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How to use JavaScript regular expressions to format XML content

Source: Internet
Author: User
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Using EmEditor, when looking at an XML document, it's always confusing because of the format confusion. This is a EmEditor macro to automatically format the XML. Download:formatxml.rar (1,021.00 bytes)
The following section is the JavaScript formatted XML code for this page version.

Copy Code code as follows:




<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 transitional//en" >


<html>


<head>


<meta http-equiv=content-type content= "text/html; Charset=utf-8 ">


<title>xml formatting Tools </title>


<script type= "Text/javascript" >


String.prototype.removeLineEnd = function ()


    {


return This.replace (/(<.+?s+?) (?: ns*? (.+?=".*?")) /g, ' $ $ '


    }


function Formatxml (text)


    {


Remove the extra space


text = ' n ' + text.replace (/(<w+) (s.*?>)/g,function ($, name, props)


        {


return name + ' + props.replace (/s+ (w+=)/g, "$");


}). replace (/>s*?</g, ">n<");





//Coding the annotation


Text = Text.replace (/n/g, ' R '). Replace (/<!--(. +?) -->/g,function ($, text)


        {


var ret = ' <!--' + escape (text) + '--> ';


//alert (ret);


return ret;


}). replace (/r/g, ' n ');





//Adjustment format


var rgx =/N (< ([^?]). +?) (?: s|s*?>|s*? (/) >) (?:. *? (?:(:( /) >) | (?:< (/) 2>)) /MG;


var nodestack = [];


var output = Text.replace (Rgx,function ($0,all,name,isbegin,isclosefull1,isclosefull2, isfull1,isfull2) {


var isclosed = (IsCloseFull1 = = '/") | | (IsCloseFull2 = = '/') | | (IsFull1 = = '/') | | (IsFull2 = = '/');


//alert ([all,isclosed].join (' = '));


var prefix = ';


if (Isbegin = = '! ')


            {


prefix = getprefix (nodestack.length);


            }


Else


            {


if (isbegin!= '/')


                {


prefix = Getprefix (nodestack.length);


if (!isclosed)


                    {


Nodestack.push (name);


                    }


                }


Else


{


Nodestack.pop ();


prefix = getprefix (nodestack.length);


                }





            }


var ret = ' n ' + prefix + all;


return ret;


        });





var prefixspace =-1;


var outputtext = output.substring (1);


//alert (Outputtext);





//The annotation is restored and decoded, and the format is adjusted


outputtext = Outputtext.replace (/n/g, ' R '). Replace (/(s*) <!--(. +?) -->/g,function ($, prefix, text)


        {


//alert ([' [', prefix, ']= ', Prefix.length].join (')];


if (prefix.charat (0) = = ' R ')


prefix = prefix.substring (1);


Text = unescape (text). Replace (/r/g, ' n ');


var ret = ' n ' + prefix + ' <!--' + text.replace (/^s*/mg, prefix) + '--> ';


//alert (ret);


return ret;


        });





return Outputtext.replace (/s+$/g, '). Replace (/r/g, ' RN ');


    }


function Getprefix (prefixindex)


    {


var span = ';


var output = [];


for (var i = 0; i < Prefixindex ++i)


        {


Output.push (span);


        }





return Output.join (");


    }       


function Btnformat_click ()


        {


var $ = document.getElementById;


$ (' output '). Value = Formatxml ($ (' input '). Value);


        }





</script>





   


</head>


<body>


<textarea id= "input" style= "width:100%;height:45%;" ></textarea>


<div style= "margin:0px auto;" ><input type= "button" id= "Btnformat" onclick= "Btnformat_click ()" value= "format" style= "width:50%;height:10%;" /></div>


<textarea id= "Output" style= "width:100%;height:45%;" ></textarea>


</body>


</html>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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