From d0cd085a22ef3de6efd6af356b6809830a2a0f51 Mon Sep 17 00:00:00 2001 From: John Factotum <50942278+johnfactotum@users.noreply.github.com> Date: Wed, 19 Oct 2022 11:04:43 +0000 Subject: [PATCH] Add sample reader --- reader.html | 74 ++++++++++ reader.js | 145 ++++++++++++++++++++ vendor/fflate.min.js | 1 + vendor/zip-no-worker.min.js | 1 + view.js | 267 ++++++++++++++++++++++++++++++++++++ 5 files changed, 488 insertions(+) create mode 100644 reader.html create mode 100644 reader.js create mode 100644 vendor/fflate.min.js create mode 100644 vendor/zip-no-worker.min.js create mode 100644 view.js diff --git a/reader.html b/reader.html new file mode 100644 index 0000000..9e101f2 --- /dev/null +++ b/reader.html @@ -0,0 +1,74 @@ + + + + + + + +
Drop a file here to open it.
+ + + + diff --git a/reader.js b/reader.js new file mode 100644 index 0000000..7405c27 --- /dev/null +++ b/reader.js @@ -0,0 +1,145 @@ +/* global zip: false, fflate: false */ +import { View } from './view.js' + +const { ZipReader, BlobReader, TextWriter, BlobWriter } = zip +zip.configure({ useWebWorkers: false }) + +const isZip = async file => { + const arr = new Uint8Array(await file.slice(0, 4).arrayBuffer()) + return arr[0] === 0x50 && arr[1] === 0x4b && arr[2] === 0x03 && arr[3] === 0x04 +} + +const makeZipLoader = async file => { + const reader = new ZipReader(new BlobReader(file)) + const entries = await reader.getEntries() + const map = new Map(entries.map(entry => [entry.filename, entry])) + const load = f => (name, ...args) => + map.has(name) ? f(map.get(name), ...args) : null + const loadText = load(entry => entry.getData(new TextWriter())) + const loadBlob = load((entry, type) => entry.getData(new BlobWriter(type))) + const getSize = name => map.get(name)?.uncompressedSize ?? 0 + return { entries, loadText, loadBlob, getSize } +} + +const isCBZ = ({ name, type }) => + type === 'application/vnd.comicbook+zip' || name.endsWith('.cbz') + +const isFB2 = ({ name, type }) => + type === 'application/x-fictionbook+xml' || name.endsWith('.fb2') + +const isFBZ = ({ name, type }) => + type === 'application/x-zip-compressed-fb2' + || name.endsWith('.fb2.zip') || name.endsWith('.fbz') + +globalThis.open = async (file, emit) => { + if (!file.size) throw new Error('File not found') + let book + if (await isZip(file)) { + const loader = await makeZipLoader(file) + if (isCBZ(file)) { + const { makeComicBook } = await import('./comic-book.js') + book = makeComicBook(loader, file) + } else if (isFBZ(file)) { + const { makeFB2 } = await import('./fb2.js') + const { entries } = loader + const entry = entries.find(entry => entry.filename.endsWith('.fb2')) + const blob = await loader.loadBlob((entry ?? entries[0]).filename) + book = await makeFB2(blob) + } else { + const { EPUB } = await import('./epub.js') + book = await new EPUB(loader).init() + } + } else { + const { isMOBI, MOBI } = await import('./mobi.js') + if (await isMOBI(file)) + book = await new MOBI({ unzlib: fflate.unzlibSync }).open(file) + else if (isFB2(file)) { + const { makeFB2 } = await import('./fb2.js') + book = await makeFB2(file) + } + } + if (!book) throw new Error('File type not supported') + const view = new View(book, emit) + const element = await view.display() + document.body.append(element) + return view +} + +const getCSS = ({ spacing, justify, hyphenate }) => ` + @namespace epub "http://www.idpf.org/2007/ops"; + html { + color-scheme: light dark; + } + /* https://github.com/whatwg/html/issues/5426 */ + @media (prefers-color-scheme: dark) { + a:link { + color: lightblue; + } + } + p, li, blockquote, dd { + line-height: ${spacing}; + text-align: ${justify ? 'justify' : 'start'}; + -webkit-hyphens: ${hyphenate ? 'auto' : 'manual'}; + -webkit-hyphenate-limit-before: 3; + -webkit-hyphenate-limit-after: 2; + -webkit-hyphenate-limit-lines: 2; + hanging-punctuation: allow-end last; + widows: 2; + } + pre { + white-space: pre-wrap !important; + } + aside[epub|type~="endnote"], + aside[epub|type~="footnote"], + aside[epub|type~="note"], + aside[epub|type~="rearnote"] { + display: none; + } +` + +const $ = document.querySelector.bind(document) + +const locales = 'en' +const percentFormat = new Intl.NumberFormat(locales, { style: 'percent' }) + +const emit = obj => { + console.debug(obj) + switch (obj.type) { + case 'relocated': { + const { fraction, location, pageItem } = obj + const percent = percentFormat.format(fraction) + const loc = pageItem + ? `Page ${pageItem.label}` + : `Loc ${location.current}` + $('#progress-label').innerText = `${percent} · ${loc}` + break + } + } +} + +const dragOverHandler = e => e.preventDefault() +const dropHandler = e => { + e.preventDefault() + const file = Array.from(e.dataTransfer.items) + .find(item => item.kind === 'file')?.getAsFile() + if (file) { + document.body.removeChild($('#drop-target')) + open(file, emit) + .then(view => { + const style = { + spacing: 1.4, + justify: true, + hyphenate: true, + } + view.setAppearance({ css: getCSS(style) }) + view.renderer.next() + $('#nav-bar').style.visibility = 'visible' + $('#left-button').addEventListener('click', () => view.goLeft()) + $('#right-button').addEventListener('click', () => view.goRight()) + }) + .catch(e => emit(e)) + } +} +const dropTarget = $('#drop-target') +dropTarget.addEventListener('drop', dropHandler) +dropTarget.addEventListener('dragover', dragOverHandler) diff --git a/vendor/fflate.min.js b/vendor/fflate.min.js new file mode 100644 index 0000000..47e072c --- /dev/null +++ b/vendor/fflate.min.js @@ -0,0 +1 @@ +!function(f){typeof module!='undefined'&&typeof exports=='object'?module.exports=f():typeof define!='undefined'&&define.amd?define(f):(typeof 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j(){let e,t,n,i,r,a;function s(e,t,s,o,l,c,d,f,u,h,_){let w,p,g,b,x,y,m,k,v,R,E,D,A,F,S;R=0,x=s;do{n[e[t+R]]++,R++,x--}while(0!==x);if(n[0]==s)return d[0]=-1,f[0]=0,0;for(k=f[0],y=1;15>=y&&0===n[y];y++);for(m=y,y>k&&(k=y),x=15;0!