/* Copyright 2017 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.
*/
'use strict';
var sharedUtil = require('../shared/util.js');
var corePrimitives = require('./primitives.js');
var coreStream = require('./stream.js');
var coreParser = require('./parser.js');
var coreImage = require('./image.js');
var coreColorSpace = require('./colorspace.js');
var coreMurmurHash3 = require('./murmurhash3.js');
var coreFonts = require('./fonts.js');
var coreFunction = require('./function.js');
var corePattern = require('./pattern.js');
var coreCMap = require('./cmap.js');
var coreMetrics = require('./metrics.js');
var coreBidi = require('./bidi.js');
var coreEncodings = require('./encodings.js');
var coreStandardFonts = require('./standard_fonts.js');
var coreUnicode = require('./unicode.js');
var coreGlyphList = require('./glyphlist.js');
var FONT_IDENTITY_MATRIX = sharedUtil.FONT_IDENTITY_MATRIX;
var IDENTITY_MATRIX = sharedUtil.IDENTITY_MATRIX;
var UNSUPPORTED_FEATURES = sharedUtil.UNSUPPORTED_FEATURES;
var ImageKind = sharedUtil.ImageKind;
var OPS = sharedUtil.OPS;
var NativeImageDecoding = sharedUtil.NativeImageDecoding;
var TextRenderingMode = sharedUtil.TextRenderingMode;
var CMapCompressionType = sharedUtil.CMapCompressionType;
var Util = sharedUtil.Util;
var assert = sharedUtil.assert;
var createPromiseCapability = sharedUtil.createPromiseCapability;
var error = sharedUtil.error;
var info = sharedUtil.info;
var isArray = sharedUtil.isArray;
var isNum = sharedUtil.isNum;
var isString = sharedUtil.isString;
var getLookupTableFactory = sharedUtil.getLookupTableFactory;
var warn = sharedUtil.warn;
var Dict = corePrimitives.Dict;
var Name = corePrimitives.Name;
var isEOF = corePrimitives.isEOF;
var isCmd = corePrimitives.isCmd;
var isDict = corePrimitives.isDict;
var isName = corePrimitives.isName;
var isRef = corePrimitives.isRef;
var isStream = corePrimitives.isStream;
var DecodeStream = coreStream.DecodeStream;
var JpegStream = coreStream.JpegStream;
var Stream = coreStream.Stream;
var Lexer = coreParser.Lexer;
var Parser = coreParser.Parser;
var PDFImage = coreImage.PDFImage;
var ColorSpace = coreColorSpace.ColorSpace;
var MurmurHash3_64 = coreMurmurHash3.MurmurHash3_64;
var ErrorFont = coreFonts.ErrorFont;
var FontFlags = coreFonts.FontFlags;
var Font = coreFonts.Font;
var IdentityToUnicodeMap = coreFonts.IdentityToUnicodeMap;
var ToUnicodeMap = coreFonts.ToUnicodeMap;
var getFontType = coreFonts.getFontType;
var isPDFFunction = coreFunction.isPDFFunction;
var PDFFunction = coreFunction.PDFFunction;
var Pattern = corePattern.Pattern;
var getTilingPatternIR = corePattern.getTilingPatternIR;
var CMapFactory = coreCMap.CMapFactory;
var IdentityCMap = coreCMap.IdentityCMap;
var getMetrics = coreMetrics.getMetrics;
var bidi = coreBidi.bidi;
var WinAnsiEncoding = coreEncodings.WinAnsiEncoding;
var StandardEncoding = coreEncodings.StandardEncoding;
var MacRomanEncoding = coreEncodings.MacRomanEncoding;
var SymbolSetEncoding = coreEncodings.SymbolSetEncoding;
var ZapfDingbatsEncoding = coreEncodings.ZapfDingbatsEncoding;
var getEncoding = coreEncodings.getEncoding;
var getStdFontMap = coreStandardFonts.getStdFontMap;
var getSerifFonts = coreStandardFonts.getSerifFonts;
var getSymbolsFonts = coreStandardFonts.getSymbolsFonts;
var getNormalizedUnicodes = coreUnicode.getNormalizedUnicodes;
var reverseIfRtl = coreUnicode.reverseIfRtl;
var getUnicodeForGlyph = coreUnicode.getUnicodeForGlyph;
var getGlyphsUnicode = coreGlyphList.getGlyphsUnicode;
var PartialEvaluator = function PartialEvaluatorClosure() {
var DefaultPartialEvaluatorOptions = {
forceDataSchema: false,
maxImageSize: -1,
disableFontFace: false,
nativeImageDecoderSupport: NativeImageDecoding.DECODE,
ignoreErrors: false
};
function NativeImageDecoder(xref, resources, handler, forceDataSchema) {
this.xref = xref;
this.resources = resources;
this.handler = handler;
this.forceDataSchema = forceDataSchema;
}
NativeImageDecoder.prototype = {
canDecode: function canDecode(image) {
return image instanceof JpegStream && NativeImageDecoder.isDecodable(image, this.xref, this.resources);
},
decode: function decode(image) {
var dict = image.dict;
var colorSpace = dict.get('ColorSpace', 'CS');
colorSpace = ColorSpace.parse(colorSpace, this.xref, this.resources);
var numComps = colorSpace.numComps;
var decodePromise = this.handler.sendWithPromise('JpegDecode', [image.getIR(this.forceDataSchema), numComps]);
return decodePromise.then(function (message) {
var data = message.data;
return new Stream(data, 0, data.length, image.dict);
});
}
};
NativeImageDecoder.isSupported = function NativeImageDecoder_isSupported(image, xref, res) {
var dict = image.dict;
if (dict.has('DecodeParms') || dict.has('DP')) {
return false;
}
var cs = ColorSpace.parse(dict.get('ColorSpace', 'CS'), xref, res);
return (cs.name === 'DeviceGray' || cs.name === 'DeviceRGB') && cs.isDefaultDecode(dict.getArray('Decode', 'D'));
};
NativeImageDecoder.isDecodable = function NativeImageDecoder_isDecodable(image, xref, res) {
var dict = image.dict;
if (dict.has('DecodeParms') || dict.has('DP')) {
return false;
}
var cs = ColorSpace.parse(dict.get('ColorSpace', 'CS'), xref, res);
return (cs.numComps === 1 || cs.numComps === 3) && cs.isDefaultDecode(dict.getArray('Decode', 'D'));
};
function PartialEvaluator(_ref) {
var _this = this;
var pdfManager = _ref.pdfManager,
xref = _ref.xref,
handler = _ref.handler,
pageIndex = _ref.pageIndex,
idFactory = _ref.idFactory,
fontCache = _ref.fontCache,
builtInCMapCache = _ref.builtInCMapCache,
_ref$options = _ref.options,
options = _ref$options === undefined ? null : _ref$options;
this.pdfManager = pdfManager;
this.xref = xref;
this.handler = handler;
this.pageIndex = pageIndex;
this.idFactory = idFactory;
this.fontCache = fontCache;
this.builtInCMapCache = builtInCMapCache;
this.options = options || DefaultPartialEvaluatorOptions;
this.fetchBuiltInCMap = function (name) {
var cachedCMap = _this.builtInCMapCache[name];
if (cachedCMap) {
return Promise.resolve(cachedCMap);
}
return _this.handler.sendWithPromise('FetchBuiltInCMap', { name: name }).then(function (data) {
if (data.compressionType !== CMapCompressionType.NONE) {
_this.builtInCMapCache[name] = data;
}
return data;
});
};
}
var TIME_SLOT_DURATION_MS = 20;
var CHECK_TIME_EVERY = 100;
function TimeSlotManager() {
this.reset();
}
TimeSlotManager.prototype = {
check: function TimeSlotManager_check() {
if (++this.checked < CHECK_TIME_EVERY) {
return false;
}
this.checked = 0;
return this.endTime <= Date.now();
},
reset: function TimeSlotManager_reset() {
this.endTime = Date.now() + TIME_SLOT_DURATION_MS;
this.checked = 0;
}
};
function normalizeBlendMode(value) {
if (!isName(value)) {
return 'source-over';
}
switch (value.name) {
case 'Normal':
case 'Compatible':
return 'source-over';
case 'Multiply':
return 'multiply';
case 'Screen':
return 'screen';
case 'Overlay':
return 'overlay';
case 'Darken':
return 'darken';
case 'Lighten':
return 'lighten';
