url 校验及解析 -

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url 校验及解析

jQuery SVN Google XML

<!DOCTYPE html>
<html>
<head>

<meta charset="utf-8" />
<title>test</title>

<script src="jquery-1.5.min.js"></script>
</head>
<body>
<script>

/* MyURL class */
var MyURL = (function() {
//"http://google.com" => {href: "", protocol: "", ...}
function _parseurl(str) {
var reg = /^(?:([a-zA-Z]+):)?(\/{0,3})([0-9.\-a-zA-Z]+)(?::(\d+))?(?:\/([^?#])*)?(?:\?([^#]*))?(?:#(.*))?$/;
if(!reg.test(str)){
alert("erro url");
return;
}
var objOut = {};
var arrObj = reg.exec(str);
objOut["href"] = arrObj[0];
objOut["protocol"] = arrObj[1];
objOut["hostname"] = arrObj[3];
var start =0;
for(var i=1;i<4;i++){
start = start + parseInt(arrObj[i].length);
}
//show exist search or hash or pathname
if(str.length > (start + 2)){
start = start + 1;
var str2 = str.substring(start),
flag1 = str.indexOf("?"),
flag2 = str.indexOf("#");
endStr = 0;
if(flag1 == -1 && flag2 == -1){// no exist ? or #
endStr = str2.length;
}else if(flag1 != -1 && flag2 == -1){// exist ? no #
endStr = str2.indexOf("?");
var arrStr = str2.substring(endStr).split("?");
objOut["search"] = "?" + arrStr[1];
}else if(flag1 == -1 && flag2 != -1){// exist $ no ?
endStr = str2.indexOf("#");
var arrStr = str2.substring(endStr).split("#");
objOut["hash"] = "#" + arrStr[1];
}else if(flag1 != -1 && flag2 != -1){// exist $ no ?
if(flag1 > flag2){// # be seated on front
endStr = str2.indexOf("#");
var arrStr = str2.substring(endStr).split("?");
objOut["search"] = "?" + arrStr[1];
objOut["hash"] = arrStr[0];
}else{//? be seated on front
endStr = str2.indexOf("?");
var arrStr = str2.substring(endStr).split("#");
objOut["search"] = arrStr[0];
objOut["hash"] = "#" + arrStr[1];
}
}
objOut["pathname"] = str2.substring(0,endStr);
}
return objOut;
}
//{a: 1, b: 2} => "a=1&b=2"
function _serialize(obj) {
var arrTemp = [];
for(var key in obj) {
arrTemp.push([key, obj[key]].join("="));
}
return arrTemp.join("&");
}
//"a=1&b=2" => {a: 1, b: 2}
function _deserialize(str) {
var objOut = {},
arrTemp1 = [],
arrTemp2 = str.split("&");
for(var i = 0, len = arrTemp2.length; i < len; i++) {
arrTemp1 = arrTemp2[i].split("=");
objOut[arrTemp1[0]] = arrTemp1[1];
}
return objOut;
}

return function(url) {
var _hash = "",
_hostname = "",
_href = "",
_pathname = "",
_port = "",
_protocol = "",
_search = "",
_query = {};

function _updateToSearch() {
if(jQuery.isEmptyObject(_query)) {
_search = "";
return;
}
_search = "?" + _serialize(_query);
}
function _updateFromSearch() {
if(!_search) {
_query = {};
return;
}
_query = _deserialize(_search.slice(1));
}
function _updateToHref() {
_href = [
_protocol,
"//",
_hostname,
_port ? ":" + _port : _port,
_pathname,
_search,
_hash
].join("");
}
function _updateFromHref() {
_hash = "",
_hostname = "",
_pathname = "",
_port = "",
_protocol = "",
_search = "",
_query = {};
}
function _init(obj) {
_hash = obj["hash"] || "";
_hostname = obj["hostname"] || "";
_href = obj["href"] || "";
_pathname = obj["pathname"] || "";
_port = obj["port"] || "";
_protocol = obj["protocol"] || "";
_search = obj["search"] || "";
_query = _deserialize(_search) || {};
}

this.hash = function(value) {
if(value) {
_hash = value;
_updateToHref();
return this;
} else {
return _hash;
}
};
this.hostname = function(value) {
if(value) {
_hostname = value;
_updateToHref();
return this;
} else {
return _hostname;
}
};
this.href = function(value) {
if(value) {
_href = value;
_updateFromHref();
return this;
} else {
return _href;
}
};
this.pathname = function(value) {
if(value) {
_pathname = value;
_updateToHref();
return this;
} else {
return _pathname;
}
};
this.port = function(value) {
if(value) {
_port = value;
_updateToHref();
return this;
} else {
return _port;
}
};
this.protocol = function(value) {
if(value) {
_protocol = value;
_updateToHref();
return this;
} else {
return _protocol;
}
};
this.search = function(value) {
if(value) {
_search = value;
_updateToHref();
_updateFromSearch();
return this;
} else {
return _search;
}
};
this.query = function(key, value) {
switch(typeof key) {
case "string":
if(value) {
_query[key] = value;
_updateToSearch();
_updateToHref();
return this;
} else {
return _query[key];
}
break;
case "object":
for(var k in key ) {
_query[k] = key[k];
}
_updateToSearch();
_updateToHref();
return this;
break;
case "undefined":
return _query;
break;
default:
return this;
}
};

//constructor code
switch(typeof url) {
case "string":
_init(_parseurl(url));
break;
case "object":
_init(url);
break;
default:
_init(location);
}
}
})();

//
var obj = new MyURL("http://google-styleguide.googlecode.com/svn/trunk/javascriptguide.xml?showone=Semicolons#Semicolons");

</script>

</body>
</html>

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