pako/dist/browser/pako_deflate.esm.min.mjs

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

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ie=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}},ae,oe,se,ce=class{constructor(e,t){this.dyn_tree=e,this.max_code=0,this.stat_desc=t}},le=e=>e<256?b[e]:b[256+(e>>>7)],C=(e,t)=>{e.pending_buf[e.pending++]=t&255,e.pending_buf[e.pending++]=t>>>8&255},w=(e,t,n)=>{e.bi_valid>d-n?(e.bi_buf|=t<<e.bi_valid&65535,C(e,e.bi_buf),e.bi_buf=t>>d-e.bi_valid,e.bi_valid+=n-d):(e.bi_buf|=t<<e.bi_valid&65535,e.bi_valid+=n)},T=(e,t,n)=>{w(e,n[t*2],n[t*2+1])},ue=(e,t)=>{let n=0;do n|=e&1,e>>>=1,n<<=1;while(--t>0);return n>>>1},de=e=>{e.bi_valid===16?(C(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)},fe=(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,d,f,p,m,h,g,_=0;for(m=0;m<=u;m++)e.bl_count[m]=0;for(n[e.heap[e.heap_max]*2+1]=0,d=e.heap_max+1;d<l;d++)f=e.heap[d],m=n[n[f*2+1]*2+1]+1,m>c&&(m=c,_++),n[f*2+1]=m,!(f>r)&&(e.bl_count[m]++,h=0,f>=s&&(h=o[f-s]),g=n[f*2],e.opt_len+=g*(m+h),a&&(e.static_len+=g*(i[f*2+1]+h)));if(_!==0){do{for(m=c-1;e.bl_count[m]===0;)m--;e.bl_count[m]--,e.bl_count[m+1]+=2,e.bl_count[c]--,_-=2}while(_>0);for(m=c;m!==0;m--)for(f=e.bl_count[m];f!==0;)p=e.heap[--d],!(p>r)&&(n[p*2+1]!==m&&(e.opt_len+=(m-n[p*2+1])*n[p*2],n[p*2+1]=m),f--)}},pe=(e,t,n)=>{let r=Array(16),i=0,a,o;for(a=1;a<=u;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]=ue(r[t]++,t))}},me=()=>{let e,t,n,r,a,l=Array(16);for(n=0,r=0;r<i-1;r++)for(re[r]=n,e=0;e<1<<g[r];e++)x[n++]=r;for(x[n-1]=r,a=0,r=0;r<16;r++)for(S[r]=a,e=0;e<1<<_[r];e++)b[a++]=r;for(a>>=7;r<s;r++)for(S[r]=a<<7,e=0;e<1<<_[r]-7;e++)b[256+a++]=r;for(t=0;t<=u;t++)l[t]=0;for(e=0;e<=143;)v[e*2+1]=8,e++,l[8]++;for(;e<=255;)v[e*2+1]=9,e++,l[9]++;for(;e<=279;)v[e*2+1]=7,e++,l[7]++;for(;e<=287;)v[e*2+1]=8,e++,l[8]++;for(pe(v,287,l),e=0;e<s;e++)y[e*2+1]=5,y[e*2]=ue(e,5);ae=new ie(v,g,257,o,u),oe=new ie(y,_,0,s,u),se=new ie([],ee,0,c,7)},he=e=>{let t;for(t=0;t<o;t++)e.dyn_ltree[t*2]=0;for(t=0;t<s;t++)e.dyn_dtree[t*2]=0;for(t=0;t<c;t++)e.bl_tree[t*2]=0;e.dyn_ltree[f*2]=1,e.opt_len=e.static_len=0,e.sym_next=e.matches=0},ge=e=>{e.bi_valid>8?C(e,e.bi_buf):e.bi_valid>0&&(e.pending_buf[e.pending++]=e.bi_buf),e.bi_buf=0,e.bi_valid=0},_e=(e,t,n,r)=>{let i=t*2,a=n*2;return e[i]<e[a]||e[i]===e[a]&&r[t]<=r[n]},ve=(e,t,n)=>{let r=e.heap[n],i=n<<1;for(;i<=e.heap_len&&(i<e.heap_len&&_e(t,e.heap[i+1],e.heap[i],e.depth)&&i++,!_e(t,r,e.heap[i],e.depth));)e.heap[n]=e.heap[i],n=i,i<<=1;e.heap[n]=r},ye=(e,t,n)=>{let r,i,o=0,s,c;if(e.sym_next!