8 lines
5.2 KiB
JavaScript
8 lines
5.2 KiB
JavaScript
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/*!
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fflate - fast JavaScript compression/decompression
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<https://101arrowz.github.io/fflate>
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Licensed under MIT. https://github.com/101arrowz/fflate/blob/master/LICENSE
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Subset included: synchronous unzip, gunzip, and unzlib
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*/
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!function(f){typeof exports=="object"&&typeof module!="undefined"?module.exports=f():typeof define=='function'&&define.amd?define([],f):(typeof window!="undefined"?window:typeof global!="undefined"?global:typeof self!="undefined"&&self).fflate=f()}(function(_e){"use strict";var _e={},r=Uint8Array,n=Uint16Array,e=Uint32Array,t=new r([0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0,0]),a=new r([0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,0,0]),i=new r([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]),o=function(r,t){for(var a=new n(31),i=0;i<31;++i)a[i]=t+=1<<r[i-1];var o=new e(a[30]);for(i=1;i<30;++i)for(var f=a[i];f<a[i+1];++f)o[f]=f-a[i]<<5|i;return[a,o]},f=o(t,2),u=f[0],v=f[1];u[28]=258,v[258]=28;for(var c=o(a,0),l=c[0],w=(c[1],new n(32768)),h=0;h<32768;++h){var s=(43690&h)>>>1|(21845&h)<<1;s=(61680&(s=(52428&s)>>>2|(13107&s)<<2))>>>4|(3855&s)<<4,w[h]=((65280&s)>>>8|(255&s)<<8)>>>1}var d=function(r,e){for(var t=r.length,a=0,i=new n(e);a<t;++a)++i[r[a]-1];var o=new n(e);for(a=0;a<e;++a)o[a]=o[a-1]+i[a-1]<<1;var f=new n(1<<e),u=15-e;for(a=0;a<t;++a)if(r[a])for(var v=a<<4|r[a],c=e-r[a],l=o[r[a]-1]++<<c,h=l|(1<<c)-1;l<=h;++l)f[w[l]>>>u]=v;return f},p=new r(288);for(h=0;h<144;++h)p[h]=8;for(h=144;h<256;++h)p[h]=9;for(h=256;h<280;++h)p[h]=7;for(h=280;h<288;++h)p[h]=8;var g=new r(32);for(h=0;h<32;++h)g[h]=5;var y=d(p,9),b=d(g,5),x=function(r){for(var n=r[0],e=1;e<r.length;++e)r[e]>n&&(n=r[e]);return n},z=function(r,n,e){var t=n/8>>0;return(r[t]|r[t+1]<<8)>>>(7&n)&e},C=function(r,n){var e=n/8>>0;return(r[e]|r[e+1]<<8|r[e+2]<<16)>>>(7&n)},m=function(r){return(r/8>>0)+(7&r&&1)},S=function(t,a,i){(null==a||a<0)&&(a=0),(null==i||i>t.length)&&(i=t.length);var o=new(t instanceof n?n:t instanceof e?e:r)(i-a);return o.set(t.subarray(a,i)),o},F=function(n,e){var o=n.length,f=!e;e||(e=new r(3*o));var v,c,w,h,s=function(n){var t=e.length;if(n>t){var a=new r(Math.max(2*t,n));a.set(e),e=a}},p=0,g=0,F=0;if(p&&!v)return e;var E=8*o;do{p=z(n,g,1);var O=z(n,g+1,3);if(g+=3,O){if(1==O)v=y,c=b,w=9,h=5;else{if(2!=O)throw"invalid block type";var U=z(n,g,31)+257,k=z(n,g+10,15)+4,A=U+z(n,g+5,31)+1;g+=14;for(var D=new r(A),T=new r(19),M=0;M<k;++M)T[i[M]]=z(n,g+3*M,7);g+=3*k;var j=x(T),q=(1<<j)-1,B=d(T,j);for(M=0;M<A;){var G=B[z(n,g,q)];if(g+=15&G,(Y=G>>>4)<16)D[M++]=Y;else{var H=0,I=0;for(16==Y?(I=3+z(n,g,3),g+=2,H=D[M-1]):17==Y?(I=3+z(n,g,7),g+=3):18==Y&&(I=11+z(n,g,127),g+=7);I--;)D[M++]=H}}var J=D.subarray(0,U),K=D.subarray(U);w=x(J),h=x(K),v=d(J,w),c=d(K,h)}if(g>E)throw"unexpected EOF";f&&s(F+131072);for(var L=(1<<w)-1,N=(1<<h)-1;;){var P=(H=v[C(n,g)&L])>>>4;if((g+=15&H)>E)throw"unexpected EOF";if(!H)throw"invalid length/literal";if(P<256)e[F++]=P;else{if(256==P)break;var Q=P-254;if(P>264){var R=t[M=P-257];Q=z(n,g,(1<<R)-1)+u[M],g+=R}var V=c[C(n,g)&N],W=V>>>4;if(!V)throw"invalid distance";g+=15&V;K=l[W];if(W>3){R=a[W];K+=C(n,g)&(1<<R)-1,g+=R}if(g>E)throw"unexpected EOF";f&&s(F+131072);for(var X=F+Q;F<X;F+=4)e[F]=e[F-K],e[F+1]=e[F+1-K],e[F+2]=e[F+2-K],e[F+3]=e[F+3-K];F=X}}}else{var Y,Z=n[(Y=m(g)+4)-4]|n[Y-3]<<8,$=Y+Z;if($>o)throw"unexpected EOF";f&&s(F+Z),e.set(n.subarray(Y,$),F),F+=Z,g=8*$}}while(!p);return F==e.length?e:S(e,0,F)},E=function(r,n){return r[n]|r[n+1]<<8},O=function(r,n){return(r[n]|r[n+1]<<8|r[n+2]<<16)+2*(r[n+3]<<23)},U=function(r){if(31!=r[0]||139!=r[1]||8!=r[2])throw"invalid gzip data";var n=r[3],e=10;4&n&&(e+=r[10]|2+(r[11]<<8));for(var t=(n>>3&1)+(n>>4&1);t>0;t-=!r[e++]);return e+(2&n)},k=function(r){var n=r.length;return(r[n-4]|r[n-3]<<8|r[n-2]<<16)+2*(r[n-1]<<23)},A=function(r){if(8!=(15&r[0])||r[0]>>>4>7||(r[0]<<8|r[1])%31)throw"invalid zlib data";if(32&r[1])throw"invalid zlib data: preset dictionaries not supported"};function D(r,n){return F(r,n)}function T(n,e){return F(n.subarray(U(n),-8),e||new r(k(n)))}_e.gunzipSync=T;function M(r,n){return F((A(r),r.subarray(2,-4)),n)}_e.unzlibSync=M;function j(r,n){var e="";if(!n&&"undefined"!=typeof TextDecoder)return(new TextDecoder).decode(r);for(var t=0;t<r.length;){var a=r[t++];a<128||n?e+=String.fromCharCode(a):a<224?e+=String.fromCharCode(
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