class.t3lib_parsehtml.php

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<?php
/***************************************************************
*  Copyright notice
*
*  (c) 1999-2008 Kasper Skaarhoj (kasperYYYY@typo3.com)
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project 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.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*  A copy is found in the textfile GPL.txt and important notices to the license
*  from the author is found in LICENSE.txt distributed with these scripts.
*
*
*  This script 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.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
/**
 * Contains class with functions for parsing HTML code.
 *
 * $Id: class.t3lib_parsehtml.php 4432 2008-11-07 03:52:22Z flyguide $
 * Revised for TYPO3 3.6 July/2003 by Kasper Skaarhoj
 *
 * @author  Kasper Skaarhoj <kasperYYYY@typo3.com>
 */
/**
 * [CLASS/FUNCTION INDEX of SCRIPT]
 *
 *
 *
 *  106: class t3lib_parsehtml
 *  123:     function getSubpart($content, $marker)
 *  156:     function substituteSubpart($content,$marker,$subpartContent,$recursive=1,$keepMarker=0)
 *
 *              SECTION: Parsing HTML code
 *  247:     function splitIntoBlock($tag,$content,$eliminateExtraEndTags=0)
 *  308:     function splitIntoBlockRecursiveProc($tag,$content,&$procObj,$callBackContent,$callBackTags,$level=0)
 *  344:     function splitTags($tag,$content)
 *  378:     function getAllParts($parts,$tag_parts=1,$include_tag=1)
 *  396:     function removeFirstAndLastTag($str)
 *  412:     function getFirstTag($str)
 *  426:     function getFirstTagName($str,$preserveCase=FALSE)
 *  445:     function get_tag_attributes($tag,$deHSC=0)
 *  486:     function split_tag_attributes($tag)
 *  524:     function checkTagTypeCounts($content,$blockTags='a,b,blockquote,body,div,em,font,form,h1,h2,h3,h4,h5,h6,i,li,map,ol,option,p,pre,select,span,strong,table,td,textarea,tr,u,ul', $soloTags='br,hr,img,input,area')
 *
 *              SECTION: Clean HTML code
 *  617:     function HTMLcleaner($content, $tags=array(),$keepAll=0,$hSC=0,$addConfig=array())
 *  814:     function bidir_htmlspecialchars($value,$dir)
 *  837:     function prefixResourcePath($main_prefix,$content,$alternatives=array(),$suffix='')
 *  919:     function prefixRelPath($prefix,$srcVal,$suffix='')
 *  937:     function cleanFontTags($value,$keepFace=0,$keepSize=0,$keepColor=0)
 *  967:     function mapTags($value,$tags=array(),$ltChar='<',$ltChar2='<')
 *  982:     function unprotectTags($content,$tagList='')
 * 1015:     function stripTagsExcept($value,$tagList)
 * 1038:     function caseShift($str,$flag,$cacheKey='')
 * 1065:     function compileTagAttribs($tagAttrib,$meta=array(), $xhtmlClean=0)
 * 1093:     function get_tag_attributes_classic($tag,$deHSC=0)
 * 1106:     function indentLines($content, $number=1, $indentChar="\t")
 * 1123:     function HTMLparserConfig($TSconfig,$keepTags=array())
 * 1247:     function XHTML_clean($content)
 * 1269:     function processTag($value,$conf,$endTag,$protected=0)
 * 1315:     function processContent($value,$dir,$conf)
 *
 * TOTAL FUNCTIONS: 28
 * (This index is automatically created/updated by the extension "extdeveval")
 *
 */




















/**
 * Functions for parsing HTML.
 * You are encouraged to use this class in your own applications
 *
 * @author  Kasper Skaarhoj <kasperYYYY@typo3.com>
 * @package TYPO3
 * @subpackage t3lib
 */
class t3lib_parsehtml   {

    protected $caseShift_cache = array();

    /**
     * Returns the first subpart encapsulated in the marker, $marker
     * (possibly present in $content as a HTML comment)
     *
     * @param   string      Content with subpart wrapped in fx. "###CONTENT_PART###" inside.
     * @param   string      Marker string, eg. "###CONTENT_PART###"
     * @return  string
     */
    public static function getSubpart($content, $marker) {
        $start = strpos($content, $marker);

        if ($start === false) {
            return '';
        }

        $start += strlen($marker);
        $stop   = strpos($content, $marker, $start);

            // Q: What shall get returned if no stop marker is given
            // /*everything till the end*/ or nothing?
        if ($stop===false) {
            return ''; /*substr($content, $start)*/
        }

        $content = substr($content, $start, $stop-$start);

        $matches = array();
        if (preg_match('/^([^\<]*\-\-\>)(.*)(\<\!\-\-[^\>]*)$/s', $content, $matches) === 1) {
            return $matches[2];
        }

        $matches = array(); // resetting $matches
        if (preg_match('/(.*)(\<\!\-\-[^\>]*)$/s', $content, $matches) === 1) {
            return $matches[1];
        }

        $matches = array(); // resetting $matches
        if (preg_match('/^([^\<]*\-\-\>)(.*)$/s', $content, $matches) === 1) {
            return $matches[2];
        }

        return $content;
    }

    /**
     * Substitutes a subpart in $content with the content of $subpartContent.
     *
     * @param   string      Content with subpart wrapped in fx. "###CONTENT_PART###" inside.
     * @param   string      Marker string, eg. "###CONTENT_PART###"
     * @param   array       If $subpartContent happens to be an array, it's [0] and [1] elements are wrapped around the content of the subpart (fetched by getSubpart())
     * @param   boolean     If $recursive is set, the function calls itself with the content set to the remaining part of the content after the second marker. This means that proceding subparts are ALSO substituted!
     * @param   boolean     If set, the marker around the subpart is not removed, but kept in the output
     * @return  string      Processed input content
     */
    public static function substituteSubpart($content, $marker, $subpartContent, $recursive = 1, $keepMarker = 0) {
        $start = strpos($content, $marker);

        if ($start === false) {
            return $content;
        }

        $startAM = $start + strlen($marker);
        $stop    = strpos($content, $marker, $startAM);

        if ($stop===false) {
            return $content;
        }

        $stopAM  = $stop + strlen($marker);
        $before  = substr($content, 0, $start);
        $after   = substr($content, $stopAM);
        $between = substr($content, $startAM, $stop-$startAM);