==0)do r=e.pending_buf[e.sym_buf+o++]&255,r+=(e.pending_buf[e.sym_buf+o++]&255)<<8,i=e.pending_buf[e.sym_buf+o++],r===0?T(e,i,t):(s=x[i],T(e,s+a+1,t),c=g[s],c!==0&&(i-=re[s],w(e,i,c)),r--,s=le(r),T(e,s,n),c=_[s],c!==0&&(r-=S[s],w(e,r,c)));while(o<e.sym_next);T(e,f,t)},be=(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,u;for(e.heap_len=0,e.heap_max=l,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;)u=e.heap[++e.heap_len]=c<2?++c:0,n[u*2]=1,e.depth[u]=0,e.opt_len--,i&&(e.static_len-=r[u*2+1]);for(t.max_code=c,o=e.heap_len>>1;o>=1;o--)ve(e,n,o);u=a;do o=e.heap[1],e.heap[1]=e.heap[e.heap_len--],ve(e,n,1),s=e.heap[1],e.heap[--e.heap_max]=o,e.heap[--e.heap_max]=s,n[u*2]=n[o*2]+n[s*2],e.depth[u]=(e.depth[o]>=e.depth[s]?e.depth[o]:e.depth[s])+1,n[o*2+1]=n[s*2+1]=u,e.heap[1]=u++,ve(e,n,1);while(e.heap_len>=2);e.heap[--e.heap_max]=e.heap[1],fe(e,t),pe(n,c,e.bl_count)},xe=(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[m*2]++:e.bl_tree[h*2]++:(a!==i&&e.bl_tree[a*2]++,e.bl_tree[p*2]++),s=0,i=a,o===0?(c=138,l=3):a===o?(c=6,l=3):(c=7,l=4))},Se=(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 T(e,a,e.bl_tree);while(--s!==0);else a===0?s<=10?(T(e,m,e.bl_tree),w(e,s-3,3)):(T(e,h,e.bl_tree),w(e,s-11,7)):(a!==i&&(T(e,a,e.bl_tree),s--),T(e,p,e.bl_tree),w(e,s-3,2));s=0,i=a,o===0?(c=138,l=3):a===o?(c=6,l=3):(c=7,l=4)}},Ce=e=>{let t;for(xe(e,e.dyn_ltree,e.l_desc.max_code),xe(e,e.dyn_dtree,e.d_desc.max_code),be(e,e.bl_desc),t=c-1;t>=3&&e.bl_tree[te[t]*2+1]===0;t--);return e.opt_len+=3*(t+1)+5+5+4,t},we=(e,t,n,r)=>{let i;for(w(e,t-257,5),w(e,n-1,5),w(e,r-4,4),i=0;i<r;i++)w(e,e.bl_tree[te[i]*2+1],3);Se(e,e.dyn_ltree,t-1),Se(e,e.dyn_dtree,n-1)},Te=n=>{let r=4093624447,i;for(i=0;i<=31;i++,r>>>=1)if(r&1&&n.dyn_ltree[i*2]!==0)return e;if(n.dyn_ltree[18]!==0||n.dyn_ltree[20]!==0||n.dyn_ltree[26]!==0)return t;for(i=32;i<a;i++)if(n.dyn_ltree[i*2]!==0)return t;return e},Ee=!1,De=e=>{Ee||(me(),Ee=!0),e.l_desc=new ce(e.dyn_ltree,ae),e.d_desc=new ce(e.dyn_dtree,oe),e.bl_desc=new ce(e.bl_tree,se),e.bi_buf=0,e.bi_valid=0,he(e)},E=(e,t,n,r)=>{w(e,0+ +!!r,3),ge(e),C(e,n),C(e,~n),n&&e.pending_buf.set(e.window.subarray(t,t+n),e.pending),e.pending+=n},Oe=e=>{w(e,r<<1,3),T(e,f,v),de(e)},ke=(e,t,n,i)=>{let a,o,s=0;e.level>0?(e.strm.data_type===2&&(e.strm.data_type=Te(e)),be(e,e.l_desc),be(e,e.d_desc),s=Ce(e),a=e.opt_len+3+7>>>3,o=e.static_len+3+7>>>3,o<=a&&(a=o)):a=o=n+5,n+4<=a&&t!==-1?E(e,t,n,i):e.strategy===4||o===a?