root / trunk / web / dojo / dojox / encoding / base64.js @ 9
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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.base64"]){ |
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dojo._hasResource["dojox.encoding.base64"]=true; |
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dojo.provide("dojox.encoding.base64");
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(function(){
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var p="="; |
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var _1="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
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var _2=dojox.encoding;
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_2.base64.encode=function(ba){ |
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var s=[],l=ba.length;
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var rm=l%3; |
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var x=l-rm;
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for(var i=0;i<x;){ |
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var t=ba[i++]<<16|ba[i++]<<8|ba[i++]; |
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s.push(_1.charAt((t>>>18)&63)); |
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s.push(_1.charAt((t>>>12)&63)); |
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s.push(_1.charAt((t>>>6)&63)); |
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s.push(_1.charAt(t&63));
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} |
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switch(rm){
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case 2: |
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var t=ba[i++]<<16|ba[i++]<<8; |
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s.push(_1.charAt((t>>>18)&63)); |
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s.push(_1.charAt((t>>>12)&63)); |
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s.push(_1.charAt((t>>>6)&63)); |
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s.push(p); |
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break;
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case 1: |
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var t=ba[i++]<<16; |
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s.push(_1.charAt((t>>>18)&63)); |
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s.push(_1.charAt((t>>>12)&63)); |
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s.push(p); |
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s.push(p); |
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break;
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} |
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return s.join(""); |
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}; |
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_2.base64.decode=function(_3){ |
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var s=_3.split(""),_4=[]; |
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var l=s.length;
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while(s[--l]==p){
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} |
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for(var i=0;i<l;){ |
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var t=_1.indexOf(s[i++])<<18; |
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if(i<=l){
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t|=_1.indexOf(s[i++])<<12;
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} |
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if(i<=l){
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t|=_1.indexOf(s[i++])<<6;
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} |
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if(i<=l){
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t|=_1.indexOf(s[i++]); |
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} |
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_4.push((t>>>16)&255); |
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_4.push((t>>>8)&255); |
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_4.push(t&255);
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} |
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while(_4[_4.length-1]==0){ |
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_4.pop(); |
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} |
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return _4;
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}; |
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})(); |
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} |