pdfviewer/dist/js/pdf.worker.js

PDF Viewer using Mozila PDF JS.

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i=t[a],n=Ee.fromRef(this.xref,i);n&&e.push(n)}return o(this,"annotations",e)}},e}(),ve=function(){function t(e,t,i){I(t)?r.call(this,e,t,i):T(t)?r.call(this,e,new Ra(t),i):a("PDFDocument: Unknown argument type")}function r(e,t,a){i(t.length>0,"stream must have data"),this.pdfManager=e,this.stream=t;var r=new Be(this.stream,a,e);this.xref=r}function n(e,t,a,r){var i=e.pos,n=e.end,o=[];i+a>n&&(a=n-i);for(var s=0;a>s;++s)o.push(String.fromCharCode(e.getByte()));var c=o.join("");e.pos=i;var l=r?c.lastIndexOf(t):c.indexOf(t);return-1===l?!1:(e.pos+=l,!0)}var s=1024,l="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",h={get entries(){return o(this,"entries",{Title:x,Author:x,Subject:x,Keywords:x,Creator:x,Producer:x,CreationDate:x,ModDate:x,Trapped:C})}};return t.prototype={parse:function(t){this.setup(t);try{if(this.acroForm=this.catalog.catDict.get("AcroForm"),this.acroForm){this.xfa=this.acroForm.get("XFA");var a=this.acroForm.get("Fields");a&&B(a)&&0!==a.length||this.xfa||(this.acroForm=null)}}catch(r){e("Something wrong with AcroForm entry"),this.acroForm=null}},get linearization(){var t=null;if(this.stream.length)try{t=Ia.create(this.stream)}catch(a){if(a instanceof ie)throw a;e(a)}return o(this,"linearization",t)},get startXRef(){var e=this.stream,t=0,a=this.linearization;if(a)e.reset(),n(e,"endobj",1024)&&(t=e.pos+6);else{for(var r=1024,i=!1,s=e.end;!i&&s>0;)s-=r-"startxref".length,0>s&&(s=0),e.pos=s,i=n(e,"startxref",r,!0);if(i){e.skip(9);var c;do c=e.getByte();while(Ba.isSpace(c));for(var l="";c>=32&&57>=c;)l+=String.fromCharCode(c),c=e.getByte();t=parseInt(l,10),isNaN(t)&&(t=0)}}return o(this,"startXRef",t)},get mainXRefEntriesOffset(){var e=0,t=this.linearization;return t&&(e=t.mainXRefEntriesOffset),o(this,"mainXRefEntriesOffset",e)},checkHeader:function(){var e=this.stream;if(e.reset(),n(e,"%PDF-",1024)){e.moveStart();for(var t,a=12,r="";(t=e.getByte())>32&&!(r.length>=a);)r+=String.fromCharCode(t);return void(this.pdfFormatVersion=r.substring(5))}},parseStartXRef:function(){var e=this.startXRef;this.xref.setStartXRef(e)},setup:function(e){this.xref.parse(e),this.catalog=new Ae(this.pdfManager,this.xref)},get numPages(){var e=this.linearization,t=e?e.numPages:this.catalog.numPages;return o(this,"numPages",t)},get documentInfo(){var t,a={PDFFormatVersion:this.pdfFormatVersion,IsAcroFormPresent:!!this.acroForm,IsXFAPresent:!!this.xfa};try{t=this.xref.trailer.get("Info")}catch(r){e("The document information dictionary is invalid.")}if(t){var i=h.entries;for(var n in i)if(t.has(n)){var s=t.get(n);i[n](s)?a[n]="string"!=typeof s?s:p(s):e('Bad value in document info for "'+n+'"')}}return o(this,"documentInfo",a)},get fingerprint(){var e,t,a=this.xref,r="";a.trailer.has("ID")&&(e=a.trailer.get("ID")),e&&B(e)&&e[0]!