CyberChef/src/js/lib/rawinflate.js

/* zlib.js 2012 - imaya [ https://github.com/imaya/zlib.js ] The MIT License */(function() {'use strict';var l=this;function p(b,e){var a=b.split("."),c=l;!(a[0]in c)&&c.execScript&&c.execScript("var "+a[0]);for(var d;a.length&&(d=a.shift());)!a.length&&void 0!==e?c[d]=e:c=c[d]?c[d]:c[d]={}};var q="undefined"!==typeof Uint8Array&&"undefined"!==typeof Uint16Array&&"undefined"!==typeof Uint32Array&&"undefined"!==typeof DataView;function t(b){var e=b.length,a=0,c=Number.POSITIVE_INFINITY,d,f,g,h,k,m,r,n,s,J;for(n=0;n<e;++n)b[n]>a&&(a=b[n]),b[n]<c&&(c=b[n]);d=1<<a;f=new (q?Uint32Array:Array)(d);g=1;h=0;for(k=2;g<=a;){for(n=0;n<e;++n)if(b[n]===g){m=0;r=h;for(s=0;s<g;++s)m=m<<1|r&1,r>>=1;J=g<<16|n;for(s=m;s<d;s+=k)f[s]=J;++h}++g;h<<=1;k<<=1}return[f,a,c]};function u(b,e){this.g=[];this.h=32768;this.c=this.f=this.d=this.k=0;this.input=q?new Uint8Array(b):b;this.l=!1;this.i=v;this.q=!1;if(e||!(e={}))e.index&&(this.d=e.index),e.bufferSize&&(this.h=e.bufferSize),e.bufferType&&(this.i=e.bufferType),e.resize&&(this.q=e.resize);switch(this.i){case w:this.a=32768;this.b=new (q?Uint8Array:Array)(32768+this.h+258);break;case v:this.a=0;this.b=new (q?Uint8Array:Array)(this.h);this.e=this.v;this.m=this.s;this.j=this.t;break;default:throw Error("invalid inflate mode");
}}var w=0,v=1;
u.prototype.u=function(){for(;!this.l;){var b=x(this,3);b&1&&(this.l=!0);b>>>=1;switch(b){case 0:var e=this.input,a=this.d,c=this.b,d=this.a,f=e.length,g=void 0,h=void 0,k=c.length,m=void 0;this.c=this.f=0;if(a+1>=f)throw Error("invalid uncompressed block header: LEN");g=e[a++]|e[a++]<<8;if(a+1>=f)throw Error("invalid uncompressed block header: NLEN");h=e[a++]|e[a++]<<8;if(g===~h)throw Error("invalid uncompressed block header: length verify");if(a+g>e.length)throw Error("input buffer is broken");switch(this.i){case w:for(;d+
g>c.length;){m=k-d;g-=m;if(q)c.set(e.subarray(a,a+m),d),d+=m,a+=m;else for(;m--;)c[d++]=e[a++];this.a=d;c=this.e();d=this.a}break;case v:for(;d+g>c.length;)c=this.e({o:2});break;default:throw Error("invalid inflate mode");}if(q)c.set(e.subarray(a,a+g),d),d+=g,a+=g;else for(;g--;)c[d++]=e[a++];this.d=a;this.a=d;this.b=c;break;case 1:this.j(y,z);break;case 2:A(this);break;default:throw Error("unknown BTYPE: "+b);}}return this.m()};
var B=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],C=q?new Uint16Array(B):B,D=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,258,258],E=q?new Uint16Array(D):D,F=[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],G=q?new Uint8Array(F):F,H=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577],I=q?new Uint16Array(H):H,K=[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],L=q?new Uint8Array(K):K,M=new (q?Uint8Array:Array)(288),N,O;N=0;for(O=M.length;N<O;++N)M[N]=143>=N?8:255>=N?9:279>=N?7:8;var y=t(M),P=new (q?Uint8Array:Array)(30),Q,R;Q=0;for(R=P.length;Q<R;++Q)P[Q]=5;var z=t(P);function x(b,e){for(var a=b.f,c=b.c,d=b.input,f=b.d,g=d.length,h;c<e;){if(f>=g)throw Error("input buffer is broken");a|=d[f++]<<c;c+=8}h=a&(1<<e)-1;b.f=a>>>e;b.c=c-e;b.d=f;return h}
