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Current File : /var/www/html/clients/rebirth.e-nk.ru/sources/lib/post_parser.php

<?php

/*
+--------------------------------------------------------------------------
|   Invision Power Board
|   =============================================
|   by Matthew Mecham
|   (c) 2001 - 2006 Invision Power Services, Inc.
|   Nullified by Terabyte
|   =============================================
|   
|   
+---------------------------------------------------------------------------
|   > $Date: 2006-09-22 06:28:54 -0400 (Fri, 22 Sep 2006) $
|   > $Revision: 567 $
|   > $Author: matt $
+---------------------------------------------------------------------------
|
|   > Text processor module
|   > Module written by Matt Mecham
|   > Official Version: 2.0 - Number of changes to date 3 billion (estimated)
|   > DBA Checked: Mon 24th May 2004
|
+--------------------------------------------------------------------------
*/

if ( ! defined( 'IN_IPB' ) )
{
	print "<h1>Incorrect access</h1>You cannot access this file directly. If you have recently upgraded, make sure you upgraded 'admin.php'.";
	exit();
}

class post_parser {

	var $error            = "";
	var $image_count      = 0;
	var $emoticon_count   = 0;
	var $quote_html       = array();
	var $quote_open       = 0;
	var $quote_closed     = 0;
	var $quote_error      = 0;
	var $emoticons        = "";
	var $badwords         = "";
	var $strip_quotes     = "";
	var $in_sig           = "";
	var $allow_unicode    = 1;
	var $bypass_badwords  = 0;
	var $load_custom_tags = 0;
	var $pp_do_html       = 0;
	var $pp_nl2br         = 1;
	var $pp_wordwrap      = 0;
	var $max_embed_quotes = 10;
	
	/*-------------------------------------------------------------------------*/
	// CONSTRUCTOR
	/*-------------------------------------------------------------------------*/
	
	function post_parser($load=0)
	{
		$this->strip_quotes = $ibforums->vars['strip_quotes'];
		
		if ( $load )
		{
			$this->check_caches($load);
		}
	}
	
	/*-------------------------------------------------------------------------*/
	// CHECK (AND LOAD) CACHES
	/*-------------------------------------------------------------------------*/
	
	function check_caches($load=0)
	{
		global $ibforums, $std, $DB;
		$load=0;
		if ( ! is_array( $ibforums->cache['emoticons'] ) )
		{
			$ibforums->cache['emoticons'] = array();
			
			$DB->simple_construct( array( 'select' => 'typed,image,clickable,emo_set', 'from' => 'emoticons' ) );
			$DB->simple_exec();
		
			while ( $r = $DB->fetch_row() )
			{
				$ibforums->cache['emoticons'][] = $r;
			}
			
			usort( $ibforums->cache['emoticons'] , array( 'post_parser', 'smilie_length_sort' ) );
			
			if ( $load )
			{
				$std->update_cache( array( 'name' => 'emoticons', 'array' => 1, 'deletefirst' => 1 ) );
			}
		}
		
		if ( ! is_array( $ibforums->cache['bbcode'] ) )
		{
			$ibforums->cache['bbcode'] = array();
			
			$DB->simple_construct( array( 'select' => 'bbcode_id, bbcode_tag, bbcode_replace, bbcode_useoption', 'from' => 'custom_bbcode' ) );
			$bbcode = $DB->simple_exec();
		
			while ( $r = $DB->fetch_row($bbcode) )
			{
				$ibforums->cache['bbcode'][] = $r;
			}
			
			if ( $load )
			{
				$std->update_cache( array( 'name' => 'bbcode', 'array' => 1, 'deletefirst' => 1 ) );
			}
		}
		
		if ( ! is_array( $ibforums->cache['badwords'] ) )
		{
			$ibforums->cache['badwords'] = array();
			
			$DB->simple_construct( array( 'select' => 'type,swop,m_exact', 'from' => 'badwords' ) );
			$bbcode = $DB->simple_exec();
		
			while ( $r = $DB->fetch_row($bbcode) )
			{
				$ibforums->cache['badwords'][] = $r;
			}
			
			usort( $ibforums->cache['emoticons'] , array( 'post_parser', 'word_length_sort' ) );
			
			if ( $load )
			{
				$std->update_cache( array( 'name' => 'badwords', 'array' => 1, 'deletefirst' => 1 ) );
			}
		}
	}
	
	/*-------------------------------------------------------------------------*/
	// Strip quote tags
	/*-------------------------------------------------------------------------*/
	
	function strip_quote_tags( $txt="" )
	{
		return preg_replace( "#\[QUOTE(=.+?,.+?)?\].+?\[/QUOTE\]#is", "", $txt );
	}
	
	/*-------------------------------------------------------------------------*/
	// strip all tags
	/*-------------------------------------------------------------------------*/
	
	function strip_all_tags( $txt="" )
	{
		$txt = $this->strip_quote_tags( $this->unconvert( $txt ) );
		
		$txt = preg_replace( "#\[.+?\](.+?)\[/.+?\]#is", "\\1", $txt );
		
		return $txt;
	}
	
	/*-------------------------------------------------------------------------*/
	// strip all tags to formatted HTML
	/*-------------------------------------------------------------------------*/
	
	function strip_all_tags_to_formatted( $txt="" )
	{
		//$txt = $this->strip_quote_tags( $this->unconvert( $txt ) );
		
		//$txt = preg_replace( "#\[CODE\](.+?)\[/CODE\]#is", "<pre>\\1</pre>", $txt );
		
		//$txt = preg_replace( "#\[LIST\](.+?)\[/LIST\]#eis", "'<ul>' .str_replace( '[*]', '<li>', nl2br('\\1') ).'</ul>';", $txt );
		
		//$txt = preg_replace( "#\[LIST=.+?\](.+?)\[/LIST\]#eis", "'<ul>' .str_replace( '[*]', '<li>', nl2br('\\1') ).'</ul>';", $txt );
		
		//$txt = preg_replace( "#\[.+?\](.+?)\[/.+?\]#is", "\\1", $txt );
		
		return $txt;
	}
	
	/*-------------------------------------------------------------------------*/
	// PARSE POLL TAGS
	// Converts certain code tags for polling
	/*-------------------------------------------------------------------------*/
	
	function parse_poll_tags($txt)
	{
	
		// if you want to parse more tags for polls, simply cut n' paste from the "convert" routine
		// anywhere here.
	