==x&&0===n[x];x--);for(g=x,k>x&&(k=x),f[0]=k,F=1<y;y++,F<<=1)if(0>(F-=n[y]))return H;if(0>(F-=n[x]))return H;for(n[x]+=F,a[1]=y=0,R=1,A=2;0!=--x;)a[A]=y+=n[R],A++,R++;x=0,R=0;do{0!==(y=e[t+R])&&(_[a[y]++]=x),R++}while(++x=m;m++)for(w=n[m];0!=w--;){for(;m>D+k;){if(b++,D+=k,S=g-D,S=S>k?k:S,(p=1<<(y=m-D))>w+1&&(p-=w+1,A=m,S>y))for(;++yn[++A];)p-=n[A];if(S=1<1440)return H;r[b]=E=h[0],h[0]+=S,0!==b?(a[b]=x,i[0]=y,i[1]=k,y=x>>>D-k,i[2]=E-r[b-1]-y,u.set(i,3*(r[b-1]+y))):d[0]=E}for(i[1]=m-D,s>R?_[R]_[R]?0:96,i[2]=_[R++]):(i[0]=c[_[R]-o]+16+64,i[2]=l[_[R++]-o]):i[0]=192,p=1<>>D;S>y;y+=p)u.set(i,3*(E+y));for(y=1<>>=1)x^=y;for(x^=y,v=(1<o;o++)t[o]=0;for(o=0;16>o;o++)n[o]=0;for(o=0;3>o;o++)i[o]=0;r.set(n.subarray(0,15),0),a.set(n.subarray(0,16),0)}this.inflate_trees_bits=(n,i,r,a,l)=>{let c;return o(19),e[0]=0,c=s(n,0,19,19,null,null,r,i,a,e,t),c==H?l.msg="oversubscribed dynamic bit lengths tree":c!=O&&0!==i[0]||(l.msg="incomplete dynamic bit lengths tree",c=H),c},this.inflate_trees_dynamic=(n,i,r,a,l,c,d,f,u)=>{let h;return o(288),e[0]=0,h=s(r,0,n,257,Z,K,c,a,f,e,t),0!=h||0===a[0]?(h==H?u.msg="oversubscribed literal/length tree":-4!=h&&(u.msg="incomplete literal/length tree",h=H),h):(o(288),h=s(r,n,i,0,G,Y,d,l,f,e,t),0!=h||0===l[0]&&n>257?(h==H?u.msg="oversubscribed distance tree":h==O?(u.msg="incomplete distance tree",h=H):-4!=h&&(u.msg="empty distance tree with lengths",h=H),h):0)}}function X(){const e=this;let t,n,i,r,a=0,s=0,o=0,l=0,c=0,d=0,f=0,u=0,h=0,_=0;function w(e,t,n,i,r,a,s,o){let l,c,d,f,u,h,_,w,p,g,b,x,y,m,k,v;_=o.next_in_index,w=o.avail_in,u=s.bitb,h=s.bitk,p=s.write,g=ph;)w--,u|=(255&o.read_byte(_++))<>=c[v+1],h-=c[v+1],0!=(16&f)){for(f&=15,y=c[v+2]+(u&P[f]),u>>=f,h-=f;15>h;)w--,u|=(255&o.read_byte(_++))<>=c[v+1],h-=c[v+1],0!=(16&f)){for(f&=15;f>h;)w--,u|=(255&o.read_byte(_++))<>=f,h-=f,g-=y,m>p){k=p-m;do{k+=s.end}while(0>k);if(f=s.end-k,y>f){if(y-=f,p-k>0&&f>p-k)do{s.win[p++]=s.win[k++]}while(0!=--f);else s.win.set(s.win.subarray(k,k+f),p),p+=f,k+=f,f=0;k=0}}else k=p-m,p-k>0&&2>p-k?(s.win[p++]=s.win[k++],s.win[p++]=s.win[k++],y-=2):(s.win.set(s.win.subarray(k,k+2),p),p+=2,k+=2,y-=2);if(p-k>0&&y>p-k)do{s.win[p++]=s.win[k++]}while(0!=--y);else s.win.set(s.win.subarray(k,k+y),p),p+=y,k+=y,y=0;break}if(0!=(64&f))return o.msg="invalid distance code",y=o.avail_in-w,y=y>h>>3?h>>3:y,w+=y,_-=y,h-=y<<3,s.bitb=u,s.bitk=h,o.avail_in=w,o.total_in+=_-o.next_in_index,o.next_in_index=_,s.write=p,H;l+=c[v+2],l+=u&P[f],v=3*(d+l),f=c[v]}break}if(0!=(64&f))return 0!=(32&f)?(y=o.avail_in-w,y=y>h>>3?h>>3:y,w+=y,_-=y,h-=y<<3,s.bitb=u,s.bitk=h,o.avail_in=w,o.total_in+=_-o.next_in_index,o.next_in_index=_,s.write=p,1):(o.msg="invalid literal/length code",y=o.avail_in-w,y=y>h>>3?h>>3:y,w+=y,_-=y,h-=y<<3,s.bitb=u,s.bitk=h,o.avail_in=w,o.total_in+=_-o.next_in_index,o.next_in_index=_,s.write=p,H);if(l+=c[v+2],l+=u&P[f],v=3*(d+l),0===(f=c[v])){u>>=c[v+1],h-=c[v+1],s.win[p++]=c[v+2],g--;break}}else u>>=c[v+1],h-=c[v+1],s.win[p++]=c[v+2],g--}while(g>=258&&w>=10);return y=o.avail_in-w,y=y>h>>3?h>>3:y,w+=y,_-=y,h-=y<<3,s.bitb=u,s.bitk=h,o.avail_in=w,o.total_in+=_-o.next_in_index,o.next_in_index=_,s.write=p,0}e.init=(e,a,s,o,l,c)=>{t=0,f=e,u=a,i=s,h=o,r=l,_=c,n=null},e.proc=(e,p,g)=>{let b,x,y,m,k,v,R,E=0,D=0,A=0;for(A=p.next_in_index,m=p.avail_in,E=e.bitb,D=e.bitk,k=e.write,v=k=258&&m>=10&&(e.bitb=E,e.bitk=D,p.avail_in=m,p.total_in+=A-p.next_in_index,p.next_in_index=A,e.write=k,g=w(f,u,i,h,r,_,e,p),A=p.next_in_index,m=p.avail_in,E=e.bitb,D=e.bitk,k=e.write,v=kD;){if(0===m)return e.bitb=E,e.bitk=D,p.avail_in=m,p.total_in+=A-p.next_in_index,p.next_in_index=A,e.write=k,e.inflate_flush(p,g);g=0,m--,E|=(255&p.read_byte(A++))<>>=n[x+1],D-=n[x+1],y=n[x],0===y){l=n[x+2],t=6;break}if(0!=(16&y)){c=15&y,a=n[x+2],t=2;break}if(0==(64&y)){o=y,s=x/3+n[x+2];break}if(0!=(32&y)){t=7;break}return t=9,p.msg="invalid literal/length code",g=H,e.bitb=E,e.bitk=D,p.avail_in=m,p.total_in+=A-p.next_in_index,p.next_in_index=A,e.write=k,e.inflate_flush(p,g);case 2:for(b=c;b>D;){if(0===m)return e.bitb=E,e.bitk=D,p.avail_in=m,p.total_in+=A-p.next_in_index,p.next_in_index=A,e.write=k,e.inflate_flush(p,g);g=0,m--,E|=(255&p.read_byte(A++))<>=b,D-=b,o=u,n=r,s=_,t=3;case 3:for(b=o;b>D;){if(0===m)return e.bitb=E,e.bitk=D,p.avail_in=m,p.total_in+=A-p.next_in_index,p.next_in_index=A,e.write=k,e.inflate_flush(p,g);g=0,m--,E|=(255&p.read_byte(A++))<>=n[x+1],D-=n[x+1],y=n[x],0!=(16&y)){c=15&y,d=n[x+2],t=4;break}if(0==(64&y)){o=y,s=x/3+n[x+2];break}return t=9,p.msg="invalid distance code",g=H,e.bitb=E,e.bitk=D,p.avail_in=m,p.total_in+=A-p.next_in_index,p.next_in_index=A,e.write=k,e.inflate_flush(p,g);case 4:for(b=c;b>D;){if(0===m)return e.bitb=E,e.bitk=D,p.avail_in=m,p.total_in+=A-p.next_in_index,p.next_in_index=A,e.write=k,e.inflate_flush(p,g);g=0,m--,E|=(255&p.read_byte(A++))<>=b,D-=b,t=5;case 5:for(R=k-d;0>R;)R+=e.end;for(;0!==a;){if(0===v&&(k==e.end&&0!==e.read&&(k=0,v=k7&&(D-=8,m++,A--),e.write=k,g=e.inflate_flush(p,g),k=e.write,v=k{}}j.inflate_trees_fixed=(e,t,n,i)=>(e[0]=9,t[0]=5,n[0]=V,i[0]=q,0);const J=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];function Q(e,t){const n=this;let i,r=0,a=0,s=0,o=0;const l=[0],c=[0],f=new X;let u=0,h=new Int32Array(4320);const _=new 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1:k=[],v=[],R=[[]],E=[[]],j.inflate_trees_fixed(k,v,R,E),f.init(k[0],v[0],R[0],0,E[0],0),w>>>=3,p-=3,r=6;break;case 2:w>>>=3,p-=3,r=3;break;case 3:return w>>>=3,p-=3,r=9,e.msg="invalid block type",t=H,n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t)}break;case 1:for(;32>p;){if(0===b)return n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);t=0,b--,w|=(255&e.read_byte(g++))<>>16&65535)!=(65535&w))return r=9,e.msg="invalid stored block lengths",t=H,n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);a=65535&w,w=p=0,r=0!==a?2:0!==u?7:0;break;case 2:if(0===b)return n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);if(0===y&&(x==n.end&&0!