pako/dist/browser/pako_deflate.umd.min.js

zlib port to javascript - fast, modularized, with browser support

(function(e,t){typeof exports==`object`&&typeof module<`u`?t(exports):typeof define==`function`&&define.amd?define([`exports`],t):(e=typeof globalThis<`u`?globalThis:e||self,t(e.pako={}))})(this,function(e){Object.defineProperty(e,Symbol.toStringTag,{value:`Module`});var t=4,n=0,r=1,i=2;function a(e){let t=e.length;for(;--t>=0;)e[t]=0}var o=0,s=1,c=2,l=29,u=256,d=286,f=30,p=19,m=573,h=15,g=16,_=7,ee=256,te=16,ne=17,re=18,ie=new Uint8Array([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]),v=new Uint8Array([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]),ae=new Uint8Array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]),oe=new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]),se=512,y=Array(288*2);a(y);var b=Array(f*2);a(b);var x=Array(se);a(x);var S=Array(256);a(S);var ce=Array(l);a(ce);var C=Array(f);a(C);var le=class{constructor(e,t,n,r,i){this.static_tree=e,this.extra_bits=t,this.extra_base=n,this.elems=r,this.max_length=i,this.has_stree=e&&e.length}},ue,de,fe,pe=class{constructor(e,t){this.dyn_tree=e,this.max_code=0,this.stat_desc=t}},me=e=>e<256?x[e]:x[256+(e>>>7)],w=(e,t)=>{e.pending_buf[e.pending++]=t&255,e.pending_buf[e.pending++]=t>>>8&255},T=(e,t,n)=>{e.bi_valid>g-n?(e.bi_buf|=t<<e.bi_valid&65535,w(e,e.bi_buf),e.bi_buf=t>>g-e.bi_valid,e.bi_valid+=n-g):(e.bi_buf|=t<<e.bi_valid&65535,e.bi_valid+=n)},E=(e,t,n)=>{T(e,n[t*2],n[t*2+1])},he=(e,t)=>{let n=0;do n|=e&1,e>>>=1,n<<=1;while(--t>0);return n>>>1},ge=e=>{e.bi_valid===16?(w(e,e.bi_buf),e.bi_buf=0,e.bi_valid=0):e.bi_valid>=8&&(e.pending_buf[e.pending++]=e.bi_buf&255,e.bi_buf>>=8,e.bi_valid-=8)},_e=(e,t)=>{let n=t.dyn_tree,r=t.max_code,i=t.stat_desc.static_tree,a=t.stat_desc.has_stree,o=t.stat_desc.extra_bits,s=t.stat_desc.extra_base,c=t.stat_desc.max_length,l,u,d,f,p,g,_=0;for(f=0;f<=h;f++)e.bl_count[f]=0;for(n[e.heap[e.heap_max]*2+1]=0,l=e.heap_max+1;l<m;l++)u=e.heap[l],f=n[n[u*2+1]*2+1]+1,f>c&&(f=c,_++),n[u*2+1]=f,!(u>r)&&(e.bl_count[f]++,p=0,u>=s&&(p=o[u-s]),g=n[u*2],e.opt_len+=g*(f+p),a&&(e.static_len+=g*(i[u*2+1]+p)));if(_!==0){do{for(f=c-1;e.bl_count[f]===0;)f--;e.bl_count[f]--,e.bl_count[f+1]+=2,e.bl_count[c]--,_-=2}while(_>0);for(f=c;f!==0;f--)for(u=e.bl_count[f];u!==0;)d=e.heap[--l],!(d>r)&&(n[d*2+1]!