js代码压缩/解压程序

    有朋友问起我jGridViewBar的压缩是用的什么工具，我用的是一个普通的HTML的转换器，现在找出来与大家共享。
    在线Demo：http://www.senparc.com/WebTools.xhtml/JsPack
    把下列代码保存为.html直接在浏览器中打开就能用

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html>

<head>

<title>Javascript Compressor</title>

function ICommon(that){

if(that!=null){

that.inherit=Common.prototype.inherit;

that.specialize=Common.prototype.specialize

}

return that

};

ICommon.specialize=function(p,c){

if(!p)p={};

if(!c)c=p.constructor;

if(c=={}.constructor) c=new Function("this.inherit()");

c.valueOf=new Function("return this");

c.valueOf.prototype=new this.valueOf;

c.valueOf.prototype.specialize(p);

c.prototype=new c.valueOf;

c.valueOf.prototype.constructor=c.prototype.constructor=c;

c.ancestor=this;

c.specialize=arguments.callee;

c.ancestorOf=this.ancestorOf;

return c

};

ICommon.valueOf=new Function("return this");

ICommon.valueOf.prototype={

constructor:ICommon,inherit:function(){

return arguments.callee.caller.ancestor.apply(this,arguments)

},specialize:function(that){

if(this==this.constructor.prototype&&this.constructor.specialize){

return this.constructor.valueOf.prototype.specialize(that)

}

for(var i in that){

switch(i){

case"constructor":case"toString":case"valueOf":continue

}

if(typeof that[i]=="function"&&that[i]!=this[i]){

that[i].ancestor=this[i]

}

this[i]=that[i]

}

if(that.toString!=this.toString&&that.toString!={}.toString){

that.toString.ancestor=this.toString;

this.toString=that.toString

}

return this

}

};

function Common(){};

this.Common=ICommon.specialize({

constructor:Common,toString:function(){

return"[common "+(this.constructor.className||"Object")+"]"

},instanceOf:function(klass){

return this.constructor==klass||klass.ancestorOf(this.constructor)

}

});

Common.className="Common";

Common.ancestor=null;

Common.ancestorOf=function(klass){

while(klass&&klass.ancestor!=this) klass=klass.ancestor;

return Boolean(klass)

};

Common.valueOf.ancestor=ICommon;

function ParseMaster(){

var E=0,R=1,L=2;

var G=/\(/g,S=/\$\d/,I=/^\$\d+$/,T=/(['"])\1\+(.*)\+\1\1$/,ES=/\\./g,Q=/'/,DE=/\x01[^\x01]*\x01/g;

var self=this;

this.add=function(e,r){

if(!r)r="";

var l=(_14(String(e)).match(G)||"").length+1;

if(S.test(r)){

if(I.test(r)){

r=parseInt(r.slice(1))-1

}else{

var i=l;

var q=Q.test(_14(r))?'"':"'";

while(i) r=r.split("$"+i--).join(q+"+a[o+"+i+"]+"+q);

r=new Function("a,o","return"+q+r.replace(T,"$1")+q)

}

_33(e||"/^$/",r,l)

};

this.exec=function(s){

_3.length=0;

return _30(_5(s,this.escapeChar).replace(new RegExp(_1,this.ignoreCase?"gi":"g"),_31),this.escapeChar).replace(DE,"")

};

this.reset=function(){

_1.length=0};

var _3=[];

var _1=[];

var _32=function(){ return"("+String(this[E]).slice(1,-1)+")" };

_1.toString=function(){return this.join("|")};

function _33(){

arguments.toString=_32;

_1[_1.length]=arguments

}

function _31(){

if(!arguments[0]) return"";

var i=1,j=0,p;

while(p=_1[j++]){

if(arguments[i]){

var r=p[R];

switch(typeof r){

case"function":return r(arguments,i);

case"number":return arguments[r+i]

}

var d=(arguments[i].indexOf(self.escapeChar)==-1)?"":"\x01"+arguments[i]+"\x01";

return d+r

}else i+=p[L]

}

};

function _5(s,e){return e?s.replace(new RegExp("\\"+e+"(.)","g"),function(m,c){ _3[_3.length]=c; return e }):s};

function _30(s,e){var i=0;return e?s.replace(new RegExp("\\"+e,"g"),function(){ return e+(_3[i++]||"")}):s };

function _14(s){return s.replace(ES,"")}

};

ParseMaster.prototype={ constructor:ParseMaster,ignoreCase:false,escapeChar:"" };

if(/MSIE 5.0/.test(navigator.userAgent)) new function(){

var ap=function(f,o,a){f.apply(o,a)};

if(''.replace(/^/,String)){

var _28=String.prototype.replace;

var _29=function(e,r){

var m,n="",s=this;

while(s&&(m=e.exec(s))){

n+=s.slice(0,m.index)+ap(r,this,m);

s=s.slice(m.lastIndex)