		$txt = preg_replace( "#\[img\](.+?)\[/img\]#ie" , "\$this->regex_check_image('\\1')", $txt );
		
		$txt = preg_replace( "#\[url\](\S+?)\[/url\]#ie"                                       , "\$this->regex_build_url(array('html' => '\\1', 'show' => '\\1'))", $txt );
		$txt = preg_replace( "#\[url\s*=\s*\&quot\;\s*(\S+?)\s*\&quot\;\s*\](.*?)\[\/url\]#ie" , "\$this->regex_build_url(array('html' => '\\1', 'show' => '\\2'))", $txt );
		$txt = preg_replace( "#\[url\s*=\s*(\S+?)\s*\](.*?)\[\/url\]#ie"                       , "\$this->regex_build_url(array('html' => '\\1', 'show' => '\\2'))", $txt );
	
		return $txt;
	}
	
	/*-------------------------------------------------------------------------*/
	// convert:
	// Parses raw text into smilies, HTML and iB CODE
	/*-------------------------------------------------------------------------*/

	function convert($in=array( 'TEXT' => "", 'SMILIES' => 0, 'CODE' => 0, 'SIGNATURE' => 0, 'HTML' => 0))
	{
		global $ibforums, $DB;
		
		$this->check_caches();
		
		$this->in_sig = $in['SIGNATURE'];
		
		$txt = $in['TEXT'];
		
		//-----------------------------------------
		// Returns any errors as $this->error
		//-----------------------------------------
		
		// Remove session id's from any post
		
		$txt = preg_replace( "#(\?|&amp;|;|&)s=([0-9a-zA-Z]){32}(&amp;|;|&|$)?#e", "\$this->regex_bash_session('\\1', '\\3')", $txt );
		
		//-----------------------------------------
		// convert <br> to \n
		//-----------------------------------------
		
		$txt = preg_replace( "/<br>|<br \/>/", "\n", $txt );
		
		//-----------------------------------------
		// Are we parsing iB_CODE and do we have either '[' or ']' in the
		// text we are processing?
		//-----------------------------------------
		
		if ( $in['CODE'] == 1 )
		{
			//-----------------------------------------
			// Do [CODE] tag
			//-----------------------------------------
			
			$txt = preg_replace( "#\[code\](.+?)\[/code\]#ies", "\$this->regex_code_tag( '\\1' )", $txt );
		
			//-----------------------------------------
			// Auto parse URLs
			//-----------------------------------------
			
			$txt = preg_replace( "#(^|\s)((http|https|news|ftp)://\w+[^\s\[\]]+)#ie"  , "\$this->regex_build_url(array('html' => '\\2', 'show' => '\\2', 'st' => '\\1'))", $txt );
		
			//-----------------------------------------
			// Do [QUOTE(name,date)] tags
			//-----------------------------------------
			
			// Find the first, and last quote tag (greedy match)...
			
			$txt = preg_replace( "#(\[quote(.+?)?\].*\[/quote\])#ies" , "\$this->regex_parse_quotes('\\1')"  , $txt );
			
			/*-------------------------------------------------------------------------*/
			// If we are not parsing a siggie, lets have a bash
			// at the [PHP] [SQL] and [HTML] tags.
			/*-------------------------------------------------------------------------*/
			
			if ($in['SIGNATURE'] != 1) {
				
				$txt = preg_replace( "#\[sql\](.+?)\[/sql\]#ies"    , "\$this->regex_sql_tag('\\1')"    , $txt );
				$txt = preg_replace( "#\[html\](.+?)\[/html\]#ies"  , "\$this->regex_html_tag('\\1')"   , $txt );
				
				//-----------------------------------------
				// [LIST]    [*]    [/LIST]
				//-----------------------------------------
				
				while( preg_match( "#\n?\[list\](.+?)\[/list\]\n?#ies" , $txt ) )
				{
					$txt = preg_replace( "#\n?\[list\](.+?)\[/list\]\n?#ies", "\$this->regex_list('\\1')" , $txt );
				}
				
				while( preg_match( "#\n?\[list=(a|A|i|I|1)\](.+?)\[/list\]\n?#ies" , $txt ) )
				{
					$txt = preg_replace( "#\n?\[list=(a|A|i|I|1)\](.+?)\[/list\]\n?#ies", "\$this->regex_list('\\2','\\1')" , $txt );
				}
			}
			 
			//-----------------------------------------
			// Do [IMG] [FLASH] tags
			//-----------------------------------------
			
			if ($ibforums->vars['allow_images'])
			{
				$txt = preg_replace( "#\[img\](.+?)\[/img\]#ie"                             , "\$this->regex_check_image('\\1')"          , $txt );
				$txt = preg_replace( "#(\[flash=)(\S+?)(\,)(\S+?)(\])(\S+?)(\[\/flash\])#ie", "\$this->regex_check_flash('\\2','\\4','\\6')", $txt );
			}
		
		
			// Start off with the easy stuff
			
			$txt = preg_replace( "#\[b\](.+?)\[/b\]#is", "<b>\\1</b>", $txt );
			$txt = preg_replace( "#\[i\](.+?)\[/i\]#is", "<i>\\1</i>", $txt );
			$txt = preg_replace( "#\[u\](.+?)\[/u\]#is", "<u>\\1</u>", $txt );
			$txt = preg_replace( "#\[s\](.+?)\[/s\]#is", "<s>\\1</s>", $txt );
			
			// (c) (r) and (tm)
			
			$txt = preg_replace( "#\(c\)#i"     , "&copy;" , $txt );
			$txt = preg_replace( "#\(tm\)#i"    , "&#153;" , $txt );
			$txt = preg_replace( "#\(r\)#i"     , "&reg;"  , $txt );
			
			// email tags
			// [email]matt@index.com[/email]   [email=matt@index.com]Email me[/email]
			
			$txt = preg_replace( "#\[email\](\S+?)\[/email\]#i"                                                                , "<a href='mailto:\\1'>\\1</a>", $txt );
			$txt = preg_replace( "#\[email\s*=\s*\&quot\;([\.\w\-]+\@[\.\w\-]+\.[\.\w\-]+)\s*\&quot\;\s*\](.*?)\[\/email\]#i"  , "<a href='mailto:\\1'>\\2</a>", $txt );
			$txt = preg_replace( "#\[email\s*=\s*([\.\w\-]+\@[\.\w\-]+\.[\w\-]+)\s*\](.*?)\[\/email\]#i"                       , "<a href='mailto:\\1'>\\2</a>", $txt );
			
			// url tags
			// [url]http://www.index.com[/url]   [url=http://www.index.com]ibforums![/url]
			
			$txt = preg_replace( "#\[url\](\S+?)\[/url\]#ie"                                       , "\$this->regex_build_url(array('html' => '\\1', 'show' => '\\1'))", $txt );
			$txt = preg_replace( "#\[url\s*=\s*\&quot\;\s*(\S+?)\s*\&quot\;\s*\](.*?)\[\/url\]#ie" , "\$this->regex_build_url(array('html' => '\\1', 'show' => '\\2'))", $txt );
			$txt = preg_replace( "#\[url\s*=\s*(\S+?)\s*\](.*?)\[\/url\]#ie"                       , "\$this->regex_build_url(array('html' => '\\1', 'show' => '\\2'))", $txt );
			
