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pdfjs-dist

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Generic build of Mozilla's PDF.js library.

mozilla.github.io/pdf.js/

mozilla/pdfjs-dist

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/** * @licstart The following is the entire license notice for the * Javascript code in this page * * Copyright 2021 Mozilla Foundation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * @licend The above is the entire license notice for the * Javascript code in this page */ !function webpackUniversalModuleDefinition(t,r){"object"==typeof exports&&"object"==typeof module?module.exports=r():"function"==typeof define&&define.amd?define("pdfjs-dist/image_decoders/pdf.image_decoders",[],r):"object"==typeof exports?exports["pdfjs-dist/image_decoders/pdf.image_decoders"]=r():t["pdfjs-dist/image_decoders/pdf.image_decoders"]=t.pdfjsImageDecoders=r()}(this,(function(){return(()=>{var t=[,(t,r,i)=>{"use strict";Object.defineProperty(r,"__esModule",{value:!0});r.arrayByteLength=arrayByteLength;r.arraysToBytes=function arraysToBytes(t){var r=t.length;if(1===r&&t[0]instanceof Uint8Array)return t[0];for(var i=0,o=0;o<r;o++)i+=arrayByteLength(t[o]);for(var a=0,c=new Uint8Array(i),u=0;u<r;u++){var l=t[u];l instanceof Uint8Array||(l="string"==typeof l?stringToBytes(l):new Uint8Array(l));var h=l.byteLength;c.set(l,a);a+=h}return c};r.assert=assert;r.bytesToString=function bytesToString(t){assert(null!==t&&"object"===_typeof(t)&&void 0!==t.length,"Invalid argument for bytesToString");var r=t.length,i=8192;if(r<i)return String.fromCharCode.apply(null,t);for(var o=[],a=0;a<r;a+=i){var 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isEvalSupported(){try{new Function("");return!0}catch(t){return!1}}())}};r.IsEvalSupportedCached=b;var x=function _toConsumableArray(t){return function _arrayWithoutHoles(t){if(Array.isArray(t))return _arrayLikeToArray(t)}(t)||function _iterableToArray(t){if("undefined"!=typeof Symbol&&Symbol.iterator in Object(t))return Array.from(t)}(t)||_unsupportedIterableToArray(t)||function _nonIterableSpread(){throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}()}(Array(256).keys()).map((function(t){return t.toString(16).padStart(2,"0")})),w=function(){function Util(){_classCallCheck(this,Util)}!function _createClass(t,r,i){r&&_defineProperties(t.prototype,r);i&&_defineProperties(t,i);return t}(Util,null,[{key:"makeHexColor",value:function makeHexColor(t,r,i){return"#".concat(x[t]).concat(x[r]).concat(x[i])}},{key:"transform",value:function 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l("invalid segment type: "+u);o.type=u;o.typeName=t[u];o.deferredNonRetain=!!(128&c);var h=!!(64&c),p=r[i+5],m=p>>5&7,g=[31&p],y=i+6;if(7===p){m=536870911&(0,a.readUint32)(r,y-1);y+=3;var v=m+7>>3;g[0]=r[y++];for(;--v>0;)g.push(r[y++])}else if(5===p||6===p)throw new l("invalid referred-to flags");o.retainBits=g;var b=4;o.number<=256?b=1:o.number<=65536&&(b=2);var x,w,_=[];for(x=0;x<m;x++){var S=void 0;S=1===b?r[y]:2===b?(0,a.readUint16)(r,y):(0,a.readUint32)(r,y);_.push(S);y+=b}o.referredTo=_;if(h){o.pageAssociation=(0,a.readUint32)(r,y);y+=4}else o.pageAssociation=r[y++];o.length=(0,a.readUint32)(r,y);y+=4;if(4294967295===o.length){if(38!==u)throw new l("invalid unknown segment length");var C=readRegionSegmentInformation(r,y),T=!!(1&r[y+d]),P=new Uint8Array(6);if(!T){P[0]=255;P[1]=172}P[2]=C.height>>>24&255;P[3]=C.height>>16&255;P[4]=C.height>>8&255;P[5]=255&C.height;for(x=y,w=r.length;x<w;x++){for(var I=0;I<6&&P[I]===r[x+I];)I++;if(6===I){o.length=x+6;break}}if(4294967295===o.length)throw new l("segment end was not found")}o.headerEnd=y;return o}function readSegments(t,r,i,o){for(var a=[],c=i;c<o;){var u=readSegmentHeader(r,c);c=u.headerEnd;var l={header:u,data:r};if(!t.randomAccess){l.start=c;c+=u.length;l.end=c}a.push(l);if(51===u.type)break}if(t.randomAccess)for(var h=0,p=a.length;h<p;h++){a[h].start=c;c+=a[h].header.length;a[h].end=c}return a}function readRegionSegmentInformation(t,r){return{width:(0,a.readUint32)(t,r),height:(0,a.readUint32)(t,r+4),x:(0,a.readUint32)(t,r+8),y:(0,a.readUint32)(t,r+12),combinationOperator:7&t[r+16]}}var d=17;function processSegment(t,r){var i,o,c,u,h=t.header,p=t.data,m=t.start,g=t.end;switch(h.type){case 0:var y={},v=(0,a.readUint16)(p,m);y.huffman=!!(1&v);y.refinement=!!(2&v);y.huffmanDHSelector=v>>2&3;y.huffmanDWSelector=v>>4&3;y.bitmapSizeSelector=v>>6&1;y.aggregationInstancesSelector=v>>7&1;y.bitmapCodingContextUsed=!!(256&v);y.bitmapCodingContextRetained=!!(512&v);y.template=v>>10&3;y.refinementTemplate=v>>12&1;m+=2;if(!y.huffman){u=0===y.template?4:1;o=[];for(c=0;c<u;c++){o.push({x:(0,a.readInt8)(p,m),y:(0,a.readInt8)(p,m+1)});m+=2}y.at=o}if(y.refinement&&!y.refinementTemplate){o=[];for