==f&&(e.opt_len+=(f-n[d*2+1])*n[d*2],n[d*2+1]=f),u--)}},ve=(e,t,n)=>{let r=Array(16),i=0,a,o;for(a=1;a<=h;a++)i=i+n[a-1]<<1,r[a]=i;for(o=0;o<=t;o++){let t=e[o*2+1];t!==0&&(e[o*2]=he(r[t]++,t))}},ye=()=>{let e,t,n,r,i,a=Array(16);for(n=0,r=0;r<l-1;r++)for(ce[r]=n,e=0;e<1<<ie[r];e++)S[n++]=r;for(S[n-1]=r,i=0,r=0;r<16;r++)for(C[r]=i,e=0;e<1<<v[r];e++)x[i++]=r;for(i>>=7;r<f;r++)for(C[r]=i<<7,e=0;e<1<<v[r]-7;e++)x[256+i++]=r;for(t=0;t<=h;t++)a[t]=0;for(e=0;e<=143;)y[e*2+1]=8,e++,a[8]++;for(;e<=255;)y[e*2+1]=9,e++,a[9]++;for(;e<=279;)y[e*2+1]=7,e++,a[7]++;for(;e<=287;)y[e*2+1]=8,e++,a[8]++;for(ve(y,287,a),e=0;e<f;e++)b[e*2+1]=5,b[e*2]=he(e,5);ue=new le(y,ie,257,d,h),de=new le(b,v,0,f,h),fe=new le([],ae,0,p,_)},be=e=>{let t;for(t=0;t<d;t++)e.dyn_ltree[t*2]=0;for(t=0;t<f;t++)e.dyn_dtree[t*2]=0;for(t=0;t<p;t++)e.bl_tree[t*2]=0;e.dyn_ltree[ee*2]=1,e.opt_len=e.static_len=0,e.sym_next=e.matches=0},xe=e=>{e.bi_valid>8?w(e,e.bi_buf):e.bi_valid>0&&(e.pending_buf[e.pending++]=e.bi_buf),e.bi_buf=0,e.bi_valid=0},Se=(e,t,n,r)=>{let i=t*2,a=n*2;return e[i]<e[a]||e[i]===e[a]&&r[t]<=r[n]},Ce=(e,t,n)=>{let r=e.heap[n],i=n<<1;for(;i<=e.heap_len&&(i<e.heap_len&&Se(t,e.heap[i+1],e.heap[i],e.depth)&&i++,!Se(t,r,e.heap[i],e.depth));)e.heap[n]=e.heap[i],n=i,i<<=1;e.heap[n]=r},we=(e,t,n)=>{let r,i,a=0,o,s;if(e.sym_next!==0)do r=e.pending_buf[e.sym_buf+a++]&255,r+=(e.pending_buf[e.sym_buf+a++]&255)<<8,i=e.pending_buf[e.sym_buf+a++],r===0?E(e,i,t):(o=S[i],E(e,o+u+1,t),s=ie[o],s!==0&&(i-=ce[o],T(e,i,s)),r--,o=me(r),E(e,o,n),s=v[o],s!==0&&(r-=C[o],T(e,r,s)));while(a<e.sym_next);E(e,ee,t)},Te=(e,t)=>{let n=t.dyn_tree,r=t.stat_desc.static_tree,i=t.stat_desc.has_stree,a=t.stat_desc.elems,o,s,c=-1,l;for(e.heap_len=0,e.heap_max=m,o=0;o<a;o++)n[o*2]===0?n[o*2+1]=0:(e.heap[++e.heap_len]=c=o,e.depth[o]=0);for(;e.heap_len<2;)l=e.heap[++e.heap_len]=c<2?++c:0,n[l*2]=1,e.depth[l]=0,e.opt_len--,i&&(e.static_len-=r[l*2+1]);for(t.max_code=c,o=e.heap_len>>1;o>=1;o--)Ce(e,n,o);l=a;do o=e.heap[1],e.heap[1]=e.heap[e.heap_len--],Ce(e,n,1),s=e.heap[1],e.heap[--e.heap_max]=o,e.heap[--e.heap_max]=s,n[l*2]=n[o*2]+n[s*2],e.depth[l]=(e.depth[o]>=e.depth[s]?e.depth[o]:e.depth[s])+1,n[o*2+1]=n[s*2+1]=l,e.heap[1]=l++,Ce(e,n,1);while(e.heap_len>=2);e.heap[--e.heap_max]=e.heap[1],_e(e,t),ve(n,c,e.bl_count)},Ee=(e,t,n)=>{let r,i=-1,a,o=t[1],s=0,c=7,l=4;for(o===0&&(c=138,l=3),t[(n+1)*2+1]=65535,r=0;r<=n;r++)a=o,o=t[(r+1)*2+1],!