			
			// font size, colour and font style
			// [font=courier]Text here[/font]  [size=6]Text here[/size]  [color=red]Text here[/color]
			
			while ( preg_match( "#\[size=([^\]]+)\](.+?)\[/size\]#ies", $txt ) )
			{
				$txt = preg_replace( "#\[size=([^\]]+)\](.+?)\[/size\]#ies"    , "\$this->regex_font_attr(array('s'=>'size','1'=>'\\1','2'=>'\\2'))", $txt );
			}
			
			while ( preg_match( "#\[font=([^\]]+)\](.*?)\[/font\]#ies", $txt ) )
			{
				$txt = preg_replace( "#\[font=([^\]]+)\](.*?)\[/font\]#ies"    , "\$this->regex_font_attr(array('s'=>'font','1'=>'\\1','2'=>'\\2'))", $txt );
			}
			
			while( preg_match( "#\[color=([^\]]+)\](.+?)\[/color\]#ies", $txt ) )
			{
				$txt = preg_replace( "#\[color=([^\]]+)\](.+?)\[/color\]#ies"  , "\$this->regex_font_attr(array('s'=>'col' ,'1'=>'\\1','2'=>'\\2'))", $txt );
			}
			
			
		}
		
		// Swop \n back to <br>
		
		$txt = preg_replace( "/\n/", "<br />", $txt );
		
		// Unicode?
		
		if ( $this->allow_unicode )
		{
			$txt = preg_replace("/&amp;#([0-9]+);/s", "&#\\1;", $txt );
		}
		
		//-----------------------------------------
		// Parse smilies (disallow smilies in siggies, or we'll have to query the DB for each post
		// and each signature when viewing a topic, not something that we really want to do.
		//-----------------------------------------
		
		if ($in['SMILIES'] != 0 and $in['SIGNATURE'] == 0)
		{
			$txt = ' '.$txt.' ';
		
			usort( $ibforums->cache['emoticons'] , array( 'post_parser', 'smilie_length_sort' ) );
			
			if ( count( $ibforums->cache['emoticons'] ) > 0 )
			{
				foreach( $ibforums->cache['emoticons']  as $a_id => $row)
				{
					if ( $row['emo_set'] != $this->ipsclass->skin['_emodir'] )
					{
						continue;
					}
					
					$code  = $row['typed'];
					$image = $row['image'];
					
					//-----------------------------------------
					// Make safe for regex
					//-----------------------------------------
					
					$code = preg_quote($code, "/");
					
					$txt = preg_replace( "!(?<=[^\w&;/])$code(?=.\W|\W.|\W$)!ei", "\$this->convert_emoticon('$code', '$image')", $txt );
				}
			}
			
			$txt = trim($txt);
			
			if ( $ibforums->vars['max_emos'] )
			{
				if ($this->emoticon_count > $ibforums->vars['max_emos'])
				{
					$this->error = 'too_many_emoticons';
				}
			}
		}
		
		$txt = $this->bad_words($txt);
		
		$txt = $this->bbcode_check($txt);
		
		return $txt;
	}
	
	//-----------------------------------------
	// Checks opening and closing bbtags - doesn't parse at this point
	//-----------------------------------------
	
	function bbcode_check($t="")
	{
		global $ibforums, $DB, $std;
		
		$count = array();
		
		foreach( $ibforums->cache['bbcode'] as $i => $r )
		{
			if ( $r['bbcode_useoption'] )
			{
				$count[ $r['bbcode_id'] ]['open']      = substr_count( strtolower($t), '['.strtolower($r['bbcode_tag']).'=' );
				$count[ $r['bbcode_id'] ]['wrongopen'] = substr_count( strtolower($t), '['.strtolower($r['bbcode_tag']).']' );
			}
			else
			{
				$count[ $r['bbcode_id'] ]['open']      = substr_count( strtolower($t), '['.strtolower($r['bbcode_tag']).']' );
				$count[ $r['bbcode_id'] ]['wrongopen'] = substr_count( strtolower($t), '['.strtolower($r['bbcode_tag']).'=' );
			}
			
			$count[ $r['bbcode_id'] ]['closed'] = substr_count( strtolower($t), '[/'.strtolower($r['bbcode_tag']).']' );
			
			//-----------------------------------------
			// check...
			//-----------------------------------------
			
			if ( $count[ $r['bbcode_id'] ]['open'] != $count[ $r['bbcode_id'] ]['closed'] )
			{
				if ( $count[ $r['bbcode_id'] ]['wrongopen'] == $count[ $r['bbcode_id'] ]['closed'] )
				{
					$this->error = 'custom_tags_incorrect2';
				}
				else
				{
					$this->error = 'custom_tags_incorrect';
				}
			}
		}
		
		return $t;
	}
	
	//-----------------------------------------
	// My strip-tags. Converts HTML entities back before strippin' em
	//-----------------------------------------
	
	function my_strip_tags($t="")
	{
		$t = str_replace( '&gt;', '>', $t );
		$t = str_replace( '&lt;', '<', $t );
		
		$t = strip_tags($t);
		
		// Make sure nothing naughty is left...
		
		$t = str_replace( '<', '&lt;', $t );
		$t = str_replace( '>', '&gt;', $t );
		
		return $t;
	}
		
	
	//-----------------------------------------
	// Word wrap, wraps 'da word innit
	//-----------------------------------------
	
	function my_wordwrap($t="", $chrs=0, $replace="<br />")
	{
		if ( $t == "" )
		{
			return $t;
		}
		
		if ( $chrs < 1 )
		{
			return $t;
		}
		
		$t = preg_replace("#([^\s<>'\"/\.\\-\?&\n\r\%]{".$chrs."})#i", " \\1".$replace ,$t);
		
		return $t;
		
	}
	
	//-----------------------------------------
	// Post DB parse tags
	//-----------------------------------------
	
	function post_db_parse($t="")
	{
		global $ibforums, $DB;
		
		if ( $this->pp_do_html )
		{
			$t = $this->post_db_parse_html( $t );
		}
		else
		{
			//$t = $this->my_strip_tags( $t );
		}
		
		if ( $this->pp_wordwrap > 0 )
		{
			$t = $this->my_wordwrap( $t, $this->pp_wordwrap );
		}
		
		//-----------------------------------------
		// Custom BB code
		//-----------------------------------------
		
		if ( strstr( $t, '[/' )  )
		{ 
			$t = $this->post_db_parse_bbcode($t);
		}
		
		return $t;
	}
	
	//-----------------------------------------
	// Post DB parse BBCode
	//-----------------------------------------
	
	function post_db_parse_bbcode($t="")
	{
		global $ibforums, $DB, $std;
		
		if ( is_array( $ibforums->cache['bbcode'] ) and count( $ibforums->cache['bbcode'] ) )
		{
			foreach( $ibforums->cache['bbcode'] as $i => $row )
			{
				if ( substr_count( $row['bbcode_replace'], '{content}' ) > 1 )
				{
					//-----------------------------------------
					// Slightly slower
					//-----------------------------------------
					
					if ( $row['bbcode_useoption'] )
					{
						preg_match_all( "#(\[".preg_quote($row['bbcode_tag'], '#' )."=(?:&quot;|&\#39;)?(.+?)(?:&quot;|&\#39;)?\])(.+?)(\[/".preg_quote($row['bbcode_tag'], '#' )."\])#si", $t, $match );
						
						for ($i=0; $i < count($match[0]); $i++)
						{
							$tmp = $row['bbcode_replace'];
							$tmp = str_replace( '{option}' , $match[2][$i], $tmp );
							$tmp = str_replace( '{content}', $match[3][$i], $tmp );
							$t   = str_replace( $match[0][$i], $tmp, $t );
						}
					}
					else
					{
						preg_match_all( "#(\[".preg_quote($row['bbcode_tag'], '#' )."\])(.+?)(\[/".preg_quote($row['bbcode_tag'], '#' )."\])#si", $t, $match );
	
						for ($i=0; $i < count($match[0]); $i++)
						{
							$tmp = $row['bbcode_replace'];
							$tmp = str_replace( '{content}', $match[2][$i], $tmp );
							$t   = str_replace( $match[0][$i], $tmp, $t );
						}
					}
				}
				else
				{
					$replace = explode( '{content}', $row['bbcode_replace'] );
					
					if ( $row['bbcode_useoption'] )
					{
						$t = preg_replace( "#\[".$row['bbcode_tag']."=(?:&quot;|&\#39;)?(.+?)(?:&quot;|&\#39;)?\]#si", str_replace( '{option}', "\\1", $replace[0] ), $t );
					}
					else
					{
						$t = preg_replace( '#\['.$row['bbcode_tag'].'\]#i' , $replace[0], $t );
					}
					