==n.read&&(x=0,y=xb&&(d=b),d>y&&(d=y),n.win.set(e.read_buf(g,d),x),g+=d,b-=d,x+=d,y-=d,0!=(a-=d))break;r=0!==u?7:0;break;case 3:for(;14>p;){if(0===b)return n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);t=0,b--,w|=(255&e.read_byte(g++))<29||(d>>5&31)>29)return r=9,e.msg="too many length or distance symbols",t=H,n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);if(d=258+(31&d)+(d>>5&31),!i||i.lengthm;m++)i[m]=0;w>>>=14,p-=14,o=0,r=4;case 4:for(;4+(s>>>10)>o;){for(;3>p;){if(0===b)return n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);t=0,b--,w|=(255&e.read_byte(g++))<>>=3,p-=3}for(;19>o;)i[J[o++]]=0;if(l[0]=7,d=_.inflate_trees_bits(i,l,c,h,e),0!=d)return(t=d)==H&&(i=null,r=9),n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);o=0,r=5;case 5:for(;d=s,258+(31&d)+(d>>5&31)>o;){let a,f;for(d=l[0];d>p;){if(0===b)return n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);t=0,b--,w|=(255&e.read_byte(g++))<f)w>>>=d,p-=d,i[o++]=f;else{for(m=18==f?7:f-14,a=18==f?11:3;d+m>p;){if(0===b)return n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);t=0,b--,w|=(255&e.read_byte(g++))<>>=d,p-=d,a+=w&P[m],w>>>=m,p-=m,m=o,d=s,m+a>258+(31&d)+(d>>5&31)||16==f&&1>m)return i=null,r=9,e.msg="invalid bit length repeat",t=H,n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);f=16==f?i[m-1]:0;do{i[m++]=f}while(0!=--a);o=m}}if(c[0]=-1,D=[],A=[],F=[],S=[],D[0]=9,A[0]=6,d=s,d=_.inflate_trees_dynamic(257+(31&d),1+(d>>5&31),i,D,A,F,S,h,e),0!=d)return d==H&&(i=null,r=9),t=d,n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,n.inflate_flush(e,t);f.init(D[0],A[0],h,F[0],h,S[0]),r=6;case 6:if(n.bitb=w,n.bitk=p,e.avail_in=b,e.total_in+=g-e.next_in_index,e.next_in_index=g,n.write=x,1!=(t=f.proc(n,e,t)))return n.inflate_flush(e,t);if(t=0,f.free(e),g=e.next_in_index,b=e.avail_in,w=n.bitb,p=n.bitk,x=n.write,y=x{n.reset(e,null),n.win=null,h=null},n.set_dictionary=(e,t,i)=>{n.win.set(e.subarray(t,t+i),0),n.read=n.write=i},n.sync_point=()=>1==r?1:0}const $=13,ee=[0,0,255,255];function te(){const e=this;function t(e){return e&&e.istate?(e.total_in=e.total_out=0,e.msg=null,e.istate.mode=7,e.istate.blocks.reset(e,null),0):N}e.mode=0,e.method=0,e.was=[0],e.need=0,e.marker=0,e.wbits=0,e.inflateEnd=t=>(e.blocks&&e.blocks.free(t),e.blocks=null,0),e.inflateInit=(n,i)=>(n.msg=null,e.blocks=null,8>i||i>15?(e.inflateEnd(n),N):(e.wbits=i,n.istate.blocks=new Q(n,1<{let n,i;if(!e||!e.istate||!e.next_in)return N;const r=e.istate;for(t=4==t?O:0,n=O;;)switch(r.mode){case 0:if(0===e.avail_in)return n;if(n=t,e.avail_in--,e.total_in++,8!=(15&(r.method=e.read_byte(e.next_in_index++)))){r.mode=$,e.msg="unknown compression method",r.marker=5;break}if(8+(r.method>>4)>r.wbits){r.mode=$,e.msg="invalid win size",r.marker=5;break}r.mode=1;case 1:if(0===e.avail_in)return n;if(n=t,e.avail_in--,e.total_in++,i=255&e.read_byte(e.next_in_index++),((r.method<<8)+i)%31!=0){r.mode=$,e.msg="incorrect header check",r.marker=5;break}if(0==(32&i)){r.mode=7;break}r.mode=2;case 2:if(0===e.avail_in)return n;n=t,e.avail_in--,e.total_in++,r.need=(255&e.read_byte(e.next_in_index++))<<24&4278190080,r.mode=3;case 3:if(0===e.avail_in)return n;n=t,e.avail_in--,e.total_in++,r.need+=(255&e.read_byte(e.next_in_index++))<<16&16711680,r.mode=4;case 4:if(0===e.avail_in)return n;n=t,e.avail_in--,e.total_in++,r.need+=(255&e.read_byte(e.next_in_index++))<<8&65280,r.mode=5;case 5:return 0===e.avail_in?n:(n=t,e.avail_in--,e.total_in++,r.need+=255&e.read_byte(e.next_in_index++),r.mode=6,2);case 6:return r.mode=$,e.msg="need dictionary",r.marker=0,N;case 7:if(n=r.blocks.proc(e,n),n==H){r.mode=$,r.marker=0;break}if(0==n&&(n=t),1!=n)return n;n=t,r.blocks.reset(e,r.was),r.mode=12;case 12:return e.avail_in=0,1;case $:return H;default:return N}},e.inflateSetDictionary=(e,t,n)=>{let i=0,r=n;if(!e||!e.istate||6!=e.istate.mode)return N;const a=e.istate;return r<1<{let n,i,r,a,s;if(!e||!e.istate)return N;const o=e.istate;if(o.mode!=$&&(o.mode=$,o.marker=0),0===(n=e.avail_in))return O;for(i=e.next_in_index,r=o.marker;0!==n&&4>r;)e.read_byte(i)==ee[r]?r++:r=0!==e.read_byte(i)?0:4-r,i++,n--;return e.total_in+=i-e.next_in_index,e.next_in_index=i,e.avail_in=n,o.marker=r,4!=r?H:(a=e.total_in,s=e.total_out,t(e),e.total_in=a,e.total_out=s,o.mode=7,0)},e.inflateSyncPoint=e=>e&&e.istate&&e.istate.blocks?e.istate.blocks.sync_point():N}function ne(){}ne.prototype={inflateInit:function(e){const t=this;return t.istate=new te,e||(e=15),t.istate.inflateInit(t,e)},inflate:function(e){const t=this;return t.istate?t.istate.inflate(t,e):N},inflateEnd:function(){const e=this;if(!e.istate)return N;const t=e.istate.inflateEnd(e);return e.istate=null,t},inflateSync:function(){const e=this;return e.istate?e.istate.inflateSync(e):N},inflateSetDictionary:function(e,t){const n=this;return n.istate?n.istate.inflateSetDictionary(n,e,t):N},read_byte:function(e){return this.next_in[e]},read_buf:function(e,t){return this.next_in.subarray(e,e+t)}};const ie={chunkSize:524288,maxWorkers:"undefined"!=typeof navigator&&navigator.hardwareConcurrency||2,terminateWorkerTimeout:5e3,useWebWorkers:!0,workerScripts:void 0},re=n.assign({},ie);function ae(){return re}function se(e){if(void 0!==e.baseURL&&(re.baseURL=e.baseURL),void 0!==e.chunkSize&&(re.chunkSize=e.chunkSize),void 0!==e.maxWorkers&&(re.maxWorkers=e.maxWorkers),void 0!==e.terminateWorkerTimeout&&(re.terminateWorkerTimeout=e.terminateWorkerTimeout),void 0!==e.useWebWorkers&&(re.useWebWorkers=e.useWebWorkers),void 0!==e.Deflate&&(re.Deflate=e.Deflate),void 0!==e.Inflate&&(re.Inflate=e.Inflate),void 0!