topical media & game development

topical media & game development

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

actionscript-book-WikiEditor-com-example-programmingas3-wikiEditor-URLParser.ax

actionscript-book-WikiEditor-com-example-programmingas3-wikiEditor-URLParser.ax [swf] flex


  package //com.example.programmingas3.wikiEditor 
  {

A utility class that converts URL strings, such as "http://example.com" to HTML anchor links, such as "<a href='http://example.com'>http://example.com>.


  
          public class @ax-actionscript-book-WikiEditor-com-example-programmingas3-wikiEditor-URLParser
          {

Converts HTTP and FTP URLs to anchor links. This function assembles a RegExp pattern out of multiple parts: protocol, urlPart, and optionalUrlPart.


  
                  public static function urlToATag(input:String):String {

Matches either http:// or ftp://. (?: indicates that the interior group is not a capturing group.


  
                          var protocol:String = "((?:http|ftp)://)";

For the URL http://foo.example.com/foo, matches foo.example.


  
                          var urlPart:String = "([a-z0-9_-]+\.[a-z0-9_-]+)";

For the URL http://example.com/foo, matches example.


  
                          var optionalUrlPart:String = "(\.[a-z0-9_-]*)";

Assembles the pattern from its component parts.


  
                          var urlPattern:RegExp = new RegExp (protocol + urlPart + optionalUrlPart, "ig");

Replaces matching URL strings with a replacement string. The call to the replace() method uses references to captured groups (such as $1) to assemble the replacement string.


  
                          var result:String = input.replace(urlPattern, "<a href='12$3'><u>12$3</u></a>");

Next, find e-mail patterns and replace them with <a> hyperlinks.


  
                          result = emailToATag(result); 
                          return result;
                  }

Replaces an e-mail pattern with a corresponding HTML anchor hyperlink. Like the urlToATag() method, this method assembles a regular expression out of constituent parts.


  
                  public static function emailToATag(input:String):String {

Isolates the mailto: part of the string.


  
                          var protocol:String = "(mailto:)";

Matches the name and @ symbol, such as bob.fooman@.


  
                          var name:String = "([a-z0-9_-]+(?:\.[a-z0-9_-])*@)";

For the e-mail pattern bob.fooman@mail.example.com, matches mail.example. (including the trailing dot).


  
                          var domain:String = "((?:[a-z0-9_-].)*)";

Matches the superdomain, such as com, uk, or org., which is 2 - 4 letters.


  
                          var superDomain:String = "([a-z]{2,4})";

Assembles the matching regular expression out of constituent parts.


  
                          var emailPattern:RegExp = new RegExp (protocol + name + domain + superDomain, "ig");

Replaces matching e-mail strings with a replacement string. The call to the replace() method uses references to captured groups (such as $1) to assemble the replacement string.


  
                          var result:String = input.replace(emailPattern, "<a href='1234'><u>1234</u></a>"); 
  
                          return result;
                  }
          }
  }

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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