10 lines
2.3 KiB
JavaScript
10 lines
2.3 KiB
JavaScript
// Copyright (c) 2013 Pieroxy <pieroxy@pieroxy.net>
|
|
// This work is free. You can redistribute it and/or modify it
|
|
// under the terms of the WTFPL, Version 2
|
|
// For more information see LICENSE.txt or http://www.wtfpl.net/
|
|
//
|
|
// For more information, the home page:
|
|
// http://pieroxy.net/blog/pages/lz-string/testing.html
|
|
//
|
|
// LZ-based compression algorithm, version 1.4.4
|
|
var LZString=function(){var o=String.fromCharCode,i={};var n={decompressFromBase64:function(o){return null==o?"":""==o?null:n._decompress(o.length,32,function(n){return function(o,n){if(!i[o]){i[o]={};for(var t=0;t<o.length;t++)i[o][o.charAt(t)]=t}return i[o][n]}("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",o.charAt(n))})},_decompress:function(i,n,t){var r,e,a,s,p,u,l,f=[],c=4,d=4,h=3,v="",g=[],m={val:t(0),position:n,index:1};for(r=0;r<3;r+=1)f[r]=r;for(a=0,p=Math.pow(2,2),u=1;u!=p;)s=m.val&m.position,m.position>>=1,0==m.position&&(m.position=n,m.val=t(m.index++)),a|=(s>0?1:0)*u,u<<=1;switch(a){case 0:for(a=0,p=Math.pow(2,8),u=1;u!=p;)s=m.val&m.position,m.position>>=1,0==m.position&&(m.position=n,m.val=t(m.index++)),a|=(s>0?1:0)*u,u<<=1;l=o(a);break;case 1:for(a=0,p=Math.pow(2,16),u=1;u!=p;)s=m.val&m.position,m.position>>=1,0==m.position&&(m.position=n,m.val=t(m.index++)),a|=(s>0?1:0)*u,u<<=1;l=o(a);break;case 2:return""}for(f[3]=l,e=l,g.push(l);;){if(m.index>i)return"";for(a=0,p=Math.pow(2,h),u=1;u!=p;)s=m.val&m.position,m.position>>=1,0==m.position&&(m.position=n,m.val=t(m.index++)),a|=(s>0?1:0)*u,u<<=1;switch(l=a){case 0:for(a=0,p=Math.pow(2,8),u=1;u!=p;)s=m.val&m.position,m.position>>=1,0==m.position&&(m.position=n,m.val=t(m.index++)),a|=(s>0?1:0)*u,u<<=1;f[d++]=o(a),l=d-1,c--;break;case 1:for(a=0,p=Math.pow(2,16),u=1;u!=p;)s=m.val&m.position,m.position>>=1,0==m.position&&(m.position=n,m.val=t(m.index++)),a|=(s>0?1:0)*u,u<<=1;f[d++]=o(a),l=d-1,c--;break;case 2:return g.join("")}if(0==c&&(c=Math.pow(2,h),h++),f[l])v=f[l];else{if(l!==d)return null;v=e+e.charAt(0)}g.push(v),f[d++]=e+v.charAt(0),e=v,0==--c&&(c=Math.pow(2,h),h++)}}};return n}();"function"==typeof define&&define.amd?define(function(){return LZString}):"undefined"!=typeof module&&null!=module?module.exports=LZString:"undefined"!=typeof angular&&null!=angular&&angular.module("LZString",[]).factory("LZString",function(){return LZString}); |