如何使用 ActionScript 3 链接文本 [英] How do I linkify text using ActionScript 3

问题描述

我有一个要链接的文本(识别 URL 并将它们转换为 HTML 链接).文本可以是多行的，并且可以包含多个 url，如下例所示.

I have a text that I want to linkify (identify URLs and convert them to HTML links). The text could be multi-line, and could contain multiple urls like the example below.

我当前的动作脚本代码如下

My current actionscript code looks like this

<mx:Script>
    <![CDATA[

    import mx.controls.Alert;
    import mx.rpc.events.FaultEvent;      
    import mx.rpc.events.ResultEvent;


    private function init():void {
        var str:String = "@stack the website for google is http://www.google.com and gmail is http://gmail.com";

        //Alert.show(linkify(str),"Error");
        txtStatus.htmlText = linkify(str);
    }

     private function linkify(texty:String):String {
        //return texty.replace("/[A-Za-z]+://[A-Za-z0-9-_]+.[A-Za-z0-9-_:%&?/.=]+/g",function(m):String { return m.linkify(m);});
        //return texty.replace(/[A-Za-z]+://[A-Za-z0-9-_]+.[A-Za-z0-9-_:%&?/.=]+/g, function(m):String {return m.linkify(m);}).replace(/(^|[^w])(@[dw-]+)/g, function(m2):String{return '@<a href="http://twitter.com/' + m2.substr(1) + '">' + m2.substr(1) + '</a>'; });
        var pattern:RegExp = /[A-Za-z]+://[A-Za-z0-9-_]+.[A-Za-z0-9-_:%&?/.=]+/g;
        var match:String = pattern.exec(texty);
        return texty.replace(pattern,'<a href="' + match + '">' + 
        match + '</a>');
    }

    ]]>
</mx:Script>

上述脚本的问题在于它识别出第一个匹配项并使用它.另外我如何为 @ 做这件事?

The problem with the above script is that it recognizes the first match and uses that across. Also how do i do it for @?

非常感谢任何帮助.

推荐答案

ooph ... 为什么现在每个人都使用正则表达式来完成超级简单的任务?此外，您忘记了，+"是 URL 的有效字符，可以替代空格，甚至是 可能会使用很多其他字符，因此您的模式甚至不会相应地匹配...

ooph ... why does everybody use regex these days, to accomplish super simple tasks? also, you forgot, that "+" is a valid character for URLs, as a replacement for space, and even an awful lot of other characters may be used, so your pattern would not even match accordingly ...

好吧，无论如何，看看 AS3 正则表达式元字符 ...这将大大提高您的表达式的可读性并且更加健壮......

well, anyway, have a look at AS3 regex metacharacters ... that'll GREATLY improve your expression's readability and is much more robust...

我真的会选择这样的:

var r:RegExp = /(?:http|https)://S*/g;
trace(str.replace(r, function (s:String,...rest):String { 
    return '<a href="' + s + '">' + s + '</a>' 
} ));

但实际的重点是 global 标志...

but the actual point, was the global flag ...

祝你好运... :)

问候

back2dos

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