case 'ColorDodge':
return 'color-dodge';
case 'ColorBurn':
return 'color-burn';
case 'HardLight':
return 'hard-light';
case 'SoftLight':
return 'soft-light';
case 'Difference':
return 'difference';
case 'Exclusion':
return 'exclusion';
case 'Hue':
return 'hue';
case 'Saturation':
return 'saturation';
case 'Color':
return 'color';
case 'Luminosity':
return 'luminosity';
}
warn('Unsupported blend mode: ' + value.name);
return 'source-over';
}
var deferred = Promise.resolve();
var TILING_PATTERN = 1,
SHADING_PATTERN = 2;
PartialEvaluator.prototype = {
clone: function clone() {
var newOptions = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : DefaultPartialEvaluatorOptions;
var newEvaluator = Object.create(this);
newEvaluator.options = newOptions;
return newEvaluator;
},
hasBlendModes: function PartialEvaluator_hasBlendModes(resources) {
if (!isDict(resources)) {
return false;
}
var processed = Object.create(null);
if (resources.objId) {
processed[resources.objId] = true;
}
var nodes = [resources],
xref = this.xref;
while (nodes.length) {
var key, i, ii;
var node = nodes.shift();
var graphicStates = node.get('ExtGState');
if (isDict(graphicStates)) {
var graphicStatesKeys = graphicStates.getKeys();
for (i = 0, ii = graphicStatesKeys.length; i < ii; i++) {
key = graphicStatesKeys[i];
var graphicState = graphicStates.get(key);
var bm = graphicState.get('BM');
if (isName(bm) && bm.name !== 'Normal') {
return true;
}
}
}
var xObjects = node.get('XObject');
if (!isDict(xObjects)) {
continue;
}
var xObjectsKeys = xObjects.getKeys();
for (i = 0, ii = xObjectsKeys.length; i < ii; i++) {
key = xObjectsKeys[i];
var xObject = xObjects.getRaw(key);
if (isRef(xObject)) {
if (processed[xObject.toString()]) {
continue;
}
xObject = xref.fetch(xObject);
}
if (!isStream(xObject)) {
continue;
}
if (xObject.dict.objId) {
if (processed[xObject.dict.objId]) {
continue;
}
processed[xObject.dict.objId] = true;
}
var xResources = xObject.dict.get('Resources');
if (isDict(xResources) && (!xResources.objId || !processed[xResources.objId])) {
nodes.push(xResources);
if (xResources.objId) {
processed[xResources.objId] = true;
}
}
}
}
return false;
},
buildFormXObject: function PartialEvaluator_buildFormXObject(resources, xobj, smask, operatorList, task, initialState) {
var dict = xobj.dict;
var matrix = dict.getArray('Matrix');
var bbox = dict.getArray('BBox');
var group = dict.get('Group');
if (group) {
var groupOptions = {
matrix: matrix,
bbox: bbox,
smask: smask,
isolated: false,
knockout: false
};
var groupSubtype = group.get('S');
var colorSpace;
if (isName(groupSubtype, 'Transparency')) {
groupOptions.isolated = group.get('I') || false;
groupOptions.knockout = group.get('K') || false;
colorSpace = group.has('CS') ? ColorSpace.parse(group.get('CS'), this.xref, resources) : null;
}
if (smask && smask.backdrop) {
colorSpace = colorSpace || ColorSpace.singletons.rgb;
smask.backdrop = colorSpace.getRgb(smask.backdrop, 0);
}
operatorList.addOp(OPS.beginGroup, [groupOptions]);
}
operatorList.addOp(OPS.paintFormXObjectBegin, [matrix, bbox]);
return this.getOperatorList({
stream: xobj,
task: task,
resources: dict.get('Resources') || resources,
operatorList: operatorList,
initialState: initialState
}).then(function () {
operatorList.addOp(OPS.paintFormXObjectEnd, []);
if (group) {
operatorList.addOp(OPS.endGroup, [groupOptions]);
}
});
},
buildPaintImageXObject: function PartialEvaluator_buildPaintImageXObject(resources, image, inline, operatorList, cacheKey, imageCache) {
var _this2 = this;
var dict = image.dict;
var w = dict.get('Width', 'W');
var h = dict.get('Height', 'H');
if (!(w && isNum(w)) || !(h && isNum(h))) {
warn('Image dimensions are missing, or not numbers.');
return;
}
var maxImageSize = this.options.maxImageSize;
if (maxImageSize !== -1 && w * h > maxImageSize) {
warn('Image exceeded maximum allowed size and was removed.');
return;
}
var imageMask = dict.get('ImageMask', 'IM') || false;
var imgData, args;
if (imageMask) {
var width = dict.get('Width', 'W');
var height = dict.get('Height', 'H');
var bitStrideLength = width + 7 >> 3;
var imgArray = image.getBytes(bitStrideLength * height);
var decode = dict.getArray('Decode', 'D');
var inverseDecode = !!decode && decode[0] > 0;
imgData = PDFImage.createMask(imgArray, width, height, image instanceof DecodeStream, inverseDecode);
imgData.cached = true;
args = [imgData];
operatorList.addOp(OPS.paintImageMaskXObject, args);
if (cacheKey) {
imageCache[cacheKey] = {
fn: OPS.paintImageMaskXObject,
args: args
};
}
return;
}
var softMask = dict.get('SMask', 'SM') || false;
var mask = dict.get('Mask') || false;
var SMALL_IMAGE_DIMENSIONS = 200;
if (inline && !softMask && !mask && !(image instanceof JpegStream) && w + h < SMALL_IMAGE_DIMENSIONS) {
var imageObj = new PDFImage(this.xref, resources, image, inline, null, null);
imgData = imageObj.createImageData(true);
operatorList.addOp(OPS.paintInlineImageXObject, [imgData]);
return;
}
var nativeImageDecoderSupport = this.options.nativeImageDecoderSupport;
var objId = 'img_' + this.idFactory.createObjId();
operatorList.addDependency(objId);
args = [objId, w, h];
if (nativeImageDecoderSupport !== NativeImageDecoding.NONE && !softMask && !mask && image instanceof JpegStream && NativeImageDecoder.isSupported(image, this.xref, resources)) {
operatorList.addOp(OPS.paintJpegXObject, args);
this.handler.send('obj', [objId, this.pageIndex, 'JpegStream', image.getIR(this.options.forceDataSchema)]);
if (cacheKey) {
imageCache[cacheKey] = {
fn: OPS.paintJpegXObject,
args: args
};
}
return;
}
var nativeImageDecoder = null;
if (nativeImageDecoderSupport === NativeImageDecoding.DECODE && (image instanceof JpegStream || mask instanceof JpegStream || softMask instanceof JpegStream)) {
nativeImageDecoder = new NativeImageDecoder(this.xref, resources, this.handler, this.options.forceDataSchema);
}
PDFImage.buildImage(this.handler, this.xref, resources, image, inline, nativeImageDecoder).then(function (imageObj) {
var imgData = imageObj.createImageData(false);
_this2.handler.send('obj', [objId, _this2.pageIndex, 'Image', imgData], [imgData.data.buffer]);
}).catch(function (reason) {
warn('Unable to decode image: ' + reason);
_this2.handler.send('obj', [objId, _this2.pageIndex, 'Image', null]);
});
operatorList.addOp(OPS.paintImageXObject, args);
if (cacheKey) {
imageCache[cacheKey] = {
fn: OPS.paintImageXObject,
args: args
};
}
},
handleSMask: function PartialEvaluator_handleSmask(smask, resources, operatorList, task, stateManager) {
var smaskContent = smask.get('G');
var smaskOptions = {
subtype: smask.get('S').name,
backdrop: smask.get('BC')
};
var transferObj = smask.get('TR');
if (isPDFFunction(transferObj)) {
var transferFn = PDFFunction.parse(this.xref, transferObj);
var transferMap = new Uint8Array(256);
var tmp = new Float32Array(1);
for (var i = 0; i < 256; i++) {
tmp[0] = i / 255;
transferFn(tmp, 0, tmp, 0);
transferMap[i] = tmp[0] * 255 | 0;
}
smaskOptions.transferMap = transferMap;
