openmedialibrary_reader/epub.js/js/libs/zip.min.js

15 lines
100 KiB
JavaScript
Raw Normal View History

2019-01-24 08:12:25 +00:00
/*!
JSZip v3.1.5 - A JavaScript class for generating and reading zip files
<http://stuartk.com/jszip>
(c) 2009-2016 Stuart Knightley <stuart [at] stuartk.com>
Dual licenced under the MIT license or GPLv3. See https://raw.github.com/Stuk/jszip/master/LICENSE.markdown.
JSZip uses the library pako released under the MIT license :
https://github.com/nodeca/pako/blob/master/LICENSE
*/
!function(a){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=a();else if("function"==typeof define&&define.amd)define([],a);else{var b;b="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,b.JSZip=a()}}(function(){return function a(b,c,d){function e(g,h){if(!c[g]){if(!b[g]){var i="function"==typeof require&&require;if(!h&&i)return i(g,!0);if(f)return f(g,!0);var j=new Error("Cannot find module '"+g+"'");throw j.code="MODULE_NOT_FOUND",j}var k=c[g]={exports:{}};b[g][0].call(k.exports,function(a){var c=b[g][1][a];return e(c?c:a)},k,k.exports,a,b,c,d)}return c[g].exports}for(var f="function"==typeof require&&require,g=0;g<d.length;g++)e(d[g]);return e}({1:[function(a,b,c){"use strict";var d=a("./utils"),e=a("./support"),f="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";c.encode=function(a){for(var b,c,e,g,h,i,j,k=[],l=0,m=a.length,n=m,o="string"!==d.getTypeOf(a);l<a.length;)n=m-l,o?(b=a[l++],c=l<m?a[l++]:0,e=l<m?a[l++]:0):(b=a.charCodeAt(l++),c=l<m?a.charCodeAt(l++):0,e=l<m?a.charCodeAt(l++):0),g=b>>2,h=(3&b)<<4|c>>4,i=n>1?(15&c)<<2|e>>6:64,j=n>2?63&e:64,k.push(f.charAt(g)+f.charAt(h)+f.charAt(i)+f.charAt(j));return k.join("")},c.decode=function(a){var b,c,d,g,h,i,j,k=0,l=0,m="data:";if(a.substr(0,m.length)===m)throw new Error("Invalid base64 input, it looks like a data url.");a=a.replace(/[^A-Za-z0-9\+\/\=]/g,"");var n=3*a.length/4;if(a.charAt(a.length-1)===f.charAt(64)&&n--,a.charAt(a.length-2)===f.charAt(64)&&n--,n%1!==0)throw new Error("Invalid base64 input, bad content length.");var o;for(o=e.uint8array?new Uint8Array(0|n):new Array(0|n);k<a.length;)g=f.indexOf(a.charAt(k++)),h=f.indexOf(a.charAt(k++)),i=f.indexOf(a.charAt(k++)),j=f.indexOf(a.charAt(k++)),b=g<<2|h>>4,c=(15&h)<<4|i>>2,d=(3&i)<<6|j,o[l++]=b,64!==i&&(o[l++]=c),64!==j&&(o[l++]=d);return o}},{"./support":30,"./utils":32}],2:[function(a,b,c){"use strict";function d(a,b,c,d,e){this.compressedSize=a,this.uncompressedSize=b,this.crc32=c,this.compression=d,this.compressedContent=e}var e=a("./external"),f=a("./stream/DataWorker"),g=a("./stream/DataLengthProbe"),h=a("./stream/Crc32Probe"),g=a("./stream/DataLengthProbe");d.prototype={getContentWorker:function(){var a=new f(e.Promise.resolve(this.compressedContent)).pipe(this.compression.uncompressWorker()).pipe(new g("data_length")),b=this;return a.on("end",function(){if(this.streamInfo.data_length!