					$t = preg_replace( '#\[/'.$row['bbcode_tag'].'\]#i', $replace[1], $t );
				}
			}
		}
		
		return $t;
	}
	
	//-----------------------------------------
	// parse_html
	// Converts the doHTML tag
	//-----------------------------------------
	
	function post_db_parse_html($t="")
	{
		if ( $t == "" )
		{
			return $t;
		}
		
		//-----------------------------------------
		// Remove <br>s 'cos we know they can't
		// be user inputted, 'cos they are still
		// &lt;br&gt; at this point :)
		//-----------------------------------------
		
		if ( $this->pp_nl2br != 1 )
		{
			$t = str_replace( "<br>"    , "\n" , $t );
			$t = str_replace( "<br />"  , "\n" , $t );
		}
		
		$t = str_replace( "&#39;"   , "'", $t );
		$t = str_replace( "&#33;"   , "!", $t );
		$t = str_replace( "&#036;"   , "$", $t );
		$t = str_replace( "&#124;"  , "|", $t );
		$t = str_replace( "&amp;"   , "&", $t );
		$t = str_replace( "&gt;"    , ">", $t );
		$t = str_replace( "&lt;"    , "<", $t );
		$t = str_replace( "&quot;"  , '"', $t );
		
		//-----------------------------------------
		// Take a crack at parsing some of the nasties
		// NOTE: THIS IS NOT DESIGNED AS A FOOLPROOF METHOD
		// AND SHOULD NOT BE RELIED UPON!
		//-----------------------------------------
		
		$t = preg_replace( "/javascript/i" , "j&#097;v&#097;script", $t );
		$t = preg_replace( "/alert/i"      , "&#097;lert"          , $t );
		$t = preg_replace( "/about:/i"     , "&#097;bout:"         , $t );
		$t = preg_replace( "/onmouseover/i", "&#111;nmouseover"    , $t );
		$t = preg_replace( "/onclick/i"    , "&#111;nclick"        , $t );
		$t = preg_replace( "/onload/i"     , "&#111;nload"         , $t );
		$t = preg_replace( "/onsubmit/i"   , "&#111;nsubmit"       , $t );
		
		return $t;
	}
	
	
	//-----------------------------------------
	// Badwords:
	// Swops naughty, naugty words and stuff
	//-----------------------------------------
	
	function bad_words($text = "")
	{
		global $DB, $ibforums;
		
		if ($text == "")
		{
			return "";
		}
		
		if ( $this->bypass_badwords == 1 )
		{
			return $text;
		}
		
		//-----------------------------------------
		
		if ( is_array( $ibforums->cache['badwords'] ) )
		{
			usort( $ibforums->cache['badwords'] , array( 'post_parser', 'word_length_sort' ) );
			
			if ( count($ibforums->cache['badwords']) > 0 )
			{
				foreach($ibforums->cache['badwords'] as $idx => $r)
				{
				
					if ($r['swop'] == "")
					{
						$replace = '######';
					}
					else
					{
						$replace = $r['swop'];
					}
					
					//-----------------------------------------
					
					$r['type'] = preg_quote($r['type'], "/");
					
					//-----------------------------------------
				
					if ($r['m_exact'] == 1)
					{
						$text = preg_replace( "/(^|\b)".$r['type']."(\b|!|\?|\.|,|$)/i", "$replace", $text );
					}
					else
					{
						$text = preg_replace( "/".$r['type']."/i", "$replace", $text );
					}
				}
			}
		}
		
		return $text;
		
	}
	
	
	/*-------------------------------------------------------------------------*/
	// unconvert:
	// Parses the HTML back into plain text
	/*-------------------------------------------------------------------------*/
		
	function unconvert($txt="", $code=1, $html=0) {
	
		$txt = preg_replace( "#<!--emo&(.+?)-->.+?<!--endemo-->#", "\\1" , $txt );
		
		if ($code == 1)
		{
			$txt = preg_replace( "#<!--sql-->(.+?)<!--sql1-->(.+?)<!--sql2-->(.+?)<!--sql3-->#eis"    , "\$this->unconvert_sql(\"\\2\")", $txt);
			$txt = preg_replace( "#<!--html-->(.+?)<!--html1-->(.+?)<!--html2-->(.+?)<!--html3-->#e", "\$this->unconvert_htm(\"\\2\")", $txt);
		
			$txt = preg_replace( "#<!--Flash (.+?)-->.+?<!--End Flash-->#e"  , "\$this->unconvert_flash('\\1')", $txt );
			$txt = preg_replace( "#<img src=[\"'](\S+?)['\"].+?".">#"           , "\[img\]\\1\[/img\]"            , $txt );
			
			$txt = preg_replace( "#<a href=[\"']mailto:(.+?)['\"]>(.+?)</a>#"                         , "\[email=\\1\]\\2\[/email\]"   , $txt );
			$txt = preg_replace( "#<a href=[\"'](http://|https://|ftp://|news://)?(\S+?)['\"].+?".">(.+?)</a>#" , "\[url=\\1\\2\]\\3\[/url\]"  , $txt );
			
			$txt = preg_replace( "#<!--QuoteBegin-->(.+?)<!--QuoteEBegin-->#"                , '[quote]'         , $txt );
			$txt = preg_replace( "#<!--QuoteBegin-{1,2}([^>]+?)\+([^>]+?)-->(.+?)<!--QuoteEBegin-->#"  , "[quote=\\1,\\2]" , $txt );
			$txt = preg_replace( "#<!--QuoteBegin-{1,2}([^>]+?)\+-->(.+?)<!--QuoteEBegin-->#"       , "[quote=\\1]" , $txt );
			
			$txt = preg_replace( "#<!--QuoteEnd-->(.+?)<!--QuoteEEnd-->#"                    , '[/quote]'        , $txt );
			
			$txt = preg_replace( "#<!--c1-->(.+?)<!--ec1-->#", '[code]'   , $txt );
			$txt = preg_replace( "#<!--c2-->(.+?)<!--ec2-->#", '[/code]'  , $txt );
			