}
return this.buildFormXObject(resources, smaskContent, smaskOptions, operatorList, task, stateManager.state.clone());
},
handleTilingType: function PartialEvaluator_handleTilingType(fn, args, resources, pattern, patternDict, operatorList, task) {
var tilingOpList = new OperatorList();
var resourcesArray = [patternDict.get('Resources'), resources];
var patternResources = Dict.merge(this.xref, resourcesArray);
return this.getOperatorList({
stream: pattern,
task: task,
resources: patternResources,
operatorList: tilingOpList
}).then(function () {
operatorList.addDependencies(tilingOpList.dependencies);
operatorList.addOp(fn, getTilingPatternIR({
fnArray: tilingOpList.fnArray,
argsArray: tilingOpList.argsArray
}, patternDict, args));
});
},
handleSetFont: function PartialEvaluator_handleSetFont(resources, fontArgs, fontRef, operatorList, task, state) {
var _this3 = this;
var fontName;
if (fontArgs) {
fontArgs = fontArgs.slice();
fontName = fontArgs[0].name;
}
return this.loadFont(fontName, fontRef, resources).then(function (translated) {
if (!translated.font.isType3Font) {
return translated;
}
return translated.loadType3Data(_this3, resources, operatorList, task).then(function () {
return translated;
}).catch(function (reason) {
_this3.handler.send('UnsupportedFeature', { featureId: UNSUPPORTED_FEATURES.font });
return new TranslatedFont('g_font_error', new ErrorFont('Type3 font load error: ' + reason), translated.font);
});
}).then(function (translated) {
state.font = translated.font;
translated.send(_this3.handler);
return translated.loadedName;
});
},
handleText: function PartialEvaluator_handleText(chars, state) {
var _this4 = this;
var font = state.font;
var glyphs = font.charsToGlyphs(chars);
var isAddToPathSet = !!(state.textRenderingMode & TextRenderingMode.ADD_TO_PATH_FLAG);
if (font.data && (isAddToPathSet || this.options.disableFontFace)) {
var buildPath = function buildPath(fontChar) {
if (!font.renderer.hasBuiltPath(fontChar)) {
var path = font.renderer.getPathJs(fontChar);
_this4.handler.send('commonobj', [font.loadedName + '_path_' + fontChar, 'FontPath', path]);
}
};
for (var i = 0, ii = glyphs.length; i < ii; i++) {
var glyph = glyphs[i];
buildPath(glyph.fontChar);
var accent = glyph.accent;
if (accent && accent.fontChar) {
buildPath(accent.fontChar);
}
}
}
return glyphs;
},
setGState: function PartialEvaluator_setGState(resources, gState, operatorList, task, stateManager) {
var _this5 = this;
var gStateObj = [];
var gStateKeys = gState.getKeys();
var promise = Promise.resolve();
var _loop = function _loop() {
var key = gStateKeys[i];
var value = gState.get(key);
switch (key) {
case 'Type':
break;
case 'LW':
case 'LC':
case 'LJ':
case 'ML':
case 'D':
case 'RI':
case 'FL':
case 'CA':
case 'ca':
gStateObj.push([key, value]);
break;
case 'Font':
promise = promise.then(function () {
return _this5.handleSetFont(resources, null, value[0], operatorList, task, stateManager.state).then(function (loadedName) {
operatorList.addDependency(loadedName);
gStateObj.push([key, [loadedName, value[1]]]);
});
});
break;
case 'BM':
gStateObj.push([key, normalizeBlendMode(value)]);
break;
case 'SMask':
if (isName(value, 'None')) {
gStateObj.push([key, false]);
break;
}
if (isDict(value)) {
promise = promise.then(function () {
return _this5.handleSMask(value, resources, operatorList, task, stateManager);
});
gStateObj.push([key, true]);
} else {
warn('Unsupported SMask type');
}
break;
case 'OP':
case 'op':
case 'OPM':
case 'BG':
case 'BG2':
case 'UCR':
case 'UCR2':
case 'TR':
case 'TR2':
case 'HT':
case 'SM':
case 'SA':
case 'AIS':
case 'TK':
info('graphic state operator ' + key);
break;
default:
info('Unknown graphic state operator ' + key);
break;
}
};
for (var i = 0, ii = gStateKeys.length; i < ii; i++) {
_loop();
}
return promise.then(function () {
if (gStateObj.length > 0) {
operatorList.addOp(OPS.setGState, [gStateObj]);
}
});
},
loadFont: function PartialEvaluator_loadFont(fontName, font, resources) {
var _this6 = this;
function errorFont() {
return Promise.resolve(new TranslatedFont('g_font_error', new ErrorFont('Font ' + fontName + ' is not available'), font));
}
var fontRef,
xref = this.xref;
if (font) {
assert(isRef(font));
fontRef = font;
} else {
var fontRes = resources.get('Font');
if (fontRes) {
fontRef = fontRes.getRaw(fontName);
} else {
warn('fontRes not available');
return errorFont();
}
}
if (!fontRef) {
warn('fontRef not available');
return errorFont();
}
if (this.fontCache.has(fontRef)) {
return this.fontCache.get(fontRef);
}
font = xref.fetchIfRef(fontRef);
if (!isDict(font)) {
return errorFont();
}
if (font.translated) {
return font.translated;
}
var fontCapability = createPromiseCapability();
var preEvaluatedFont = this.preEvaluateFont(font);
var descriptor = preEvaluatedFont.descriptor;
var fontRefIsRef = isRef(fontRef),
fontID;
if (fontRefIsRef) {
fontID = fontRef.toString();
}
if (isDict(descriptor)) {
if (!descriptor.fontAliases) {
descriptor.fontAliases = Object.create(null);
}
var fontAliases = descriptor.fontAliases;
var hash = preEvaluatedFont.hash;
if (fontAliases[hash]) {
var aliasFontRef = fontAliases[hash].aliasRef;
if (fontRefIsRef && aliasFontRef && this.fontCache.has(aliasFontRef)) {
this.fontCache.putAlias(fontRef, aliasFontRef);
return this.fontCache.get(fontRef);
}
} else {
fontAliases[hash] = { fontID: Font.getFontID() };
}
if (fontRefIsRef) {
fontAliases[hash].aliasRef = fontRef;
}
fontID = fontAliases[hash].fontID;
}
if (fontRefIsRef) {
this.fontCache.put(fontRef, fontCapability.promise);
} else {
if (!fontID) {
fontID = this.idFactory.createObjId();
}
this.fontCache.put('id_' + fontID, fontCapability.promise);
}
assert(fontID, 'The "fontID" must be defined.');
font.loadedName = 'g_' + this.pdfManager.docId + '_f' + fontID;
font.translated = fontCapability.promise;
var translatedPromise;
try {
translatedPromise = this.translateFont(preEvaluatedFont);
} catch (e) {
translatedPromise = Promise.reject(e);
}
translatedPromise.then(function (translatedFont) {
if (translatedFont.fontType !== undefined) {
var xrefFontStats = xref.stats.fontTypes;
xrefFontStats[translatedFont.fontType] = true;
}
fontCapability.resolve(new TranslatedFont(font.loadedName, translatedFont, font));
}).catch(function (reason) {
_this6.handler.send('UnsupportedFeature', { featureId: UNSUPPORTED_FEATURES.font });
try {
var descriptor = preEvaluatedFont.descriptor;
var fontFile3 = descriptor && descriptor.get('FontFile3');
var subtype = fontFile3 && fontFile3.get('Subtype');
var fontType = getFontType(preEvaluatedFont.type, subtype && subtype.name);
var xrefFontStats = xref.stats.fontTypes;
xrefFontStats[fontType] = true;
} catch (ex) {}
fontCapability.resolve(new TranslatedFont(font.loadedName, new ErrorFont(reason instanceof Error ? reason.message : reason), font));
});
return fontCapability.promise;
},
buildPath: function PartialEvaluator_buildPath(operatorList, fn, args) {
var lastIndex = operatorList.length - 1;
if (!args) {
args = [];