==e.workerScripts){if(e.workerScripts.deflate){if(!t.isArray(e.workerScripts.deflate))throw new c("workerScripts.deflate must be an array");re.workerScripts||(re.workerScripts={}),re.workerScripts.deflate=e.workerScripts.deflate}if(e.workerScripts.inflate){if(!t.isArray(e.workerScripts.inflate))throw new c("workerScripts.inflate must be an 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n},toBits(e){const t=[];let n,i=0;for(n=0;n9007199254740991)throw new c("Cannot hash more than 2^53 - 1 bits");const a=new u(n);let s=0;for(let e=t.blockSize+i-(t.blockSize+i&t.blockSize-1);r>=e;e+=t.blockSize)t._block(a.subarray(16*s,16*(s+1))),s+=1;return n.splice(0,16*s),t},finalize:function(){const e=this;let t=e._buffer;const n=e._h;t=de.concat(t,[de.partial(1,1)]);for(let e=t.length+2;15&e;e++)t.push(0);for(t.push(a.floor(e._length/4294967296)),t.push(0|e._length);t.length;)e._block(t.splice(0,16));return e.reset(),n},_init:[1732584193,4023233417,2562383102,271733878,3285377520],_key:[1518500249,1859775393,2400959708,3395469782],_f:(e,t,n,i)=>e>19?e>39?e>59?e>79?void 0:t^n^i:t&n|t&i|n&i:t^n^i:t&n|~t&i,_S:(e,t)=>t<>>32-e,_block:function(e){const n=this,i=n._h,r=t(80);for(let t=0;16>t;t++)r[t]=e[t];let s=i[0],o=i[1],l=i[2],c=i[3],d=i[4];for(let e=0;79>=e;e++){16>e||(r[e]=n._S(1,r[e-3]^r[e-8]^r[e-14]^r[e-16]));const 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e._hash(e._baseHash[0]),e._updated=!1}update(e){this._updated=!0,this._resultHash.update(e)}digest(){const e=this,t=e._resultHash.finalize(),n=new e._hash(e._baseHash[1]).update(t).finalize();return e.reset(),n}encrypt(e){if(this._updated)throw new c("encrypt on already updated hmac called!");return this.update(e),this.digest(e)}}},we="Invalid pasword",pe=16,ge={name:"PBKDF2"},be=n.assign({hash:{name:"HMAC"}},ge),xe=n.assign({iterations:1e3,hash:{name:"SHA-1"}},ge),ye=["deriveBits"],me=[8,12,16],ke=[16,24,32],ve=10,Re=[0,0,0,0],Ee=void 0!==y,De=Ee&&void 0!==y.subtle,Ae=fe.bytes,Fe=class{constructor(e){const t=this;t._tables=[[[],[],[],[],[]],[[],[],[],[],[]]],t._tables[0][0][0]||t._precompute();const n=t._tables[0][4],i=t._tables[1],r=e.length;let a,s,o,l=1;if(4!==r&&6!==r&&8!==r)throw new c("invalid aes key size");for(t._key=[s=e.slice(0),o=[]],a=r;4*r+28>a;a++){let e=s[a-1];(a%r==0||8===r&&a%r==4)&&(e=n[e>>>24]<<24^n[e>>16&255]<<16^n[e>>8&255]<<8^n[255&e],a%r==0&&(e=e<<8^e>>>24^l<<24,l=l<<1^283*(l>>7))),s[a]=s[a-r]^e}for(let e=0;a;e++,a--){const t=s[3&e?a:a-4];o[e]=4>=a||4>e?t:i[0][n[t>>>24]]^i[1][n[t>>16&255]]^i[2][n[t>>8&255]]^i[3][n[255&t]]}}encrypt(e){return this._crypt(e,0)}decrypt(e){return this._crypt(e,1)}_precompute(){const e=this._tables[0],t=this._tables[1],n=e[4],i=t[4],r=[],a=[];let s,o,l,c;for(let e=0;256>e;e++)a[(r[e]=e<<1^283*(e>>7))^e]=e;for(let d=s=0;!n[d];d^=o||1,s=a[s]||1){let a=s^s<<1^s<<2^s<<3^s<<4;a=a>>8^255&a^99,n[d]=a,i[a]=d,c=r[l=r[o=r[d]]];let f=16843009*c^65537*l^257*o^16843008*d,u=257*r[a]^16843008*a;for(let n=0;4>n;n++)e[n][d]=u=u<<24^u>>>8,t[n][a]=f=f<<24^f>>>8}for(let n=0;5>n;n++)e[n]=e[n].slice(0),t[n]=t[n].slice(0)}_crypt(e,t){if(4!==e.length)throw new c("invalid aes block size");const n=this._key[t],i=n.length/4-2,r=[0,0,0,0],a=this._tables[t],s=a[0],o=a[1],l=a[2],d=a[3],f=a[4];let u,h,_,w=e[0]^n[0],p=e[t?3:1]^n[1],g=e[2]^n[2],b=e[t?1:3]^n[3],x=4;for(let e=0;i>e;e++)u=s[w>>>24]^o[p>>16&255]^l[g>>8&255]^d[255&b]^n[x],h=s[p>>>24]^o[g>>16&255]^l[b>>8&255]^d[255&w]^n[x+1],_=s[g>>>24]^o[b>>16&255]^l[w>>8&255]^d[255&p]^n[x+2],b=s[b>>>24]^o[w>>16&255]^l[p>>8&255]^d[255&g]^n[x+3],x+=4,w=u,p=h,g=_;for(let e=0;4>e;e++)r[t?3&-e:e]=f[w>>>24]<<24^f[p>>16&255]<<16^f[g>>8&255]<<8^f[255&b]^n[x++],u=w,w=p,p=g,g=b,b=u;return r}},Se=class{constructor(e,t){this._prf=e,this._initIv=t,this._iv=t}reset(){this._iv=this._initIv}update(e){return this.calculate(this._prf,e,this._iv)}incWord(e){if(255==(e>>24&255)){let t=e>>16&255,n=e>>8&255,i=255&e;255===t?(t=0,255===n?(n=0,255===i?i=0:++i):++n):++t,e=0,e+=t<<16,e+=n<<8,e+=i}else e+=1<<24;return e}incCounter(e){0===(e[0]=this.incWord(e[0]))&&(e[1]=this.incWord(e[1]))}calculate(e,t,n){let i;if(!(i=t.length))return[];const r=de.bitLength(t);for(let r=0;i>r;r+=4){this.incCounter(n);const i=e.encrypt(n);t[r]^=i[0],t[r+1]^=i[1],t[r+2]^=i[2],t[r+3]^=i[3]}return de.clamp(t,r)}},ze=_e.hmacSha1;class Te{constructor(e,t,i){n.assign(this,{password:e,signed:t,strength:i-1,pendingInput:new d(0)})}async append(e){const n=this;if(n.password){const i=Be(e,0,me[n.strength]+2);await(async(e,t,n)=>{await We(e,n,Be(t,0,me[e.strength]));const i=Be(t,me[e.strength]),r=e.keys.passwordVerification;if(r[0]!=i[0]||r[1]!=i[1])throw new c(we)})(n,i,n.password),n.password=null,n.aesCtrGladman=new Se(new Fe(n.keys.key),t.from(Re)),n.hmac=new ze(n.keys.authentication),e=Be(e,me[n.strength]+2)}return Ce(n,e,new d(e.length-ve-(e.length-ve)%pe),0,ve,!0)}flush(){const e=this,t=e.pendingInput,n=Be(t,0,t.length-ve),i=Be(t,t.length-ve);let r=new d(0);if(n.length){const t=Ae.toBits(n);e.hmac.update(t);const i=e.aesCtrGladman.update(t);r=Ae.fromBits(i)}let a=!0;if(e.signed){const t=Be(Ae.fromBits(e.hmac.digest()),0,ve);for(let e=0;ve>e;e++)t[e]!=i[e]&&(a=!1)}return{valid:a,data:r}}}class Ue{constructor(e,t){n.assign(this,{password:e,strength:t-1,pendingInput:new d(0)})}async append(e){const n=this;let i=new d(0);n.password&&(i=await(async(e,t)=>{const n=(i=new d(me[e.strength]),Ee&&"function"==typeof y.getRandomValues?y.getRandomValues(i):he.getRandomValues(i));var i;return await We(e,t,n),Ie(n,e.keys.passwordVerification)})(n,n.password),n.password=null,n.aesCtrGladman=new Se(new Fe(n.keys.key),t.from(Re)),n.hmac=new ze(n.keys.authentication));const r=new d(i.length+e.length-e.length%pe);return r.set(i,0),Ce(n,e,r,i.length,0)}flush(){const e=this;let t=new d(0);if(e.pendingInput.length){const n=e.aesCtrGladman.update(Ae.toBits(e.pendingInput));e.hmac.update(n),t=Ae.fromBits(n)}const n=Be(Ae.fromBits(e.hmac.digest()),0,ve);return{data:Ie(t,n),signature:n}}}function Ce(e,t,n,i,r,a){const s=t.length-r;let o;for(e.pendingInput.length&&(t=Ie(e.pendingInput,t),n=((e,t)=>{if(t&&t>e.length){const n=e;(e=new d(t)).set(n,0)}return e})(n,s-s%pe)),o=0;s-pe>=o;o+=pe){const r=Ae.toBits(Be(t,o,o+pe));a&&e.hmac.update(r);const s=e.aesCtrGladman.update(r);a||e.hmac.update(s),n.set(Ae.fromBits(s),o+i)}return e.pendingInput=Be(t,o),n}async function We(e,t,i){const r=ce(t),a=await(async(e,t,n,i,r)=>Ee&&De&&"function"==typeof y.subtle.importKey?y.subtle.importKey("raw",t,n,!1,r):_e.importKey(t))(0,r,be,0,ye),s=await(async(e,t,n)=>Ee&&De&&"function"==typeof y.subtle.deriveBits?await y.subtle.deriveBits(e,t,n):_e.pbkdf2(t,e.salt,xe.iterations,n))(n.assign({salt:i},xe),a,8*(2*ke[e.strength]+2)),o=new d(s);e.keys={key:Ae.toBits(Be(o,0,ke[e.strength])),authentication:Ae.toBits(Be(o,ke[e.strength],2*ke[e.strength])),passwordVerification:Be(o,2*ke[e.strength])}}function Ie(e,t){let n=e;return e.length+t.length&&(n=new d(e.length+t.length),n.set(e,0),n.set(t,e.length)),n}function Be(e,t,n){return e.subarray(t,n)}class Le{constructor(e,t){n.assign(this,{password:e,passwordVerification:t}),Oe(this,e)}append(e){const t=this;if(t.password){const n=Ne(t,e.subarray(0,12));if(t.password=null,n[11]!