==l?t=c(e[0]):(this.stream.ensureRange&&this.stream.ensureRange(0,Math.min(s,this.stream.end)),t=at(this.stream.bytes.subarray(0,s),0,s));for(var i=0,n=t.length;n>i;i++){var h=t[i].toString(16);r+=1===h.length?"0"+h:h}return o(this,"fingerprint",r)},getPage:function(e){return this.catalog.getPage(e)},cleanup:function(){return this.catalog.cleanup()}},t}(),ye=function(){function e(e){this.name=e}e.prototype={};var t={};return e.get=function(a){var r=t[a];return r?r:t[a]=new e(a)},e}(),ke=function(){function e(e){this.cmd=e}e.prototype={};var t={};return e.get=function(a){var r=t[a];return r?r:t[a]=new e(a)},e}(),we=function(){function e(e){if(!C(e.Type))return!0;var t=e.Type.name;return r[t]===!0}function t(e){this.map=Object.create(null),this.xref=e,this.objId=null,this.__nonSerializable__=a}var a=function(){return a},r={Background:!0,ExtGState:!0,Halftone:!0,Layout:!0,Mask:!0,Pagination:!0,Printing:!0};return t.prototype={assignXref:function(e){this.xref=e},get:function(e,t,a){var r,i=this.xref;return"undefined"!=typeof(r=this.map[e])||e in this.map||"undefined"==typeof t?i?i.fetchIfRef(r):r:"undefined"!=typeof(r=this.map[t])||t in this.map||"undefined"==typeof a?i?i.fetchIfRef(r):r:(r=this.map[a]||null,i?i.fetchIfRef(r):r)},getAsync:function(e,t,a){var r,i=this.xref;return"undefined"!=typeof(r=this.map[e])||e in this.map||"undefined"==typeof t?i?i.fetchIfRefAsync(r):Promise.resolve(r):"undefined"!=typeof(r=this.map[t])||t in this.map||"undefined"==typeof a?i?i.fetchIfRefAsync(r):Promise.resolve(r):(r=this.map[a]||null,i?i.fetchIfRefAsync(r):Promise.resolve(r))},getRaw:function(e){return this.map[e]},getAll:function(){var a,r,i=Object.create(null),n=null;for(a in this.map)r=this.get(a),r instanceof t?e(r)?(n||(n=[])).push({target:i,key:a,obj:r}):i[a]=this.getRaw(a):i[a]=r;if(!n)return i;for(var o=Object.create(null);n.length>0;){var s=n.shift(),c=s.obj,l=c.objId;if(l&&l in o)s.target[s.key]=o[l];else{var h=Object.create(null);for(a in c.map)r=c.get(a),r instanceof t?e(r)?n.push({target:h,key:a,obj:r}):h[a]=c.getRaw(a):h[a]=r;l&&(o[l]=h),s.target[s.key]=h}}return i},set:function(e,t){this.map[e]=t},has:function(e){return e in this.map},forEach:function(e){for(var t in this.map)e(t,this.get(t))}},t.empty=new t(null),t}(),xe=function(){function e(e,t){this.num=e,this.gen=t}return e.prototype={toString:function(){var e=this.num+"R";return 0!==this.gen&&(e+=this.gen),e}},e}(),Ce=function(){function e(){this.dict={}}return e.prototype={has:function(e){return e.toString()in this.dict},put:function(e){this.dict[e.toString()]=!0},remove:function(e){delete this.dict[e.toString()]}},e}(),Se=function(){function e(){this.dict=Object.create(null)}return e.prototype={get:function(e){return this.dict[e.toString()]},has:function(e){return e.toString()in this.dict},put:function(e,t){this.dict[e.toString()]=t},putAlias:function(e,t){this.dict[e.toString()]=this.get(t)},forEach:function(e,t){for(var a in this.dict)e.call(t,this.dict[a])},clear:function(){this.dict=Object.create(null)}},e}(),Ae=function(){function r(e,t){this.pdfManager=e,this.xref=t,this.catDict=t.getCatalogObj(),this.fontCache=new Se,i(A(this.catDict),"catalog object is not a dictionary"),this.pagePromises=[]}return r.prototype={get metadata(){var t=this.catDict.getRaw("Metadata");if(!O(t))return o(this,"metadata",null);var a,r=this.xref.encrypt?this.xref.encrypt.encryptMetadata:!1,i=this.xref.fetch(t,!r);if(i&&A(i.dict)){var n=i.dict.get("Type"),c=i.dict.get("Subtype");if(C(n)&&C(c)&&"Metadata"===n.name&&"XML"===c.name)try{a=b(s(i.getBytes()))}catch(l){e("Skipping invalid metadata.")