}
if (lastIndex < 0 || operatorList.fnArray[lastIndex] !== OPS.constructPath) {
operatorList.addOp(OPS.constructPath, [[fn], args]);
} else {
var opArgs = operatorList.argsArray[lastIndex];
opArgs[0].push(fn);
Array.prototype.push.apply(opArgs[1], args);
}
},
handleColorN: function PartialEvaluator_handleColorN(operatorList, fn, args, cs, patterns, resources, task) {
var patternName = args[args.length - 1];
var pattern;
if (isName(patternName) && (pattern = patterns.get(patternName.name))) {
var dict = isStream(pattern) ? pattern.dict : pattern;
var typeNum = dict.get('PatternType');
if (typeNum === TILING_PATTERN) {
var color = cs.base ? cs.base.getRgb(args, 0) : null;
return this.handleTilingType(fn, color, resources, pattern, dict, operatorList, task);
} else if (typeNum === SHADING_PATTERN) {
var shading = dict.get('Shading');
var matrix = dict.getArray('Matrix');
pattern = Pattern.parseShading(shading, matrix, this.xref, resources, this.handler);
operatorList.addOp(fn, pattern.getIR());
return Promise.resolve();
}
return Promise.reject(new Error('Unknown PatternType: ' + typeNum));
}
operatorList.addOp(fn, args);
return Promise.resolve();
},
getOperatorList: function getOperatorList(_ref2) {
var _this7 = this;
var stream = _ref2.stream,
task = _ref2.task,
resources = _ref2.resources,
operatorList = _ref2.operatorList,
_ref2$initialState = _ref2.initialState,
initialState = _ref2$initialState === undefined ? null : _ref2$initialState;
resources = resources || Dict.empty;
initialState = initialState || new EvalState();
assert(operatorList, 'getOperatorList: missing "operatorList" parameter');
var self = this;
var xref = this.xref;
var imageCache = Object.create(null);
var xobjs = resources.get('XObject') || Dict.empty;
var patterns = resources.get('Pattern') || Dict.empty;
var stateManager = new StateManager(initialState);
var preprocessor = new EvaluatorPreprocessor(stream, xref, stateManager);
var timeSlotManager = new TimeSlotManager();
function closePendingRestoreOPS(argument) {
for (var i = 0, ii = preprocessor.savedStatesDepth; i < ii; i++) {
operatorList.addOp(OPS.restore, []);
}
}
return new Promise(function promiseBody(resolve, reject) {
var next = function next(promise) {
promise.then(function () {
try {
promiseBody(resolve, reject);
} catch (ex) {
reject(ex);
}
}, reject);
};
task.ensureNotTerminated();
timeSlotManager.reset();
var stop,
operation = {},
i,
ii,
cs;
while (!(stop = timeSlotManager.check())) {
operation.args = null;
if (!preprocessor.read(operation)) {
break;
}
var args = operation.args;
var fn = operation.fn;
switch (fn | 0) {
case OPS.paintXObject:
if (args[0].code) {
break;
}
var name = args[0].name;
if (!name) {
warn('XObject must be referred to by name.');
continue;
}
if (imageCache[name] !== undefined) {
operatorList.addOp(imageCache[name].fn, imageCache[name].args);
args = null;
continue;
}
var xobj = xobjs.get(name);
if (xobj) {
assert(isStream(xobj), 'XObject should be a stream');
var type = xobj.dict.get('Subtype');
assert(isName(type), 'XObject should have a Name subtype');
if (type.name === 'Form') {
stateManager.save();
next(self.buildFormXObject(resources, xobj, null, operatorList, task, stateManager.state.clone()).then(function () {
stateManager.restore();
}));
return;
} else if (type.name === 'Image') {
self.buildPaintImageXObject(resources, xobj, false, operatorList, name, imageCache);
args = null;
continue;
} else if (type.name === 'PS') {
info('Ignored XObject subtype PS');
continue;
} else {
error('Unhandled XObject subtype ' + type.name);
}
}
break;
case OPS.setFont:
var fontSize = args[1];
next(self.handleSetFont(resources, args, null, operatorList, task, stateManager.state).then(function (loadedName) {
operatorList.addDependency(loadedName);
operatorList.addOp(OPS.setFont, [loadedName, fontSize]);
}));
return;
case OPS.endInlineImage:
var cacheKey = args[0].cacheKey;
if (cacheKey) {
var cacheEntry = imageCache[cacheKey];
if (cacheEntry !== undefined) {
operatorList.addOp(cacheEntry.fn, cacheEntry.args);
args = null;
continue;
}
}
self.buildPaintImageXObject(resources, args[0], true, operatorList, cacheKey, imageCache);
args = null;
continue;
case OPS.showText:
args[0] = self.handleText(args[0], stateManager.state);
break;
case OPS.showSpacedText:
var arr = args[0];
var combinedGlyphs = [];
var arrLength = arr.length;
var state = stateManager.state;
for (i = 0; i < arrLength; ++i) {
var arrItem = arr[i];
if (isString(arrItem)) {
Array.prototype.push.apply(combinedGlyphs, self.handleText(arrItem, state));
} else if (isNum(arrItem)) {
combinedGlyphs.push(arrItem);
}
}
args[0] = combinedGlyphs;
fn = OPS.showText;
break;
case OPS.nextLineShowText:
operatorList.addOp(OPS.nextLine);
args[0] = self.handleText(args[0], stateManager.state);
fn = OPS.showText;
break;
case OPS.nextLineSetSpacingShowText:
operatorList.addOp(OPS.nextLine);
operatorList.addOp(OPS.setWordSpacing, [args.shift()]);
operatorList.addOp(OPS.setCharSpacing, [args.shift()]);
args[0] = self.handleText(args[0], stateManager.state);
fn = OPS.showText;
break;
case OPS.setTextRenderingMode:
stateManager.state.textRenderingMode = args[0];
break;
case OPS.setFillColorSpace:
stateManager.state.fillColorSpace = ColorSpace.parse(args[0], xref, resources);
continue;
case OPS.setStrokeColorSpace:
stateManager.state.strokeColorSpace = ColorSpace.parse(args[0], xref, resources);
continue;
case OPS.setFillColor:
cs = stateManager.state.fillColorSpace;
args = cs.getRgb(args, 0);
fn = OPS.setFillRGBColor;
break;
case OPS.setStrokeColor:
cs = stateManager.state.strokeColorSpace;
args = cs.getRgb(args, 0);
fn = OPS.setStrokeRGBColor;
break;
case OPS.setFillGray:
stateManager.state.fillColorSpace = ColorSpace.singletons.gray;
args = ColorSpace.singletons.gray.getRgb(args, 0);
fn = OPS.setFillRGBColor;
break;
case OPS.setStrokeGray:
stateManager.state.strokeColorSpace = ColorSpace.singletons.gray;
args = ColorSpace.singletons.gray.getRgb(args, 0);
fn = OPS.setStrokeRGBColor;
break;
case OPS.setFillCMYKColor:
stateManager.state.fillColorSpace = ColorSpace.singletons.cmyk;
args = ColorSpace.singletons.cmyk.getRgb(args, 0);
fn = OPS.setFillRGBColor;
break;
case OPS.setStrokeCMYKColor:
stateManager.state.strokeColorSpace = ColorSpace.singletons.cmyk;
args = ColorSpace.singletons.cmyk.getRgb(args, 0);
fn = OPS.setStrokeRGBColor;
break;
case OPS.setFillRGBColor:
stateManager.state.fillColorSpace = ColorSpace.singletons.rgb;
args = ColorSpace.singletons.rgb.getRgb(args, 0);
break;
case OPS.setStrokeRGBColor:
stateManager.state.strokeColorSpace = ColorSpace.singletons.rgb;
args = ColorSpace.singletons.rgb.getRgb(args, 0);
break;
case OPS.setFillColorN:
cs = stateManager.state.fillColorSpace;
if (cs.name === 'Pattern') {
next(self.handleColorN(operatorList, OPS.setFillColorN, args, cs, patterns, resources, task));
return;
}
args = cs.getRgb(args, 0);
fn = OPS.setFillRGBColor;
break;
case OPS.setStrokeColorN:
cs = stateManager.state.strokeColorSpace;
