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pako.deflate.js 26.35 KB
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giscafer 提交于 2016-06-04 02:37 . first commit
/* pako 0.2.7 nodeca/pako */
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t.insert=0,e===T?(h(t,!0),0===t.strm.avail_out?wt:yt):t.strstart>t.block_start&&(h(t,!1),0===t.strm.avail_out)?bt:bt}function c(t,e){for(var a,n;;){if(t.lookahead<ot){if(u(t),t.lookahead<ot&&e===D)return bt;if(0===t.lookahead)break}if(a=0,t.lookahead>=ht&&(t.ins_h=(t.ins_h<<t.hash_shift^t.window[t.strstart+ht-1])&t.hash_mask,a=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart),0!==a&&t.strstart-a<=t.w_size-ot&&(t.match_length=d(t,a)),t.match_length>=ht)if(n=j._tr_tally(t,t.strstart-t.match_start,t.match_length-ht),t.lookahead-=t.match_length,t.match_length<=t.max_lazy_match&&t.lookahead>=ht){t.match_length--;do t.strstart++,t.ins_h=(t.ins_h<<t.hash_shift^t.window[t.strstart+ht-1])&t.hash_mask,a=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart;while(0!==--t.match_length);t.strstart++}else t.strstart+=t.match_length,t.match_length=0,t.ins_h=t.window[t.strstart],t.ins_h=(t.ins_h<<t.hash_shift^t.window[t.strstart+1])&t.hash_mask;else 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u=X+(h.w_bits-8<<4)<<8,f=-1;f=h.strategy>=G||h.level<2?0:h.level<6?1:6===h.level?2:3,u|=f<<6,0!==h.strstart&&(u|=_t),u+=31-u%31,h.status=pt,o(h,u),0!==h.strstart&&(o(h,t.adler>>>16),o(h,65535&t.adler)),t.adler=1}if(h.status===ut)if(h.gzhead.extra){for(_=h.pending;h.gzindex<(65535&h.gzhead.extra.length)&&(h.pending!==h.pending_buf_size||(h.gzhead.hcrc&&h.pending>_&&(t.adler=U(t.adler,h.pending_buf,h.pending-_,_)),s(t),_=h.pending,h.pending!==h.pending_buf_size));)l(h,255&h.gzhead.extra[h.gzindex]),h.gzindex++;h.gzhead.hcrc&&h.pending>_&&(t.adler=U(t.adler,h.pending_buf,h.pending-_,_)),h.gzindex===h.gzhead.extra.length&&(h.gzindex=0,h.status=ft)}else h.status=ft;if(h.status===ft)if(h.gzhead.name){_=h.pending;do{if(h.pending===h.pending_buf_size&&(h.gzhead.hcrc&&h.pending>_&&(t.adler=U(t.adler,h.pending_buf,h.pending-_,_)),s(t),_=h.pending,h.pending===h.pending_buf_size)){d=1;break}d=h.gzindex<h.gzhead.name.length?255&h.gzhead.name.charCodeAt(h.gzindex++):0,l(h,d)}while(0!==d);h.gzhead.hcrc&&h.pending>_&&(t.adler=U(t.adler,h.pending_buf,h.pending-_,_)),0===d&&(h.gzindex=0,h.status=ct)}else h.status=ct;if(h.status===ct)if(h.gzhead.comment){_=h.pending;do{if(h.pending===h.pending_buf_size&&(h.gzhead.hcrc&&h.pending>_&&(t.adler=U(t.adler,h.pending_buf,h.pending-_,_)),s(t),_=h.pending,h.pending===h.pending_buf_size)){d=1;break}d=h.gzindex<h.gzhead.comment.length?255&h.gzhead.comment.charCodeAt(h.gzindex++):0,l(h,d)}while(0!==d);h.gzhead.hcrc&&h.pending>_&&(t.adler=U(t.adler,h.pending_buf,h.pending-_,_)),0===d&&(h.status=gt)}else h.status=gt;if(h.status===gt&&(h.gzhead.hcrc?