}}return o(this,"metadata",a)},get toplevelPagesDict(){var e=this.catDict.get("Pages");return i(A(e),"invalid top-level pages dictionary"),o(this,"toplevelPagesDict",e)},get documentOutline(){var e=null;try{e=this.readDocumentOutline()}catch(a){if(a instanceof ie)throw a;t("Unable to read document outline")}return o(this,"documentOutline",e)},readDocumentOutline:function(){var e=this.xref,t=this.catDict.get("Outlines"),r={items:[]};if(A(t)){t=t.getRaw("First");var i=new Ce;if(O(t)){var n=[{obj:t,parent:r}];for(i.put(t);n.length>0;){var o=n.shift(),s=e.fetchIfRef(o.obj);if(null!==s){s.has("Title")||a("Invalid outline item");var c=s.get("A");c?c=c.get("D"):s.has("Dest")&&(c=s.getRaw("Dest"),C(c)&&(c=c.name));var l=s.get("Title"),h={dest:c,title:p(l),color:s.get("C")||[0,0,0],count:s.get("Count"),bold:!!(2&s.get("F")),italic:!!(1&s.get("F")),items:[]};o.parent.items.push(h),t=s.getRaw("First"),O(t)&&!i.has(t)&&(n.push({obj:t,parent:h}),i.put(t)),t=s.getRaw("Next"),O(t)&&!i.has(t)&&(n.push({obj:t,parent:o.parent}),i.put(t))}}}}return r.items.length>0?r.items:null},get numPages(){var e=this.toplevelPagesDict.get("Count");return i(k(e),"page count in top level pages object is not an integer"),o(this,"num",e)},get destinations(){function e(e){return A(e)?e.get("D"):e}var t,a,r=this.xref,i={},n=this.catDict.get("Names");if(n&&n.has("Dests")?t=n.getRaw("Dests"):this.catDict.has("Dests")&&(a=this.catDict.get("Dests")),a&&(n=a,n.forEach(function(t,a){a&&(i[t]=e(a))})),t){var s=new Ie(t,r),c=s.getAll();for(var l in c)c.hasOwnProperty(l)&&(i[l]=e(c[l]))}return o(this,"destinations",i)},getDestination:function(e){function t(e){return A(e)?e.get("D"):e}var a,r,i,n=this.xref,o=this.catDict.get("Names");if(o&&o.has("Dests")?r=o.getRaw("Dests"):this.catDict.has("Dests")&&(i=this.catDict.get("Dests")),i&&(o=i,o.forEach(function(r,i){i&&r===e&&(a=t(i))})),r){var s=new Ie(r,n);a=t(s.get(e))}return a},get attachments(){var e,t=this.xref,a=null,r=this.catDict.get("Names");if(r&&(e=r.getRaw("EmbeddedFiles")),e){var i=new Ie(e,t),n=i.getAll();for(var s in n)if(n.hasOwnProperty(s)){var c=new Te(n[s],t);a||(a={}),a[p(s)]=c.serializable}}return o(this,"attachments",a)},get javaScript(){var e=this.xref,t=this.catDict.get("Names"),a=[];if(t&&t.has("JavaScript")){var r=new Ie(t.getRaw("JavaScript"),e),i=r.getAll();for(var n in i)if(i.hasOwnProperty(n)){var c=i[n];if(A(c)){var l=c.get("S");if(C(l)&&"JavaScript"===l.name){var h=c.get("JS");(x(h)||I(h))&&(I(h)&&(h=s(h.getBytes())),a.push(p(h)))}}}}var u=this.catDict.get("OpenAction");if(A(u)){var f=u.get("Type"),d=u.get("S"),g=u.get("N"),m=C(f)&&"Action"===f.name&&C(d)&&"Named"===d.name&&C(g)&&"Print"===g.name;m&&a.push("print(true);")}return