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root / trunk / web / dojo / dojox / encoding / easy64.js @ 10

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/*
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        Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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        Available via Academic Free License >= 2.1 OR the modified BSD license.
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        see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojox.encoding.easy64"]){
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dojo._hasResource["dojox.encoding.easy64"]=true;
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dojo.provide("dojox.encoding.easy64");
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(function(){
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var c=function(_1,_2,_3){
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for(var i=0;i<_2;i+=3){
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_3.push(String.fromCharCode((_1[i]>>>2)+33),String.fromCharCode(((_1[i]&3)<<4)+(_1[i+1]>>>4)+33),String.fromCharCode(((_1[i+1]&15)<<2)+(_1[i+2]>>>6)+33),String.fromCharCode((_1[i+2]&63)+33));
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}
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};
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dojox.encoding.easy64.encode=function(_4){
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var _5=[],_6=_4.length%3,_7=_4.length-_6;
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c(_4,_7,_5);
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if(_6){
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var t=_4.slice(_7);
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while(t.length<3){
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t.push(0);
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}
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c(t,3,_5);
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for(var i=3;i>_6;_5.pop(),--i){
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}
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}
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return _5.join("");
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};
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dojox.encoding.easy64.decode=function(_8){
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var n=_8.length,r=[],b=[0,0,0,0],i,j,d;
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for(i=0;i<n;i+=4){
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for(j=0;j<4;++j){
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b[j]=_8.charCodeAt(i+j)-33;
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}
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d=n-i;
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for(j=d;j<4;b[++j]=0){
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}
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r.push((b[0]<<2)+(b[1]>>>4),((b[1]&15)<<4)+(b[2]>>>2),((b[2]&3)<<6)+b[3]);
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for(j=d;j<4;++j,r.pop()){
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}
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}
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return r;
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};
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})();
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}