if (cs.name === 'Pattern') {
next(self.handleColorN(operatorList, OPS.setStrokeColorN, args, cs, patterns, resources, task));
return;
}
args = cs.getRgb(args, 0);
fn = OPS.setStrokeRGBColor;
break;
case OPS.shadingFill:
var shadingRes = resources.get('Shading');
assert(shadingRes, 'No shading resource found');
var shading = shadingRes.get(args[0].name);
assert(shading, 'No shading object found');
var shadingFill = Pattern.parseShading(shading, null, xref, resources, self.handler);
var patternIR = shadingFill.getIR();
args = [patternIR];
fn = OPS.shadingFill;
break;
case OPS.setGState:
var dictName = args[0];
var extGState = resources.get('ExtGState');
if (!isDict(extGState) || !extGState.has(dictName.name)) {
break;
}
var gState = extGState.get(dictName.name);
next(self.setGState(resources, gState, operatorList, task, stateManager));
return;
case OPS.moveTo:
case OPS.lineTo:
case OPS.curveTo:
case OPS.curveTo2:
case OPS.curveTo3:
case OPS.closePath:
self.buildPath(operatorList, fn, args);
continue;
case OPS.rectangle:
self.buildPath(operatorList, fn, args);
continue;
case OPS.markPoint:
case OPS.markPointProps:
case OPS.beginMarkedContent:
case OPS.beginMarkedContentProps:
case OPS.endMarkedContent:
case OPS.beginCompat:
case OPS.endCompat:
continue;
default:
if (args !== null) {
for (i = 0, ii = args.length; i < ii; i++) {
if (args[i] instanceof Dict) {
break;
}
}
if (i < ii) {
warn('getOperatorList - ignoring operator: ' + fn);
continue;
}
}
}
operatorList.addOp(fn, args);
}
if (stop) {
next(deferred);
return;
}
closePendingRestoreOPS();
resolve();
}).catch(function (reason) {
if (_this7.options.ignoreErrors) {
_this7.handler.send('UnsupportedFeature', { featureId: UNSUPPORTED_FEATURES.unknown });
warn('getOperatorList - ignoring errors during task: ' + task.name);
closePendingRestoreOPS();
return;
}
throw reason;
});
},
getTextContent: function getTextContent(_ref3) {
var _this8 = this;
var stream = _ref3.stream,
task = _ref3.task,
resources = _ref3.resources,
_ref3$stateManager = _ref3.stateManager,
stateManager = _ref3$stateManager === undefined ? null : _ref3$stateManager,
_ref3$normalizeWhites = _ref3.normalizeWhitespace,
normalizeWhitespace = _ref3$normalizeWhites === undefined ? false : _ref3$normalizeWhites,
_ref3$combineTextItem = _ref3.combineTextItems,
combineTextItems = _ref3$combineTextItem === undefined ? false : _ref3$combineTextItem;
resources = resources || Dict.empty;
stateManager = stateManager || new StateManager(new TextState());
var WhitespaceRegexp = /\s/g;
var textContent = {
items: [],
styles: Object.create(null)
};
var textContentItem = {
initialized: false,
str: [],
width: 0,
height: 0,
vertical: false,
lastAdvanceWidth: 0,
lastAdvanceHeight: 0,
textAdvanceScale: 0,
spaceWidth: 0,
fakeSpaceMin: Infinity,
fakeMultiSpaceMin: Infinity,
fakeMultiSpaceMax: -0,
textRunBreakAllowed: false,
transform: null,
fontName: null
};
var SPACE_FACTOR = 0.3;
var MULTI_SPACE_FACTOR = 1.5;
var MULTI_SPACE_FACTOR_MAX = 4;
var self = this;
var xref = this.xref;
var xobjs = null;
var xobjsCache = Object.create(null);
var preprocessor = new EvaluatorPreprocessor(stream, xref, stateManager);
var textState;
function ensureTextContentItem() {
if (textContentItem.initialized) {
return textContentItem;
}
var font = textState.font;
if (!(font.loadedName in textContent.styles)) {
textContent.styles[font.loadedName] = {
fontFamily: font.fallbackName,
ascent: font.ascent,
descent: font.descent,
vertical: font.vertical
};
}
textContentItem.fontName = font.loadedName;
var tsm = [textState.fontSize * textState.textHScale, 0, 0, textState.fontSize, 0, textState.textRise];
if (font.isType3Font && textState.fontMatrix !== FONT_IDENTITY_MATRIX && textState.fontSize === 1) {
var glyphHeight = font.bbox[3] - font.bbox[1];
if (glyphHeight > 0) {
glyphHeight = glyphHeight * textState.fontMatrix[3];
tsm[3] *= glyphHeight;
}
}
var trm = Util.transform(textState.ctm, Util.transform(textState.textMatrix, tsm));
textContentItem.transform = trm;
if (!font.vertical) {
textContentItem.width = 0;
textContentItem.height = Math.sqrt(trm[2] * trm[2] + trm[3] * trm[3]);
textContentItem.vertical = false;
} else {
textContentItem.width = Math.sqrt(trm[0] * trm[0] + trm[1] * trm[1]);
textContentItem.height = 0;
textContentItem.vertical = true;
}
var a = textState.textLineMatrix[0];
var b = textState.textLineMatrix[1];
var scaleLineX = Math.sqrt(a * a + b * b);
a = textState.ctm[0];
b = textState.ctm[1];
var scaleCtmX = Math.sqrt(a * a + b * b);
textContentItem.textAdvanceScale = scaleCtmX * scaleLineX;
textContentItem.lastAdvanceWidth = 0;
textContentItem.lastAdvanceHeight = 0;
var spaceWidth = font.spaceWidth / 1000 * textState.fontSize;
if (spaceWidth) {
textContentItem.spaceWidth = spaceWidth;
textContentItem.fakeSpaceMin = spaceWidth * SPACE_FACTOR;
textContentItem.fakeMultiSpaceMin = spaceWidth * MULTI_SPACE_FACTOR;
textContentItem.fakeMultiSpaceMax = spaceWidth * MULTI_SPACE_FACTOR_MAX;
textContentItem.textRunBreakAllowed = !font.isMonospace;
} else {
textContentItem.spaceWidth = 0;
textContentItem.fakeSpaceMin = Infinity;
textContentItem.fakeMultiSpaceMin = Infinity;
textContentItem.fakeMultiSpaceMax = 0;
textContentItem.textRunBreakAllowed = false;
}
textContentItem.initialized = true;
return textContentItem;
}
function replaceWhitespace(str) {
var i = 0,
ii = str.length,
code;
while (i < ii && (code = str.charCodeAt(i)) >= 0x20 && code <= 0x7F) {
i++;
}
return i < ii ? str.replace(WhitespaceRegexp, ' ') : str;
}
function runBidiTransform(textChunk) {
var str = textChunk.str.join('');
var bidiResult = bidi(str, -1, textChunk.vertical);
return {
str: normalizeWhitespace ? replaceWhitespace(bidiResult.str) : bidiResult.str,
dir: bidiResult.dir,
width: textChunk.width,
height: textChunk.height,
transform: textChunk.transform,
fontName: textChunk.fontName
};
}
function handleSetFont(fontName, fontRef) {
return self.loadFont(fontName, fontRef, resources).then(function (translated) {
textState.font = translated.font;
textState.fontMatrix = translated.font.fontMatrix || FONT_IDENTITY_MATRIX;
});
}
function buildTextContentItem(chars) {
var font = textState.font;
var textChunk = ensureTextContentItem();
var width = 0;
var height = 0;
var glyphs = font.charsToGlyphs(chars);
for (var i = 0; i < glyphs.length; i++) {
var glyph = glyphs[i];
var glyphWidth = null;
if (font.vertical && glyph.vmetric) {
glyphWidth = glyph.vmetric[0];
} else {
glyphWidth = glyph.width;
}
var glyphUnicode = glyph.unicode;
var NormalizedUnicodes = getNormalizedUnicodes();
if (NormalizedUnicodes[glyphUnicode] !== undefined) {
glyphUnicode = NormalizedUnicodes[glyphUnicode];
}
glyphUnicode = reverseIfRtl(glyphUnicode);
var charSpacing = textState.charSpacing;
if (glyph.isSpace) {
var wordSpacing = textState.wordSpacing;
charSpacing += wordSpacing;
if (wordSpacing > 0) {
addFakeSpaces(wordSpacing, textChunk.str);
}
}
var tx = 0;
var ty = 0;
if (!font.vertical) {
var w0 = glyphWidth * textState.fontMatrix[0];
