There are a lot of improvements that can be made to this piece of code and when I will get some time I will move forward with the changes. Until then I will post here the source code as it is still small and developers new to the world of regular expressions may learn something from it.
1: <?xml version="1.0" encoding="utf-8"?>
2: <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
3: xmlns:s="library://ns.adobe.com/flex/spark" pageTitle="Flex Regular Expressions"
4: xmlns:mx="library://ns.adobe.com/flex/halo" height="400"
5: viewSourceURL="srcview/index.html" creationComplete="init()">
6:
7: <s:layout>
8: <s:BasicLayout/>
9: </s:layout>
10:
11: <fx:Script>
12: <![CDATA[
13: import mx.skins.spark.ButtonSkin;
14: private var error:String;
15:
16: protected function test_btn_clickHandler(event:MouseEvent):void
17: {
18: var restr:String = regexpInput.text;
19: var input:String = textInput.text;
20: var igstr:String = modifInput.text;
21:
22: this.error = null;
23:
24: if(restr != null && restr != '' && input != null && input != '') {
25: var myPattern:RegExp = new RegExp(restr, igstr);
26:
27: var result:Object = myPattern.exec(input);
28:
29: var a:String = '';
30: var b:String = '<br />';
31: var index:int = 0;
32:
33: while (result != null) {
34: // copy string from last match
35: a += '<span>' + encode(input.substring(index, result.index)) + '</span>';
36: index = result.index;
37:
38: // copy the matching parts
39: a += '<span color="#339933">' + encode(result[0]) + '</span>'
40: index += result[0].length;
41:
42: // create the trace string
43: b += '<br /> ' + result.index + '\t';
44: for(var i:int = 0; i<result.length; i++) {
45: b += result[i] + ',';
46: }
47:
48: if(igstr.indexOf('g') == -1) {
49: a+= input.substr(index);
50: break;
51: }
52: result = myPattern.exec(input);
53: }
54:
55: a += '';
56: resultText.content = a + b;
57: }
58: }
59:
60: protected function encode(string:String):String {
61: var htmlString:String = string.replace(/\n/g, "<br />");
62:
63: return htmlString;
64: }
65: ]]>
66: </fx:Script>
67:
68: <s:Panel id="contentPane" width="100%" height="100%" left="0"
69: title="Flex Regular Expressions" >
70:
71: <s:TextArea left="10" right="10" height="150" top="10"
72: text="She sells seashells by the seashore" id="textInput" />
73: <s:TextInput text="(\w*)sh(\w*)" id="regexpInput" left="10" top="168" right="175"/>
74: <s:TextInput id="modifInput" text="ig" right="85" top="168" width="78"/>
75: <s:Button label="test" id="test_btn" right="10" top="168"
76: click="test_btn_clickHandler(event)"/>
77: <s:TextArea id="resultText" left="10" right="10" top="198" bottom="10"/>
78: </s:Panel>
79:
80: </s:Application>