==b.uncompressedSize)throw new Error("Bug : uncompressed data size mismatch")}),a},getCompressedWorker:function(){return new f(e.Promise.resolve(this.compressedContent)).withStreamInfo("compressedSize",this.compressedSize).withStreamInfo("uncompressedSize",this.uncompressedSize).withStreamInfo("crc32",this.crc32).withStreamInfo("compression",this.compression)}},d.createWorkerFrom=function(a,b,c){return a.pipe(new h).pipe(new g("uncompressedSize")).pipe(b.compressWorker(c)).pipe(new g("compressedSize")).withStreamInfo("compression",b)},b.exports=d},{"./external":6,"./stream/Crc32Probe":25,"./stream/DataLengthProbe":26,"./stream/DataWorker":27}],3:[function(a,b,c){"use strict";var d=a("./stream/GenericWorker");c.STORE={magic:"\0\0",compressWorker:function(a){return new d("STORE compression")},uncompressWorker:function(){return new d("STORE decompression")}},c.DEFLATE=a("./flate")},{"./flate":7,"./stream/GenericWorker":28}],4:[function(a,b,c){"use strict";function d(){for(var a,b=[],c=0;c<256;c++){a=c;for(var d=0;d<8;d++)a=1&a?3988292384^a>>>1:a>>>1;b[c]=a}return b}function e(a,b,c,d){var e=h,f=d+c;a^=-1;for(var g=d;g<f;g++)a=a>>>8^e[255&(a^b[g])];return a^-1}function f(a,b,c,d){var e=h,f=d+c;a^=-1;for(var g=d;g<f;g++)a=a>>>8^e[255&(a^b.charCodeAt(g))];return a^-1}var g=a("./utils"),h=d();b.exports=function(a,b){if("undefined"==typeof a||!a.length)return 0;var c="string"!==g.getTypeOf(a);return c?e(0|b,a,a.length,0):f(0|b,a,a.length,0)}},{"./utils":32}],5:[function(a,b,c){"use strict";c.base64=!1,c.binary=!1,c.dir=!1,c.createFolders=!0,c.date=null,c.compression=null,c.compressionOptions=null,c.comment=null,c.unixPermissions=null,c
return b}var i=a("./support"),j=a("./base64"),k=a("./nodejsUtils"),l=a("core-js/library/fn/set-immediate"),m=a("./external");c.newBlob=function(a,b){c.checkSupport("blob");try{return new Blob([a],{type:b})}catch(d){try{var e=self.BlobBuilder||self.WebKitBlobBuilder||self.MozBlobBuilder||self.MSBlobBuilder,f=new e;return f.append(a),f.getBlob(b)}catch(d){throw new Error("Bug : can't construct the Blob.")}}};var n={stringifyByChunk:function(a,b,c){var d=[],e=0,f=a.length;if(f<=c)return String.fromCharCode.apply(null,a);for(;e<f;)"array"===b||"nodebuffer"===b?d.push(String.fromCharCode.apply(null,a.slice(e,Math.min(e+c,f)))):d.push(String.fromCharCode.apply(null,a.subarray(e,Math.min(e+c,f)))),e+=c;return d.join("")},stringifyByChar:function(a){for(var b="",c=0;c<a.length;c++)b+=String.fromCharCode(a[c]);return b},applyCanBeUsed:{uint8array:function(){try{return i.uint8array&&1===String.fromCharCode.apply(null,new Uint8Array(1)).length}catch(a){return!1}}(),nodebuffer:function(){try{return i.nodebuffer&&1===String.fromCharCode.apply(null,k.allocBuffer(1)).length}catch(a){return!1}}()}};c.applyFromCharCode=g;var