(++s<c&&a===o)&&(s<l?e.bl_tree[a*2]+=s:a===0?s<=10?e.bl_tree[ne*2]++:e.bl_tree[re*2]++:(a!==i&&e.bl_tree[a*2]++,e.bl_tree[te*2]++),s=0,i=a,o===0?(c=138,l=3):a===o?(c=6,l=3):(c=7,l=4))},De=(e,t,n)=>{let r,i=-1,a,o=t[1],s=0,c=7,l=4;for(o===0&&(c=138,l=3),r=0;r<=n;r++)if(a=o,o=t[(r+1)*2+1],!(++s<c&&a===o)){if(s<l)do E(e,a,e.bl_tree);while(--s!==0);else a===0?s<=10?(E(e,ne,e.bl_tree),T(e,s-3,3)):(E(e,re,e.bl_tree),T(e,s-11,7)):(a!==i&&(E(e,a,e.bl_tree),s--),E(e,te,e.bl_tree),T(e,s-3,2));s=0,i=a,o===0?(c=138,l=3):a===o?(c=6,l=3):(c=7,l=4)}},Oe=e=>{let t;for(Ee(e,e.dyn_ltree,e.l_desc.max_code),Ee(e,e.dyn_dtree,e.d_desc.max_code),Te(e,e.bl_desc),t=p-1;t>=3&&e.bl_tree[oe[t]*2+1]===0;t--);return e.opt_len+=3*(t+1)+5+5+4,t},ke=(e,t,n,r)=>{let i;for(T(e,t-257,5),T(e,n-1,5),T(e,r-4,4),i=0;i<r;i++)T(e,e.bl_tree[oe[i]*2+1],3);De(e,e.dyn_ltree,t-1),De(e,e.dyn_dtree,n-1)},Ae=e=>{let t=4093624447,i;for(i=0;i<=31;i++,t>>>=1)if(t&1&&e.dyn_ltree[i*2]!==0)return n;if(e.dyn_ltree[18]!==0||e.dyn_ltree[20]!==0||e.dyn_ltree[26]!==0)return r;for(i=32;i<u;i++)if(e.dyn_ltree[i*2]!==0)return r;return n},je=!1,Me=e=>{je||(ye(),je=!0),e.l_desc=new pe(e.dyn_ltree,ue),e.d_desc=new pe(e.dyn_dtree,de),e.bl_desc=new pe(e.bl_tree,fe),e.bi_buf=0,e.bi_valid=0,be(e)},Ne=(e,t,n,r)=>{T(e,(o<<1)+ +!!r,3),xe(e),w(e,n),w(e,~n),n&&e.pending_buf.set(e.window.subarray(t,t+n),e.pending),e.pending+=n},Pe=e=>{T(e,s<<1,3),E(e,ee,y),ge(e)},Fe=(e,n,r,a)=>{let o,l,u=0;e.level>0?(e.strm.data_type===i&&(e.strm.data_type=Ae(e)),Te(e,e.l_desc),Te(e,e.d_desc),u=Oe(e),o=e.opt_len+3+7>>>3,l=e.static_len+3+7>>>3,l<=o&&(o=l)):o=l=r+5,r+4<=o&&n!==-1?Ne(e,n,r,a):e.strategy===t||l===o?(T(e,(s<<1)+ +!!a,3),we(e,y,b)):(T(e,(c<<1)+ +!!a,3),ke(e,e.l_desc.max_code+1,e.d_desc.max_code+1,u+1),we(e,e.dyn_ltree,e.dyn_dtree)),be(e),a&&xe(e)},D=(e,t,n)=>(e.pending_buf[e.sym_buf+e.sym_next++]=t,e.pending_buf[e.sym_buf+e.sym_next++]=t>>8,e.pending_buf[e.sym_buf+e.sym_next++]=n,t===0?e.dyn_ltree[n*2]++:(e.matches++,t--,e.dyn_ltree[(S[n]+u+1)*2]++,e.dyn_dtree[me(t)*2]++),e.sym_next===e.sym_end),Ie=(e,t,n,r)=>{let i=e&65535|0,a=e>>>16&65535|0,o=0;for(;n!