(h.pending+2>h.pending_buf_size&&s(t),h.pending+2<=h.pending_buf_size&&(l(h,255&t.adler),l(h,t.adler>>8&255),t.adler=0,h.status=pt)):h.status=pt),0!==h.pending){if(s(t),0===t.avail_out)return h.last_flush=-1,N}else if(0===t.avail_in&&r(e)<=r(a)&&e!==T)return n(t,K);if(h.status===mt&&0!==t.avail_in)return n(t,K);if(0!==t.avail_in||0!==h.lookahead||e!==D&&h.status!==mt){var c=h.strategy===G?m(h,e):h.strategy===J?p(h,e):C[h.level].func(h,e);if((c===wt||c===yt)&&(h.status=mt),c===bt||c===wt)return 0===t.avail_out&&(h.last_flush=-1),N;if(c===vt&&(e===O?j._tr_align(h):e!==L&&(j._tr_stored_block(h,0,0,!1),e===q&&(i(h.head),0===h.lookahead&&(h.strstart=0,h.block_start=0,h.insert=0))),s(t),0===t.avail_out))return h.last_flush=-1,N}return e!==T?N:h.wrap<=0?R:(2===h.wrap?(l(h,255&t.adler),l(h,t.adler>>8&255),l(h,t.adler>>16&255),l(h,t.adler>>24&255),l(h,255&t.total_in),l(h,t.total_in>>8&255),l(h,t.total_in>>16&255),l(h,t.total_in>>24&255)):(o(h,t.adler>>>16),o(h,65535&t.adler)),s(t),h.wrap>0&&(h.wrap=-h.wrap),0!==h.pending?N:R)}function A(t){var e;return t&&t.state?(e=t.state.status,e!==dt&&e!==ut&&e!==ft&&e!==ct&&e!==gt&&e!==pt&&e!==mt?n(t,H):(t.state=null,e===pt?n(t,F):N)):H}var C,S=t("../utils/common"),j=t("./trees"),E=t("./adler32"),U=t("./crc32"),I=t("./messages"),D=0,O=1,q=3,T=4,L=5,N=0,R=1,H=-2,F=-3,K=-5,M=-1,P=1,G=2,J=3,Q=4,V=0,W=2,X=8,Y=9,Z=15,$=8,tt=29,et=256,at=et+1+tt,nt=30,rt=19,it=2*at+1,st=15,ht=3,lt=258,ot=lt+ht+1,_t=32,dt=42,ut=69,ft=73,ct=91,gt=103,pt=113,mt=666,bt=1,vt=2,wt=3,yt=4,zt=3,kt=function(t,e,a,n,r){this.good_length=t,this.max_lazy=e,this.nice_length=a,this.max_chain=n,this.func=r};C=[new kt(0,0,0,0,f),new kt(4,4,8,4,c),new kt(4,5,16,8,c),new kt(4,6,32,32,c),new kt(4,4,16,16,g),new kt(8,16,32,32,g),new kt(8,16,128,128,g),new kt(8,32,128,256,g),new kt(32,128,258,1024,g),new kt(32,258,258,4096,g)],a.deflateInit=x,a.deflateInit2=k,a.deflateReset=y,a.deflateResetKeep=w,a.deflateSetHeader=z,a.deflate=B,a.deflateEnd=A,a.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":1,"./adler32":3,"./crc32":4,"./messages":6,"./trees":7}],6:[function(t,e,a){"use strict";e.exports={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"}},{}],7:[function(t,e,a){"use strict";function n(t){for(var e=t.length;--e>=0;)t[e]=0}function r(t){return 256>t?st[t]:st[256+(t>>>7)]}function i(t,e){t.pending_buf[t.pending++]=255&e,t.pending_buf[t.pending++]=e>>>8&255}function s(t,e,a){t.bi_valid>Q-a?(t.bi_buf|=e<<t.bi_valid&65535,i(t,t.bi_buf),t.bi_buf=e>>Q-t.bi_valid,t.bi_valid+=a-Q):(t.bi_buf|=e<<t.bi_valid&65535,t.bi_valid+=a)}function h(t,e,a){s(t,a[2*e],a[2*e+1])}function l(t,e){var a=0;do a|=1&t,t>>>=1,a<<=1;while(--e>0);return a>>>1}function o(t){16===t.bi_valid?