        if ($recursive) {
            $after = t3lib_parsehtml::substituteSubpart(
                $after,
                $marker,
                $subpartContent,
                $recursive,
                $keepMarker
            );
        }

        if ($keepMarker) {
            $matches = array();
            if (preg_match('/^([^\<]*\-\-\>)(.*)(\<\!\-\-[^\>]*)$/s', $between, $matches) === 1) {
                $before  .= $marker.$matches[1];
                $between  = $matches[2];
                $after    = $matches[3] . $marker . $after;
            } elseif (preg_match('/^(.*)(\<\!\-\-[^\>]*)$/s', $between, $matches) === 1) {
                $before  .= $marker;
                $between  = $matches[1];
                $after    = $matches[2] . $marker . $after;
            } elseif (preg_match('/^([^\<]*\-\-\>)(.*)$/s', $between, $matches) === 1) {
                $before  .= $marker . $matches[1];
                $between  = $matches[2];
                $after    = $marker . $after;
            } else  {
                $before .= $marker;
                $after   = $marker . $after;
            }

        } else {
            $matches = array();
            if (preg_match('/^(.*)\<\!\-\-[^\>]*$/s', $before, $matches) === 1) {
                $before = $matches[1];
            }

            if (is_array($subpartContent)) {
                $matches = array();
                if (preg_match('/^([^\<]*\-\-\>)(.*)(\<\!\-\-[^\>]*)$/s', $between, $matches) === 1) {
                    $between = $matches[2];
                } elseif (preg_match('/^(.*)(\<\!\-\-[^\>]*)$/s', $between, $matches)===1) {
                    $between = $matches[1];
                } elseif (preg_match('/^([^\<]*\-\-\>)(.*)$/s', $between, $matches)===1) {
                    $between = $matches[2];
                }
            }

            $matches = array(); // resetting $matches
            if (preg_match('/^[^\<]*\-\-\>(.*)$/s', $after, $matches) === 1) {
                $after = $matches[1];
            }
        }

        if (is_array($subpartContent)) {
            $between = $subpartContent[0] . $between . $subpartContent[1];
        } else  {
            $between = $subpartContent;
        }

        return $before . $between . $after;
    }

    /**
     * Substitues multiple subparts at once
     *
     * @param   string      The content stream, typically HTML template content.
     * @param   array       The array of key/value pairs being subpart/content values used in the substitution. For each element in this array the function will substitute a subpart in the content stream with the content.
     * @return  string      The processed HTML content string.
     */
    public static function substituteSubpartArray($content, array $subpartsContent) {
        foreach ($subpartsContent as $subpartMarker => $subpartContent) {
            $content = t3lib_parsehtml::substituteSubpart(
                $content,
                $subpartMarker,
                $subpartContent
            );
        }

        return $content;
    }


    /**
     * Substitutes a marker string in the input content
     * (by a simple str_replace())
     *
     * @param   string      The content stream, typically HTML template content.
     * @param   string      The marker string, typically on the form "###[the marker string]###"
     * @param   mixed       The content to insert instead of the marker string found.
     * @return  string      The processed HTML content string.
     * @see substituteSubpart()
     */
    public static function substituteMarker($content, $marker, $markContent) {
        return str_replace($marker, $markContent, $content);
    }


    /**
     * Traverses the input $markContentArray array and for each key the marker
     * by the same name (possibly wrapped and in upper case) will be
     * substituted with the keys value in the array. This is very useful if you
     * have a data-record to substitute in some content. In particular when you
     * use the $wrap and $uppercase values to pre-process the markers. Eg. a
     * key name like "myfield" could effectively be represented by the marker
     * "###MYFIELD###" if the wrap value was "###|###" and the $uppercase
     * boolean true.
     *
     * @param   string      The content stream, typically HTML template content.
     * @param   array       The array of key/value pairs being marker/content values used in the substitution. For each element in this array the function will substitute a marker in the content stream with the content.
     * @param   string      A wrap value - [part 1] | [part 2] - for the markers before substitution
     * @param   boolean     If set, all marker string substitution is done with upper-case markers.
     * @param   boolean     If set, all unused marker are deleted.
     * @return  string      The processed output stream
     * @see substituteMarker(), substituteMarkerInObject(), TEMPLATE()
     */
    public static function substituteMarkerArray($content, $markContentArray, $wrap = '', $uppercase = 0, $deleteUnused = 0) {
        if (is_array($markContentArray)) {
            $wrapArr = t3lib_div::trimExplode('|', $wrap);

            foreach ($markContentArray as $marker => $markContent) {
                if ($uppercase) {
                        // use strtr instead of strtoupper to avoid locale problems with Turkish
                    $marker = strtr(
                        $marker,
                        'abcdefghijklmnopqrstuvwxyz',
                        'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
                    );
                }

                if (count($wrapArr) > 0) {
                    $marker = $wrapArr[0] . $marker . $wrapArr[1];
                }

                $content = str_replace($marker, $markContent, $content);
            }

            if ($deleteUnused) {
                if (empty($wrap)) {
                    $wrapArr = array('###', '###');
                }

                $content = preg_replace('/'.preg_quote($wrapArr[0]).'([A-Z0-9_-|]*)'.preg_quote($wrapArr[1]).'/is', '', $content);
            }
        }

        return $content;
    }







    /************************************
     *
     * Parsing HTML code
     *
     ************************************/

    /**
     * Returns an array with the $content divided by tag-blocks specified with the list of tags, $tag
     * Even numbers in the array are outside the blocks, Odd numbers are block-content.
     * Use ->getAllParts() and ->removeFirstAndLastTag() to process the content if needed.
     *
     * @param   string      List of tags, comma separated.
     * @param   string      HTML-content
     * @param   boolean     If set, excessive end tags are ignored - you should probably set this in most cases.
     * @return  array       Even numbers in the array are outside the blocks, Odd numbers are block-content.
     * @see splitTags(), getAllParts(), removeFirstAndLastTag()
     */
    function splitIntoBlock($tag,$content,$eliminateExtraEndTags=0) {
        $tags=array_unique(t3lib_div::trimExplode(',',$tag,1));
        $regexStr = '/\<\/?('.implode('|', $tags).')(\s*\>|\s[^\>]*\>)/si';

        $parts = preg_split($regexStr, $content);