==0;){o=n>2e3?2e3:n,n-=o;do i=i+t[r++]|0,a=a+i|0;while(--o);i%=65521,a%=65521}return i|a<<16|0},Le=new Uint32Array((()=>{let e,t=[];for(var n=0;n<256;n++){e=n;for(var r=0;r<8;r++)e=e&1?3988292384^e>>>1:e>>>1;t[n]=e}return t})()),O=(e,t,n,r)=>{let i=Le,a=r+n;e^=-1;for(let n=r;n<a;n++)e=e>>>8^i[(e^t[n])&255];return e^-1},k={2:`need dictionary`,1:`stream end`,0:``,"-1":`file error`,"-2":`stream error`,"-3":`data error`,"-4":`insufficient memory`,"-5":`buffer error`,"-6":`incompatible version`},Re=9,ze=573,A=3,j=258,M=262,Be=32,N=42,Ve=57,He=69,Ue=73,We=91,Ge=103,P=113,F=666,I=1,L=2,R=3,z=4,Ke=3,B=(e,t)=>(e.msg=k[t],t),qe=e=>e*2-(e>4?9:0),V=e=>{let t=e.length;for(;--t>=0;)e[t]=0},Je=e=>{let t,n,r,i=e.w_size;t=e.hash_size,r=t;do n=e.head[--r],e.head[r]=n>=i?n-i:0;while(--t);t=i,r=t;do n=e.prev[--r],e.prev[r]=n>=i?n-i:0;while(--t)},Ye=(e,t,n)=>(t<<e.hash_shift^n)&e.hash_mask,H=(e,t)=>{let n;if(e.legacy_hash)n=e.ins_h=Ye(e,e.ins_h,e.window[t+A-1]);else{let r=e.window,i=r[t]|r[t+1]<<8|r[t+2]<<16|r[t+3]<<24;n=e.ins_h=Math.imul(i,66521)+66521>>>16&e.hash_mask}let r=e.prev[t&e.w_mask]=e.head[n];return e.head[n]=t,r},U=e=>{let 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n=e.max_chain_length,r=e.strstart,i,a,o=e.prev_length,s=e.nice_match,c=e.strstart>e.w_size-M?e.strstart-(e.w_size-M):0,l=e.window,u=e.w_mask,d=e.prev,f=e.strstart+j,p=l[r+o-1],m=l[r+o];e.prev_length>=e.good_match&&(n>>=2),s>e.lookahead&&(s=e.lookahead);do{if(i=t,l[i+o]!==m||l[i+o-1]!==p||l[i]!==l[r]||l[++i]!==l[r+1])continue;r+=2,i++;do;while(l[++r]===l[++i]&&l[++r]===l[++i]&&l[++r]===l[++i]&&l[++r]===l[++i]&&l[++r]===l[++i]&&l[++r]===l[++i]&&l[++r]===l[++i]&&l[++r]===l[++i]&&r<f);if(a=j-(f-r),r=f-j,a>o){if(e.match_start=t,o=a,a>=s)break;p=l[r+o-1],m=l[r+o]}}while((t=d[t&u])>c&&--n!==0);return o<=e.lookahead?o:e.lookahead},q=e=>{let 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n=e.pending_buf_size-5>e.w_size?e.w_size:e.pending_buf_size-5,r,i,a,o=0,s=e.strm.avail_in;do{if(r=65535,a=e.bi_valid+42>>3,e.strm.avail_out<a||(a=e.strm.avail_out-a,i=e.strstart-e.block_start,r>i+e.strm.avail_in&&(r=i+e.strm.avail_in),r>a&&(r=a),r<n&&(r===0&&t!==4||t===0||r!==i+e.strm.avail_in)))break;o=+(t===4&&r===i+e.strm.avail_in),Ne(e,0,0,o),e.pending_buf[e.pending-4]=r,e.pending_buf[e.pending-3]=r>>8,e.pending_buf[e.pending-2]=~r,e.pending_buf[e.pending-1]=~r>>8,U(e.strm),i&&(i>r&&(i=r),e.strm.output.set(e.window.subarray(e.block_start,e.block_start+i),e.strm.next_out),e.strm.next_out+=i,e.strm.avail_out-=i,e.strm.total_out+=i,e.block_start+=i,r-=i),r&&(Xe(e.strm,e.strm.output,e.strm.next_out,r),e.strm.next_out+=r,e.strm.avail_out-=r,e.strm.total_out+=r)}while(o===0);return 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