(i(t,t.bi_buf),t.bi_buf=0,t.bi_valid=0):t.bi_valid>=8&&(t.pending_buf[t.pending++]=255&t.bi_buf,t.bi_buf>>=8,t.bi_valid-=8)}function _(t,e){var a,n,r,i,s,h,l=e.dyn_tree,o=e.max_code,_=e.stat_desc.static_tree,d=e.stat_desc.has_stree,u=e.stat_desc.extra_bits,f=e.stat_desc.extra_base,c=e.stat_desc.max_length,g=0;for(i=0;J>=i;i++)t.bl_count[i]=0;for(l[2*t.heap[t.heap_max]+1]=0,a=t.heap_max+1;G>a;a++)n=t.heap[a],i=l[2*l[2*n+1]+1]+1,i>c&&(i=c,g++),l[2*n+1]=i,n>o||(t.bl_count[i]++,s=0,n>=f&&(s=u[n-f]),h=l[2*n],t.opt_len+=h*(i+s),d&&(t.static_len+=h*(_[2*n+1]+s)));if(0!==g){do{for(i=c-1;0===t.bl_count[i];)i--;t.bl_count[i]--,t.bl_count[i+1]+=2,t.bl_count[c]--,g-=2}while(g>0);for(i=c;0!==i;i--)for(n=t.bl_count[i];0!==n;)r=t.heap[--a],r>o||(l[2*r+1]!==i&&(t.opt_len+=(i-l[2*r+1])*l[2*r],l[2*r+1]=i),n--)}}function d(t,e,a){var n,r,i=new Array(J+1),s=0;for(n=1;J>=n;n++)i[n]=s=s+a[n-1]<<1;for(r=0;e>=r;r++){var h=t[2*r+1];0!==h&&(t[2*r]=l(i[h]++,h))}}function u(){var t,e,a,n,r,i=new Array(J+1);for(a=0,n=0;H-1>n;n++)for(lt[n]=a,t=0;t<1<<$[n];t++)ht[a++]=n;for(ht[a-1]=n,r=0,n=0;16>n;n++)for(ot[n]=r,t=0;t<1<<tt[n];t++)st[r++]=n;for(r>>=7;M>n;n++)for(ot[n]=r<<7,t=0;t<1<<tt[n]-7;t++)st[256+r++]=n;for(e=0;J>=e;e++)i[e]=0;for(t=0;143>=t;)rt[2*t+1]=8,t++,i[8]++;for(;255>=t;)rt[2*t+1]=9,t++,i[9]++;for(;279>=t;)rt[2*t+1]=7,t++,i[7]++;for(;287>=t;)rt[2*t+1]=8,t++,i[8]++;for(d(rt,K+1,i),t=0;M>t;t++)it[2*t+1]=5,it[2*t]=l(t,5);_t=new ft(rt,$,F+1,K,J),dt=new ft(it,tt,0,M,J),ut=new ft(new Array(0),et,0,P,V)}function f(t){var e;for(e=0;K>e;e++)t.dyn_ltree[2*e]=0;for(e=0;M>e;e++)t.dyn_dtree[2*e]=0;for(e=0;P>e;e++)t.bl_tree[2*e]=0;t.dyn_ltree[2*W]=1,t.opt_len=t.static_len=0,t.last_lit=t.matches=0}function c(t){t.bi_valid>8?i(t,t.bi_buf):t.bi_valid>0&&(t.pending_buf[t.pending++]=t.bi_buf),t.bi_buf=0,t.bi_valid=0}function g(t,e,a,n){c(t),n&&(i(t,a),i(t,~a)),E.arraySet(t.pending_buf,t.window,e,a,t.pending),t.pending+=a}function p(t,e,a,n){var r=2*e,i=2*a;return t[r]<t[i]||t[r]===t[i]&&n[e]<=n[a]}function m(t,e,a){for(var n=t.heap[a],r=a<<1;r<=t.heap_len&&(r<t.heap_len&&p(e,t.heap[r+1],t.heap[r],t.depth)&&r++,!p(e,n,t.heap[r],t.depth));)t.heap[a]=t.heap[r],a=r,r<<=1;t.heap[a]=n}function b(t,e,a){var n,i,l,o,_=0;if(0!==t.last_lit)do n=t.pending_buf[t.d_buf+2*_]<<8|t.pending_buf[t.d_buf+2*_+1],i=t.pending_buf[t.l_buf+_],_++,0===n?h(t,i,e):(l=ht[i],h(t,l+F+1,e),o=$[l],0!==o&&(i-=lt[l],s(t,i,o)),n--,l=r(n),h(t,l,a),o=tt[l],0!==o&&(n-=ot[l],s(t,n,o)));while(_<t.last_lit);h(t,W,e)}function v(t,e){var a,n,r,i=e.dyn_tree,s=e.stat_desc.static_tree,h=e.stat_desc.has_stree,l=e.stat_desc.elems,o=-1;for(t.heap_len=0,t.heap_max=G,a=0;l>a;a++)0!==i[2*a]?(t.heap[++t.heap_len]=o=a,t.depth[a]=0):i[2*a+1]=0;for(;t.heap_len<2;)r=t.heap[++t.heap_len]=2>o?