=t.passwordVerification)throw new c(we);e=e.subarray(12)}return Ne(t,e)}flush(){return{valid:!0,data:new d(0)}}}class Me{constructor(e,t){n.assign(this,{password:e,passwordVerification:t}),Oe(this,e)}append(e){const t=this;let n,i;if(t.password){t.password=null;const r=y.getRandomValues(new d(12));r[11]=t.passwordVerification,n=new d(e.length+r.length),n.set(He(t,r),0),i=12}else n=new d(e.length),i=0;return n.set(He(t,e),i),n}flush(){return{data:new d(0)}}}function Ne(e,t){const n=new d(t.length);for(let i=0;i>>24]),e.keys[2]=~e.crcKey2.get()}function Ve(e){const t=2|e.keys[2];return qe(a.imul(t,1^t)>>>8)}function qe(e){return 255&e}function Ze(e){return 4294967295&e}const Ke="deflate",Ge="inflate",Ye="Invalid signature";class je{constructor(e,{signature:t,password:i,signed:r,compressed:a,zipCrypto:s,passwordVerification:o,encryptionStrength:l},{chunkSize:c}){const d=!!i;n.assign(this,{signature:t,encrypted:d,signed:r,compressed:a,inflate:a&&new e({chunkSize:c}),crc32:r&&new le,zipCrypto:s,decrypt:d&&s?new Le(i,o):new Te(i,r,l)})}async append(e){const t=this;return t.encrypted&&e.length&&(e=await t.decrypt.append(e)),t.compressed&&e.length&&(e=await t.inflate.append(e)),(!t.encrypted||t.zipCrypto)&&t.signed&&e.length&&t.crc32.append(e),e}async flush(){const e=this;let t,n=new d(0);if(e.encrypted){const t=e.decrypt.flush();if(!t.valid)throw new c(Ye);n=t.data}if((!e.encrypted||e.zipCrypto)&&e.signed){const n=new h(new d(4).buffer);if(t=e.crc32.get(),n.setUint32(0,t),e.signature!=n.getUint32(0,!1))throw new c(Ye)}return e.compressed&&(n=await e.inflate.append(n)||new d(0),await e.inflate.flush()),{data:n,signature:t}}}class Xe{constructor(e,{encrypted:t,signed:i,compressed:r,level:a,zipCrypto:s,password:o,passwordVerification:l,encryptionStrength:c},{chunkSize:d}){n.assign(this,{encrypted:t,signed:i,compressed:r,deflate:r&&new e({level:a||5,chunkSize:d}),crc32:i&&new le,zipCrypto:s,encrypt:t&&s?new Me(o,l):new Ue(o,c)})}async append(e){const t=this;let n=e;return t.compressed&&e.length&&(n=await t.deflate.append(e)),t.encrypted&&n.length&&(n=await t.encrypt.append(n)),(!t.encrypted||t.zipCrypto)&&t.signed&&e.length&&t.crc32.append(e),n}async flush(){const e=this;let t,n=new d(0);if(e.compressed&&(n=await e.deflate.flush()||new d(0)),e.encrypted){n=await e.encrypt.append(n);const i=e.encrypt.flush();t=i.signature;const r=new d(n.length+i.data.length);r.set(n,0),r.set(i.data,n.length),n=r}return e.encrypted&&!e.zipCrypto||!e.signed||(t=e.crc32.get()),{data:n,signature:t}}}const Je="init",Qe="append",$e="flush";let et=!0;var tt=(e,t,i,r,a,s,o)=>(n.assign(e,{busy:!0,codecConstructor:t,options:n.assign({},i),scripts:o,terminate(){e.worker&&!e.busy&&(e.worker.terminate(),e.interface=null)},onTaskFinished(){e.busy=!1,a(e)}}),s?((e,t)=>{let n;const i={type:"module"};if(!e.interface){if(et)try{e.worker=r({},t.baseURL)}catch(n){et=!1,e.worker=r(i,t.baseURL)}else e.worker=r(i,t.baseURL);e.worker.addEventListener("message",(t=>{const i=t.data;if(n){const t=i.error,r=i.type;if(t){const i=new c(t.message);i.stack=t.stack,n.reject(i),n=null,e.onTaskFinished()}else if(r==Je||r==$e||r==Qe){const t=i.data;r==$e?(n.resolve({data:new d(t),signature:i.signature}),n=null,e.onTaskFinished()):n.resolve(t&&new d(t))}}}),!1),e.interface={append:e=>a({type:Qe,data:e}),flush:()=>a({type:$e}),abort(){e.onTaskFinished()}}}return e.interface;function r(t,n){let i,r;i=e.scripts[0],"function"==typeof i&&(i=i());try{r=new l(i,n)}catch(e){r=i}return new Worker(r,t)}async function a(i){if(!n){const n=e.options,i=e.scripts.slice(1);await s({scripts:i,type:Je,options:n,config:{chunkSize:t.chunkSize}})}return s(i)}function s(t){const i=e.worker,r=new w(((e,t)=>n={resolve:e,reject:t}));try{if(t.data)try{t.data=t.data.buffer,i.postMessage(t,[t.data])}catch(e){i.postMessage(t)}else i.postMessage(t)}catch(t){n.reject(t),n=null,e.onTaskFinished()}return r}})(e,r):((e,t)=>{const n=((e,t,n)=>t.codecType.startsWith(Ke)?new Xe(e,t,n):t.codecType.startsWith(Ge)?new je(e,t,n):void 0)(e.codecConstructor,e.options,t);return{async append(t){try{return await n.append(t)}catch(t){throw e.onTaskFinished(),t}},async flush(){try{return await n.flush()}finally{e.onTaskFinished()}},abort(){e.onTaskFinished()}}})(e,r));let nt=[],it=[];function rt(e,t,n){const i=!(!t.compressed&&!t.signed&&!t.encrypted)&&(t.useWebWorkers||void 0===t.useWebWorkers&&n.useWebWorkers),r=i&&n.workerScripts?n.workerScripts[t.codecType]:[];if(nt.length!e.busy));return s?(at(s),tt(s,e,t,n,a,i,r)):new w((n=>it.push({resolve:n,codecConstructor:e,options:t,webWorker:i,scripts:r})))}function a(e){if(it.length){const[{resolve:t,codecConstructor:i,options:r,webWorker:s,scripts:o}]=it.splice(0,1);t(tt(e,i,r,n,a,s,o))}else e.worker?(at(e),Number.isFinite(n.terminateWorkerTimeout)&&n.terminateWorkerTimeout>=0&&(e.terminateTimeout=setTimeout((()=>{nt=nt.filter((t=>t!=e)),e.terminate()}),n.terminateWorkerTimeout))):nt=nt.filter((t=>t!