o(this,"javaScript",a)},cleanup:function(){var e=[];return this.fontCache.forEach(function(t){e.push(t)}),Promise.all(e).then(function(e){for(var t=0,a=e.length;a>t;t++){var r=e[t].dict;delete r.translated}this.fontCache.clear()}.bind(this))},getPage:function(e){return e in this.pagePromises||(this.pagePromises[e]=this.getPageDict(e).then(function(t){var a=t[0],r=t[1];return new be(this.pdfManager,this.xref,e,a,r,this.fontCache)}.bind(this))),this.pagePromises[e]},getPageDict:function(e){function t(){for(;r.length;){var s=r.pop();if(O(s))return void o.fetchAsync(s).then(function(i){return A(i,"Page")||A(i)&&!i.has("Kids")?void(e===n?a.resolve([i,s]):(n++,t())):(r.push(i),void t())},a.reject);i(A(s),"page dictionary kid reference points to wrong type of object");var c=s.get("Count");if(e>=n+c)n+=c;else{var l=s.get("Kids");if(i(B(l),"page dictionary kids object is not an array"),c!==l.length)for(var h=l.length-1;h>=0;h--)r.push(l[h]);else r=[l[e-n]],n=e}}a.reject("Page index "+e+" not found.")}var a=P(),r=[this.catDict.getRaw("Pages")],n=0,o=this.xref;return t(),a.promise},getPageIndex:function(e){function t(e){var t,r=0;return n.fetchAsync(e).then(function(e){return e?(t=e.getRaw("Parent"),e.getAsync("Parent")):null}).then(function(e){return e?e.getAsync("Kids"):null}).then(function(o){if(!o)return null;for(var s=[],c=!1,l=0;l<o.length;l++){var h=o[l];if(i(O(h),"kids must be a ref"),h.num===e.num){c=!0;break}s.push(n.fetchAsync(h).then(function(e){if(e.has("Count")){var t=e.get("Count");r+=t}else r++}))}return c||a("kid ref not found in parents kids"),Promise.all(s).then(function(){return[r,t]})})}function r(e){return t(e).then(function(e){if(!e)return o;var t=e[0],a=e[1];return o+=t,r(a)})}var n=this.xref,o=0;return r(e)}},r}(),Be=function(){function r(e,t){this.stream=e,this.entries=[],this.xrefstms={},this.cache=[],this.password=t,this.stats={streamTypes:[],fontTypes:[]}}return r.prototype={setStartXRef:function(e){this.startXRefQueue=[e]},parse:function(e){var r;e?(t("Indexing all PDF objects"),r=this.indexObjects()):r=this.readXRef(),r.assignXref(this),this.trailer=r;var i=r.get("Encrypt");if(i){var n=r.get("ID"),o=n&&n.length?n[0]:"";this.encrypt=new dt(i,o,this.password)}(this.root=r.get("Root"))||a("Invalid root reference")},processXRefTable:function(e){"tableState"in this||(this.tableState={entryNum:0,streamPos:e.lexer.stream.pos,parserBuf1:e.buf1,parserBuf2:e.buf2});var t=this.readXRefTable(e);S(t,"trailer")||a("Invalid XRef table: could not find trailer dictionary");var r=e.getObj();return!A(r)&&r.dict&&(r=r.dict),A(r)||a("Invalid XRef table: could not parse trailer dictionary"),delete this.tableState,r},readXRefTable:function(e){var t=e.lexer.stream,r=this.tableState;t.pos=r.streamPos,e.buf1=r.parserBuf1,e.buf2=r.parserBuf2;for(var i;;){if(!