o={};o.string={string:e,array:function(a){return f(a,new Array(a.length))},arraybuffer:function(a){return o.string.uint8array(a).buffer},uint8array:function(a){return f(a,new Uint8Array(a.length))},nodebuffer:function(a){return f(a,k.allocBuffer(a.length))}},o.array={string:g,array:e,arraybuffer:function(a){return new Uint8Array(a).buffer},uint8array:function(a){return new Uint8Array(a)},nodebuffer:function(a){return k.newBufferFrom(a)}},o.arraybuffer={string:function(a){return g(new Uint8Array(a))},array:function(a){return h(new Uint8Array(a),new Array(a.byteLength))},arraybuffer:e,uint8array:function(a){return new Uint8Array(a)},nodebuffer:function(a){return k.newBufferFrom(new Uint8Array(a))}},o.uint8array={string:g,array:function(a){return h(a,new Array(a.length))},arraybuffer:function(a){return a.buffer},uint8array:e,nodebuffer:function(a){return k.newBufferFrom(a)}},o.nodebuffer={string:g,array:function(a){return h(a,new Array(a.length))},arraybuffer:function(a){return o.nodebuffer.uint8array(a).buffer},uint8array:function(a){return h(a,new Uint8Array(a.length))},nodebuffer:e},c.transformTo=function(a,b){if(b||(b=""),!a)return b;c.checkSupport(a);var d=c.getTypeOf(b),e=o[d][a](b);return e},c.getTypeOf=function(a){return"string"==typeof a?"string":"[object Array]"===Object.prototype.toString.call(a)?"array":i.nodebuffer&&k.isBuffer(a)?"nodebuffer":i.uint8array&&a instanceof Uint8Array?"uint8array":i.arraybuffer&&a instanceof ArrayBuffer?"arraybuffer":void 0},c.checkSupport=function(a){var b=i[a.toLowerCase()];if(!b)throw new Error(a+" is not supported by this platform")},c.MAX_VALUE_16BITS=65535,c.MAX_VALUE_32BITS=-1,c.pretty=function(a){var b,c,d="";for(c=0;c<(a||"").length;c++)b=a.charCodeAt(c),d+="\\x"+(b<16?"0":"")+b.toString(16).toUpperCase();return d},c.delay=function(a,b,c){l(function(){a.apply(c||null,b||[])})},c.inherits=function(a,b){var c=function(){};c.prototype=b.prototype,a.prototype=new c},c.extend=function(){var a,b,c={};for(a=0;a<arguments.length;a++)for(b in arguments[a])arguments[a].hasOwnProperty(b)&&"undefined"==typeof c[b]&&(c[b]=arguments[a][b]);return c},c.prepareContent=function(a,b,e,f,g){var h=m.Promise.resolve(b).then(function(a){var b=i.blob&&(a instanceof Blob||["[object File]","[object Blob]"].indexOf(Object.prototype.toString.call(a))!==-1);return b&&"undefined"!=typeof FileReader?new m.Promise(function(b,c){var d=new FileReader;d.onload=function(a){b(a.target.result)},d.onerror=function(a){c(a.target.error)},d.readAsArrayBuffer(a)}):a});return h.then(function(b){var h=c.getTypeOf(b);return h?("arraybuffer"===h?b=c.transformTo("uint8array",b):"string"===h&&(g?b=j.decode(b):e&&f!==!0&&(b=d(b))),b):m.Promise.reject(new Error("Can't read the data of '"+a+"'. Is it in a supported JavaScript type (String, Blob, ArrayBuffer, etc) ?"))})}},{"./base64":1,"./external":6,"./nodejsUtils":14,"./support":30,"core-js/library/fn/set-immediate":36}],33:[function(a,b,c){"use strict";function d(a)