tx = (w0 * textState.fontSize + charSpacing) * textState.textHScale;
width += tx;
} else {
var w1 = glyphWidth * textState.fontMatrix[0];
ty = w1 * textState.fontSize + charSpacing;
height += ty;
}
textState.translateTextMatrix(tx, ty);
textChunk.str.push(glyphUnicode);
}
if (!font.vertical) {
textChunk.lastAdvanceWidth = width;
textChunk.width += width;
} else {
textChunk.lastAdvanceHeight = height;
textChunk.height += Math.abs(height);
}
return textChunk;
}
function addFakeSpaces(width, strBuf) {
if (width < textContentItem.fakeSpaceMin) {
return;
}
if (width < textContentItem.fakeMultiSpaceMin) {
strBuf.push(' ');
return;
}
var fakeSpaces = Math.round(width / textContentItem.spaceWidth);
while (fakeSpaces-- > 0) {
strBuf.push(' ');
}
}
function flushTextContentItem() {
if (!textContentItem.initialized) {
return;
}
textContentItem.width *= textContentItem.textAdvanceScale;
textContentItem.height *= textContentItem.textAdvanceScale;
textContent.items.push(runBidiTransform(textContentItem));
textContentItem.initialized = false;
textContentItem.str.length = 0;
}
var timeSlotManager = new TimeSlotManager();
return new Promise(function promiseBody(resolve, reject) {
var next = function next(promise) {
promise.then(function () {
try {
promiseBody(resolve, reject);
} catch (ex) {
reject(ex);
}
}, reject);
};
task.ensureNotTerminated();
timeSlotManager.reset();
var stop,
operation = {},
args = [];
while (!(stop = timeSlotManager.check())) {
args.length = 0;
operation.args = args;
if (!preprocessor.read(operation)) {
break;
}
textState = stateManager.state;
var fn = operation.fn;
args = operation.args;
var advance, diff;
switch (fn | 0) {
case OPS.setFont:
var fontNameArg = args[0].name,
fontSizeArg = args[1];
if (textState.font && fontNameArg === textState.fontName && fontSizeArg === textState.fontSize) {
break;
}
flushTextContentItem();
textState.fontName = fontNameArg;
textState.fontSize = fontSizeArg;
next(handleSetFont(fontNameArg, null));
return;
case OPS.setTextRise:
flushTextContentItem();
textState.textRise = args[0];
break;
case OPS.setHScale:
flushTextContentItem();
textState.textHScale = args[0] / 100;
break;
case OPS.setLeading:
flushTextContentItem();
textState.leading = args[0];
break;
case OPS.moveText:
var isSameTextLine = !textState.font ? false : (textState.font.vertical ? args[0] : args[1]) === 0;
advance = args[0] - args[1];
if (combineTextItems && isSameTextLine && textContentItem.initialized && advance > 0 && advance <= textContentItem.fakeMultiSpaceMax) {
textState.translateTextLineMatrix(args[0], args[1]);
textContentItem.width += args[0] - textContentItem.lastAdvanceWidth;
textContentItem.height += args[1] - textContentItem.lastAdvanceHeight;
diff = args[0] - textContentItem.lastAdvanceWidth - (args[1] - textContentItem.lastAdvanceHeight);
addFakeSpaces(diff, textContentItem.str);
break;
}
flushTextContentItem();
textState.translateTextLineMatrix(args[0], args[1]);
textState.textMatrix = textState.textLineMatrix.slice();
break;
case OPS.setLeadingMoveText:
flushTextContentItem();
textState.leading = -args[1];
textState.translateTextLineMatrix(args[0], args[1]);
textState.textMatrix = textState.textLineMatrix.slice();
break;
case OPS.nextLine:
flushTextContentItem();
textState.carriageReturn();
break;
case OPS.setTextMatrix:
advance = textState.calcTextLineMatrixAdvance(args[0], args[1], args[2], args[3], args[4], args[5]);
if (combineTextItems && advance !== null && textContentItem.initialized && advance.value > 0 && advance.value <= textContentItem.fakeMultiSpaceMax) {
textState.translateTextLineMatrix(advance.width, advance.height);
textContentItem.width += advance.width - textContentItem.lastAdvanceWidth;
textContentItem.height += advance.height - textContentItem.lastAdvanceHeight;
diff = advance.width - textContentItem.lastAdvanceWidth - (advance.height - textContentItem.lastAdvanceHeight);
addFakeSpaces(diff, textContentItem.str);
break;
}
flushTextContentItem();
textState.setTextMatrix(args[0], args[1], args[2], args[3], args[4], args[5]);
textState.setTextLineMatrix(args[0], args[1], args[2], args[3], args[4], args[5]);
break;
case OPS.setCharSpacing:
textState.charSpacing = args[0];
break;
case OPS.setWordSpacing:
textState.wordSpacing = args[0];
break;
case OPS.beginText:
flushTextContentItem();
textState.textMatrix = IDENTITY_MATRIX.slice();
textState.textLineMatrix = IDENTITY_MATRIX.slice();
break;
case OPS.showSpacedText:
var items = args[0];
var offset;
for (var j = 0, jj = items.length; j < jj; j++) {
if (typeof items[j] === 'string') {
buildTextContentItem(items[j]);
} else if (isNum(items[j])) {
ensureTextContentItem();
advance = items[j] * textState.fontSize / 1000;
var breakTextRun = false;
if (textState.font.vertical) {
offset = advance;
textState.translateTextMatrix(0, offset);
breakTextRun = textContentItem.textRunBreakAllowed && advance > textContentItem.fakeMultiSpaceMax;
if (!breakTextRun) {
textContentItem.height += offset;
}
} else {
advance = -advance;
offset = advance * textState.textHScale;
textState.translateTextMatrix(offset, 0);
breakTextRun = textContentItem.textRunBreakAllowed && advance > textContentItem.fakeMultiSpaceMax;
if (!breakTextRun) {
textContentItem.width += offset;
}
}
if (breakTextRun) {
flushTextContentItem();
} else if (advance > 0) {
addFakeSpaces(advance, textContentItem.str);
}
}
}
break;
case OPS.showText:
buildTextContentItem(args[0]);
break;
case OPS.nextLineShowText:
flushTextContentItem();
textState.carriageReturn();
buildTextContentItem(args[0]);
break;
case OPS.nextLineSetSpacingShowText:
flushTextContentItem();
textState.wordSpacing = args[0];
textState.charSpacing = args[1];
textState.carriageReturn();
buildTextContentItem(args[2]);
break;
case OPS.paintXObject:
flushTextContentItem();
if (args[0].code) {
break;
}
if (!xobjs) {
xobjs = resources.get('XObject') || Dict.empty;
}
var name = args[0].name;
if (xobjsCache.key === name) {
if (xobjsCache.texts) {
Util.appendToArray(textContent.items, xobjsCache.texts.items);
Util.extendObj(textContent.styles, xobjsCache.texts.styles);
}
break;
}
var xobj = xobjs.get(name);
if (!xobj) {
break;
}
assert(isStream(xobj), 'XObject should be a stream');
var type = xobj.dict.get('Subtype');
assert(isName(type), 'XObject should have a Name subtype');
if (type.name !== 'Form') {
xobjsCache.key = name;
xobjsCache.texts = null;
break;
}
var currentState = stateManager.state.clone();
var xObjStateManager = new StateManager(currentState);
var matrix = xobj.dict.getArray('Matrix');
if (isArray(matrix) && matrix.length === 6) {
xObjStateManager.transform(matrix);
}
next(self.getTextContent({
stream: xobj,
task: task,
resources: xobj.dict.get('Resources') || resources,
stateManager: xObjStateManager,
normalizeWhitespace: normalizeWhitespace,
combineTextItems: combineTextItems
}).then(function (formTextContent) {
Util.appendToArray(textContent.items, formTextContent.items);
Util.extendObj(textContent.styles, formTextContent.styles);
