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SingleFile
spegling av https://github.com/gildas-lormeau/SingleFile
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SingleFile
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lib
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single-file-zip.min.js

single-file-zip.min.js 42 KB
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this._crypt(e,0)}decrypt(e){return this._crypt(e,1)}_precompute(){const e=this._tables[0],t=this._tables[1],n=e[4],r=t[4],s=[],a=[];let i,o,c,l;for(let e=0;256>e;e++)a[(s[e]=e<<1^283*(e>>7))^e]=e;for(let u=i=0;!n[u];u^=o||1,i=a[i]||1){let a=i^i<<1^i<<2^i<<3^i<<4;a=a>>8^255&a^99,n[u]=a,r[a]=u,l=s[c=s[o=s[u]]];let h=16843009*l^65537*c^257*o^16843008*u,f=257*s[a]^16843008*a;for(let n=0;4>n;n++)e[n][u]=f=f<<24^f>>>8,t[n][a]=h=h<<24^h>>>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 f("invalid aes block size");const n=this._key[t],r=n.length/4-2,s=[0,0,0,0],a=this._tables[t],i=a[0],o=a[1],c=a[2],l=a[3],u=a[4];let h,d,p,w=e[0]^n[0],g=e[t?3:1]^n[1],m=e[2]^n[2],y=e[t?1:3]^n[3],b=4;for(let e=0;r>e;e++)h=i[w>>>24]^o[g>>16&255]^c[m>>8&255]^l[255&y]^n[b],d=i[g>>>24]^o[m>>16&255]^c[y>>8&255]^l[255&w]^n[b+1],p=i[m>>>24]^o[y>>16&255]^c[w>>8&255]^l[255&g]^n[b+2],y=i[y>>>24]^o[w>>16&255]^c[g>>8&255]^l[255&m]^n[b+3],b+=4,w=h,g=d,m=p;for(let e=0;4>e;e++)s[t?3&-e:e]=u[w>>>24]<<24^u[g>>16&255]<<16^u[m>>8&255]<<8^u[255&y]^n[b++],h=w,w=g,g=m,m=y,y=h;return s}},kt=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))e+=1<<24;else{let t=e>>16&255,n=e>>8&255,r=255&e;255===t?(t=0,255===n?(n=0,255===r?r=0:++r):++n):++t,e=0,e+=t<<16,e+=n<<8,e+=r}return e}incCounter(e){0===(e[0]=this.incWord(e[0]))&&(e[1]=this.incWord(e[1]))}calculate(e,t,n){let r;if(!(r=t.length))return[];const s=Xe.bitLength(t);for(let s=0;r>s;s+=4){this.incCounter(n);const r=e.encrypt(n);t[s]^=r[0],t[s+1]^=r[1],t[s+2]^=r[2],t[s+3]^=r[3]}return Xe.clamp(t,s)}},St=tt.hmacSha1;let zt=gt&&yt&&typeof mt.importKey==De,xt=gt&&yt&&typeof mt.deriveBits==De;class _t extends x{constructor({password:e,rawPassword:t,signed:r,encryptionStrength:s,checkPasswordOnly:a}){super({start(){n.assign(this,{ready:new y((e=>this.resolveReady=e)),password:Tt(e,t),signed:r,strength:s-1,pending:new d})},async transform(e,t){const n=this,{password:r,strength:s,resolveReady:i,ready:o}=n;r?(await(async(e,t,n,r)=>{const s=await Ct(e,t,n,Ut(r,0,ft[t])),a=Ut(r,ft[t]);if(s[0]!=a[0]||s[1]!=a[1])throw new f(rt)})(n,s,r,Ut(e,0,ft[s]+2)),e=Ut(e,ft[s]+2),a?t.error(new f(at)):i()):await o;const c=new d(e.length-pt-(e.length-pt)%ot);t.enqueue(Ft(n,e,c,0,pt,!0))},async flush(e){const{signed:t,ctr:n,hmac:r,pending:s,ready:a}=this;if(r&&n){await a;const i=Ut(s,0,s.length-pt),o=Ut(s,s.length-pt);let c=new d;if(i.length){const e=Lt(bt,i);r.update(e);const t=n.update(e);c=At(bt,t)}if(t){const e=Ut(At(bt,r.digest()),0,pt);for(let t=0;pt>t;t++)if(e[t]!=o[t])throw new f(st)}e.enqueue(c)}}})}}class Dt extends x{constructor({password:e,rawPassword:t,encryptionStrength:r}){let s;super({start(){n.assign(this,{ready:new y((e=>this.resolveReady=e)),password:Tt(e,t),strength:r-1,pending:new d})},async transform(e,t){const n=this,{password:r,strength:s,resolveReady:a,ready:i}=n;let o=new d;r?