1 line
4.7 KiB
JavaScript
1 line
4.7 KiB
JavaScript
var LZString=function(){var r=String.fromCharCode,o="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",n="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-$",e={};function t(r,o){if(!e[r]){e[r]={};for(var n=0;n<r.length;n++)e[r][r.charAt(n)]=n}return e[r][o]}var i={compressToBase64:function(r){if(null==r)return"";var n=i._compress(r,6,function(r){return o.charAt(r)});switch(n.length%4){default:case 0:return n;case 1:return n+"===";case 2:return n+"==";case 3:return n+"="}},decompressFromBase64:function(r){return null==r?"":""==r?null:i._decompress(r.length,32,function(n){return t(o,r.charAt(n))})},compressToUTF16:function(o){return null==o?"":i._compress(o,15,function(o){return r(o+32)})+" "},decompressFromUTF16:function(r){return null==r?"":""==r?null:i._decompress(r.length,16384,function(o){return r.charCodeAt(o)-32})},compressToUint8Array:function(r){for(var o=i.compress(r),n=new Uint8Array(2*o.length),e=0,t=o.length;e<t;e++){var s=o.charCodeAt(e);n[2*e]=s>>>8,n[2*e+1]=s%256}return n},decompressFromUint8Array:function(o){if(null==o)return i.decompress(o);for(var n=new Array(o.length/2),e=0,t=n.length;e<t;e++)n[e]=256*o[2*e]+o[2*e+1];var s=[];return n.forEach(function(o){s.push(r(o))}),i.decompress(s.join(""))},compressToEncodedURIComponent:function(r){return null==r?"":i._compress(r,6,function(r){return n.charAt(r)})},decompressFromEncodedURIComponent:function(r){return null==r?"":""==r?null:(r=r.replace(/ /g,"+"),i._decompress(r.length,32,function(o){return t(n,r.charAt(o))}))},compress:function(o){return i._compress(o,16,function(o){return r(o)})},_compress:function(r,o,n){if(null==r)return"";var e,t,i,s={},u={},a="",p="",c="",l=2,f=3,h=2,d=[],m=0,v=0;for(i=0;i<r.length;i+=1)if(a=r.charAt(i),Object.prototype.hasOwnProperty.call(s,a)||(s[a]=f++,u[a]=!0),p=c+a,Object.prototype.hasOwnProperty.call(s,p))c=p;else{if(Object.prototype.hasOwnProperty.call(u,c)){if(c.charCodeAt(0)<256){for(e=0;e<h;e++)m<<=1,v==o-1?(v=0,d.push(n(m)),m=0):v++;for(t=c.charCodeAt(0),e=0;e<8;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}else{for(t=1,e=0;e<h;e++)m=m<<1|t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t=0;for(t=c.charCodeAt(0),e=0;e<16;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}0==--l&&(l=Math.pow(2,h),h++),delete u[c]}else for(t=s[c],e=0;e<h;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1;0==--l&&(l=Math.pow(2,h),h++),s[p]=f++,c=String(a)}if(""!==c){if(Object.prototype.hasOwnProperty.call(u,c)){if(c.charCodeAt(0)<256){for(e=0;e<h;e++)m<<=1,v==o-1?(v=0,d.push(n(m)),m=0):v++;for(t=c.charCodeAt(0),e=0;e<8;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}else{for(t=1,e=0;e<h;e++)m=m<<1|t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t=0;for(t=c.charCodeAt(0),e=0;e<16;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}0==--l&&(l=Math.pow(2,h),h++),delete u[c]}else for(t=s[c],e=0;e<h;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1;0==--l&&(l=Math.pow(2,h),h++)}for(t=2,e=0;e<h;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1;for(;;){if(m<<=1,v==o-1){d.push(n(m));break}v++}return d.join("")},decompress:function(r){return null==r?"":""==r?null:i._decompress(r.length,32768,function(o){return r.charCodeAt(o)})},_decompress:function(o,n,e){var t,i,s,u,a,p,c,l=[],f=4,h=4,d=3,m="",v=[],g={val:e(0),position:n,index:1};for(t=0;t<3;t+=1)l[t]=t;for(s=0,a=Math.pow(2,2),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;switch(s){case 0:for(s=0,a=Math.pow(2,8),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;c=r(s);break;case 1:for(s=0,a=Math.pow(2,16),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;c=r(s);break;case 2:return""}for(l[3]=c,i=c,v.push(c);;){if(g.index>o)return"";for(s=0,a=Math.pow(2,d),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;switch(c=s){case 0:for(s=0,a=Math.pow(2,8),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;l[h++]=r(s),c=h-1,f--;break;case 1:for(s=0,a=Math.pow(2,16),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;l[h++]=r(s),c=h-1,f--;break;case 2:return v.join("")}if(0==f&&(f=Math.pow(2,d),d++),l[c])m=l[c];else{if(c!==h)return null;m=i+i.charAt(0)}v.push(m),l[h++]=i+m.charAt(0),i=m,0==--f&&(f=Math.pow(2,d),d++)}}};return i}();"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}); |