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Determine File Extension

/ Published in: ActionScript 3
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Works great for parsing links in XML documents and arrays.

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  1. // Use an XML object or an Array. This array is just an example
  2. var _arrLinks:Array = ["testfiletype.txt", "http://www.domain.com/", "something.fdz", "another-file.rtf", "www.somedomain.com", "domain.com"];
  3. var _fileExt:String;
  4. var _strTmp:String;
  5. for (var i:uint = 0; i < _arrLinks.length; i++)
  6. {
  7. 	_strTmp = _arrLinks[i];
  8. 	_fileExt = _strTmp.substr(0, 4);
  9.  
  10. 	if (_fileExt == "www.") _fileExt = "www";
  11. 	else if (_fileExt != "http") _fileExt = _strTmp.substr(_strTmp.lastIndexOf('.') + 1, _strTmp.length);
  12.  
  13. 	switch (_fileExt)
  14. 	{
  15. 		case "swf":
  16. 			trace("This is a SWF file: " + _strTmp);
  17. 			break;
  18. 		case "txt":
  19. 			trace("This is a TXT file: " + _strTmp);
  20. 			break;
  21. 		case "http":
  22. 			trace("This is an HTTP link: " + _strTmp);
  23. 			break;
  24. 		case "www":
  25. 			trace("This is a WWW link, convert to an HTTP link: http://" + _strTmp);
  26. 			break;
  27. 		case "com":
  28. 			trace("This is a dot com link, convert to an HTTP link: http://" + _strTmp);
  29. 			break;
  30. 		default:
  31. 			trace("Unrecognized link or file extension. Please add (" + _fileExt + ") to the switch statment or change your filename.");
  32. 			break;
  33. 	}
  34. }

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