=e))}}function at(e){e.terminateTimeout&&(clearTimeout(e.terminateTimeout),e.terminateTimeout=null)}const st="Abort error";async function ot(e,t,n,i,r,s,o){const l=a.max(s.chunkSize,64);return async function s(c=0,d=0){const f=o.signal;if(r>c){lt(f,e);const u=await t.readUint8Array(c+i,a.min(l,r-c)),h=u.length;lt(f,e);const _=await e.append(u);if(lt(f,e),d+=await ct(n,_),o.onprogress)try{o.onprogress(c+h,r)}catch(e){}return s(c+l,d)}{const t=await e.flush();return d+=await ct(n,t.data),{signature:t.signature,length:d}}}()}function lt(e,t){if(e&&e.aborted)throw t.abort(),new c(st)}async function ct(e,t){return t.length&&await e.writeUint8Array(t),t.length}const dt="HTTP error ",ft="HTTP Range not supported",ut="text/plain",ht="GET";class _t{constructor(){this.size=0}init(){this.initialized=!0}}class wt extends _t{}class pt extends _t{writeUint8Array(e){this.size+=e.length}}class gt extends wt{constructor(e){super(),this.blob=e,this.size=e.size}async readUint8Array(e,t){if(this.blob.arrayBuffer)return new d(await this.blob.slice(e,e+t).arrayBuffer());{const n=new b;return new w(((i,r)=>{n.onload=e=>i(new d(e.target.result)),n.onerror=()=>r(n.error),n.readAsArrayBuffer(this.blob.slice(e,e+t))}))}}}class bt extends pt{constructor(e){super(),this.contentType=e,this.arrayBuffers=[]}async writeUint8Array(e){super.writeUint8Array(e),this.arrayBuffers.push(e.buffer)}getData(){return this.blob||(this.blob=new _(this.arrayBuffers,{type:this.contentType})),this.blob}}class xt extends wt{constructor(e,t){super(),this.url=e,this.preventHeadRequest=t.preventHeadRequest,this.useRangeHeader=t.useRangeHeader,this.forceRangeRequests=t.forceRangeRequests,this.options=n.assign({},t),delete this.options.preventHeadRequest,delete this.options.useRangeHeader,delete this.options.forceRangeRequests,delete this.options.useXHR}async init(){super.init(),await mt(this,St,Et)}async readUint8Array(e,t){return kt(this,e,t,St,Et)}}class yt extends wt{constructor(e,t){super(),this.url=e,this.preventHeadRequest=t.preventHeadRequest,this.useRangeHeader=t.useRangeHeader,this.forceRangeRequests=t.forceRangeRequests,this.options=t}async init(){super.init(),await mt(this,zt,Dt)}async readUint8Array(e,t){return kt(this,e,t,zt,Dt)}}async function mt(e,t,n){if((e=>{if(void 0!==x){const t=x.createElement("a");return t.href=e,"http:"==t.protocol||"https:"==t.protocol}return/^https?:\/\//i.test(e)})(e.url)&&(e.useRangeHeader||e.forceRangeRequests)){const i=await 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Zt=["filename","rawFilename","directory","encrypted","compressedSize","uncompressedSize","lastModDate","rawLastModDate","comment","rawComment","signature","extraField","rawExtraField","bitFlag","extraFieldZip64","extraFieldUnicodePath","extraFieldUnicodeComment","extraFieldAES","filenameUTF8","commentUTF8","offset","zip64","compressionMethod","extraFieldNTFS","lastAccessDate","creationDate","extraFieldExtendedTimestamp","version","versionMadeBy","msDosCompatible","internalFileAttribute","externalFileAttribute"];class Kt{constructor(e){Zt.forEach((t=>this[t]=e[t]))}}const Gt="File format is not recognized",Yt="End of central directory not found",jt="End of Zip64 central directory not found",Xt="End of Zip64 central directory locator not found",Jt="Central directory header not found",Qt="Local file header not found",$t="Zip64 extra field not found",en="File contains encrypted entry",tn="Encryption method not supported",nn="Compression method not 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rt(l.Inflate,{codecType:Ge,password:g,zipCrypto:x,encryptionStrength:s&&s.strength,signed:fn(i,n,"checkSignature"),passwordVerification:x&&(d.dataDescriptor?u>>>8&255:f>>>24&255),signature:f,compressed:0!=o,encrypted:b,useWebWorkers:fn(i,n,"useWebWorkers")},l);e.initialized||await e.init();const m=fn(i,n,"signal"),k=a+30+_.filenameLength+_.extraFieldLength;return await ot(y,r,e,k,h,l,{onprogress:n.onprogress,signal:m}),e.getData()}}function ln(e,t,i){const r=e.rawBitFlag=wn(t,i+2),a=1==(1&r),s=pn(t,i+6);n.assign(e,{encrypted:a,version:wn(t,i),bitFlag:{level:(6&r)>>1,dataDescriptor:8==(8&r),languageEncodingFlag:(r&Nt)==Nt},rawLastModDate:s,lastModDate:un(s),filenameLength:wn(t,i+22),extraFieldLength:wn(t,i+24)})}async function cn(e,t,i,r){const l=t.rawExtraField,f=t.extraField=new o,u=bn(new d(l));let h=0;try{for(;h{t.zip64=!0;const n=bn(e.data);e.values=[];for(let t=0;tt[e]==Ut));for(let t=0;t{if(t[n]==Ut){if(void 0===e[n])throw new c($t);t[n]=e[n]}}))})(w,t),t.extraFieldZip64=w);const p=f.get(28789);p&&(await dn(p,"filename","rawFilename",t,e),t.extraFieldUnicodePath=p);const g=f.get(25461);g&&(await dn(g,"comment","rawComment",t,e),t.extraFieldUnicodeComment=g);const b=f.get(39169);b?(((e,t,n)=>{const i=bn(e.data);e.vendorVersion=_n(i,0),e.vendorId=_n(i,2);const r=_n(i,4);e.strength=r,e.originalCompressionMethod=n,t.compressionMethod=e.compressionMethod=wn(i,5)})(b,t,_),t.extraFieldAES=b):t.compressionMethod=_;const x=f.get(10);x&&(((e,t)=>{const i=bn(e.data);let r,a=4;try{for(;a{const n=bn(e.data),i=_n(n,0),r=[],a=[];1==(1&i)&&(r.push("lastModDate"),a.push("rawLastModDate")),2==(2&i)&&(r.push("lastAccessDate"),a.push("rawLastAccessDate")),4==(4&i)&&(r.push("creationDate"),a.push("rawCreationDate"));let o=1;r.forEach(((i,r)=>{if(e.data.length>=o+4){const l=pn(n,o);t[i]=e[i]=new s(1e3*l);const c=a[r];e[c]=l}o+=4}))})(y,t),t.extraFieldExtendedTimestamp=y)}async function dn(e,t,n,i,r){const a=bn(e.data);e.version=_n(a,0),e.signature=pn(a,1);const s=new le;s.append(r[n]);const o=bn(new d(4));o.setUint32(0,s.get(),!0),e[t]=await qt(e.data.subarray(5)),e.valid=!r.bitFlag.languageEncodingFlag&&e.signature==pn(o,0),e.valid&&(i[t]=e[t],i[t+"UTF8"]=!0)}function fn(e,t,n){return void 0===t[n]?e.options[n]:t[n]}function un(e){const t=(4294901760&e)>>16,n=65535&e;try{return new s(1980+((65024&t)>>9),((480&t)>>5)-1,31&t,(63488&n)>>11,(2016&n)>>5,2*(31&n),0)}catch(e){}}function hn(e){return new s(Number(e/r(1e4)-r(116444736e5)))}function _n(e,t){return e.getUint8(t)}function wn(e,t){return e.getUint16(t,!0)}function pn(e,t){return e.getUint32(t,!0)}function gn(e,t){return Number(e.getBigUint64(t,!0))}function bn(e){return new h(e.buffer)}function xn(e,t,n){return e.readUint8Array(t,n)}const yn="File already exists",mn="Zip file comment exceeds 64KB",kn="File entry comment exceeds 64KB",vn="File entry name exceeds 64KB",Rn="Version exceeds 65535",En="The strength must equal 1, 2, or 3",Dn="Extra field type exceeds 65535",An="Extra field data 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u=[];if(e.length){t.next_in_index=0,t.next_in=e,t.avail_in=e.length;do{if(t.next_out_index=0,t.avail_out=n,a=t.deflate(0),0!