xobjsCache.key = name;
xobjsCache.texts = formTextContent;
}));
return;
case OPS.setGState:
flushTextContentItem();
var dictName = args[0];
var extGState = resources.get('ExtGState');
if (!isDict(extGState) || !isName(dictName)) {
break;
}
var gState = extGState.get(dictName.name);
if (!isDict(gState)) {
break;
}
var gStateFont = gState.get('Font');
if (gStateFont) {
textState.fontName = null;
textState.fontSize = gStateFont[1];
next(handleSetFont(null, gStateFont[0]));
return;
}
break;
}
}
if (stop) {
next(deferred);
return;
}
flushTextContentItem();
resolve(textContent);
}).catch(function (reason) {
if (_this8.options.ignoreErrors) {
warn('getTextContent - ignoring errors during task: ' + task.name);
flushTextContentItem();
return textContent;
}
throw reason;
});
},
extractDataStructures: function PartialEvaluator_extractDataStructures(dict, baseDict, properties) {
var _this9 = this;
var xref = this.xref;
var toUnicode = dict.get('ToUnicode') || baseDict.get('ToUnicode');
var toUnicodePromise = toUnicode ? this.readToUnicode(toUnicode) : Promise.resolve(undefined);
if (properties.composite) {
var cidSystemInfo = dict.get('CIDSystemInfo');
if (isDict(cidSystemInfo)) {
properties.cidSystemInfo = {
registry: cidSystemInfo.get('Registry'),
ordering: cidSystemInfo.get('Ordering'),
supplement: cidSystemInfo.get('Supplement')
};
}
var cidToGidMap = dict.get('CIDToGIDMap');
if (isStream(cidToGidMap)) {
properties.cidToGidMap = this.readCidToGidMap(cidToGidMap);
}
}
var differences = [];
var baseEncodingName = null;
var encoding;
if (dict.has('Encoding')) {
encoding = dict.get('Encoding');
if (isDict(encoding)) {
baseEncodingName = encoding.get('BaseEncoding');
baseEncodingName = isName(baseEncodingName) ? baseEncodingName.name : null;
if (encoding.has('Differences')) {
var diffEncoding = encoding.get('Differences');
var index = 0;
for (var j = 0, jj = diffEncoding.length; j < jj; j++) {
var data = xref.fetchIfRef(diffEncoding[j]);
if (isNum(data)) {
index = data;
} else if (isName(data)) {
differences[index++] = data.name;
} else {
error('Invalid entry in \'Differences\' array: ' + data);
}
}
}
} else if (isName(encoding)) {
baseEncodingName = encoding.name;
} else {
error('Encoding is not a Name nor a Dict');
}
if (baseEncodingName !== 'MacRomanEncoding' && baseEncodingName !== 'MacExpertEncoding' && baseEncodingName !== 'WinAnsiEncoding') {
baseEncodingName = null;
}
}
if (baseEncodingName) {
properties.defaultEncoding = getEncoding(baseEncodingName).slice();
} else {
var isSymbolicFont = !!(properties.flags & FontFlags.Symbolic);
var isNonsymbolicFont = !!(properties.flags & FontFlags.Nonsymbolic);
encoding = StandardEncoding;
if (properties.type === 'TrueType' && !isNonsymbolicFont) {
encoding = WinAnsiEncoding;
}
if (isSymbolicFont) {
encoding = MacRomanEncoding;
if (!properties.file) {
if (/Symbol/i.test(properties.name)) {
encoding = SymbolSetEncoding;
} else if (/Dingbats/i.test(properties.name)) {
encoding = ZapfDingbatsEncoding;
}
}
}
properties.defaultEncoding = encoding;
}
properties.differences = differences;
properties.baseEncodingName = baseEncodingName;
properties.hasEncoding = !!baseEncodingName || differences.length > 0;
properties.dict = dict;
return toUnicodePromise.then(function (toUnicode) {
properties.toUnicode = toUnicode;
return _this9.buildToUnicode(properties);
}).then(function (toUnicode) {
properties.toUnicode = toUnicode;
return properties;
});
},
buildToUnicode: function PartialEvaluator_buildToUnicode(properties) {
properties.hasIncludedToUnicodeMap = !!properties.toUnicode && properties.toUnicode.length > 0;
if (properties.hasIncludedToUnicodeMap) {
return Promise.resolve(properties.toUnicode);
}
var toUnicode, charcode, glyphName;
if (!properties.composite) {
toUnicode = [];
var encoding = properties.defaultEncoding.slice();
var baseEncodingName = properties.baseEncodingName;
var differences = properties.differences;
for (charcode in differences) {
glyphName = differences[charcode];
if (glyphName === '.notdef') {
continue;
}
encoding[charcode] = glyphName;
}
var glyphsUnicodeMap = getGlyphsUnicode();
for (charcode in encoding) {
glyphName = encoding[charcode];
if (glyphName === '') {
continue;
} else if (glyphsUnicodeMap[glyphName] === undefined) {
var code = 0;
switch (glyphName[0]) {
case 'G':
if (glyphName.length === 3) {
code = parseInt(glyphName.substr(1), 16);
}
break;
case 'g':
if (glyphName.length === 5) {
code = parseInt(glyphName.substr(1), 16);
}
break;
case 'C':
case 'c':
if (glyphName.length >= 3) {
code = +glyphName.substr(1);
}
break;
default:
var unicode = getUnicodeForGlyph(glyphName, glyphsUnicodeMap);
if (unicode !== -1) {
code = unicode;
}
}
if (code) {
if (baseEncodingName && code === +charcode) {
var baseEncoding = getEncoding(baseEncodingName);
if (baseEncoding && (glyphName = baseEncoding[charcode])) {
toUnicode[charcode] = String.fromCharCode(glyphsUnicodeMap[glyphName]);
continue;
}
}
toUnicode[charcode] = String.fromCharCode(code);
}
continue;
}
toUnicode[charcode] = String.fromCharCode(glyphsUnicodeMap[glyphName]);
}
return Promise.resolve(new ToUnicodeMap(toUnicode));
}
if (properties.composite && (properties.cMap.builtInCMap && !(properties.cMap instanceof IdentityCMap) || properties.cidSystemInfo.registry === 'Adobe' && (properties.cidSystemInfo.ordering === 'GB1' || properties.cidSystemInfo.ordering === 'CNS1' || properties.cidSystemInfo.ordering === 'Japan1' || properties.cidSystemInfo.ordering === 'Korea1'))) {
var registry = properties.cidSystemInfo.registry;
var ordering = properties.cidSystemInfo.ordering;
var ucs2CMapName = Name.get(registry + '-' + ordering + '-UCS2');
return CMapFactory.create({
encoding: ucs2CMapName,
fetchBuiltInCMap: this.fetchBuiltInCMap,
useCMap: null
}).then(function (ucs2CMap) {
var cMap = properties.cMap;
toUnicode = [];
cMap.forEach(function (charcode, cid) {
assert(cid <= 0xffff, 'Max size of CID is 65,535');
var ucs2 = ucs2CMap.lookup(cid);
if (ucs2) {
toUnicode[charcode] = String.fromCharCode((ucs2.charCodeAt(0) << 8) + ucs2.charCodeAt(1));
}
});
return new ToUnicodeMap(toUnicode);
});
}
return Promise.resolve(new IdentityToUnicodeMap(properties.firstChar, properties.lastChar));
},
readToUnicode: function PartialEvaluator_readToUnicode(toUnicode) {
var cmapObj = toUnicode;
if (isName(cmapObj)) {
return CMapFactory.create({
encoding: cmapObj,
fetchBuiltInCMap: this.fetchBuiltInCMap,
useCMap: null
}).then(function (cmap) {
if (cmap instanceof IdentityCMap) {
return new IdentityToUnicodeMap(0, 0xFFFF);
}
return new ToUnicodeMap(cmap.getMap());
});
} else if (isStream(cmapObj)) {
return CMapFactory.create({
encoding: cmapObj,
fetchBuiltInCMap: this.fetchBuiltInCMap,
useCMap: null
}).then(function (cmap) {
if (cmap instanceof IdentityCMap) {
return new IdentityToUnicodeMap(0, 0xFFFF);
}
var map = new Array(cmap.length);
cmap.forEach(function (charCode, token) {
var str = [];
for (var k = 0; k < token.length; k += 2) {
var w1 = token.charCodeAt(k) << 8 | token.charCodeAt(k + 1);