++o:0,i[2*r]=1,t.depth[r]=0,t.opt_len--,h&&(t.static_len-=s[2*r+1]);for(e.max_code=o,a=t.heap_len>>1;a>=1;a--)m(t,i,a);r=l;do a=t.heap[1],t.heap[1]=t.heap[t.heap_len--],m(t,i,1),n=t.heap[1],t.heap[--t.heap_max]=a,t.heap[--t.heap_max]=n,i[2*r]=i[2*a]+i[2*n],t.depth[r]=(t.depth[a]>=t.depth[n]?t.depth[a]:t.depth[n])+1,i[2*a+1]=i[2*n+1]=r,t.heap[1]=r++,m(t,i,1);while(t.heap_len>=2);t.heap[--t.heap_max]=t.heap[1],_(t,e),d(i,o,t.bl_count)}function w(t,e,a){var n,r,i=-1,s=e[1],h=0,l=7,o=4;for(0===s&&(l=138,o=3),e[2*(a+1)+1]=65535,n=0;a>=n;n++)r=s,s=e[2*(n+1)+1],++h<l&&r===s||(o>h?t.bl_tree[2*r]+=h:0!==r?(r!==i&&t.bl_tree[2*r]++,t.bl_tree[2*X]++):10>=h?t.bl_tree[2*Y]++:t.bl_tree[2*Z]++,h=0,i=r,0===s?(l=138,o=3):r===s?(l=6,o=3):(l=7,o=4))}function y(t,e,a){var n,r,i=-1,l=e[1],o=0,_=7,d=4;for(0===l&&(_=138,d=3),n=0;a>=n;n++)if(r=l,l=e[2*(n+1)+1],!(++o<_&&r===l)){if(d>o){do h(t,r,t.bl_tree);while(0!==--o)}else 0!==r?(r!==i&&(h(t,r,t.bl_tree),o--),h(t,X,t.bl_tree),s(t,o-3,2)):10>=o?(h(t,Y,t.bl_tree),s(t,o-3,3)):(h(t,Z,t.bl_tree),s(t,o-11,7));o=0,i=r,0===l?(_=138,d=3):r===l?(_=6,d=3):(_=7,d=4)}}function z(t){var e;for(w(t,t.dyn_ltree,t.l_desc.max_code),w(t,t.dyn_dtree,t.d_desc.max_code),v(t,t.bl_desc),e=P-1;e>=3&&0===t.bl_tree[2*at[e]+1];e--);return t.opt_len+=3*(e+1)+5+5+4,e}function k(t,e,a,n){var r;for(s(t,e-257,5),s(t,a-1,5),s(t,n-4,4),r=0;n>r;r++)s(t,t.bl_tree[2*at[r]+1],3);y(t,t.dyn_ltree,e-1),y(t,t.dyn_dtree,a-1)}function x(t){var e,a=4093624447;for(e=0;31>=e;e++,a>>>=1)if(1&a&&0!==t.dyn_ltree[2*e])return I;if(0!==t.dyn_ltree[18]||0!==t.dyn_ltree[20]||0!==t.dyn_ltree[26])return D;for(e=32;F>e;e++)if(0!==t.dyn_ltree[2*e])return D;return I}function B(t){gt||(u(),gt=!0),t.l_desc=new ct(t.dyn_ltree,_t),t.d_desc=new ct(t.dyn_dtree,dt),t.bl_desc=new ct(t.bl_tree,ut),t.bi_buf=0,t.bi_valid=0,f(t)}function A(t,e,a,n){s(t,(q<<1)+(n?1:0),3),g(t,e,a,!0)}function C(t){s(t,T<<1,3),h(t,W,rt),o(t)}function S(t,e,a,n){var r,i,h=0;t.level>0?(t.strm.data_type===O&&(t.strm.data_type=x(t)),v(t,t.l_desc),v(t,t.d_desc),h=z(t),r=t.opt_len+3+7>>>3,i=t.static_len+3+7>>>3,r>=i&&(r=i)):r=i=a+5,r>=a+4&&-1!==e?A(t,e,a,n):t.strategy===U||i===r?(s(t,(T<<1)+(n?1:0),3),b(t,rt,it)):(s(t,(L<<1)+(n?1:0),3),k(t,t.l_desc.max_code+1,t.d_desc.max_code+1,h+1),b(t,t.dyn_ltree,t.dyn_dtree)),f(t),n&&c(t)}function j(t,e,a){return t.pending_buf[t.d_buf+2*t.last_lit]=e>>>8&255,t.pending_buf[t.d_buf+2*t.last_lit+1]=255&e,t.pending_buf[t.l_buf+t.last_lit]=255&a,t.last_lit++,0===e?t.dyn_ltree[2*a]++:(t.matches++,e--,t.dyn_ltree[2*(ht[a]+F+1)]++,t.dyn_dtree[2*r(e)]++),t.last_lit===t.lit_bufsize-1}var E=t("../utils/common"),U=4,I=0,D=1,O=2,q=0,T=1,L=2,N=3,R=258,H=29,F=256,K=F+1+H,M=30,P=19,G=2*K+1,J=15,Q=16,V=7,W=256,X=16,Y=17,Z=18,$=[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],tt=[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],et=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],at=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],nt=512,rt=new