function S(b,e){for(var a=b.f,c=b.c,d=b.input,f=b.d,g=d.length,h=e[0],k=e[1],m,r;c<k&&!(f>=g);)a|=d[f++]<<c,c+=8;m=h[a&(1<<k)-1];r=m>>>16;b.f=a>>r;b.c=c-r;b.d=f;return m&65535}
function A(b){function e(a,b,c){var e,d=this.p,f,g;for(g=0;g<a;)switch(e=S(this,b),e){case 16:for(f=3+x(this,2);f--;)c[g++]=d;break;case 17:for(f=3+x(this,3);f--;)c[g++]=0;d=0;break;case 18:for(f=11+x(this,7);f--;)c[g++]=0;d=0;break;default:d=c[g++]=e}this.p=d;return c}var a=x(b,5)+257,c=x(b,5)+1,d=x(b,4)+4,f=new (q?Uint8Array:Array)(C.length),g,h,k,m;for(m=0;m<d;++m)f[C[m]]=x(b,3);if(!q){m=d;for(d=f.length;m<d;++m)f[C[m]]=0}g=t(f);h=new (q?Uint8Array:Array)(a);k=new (q?Uint8Array:Array)(c);b.p=0;
b.j(t(e.call(b,a,g,h)),t(e.call(b,c,g,k)))}u.prototype.j=function(b,e){var a=this.b,c=this.a;this.n=b;for(var d=a.length-258,f,g,h,k;256!==(f=S(this,b));)if(256>f)c>=d&&(this.a=c,a=this.e(),c=this.a),a[c++]=f;else{g=f-257;k=E[g];0<G[g]&&(k+=x(this,G[g]));f=S(this,e);h=I[f];0<L[f]&&(h+=x(this,L[f]));c>=d&&(this.a=c,a=this.e(),c=this.a);for(;k--;)a[c]=a[c++-h]}for(;8<=this.c;)this.c-=8,this.d--;this.a=c};
u.prototype.t=function(b,e){var a=this.b,c=this.a;this.n=b;for(var d=a.length,f,g,h,k;256!==(f=S(this,b));)if(256>f)c>=d&&(a=this.e(),d=a.length),a[c++]=f;else{g=f-257;k=E[g];0<G[g]&&(k+=x(this,G[g]));f=S(this,e);h=I[f];0<L[f]&&(h+=x(this,L[f]));c+k>d&&(a=this.e(),d=a.length);for(;k--;)a[c]=a[c++-h]}for(;8<=this.c;)this.c-=8,this.d--;this.a=c};
u.prototype.e=function(){var b=new (q?Uint8Array:Array)(this.a-32768),e=this.a-32768,a,c,d=this.b;if(q)b.set(d.subarray(32768,b.length));else{a=0;for(c=b.length;a<c;++a)b[a]=d[a+32768]}this.g.push(b);this.k+=b.length;if(q)d.set(d.subarray(e,e+32768));else for(a=0;32768>a;++a)d[a]=d[e+a];this.a=32768;return d};
u.prototype.v=function(b){var e,a=this.input.length/this.d+1|0,c,d,f,g=this.input,h=this.b;b&&("number"===typeof b.o&&(a=b.o),"number"===typeof b.r&&(a+=b.r));2>a?(c=(g.length-this.d)/this.n[2],f=258*(c/2)|0,d=f<h.length?h.length+f:h.length<<1):d=h.length*a;q?(e=new Uint8Array(d),e.set(h)):e=h;return this.b=e};
u.prototype.m=function(){var b=0,e=this.b,a=this.g,c,d=new (q?Uint8Array:Array)(this.k+(this.a-32768)),f,g,h,k;if(0===a.length)return q?this.b.subarray(32768,this.a):this.b.slice(32768,this.a);f=0;for(g=a.length;f<g;++f){c=a[f];h=0;for(k=c.length;h<k;++h)d[b++]=c[h]}f=32768;for(g=this.a;f<g;++f)d[b++]=e[f];this.g=[];return this.buffer=d};
u.prototype.s=function(){var b,e=this.a;q?this.q?(b=new Uint8Array(e),b.set(this.b.subarray(0,e))):b=this.b.subarray(0,e):(this.b.length>e&&(this.b.length=e),b=this.b);return this.buffer=b};p("Zlib.RawInflate",u);p("Zlib.RawInflate.prototype.decompress",u.prototype.u);var T={ADAPTIVE:v,BLOCK:w},U,V,W,X;if(Object.keys)U=Object.keys(T);else for(V in U=[],W=0,T)U[W++]=V;W=0;for(X=U.length;W<X;++W)V=U[W],p("Zlib.RawInflate.BufferType."+V,T[V]);}).call(this);