        $newParts=array();
        $pointer=strlen($parts[0]);
        $buffer=$parts[0];
        $nested=0;
        reset($parts);
        next($parts);
        while(list($k,$v)=each($parts)) {
            $isEndTag= substr($content,$pointer,2)=='</' ? 1 : 0;
            $tagLen = strcspn(substr($content,$pointer),'>')+1;

            if (!$isEndTag) {   // We meet a start-tag:
                if (!$nested)   {   // Ground level:
                    $newParts[]=$buffer;    // previous buffer stored
                    $buffer='';
                }
                $nested++;  // We are inside now!
                $mbuffer=substr($content,$pointer,strlen($v)+$tagLen);  // New buffer set and pointer increased
                $pointer+=strlen($mbuffer);
                $buffer.=$mbuffer;
            } else {    // If we meet an endtag:
                $nested--;  // decrease nested-level
                $eliminated=0;
                if ($eliminateExtraEndTags && $nested<0)    {
                    $nested=0;
                    $eliminated=1;
                } else {
                    $buffer.=substr($content,$pointer,$tagLen); // In any case, add the endtag to current buffer and increase pointer
                }
                $pointer+=$tagLen;
                if (!$nested && !$eliminated)   {   // if we're back on ground level, (and not by eliminating tags...
                    $newParts[]=$buffer;
                    $buffer='';
                }
                $mbuffer=substr($content,$pointer,strlen($v));  // New buffer set and pointer increased
                $pointer+=strlen($mbuffer);
                $buffer.=$mbuffer;
            }

        }
        $newParts[]=$buffer;
        return $newParts;
    }

    /**
     * Splitting content into blocks *recursively* and processing tags/content with call back functions.
     *
     * @param   string      Tag list, see splitIntoBlock()
     * @param   string      Content, see splitIntoBlock()
     * @param   object      Object where call back methods are.
     * @param   string      Name of call back method for content; "function callBackContent($str,$level)"
     * @param   string      Name of call back method for tags; "function callBackTags($tags,$level)"
     * @param   integer     Indent level
     * @return  string      Processed content
     * @see splitIntoBlock()
     */
    function splitIntoBlockRecursiveProc($tag,$content,&$procObj,$callBackContent,$callBackTags,$level=0)   {
        $parts = $this->splitIntoBlock($tag,$content,TRUE);
        foreach($parts as $k => $v) {
            if ($k%2)   {
                $firstTagName = $this->getFirstTagName($v, TRUE);
                $tagsArray = array();
                $tagsArray['tag_start'] = $this->getFirstTag($v);
                $tagsArray['tag_end'] = '</'.$firstTagName.'>';
                $tagsArray['tag_name'] = strtolower($firstTagName);
                $tagsArray['add_level'] = 1;
                $tagsArray['content'] = $this->splitIntoBlockRecursiveProc($tag,$this->removeFirstAndLastTag($v),$procObj,$callBackContent,$callBackTags,$level+$tagsArray['add_level']);

                if ($callBackTags)  $tagsArray = $procObj->$callBackTags($tagsArray,$level);

                $parts[$k] =
                    $tagsArray['tag_start'].
                    $tagsArray['content'].
                    $tagsArray['tag_end'];
            } else {
                if ($callBackContent)   $parts[$k] = $procObj->$callBackContent($parts[$k],$level);
            }
        }

        return implode('',$parts);
    }

    /**
     * Returns an array with the $content divided by tag-blocks specified with the list of tags, $tag
     * Even numbers in the array are outside the blocks, Odd numbers are block-content.
     * Use ->getAllParts() and ->removeFirstAndLastTag() to process the content if needed.
     *
     * @param   string      List of tags
     * @param   string      HTML-content
     * @return  array       Even numbers in the array are outside the blocks, Odd numbers are block-content.
     * @see splitIntoBlock(), getAllParts(), removeFirstAndLastTag()
     */
    function splitTags($tag,$content)   {
        $tags = t3lib_div::trimExplode(',',$tag,1);
        $regexStr = '/\<('.implode('|', $tags).')(\s[^>]*)?\/?>/si';
        $parts = preg_split($regexStr, $content);

        $pointer = strlen($parts[0]);
        $newParts = array();
        $newParts[] = $parts[0];
        reset($parts);
        next($parts);
        while(list($k,$v)=each($parts)) {
            $tagLen = strcspn(substr($content,$pointer),'>')+1;

                // Set tag:
            $tag = substr($content,$pointer,$tagLen);   // New buffer set and pointer increased
            $newParts[] = $tag;
            $pointer+= strlen($tag);

                // Set content:
            $newParts[] = $v;
            $pointer+= strlen($v);
        }
        return $newParts;
    }

    /**
     * Returns an array with either tag or non-tag content of the result from ->splitIntoBlock()/->splitTags()
     *
     * @param   array       Parts generated by ->splitIntoBlock() or >splitTags()
     * @param   boolean     Whether to return the tag-parts (default,true) or what was outside the tags.
     * @param   boolean     Whether to include the tags in the tag-parts (most useful for input made by ->splitIntoBlock())
     * @return  array       Tag-parts/Non-tag-parts depending on input argument settings
     * @see splitIntoBlock(), splitTags()
     */
    function getAllParts($parts,$tag_parts=1,$include_tag=1)    {
        $newParts=array();
        foreach ($parts as $k => $v)    {
            if (($k+($tag_parts?0:1))%2)    {
                if (!$include_tag)  $v=$this->removeFirstAndLastTag($v);
                $newParts[]=$v;
            }
        }
        return $newParts;
    }

    /**
     * Removes the first and last tag in the string
     * Anything before the first and after the last tags respectively is also removed
     *
     * @param   string      String to process
     * @return  string
     */
    function removeFirstAndLastTag($str)    {
            // End of first tag:
        $start = strpos($str,'>');
            // Begin of last tag:
        $end = strrpos($str,'<');
            // return
        return substr($str, $start+1, $end-$start-1);
    }

    /**
     * Returns the first tag in $str
     * Actually everything from the begining of the $str is returned, so you better make sure the tag is the first thing...
     *
     * @param   string      HTML string with tags
     * @return  string
     */
    function getFirstTag($str)  {
            // First:
        $endLen = strpos($str,'>')+1;
        return substr($str,0,$endLen);
    }

