e44a7e37b6
git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f
78 lines
2.3 KiB
JavaScript
78 lines
2.3 KiB
JavaScript
if(!dojo._hasResource["dojox.encoding.digests._base"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
|
|
dojo._hasResource["dojox.encoding.digests._base"] = true;
|
|
dojo.provide("dojox.encoding.digests._base");
|
|
|
|
(function(){
|
|
//TODO: see if it makes sense to meld this into one with the
|
|
// crypto base enums
|
|
var d=dojox.encoding.digests;
|
|
d.outputTypes={
|
|
// summary
|
|
// Enumeration for input and output encodings.
|
|
Base64:0, Hex:1, String:2, Raw:3
|
|
};
|
|
|
|
// word-based addition
|
|
d.addWords=function(/* word */a, /* word */b){
|
|
// summary
|
|
// add a pair of words together with rollover
|
|
var l=(a&0xFFFF)+(b&0xFFFF);
|
|
var m=(a>>16)+(b>>16)+(l>>16);
|
|
return (m<<16)|(l&0xFFFF); // word
|
|
};
|
|
|
|
// word-based conversion method, for efficiency sake;
|
|
// most digests operate on words, and this should be faster
|
|
// than the encoding version (which works on bytes).
|
|
var chrsz=8;
|
|
var mask=(1<<chrsz)-1;
|
|
|
|
d.stringToWord=function(/* string */s){
|
|
// summary
|
|
// convert a string to a word array
|
|
var wa=[];
|
|
for(var i=0, l=s.length*chrsz; i<l; i+=chrsz){
|
|
wa[i>>5]|=(s.charCodeAt(i/chrsz)&mask)<<(i%32);
|
|
}
|
|
return wa; // word[]
|
|
};
|
|
|
|
d.wordToString=function(/* word[] */wa){
|
|
// summary
|
|
// convert an array of words to a string
|
|
var s=[];
|
|
for(var i=0, l=wa.length*32; i<l; i+=chrsz){
|
|
s.push(String.fromCharCode((wa[i>>5]>>>(i%32))&mask));
|
|
}
|
|
return s.join(""); // string
|
|
}
|
|
|
|
d.wordToHex=function(/* word[] */wa){
|
|
// summary
|
|
// convert an array of words to a hex tab
|
|
var h="0123456789abcdef", s=[];
|
|
for(var i=0, l=wa.length*4; i<l; i++){
|
|
s.push(h.charAt((wa[i>>2]>>((i%4)*8+4))&0xF)+h.charAt((wa[i>>2]>>((i%4)*8))&0xF));
|
|
}
|
|
return s.join(""); // string
|
|
}
|
|
d.wordToBase64=function(/* word[] */wa){
|
|
// summary
|
|
// convert an array of words to base64 encoding, should be more efficient
|
|
// than using dojox.encoding.base64
|
|
var p="=", tab="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/", s=[];
|
|
for(var i=0, l=wa.length*4; i<l; i+=3){
|
|
var t=(((wa[i>>2]>>8*(i%4))&0xFF)<<16)|(((wa[i+1>>2]>>8*((i+1)%4))&0xFF)<<8)|((wa[i+2>>2]>>8*((i+2)%4))&0xFF);
|
|
for(var j=0; j<4; j++){
|
|
if(i*8+j*6>wa.length*32){
|
|
s.push(p);
|
|
} else {
|
|
s.push(tab.charAt((t>>6*(3-j))&0x3F));
|
|
}
|
|
}
|
|
}
|
|
return s.join(""); // string
|
|
};
|
|
})();
|
|
|
|
}
|