Array(2*(K+2));n(rt);var it=new Array(2*M);n(it);var st=new Array(nt);n(st);var ht=new Array(R-N+1);n(ht);var lt=new Array(H);n(lt);var ot=new Array(M);n(ot);var _t,dt,ut,ft=function(t,e,a,n,r){this.static_tree=t,this.extra_bits=e,this.extra_base=a,this.elems=n,this.max_length=r,this.has_stree=t&&t.length},ct=function(t,e){this.dyn_tree=t,this.max_code=0,this.stat_desc=e},gt=!1;a._tr_init=B,a._tr_stored_block=A,a._tr_flush_block=S,a._tr_tally=j,a._tr_align=C},{"../utils/common":1}],8:[function(t,e,a){"use strict";function n(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}e.exports=n},{}],"/lib/deflate.js":[function(t,e,a){"use strict";function n(t,e){var a=new w(e);if(a.push(t,!0),a.err)throw a.msg;return a.result}function r(t,e){return e=e||{},e.raw=!0,n(t,e)}function i(t,e){return e=e||{},e.gzip=!0,n(t,e)}var s=t("./zlib/deflate.js"),h=t("./utils/common"),l=t("./utils/strings"),o=t("./zlib/messages"),_=t("./zlib/zstream"),d=Object.prototype.toString,u=0,f=4,c=0,g=1,p=2,m=-1,b=0,v=8,w=function(t){this.options=h.assign({level:m,method:v,chunkSize:16384,windowBits:15,memLevel:8,strategy:b,to:""},t||{});var e=this.options;e.raw&&e.windowBits>0?e.windowBits=-e.windowBits:e.gzip&&e.windowBits>0&&e.windowBits<16&&(e.windowBits+=16),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new _,this.strm.avail_out=0;var a=s.deflateInit2(this.strm,e.level,e.method,e.windowBits,e.memLevel,e.strategy);if(a!==c)throw new Error(o[a]);e.header&&s.deflateSetHeader(this.strm,e.header)};w.prototype.push=function(t,e){var a,n,r=this.strm,i=this.options.chunkSize;if(this.ended)return!1;n=e===~~e?e:e===!0?f:u,"string"==typeof t?r.input=l.string2buf(t):"[object ArrayBuffer]"===d.call(t)?r.input=new Uint8Array(t):r.input=t,r.next_in=0,r.avail_in=r.input.length;do{if(0===r.avail_out&&(r.output=new h.Buf8(i),r.next_out=0,r.avail_out=i),a=s.deflate(r,n),a!==g&&a!==c)return this.onEnd(a),this.ended=!0,!1;(0===r.avail_out||0===r.avail_in&&(n===f||n===p))&&this.onData("string"===this.options.to?l.buf2binstring(h.shrinkBuf(r.output,r.next_out)):h.shrinkBuf(r.output,r.next_out))}while((r.avail_in>0||0===r.avail_out)&&a!==g);return n===f?(a=s.deflateEnd(this.strm),this.onEnd(a),this.ended=!0,a===c):n===p?(this.onEnd(c),r.avail_out=0,!0):!0},w.prototype.onData=function(t){this.chunks.push(t)},w.prototype.onEnd=function(t){t===c&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=h.flattenChunks(this.chunks)),this.chunks=[],this.err=t,this.msg=this.strm.msg},a.Deflate=w,a.deflate=n,a.deflateRaw=r,a.gzip=i},{"./utils/common":1,"./utils/strings":2,"./zlib/deflate.js":5,"./zlib/messages":6,"./zlib/zstream":8}]},{},[])("/lib/deflate.js")});
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mapshaper-plus
mapshaper-plus
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