("firstEntryNum"in r&&"entryCount"in r)){if(S(i=e.getObj(),"trailer"))break;r.firstEntryNum=i,r.entryCount=e.getObj()}var n=r.firstEntryNum,o=r.entryCount;k(n)&&k(o)||a("Invalid XRef table: wrong types in subsection header");for(var s=r.entryNum;o>s;s++){r.streamPos=t.pos,r.entryNum=s,r.parserBuf1=e.buf1,r.parserBuf2=e.buf2;var c={};c.offset=e.getObj(),c.gen=e.getObj();var l=e.getObj();S(l,"f")?c.free=!0:S(l,"n")&&(c.uncompressed=!0),k(c.offset)&&k(c.gen)&&(c.free||c.uncompressed)||a("Invalid entry in XRef subsection: "+n+", "+o),this.entries[s+n]||(this.entries[s+n]=c)}r.entryNum=0,r.streamPos=t.pos,r.parserBuf1=e.buf1,r.parserBuf2=e.buf2,delete r.firstEntryNum,delete r.entryCount}return 1===n&&this.entries[1]&&this.entries[1].free&&this.entries.shift(),this.entries[0]&&!this.entries[0].free&&a("Invalid XRef table: unexpected first object"),i},processXRefStream:function(e){if(!("streamState"in this)){var t=e.dict,a=t.get("W"),r=t.get("Index");r||(r=[0,t.get("Size")]),this.streamState={entryRanges:r,byteWidths:a,entryNum:0,streamPos:e.pos}}return this.readXRefStream(e),delete this.streamState,e.dict},readXRefStream:function(e){var t,r,i=this.streamState;e.pos=i.streamPos;for(var n=i.byteWidths,o=n[0],s=n[1],c=n[2],l=i.entryRanges;l.length>0;){var h=l[0],u=l[1];for(k(h)&&k(u)||a("Invalid XRef range fields: "+h+", "+u),k(o)&&k(s)&&k(c)||a("Invalid XRef entry fields length: "+h+", "+u),t=i.entryNum;u>t;++t){i.entryNum=t,i.streamPos=e.pos;var f=0,d=0,g=0;for(r=0;o>r;++r)f=f<<8|e.getByte();for(0===o&&(f=1),r=0;s>r;++r)d=d<<8|e.getByte();for(r=0;c>r;++r)g=g<<8|e.getByte();var m={};switch(m.offset=d,m.gen=g,f){case 0:m.free=!0;break;case 1:m.uncompressed=!0;break;case 2:break;default:a("Invalid XRef entry type: "+f)}this.entries[h+t]||(this.entries[h+t]=m)}i.entryNum=0,i.streamPos=e.pos,l.splice(0,2)}},indexObjects:function(){function e(e,t){for(var a="",r=e[t];13!==r&&10!==r&&!(++t>=e.length);)a+=String.fromCharCode(r),r=e[t];return a}function t(e,t,a){for(var r=a.length,i=e.length,n=0;i>t;){for(var o=0;r>o&&e[t+o]===a[o];)++o;if(o>=r)break;t++,n++}return n}var a=new Uint8Array([116,114,97,105,108,101,114]),r=new Uint8Array([115,116,97,114,116,120,114,101,102]),i=new Uint8Array([101,110,100,111,98,106]),n=new Uint8Array([47,88,82,101,102]),o=this.stream;o.pos=0;for(var s=o.getBytes(),c=o.start,l=s.length,h=[],u=[];l>c;){var f=s[c];if(32!==f&&9!==f&&13!==f&&10!==f)if(37!==f){var d,g=e(s,c);if("xref"===g)c+=t(s,c,a),h.push(c),c+=t(s,c,r);else if(d=/^(\d+)\s+(\d+)\s+obj\b/.exec(g)){this.entries[d[1]]={offset:c,gen:0|d[2],uncompressed:!0};var m=t(s,c,i)+7,p=s.subarray(c,c+m),b=t(p,0,n);m>b&&p[b+5]<64&&(u.push(c),this.xrefstms[c]=1),c+=m}else c+=g.length+1}else do{if(++c,c>=l)break;f=s[c]}while(13!==f&&10!==f);else++c}var v,y;for(v=0,y=u.length;y>v;++v)this.startXRefQueue.push(u[v]),this.readXRef(!0);var k;for(v=0,y=h.length;y>v;++v){o.pos=h[v];var w=new Aa(new Ba(o),!0,this),x=w.getObj();if(S(x,"trailer")&&A(k=w.getObj())&&k.has("ID"))return k}if(k)return k;throw new ee("Invalid PDF structure")},readXRef:function(t){var r=this.stream;try{for(;this.startXRefQueue.length;){var i=this.startXRefQueue[0];r.pos=i+r.start;var n,o=new Aa(new Ba(r),!0,this),s=o.getObj();if(S(s,"xref")){if(n=this.processXRefTable(o),this.topDict||(this.topDict=n),s=n.get("XRefStm"),k(s)){var c=s;c in this.xrefstms||(this.xrefstms[