}b.exports=d},{}],65:[function(a,b,c){"use strict";b.exports={Z_NO_FLUSH:0,Z_PARTIAL_FLUSH:1,Z_SYNC_FLUSH:2,Z_FULL_FLUSH:3,Z_FINISH:4,Z_BLOCK:5,Z_TREES:6,Z_OK:0,Z_STREAM_END:1,Z_NEED_DICT:2,Z_ERRNO:-1,Z_STREAM_ERROR:-2,Z_DATA_ERROR:-3,Z_BUF_ERROR:-5,Z_NO_COMPRESSION:0,Z_BEST_SPEED:1,Z_BEST_COMPRESSION:9,Z_DEFAULT_COMPRESSION:-1,Z_FILTERED:1,Z_HUFFMAN_ONLY:2,Z_RLE:3,Z_FIXED:4,Z_DEFAULT_STRATEGY:0,Z_BINARY:0,Z_TEXT:1,Z_UNKNOWN:2,Z_DEFLATED:8}},{}],66:[function(a,b,c){"use strict";function d(){for(var a,b=[],c=0;c<256;c++){a=c;for(var d=0;d<8;d++)a=1&a?3988292384^a>>>1:a>>>1;b[c]=a}return b}function e(a,b,c,d){var e=f,g=d+c;a^=-1;for(var h=d;h<g;h++)a=a>>>8^e[255&(a^b[h])];return a^-1}var f=d();b.exports=e},{}],67:[function(a,b,c){"use strict";function d(a,b){return a.msg=I[b],b}function e(a){return(a<<1)-(a>4?9:0)}function f(a){for(var b=a.length;--b>=0;)a[b]=0}function g(a){var b=a.state,c=b.pending;c>a.avail_out&&(c=a.avail_out),0!==c&&(E.arraySet(a.output,b.pending_buf,b.pending_out,c,a.next_out),a.next_out+=c,b.pending_out+=c,a.total_out+=c,a.avail_out-=c,b.pending-=c,0===b.pending&&(b.pending_out=0))}function h(a,b){F._tr_flush_block(a,a.block_start>=0?a.block_start:-1,a.strstart-a.block_start,b),a.block_start=a.strstart,g(a.strm)}function i(a,b){a.pending_buf[a.pending++]=b}function j(a,b){a.pending_buf[a.pending++]=b>>>8&255,a.pending_buf[a.pending++]=255&b}function k(a,b,c,d){var e=a.avail_in;return e>d&&(e=d),0===e?0:(a.avail_in-=e,E.arraySet(b,a.input,a.next_in,e,c),1===a.state.wrap?a.adler=G(a.adler,b,e,c):2===a.state.wrap&&(a.adler=H(a.adler,b,e,c)),a.next_in+=e,a.total_in+=e,e)}function l(a,b){var c,d,e=a.max_chain_length,f=a.strstart,g=a.prev_length,h=a.nice_match,i=a.strstart>a.w_size-la?a.strstart-(a.w_size-la):0,j=a.window,k=a.w_mask,l=a.prev,m=a.strstart+ka,n=j[f+g-1],o=j[f+g];a.prev_length>=a.good_match&&(e>>=2),h>a.lookahead&&(h=a.lookahead);do if(c=b,j[c+g]===o&&j[c+g-1]===n&&j[c]===j[f]&&j[++c]===j[f+1]){f+=2,c++;do;while(j[++f]===j[++c]&&j[++f]===j[++c]&&j[++f]===j[++c]&&j[++f]===j[++c]&&j[++f]===j[++c]&&j[++f]===j[++c]&&j[++f]===j[++c]&&j[++f]===j[++c]&&f<m);if(d=ka-(m-f),f=m-ka,d>g){if(a.match_start=b,g=d,d>=h)break;n=j[f+g-1],o=j[f+g]}}while((b=l[b&k])>i&&0!==--e);return g<=a.lookahead?g:a.lookahead}function m(a){var b,c,d,e,f,g=a.w_size;do{if(e=a.window_size-a.lookahead-a.strstart,a.strstart>=g+(g-la)){E.arraySet(a.window,a.window,g,g,0),a.match_start-=g,a.strstart-=g,a.block_start-=g,c=a.hash_size,b=c;do d=a.head[--b],a.head[b]=d>=g?d-g:0;while(--c);c=g,b=c;do d=a.prev[--b],a.prev[b]=d>=g?d-g:0;while(--c);e+=g}if(0===a.strm.avail_in)break;if(c=k(a.strm,a.window,a.strstart+a.lookahead,e),a.lookahead+=c,a.lookahead+a.insert>=ja)for(f=a.strstart-a.insert,a.ins_h=a.window[f],a.ins_h=(a.ins_h<<a.hash_shift^a.window[f+1])&a.hash_mask;a.insert&&(a.ins_h=(a.ins_h<<a.hash_shift^a.window[f+ja-1])&a.hash_mask,a.prev[f&a.w_mask]=a.head[a.ins_h],a.head[a.ins_h]=f,f++,a.insert--,!