217       $line = $this->filter_message($line);

   220   }

   221   

   222   /**

   223   * Parse bold (<b>...</b>) tags and color tags in a text into IRC speak, and process /me commands. Colors are <cyan>...</cyan>, specify background with <fg:bg>...</fgcolor:bgcolor>. Valid colors are white, black, navy, green, red, maroon, purple, orange, yellow, lime, teal, aqua, cyan, blue, pink, grey, and silver

   224    * @param string Text to filter

   225    * @return string

   226    */

   227   

   228   function filter_message($text)

   229   {

   230     $text = preg_replace('#<b>(.*?)</b>#is', "\x02$1\x02", $text);

   231     if ( preg_match('#^/me #i', $text) )

   232     {

   233       $text = "\x01ACTION " . preg_replace('#^/me #i', '', $text) . "\x01";

   234     }

   235     $supportedcolors = array('white', 'black', 'navy', 'green', 'red', 'maroon', 'purple', 'orange', 'yellow', 'lime', 'teal', 'cyan', 'blue', 'pink', 'grey', 'silver');

   236     $colors = implode('|', $supportedcolors);

   237     $supportedcolors = array_flip($supportedcolors);

   238     preg_match_all("#<((?:$colors)(?::(?:$colors))?)>(.*?)</\\1>#is", $text, $matches);

   239     foreach ( $matches[0] as $i => $match )

   240     {

   241       preg_match("#<(?:($colors)(?::($colors))?)>#i", $match, $colordata);

   242       $fgcolor = $supportedcolors[$colordata[1]];

   243       $bgcolor = $colordata[1] ? $supportedcolors[$colordata[2]] : '';

   244       $fgcolor = ( $fgcolor < 10 ) ? "0$fgcolor" : "$fgcolor";

   245       if ( is_int($bgcolor) )

   246         $bgcolor = ( $bgcolor < 10 ) ? ",0$bgcolor" : ",$bgcolor";

   247       $text = str_replace($match, "\x03{$fgcolor}{$bgcolor}{$matches[2][$i]}\x03", $text);

   248     }

   249     

   250     return $text;