使用javascript写的GUID生成器。

啥都不说，先贴代码。

$System = {"Math":{} , "DS":{} , "Type":{}};
$System.Type.TypeUtil = function(){throw new Error("$System.Type.TypeUtil is a static class.");}
$System.Type.TypeUtil.isString = function(value){
return ((typeof(value) == "string")||((typeof value == "object") && (value instanceof String)));
}
$System.Type.TypeUtil.isDate = function(value){
return ((typeof value == "object") && (value instanceof Date));
}
$System.Type.TypeUtil.isRegExp = function(value){
return ((typeof value == "object") && (value instanceof RegExp));
}
$System.Type.TypeUtil.isArray = function(value){
return ((typeof value == "object") && (value instanceof Array));
}
$System.Type.TypeUtil.isNumber = function(value){
return !isNaN(value);
}
$System.Type.TypeUtil.isBoolean = function(value){
return ((typeof(value) == "boolean")||((typeof value == "object") && (value instanceof Boolean)));
}
$System.Type.TypeUtil.isFunction = function(value){
return ((typeof value == "function")||((typeof value == "object") && (value instanceof Function)));
}
$System.Type.TypeUtil.isInteger = function(value){
return ($System.Type.TypeUtil.isNumber(value) && (Math.round(value) == value));
}
$System.Type.TypeUtil.isFloat = function(value){
if($System.Type.TypeUtil.isString(value)){
return false;
}
return ($System.Type.TypeUtil.isNumber(value) && (Math.round(value) != value));
}
$System.Type.TypeUtil.isError = function(value){
return ((typeof value == "object") && (value instanceof Error));
}
//哈希表类
$System.DS.HashTable = function(){
this.o = {};
for(key in this.o){
delete this.o[key];
}
this.size = 0;
}
//获取元素数目
$System.DS.HashTable.prototype.getSize = function(){
return this.size;
}
//添加键值对
$System.DS.HashTable.prototype.set = $System.DS.HashTable.prototype.add = function(key , value){
if(!(key in this.o)){
this.size++;
}
this.o[key] = {"v":value};
}
//取值
$System.DS.HashTable.prototype.get = function(key){
if(key in this.o){
return this.o[key]["v"];
}
return null;
}
//检查值是否存在
$System.DS.HashTable.prototype.hasThisKey = function(key){
return (key in this.o);
}
//取值相同的键名数组
$System.DS.HashTable.prototype.getKeyListByValue = function(value){
var list = [];
for(key in this.o){
if(this.o[key]["v"] == value){
list.push(key);
}
}
return list;
}
//删除
$System.DS.HashTable.prototype.remove = function(key){
if(key in this.o){
this.size--;
delete this.o[key]["v"];
delete this.o[key];
}
}
//删除所有
$System.DS.HashTable.prototype.removeAll = function(){
for(key in this.o){
delete this.o[key]["v"];
delete this.o[key];
}
this.size = 0;
}
$System.DS.HashTable.prototype.getO = function(){
return this.o;
}
//当str1="=",str2="&"的时候，组织查询字符串
$System.DS.HashTable.prototype.join = function(str1 , str2){
var a = new Array();
for(key in this.o){
a.push(key + str1 + this.get(key));
}
return a.join(str2);
}
//销毁
$System.DS.HashTable.dispose = function(oht){
oht.dispose();
oht = null;
}
//销毁
$System.DS.HashTable.prototype.dispose = function(){
this.removeAll();
}
//整数工具类（还有大整数类，加密类，md5类等等以后慢慢贴上来）
$System.Math.IntUtil = function(){throw new Error("$System.Math.IntUtil is a static class.")}
//十进制到二机制转换，注释里面的方式也可以用，下同。依赖js中的整数范围，不可靠。
$System.Math.IntUtil.dec2Bin = function(decInt){
/*
var m = 0;
var s = 0;
var binStr = "";
if(decInt == 0){
return "0";
}