			$txt = preg_replace( "#<i>(.+?)</i>#is"  , "\[i\]\\1\[/i\]"  , $txt );
			$txt = preg_replace( "#<b>(.+?)</b>#is"  , "\[b\]\\1\[/b\]"  , $txt );
			$txt = preg_replace( "#<s>(.+?)</s>#is"  , "\[s\]\\1\[/s\]"  , $txt );
			$txt = preg_replace( "#<u>(.+?)</u>#is"  , "\[u\]\\1\[/u\]"  , $txt );
			
			$txt = preg_replace( "#(\n){0,}<ul>#" , "\\1\[list\]"  , $txt );
			$txt = preg_replace( "#(\n){0,}<ol type='(a|A|i|I|1)'>#" , "\\1\[list=\\2\]\n"  , $txt );
			$txt = preg_replace( "#(\n){0,}<li>#" , "\n\[*\]"     , $txt );
			$txt = preg_replace( "#(\n){0,}</ul>(\n){0,}#", "\n\[/list\]\\2" , $txt );
			$txt = preg_replace( "#(\n){0,}</ol>(\n){0,}#", "\n\[/list\]\\2" , $txt );
			
			while ( preg_match( "#<span style=['\"]font-size:(.+?)pt;line-height:100%['\"]>(.+?)</span>#is", $txt ) )
			{
				$txt = preg_replace( "#<span style=['\"]font-size:(.+?)pt;line-height:100%['\"]>(.+?)</span>#ise" , "\$this->unconvert_size('\\1', '\\2')", $txt );
			}
			
			while ( preg_match( "#<span style=['\"]color:(.+?)['\"]>(.+?)</span>#is", $txt ) )
			{
				$txt = preg_replace( "#<span style=['\"]color:(.+?)['\"]>(.+?)</span>#is"    , "\[color=\\1\]\\2\[/color\]", $txt );
			}
			
			while ( preg_match( "#<span style=['\"]font-family:(.+?)['\"]>(.+?)</span>#is", $txt ) )
			{
				$txt = preg_replace( "#<span style=['\"]font-family:(.+?)['\"]>(.+?)</span>#is", "\[font=\\1\]\\2\[/font\]", $txt );
			}
			
			// Tidy up the end quote stuff
			
			$txt = preg_replace( "#(\[/QUOTE\])\s*?<br />\s*#si", "\\1\n", $txt );
			$txt = preg_replace( "#(\[/QUOTE\])\s*?<br>\s*#si"  , "\\1\n", $txt );
			
			$txt = preg_replace( "#<!--EDIT\|.+?\|.+?-->#" , "" , $txt );
			
			$txt = str_replace( "</li>", "", $txt );
			
			$txt = str_replace( "&#153;", "(tm)", $txt );
		}

		if ($html == 1)
		{
			$txt = str_replace( "&#39;", "'", $txt);
		}
		
		$txt = str_replace( "<br>"  , "\n", $txt );
		$txt = str_replace( "<br />", "\n", $txt );
		
		
		return trim(stripslashes($txt));
	}
	
//-----------------------------------------
//+-----------------------------------------------------------------------------------------
// UNCONVERT FUNCTIONS
//+-----------------------------------------------------------------------------------------
//+-----------------------------------------------------------------------------------------

	function unconvert_size($size="", $text="")
	{
		
		$size -= 7;
		
		return '[size='.$size.']'.$text.'[/size]';
		
	}

	function unconvert_flash($flash="")
	{
	
		$f_arr = explode( "+", $flash );
		
		return '[flash='.$f_arr[0].','.$f_arr[1].']'.$f_arr[2].'[/flash]';
		
	}
	
	function unconvert_sql($sql="")
	{
		$sql = stripslashes($sql);
		
		$sql = preg_replace( "#<span style='.+?'>#is", "", $sql );
		$sql = str_replace( "</span>"                , "", $sql );
		$sql = preg_replace( "#\s*$#"                , "", $sql );
		
		return '[sql]'.$sql.'[/sql]';
		
	}

	function unconvert_htm($html="")
	{
		$html = stripslashes($html);
		
		$html = preg_replace( "#<span style='.+?'>#is", "", $html );
		$html = str_replace( "</span>"                , "", $html );
		$html = preg_replace( "#\s*$#"                , "", $html );
		
		return '[html]'.$html.'[/html]';
		
	}
	
	
//-----------------------------------------
//+-----------------------------------------------------------------------------------------
// CONVERT FUNCTIONS
//+-----------------------------------------------------------------------------------------
//+-----------------------------------------------------------------------------------------

	/*-------------------------------------------------------------------------*/
	// convert_emoticon:
	// replaces the text with the emoticon image
	/*-------------------------------------------------------------------------*/
	
	function convert_emoticon($code="", $image="")
	{
		global $ibforums;
		
		if (!$code or !$image) return;
		
		//-----------------------------------------
		// Remove slashes added by preg_quote
		//-----------------------------------------
		
		$code = stripslashes($code);
		
		$this->emoticon_count++;
		
		return "<!--emo&".trim($code)."--><img src='{$ibforums->vars['EMOTICONS_URL']}/$image' border='0' style='vertical-align:middle' alt='$image' /><!--endemo-->";
	}
	
	/*-------------------------------------------------------------------------*/
	// wrap style:
	// code and quote table HTML generator
	/*-------------------------------------------------------------------------*/
	
	function wrap_style( $type='quote', $extra="" )
	{
		global $ibforums;
		
		$used = array(
					   'quote' => array( 'title' => 'QUOTE', 'css_top' => 'quotetop' , 'css_main' => 'quotemain' ),
					   'code'  => array( 'title' => 'CODE' , 'css_top' => 'codetop'  , 'css_main' => 'codemain'  ),
					   'sql'   => array( 'title' => 'SQL'  , 'css_top' => 'sqltop'   , 'css_main' => 'sqlmain'   ),
					   'html'  => array( 'title' => 'HTML' , 'css_top' => 'htmltop'  , 'css_main' => 'htmlmain'  )
					 );
		
		
		return array( 'START' => "<div class='{$used[ $type ]['css_top']}'>{$used[ $type ]['title']}{$extra}</div><div class='{$used[ $type ]['css_main']}'>",
					  'END'   => "</div>"
					);
	}


	/*-------------------------------------------------------------------------*/
	// regex_list: List generation
	// 
	/*-------------------------------------------------------------------------*/
	
	function regex_list( $txt="", $type="" )
	{
		if ($txt == "")
		{
			return;
		}
		
		if ( $type == "" )
		{
			// Unordered list.
			
			return "<ul>".$this->regex_list_item($txt)."</ul>";
		}
		else
		{
			return "<ol type='$type'>".$this->regex_list_item($txt)."</ol>";
		}
	}
	
	function regex_list_item($txt)
	{
		$txt = preg_replace( "#\[\*\]#", "</li><li>" , trim($txt) );
		
		$txt = preg_replace( "#^</?li>#"  , "", $txt );
		
		return str_replace( "\n</li>", "</li>", $txt."</li>" );
	}
			
		
	
	/*-------------------------------------------------------------------------*/
	// regex_html_tag: HTML syntax highlighting
	// 
	/*-------------------------------------------------------------------------*/
	
	function regex_html_tag($html="") {
	
		if ($html == "") return;
		