    /**
     * Returns the NAME of the first tag in $str
     *
     * @param   string      HTML tag (The element name MUST be separated from the attributes by a space character! Just *whitespace* will not do)
     * @param   boolean     If set, then the tag is NOT converted to uppercase by case is preserved.
     * @return  string      Tag name in upper case
     * @see getFirstTag()
     */
    function getFirstTagName($str,$preserveCase=FALSE)  {
        $matches = array();
        if (preg_match('/^\s*\<([^\s\>]+)(\s|\>)/', $str, $matches)===1)    {
            if (!$preserveCase) {
                return strtoupper($matches[1]);
            }
            return $matches[1];
        }
        return '';
    }

    /**
     * Returns an array with all attributes as keys. Attributes are only lowercase a-z
     * If a attribute is empty (shorthand), then the value for the key is empty. You can check if it existed with isset()
     *
     * @param   string      Tag: $tag is either a whole tag (eg '<TAG OPTION ATTRIB=VALUE>') or the parameterlist (ex ' OPTION ATTRIB=VALUE>')
     * @param   boolean     If set, the attribute values are de-htmlspecialchar'ed. Should actually always be set!
     * @return  array       array(Tag attributes,Attribute meta-data)
     */
    function get_tag_attributes($tag,$deHSC=0)  {
        list($components,$metaC) = $this->split_tag_attributes($tag);
        $name = '';  // attribute name is stored here
        $valuemode = false;
        $attributes = array();
        $attributesMeta = array();
        if (is_array($components))  {
            foreach ($components as $key => $val)   {
                if ($val != '=')    {   // Only if $name is set (if there is an attribute, that waits for a value), that valuemode is enabled. This ensures that the attribute is assigned it's value
                    if ($valuemode) {
                        if ($name)  {
                            $attributes[$name] = $deHSC?t3lib_div::htmlspecialchars_decode($val):$val;
                            $attributesMeta[$name]['dashType']=$metaC[$key];
                            $name = '';
                        }
                    } else {
                        if ($namekey = preg_replace('/[^[:alnum:]_\:\-]/','',$val)) {
                            $name = strtolower($namekey);
                            $attributesMeta[$name]=array();
                            $attributesMeta[$name]['origTag']=$namekey;
                            $attributes[$name] = '';
                        }
                    }
                    $valuemode = false;
                } else {
                    $valuemode = true;
                }
            }
            return array($attributes,$attributesMeta);
        }
    }

    /**
     * Returns an array with the 'components' from an attribute list. The result is normally analyzed by get_tag_attributes
     * Removes tag-name if found
     *
     * @param   string      The tag or attributes
     * @return  array
     * @access private
     * @see t3lib_div::split_tag_attributes()
     */
    function split_tag_attributes($tag) {
        $matches = array();
        if (preg_match('/(\<[^\s]+\s+)?(.*?)\s*(\>)?$/s', $tag, $matches)!==1)  {
            return array(array(), array());
        }
        $tag_tmp = $matches[2];

        $metaValue = array();
        $value = array();
        $matches = array();
        if (preg_match_all('/("[^"]*"|\'[^\']*\'|[^\s"\'\=]+|\=)/s', $tag_tmp, $matches)>0) {
            foreach ($matches[1] as $part)  {
                $firstChar = substr($part, 0, 1);
                if ($firstChar=='"' || $firstChar=="'") {
                    $metaValue[] = $firstChar;
                    $value[] = substr($part, 1, -1);
                } else  {
                    $metaValue[] = '';
                    $value[] = $part;
                }
            }
        }
        return array($value,$metaValue);
    }

    /**
     * Checks whether block/solo tags are found in the correct amounts in HTML content
     * Block tags are tags which are required to have an equal amount of start and end tags, eg. "<table>...</table>"
     * Solo tags are tags which are required to have ONLY start tags (possibly with an XHTML ending like ".../>")
     * NOTICE: Correct XHTML might actually fail since "<br></br>" is allowed as well as "<br/>". However only the LATTER is accepted by this function (with "br" in the "solo-tag" list), the first example will result in a warning.
     * NOTICE: Correct XHTML might actually fail since "<p/>" is allowed as well as "<p></p>". However only the LATTER is accepted by this function (with "p" in the "block-tag" list), the first example will result in an ERROR!
     * NOTICE: Correct HTML version "something" allows eg. <p> and <li> to be NON-ended (implicitly ended by other tags). However this is NOT accepted by this function (with "p" and "li" in the block-tag list) and it will result in an ERROR!
     *
     * @param   string      HTML content to analyze
     * @param   string      Tag names for block tags (eg. table or div or p) in lowercase, commalist (eg. "table,div,p")
     * @param   string      Tag names for solo tags (eg. img, br or input) in lowercase, commalist ("img,br,input")
     * @return  array       Analyse data.
     */
    function checkTagTypeCounts($content,$blockTags='a,b,blockquote,body,div,em,font,form,h1,h2,h3,h4,h5,h6,i,li,map,ol,option,p,pre,select,span,strong,table,td,textarea,tr,u,ul', $soloTags='br,hr,img,input,area')   {
        $content = strtolower($content);
        $analyzedOutput=array();
        $analyzedOutput['counts']=array();  // Counts appearances of start-tags
        $analyzedOutput['errors']=array();  // Lists ERRORS
        $analyzedOutput['warnings']=array();    // Lists warnings.
        $analyzedOutput['blocks']=array();  // Lists stats for block-tags
        $analyzedOutput['solo']=array();    // Lists stats for solo-tags

            // Block tags, must have endings...
        $blockTags = explode(',',$blockTags);
        foreach($blockTags as $tagName) {
            $countBegin = count(preg_split('/\<'.$tagName.'(\s|\>)/s',$content))-1;
            $countEnd = count(preg_split('/\<\/'.$tagName.'(\s|\>)/s',$content))-1;
            $analyzedOutput['blocks'][$tagName]=array($countBegin,$countEnd,$countBegin-$countEnd);
            if ($countBegin)    $analyzedOutput['counts'][$tagName]=$countBegin;
            if ($countBegin-$countEnd)  {
                if ($countBegin-$countEnd > 0)  {
                    $analyzedOutput['errors'][$tagName]='There were more start-tags ('.$countBegin.') than end-tags ('.$countEnd.') for the element "'.$tagName.'". There should be an equal amount!';
                } else {
                    $analyzedOutput['warnings'][$tagName]='There were more end-tags ('.$countEnd.') than start-tags ('.$countBegin.') for the element "'.$tagName.'". There should be an equal amount! However the problem is not fatal.';
                }
            }
        }