while(decInt != 0){
m = decInt % 2;
decInt = (decInt - m) /2;
binStr = m + binStr;
}
return binStr;
*/
return decInt.toString(2);
}
$System.Math.IntUtil.hexNumArray = new Array("0" , "1" , "2" , "3" , "4" , "5" , "6" , "7" , "8" , "9" , "A" , "B" , "C" , "D" , "E" , "F");
//十进制到十六进制转换。
$System.Math.IntUtil.dec2Hex = function(decInt){
//var hexNumArray = new Array("0" , "1" , "2" , "3" , "4" , "5" , "6" , "7" , "8" , "9" , "A" , "B" , "C" , "D" , "E" , "F");
/*
var hexNumArray = $System.Math.IntUtil.hexNumArray;
var m = 0;
var s = 0;
var hexStr = "";
if(decInt == 0){
return "0";
}
while(decInt != 0){
m = decInt % 16;
decInt = (decInt - m) / 16;
hexStr = hexNumArray[m] + hexStr;
}
return hexStr;
*/
return decInt.toString(16).toUpperCase();
}
$System.Math.IntUtil.numHexArray = {"0" : "0" , "1" : "1" , "2" : "2" , "3" : "3" , "4" : "4" , "5" : "5" , "6" : "6" , "7" : "7" , "8" : "8" , "9" : "9" , "A" : "10" , "B" : "11" , "C" : "12" , "D" : "13" , "E" : "14" , "F" : "15"};
//十六进制到十进制转换。
$System.Math.IntUtil.hex2Dec = function(oriHexStr){
//var numHexArray = {"0" : "0" , "1" : "1" , "2" : "2" , "3" : "3" , "4" : "4" , "5" : "5" , "6" : "6" , "7" : "7" , "8" : "8" , "9" : "9" , "A" : "10" , "B" : "11" , "C" : "12" , "D" : "13" , "E" : "14" , "F" : "15"};
/*
var numHexArray = $System.Math.IntUtil.numHexArray;
hexStr = oriHexStr.toUpperCase();
var iniArray = hexStr.split("");
var numArray = iniArray.reverse();
var len = numArray.length;
var decInt = 0;
var num = 0;
for(var i = 0 ; i < len ; i ++){
num += parseInt(numHexArray[numArray[i]]) * Math.pow(16 , i);
}
return num;
*/
return parseInt(oriHexStr , 16);
}
//二进制到十进制转换。
$System.Math.IntUtil.bin2Dec = function(binStr){
/*
var iniArray = binStr.split("");
var numArray = iniArray.reverse();
var len = numArray.length;
var decInt = 0;
var num = 0;
for(var i = 0 ; i < len ; i ++){
num += parseInt(numArray[i]) * Math.pow(2 , i);
}
return num;
*/
return parseInt(binStr , 2);
}
$System.Math.IntUtil.binHexArray = {"0000":"0","0001":"1","0010":"2","0011":"3","0100":"4","0101":"5","0110":"6","0111":"7","1000":"8","1001":"9","1010":"A","1011":"B","1100":"C","1101":"D","1110":"E","1111":"F"};
//二进制到十六进制转换，这个很可靠，因为是字符串，不受整数类型范围限制。
$System.Math.IntUtil.bin2Hex = function(binStr){
var n = 0;
while(binStr.charAt(n) == "0"){
n++;
}
if(n > 0){
binStr = binStr.substring(n , binStr.length);
}
var i , hexStrArray = [] , binHexArray = $System.Math.IntUtil.binHexArray , len = binStr.length;
for(i = len ; i > 3 ; i =  i - 4){
hexStrArray.push(binHexArray[binStr.substring(i - 4 , i)]);
}
hexStrArray.push(binHexArray[$System.Math.IntUtil.fillZero(binStr.substring(i - 4 , i) , 4)]);
return hexStrArray.reverse().join("");
}
$System.Math.IntUtil.hexBinArray = {"0":"0000","1":"0001","2":"0010","3":"0011","4":"0100","5":"0101","6":"0110","7":"0111","8":"1000","9":"1001","A":"1010","B":"1011","C":"1100","D":"1101","E":"1110","F":"1111"};
//十六进制到二进制转换。
$System.Math.IntUtil.hex2Bin = function(hexStr){
var n = 0;
while(hexStr.charAt(n) == "0"){
n++;
}
if(n > 0){
hexStr = hexStr.substring(n , hexStr.length);
}
var hexStrArray = hexStr.split("") , len = hexStrArray.length , binStrArray = [] , hexBinArray = $System.Math.IntUtil.hexBinArray;
for(var i = 0 ; i < len ; i++){
binStrArray.push(hexBinArray[hexStrArray[i]]);
