/***********************************************************
UrlBuilder Class created by JavaScript
Author: lizhi[at]hit.edu.cn
Version: 1.0
Created: 2006.02.21 22:05
Updated: N/A
History:
1. The first version of code created in 2006.02.21
***********************************************************/
function UrlBuilder(url)
{
this.m_Href = null;
this.m_Host = null;
this.m_Hostname = null;
this.m_Port = null;
this.m_Protocol = null;
this.m_Path = null;
this.m_Search = null;
this.m_Hash = null;
this.m_Params = null;
this.m_Sucess = false;
if ( url ) this.Parse(url);
this.toString = function()
{
return '[class UrlBuilder]';
};
}
UrlBuilder.prototype.Parse = function(url)
{
var m = url.match(/(\w{3,5}:)\/\/([^\.]+(?:\.[^\.:/]+)+)(?::(\d{1,5}))?\/?/);
if ( m )
{
this.m_Protocol = m[1];
this.m_Hostname = m[2];
this.m_Port = m[3];
if ( this.m_Port )
{
this.m_Host = this.m_Hostname + ':' + this.m_Port;
}
else
{
this.m_Host = m[2];
}
var indexHash = url.indexOf('#');
if ( indexHash != -1 )
{
this.m_Hash = url.substr(indexHash);
}
else
{
this.m_Hash = '';
}
var indexParams = url.indexOf('?');
if ( indexParams != -1 )
{
if ( indexHash != -1 )
{
this.m_Search = url.substring(indexParams, indexHash);
}
else
{
this.m_Search = url.substr(indexParams);
}
this.m_Path = url.substr(indexParams);
}
else
{
this.m_Search = '';
}
this.m_Success = true;
this.m_Params = null;
this.m_Href = url;
}
};
UrlBuilder.prototype.GetValue = function(key, encoding)
{
if ( !this.m_Params )
{
if ( this.m_Search )
{
this.m_Params = {};
var search = this.m_Search.substring(1);
var keyValues = search.split('&');
for ( var i=0 ; i < keyValues.length ; ++i )
{
var keyValue = keyValues[i];
var index = keyValue.indexOf('=');
if ( index != -1 )
{
this.m_Params[keyValue.substring(0, index)] = keyValue.substr(index+1);
}
else
{
this.m_Params[keyValue] = '';
}
}
}
}
encoding = encoding || '';
switch(encoding.toUpperCase())
{
case 'UTF8' :
{
return decodeURI(this.m_Params[key]);
}
case 'UNICODE' :
{
return unescape(this.m_Params[key]);
}
case 'GB2312' : // need VBScript function Chr()
default :
{
return this.m_Params[key];
}
}
}
Test Case:
<
script
language
="javascript"
>
function
TestUrlBuilder()
{
var
url
=
new
UrlBuilder('http:
//
birdshome.cnblogs.com:8080/index.aspx?hl=zh-CN&newwindow=1&q=#abc');
url.GetValue('');
var
strParams
=
'';
for
(
var
key
in
url.m_Params )
{ strParams
+=
key
+
'
=
'
+
decodeURI(url.m_Params[key])
+
'\r\n'; }
alert('m_Href\t
=
\t'
+
url.m_Href
+
'\r\nm_Host\t
=
\t'
+
url.m_Host
+
'\r\nm_Hostname\t
=
\t'
+
url.m_Hostname
+
'\r\nm_Port\t
=
\t'
+
url.m_Port
+
'\r\nm_Protocol
=
\t'
+
url.m_Protocol
+
'\r\nm_Path\t
=
\t'
+
url.m_Path
+
'\r\nm_Search\t
=
\t'
+
url.m_Search
+
'\r\nm_Hash\t
=
\t'
+
url.m_Hash
+
'\r\n\r\n'
+
strParams); }
</
script
>
Result:
m_Href = http://birdshome.cnblogs.com:8080/index.aspx?hl=zh-CN
&newwindow=1
&q=#abc
m_Host = birdshome.cnblogs.com:8080
m_Hostname = birdshome.cnblogs.com
m_Port = 8080
m_Protocol = http:
m_Path = ?hl=zh-CN
&newwindow=1
&q=#abc
m_Search = ?hl=zh-CN
&newwindow=1
&q=
m_Hash = #abc
hl = zh-CN
newwindow = 1
q =
Shortage:
正则表达式：/(\w{3,5}:)\/\/([^\.]+(?:\.[^\.:/]+)+)(?::(\d{1,5}))?\/?/ 不能处理带有用户名和密码的url，同时也不能处理Int32格式的IP地址(如: http://3396788377/)，本来支持也容易，但是这两种url的使用频率实在太少了。
本文转自博客园鸟食轩的博客，原文链接：http://www.cnblogs.com/birdshome/，如需转载请自行联系原博主。