            // Solo tags, must NOT have endings...
        $soloTags = explode(',',$soloTags);
        foreach($soloTags as $tagName)  {
            $countBegin = count(preg_split('/\<'.$tagName.'(\s|\>)/s',$content))-1;
            $countEnd = count(preg_split('/\<\/'.$tagName.'(\s|\>)/s',$content))-1;
            $analyzedOutput['solo'][$tagName]=array($countBegin,$countEnd);
            if ($countBegin)    $analyzedOutput['counts'][$tagName]=$countBegin;
            if ($countEnd)  {
                $analyzedOutput['warnings'][$tagName]='There were end-tags found ('.$countEnd.') for the element "'.$tagName.'". This was not expected (although XHTML technically allows it).';
            }
        }

        return $analyzedOutput;
    }












    /*********************************
     *
     * Clean HTML code
     *
     *********************************/

    /**
     * Function that can clean up HTML content according to configuration given in the $tags array.
     *
     * Initializing the $tags array to allow a list of tags (in this case <B>,<I>,<U> and <A>), set it like this:        $tags = array_flip(explode(',','b,a,i,u'))
     * If the value of the $tags[$tagname] entry is an array, advanced processing of the tags is initialized. These are the options:
     *
     *  $tags[$tagname] = Array(
     *      'overrideAttribs' => ''     If set, this string is preset as the attributes of the tag
     *      'allowedAttribs' =>   '0' (zero) = no attributes allowed, '[commalist of attributes]' = only allowed attributes. If blank, all attributes are allowed.
     *      'fixAttrib' => Array(
     *          '[attribute name]' => Array (
     *              'set' => Force the attribute value to this value.
     *              'unset' => Boolean: If set, the attribute is unset.
     *              'default' =>    If no attribute exists by this name, this value is set as default value (if this value is not blank)
     *              'always' =>     Boolean. If set, the attribute is always processed. Normally an attribute is processed only if it exists
     *              'trim,intval,lower,upper' =>    All booleans. If any of these keys are set, the value is passed through the respective PHP-functions.
     *              'range' => Array ('[low limit]','[high limit, optional]')       Setting integer range.
     *              'list' => Array ('[value1/default]','[value2]','[value3]')      Attribute must be in this list. If not, the value is set to the first element.
     *              'removeIfFalse' =>  Boolean/'blank'.    If set, then the attribute is removed if it is 'false'. If this value is set to 'blank' then the value must be a blank string (that means a 'zero' value will not be removed)
     *              'removeIfEquals' =>     [value] If the attribute value matches the value set here, then it is removed.
     *              'casesensitiveComp' => 1    If set, then the removeIfEquals and list comparisons will be case sensitive. Otherwise not.
     *          )
     *      ),
     *      'protect' => '',    Boolean. If set, the tag <> is converted to &lt; and &gt;
     *      'remap' => '',      String. If set, the tagname is remapped to this tagname
     *      'rmTagIfNoAttrib' => '',    Boolean. If set, then the tag is removed if no attributes happend to be there.
     *      'nesting' => '',    Boolean/'global'. If set true, then this tag must have starting and ending tags in the correct order. Any tags not in this order will be discarded. Thus '</B><B><I></B></I></B>' will be converted to '<B><I></B></I>'. Is the value 'global' then true nesting in relation to other tags marked for 'global' nesting control is preserved. This means that if <B> and <I> are set for global nesting then this string '</B><B><I></B></I></B>' is converted to '<B></B>'
     *  )
     *
     * @param   string      $content; is the HTML-content being processed. This is also the result being returned.
     * @param   array       $tags; is an array where each key is a tagname in lowercase. Only tags present as keys in this array are preserved. The value of the key can be an array with a vast number of options to configure.
     * @param   string      $keepAll; boolean/'protect', if set, then all tags are kept regardless of tags present as keys in $tags-array. If 'protect' then the preserved tags have their <> converted to &lt; and &gt;
     * @param   integer     $hSC; Values -1,0,1,2: Set to zero= disabled, set to 1 then the content BETWEEN tags is htmlspecialchar()'ed, set to -1 its the opposite and set to 2 the content will be HSC'ed BUT with preservation for real entities (eg. "&amp;" or "&#234;")
     * @param   array       Configuration array send along as $conf to the internal functions ->processContent() and ->processTag()
     * @return  string      Processed HTML content
     */
    function HTMLcleaner($content, $tags=array(),$keepAll=0,$hSC=0,$addConfig=array())  {
        $newContent = array();
        $tokArr = explode('<',$content);
        $newContent[] = $this->processContent(current($tokArr),$hSC,$addConfig);
        next($tokArr);

        $c = 1;
        $tagRegister = array();
        $tagStack = array();
        $inComment = false; $skipTag = false;
        while(list(,$tok)=each($tokArr))    {
            if ($inComment) {
                if (($eocPos = strpos($tok, '-->')) === false) {
                    // End of comment is not found in the token. Go futher until end of comment is found in other tokens.
                    $newContent[$c++] = '<' . $tok;
                    continue;
                }
                // Comment ends in the middle of the token: add comment and proceed with rest of the token
                $newContent[$c++] = '<' . substr($tok, 0, $eocPos + 3);
                $tok = substr($tok, $eocPos + 3);
                $inComment = false; $skipTag = true;
            }
            elseif (substr($tok, 0, 3) == '!--') {
                if (($eocPos = strpos($tok, '-->')) === false) {
                    // Comment started in this token but it does end in the same token. Set a flag to skip till the end of comment
                    $newContent[$c++] = '<' . $tok;
                    $inComment = true;
                    continue;
                }
                // Start and end of comment are both in the current token. Add comment and proceed with rest of the token
                $newContent[$c++] = '<' . substr($tok, 0, $eocPos + 3);
                $tok = substr($tok, $eocPos + 3);
                $skipTag = true;
            }
            $firstChar = substr($tok,0,1);
            if (!$skipTag && preg_match('/[[:alnum:]\/]/',$firstChar)==1)   {       // It is a tag... (first char is a-z0-9 or /) (fixed 19/01 2004). This also avoids triggering on <?xml..> and <!DOCTYPE..>
                $tagEnd = strpos($tok,'>');
                if ($tagEnd)    {   // If there is and end-bracket...   tagEnd can't be 0 as the first character can't be a >
                    $endTag = $firstChar=='/' ? 1 : 0;
                    $tagContent = substr($tok,$endTag,$tagEnd-$endTag);
                    $tagParts = preg_split('/\s+/s',$tagContent,2);
                    $tagName = strtolower($tagParts[0]);
                    if (isset($tags[$tagName])) {
                        if (is_array($tags[$tagName]))  {   // If there is processing to do for the tag:

                            if (!$endTag)   {   // If NOT an endtag, do attribute processing (added dec. 2003)
                                    // Override attributes
                                if (strcmp($tags[$tagName]['overrideAttribs'],''))  {
                                    $tagParts[1]=$tags[$tagName]['overrideAttribs'];
                                }

                                    // Allowed tags
                                if (strcmp($tags[$tagName]['allowedAttribs'],''))   {
                                    if (!strcmp($tags[$tagName]['allowedAttribs'],'0')) {   // No attribs allowed
                                        $tagParts[1]='';
                                    } elseif (trim($tagParts[1])) {
                                        $tagAttrib = $this->get_tag_attributes($tagParts[1]);
                                        $tagParts[1]='';
                                        $newTagAttrib = array();
                                        if (!($tList = $tags[$tagName]['_allowedAttribs'])) {
                                                // Just explode attribts for tag once
                                            $tList = $tags[$tagName]['_allowedAttribs'] = t3lib_div::trimExplode(',',strtolower($tags[$tagName]['allowedAttribs']),1);
                                        }
                                        foreach ($tList as $allowTag)   {
                                            if (isset($tagAttrib[0][$allowTag]))    $newTagAttrib[$allowTag]=$tagAttrib[0][$allowTag];
                                        }
                                        $tagParts[1]=$this->compileTagAttribs($newTagAttrib,$tagAttrib[1]);
                                    }
                                }

                                    // Fixed attrib values
                                if (is_array($tags[$tagName]['fixAttrib'])) {
                                    $tagAttrib = $this->get_tag_attributes($tagParts[1]);
                                    $tagParts[1]='';
                                    reset($tags[$tagName]['fixAttrib']);
                                    while(list($attr,$params)=each($tags[$tagName]['fixAttrib']))   {
                                        if (strlen($params['set'])) $tagAttrib[0][$attr] = $params['set'];
                                        if (strlen($params['unset']))   unset($tagAttrib[0][$attr]);
                                        if (strcmp($params['default'],'') && !isset($tagAttrib[0][$attr]))  $tagAttrib[0][$attr]=$params['default'];
                                        if ($params['always'] || isset($tagAttrib[0][$attr]))   {
                                            if ($params['trim'])    {$tagAttrib[0][$attr]=trim($tagAttrib[0][$attr]);}
                                            if ($params['intval'])  {$tagAttrib[0][$attr]=intval($tagAttrib[0][$attr]);}
                                            if ($params['lower'])   {$tagAttrib[0][$attr]=strtolower($tagAttrib[0][$attr]);}
                                            if ($params['upper'])   {$tagAttrib[0][$attr]=strtoupper($tagAttrib[0][$attr]);}
                                            if ($params['range'])   {
                                                if (isset($params['range'][1])) {
                                                    $tagAttrib[0][$attr]=t3lib_div::intInRange($tagAttrib[0][$attr],intval($params['range'][0]),intval($params['range'][1]));
                                                } else {
                                                    $tagAttrib[0][$attr]=t3lib_div::intInRange($tagAttrib[0][$attr],intval($params['range'][0]));
                                                }
                                            }
                                            if (is_array($params['list']))  {
                                                if (!in_array($this->caseShift($tagAttrib[0][$attr],$params['casesensitiveComp']),$this->caseShift($params['list'],$params['casesensitiveComp'],$tagName))) $tagAttrib[0][$attr]=$params['list'][0];
                                            }
                                            if (($params['removeIfFalse'] && $params['removeIfFalse']!='blank' && !$tagAttrib[0][$attr]) || ($params['removeIfFalse']=='blank' && !strcmp($tagAttrib[0][$attr],'')))    {
                                                unset($tagAttrib[0][$attr]);
                                            }
                                            if (strcmp($params['removeIfEquals'],'') && !strcmp($this->caseShift($tagAttrib[0][$attr],$params['casesensitiveComp']),$this->caseShift($params['removeIfEquals'],$params['casesensitiveComp'])))  {
                                                unset($tagAttrib[0][$attr]);
                                            }
                                            if ($params['prefixLocalAnchors'])  {
                                                if (substr($tagAttrib[0][$attr],0,1)=='#')  {
                                                    $prefix = t3lib_div::getIndpEnv('TYPO3_REQUEST_URL');
                                                    $tagAttrib[0][$attr] = $prefix.$tagAttrib[0][$attr];
                                                    if ($params['prefixLocalAnchors']==2 && t3lib_div::isFirstPartOfStr($prefix,t3lib_div::getIndpEnv('TYPO3_SITE_URL')))       {
                                                        $tagAttrib[0][$attr] = substr($tagAttrib[0][$attr],strlen(t3lib_div::getIndpEnv('TYPO3_SITE_URL')));
                                                    }
                                                }
                                            }
                                            if ($params['prefixRelPathWith'])   {
                                                $urlParts = parse_url($tagAttrib[0][$attr]);
                                                if (!$urlParts['scheme'] && substr($urlParts['path'],0,1)!='/') {   // If it is NOT an absolute URL (by http: or starting "/")
                                                    $tagAttrib[0][$attr] = $params['prefixRelPathWith'].$tagAttrib[0][$attr];
                                                }
                                            }
                                            if ($params['userFunc'])    {
                                                $tagAttrib[0][$attr] = t3lib_div::callUserFunction($params['userFunc'],$tagAttrib[0][$attr],$this);
                                            }
                                        }
                                    }
                                    $tagParts[1]=$this->compileTagAttribs($tagAttrib[0],$tagAttrib[1]);
                                }
                            } else {    // If endTag, remove any possible attributes:
                                $tagParts[1]='';
                            }

                                // Protecting the tag by converting < and > to &lt; and &gt; ??
                            if ($tags[$tagName]['protect']) {
                                $lt = '&lt;';   $gt = '&gt;';
                            } else {
                                $lt = '<';  $gt = '>';
                            }
                                // Remapping tag name?
                            if ($tags[$tagName]['remap'])   $tagParts[0] = $tags[$tagName]['remap'];