(a.lookahead+a.insert<ja)););}while(a.lookahead<la&&0!==a.strm.avail_in)}function n(a,b){var c=65535;for(c>a.pending_buf_size-5&&(c=a.pending_buf_size-5);;){if(a.lookahead<=1){if(m(a),0===a.lookahead&&b===J)return ua;if(0===a.lookahead)break}a.strstart+=a.lookahead,a.lookahead=0;var d=a.block_start+c;if((0===a.strstart||a.strstart>=d)&&(a.lookahead=a.strstart-d,a.strstart=d,h(a,!1),0===a.strm.avail_out))return ua;if(a.strstart-a.block_start>=a.w_size-la&&(h(a,!1),0===a.strm.avail_out))return ua}return a.insert=0,b===M?(h(a,!0),0===a.strm.avail_out?wa:xa):a.strstart>a.block_start&&(h(a,!1),0===a.strm.avail_out)?ua:ua}function o(a,b){for(var c,d;;){if(a.lookahead<la){if(m(a),a.lookahead<la&&b===J)return ua;if(0===a.lookahead)break}if(c=0,a.lookahead>=ja&&(a.ins_h=(a.ins_h<<a.hash_shift^a.window[a.strstart+ja-1])&a.hash_mask,c=a.prev[a.strstart&a.w_mask]=a.head[a.ins_h],a.head[a.ins_h]=a.strstart),0!==c&&a.strstart-c<=a.w_size-la&&(a.match_length=l(a,c)),a.match_length>=ja)if(d=F._tr_tally(a,a.strstart-a.match_start,a.match_length-ja),a.lookahead-=a.match_length,a.match_length<=a.max_lazy_match&&a.lookahead>=ja){a.match_length--;do a.s
c=a.heap_max+1;c<V;c++)d=a.heap[c],f=i[2*i[2*d+1]+1]+1,f>o&&(f=o,p++),i[2*d+1]=f,d>j||(a.bl_count[f]++,g=0,d>=n&&(g=m[d-n]),h=i[2*d],a.opt_len+=h*(f+g),l&&(a.static_len+=h*(k[2*d+1]+g)));if(0!==p){do{for(f=o-1;0===a.bl_count[f];)f--;a.bl_count[f]--,a.bl_count[f+1]+=2,a.bl_count[o]--,p-=2}while(p>0);for(f=o;0!==f;f--)for(d=a.bl_count[f];0!==d;)e=a.heap[--c],e>j||(i[2*e+1]!==f&&(a.opt_len+=(f-i[2*e+1])*i[2*e],i[2*e+1]=f),d--)}}function n(a,b,c){var d,e,f=new Array(W+1),g=0;for(d=1;d<=W;d++)f[d]=g=g+c[d-1]<<1;for(e=0;e<=b;e++){var h=a[2*e+1];0!==h&&(a[2*e]=k(f[h]++,h))}}function o(){var a,b,c,d,f,g=new Array(W+1);for(c=0,d=0;d<Q-1;d++)for(ka[d]=c,a=0;a<1<<ba[d];a++)ja[c++]=d;for(ja[c-1]=d,f=0,d=0;d<16;d++)for(la[d]=f,a=0;a<1<<ca[d];a++)ia[f++]=d;for(f>>=7;d<T;d++)for(la[d]=f<<7,a=0;a<1<<ca[d]-7;a++)ia[256+f++]=d;for(b=0;b<=W;b++)g[b]=0;for(a=0;a<=143;)ga[2*a+1]=8,a++,g[8]++;for(;a<=255;)ga[2*a+1]=9,a++,g[9]++;for(;a<=279;)ga[2*a+1]=7,a++,g[7]++;for(;a<=287;)ga[2*a+1]=8,a++,g[8]++;for(n(ga,S+1,g),a=0;a<T;a++)ha[2*a+1]=5,ha[2*a]=k(a,5);ma=new e(ga,ba,R+1,S,W),na=new e(ha,ca,0,T,W),oa=new e(new Array(0),da,0,U,Y)}function p(a){var b;for(b=0;b<S;b++)a.dyn_ltree[2*b]=0;for(b=0;b<T;b++)a.dyn_dtree[2*b]=0;for(b=0;b<U;b++)a.bl_tree[2*b]=0;a.dyn_ltree[2*Z]=1,a.opt_len=a.static_len=0,a.last_lit=a.matches=0}function