=a)throw new c("deflating: "+t.msg);t.next_out_index&&(t.next_out_index==n?u.push(new d(r)):u.push(r.slice(0,t.next_out_index))),f+=t.next_out_index,i&&t.next_in_index>0&&t.next_in_index!=o&&(i(t.next_in_index),o=t.next_in_index)}while(t.avail_in>0||0===t.avail_out);return u.length>1?(s=new d(f),u.forEach((e=>{s.set(e,l),l+=e.length}))):s=u[0]||new d(0),s}},this.flush=()=>{let e,i,a=0,s=0;const o=[];do{if(t.next_out_index=0,t.avail_out=n,e=t.deflate(4),1!=e&&0!=e)throw new c("deflating: "+t.msg);n-t.avail_out>0&&o.push(r.slice(0,t.next_out_index)),s+=t.next_out_index}while(t.avail_in>0||0===t.avail_out);return t.deflateEnd(),i=new d(s),o.forEach((e=>{i.set(e,a),a+=e.length})),i}},Inflate:function(e){const t=new ne,n=e&&e.chunkSize?a.floor(2*e.chunkSize):131072,i=new d(n);let r=!1;t.inflateInit(),t.next_out=i,this.append=(e,a)=>{const s=[];let 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writeUint8Array(e){return await this.writer.ready,this.writer.write(e)}async getData(){return await this.writer.ready,await this.writer.close(),this.writableStream}},e.Writer=pt,e.ZipReader=class{constructor(e,t={}){n.assign(this,{reader:e,options:t,config:ae()})}async getEntries(e={}){const t=this,i=t.reader;if(i.initialized||await i.init(),22>i.size)throw new c(Gt);const r=await(async(e,t,n)=>{const i=new d(4);return bn(i).setUint32(0,101010256,!0),await r(22)||await r(a.min(1048582,n));async function r(t){const r=n-t,a=await xn(e,r,t);for(let e=a.length-22;e>=0;e--)if(a[e]==i[0]&&a[e+1]==i[1]&&a[e+2]==i[2]&&a[e+3]==i[3])return{offset:r+e,buffer:a.slice(e,e+22).buffer}}})(i,0,i.size);if(!r)throw new c(Yt);const s=bn(r);let o=pn(s,12),l=pn(s,16),f=wn(s,8),u=0;if(l==Ut||o==Ut||f==Ct){const e=bn(await xn(i,r.offset-20,20));if(pn(e,0)!=Lt)throw new c(jt);l=gn(e,8);let t=await xn(i,l,56),n=bn(t);const a=r.offset-20-56;if(pn(n,0)!=Bt&&l!=a){const e=l;l=a,u=l-e,t=await 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s.writeUint8Array(n)})(this,e,n),this.writer.getData()}},e.configure=se,e.getMimeType=()=>"application/octet-stream",e.terminateWorkers=()=>{nt.forEach((e=>{at(e),e.terminate()}))},n.defineProperty(e,"__esModule",{value:!0})})); diff --git a/view.js b/view.js new file mode 100644 index 0000000..b6e6fdd --- /dev/null +++ b/view.js @@ -0,0 +1,267 @@ +import * as CFI from './epubcfi.js' +import { TOCProgress, SectionProgress } from './progress.js' + +const textWalker = function* (doc, func) { + const filter = NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_TEXT + | NodeFilter.SHOW_CDATA_SECTION + const { FILTER_ACCEPT, FILTER_REJECT, FILTER_SKIP } = NodeFilter + const acceptNode = node => { + const name = node.localName?.toLowerCase() + if (name === 'script' || name === 'style') return FILTER_REJECT + if (node.nodeType === 1) return FILTER_SKIP + return FILTER_ACCEPT + } + const walker = doc.createTreeWalker(doc.body, filter, { acceptNode }) + const nodes = [] + for (let node = walker.nextNode(); node; node = walker.nextNode()) + nodes.push(node) + const strs = nodes.map(node => node.nodeValue) + const makeRange = (startIndex, startOffset, endIndex, endOffset) => { + const range = doc.createRange() + range.setStart(nodes[startIndex], startOffset) + range.setEnd(nodes[endIndex], endOffset) + return range + } + for (const match of func(strs, makeRange)) yield match +} + +const frameRect = (frame, rect) => { + const left = rect.left + frame.left + const right = rect.right + frame.left + const top = rect.top + frame.top + const bottom = rect.bottom + frame.top + return { left, right, top, bottom } +} + +const pointIsInView = ({ x, y }) => + x > 0 && y > 0 && x < window.innerWidth && y < window.innerHeight + +export const getPosition = target => { + // TODO: vertical text + const frameElement = (target.getRootNode?.() ?? target?.endContainer?.getRootNode?.()) + ?.defaultView?.frameElement + const frame = frameElement?.getBoundingClientRect() ?? { top: 0, left: 0 } + const rects = Array.from(target.getClientRects()) + const first = frameRect(frame, rects[0]) + const last = frameRect(frame, rects.at(-1)) + const start = { + point: { x: (first.left + first.right) / 2, y: first.top }, + dir: 'up', + } + const end = { + point: { x: (last.left + last.right) / 2, y: last.bottom }, + dir: 'down', + } + const startInView = pointIsInView(start.point) + const endInView = pointIsInView(end.point) + if (!startInView && !endInView) return { point: { x: 0, y: 0 } } + if (!startInView) return end + if (!endInView) return start + return start.point.y > window.innerHeight - end.point.y ? start : end +} + +// https://www.w3.org/TR/epub-ssv-11/ +const SSV = Object.fromEntries(Array.from(Object.entries({ + isRef: ['annoref', 'biblioref', 'glossref', 'noteref'], + isLink: ['backlink'], + isNote: ['annotation', 'note', 'footnote', 'endnote', 'rearnote'], +}), ([k, v]) => [k, el => + el.getAttributeNS('http://www.idpf.org/2007/ops', 'type') + ?.split(/s/)?.some(t => v.includes(t))])) + +export class View { + #sectionProgress + #tocProgress + #pageProgress + language = 'en' + textDirection = '' + isCJK = false + isFixedLayout = false + #css + constructor(book, emit) { + this.book = book + this.emit = emit + + if (book.metadata?.language) try { + const language = book.metadata.language + book.metadata.language = Intl.getCanonicalLocales(language)[0] + const tag = typeof language === 'string' ? language : language[0] + const locale = new Intl.Locale(tag) + this.isCJK = ['zh', 'ja', 'kr'].includes(locale.language) + this.textDirection = locale.textInfo.direction + } catch(e) { + console.warn(e) + } + + if (book.splitTOCHref && book.getTOCFragment) { + const ids = book.sections.map(s => s.id) + this.