}
return binStrArray.join("");
}
//补零的方法。
$System.Math.IntUtil.fillZero = function(str , stdLength , allowEmpty){
if(str == "" && !allowEmpty){
return "";
}
c = stdLength - str.length;
var str0 = ""
for(var i = 0 ; i < c ; i++){
str0 = "0" + str0;
}
return  str0 + str;
}
/*
$System.Math.IntUtil.__GUIDPool = {};
for(key in $System.Math.IntUtil.__GUIDPool){
delete $System.Math.IntUtil.__GUIDPool[key];
}
$System.Math.IntUtil.__GUIDCheckAndAdd = function(guid){
if(!$System.Math.IntUtil.__GUIDPool[guid]){
return $System.Math.IntUtil.__GUIDPool[guid] = true;
}
else{
return false;
}
}
*/
//guid池，避免重复guid。
$System.Math.IntUtil.__GUIDPool = new $System.DS.HashTable();
$System.Math.IntUtil.__GUIDCheckAndAdd = function(guid){
if(!$System.Math.IntUtil.__GUIDPool.hasThisKey(guid)){
$System.Math.IntUtil.__GUIDPool.set(guid , true);
return true;
}
else{
return false;
}
}
//不补零的guid。
$System.Math.IntUtil.__genGUID = function(){
var part1 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * ($System.Math.IntUtil.hex2Dec("FFFFFFFF") + 1)));
var part2 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 65536));
var str4 = $System.Math.IntUtil.fillZero($System.Math.IntUtil.dec2Bin(Math.floor(Math.random() * 256)));
var part3 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 65536));
//var part4 = $System.Math.IntUtil.dec2Hex($System.Math.IntUtil.bin2Dec(str4.substr(0 , 5) + "01" + str4.substr(7 , 1)));
var part4 = $System.Math.IntUtil.bin2Hex(str4.substr(0 , 5) + "01" + str4.substr(7 , 1));
var part5 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 256));
var part6 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * ($System.Math.IntUtil.hex2Dec("FFFFFFFFFFFF") + 1)));
var guid = "GUID_" + part1 + "_" + part2 + "_" + part3 + "_" + part4 + part5 + "_" + part6;
if($System.Math.IntUtil.__GUIDCheckAndAdd(guid)){
return guid;
}
else{
return $System.Math.IntUtil.__genGUID();
}
}
//补了零的标准的guid格式（当然多了个“guid_”前缀,以及使用“_”代替“-”）。
$System.Math.IntUtil.genGUID = function(){
var part1 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * ($System.Math.IntUtil.hex2Dec("FFFFFFFF") + 1)));
var part2 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 65536));
var str4 = $System.Math.IntUtil.fillZero($System.Math.IntUtil.dec2Bin(Math.floor(Math.random() * 256)));
var part3 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 65536));
//var part4 = $System.Math.IntUtil.dec2Hex($System.Math.IntUtil.bin2Dec(str4.substr(0 , 5) + "01" + str4.substr(7 , 1)));
var part4 = $System.Math.IntUtil.bin2Hex(str4.substr(0 , 5) + "01" + str4.substr(7 , 1));
var part5 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 256));
var part6 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * ($System.Math.IntUtil.hex2Dec("FFFFFFFFFFFF") + 1)));
part1 = $System.Math.IntUtil.fillZero(part1 , 8);
part2 = $System.Math.IntUtil.fillZero(part2 , 4);
part3 = $System.Math.IntUtil.fillZero(part3 , 4);
part4 = $System.Math.IntUtil.fillZero(part4 , 2);
part5 = $System.Math.IntUtil.fillZero(part5 , 2);
part6 = $System.Math.IntUtil.fillZero(part6 , 12);
var guid = "GUID_" + part1 + "_" + part2 + "_" + part3 + "_" + part4 + part5 + "_" + part6;
if($System.Math.IntUtil.__GUIDCheckAndAdd(guid)){
return guid;
}
else{
