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Strip HTML tags from RSS

/ Published in: ActionScript 3
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  1. public static function stripHtmlTags(html:String, tags:String = ""):String
  2. {
  3.     var tagsToBeKept:Array = new Array();
  4.     if (tags.length > 0)
  5.         tagsToBeKept = tags.split(new RegExp("\\s*,\\s*"));
  6.  
  7.     var tagsToKeep:Array = new Array();
  8.     for (var i:int = 0; i < tagsToBeKept.length; i++)
  9.     {
  10.         if (tagsToBeKept[i] != null && tagsToBeKept[i] != "")
  11.             tagsToKeep.push(tagsToBeKept[i]);
  12.     }
  13.  
  14.     var toBeRemoved:Array = new Array();
  15.     var tagRegExp:RegExp = new RegExp("<([^>\\s]+)(\\s[^>]+)*>", "g");
  16.  
  17.     var foundedStrings:Array = html.match(tagRegExp);
  18.     for (i = 0; i < foundedStrings.length; i++) 
  19.     {
  20.         var tagFlag:Boolean = false;
  21.         if (tagsToKeep != null) 
  22.         {
  23.             for (var j:int = 0; j < tagsToKeep.length; j++)
  24.             {
  25.                 var tmpRegExp:RegExp = new RegExp("<\/?" + tagsToKeep[j] + "( [^<>]*)*>", "i");
  26.                 var tmpStr:String = foundedStrings[i] as String;
  27.                 if (tmpStr.search(tmpRegExp) != -1) 
  28.                     tagFlag = true;
  29.             }
  30.         }
  31.         if (!tagFlag)
  32.             toBeRemoved.push(foundedStrings[i]);
  33.     }
  34.     for (i = 0; i < toBeRemoved.length; i++) 
  35.     {
  36.         var tmpRE:RegExp = new RegExp("([\+\*\$\/])","g");
  37.         var tmpRemRE:RegExp = new RegExp((toBeRemoved[i] as String).replace(tmpRE, "\\$1"),"g");
  38.         html = html.replace(tmpRemRE, "");
  39.     } 
  40.     return html;
  41. }

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