q(a){a.bi_valid>8?h(a,a.bi_buf):a.bi_valid>0&&(a.pending_buf[a.pending++]=a.bi_buf),a.bi_buf=0,a.bi_valid=0}function r(a,b,c,d){q(a),d&&(h(a,c),h(a,~c)),G.arraySet(a.pending_buf,a.window,b,c,a.pending),a.pending+=c}function s(a,b,c,d){var e=2*b,f=2*c;return a[e]<a[f]||a[e]===a[f]&&d[b]<=d[c]}function t(a,b,c){for(var d=a.heap[c],e=c<<1;e<=a.heap_len&&(e<a.heap_len&&s(b,a.heap[e+1],a.heap[e],a.depth)&&e++,!s(b,d,a.heap[e],a.depth));)a.heap[c]=a.heap[e],c=e,e<<=1;a.heap[c]=d}function u(a,b,c){var d,e,f,h,k=0;if(0!==a.last_lit)do d=a.pending_buf[a.d_buf+2*k]<<8|a.pending_buf[a.d_buf+2*k+1],e=a.pending_buf[a.l_buf+k],k++,0===d?j(a,e,b):(f=ja[e],j(a,f+R+1,b),h=ba[f],0!==h&&(e-=ka[f],i(a,e,h)),d--,f=g(d),j(a,f,c),h=ca[f],0!==h&&(d-=la[f],i(a,d,h)));while(k<a.last_lit);j(a,Z,b)}function v(a,b){var c,d,e,f=b.dyn_tree,g=b.stat_desc.static_tree,h=b.stat_desc.has_stree,i=b.stat_desc.elems,j=-1;for(a.heap_len=0,a.heap_max=V,c=0;c<i;c++)0!==f[2*c]?(a.heap[++a.heap_len]=j=c,a.depth[c]=0):f[2*c+1]=0;for(;a.heap_len<2;)e=a.heap[++a.heap_len]=j<2?++j:0,f[2*e]=1,a.depth[e]=0,a.opt_len--,h&&(a.static_len-=g[2*e+1]);for(b.max_code=j,c=a.heap_len>>1;c>=1;c--)t(a,f,c);e=i;do c=a.heap[1],a.heap[1]=a.heap[a.heap_len--],t(a,f,1),d=a.heap[1],a.heap[--a.heap_max]=c,a.heap[--a.heap_max]=d,f[2*e]=f[2*c]+f[2*d],a.depth[e]=(a.depth[c]>=a.depth[d]?a.depth[c]:a.depth[d])+1,f[2*c+1]=f[2*d+1]=e,a.heap[1]=e++,t(a,f,1);while(a.heap_len>=2);a.heap[--a.heap_max]=a.heap[1],m(a,b),n(f,j,a.bl_count)}function w(a,b,c){var d,e,f=-1,g=b[1],h=0,i=7,j=4;for(0===g&&(i=138,j=3),b[2*(c+1)+1]=65535,d=0;d<=c;d++)e=g,g=b[2*(d+1)+1],++h<i&&e===g||(h<j?a.bl_tree[2*e]+=h:0!==e?(e!==f&&a.bl_tree[2*e]++,a.bl_tree[2*$]++):h<=10?a.bl_tree[2*_]++:a.bl_tree[2*aa]++,h=0,f=e,0===g?(i=138,j=3):e===g?(i=6,j=3):(i=7,j=4))}function x(a,b,c){var d,e,f=-1,g=b[1],h=0,k=7,l=4;for(0===g&&(k=138,l=3),d=0;d<=c;d++)if(e=g,g=b[2*(d+1)+1],!(++h<k&&e===g)){if(h<l){do j(a,e,a.bl_tree);while(0!==--h)}else 0!==e?(e!==f&&(j(a,e,a.bl_tree),h--),j(a,$,a.bl_tree),i(a,h-3,2)):h<=10?(j(a,_,a.bl_tree),i(a,h-3,3)):(j(a,aa,a.bl_tree),i(a,h-11,7));h=0,f=e,0===g?(k=138,l=3):e===g?(k=6,l=3):(k=7,l=4)}}function y(a){var b;for(w(a,a.dyn_ltree,a.l_desc.max_code),w(a,a.dyn_dtree,a.d_desc.max_code),v(a,a.bl_desc),b=U-1;b>=3&&0===a.bl_tree[2*ea[b]+1];b--);return a.opt_len+=3*(b+1)+5+5+4,b}function z(a,b,c,d){var e;for(i(a,b-257,5),i(a,c-1,5),i(a,d-4,4),e=0;e<d;e++)i(a,a.bl_tree[2*ea[e]+1],3);x(a,a.dyn_ltree,b-1),x(a,a.dyn_dtree,c-1)}function A(a){var b,c=4093624447;for(b=0;b<=31;b++,c>>>=1)if(1&c&&0!==a.dyn_ltree[2*b])return I;if(0!==a.dyn_ltree[18]||0!==a.dyn_ltree[20]||0!==a.dyn_ltree[26])return J;for(b=32;b<R;b++)if(0!==a.dyn_ltree[2*b])return J;return I}function B(a){pa||(o(),pa=!0),a.l_desc=new f(a.dyn_ltree,ma),a.