34 lines
16 KiB
JavaScript
34 lines
16 KiB
JavaScript
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function(){function a(a){return function(k){d||(d=!0,a.call(b,k))}}var b=this,d=!1;return{resolve:a(this.resolveTo_),reject:a(this.reject_)}};a.prototype.resolveTo_=function(k){if(k===this)this.reject_(new TypeError("A Promise cannot resolve to itself"));else if(k instanceof a)this.settleSameAsPromise_(k);else{a:switch(typeof k){case "object":var b=null!=k;break a;case "function":b=!0;break a;default:b=!1}b?this.resolveToNonPromiseObj_(k):this.fulfill_(k)}};a.prototype.resolveToNonPromiseObj_=function(a){var b=
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void 0;try{b=a.then}catch(u){this.reject_(u);return}"function"==typeof b?this.settleSameAsThenable_(b,a):this.fulfill_(a)};a.prototype.reject_=function(a){this.settle_(2,a)};a.prototype.fulfill_=function(a){this.settle_(1,a)};a.prototype.settle_=function(a,b){if(0!=this.state_)throw Error("Cannot settle("+a+", "+b+"): Promise already settled in state"+this.state_);this.state_=a;this.result_=b;this.executeOnSettledCallbacks_()};a.prototype.executeOnSettledCallbacks_=function(){if(null!=this.onSettledCallbacks_){for(var a=
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0;a<this.onSettledCallbacks_.length;++a)d.asyncExecute(this.onSettledCallbacks_[a]);this.onSettledCallbacks_=null}};var d=new b;a.prototype.settleSameAsPromise_=function(a){var b=this.createResolveAndReject_();a.callWhenSettled_(b.resolve,b.reject)};a.prototype.settleSameAsThenable_=function(a,b){var d=this.createResolveAndReject_();try{a.call(b,d.resolve,d.reject)}catch(q){d.reject(q)}};a.prototype.then=function(b,d){function g(a,b){return"function"==typeof a?function(b){try{k(a(b))}catch(v){c(v)}}:
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b}var k,c,l=new a(function(a,b){k=a;c=b});this.callWhenSettled_(g(b,k),g(d,c));return l};a.prototype.catch=function(a){return this.then(void 0,a)};a.prototype.callWhenSettled_=function(a,b){function g(){switch(k.state_){case 1:a(k.result_);break;case 2:b(k.result_);break;default:throw Error("Unexpected state: "+k.state_);}}var k=this;null==this.onSettledCallbacks_?d.asyncExecute(g):this.onSettledCallbacks_.push(g)};a.resolve=l;a.reject=function(b){return new a(function(a,d){d(b)})};a.race=function(b){return new a(function(a,
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++n.fs_read_counter;n.fs_read_counter>=n.fs_read_total&&(n.needCallback?c._finish_do_call_operation(n.fs_q):d.AsyncFSHack.readingAsyncFS=0,delete d.AsyncFSHack.readCalls[a])},C=function(a,n,b,h,f,e){this.lruList=[];this.chunkMap={};this.chunkReader={};this.chunkMap[n]=h;this.length=n;this.cacheDataSize=b;this.url=a;this.customHeaders=f;this.withCredentials=e;this.chunkSize=1048576};C.prototype={lruUpdate:function(a){var b=this.lruList.lastIndexOf(a);0<=b&&this.lruList.splice(b,1);this.lruList.push(a)},
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this.downloadChunk(t))}},wrapChunkRetrieval:function(a,b,d){this.downloadChunk(a,function(a){d(a,b)})},downloadChunks:function(a,b){for(var n=a.length,h=Array(n),f=0,e=function(a,e){h[e]=a;++f;f===n&&b(h)},m=0;m<n;++m)this.wrapChunkRetrieval(a[m][0],m,e)},readFromCache:function(a,b,d){var h=[],f=0,e=Math.floor(b/this.chunkSize)*this.chunkSize,m=b%this.chunkSize;b=this.chunkSize-m;b=b>d?d:b;this.chunkMap[e]?(m=this.chunkMap[e].subarray(m,m+b),a.set(m),this.lruUpdate(e)):this.hadChunk(e)?h.push([e,