		//-----------------------------------------
		// Too many embedded code/quote/html/sql tags can crash Opera and Moz
		//-----------------------------------------
		
		if (preg_match( "/\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\]/i", $html) )
		{
			return $default;
		}
				
		//-----------------------------------------
		// Take a stab at removing most of the common
		// smilie characters.
		//-----------------------------------------
		
		$html = preg_replace( "#:#"      , "&#58;", $html );
		$html = preg_replace( "#\[#"     , "&#91;", $html );
		$html = preg_replace( "#\]#"     , "&#93;", $html );
		$html = preg_replace( "#\)#"     , "&#41;", $html );
		$html = preg_replace( "#\(#"     , "&#40;", $html );
		
		$html = preg_replace( "/^<br>/"  , "", $html );
		$html = preg_replace( "#^<br />#", "", $html );
		$html = preg_replace( "/^\s+/"   , "", $html );
		
		$html = preg_replace( "#&lt;([^&<>]+)&gt;#"                           , "&lt;<span style='color:blue'>\\1</span>&gt;"        , $html );   //Matches <tag>
		$html = preg_replace( "#&lt;([^&<>]+)=#"                              , "&lt;<span style='color:blue'>\\1</span>="           , $html );   //Matches <tag
		$html = preg_replace( "#&lt;/([^&]+)&gt;#"                            , "&lt;/<span style='color:blue'>\\1</span>&gt;"       , $html );   //Matches </tag>
		$html = preg_replace( "!=(&quot;|&#39;)(.+?)?(&quot;|&#39;)(\s|&gt;)!" , "=\\1<span style='color:orange'>\\2</span>\\3\\4"    , $html );   //Matches ='this'
		$html = preg_replace( "!&#60;&#33;--(.+?)--&#62;!"                    , "&lt;&#33;<span style='color:red'>--\\1--</span>&gt;", $html );
		
		$wrap = $this->wrap_style( 'html' );
		
		return "<!--html-->{$wrap['START']}<!--html1-->$html<!--html2-->{$wrap['END']}<!--html3-->";
	}
		
	/*-------------------------------------------------------------------------*/
	// regex_sql_tag: SQL syntax highlighting
	// 
	/*-------------------------------------------------------------------------*/
	
	function regex_sql_tag($sql="") {
		
		if ($sql == "") return;
		
		//-----------------------------------------
		// Too many embedded code/quote/html/sql tags can crash Opera and Moz
		//-----------------------------------------
		
		if (preg_match( "/\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\]/i", $sql) ) {
			return $default;
		}
		
		//-----------------------------------------	
		// Knock off any preceeding newlines (which have
		// since been converted into <br>)
		//-----------------------------------------
		
		$sql = preg_replace( "/^<br>/"  , "", $sql );
		$sql = preg_replace( "#^<br />#", "", $sql );
		$sql = preg_replace( "/^\s+/"   , "", $sql );
		
		//-----------------------------------------
		// Make certain regex work..
		//-----------------------------------------
		
		if (! preg_match( "/\s+$/" , $sql) )
		{
			$sql = $sql.' ';
		}
		
		$sql = preg_replace( "#(=|\+|\-|&gt;|&lt;|~|==|\!=|LIKE|NOT LIKE|REGEXP)#i"            , "<span style='color:orange'>\\1</span>", $sql );
		$sql = preg_replace( "#(MAX|AVG|SUM|COUNT|MIN)\(#i"                                    , "<span style='color:blue'>\\1</span>("    , $sql );
	    $sql = preg_replace( "!(&quot;|&#39;|&#039;)(.+?)(&quot;|&#39;|&#039;)!i"              , "<span style='color:red'>\\1\\2\\3</span>" , $sql );
	    $sql = preg_replace( "#\s{1,}(AND|OR)\s{1,}#i"                                         , " <span style='color:blue'>\\1</span> "    , $sql );
	    $sql = preg_replace( "#(LEFT|JOIN|WHERE|MODIFY|CHANGE|AS|DISTINCT|IN|ASC|DESC|ORDER BY)\s{1,}#i" , "<span style='color:green'>\\1</span> "   , $sql );
	    $sql = preg_replace( "#LIMIT\s*(\d+)\s*,\s*(\d+)#i"                                    , "<span style='color:green'>LIMIT</span> <span style='color:orange'>\\1, \\2</span>" , $sql );
	    $sql = preg_replace( "#(FROM|INTO)\s{1,}(\S+?)\s{1,}#i"                                , "<span style='color:green'>\\1</span> <span style='color:orange'>\\2</span> ", $sql );
	    $sql = preg_replace( "#(SELECT|INSERT|UPDATE|DELETE|ALTER TABLE|DROP)#i"               , "<span style='color:blue;font-weight:bold'>\\1</span>" , $sql );
	    
	    $html = $this->wrap_style( 'sql' );
	    
	    return "<!--sql-->{$html['START']}<!--sql1-->{$sql}<!--sql2-->{$html['END']}<!--sql3-->";
	 }
	
	/*-------------------------------------------------------------------------*/
	// regex_code_tag: Builds this code tag HTML
	// 
	/*-------------------------------------------------------------------------*/
	
	function regex_code_tag($txt="")
	{
		global $ibforums;
		
		$default = "\[code\]$txt\[/code\]";
		
		if ($txt == "") return;
		
		//-----------------------------------------
		// Too many embedded code/quote/html/sql tags can crash Opera and Moz
		//-----------------------------------------
		
		if (preg_match( "/\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\].+?\[(quote|code|html|sql)\]/i", $txt) ) {
			return $default;
		}
		
		//-----------------------------------------
		// Take a stab at removing most of the common
		// smilie characters.
		//-----------------------------------------
		
		//$txt = str_replace( "&" , "&amp;", $txt );
		$txt = preg_replace( "#&lt;#"   , "&#60;", $txt );
		$txt = preg_replace( "#&gt;#"   , "&#62;", $txt );
		$txt = preg_replace( "#&quot;#" , "&#34;", $txt );
		$txt = preg_replace( "#:#"      , "&#58;", $txt );
		$txt = preg_replace( "#\[#"     , "&#91;", $txt );
		$txt = preg_replace( "#\]#"     , "&#93;", $txt );
		$txt = preg_replace( "#\)#"     , "&#41;", $txt );
		$txt = preg_replace( "#\(#"     , "&#40;", $txt );
		$txt = preg_replace( "#\r#"     , "<br />", $txt );
		$txt = preg_replace( "#\n#"     , "<br />", $txt );
		$txt = preg_replace( "#\s{1};#" , "&#59;", $txt );
		
		//-----------------------------------------
		// Ensure that spacing is preserved
		//-----------------------------------------
		
		$txt = preg_replace( "#\s{2}#", " &nbsp;", $txt );
		
		$html = $this->wrap_style( 'code' );
		
		return "<!--c1-->{$html['START']}<!--ec1-->$txt<!--c2-->{$html['END']}<!--ec2-->";
		