(w(e,(r<<1)+ +!!i,3),ye(e,v,y)):(w(e,4+ +!!i,3),we(e,e.l_desc.max_code+1,e.d_desc.max_code+1,s+1),ye(e,e.dyn_ltree,e.dyn_dtree)),he(e),i&&ge(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[(x[n]+a+1)*2]++,e.dyn_dtree[le(t)*2]++),e.sym_next===e.sym_end),Ae=(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},je=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=je,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`},Me=9,Ne=573,A=3,j=258,M=262,Pe=32,N=42,Fe=57,Ie=69,Le=73,Re=91,ze=103,P=113,F=666,I=1,L=2,R=3,z=4,Be=3,B=(e,t)=>(e.msg=k[t],t),Ve=e=>e*2-(e>4?9:0),V=e=>{let t=e.length;for(;--t>=0;)e[t]=0},He=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)},Ue=(e,t,n)=>(t<<e.hash_shift^n)&e.hash_mask,H=(e,t)=>{let n;if(e.legacy_hash)n=e.ins_h=Ue(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 t=e.state,n=t.pending;n>e.avail_out&&(n=e.avail_out),n!==0&&(e.output.set(t.pending_buf.subarray(t.pending_out,t.pending_out+n),e.next_out),e.next_out+=n,t.pending_out+=n,e.total_out+=n,e.avail_out-=n,t.pending-=n,t.pending===0&&(t.pending_out=0))},W=(e,t)=>{ke(e,e.block_start>=0?e.block_start:-1,e.strstart-e.block_start,t),e.block_start=e.strstart,U(e.strm)},G=(e,t)=>{e.pending_buf[e.pending++]=t},K=(e,t)=>{e.pending_buf[e.pending++]=t>>>8&255,e.pending_buf[e.pending++]=t&255},We=(e,t,n,r)=>{let i=e.avail_in;return i>r&&(i=r),i===0?0:(e.avail_in-=i,t.set(e.input.subarray(e.next_in,e.next_in+i),n),e.state.wrap===1?e.adler=Ae(e.adler,t,i,n):e.state.wrap===2&&(e.adler=O(e.adler,t,i,n)),e.next_in+=i,e.total_in+=i,i)},Ge=(e,t)=>{let 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 t=e.w_size,n,r,i;do{if(r=e.window_size-e.lookahead-e.strstart,e.strstart>=t+(t-M)&&(e.window.set(e.window.subarray(t,t+t-r),0),e.match_start-=t,e.strstart-=t,e.block_start-=t,e.insert>e.strstart&&(e.insert=e.strstart),He(e),r+=t),e.strm.avail_in===0)break;if(n=We(e.strm,e.window,e.strstart+e.lookahead,r),e.lookahead+=n,!e.legacy_hash){if(e.lookahead+e.insert>A)for(i=e.strstart-e.insert;e.insert&&(H(e,i),i++,e.insert--,!(e.lookahead+e.insert<=A)););}else if(e.lookahead+e.insert>=A)for(i=e.strstart-e.insert,e.ins_h=e.window[i],e.ins_h=Ue(e,e.ins_h,e.window[i+1]);e.insert&&(H(e,i),i++,e.insert--,!(e.lookahead+e.insert<A)););}while(e.lookahead<M&&e.strm.avail_in!==0)},Ke=(e,t)=>{let 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),E(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&&(We(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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