                                // rmTagIfNoAttrib
                            if ($endTag || trim($tagParts[1]) || !$tags[$tagName]['rmTagIfNoAttrib'])   {
                                $setTag=1;

                                if ($tags[$tagName]['nesting']) {
                                    if (!is_array($tagRegister[$tagName]))  $tagRegister[$tagName]=array();

                                    if ($endTag)    {
/*                                      if ($tags[$tagName]['nesting']=='global')   {
                                            $lastEl = end($tagStack);
                                            $correctTag = !strcmp($tagName,$lastEl);
                                        } else $correctTag=1;
    */
                                        $correctTag=1;
                                        if ($tags[$tagName]['nesting']=='global')   {
                                            $lastEl = end($tagStack);
                                            if (strcmp($tagName,$lastEl))   {
                                                if (in_array($tagName,$tagStack))   {
                                                    while(count($tagStack) && strcmp($tagName,$lastEl)) {
                                                        $elPos = end($tagRegister[$lastEl]);
                                                        unset($newContent[$elPos]);

                                                        array_pop($tagRegister[$lastEl]);
                                                        array_pop($tagStack);
                                                        $lastEl = end($tagStack);
                                                    }
                                                } else {
                                                    $correctTag=0;  // In this case the
                                                }
                                            }
                                        }
                                        if (!count($tagRegister[$tagName]) || !$correctTag) {
                                            $setTag=0;
                                        } else {
                                            array_pop($tagRegister[$tagName]);
                                            if ($tags[$tagName]['nesting']=='global')   {array_pop($tagStack);}
                                        }
                                    } else {
                                        array_push($tagRegister[$tagName],$c);
                                        if ($tags[$tagName]['nesting']=='global')   {array_push($tagStack,$tagName);}
                                    }
                                }

                                if ($setTag)    {
                                        // Setting the tag
                                    $newContent[$c++]=$this->processTag($lt.($endTag?'/':'').trim($tagParts[0].' '.$tagParts[1]).$gt,$addConfig,$endTag,$lt=='&lt;');
                                }
                            }
                        } else {
                            $newContent[$c++]=$this->processTag('<'.($endTag?'/':'').$tagContent.'>',$addConfig,$endTag);
                        }
                    } elseif ($keepAll) {   // This is if the tag was not defined in the array for processing:
                        if (!strcmp($keepAll,'protect'))    {
                            $lt = '&lt;';   $gt = '&gt;';
                        } else {
                            $lt = '<';  $gt = '>';
                        }
                        $newContent[$c++]=$this->processTag($lt.($endTag?'/':'').$tagContent.$gt,$addConfig,$endTag,$lt=='&lt;');
                    }
                    $newContent[$c++]=$this->processContent(substr($tok,$tagEnd+1),$hSC,$addConfig);
                } else {
                    $newContent[$c++]=$this->processContent('<'.$tok,$hSC,$addConfig);  // There were not end-bracket, so no tag...
                }
            } else {
                $newContent[$c++]=$this->processContent(($skipTag ? '' : '<') . $tok, $hSC, $addConfig);    // It was not a tag anyways
                $skipTag = false;
            }
        }

            // Unsetting tags:
        foreach ($tagRegister as $tag => $positions)    {
            foreach ($positions as $pKey)   {
                unset($newContent[$pKey]);
            }
        }

        return implode('',$newContent);
    }

    /**
     * Converts htmlspecialchars forth ($dir=1) AND back ($dir=-1)
     *
     * @param   string      Input value
     * @param   integer     Direction: forth ($dir=1, dir=2 for preserving entities) AND back ($dir=-1)
     * @return  string      Output value
     */
    function bidir_htmlspecialchars($value,$dir)    {
        if ($dir==1)    {
            $value = htmlspecialchars($value);
        } elseif ($dir==2)  {
            $value = t3lib_div::deHSCentities(htmlspecialchars($value));
        } elseif ($dir==-1) {
            $value = str_replace('&gt;','>',$value);
            $value = str_replace('&lt;','<',$value);
            $value = str_replace('&quot;','"',$value);
            $value = str_replace('&amp;','&',$value);
        }
        return $value;
    }

    /**
     * Prefixes the relative paths of hrefs/src/action in the tags [td,table,body,img,input,form,link,script,a] in the $content with the $main_prefix or and alternative given by $alternatives
     *
     * @param   string      Prefix string
     * @param   string      HTML content
     * @param   array       Array with alternative prefixes for certain of the tags. key=>value pairs where the keys are the tag element names in uppercase
     * @param   string      Suffix string (put after the resource).
     * @return  string      Processed HTML content
     */
    function prefixResourcePath($main_prefix,$content,$alternatives=array(),$suffix='') {

        $parts = $this->splitTags('embed,td,table,body,img,input,form,link,script,a',$content);
        foreach ($parts as $k => $v)    {
            if ($k%2)   {
                $params = $this->get_tag_attributes($v,1);
                $tagEnd = substr($v,-2)=='/>' ? ' />' : '>';    // Detect tag-ending so that it is re-applied correctly.
                $firstTagName = $this->getFirstTagName($v); // The 'name' of the first tag
                $somethingDone=0;
                $prefix = isset($alternatives[strtoupper($firstTagName)]) ? $alternatives[strtoupper($firstTagName)] : $main_prefix;
                switch(strtolower($firstTagName))   {
                        // background - attribute:
                    case 'td':
                    case 'body':
                    case 'table':
                        $src = $params[0]['background'];
                        if ($src)   {
                            $params[0]['background'] = $this->prefixRelPath($prefix,$params[0]['background'],$suffix);
                            $somethingDone=1;
                        }
                    break;
                        // src attribute
                    case 'img':
                    case 'input':
                    case 'script':
                    case 'embed':
                        $src = $params[0]['src'];
                        if ($src)   {
                            $params[0]['src'] = $this->prefixRelPath($prefix,$params[0]['src'],$suffix);
                            $somethingDone=1;
                        }
                    break;
                    case 'link':
                    case 'a':
                        $src = $params[0]['href'];
                        if ($src)   {
                            $params[0]['href'] = $this->prefixRelPath($prefix,$params[0]['href'],$suffix);
                            $somethingDone=1;
                        }
                    break;
                        // action attribute
                    case 'form':
                        $src = $params[0]['action'];
                        if ($src)   {
                            $params[0]['action'] = $this->prefixRelPath($prefix,$params[0]['action'],$suffix);
                            $somethingDone=1;
                        }
                    break;
                }
                if ($somethingDone) {
                    $tagParts = preg_split('/\s+/s',$v,2);
                    $tagParts[1]=$this->compileTagAttribs($params[0],$params[1]);
                    $parts[$k] = '<'.trim(strtolower($firstTagName).' '.$tagParts[1]).$tagEnd;
                }
            }
        }
        $content = implode('',$parts);