	}
	
	/*-------------------------------------------------------------------------*/
	// regex_parse_quotes: Builds this quote tag HTML
	// [QUOTE] .. [/QUOTE] - allows for embedded quotes
	/*-------------------------------------------------------------------------*/
	
	function regex_parse_quotes($the_txt="") {
		
		if ($the_txt == "") return;
		
		$txt = $the_txt;
		
		if ( substr_count( strtolower($txt), '[quote' ) > $this->max_embed_quotes )
		{
			return $txt;
		}
		
		$txt = str_replace( chr(173).']', '&#93;', $txt );
		
		$this->quote_html = $this->wrap_style('quote');
		
		$txt = preg_replace( "#\[quote\]#ie"                        , "\$this->regex_simple_quote_tag()"       , $txt );
		$txt = preg_replace( "#\[quote=([^\],]+?),([^\]]+?)\]#ie"   , "\$this->regex_quote_tag('\\1', '\\2')"  , $txt );
		$txt = preg_replace( "#\[quote=([^\]]+?)\]#ie"              , "\$this->regex_quote_tag('\\1', '')"     , $txt );
		$txt = preg_replace( "#\[/quote\]#ie"                       , "\$this->regex_close_quote()"            , $txt );
		
		$txt = str_replace( "\n", "<br />", $txt );
		
		if ( ($this->quote_open == $this->quote_closed) and ($this->quote_error == 0) )
		{
			$txt = preg_replace( "#(<!--QuoteEBegin-->.+?<!--QuoteEnd-->)#es", "\$this->regex_preserve_spacing('\\1')", trim($txt) );
			
			return $txt;
		}
		else
		{
			return $the_txt;
		}
		
	}
	
	/*-------------------------------------------------------------------------*/
	// regex_preserve_spacing: keeps double spaces
	// without CSS killing <pre> tags
	/*-------------------------------------------------------------------------*/
	
	function regex_preserve_spacing($txt="")
	{
		$txt = preg_replace( "#^<!--QuoteEBegin-->(?:<br>|<br />)#", "<!--QuoteEBegin-->", trim($txt) );
		
		$txt = preg_replace( "#\s{2}#", "&nbsp; ", $txt );
		return $txt;
	}
	
	/*-------------------------------------------------------------------------*/
	// regex_simple_quote_tag: Builds this quote tag HTML
	// [QUOTE] .. [/QUOTE]
	/*-------------------------------------------------------------------------*/
	
	function regex_simple_quote_tag()
	{
		global $ibforums;
		
		$this->quote_open++;

		return "<!--QuoteBegin-->{$this->quote_html['START']}<!--QuoteEBegin-->";
	}
	
	/*-------------------------------------------------------------------------*/
	// regex_close_quote: closes a quote tag
	// 
	/*-------------------------------------------------------------------------*/
	
	function regex_close_quote() {
	
		if ($this->quote_open == 0)
		{
			$this->quote_error++;
		 	return;
		}
		 
		$this->quote_closed++;
		 
		return "<!--QuoteEnd-->{$this->quote_html['END']}<!--QuoteEEnd-->";
	}
	
	/*-------------------------------------------------------------------------*/
	// regex_quote_tag: Builds this quote tag HTML
	// [QUOTE=Matthew,14 February 2002]
	/*-------------------------------------------------------------------------*/
	
	function regex_quote_tag($name="", $date="")
	{
		global $ibforums;
		
		if ( $date != "" )
		{
			$default = "\[quote=$name,$date\]";
		}
		else
		{
			$default = "\[quote=$name\]";
		}
		
		if ( strstr( $name, '<!--c1-->' ) or strstr( $date, '<!--c1-->' ) )
		{
			//-----------------------------------------
			// Code tag detected...
			//-----------------------------------------
			
			$this->quote_error++;
		 	return $default;
		}
		
		$name = str_replace( "+", "&#043;", $name );
		$name = str_replace( "-", "&#045;", $name );
		$name = str_replace( '[', "&#091;", $name );
		$name = str_replace( ']', "&#093;", $name );
		
		$this->quote_open++;
	
		if ($date == "")
		{
			$html = $this->wrap_style( 'quote', "($name)");
		}
		else
		{
			$html = $this->wrap_style( 'quote', "($name &#064; $date)" );
		}
		
		$extra = "-".$name.'+'.$date;
		
		return "<!--QuoteBegin".$extra."-->{$html['START']}<!--QuoteEBegin-->";
		
	}		
	
	/*-------------------------------------------------------------------------*/
	// regex_check_flash: Checks, and builds the <object>
	// html.
	/*-------------------------------------------------------------------------*/
	
	function regex_check_flash($width="", $height="", $url="")
	{
		global $ibforums;
		
		$default = "\[flash=$width,$height\]$url\[/flash\]";
		
		if (!$ibforums->vars['allow_flash']) {
			return $default;
		}
		
		if ($width > $ibforums->vars['max_w_flash']) {
			$this->error = 'flash_too_big';
			return $default;
		}
		
		if ($height > $ibforums->vars['max_h_flash']) {
			$this->error = 'flash_too_big';
			return $default;
		}
		
		if (!preg_match( "/^http:\/\/(\S+)\.swf$/i", $url) ) {
			$this->error = 'flash_url';
			return $default;
		}
		
		return "<!--Flash $width+$height+$url--><OBJECT CLASSID='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' WIDTH=$width HEIGHT=$height><PARAM NAME=MOVIE VALUE=$url><PARAM NAME=PLAY VALUE=TRUE><PARAM NAME=LOOP VALUE=TRUE><PARAM NAME=QUALITY VALUE=HIGH><EMBED SRC=$url WIDTH=$width HEIGHT=$height PLAY=TRUE LOOP=TRUE QUALITY=HIGH></EMBED></OBJECT><!--End Flash-->";
	}
	
	/*-------------------------------------------------------------------------*/
	// regex_check_image: Checks, and builds the <img>
	// html.
	/*-------------------------------------------------------------------------*/
	
	function regex_check_image($url="")
	{
		global $ibforums;
		
		if (!$url) return;
		
		$url = trim($url);
		
		$default = "[img]".$url."[/img]";
		
		++$this->image_count;
		
		//-----------------------------------------
		// Make sure we've not overriden the set image # limit
		//-----------------------------------------
		
		if ($ibforums->vars['max_images'])
		{
			if ($this->image_count > $ibforums->vars['max_images'])
			{
				$this->error = 'too_many_img';
				return $default;
			}
		}
		
		//-----------------------------------------
		// Are they attempting to post a dynamic image, or JS?
		//-----------------------------------------
		
		if ($ibforums->vars['allow_dynamic_img'] != 1)
		{
			if (preg_match( "/[?&;]/", $url))
			{
				$this->error = 'no_dynamic';
				return $default;
			}
			if (preg_match( "/javascript(\:|\s)/i", $url ))
			{
				$this->error = 'no_dynamic';
				return $default;
			}
		}
		
		//-----------------------------------------
		// Is the img extension allowed to be posted?
		//-----------------------------------------
		
		if ($ibforums->vars['img_ext'])
		{
			$extension = preg_replace( "#^.*\.(\S+)$#", "\\1", $url );
			
			$extension = strtolower($extension);
			
			if ( (! $extension) OR ( preg_match( "#/#", $extension ) ) )
			{
				$this->error = 'invalid_ext';
				return $default;
			}
			