return $System.Math.IntUtil.genGUID();
}
}
//V4的guid。
$System.Math.IntUtil.genGUIDV4 = function(){
var part1 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * ($System.Math.IntUtil.hex2Dec("FFFFFFFF") + 1)));
var part2 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 65536));
var str3 = $System.Math.IntUtil.fillZero($System.Math.IntUtil.dec2Bin(Math.floor(Math.random() * 65536)) , 16);
//var part3 = $System.Math.IntUtil.dec2Hex($System.Math.IntUtil.bin2Dec(str3.substr(0 , 12) + "0100"));
var part3 = $System.Math.IntUtil.bin2Hex(str3.substr(0 , 12) + "0100");
var str4 = $System.Math.IntUtil.fillZero($System.Math.IntUtil.dec2Bin(Math.floor(Math.random() * 256)));
//var part4 = $System.Math.IntUtil.dec2Hex($System.Math.IntUtil.bin2Dec(str4.substr(0 , 5) + "01" + str4.substr(7 , 1)));
var part4 = $System.Math.IntUtil.bin2Hex(str4.substr(0 , 5) + "01" + str4.substr(7 , 1));
var part5 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 256));
var part6 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * ($System.Math.IntUtil.hex2Dec("FFFFFFFFFFFF") + 1)));
part1 = $System.Math.IntUtil.fillZero(part1 , 8);
part2 = $System.Math.IntUtil.fillZero(part2 , 4);
part3 = $System.Math.IntUtil.fillZero(part3 , 4);
part4 = $System.Math.IntUtil.fillZero(part4 , 2);
part5 = $System.Math.IntUtil.fillZero(part5 , 2);
part6 = $System.Math.IntUtil.fillZero(part6 , 12);
var guid = "GUID_" + part1 + "_" + part2 + "_" + part3 + "_" + part4 + part5 + "_" + part6;
if($System.Math.IntUtil.__GUIDCheckAndAdd(guid)){
return guid;
}
else{
return $System.Math.IntUtil.genGUIDV4();
}
}
//获取一个guid长度的随机字符串。
$System.Math.IntUtil.__genRandomString = function(){
var part1 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * ($System.Math.IntUtil.hex2Dec("FFFFFFFF") + 1)));
var part2 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 65536));
var str4 = $System.Math.IntUtil.fillZero($System.Math.IntUtil.dec2Bin(Math.floor(Math.random() * 256)));
var part3 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 65536));
//var part4 = $System.Math.IntUtil.dec2Hex($System.Math.IntUtil.bin2Dec(str4.substr(0 , 5) + "01" + str4.substr(7 , 1)));
var part4 = $System.Math.IntUtil.bin2Hex(str4.substr(0 , 5) + "01" + str4.substr(7 , 1));
var part5 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * 256));
var part6 = $System.Math.IntUtil.dec2Hex(Math.floor(Math.random() * ($System.Math.IntUtil.hex2Dec("FFFFFFFFFFFF") + 1)));
part1 = $System.Math.IntUtil.fillZero(part1 , 8);
part2 = $System.Math.IntUtil.fillZero(part2 , 4);
part3 = $System.Math.IntUtil.fillZero(part3 , 4);
part4 = $System.Math.IntUtil.fillZero(part4 , 2);
part5 = $System.Math.IntUtil.fillZero(part5 , 2);
part6 = $System.Math.IntUtil.fillZero(part6 , 12);
var guid = part1 + part2 + part3 + part4 + part5 +  part6;
return guid;
}
//获取任意长度的随机字符串。
$System.Math.IntUtil.genRandomString = function(len){
if(!($System.Type.TypeUtil.isInteger(len) && len > 0)){
len = 2;
}
var rnd = "";
for(var i = 0 ; i < len ; i++){
rnd += $System.Math.IntUtil.__genRandomString();
}
return "RND_" + rnd;
}

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有使用的朋友请多多反馈意见，共同探讨，共同进步。谢谢！Q.Q..1072216106.

posted @ 2009-10-31 20:43 lonely~ 阅读(1616) 评论(2) 编辑收藏举报

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