abbreviations [abbr="..."]...[/abbr]
    preg_match_all('/\[abbr=&quot;(.*?)&quot;\]([^\[]*)\[\/abbr\]/s', $markupText, $matches);
    foreach($matches[0] as $k => $match) {
        $shortForm = $matches[2][$k];
        $expandedForm = $matches[1][$k];
        $markupText = str_replace($match, 
                $abbr->formatAbbreviation($shortForm, $expandedForm), 
                $markupText);
    }
    
    return $markupText;
} 
 
?>