(o=await(async(e,t,n)=>{const r=it(new d(ft[t]));return Wt(r,await Ct(e,t,n,r))})(n,s,r),a()):await i;const c=new d(o.length+e.length-e.length%ot);c.set(o,0),t.enqueue(Ft(n,e,c,o.length,0))},async flush(e){const{ctr:t,hmac:n,pending:r,ready:a}=this;if(n&&t){await a;let i=new d;if(r.length){const e=t.update(Lt(bt,r));n.update(e),i=At(bt,e)}s.signature=At(bt,n.digest()).slice(0,pt),e.enqueue(Wt(i,s.signature))}}}),s=this}}function Ft(e,t,n,r,s,a){const{ctr:i,hmac:o,pending:c}=e,l=t.length-s;let u;for(c.length&&(t=Wt(c,t),n=((e,t)=>{if(t&&t>e.length){const n=e;(e=new d(t)).set(n,0)}return e})(n,l-l%ot)),u=0;l-ot>=u;u+=ot){const e=Lt(bt,Ut(t,u,u+ot));a&&o.update(e);const s=i.update(e);a||o.update(s),n.set(At(bt,s),u+r)}return e.pending=Ut(t,u),n}async function Ct(e,r,s,a){e.password=null;const i=await(async(e,t,n,r,s)=>{if(!zt)return tt.importKey(t);try{return await mt.importKey("raw",t,n,!1,s)}catch(e){return zt=!1,tt.importKey(t)}})(0,s,lt,0,ht),o=await(async(e,t,n)=>{if(!xt)return tt.pbkdf2(t,e.salt,ut.iterations,n);try{return await mt.deriveBits(e,t,n)}catch(r){return xt=!1,tt.pbkdf2(t,e.salt,ut.iterations,n)}})(n.assign({salt:a},ut),i,8*(2*dt[r]+2)),c=new d(o),l=Lt(bt,Ut(c,0,dt[r])),u=Lt(bt,Ut(c,dt[r],2*dt[r])),h=Ut(c,2*dt[r]);return n.assign(e,{keys:{key:l,authentication:u,passwordVerification:h},ctr:new kt(new vt(l),t.from(wt)),hmac:new St(u)}),h}function Tt(e,t){return t===xe?(e=>{if(typeof b==_e){const t=new d((e=unescape(encodeURIComponent(e))).length);for(let n=0;n<t.length;n++)t[n]=e.charCodeAt(n);return t}return(new b).encode(e)})(e):t}function Wt(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 Ut(e,t,n){return e.subarray(t,n)}function At(e,t){return e.fromBits(t)}function Lt(e,t){return e.toBits(t)}class Et extends x{constructor({password:e,passwordVerification:t,checkPasswordOnly:r}){super({start(){n.assign(this,{password:e,passwordVerification:t}),Pt(this,e)},transform(e,t){const n=this;if(n.password){const t=Bt(n,e.subarray(0,12));if(n.password=null,t[11]!=n.passwordVerification)throw new f(rt);e=e.subarray(12)}r?t.error(new f(at)):t.enqueue(Bt(n,e))}})}}class Rt extends x{constructor({password:e,passwordVerification:t}){super({start(){n.assign(this,{password:e,passwordVerification:t}),Pt(this,e)},transform(e,t){const n=this;let r,s;if(n.password){n.password=null;const t=it(new d(12));t[11]=n.passwordVerification,r=new d(e.length+t.length),r.set(Mt(n,t),0),s=12}else r=new d(e.length),s=0;r.set(Mt(n,e),s),t.enqueue(r)}})}}function Bt(e,t){const n=new d(t.length);for(let r=0;r<t.length;r++)n[r]=It(e)^t[r],Ot(e,n[r]);return n}function Mt(e,t){const n=new d(t.length);for(let r=0;r<t.length;r++)n[r]=It(e)^t[r],Ot(e,t[r]);return n}function Pt(e,t){const r=[305419896,591751049,878082192];n.assign(e,{keys:r,crcKey0:new Je(r[0]),crcKey2:new Je(r[2])});for(let n=0;n<t.length;n++)Ot(e,t.charCodeAt(n))}function Ot(e,t){let[n,r,s]=e.keys;e.crcKey0.append([t]),n=~e.crcKey0.get(),r=Vt(i.imul(Vt(r+Nt(n)),134775813)+1),e.crcKey2.append([r>>>24]),s=~e.crcKey2.get(),e.keys=[n,r,s]}function It(e){const t=2|e.keys[2];return Nt(i.imul(t,1^t)>>>8)}function Nt(e){return 255&e}function Vt(e){return 4294967295&e}const qt="deflate-raw";class Ht extends x{constructor(e,{chunkSize:t,CompressionStream:n,CompressionStreamNative:r}){super({});const{compressed:s,encrypted:a,useCompressionStream:i,zipCrypto:o,signed:c,level:l}=e,u=this;let h,f,d=Zt(super.readable);a&&!o||!c||(h=new Qe,d=Jt(d,h)),s&&(d=Gt(d,i,{level:l,chunkSize:t},r,n)),a&&(o?d=Jt(d,new Rt(e)):(f=new Dt(e),d=Jt(d,f))),jt(u,d,(()=>{let e;a&&!o&&(e=f.signature),a&&!o||!c||(e=new g(h.value.buffer).getUint32(0)),u.signature=e}))}}class Kt extends 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super.getData();if(r.text&&t)return r.text();{const t=new FileReader;return new y(((s,a)=>{n.assign(t,{onload:({target:e})=>s(e.result),onerror:()=>a(t.error)}),t.readAsText(r,e)}))}}},e.ZipReader=class{constructor(e,t={}){n.assign(this,{reader:Ze(e),options:t,config:Le})}async*getEntriesGenerator(e={}){const t=this;let{reader:r}=t;const{config:s}=t;if(await Ke(r),r.size!