#sectionProgress = new SectionProgress(book.sections, 150, 1600) + const splitHref = book.splitTOCHref.bind(book) + const getFragment = book.getTOCFragment.bind(book) + this.#tocProgress = new TOCProgress({ + toc: book.toc ?? [], ids, splitHref, getFragment }) + this.#pageProgress = new TOCProgress({ + toc: book.pageList ?? [], ids, splitHref, getFragment }) + } + } + async display() { + const opts = { + book: this.book, + onLoad: this.#onLoad.bind(this), + onRelocated: this.#onRelocated.bind(this), + } + this.isFixedLayout = this.book.rendition?.layout === 'pre-paginated' + if (this.isFixedLayout) { + const { FixedLayout } = await import('./fixed-layout.js') + this.renderer = new FixedLayout(opts) + } else { + const { Paginator } = await import('./paginator.js') + this.renderer = new Paginator(opts) + } + return this.renderer.element + } + #onRelocated(range, index, fraction) { + if (!this.#sectionProgress) return + const progress = this.#sectionProgress.getProgress(index, fraction) + const tocItem = this.#tocProgress.getProgress(index, range) + const pageItem = this.#pageProgress.getProgress(index, range) + const cfi = this.getCFI(index, range) + this.emit?.({ type: 'relocated', ...progress, tocItem, pageItem, cfi }) + } + #onLoad(doc, index) { + const { book } = this + + // set language and dir if not already set + doc.documentElement.lang ||= this.language + doc.documentElement.dir ||= this.isCJK ? '' : this.textDirection + + this.renderer.setStyle(this.#css) + + // set `document` background to `doc` background + // this is needed cause the iframe does not fill the whole viewport + const bodyStyle = doc.defaultView.getComputedStyle(doc.body) + document.body.style.background = + bodyStyle.backgroundColor === 'rgba(0, 0, 0, 0)' + && bodyStyle.backgroundImage === 'none' + ? doc.defaultView.getComputedStyle(doc.documentElement).background + : bodyStyle.background + + // set handlers for links + const section = book.sections[index] + for (const a of doc.querySelectorAll('a[href]')) + a.addEventListener('click', e => { + e.preventDefault() + const href = a.getAttribute('href') + const uri = section?.resolveHref?.(href) ?? href + if (book?.isExternal?.(uri)) + this.emit?.({ type: 'external-link', uri }) + else if (SSV.isRef(a)) { + const { index, anchor } = book.resolveHref(uri) + const pos = getPosition(a) + Promise.resolve(book.sections[index].createDocument()) + .then(doc => [anchor(doc), doc.contentType]) + .then(([el, type]) => + [el?.innerHTML, type, SSV.isNote(el)]) + .then(([content, contentType, isNote]) => content + ? this.emit?.({ + type: 'reference', + href: isNote ? null : uri, + content, contentType, pos, + }) : null) + .catch(e => console.error(e)) + return + } else this.goTo(uri) + }) + } + getCFI(index, range) { + if (!range) return '' + const baseCFI = this.book.sections[index].cfi ?? CFI.fake.fromIndex(index) + return CFI.joinIndir(baseCFI, CFI.fromRange(range)) + } + resolveCFI(cfi) { + if (this.book.resolveCFI) + return this.book.resolveCFI(cfi) + else { + const parts = CFI.parse(cfi) + const index = CFI.fake.toIndex((parts.parent ?? parts).shift()) + const anchor = doc => CFI.toRange(doc, parts) + return { index, anchor } + } + } + resolveNavigation(target) { + try { + if (typeof target === 'number') return { index: target } + if (CFI.isCFI.test(target)) return this.resolveCFI(target) + return this.book.resolveHref(target) + } catch (e) { + console.error(e) + console.error(`Could not resolve target ${target}`) + } + } + async goTo(target) { + const resolved = this.resolveNavigation(target) + try { + await this.renderer.goTo(resolved) + return resolved + } catch(e) { + console.error(e) + console.error(`Could not go to ${target}`) + } + } + async goToFraction(frac) { + const [index, anchor] = this.#sectionProgress.getSection(frac) + return this.renderer.goTo({ index, anchor }) + } + async select(target) { + try { + const obj = await this.resolveNavigation(target) + await this.renderer.goTo({ ...obj, select: true }) + } catch(e) { + console.error(e) + console.error(`Could not go to ${target}`) + } + } + goLeft() { + return this.book.dir === 'rtl' ? this.renderer.next() : this.renderer.prev() + } + goRight() { + return this.book.dir === 'rtl' ? this.renderer.prev() : this.renderer.next() + } + setAppearance({ layout, css }) { + if (this.isFixedLayout) return + Object.assign(this.renderer.layout, layout) + this.#css = css + this.renderer.setStyle(css) + this.renderer.render() + } + async * #searchSection(matcher, query, index) { + const doc = await this.book.sections[index].createDocument() + for (const { range, excerpt } of matcher(doc, query)) + yield { cfi: this.getCFI(index, range), excerpt } + } + async * #searchBook(matcher, query) { + const { sections } = this.book + for (const [index, { createDocument }] of sections.entries()) { + if (!createDocument) continue + const doc = await createDocument() + const subitems = Array.from(matcher(doc, query), ({ range, excerpt }) => + ({ cfi: this.getCFI(index, range), excerpt })) + const progress = (index + 1) / sections.length + yield { progress } + if (subitems.length) yield { index, subitems } + } + } + async * search(opts) { + const { searchMatcher } = await import('./search.js') + const { query, index } = opts + const matcher = searchMatcher(textWalker, + { defaultLocale: this.language, ...opts }) + const iter = index != null + ? this.#searchSection(matcher, query, index) + : this.#searchBook(matcher, query) + for await (const result of iter) yield 'subitems' in result ? { + label: this.#tocProgress.getProgress(result.index)?.label ?? '', + subitems: result.subitems, + } : result + } +}