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m,b,f]):(m=new Int8Array(b),a.set(m));for(d-=b;0<d;)f+=b,e+=this.chunkSize,b=this.chunkSize>d?d:this.chunkSize,this.chunkMap[e]?(m=this.chunkMap[e].subarray(0,b),a.set(m,f),this.lruUpdate(e)):this.hadChunk(e)?h.push([e,0,b,f]):(m=new Int8Array(b),a.set(m,f)),d-=b;return h},writeChunk:function(a,b,d){d=d||0;var h=this.chunkMap[b],f=a.length,e=this.lruList.length>=c.chunkMax&&!h;f!==this.chunkSize||a.buffer.byteLength!==f?(e?(h=this.lruList.shift(),e=this.chunkMap[h],e.length<this.chunkSize&&(e=new Int8Array(this.chunkSize)),
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this.chunkMap[h]=null):e=h?this.chunkMap[b]:new Int8Array(this.chunkSize),e.subarray(d,d+f).set(a),a=e):e&&(h=this.lruList.shift(),this.chunkMap[h]=null);this.lruUpdate(b);this.chunkMap[b]=a}};var B=function(a){this.chunkStorage=a;this.position=0;this.length=this.chunkStorage.length};B.prototype={read:function(a,b,c,h){var f=h+c<=this.length,e=f?c:this.length-h,m=d.AsyncFSHack.readingCounter.toString();if(0<e){z(m);var n=a.subarray(b,b+e);var g=this.chunkStorage.readFromCache(n,h,e);g.length?(d.AsyncFSHack.readCalls[m].needCallback=
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this.chunkStorage.writeChunk(m,h-c,c);h+=e}else e=0;if(!f){m=b+e;if(d-=e)b=this.chunkStorage.getCacheData(),d>b.length&&(d=b.length),f=h-this.length,d-=f,m=a.subarray(m,m+d),b.subarray(f,f+d).set(m);h+=d;e+=d}this.position=h;return e},seek:function(a){this.position=a},close:function(){this.chunkStorage=null},getPos:function(){return this.position},getTotalSize:function(){return this.length+this.chunkStorage.cacheDataSize}};var w=function(a){this.file=a;this.filePosition=0;this.fileLength=a.size;this.readerPool=
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[]};w.prototype={readFromFile:function(a,b,d){var h=this.readerPool.length?this.readerPool.pop():new FileReader;var f=this;h.onload=function(){var a=new Int8Array(h.result);f.readerPool.push(h);d(a)};h.readAsArrayBuffer(this.file.slice(b,b+a))},read:function(a,b,c,h){c=h+c<=this.fileLength?c:this.fileLength-h;if(0<c){var f=d.AsyncFSHack.readingCounter.toString();z(f);var e=a.subarray(b,b+c);d.AsyncFSHack.readCalls[f].needCallback=!0;this.readFromFile(c,h,function(a){e.set(a);A(f)});this.filePosition=
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h+c}return c},seek:function(a){this.filePosition=a},close:function(){this.reader=this.file=null},getPos:function(){return this.filePosition},getTotalSize:function(){return this.fileLength}};var v={open:function(a){var b=a.path.slice(1);a.provider=c.docs[b].chunkStorage?new B(c.docs[b].chunkStorage):new w(c.docs[b])},close:function(a){a.provider.close()},read:function(a,b,d,h,f){return a.provider.read(b,d,h,f)},llseek:function(a,b,c){a=a.provider;1===c?b+=a.getPos():2===c&&(b=a.getTotalSize()+b);if(0>
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b)throw new d.FS.ErrnoError(g.ERRNO_CODES.EINVAL);a.seek(b);return b},write:function(a,b,d,c,f){return c?a.provider.write(b,d,c,f):0}},y=function(a){if(!q[a]){var b=d.FS.makedev(3,5);d.FS.registerDevice(b,v);d.FS.mkdev(a,511,b);q[a]=!0}},p=function(a,b,d,h){var f="docdev"+ ++u;y(f);var e=Math.ceil((b+1048576-1)/1048576/8),m=new Int8Array(new ArrayBuffer(e));a=new C(a,b,e,m,d,h);c.docs[f]={chunkStorage:a};return f},E=function(a){var b="docdev"+ ++u;y(b);c.docs[b]=a;return b},r=function(a){d.FS.unlink(a);
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e&&c)e=c.value,"url"===c.type?(e=Object(a.b)(e.url,e.size,e.customHeaders,e.withCredentials),v[f]=e,c.value.docDevId=e):Object(a.d)(e)&&(e=Object(a.a)(e),v[f]=e,c.value=e);else if("SaveDoc"!==e&&"SaveDocFromFixedElements"!==e||!c)"GetCanvas"===e&&c?(f=c.docId,f in p&&(e=p[f],e in d.Module.docs&&(e=d.Module.docs[e],"chunkStorage"in e&&(c=d.Module.GetRequiredChunkOffsetArray(f,c.pageIndex+1),c.length&&e.chunkStorage.updateCache(c))))):"DeleteDocument"===e&&c&&(c=c.docId,c in p&&(y[f]=c));else{e=c.docId;
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