==xe&&r.readUint8Array||(r=new Ne(await new u(r.readable).blob()),await Ke(r)),22>r.size)throw new f(An);r.chunkSize=(e=>i.max(e.chunkSize,64))(s);const a=await(async(e,t,n)=>{const r=new d(4);return Qn(r).setUint32(0,101010256,!0),await s(22)||await s(i.min(1048582,n));async function s(t){const s=n-t,a=await je(e,s,t);for(let e=a.length-22;e>=0;e--)if(a[e]==r[0]&&a[e+1]==r[1]&&a[e+2]==r[2]&&a[e+3]==r[3])return{offset:s+e,buffer:a.slice(e,e+22).buffer}}})(r,0,r.size);if(!a)throw 134695760==Gn(Qn(await je(r,0,4)))?new f(En):new f("End of central directory not found");const o=Qn(a);let c=Gn(o,12),l=Gn(o,16);const h=a.offset,p=jn(o,20),w=h+22+p;let g=jn(o,4);const m=r.lastDiskNumber||0;let y=jn(o,6),b=jn(o,8),v=0,k=0;if(l==ve||c==ve||b==ke||y==ke){const e=Qn(await je(r,a.offset-20,20));if(117853008==Gn(e,0)){l=Jn(e,8);let t=await je(r,l,56,-1),n=Qn(t);const s=a.offset-20-56;if(Gn(n,0)!=ze&&l!=s){const e=l;l=s,v=l-e,t=await je(r,l,56,-1),n=Qn(t)}if(Gn(n,0)!=ze)throw new f("End of Zip64 central directory locator not found");g==ke&&(g=Gn(n,16)),y==ke&&(y=Gn(n,20)),b==ke&&(b=Jn(n,32)),c==ve&&(c=Jn(n,40)),l-=c}}if(l<r.size||(v=r.size-l-c-22,l=r.size-c-22),m!=g)throw new f(En);if(0>l)throw new f(An);let S=0,z=await je(r,l,c,y),x=Qn(z);if(c){const e=a.offset-c;if(Gn(x,S)!=Se&&l!=e){const t=l;l=e,v+=l-t,z=await je(r,l,c,y),x=Qn(z)}}const _=a.offset-l-(r.lastDiskOffset||0);if(c==_||0>_||(c=_,z=await je(r,l,c,y),x=Qn(z)),0>l||l>=r.size)throw new f(An);const D=qn(t,e,"filenameEncoding"),F=qn(t,e,"commentEncoding");for(let a=0;b>a;a++){const o=new On(r,s,t.options);if(Gn(x,S)!=Se)throw new f("Central directory header not found");In(o,x,S+6);const c=!!o.bitFlag.languageEncodingFlag,l=S+46,u=l+o.filenameLength,h=u+o.extraFieldLength,d=jn(x,S+4),p=!0,w=z.subarray(l,u),g=jn(x,S+32),m=h+g,y=z.subarray(h,m),_=c,C=c,T=!(16&~Zn(x,S+38)),W=Gn(x,S+42)+v;n.assign(o,{versionMadeBy:d,msDosCompatible:p,compressedSize:0,uncompressedSize:0,commentLength:g,directory:T,offset:W,diskNumberStart:jn(x,S+34),internalFileAttribute:jn(x,S+36),externalFileAttribute:Gn(x,S+38),rawFilename:w,filenameUTF8:_,commentUTF8:C,rawExtraField:z.subarray(u,h)});const U=qn(t,e,"decodeText")||mn,A=_?Rn:D||Bn,L=C?Rn:F||Bn;let E=U(w,A);E===xe&&(E=mn(w,A));let R=U(y,L);R===xe&&(R=mn(y,L)),n.assign(o,{rawComment:y,filename:E,comment:R,directory:T||E.endsWith("/")}),k=i.max(W,k),await Nn(o,o,x,S+6);const B=new Un(o);B.getData=(e,t)=>o.getData(e,B,t),S=m;const{onprogress:M}=e;if(M)try{await M(a+1,b,new Un(o))}catch(e){}yield B}const C=qn(t,e,"extractPrependedData"),T=qn(t,e,"extractAppendedData");return C&&(t.prependedData=k>0?await je(r,0,k):new d),t.comment=p?await je(r,h+22,p):new d,T&&(t.appendedData=w<r.size?await je(r,w,r.size-w):new d),!0}async getEntries(e={}){const t=[];for await(const n of this.getEntriesGenerator(e))t.push(n);return t}async close(){}},e.configure=Ee},"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).zip={});
    2.