            // Fix <style> section:
        $prefix = isset($alternatives['style']) ? $alternatives['style'] : $main_prefix;
        if (strlen($prefix))    {
            $parts = $this->splitIntoBlock('style',$content);
            foreach($parts as $k => $v) {
                if ($k%2)   {
                    $parts[$k] = eregi_replace('(url[[:space:]]*\([[:space:]]*["\']?)([^"\')]*)(["\']?[[:space:]]*\))','\1'.$prefix.'\2'.$suffix.'\3',$parts[$k]);
                }
            }
            $content = implode('',$parts);
        }

        return $content;
    }

    /**
     * Internal sub-function for ->prefixResourcePath()
     *
     * @param   string      Prefix string
     * @param   string      Relative path/URL
     * @param   string      Suffix string
     * @return  string      Output path, prefixed if no scheme in input string
     * @access private
     */
    function prefixRelPath($prefix,$srcVal,$suffix='')  {
        $pU = parse_url($srcVal);
        if (!$pU['scheme'] && substr($srcVal, 0, 1)!='/')   { // If not an absolute URL.
            $srcVal = $prefix.$srcVal.$suffix;
        }
        return $srcVal;
    }

    /**
     * Cleans up the input $value for fonttags.
     * If keepFace,-Size and -Color is set then font-tags with an allowed property is kept. Else deleted.
     *
     * @param   string      HTML content with font-tags inside to clean up.
     * @param   boolean     If set, keep "face" attribute
     * @param   boolean     If set, keep "size" attribute
     * @param   boolean     If set, keep "color" attribute
     * @return  string      Processed HTML content
     */
    function cleanFontTags($value,$keepFace=0,$keepSize=0,$keepColor=0) {
        $fontSplit = $this->splitIntoBlock('font',$value);  // ,1 ?? - could probably be more stable if splitTags() was used since this depends on end-tags being properly set!
        foreach ($fontSplit as $k => $v)    {
            if ($k%2)   {   // font:
                $attribArray=$this->get_tag_attributes_classic($this->getFirstTag($v));
                $newAttribs=array();
                if ($keepFace && $attribArray['face'])  $newAttribs[]='face="'.$attribArray['face'].'"';
                if ($keepSize && $attribArray['size'])  $newAttribs[]='size="'.$attribArray['size'].'"';
                if ($keepColor && $attribArray['color'])    $newAttribs[]='color="'.$attribArray['color'].'"';

                $innerContent = $this->cleanFontTags($this->removeFirstAndLastTag($v),$keepFace,$keepSize,$keepColor);
                if (count($newAttribs)) {
                    $fontSplit[$k]='<font '.implode(' ',$newAttribs).'>'.$innerContent.'</font>';
                } else {
                    $fontSplit[$k]=$innerContent;
                }
            }
        }
        return implode('',$fontSplit);
    }

    /**
     * This is used to map certain tag-names into other names.
     *
     * @param   string      HTML content
     * @param   array       Array with tag key=>value pairs where key is from-tag and value is to-tag
     * @param   string      Alternative less-than char to search for (search regex string)
     * @param   string      Alternative less-than char to replace with (replace regex string)
     * @return  string      Processed HTML content
     */
    function mapTags($value,$tags=array(),$ltChar='<',$ltChar2='<') {

        foreach($tags as $from => $to)  {
            $value = preg_replace('/'.preg_quote($ltChar).'(\/)?'.$from.'\s([^\>])*(\/)?\>/', $ltChar2.'$1'.$to.' $2$3>', $value);
        }
        return $value;
    }

    /**
     * This converts htmlspecialchar()'ed tags (from $tagList) back to real tags. Eg. '&lt;strong&gt' would be converted back to '<strong>' if found in $tagList
     *
     * @param   string      HTML content
     * @param   string      Tag list, separated by comma. Lowercase!
     * @return  string      Processed HTML content
     */
    function unprotectTags($content,$tagList='')    {
        $tagsArray = t3lib_div::trimExplode(',',$tagList,1);
        $contentParts = explode('&lt;',$content);
        next($contentParts);    // bypass the first
        while(list($k,$tok)=each($contentParts))    {
            $firstChar = substr($tok,0,1);
            if (strcmp(trim($firstChar),''))    {
                $subparts = explode('&gt;',$tok,2);
                $tagEnd = strlen($subparts[0]);
                if (strlen($tok)!=$tagEnd)  {
                    $endTag = $firstChar=='/' ? 1 : 0;
                    $tagContent = substr($tok,$endTag,$tagEnd-$endTag);
                    $tagParts = preg_split('/\s+/s',$tagContent,2);
                    $tagName = strtolower($tagParts[0]);
                    if (!strcmp($tagList,'') || in_array($tagName,$tagsArray))  {
                        $contentParts[$k] = '<'.$subparts[0].'>'.$subparts[1];
                    } else $contentParts[$k] = '&lt;'.$tok;
                } else $contentParts[$k] = '&lt;'.$tok;
            } else $contentParts[$k] = '&lt;'.$tok;
        }

        return implode('',$contentParts);
    }

    /**
     * Strips tags except the tags in the list, $tagList
     * OBSOLETE - use PHP function strip_tags()
     *
     * @param   string      Value to process
     * @param   string      List of tags
     * @return  string      Output value
     * @ignore
     */
    function stripTagsExcept($value,$tagList)   {
        $tags=t3lib_div::trimExplode(',',$tagList,1);
        $forthArr=array();
        $backArr=array();
        foreach ($tags as $theTag)  {
            $forthArr[$theTag]=md5($theTag);
            $backArr[md5($theTag)]=$theTag;
        }
        $value = $this->mapTags($value,$forthArr,'<','_');
        $value=strip_tags($value);
        $value = $this->mapTags($value,$backArr,'_','<');
        return $value;
    }