			$ibforums->vars['img_ext'] = strtolower($ibforums->vars['img_ext']);
			
			if ( ! preg_match( "/".preg_quote($extension, '/')."(,|$)/", $ibforums->vars['img_ext'] ))
			{
				$this->error = 'invalid_ext';
				return $default;
			}
		}
		
		//-----------------------------------------
		// Is it a legitimate image?
		//-----------------------------------------
		
		if (!preg_match( "/^(http|https|ftp):\/\//i", $url )) {
			$this->error = 'no_dynamic';
			return $default;
		}
		
		//-----------------------------------------
		// If we are still here....
		//-----------------------------------------
		
		$url = str_replace( " ", "%20", $url );
		
		return "<img src='$url' border='0' alt='user posted image' />";
	}
		
	
    /*-------------------------------------------------------------------------*/
	// regex_font_attr:
	// Returns a string for an /e regexp based on the input
	/*-------------------------------------------------------------------------*/
	
	function regex_font_attr($IN)
	{
		if (!is_array($IN)) return "";
		
		//-----------------------------------------
		// Trim out stoopid 1337 stuff
		// [color=black;font-size:500pt;border:orange 50in solid;]hehe[/color]
		//-----------------------------------------
		
		if ( preg_match( "/;/", $IN['1'] ) )
		{
			$attr = explode( ";", $IN['1'] );
			
			$IN['1'] = $attr[0];
		}
		
		$IN['1'] = preg_replace( "/[&\(\)\.\%\[\]<>]/", "", $IN['1'] );
		
		if ($IN['s'] == 'size')
		{
			$IN['1'] = intval($IN['1']) + 7;
			
			if ($IN['1'] > 30)
			{
				$IN['1'] = 30;
			}
			
			return "<span style='font-size:".$IN['1']."pt;line-height:100%'>".$IN['2']."</span>";
		}
		else if ($IN['s'] == 'col')
		{
			$IN[1] = preg_replace( "/[^\d\w\#\s]/s", "", $IN[1] );
			return "<span style='color:".$IN[1]."'>".$IN['2']."</span>";
		}
		else if ($IN['s'] == 'font')
		{
			$IN['1'] = preg_replace( "/[^\d\w\#\-\_\s]/s", "", $IN['1'] );
			return "<span style='font-family:".$IN['1']."'>".$IN['2']."</span>";
		}
	}
	
	/*-------------------------------------------------------------------------*/
	// regex_build_url: Checks, and builds the a href
	// html
	/*-------------------------------------------------------------------------*/
	
	function regex_build_url($url=array())
	{
		$skip_it = 0;
		
		//-----------------------------------------
		// Make sure the last character isn't punctuation..
		// if it is, remove it and add it to the
		// end array
		//-----------------------------------------
		
		if ( preg_match( "/([\.,\?]|&#33;)$/", $url['html'], $match) )
		{
			$url['end'] .= $match[1];
			$url['html'] = preg_replace( "/([\.,\?]|&#33;)$/", "", $url['html'] );
			$url['show'] = preg_replace( "/([\.,\?]|&#33;)$/", "", $url['show'] );
		}
		
		//-----------------------------------------
		// Make sure it's not being used in a
		// closing code/quote/html or sql block
		//-----------------------------------------
		
		if (preg_match( "/\[\/(html|quote|code|sql)/i", $url['html']) )
		{
			return $url['html'];
		}
		
		//-----------------------------------------
		// clean up the ampersands / brackets
		//-----------------------------------------
		
		$url['html'] = str_replace( "&amp;" , "&"   , $url['html'] );
		$url['html'] = str_replace( "["     , "%5b" , $url['html'] );
		$url['html'] = str_replace( "]"     , "%5d" , $url['html'] );
		
		//-----------------------------------------
		// Make sure we don't have a JS link
		//-----------------------------------------
		
		$url['html'] = preg_replace( "/javascript:/i", "java script&#58; ", $url['html'] );
		
		//-----------------------------------------
		// Do we have http:// at the front?
		//-----------------------------------------
		
		if ( ! preg_match("#^(http|news|https|ftp|aim)://#", $url['html'] ) )
		{
			$url['html'] = 'http://'.$url['html'];
		}
		
		//-----------------------------------------
		// Tidy up the viewable URL
		//-----------------------------------------

		if (preg_match( "/^<img src/i", $url['show'] )) $skip_it = 1;

		$url['show'] = preg_replace( "/&amp;/" , "&" , $url['show'] );
		$url['show'] = preg_replace( "/javascript:/i", "javascript&#58; ", $url['show'] );
		
		if ( (strlen($url['show']) -58 ) < 3 )  $skip_it = 1;
		
		//-----------------------------------------
		// Make sure it's a "proper" url
		//-----------------------------------------
		
		if (!preg_match( "/^(http|ftp|https|news):\/\//i", $url['show'] )) $skip_it = 1;
		
		$show     = $url['show'];
		
		if ($skip_it != 1)
		{
			$stripped = preg_replace( "#^(http|ftp|https|news)://(\S+)$#i", "\\2", $url['show'] );
			$uri_type = preg_replace( "#^(http|ftp|https|news)://(\S+)$#i", "\\1", $url['show'] );
			
			$show = $uri_type.'://'.substr( $stripped , 0, 35 ).'...'.substr( $stripped , -15   );
		}
		
		return $url['st'] . "<a href='".$url['html']."' target='_blank'>".$show."</a>" . $url['end'];
		
	}
	
	function regex_bash_session($start_tok, $end_tok)
	{
		//-----------------------------------------
		// Case 1: index.php?s=0000        :: Return nothing (parses: index.php)
		// Case 2: index.php?s=0000&this=1 :: Return ?       (parses: index.php?this=1)
		// Case 3: index.php?this=1&s=0000 :: Return nothing (parses: index.php?this=1)
		// Case 4: index.php?t=1&s=00&y=2  :: Return &       (parses: index.php?t=1&y=2)
		//-----------------------------------------
		
		$start_tok = str_replace( '&amp;', '&', $start_tok );
		$end_tok   = str_replace( '&amp;', '&', $end_tok   );
		
		//1:
		if ($start_tok == '?' and $end_tok == '')
		{
			return "";
		}
		//2:
		else if ($start_tok == '?' and $end_tok == '&')
		{
			return '?';
		}
		//3:
		else if ($start_tok == '&' and $end_tok == '')
		{
			return "";
		}
		else if ($start_tok == '&' and $end_tok == '&')
		{
			return "&";
		}
		else
		{
			return $start_tok.$end_tok;
		}
	
	}
	
	function smilie_length_sort($a, $b)
	{
		if ( strlen($a['typed']) == strlen($b['typed']) )
		{
			return 0;
		}
		return ( strlen($a['typed']) > strlen($b['typed']) ) ? -1 : 1;
	}
	
	
	function word_length_sort($a, $b)
	{
		if ( strlen($a['type']) == strlen($b['type']) )
		{
			return 0;
		}
		return ( strlen($a['type']) > strlen($b['type']) ) ? -1 : 1;
	}
	
}



?>