}

return n+s

};

String.prototype.replace=function(e,r){

this.replace=(typeof r=="function")?_29:_28;

return this.replace(e,r)

}

if(!Function.apply){

var APPLY="apply-"+Number(new Date);

ap=function(f,o,a){

var r;

o[APPLY]=f;

switch(a.length){

case 0:r=o[APPLY]();break;

case 1:r=o[APPLY](a[0]);break;

case 2:r=o[APPLY](a[0],a[1]);break;

case 3:r=o[APPLY](a[0],a[1],a[2]);break;

case 4:r=o[APPLY](a[0],a[1],a[2],a[3]);break;

default:var aa=[],i=a.length-1;do aa[i]="a["+i+"]";while(i--);eval("r=o[APPLY]("+aa+")")

}

delete o[APPLY];

return r

};

if(typeof ICommon=="function") ICommon.valueOf.prototype.inherit=function(){

return ap(arguments.callee.caller.ancestor,this,arguments)

}

if(![].push) Array.prototype.push=function(){

for(var i=0;i<arguments.length;i++){

this[this.length]=arguments[i]

}

return this.length

};

if(![].pop) Array.prototype.pop=function(){

var i=this[this.length-1];

this.length--;

return i

}

};

function pack(_7,_0,_2,_8){

var I="$1";_7+="\n";

_0=Math.min(parseInt(_0),95);

function _15(s){

var i,p;

for(i=0;(p=_6[i]);i++){s=p(s)}

return s

};

var _25=function(p,a,c,k,e,d){

while(c--) if(k[c]) p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);

return p

};

var _26=function(){

if(!''.replace(/^/,String)){

while(c--)d[e(c)]=k[c]||e(c);

k=[function(e){return d[e]}];

e=function(){return'\\w+'};

c=1

}

};

var _6=[];

function _4(p){

_6[_6.length]=p

};

function _18(s){

var p=new ParseMaster;

p.escapeChar="\\";

p.add(/'[^'\n\r]*'/,I);

p.add(/"[^"\n\r]*"/,I);

p.add(/\/\/[^\n\r]*[\n\r]/," ");

p.add(/\/\*[^*]*\*+([^\/][^*]*\*+)*\//," ");

p.add(/\s+(\/[^\/\n\r\*][^\/\n\r]*\/g?i?)/,"$2");

p.add(/[^\w\x24\/'"*)\?:]\/[^\/\n\r\*][^\/\n\r]*\/g?i?/,I);

if(_8)p.add(/;;;[^\n\r]+[\n\r]/);

p.add(/$;;$/,I);

p.add(/;+\s*([};])/,"$2");

s=p.exec(s);

p.add(/(\b|\x24)\s+(\b|\x24)/,"$2 $3");

p.add(/([+\-])\s+([+\-])/,"$2 $3");

p.add(/\s+/,"");

return p.exec(s)

};

function _17(s){

var p=new ParseMaster;

p.add(/((\x24+)([a-zA-Z_]+))(\d*)/,function(m,o){

var l=m[o+2].length;

var s=l-Math.max(l-m[o+3].length,0);

return m[o+1].substr(s,l)+m[o+4]

});

var r=/\b_[A-Za-z\d]\w*/;

var k=_13(s,_9(r),_21);

var e=k.e;

p.add(r,function(m,o){return e[m[o]]});

return p.exec(s)

};

function _16(s){

if(_0>62)s=_20(s);

var p=new ParseMaster;

var e=_12(_0);

var r=(_0>62)?/\w\w+/ :/\w+/;

k=_13(s,_9(r),e);

var e=k.e;

p.add(r,function(m,o){return e[m[o]]});

return s&&_27(p.exec(s),k)

};

function _13(s,r,e){

var a=s.match(r);

var so=[];

var en={};

var pr={};

if(a){

var u=[];

var p={};

var v={};

var c={};

var i=a.length,j=0,w;

do{

w="$"+a[--i];

if(!c[w]){

c[w]=0;

u[j]=w;

p["$"+(v[j]=e(j))]=j++

}

c[w]++

}

while(i);

i=u.length;

do{

w=u[--i];

if(p[w]!=null){

so[p[w]]=w.slice(1);

pr[p[w]]=true;

c[w]=0

}

while(i);

u.sort(function(m1,m2){return c[m2]-c[m1]});

j=0;

do{

if(so[i]==null) so[i]=u[j++].slice(1);

en[so[i]]=v[i]

}

while(++i<u.length)

}

return{s:so,e:en,p:pr}

};

function _27(p,k){

var E=_10("e\$c\$","g");

p="'"+_5(p)+"'";

var a=Math.min(k.s.length,_0)||1;

var c=k.s.length;

for(var i in k.p) k.s[i]="";

k="'"+k.s.join("|")+"'.split('|')";

var e=_0>62?_11:_12(a);

e=String(e).replace(/_0/g,"a").replace(/arguments\.callee/g,"e");

var i="c"+(a>10?".toString(a)":"");

if(_2){

var d=_19(_26);

if(_0>62)d=d.replace(/\\\\w/g,"[\\xa1-\\xff]");

else if(a<36)d=d.replace(E,i);

if(!c)d=d.replace(_10("(c)\\s*=\\s*1"),"$1=0")

}

var u=String(_25);

if(_2){ u=u.replace(/\{/,"{"+d+";") }

u=u.replace(/"/g,"'");

if(_0>62){ u=u.replace(/'\\\\b'\s*\+|\+\s*'\\\\b'/g,"") }

if(a>36||_0>62||_2){ u=u.replace(/\{/,"{e="+e+";") }else{ u=u.replace(E,i) }

u=pack(u,0,false,true);

var p=[p,a,c,k];

if(_2){ p=p.concat(0,"{}") }

return"eval("+u+"("+p+"))\n"

};

function _12(a){return a>10?a>36?a>62?_11:_22:_23:_24};

var _24=function(c){ return c };

var _23=function(c){ return c.toString(36) };

var _22=function(c){ return(c<_0?'':arguments.callee(parseInt(c/_0)))+((c=c%_0)>35?String.fromCharCode(c+29):c.toString(36)) };

var _11=function(c){ return(c<_0?'':arguments.callee(c/_0))+String.fromCharCode(c%_0+161) };

var _21=function(c){ return"_"+c };

function _5(s){ return s.replace(/([\\'])/g,"\\$1") };

function _20(s){ return s.replace(/[\xa1-\xff]/g,function(m){ return"\\x"+m.charCodeAt(0).toString(16) }) };

function _10(s,f){ return new RegExp(s.replace(/\$/g,"\\$"),f) };

function _19(f){ with(String(f))return slice(indexOf("{")+1,lastIndexOf("}")) };

function _9(r){ return new RegExp(String(r).slice(1,-1),"g") };

_4(_18);

if(_8)_4(_17);

if(_0)_4(_16);

return _15(_7)

};

var input,output;

onload=function(){

if(!document.getElementById||''.replace(/^/,String))return;

input=document.getElementById("input");//内容文本区域

var message=document.getElementById("message");//消息

var encoding=document.getElementById("ascii-encoding");//编码方式选择列表值有0、10、62、95

var fastDecode=document.getElementById("fast-decode");//快速解码选择框

var specialChars=document.getElementById("special-chars");//特殊字符选择框

function packScript(){//执行压缩

try{

if(input.value){

input.value=pack(input.value,encoding.value,fastDecode.checked,specialChars.checked);

//调用编码函数输入代码，编码方式，是否快速解码，是否特殊字符

}

}catch(e){

reportError("error packing script",e.message)

}

};

function decodeScript(){//执行解码

try{

if(input.value.substring(0,27)=="eval(function(p,a,c,k,e,d){"){

eval("input.value=String"+input.value.slice(4));

}

else reportError("代码解码取消","您的代码没有用此方法压缩！");

}catch(e){

reportError("代码解码错误",e.message)

}

};

function enableFastDecode(){

fastDecode.disabled=Boolean(encoding.value==0);

fastDecode.parentNode.className=(encoding.value==0)?"disabled":""

};

function reportError(m,e){

message.innerHTML=m+(e?": "+e:"");

message.className="error"

};

encoding.onclick=enableFastDecode;

var buttons=document.getElementsByTagName("button");

var button,i;

for(i=0;(button=buttons[i]);i++){

var handler=eval(button.id);

button.onclick=handler;

handler.button=button

}

};

</script>

</head>

<body >

<label for="input">Paste your code:</label>

<br />

<label for="ascii-encoding">Encoding:</label>

<option value="10">Numeric</option>

<option value="62" selected="selected">Normal</option>

<option value="95">High ASCII</option>

</select><br />

<label for="fast-decode">Fast Decode:

<label for="special-chars">Special Characters:

</p>

</div>

<button type="button" id="packScript">Compress</button>

<button type="button" id="decodeScript" >Decode</button>

</form>

</body>

</html>

界面：

输入js代码：

Compress之后的显示效果：

PS：这段代码是我很久前在网上找的，现在可能有更新的版本或者压缩形式，如果有更好的，欢迎交流！

posted on 2007-12-17 20:08 SZW 阅读(2596) 评论(0) 编辑收藏举报