if ((w1 & 0xF800) !== 0xD800) {
str.push(w1);
continue;
}
k += 2;
var w2 = token.charCodeAt(k) << 8 | token.charCodeAt(k + 1);
str.push(((w1 & 0x3ff) << 10) + (w2 & 0x3ff) + 0x10000);
}
map[charCode] = String.fromCharCode.apply(String, str);
});
return new ToUnicodeMap(map);
});
}
return Promise.resolve(null);
},
readCidToGidMap: function PartialEvaluator_readCidToGidMap(cidToGidStream) {
var glyphsData = cidToGidStream.getBytes();
var result = [];
for (var j = 0, jj = glyphsData.length; j < jj; j++) {
var glyphID = glyphsData[j++] << 8 | glyphsData[j];
if (glyphID === 0) {
continue;
}
var code = j >> 1;
result[code] = glyphID;
}
return result;
},
extractWidths: function PartialEvaluator_extractWidths(dict, descriptor, properties) {
var xref = this.xref;
var glyphsWidths = [];
var defaultWidth = 0;
var glyphsVMetrics = [];
var defaultVMetrics;
var i, ii, j, jj, start, code, widths;
if (properties.composite) {
defaultWidth = dict.get('DW') || 1000;
widths = dict.get('W');
if (widths) {
for (i = 0, ii = widths.length; i < ii; i++) {
start = xref.fetchIfRef(widths[i++]);
code = xref.fetchIfRef(widths[i]);
if (isArray(code)) {
for (j = 0, jj = code.length; j < jj; j++) {
glyphsWidths[start++] = xref.fetchIfRef(code[j]);
}
} else {
var width = xref.fetchIfRef(widths[++i]);
for (j = start; j <= code; j++) {
glyphsWidths[j] = width;
}
}
}
}
if (properties.vertical) {
var vmetrics = dict.getArray('DW2') || [880, -1000];
defaultVMetrics = [vmetrics[1], defaultWidth * 0.5, vmetrics[0]];
vmetrics = dict.get('W2');
if (vmetrics) {
for (i = 0, ii = vmetrics.length; i < ii; i++) {
start = xref.fetchIfRef(vmetrics[i++]);
code = xref.fetchIfRef(vmetrics[i]);
if (isArray(code)) {
for (j = 0, jj = code.length; j < jj; j++) {
glyphsVMetrics[start++] = [xref.fetchIfRef(code[j++]), xref.fetchIfRef(code[j++]), xref.fetchIfRef(code[j])];
}
} else {
var vmetric = [xref.fetchIfRef(vmetrics[++i]), xref.fetchIfRef(vmetrics[++i]), xref.fetchIfRef(vmetrics[++i])];
for (j = start; j <= code; j++) {
glyphsVMetrics[j] = vmetric;
}
}
}
}
}
} else {
var firstChar = properties.firstChar;
widths = dict.get('Widths');
if (widths) {
j = firstChar;
for (i = 0, ii = widths.length; i < ii; i++) {
glyphsWidths[j++] = xref.fetchIfRef(widths[i]);
}
defaultWidth = parseFloat(descriptor.get('MissingWidth')) || 0;
} else {
var baseFontName = dict.get('BaseFont');
if (isName(baseFontName)) {
var metrics = this.getBaseFontMetrics(baseFontName.name);
glyphsWidths = this.buildCharCodeToWidth(metrics.widths, properties);
defaultWidth = metrics.defaultWidth;
}
}
}
var isMonospace = true;
var firstWidth = defaultWidth;
for (var glyph in glyphsWidths) {
var glyphWidth = glyphsWidths[glyph];
if (!glyphWidth) {
continue;
}
if (!firstWidth) {
firstWidth = glyphWidth;
continue;
}
if (firstWidth !== glyphWidth) {
isMonospace = false;
break;
}
}
if (isMonospace) {
properties.flags |= FontFlags.FixedPitch;
}
properties.defaultWidth = defaultWidth;
properties.widths = glyphsWidths;
properties.defaultVMetrics = defaultVMetrics;
properties.vmetrics = glyphsVMetrics;
},
isSerifFont: function PartialEvaluator_isSerifFont(baseFontName) {
var fontNameWoStyle = baseFontName.split('-')[0];
return fontNameWoStyle in getSerifFonts() || fontNameWoStyle.search(/serif/gi) !== -1;
},
getBaseFontMetrics: function PartialEvaluator_getBaseFontMetrics(name) {
var defaultWidth = 0;
var widths = [];
var monospace = false;
var stdFontMap = getStdFontMap();
var lookupName = stdFontMap[name] || name;
var Metrics = getMetrics();
if (!(lookupName in Metrics)) {
if (this.isSerifFont(name)) {
lookupName = 'Times-Roman';
} else {
lookupName = 'Helvetica';
}
}
var glyphWidths = Metrics[lookupName];
if (isNum(glyphWidths)) {
defaultWidth = glyphWidths;
monospace = true;
} else {
widths = glyphWidths();
}
return {
defaultWidth: defaultWidth,
monospace: monospace,
widths: widths
};
},
buildCharCodeToWidth: function PartialEvaluator_bulildCharCodeToWidth(widthsByGlyphName, properties) {
var widths = Object.create(null);
var differences = properties.differences;
var encoding = properties.defaultEncoding;
for (var charCode = 0; charCode < 256; charCode++) {
if (charCode in differences && widthsByGlyphName[differences[charCode]]) {
widths[charCode] = widthsByGlyphName[differences[charCode]];
continue;
}
if (charCode in encoding && widthsByGlyphName[encoding[charCode]]) {
widths[charCode] = widthsByGlyphName[encoding[charCode]];
continue;
}
}
return widths;
},
preEvaluateFont: function PartialEvaluator_preEvaluateFont(dict) {
var baseDict = dict;
var type = dict.get('Subtype');
assert(isName(type), 'invalid font Subtype');
var composite = false;
var uint8array;
if (type.name === 'Type0') {
var df = dict.get('DescendantFonts');
assert(df, 'Descendant fonts are not specified');
dict = isArray(df) ? this.xref.fetchIfRef(df[0]) : df;
type = dict.get('Subtype');
assert(isName(type), 'invalid font Subtype');
composite = true;
}
var descriptor = dict.get('FontDescriptor');
if (descriptor) {
var hash = new MurmurHash3_64();
var encoding = baseDict.getRaw('Encoding');
if (isName(encoding)) {
hash.update(encoding.name);
} else if (isRef(encoding)) {
hash.update(encoding.toString());
} else if (isDict(encoding)) {
var keys = encoding.getKeys();
for (var i = 0, ii = keys.length; i < ii; i++) {
var entry = encoding.getRaw(keys[i]);
if (isName(entry)) {
hash.update(entry.name);
} else if (isRef(entry)) {
hash.update(entry.toString());
} else if (isArray(entry)) {
var diffLength = entry.length,
diffBuf = new Array(diffLength);
for (var j = 0; j < diffLength; j++) {
var diffEntry = entry[j];
if (isName(diffEntry)) {
diffBuf[j] = diffEntry.name;
} else if (isNum(diffEntry) || isRef(diffEntry)) {
diffBuf[j] = diffEntry.toString();
}
}
hash.update(diffBuf.join());
}
}
}
var toUnicode = dict.get('ToUnicode') || baseDict.get('ToUnicode');
if (isStream(toUnicode)) {
var stream = toUnicode.str || toUnicode;
uint8array = stream.buffer ? new Uint8Array(stream.buffer.buffer, 0, stream.bufferLength) : new Uint8Array(stream.bytes.buffer, stream.start, stream.end - stream.start);
hash.update(uint8array);
} else if (isName(toUnicode)) {
hash.update(toUnicode.name);
}
var widths = dict.get('Widths') || baseDict.get('Widths');
if (widths) {
uint8array = new Uint8Array(new Uint32Array(widths).buffer);
hash.update(uint8array);
}
}
return {
descriptor: descriptor,
dict: dict,
baseDict: baseDict,
composite: composite,
type: type.name,
hash: hash ? hash.hexdigest() : ''
};
},
translateFont: function PartialEvaluator_translateFont(preEvaluatedFont) {
var _this10 = this;
var baseDict = preEvaluatedFont.baseDict;
var dict = preEvaluatedFont.dict;
var composite = preEvaluatedFont.composite;
var descriptor = preEvaluatedFont.descriptor;
var type = preEvaluatedFont.type;
var maxCharIndex = composite ? 0xFFFF : 0xFF;
var properties;
if (!descriptor) {
if (type === 'Type3') {
descriptor = new Dict(null);
descriptor.set('FontName', Name.get(type));
descriptor.set('FontBBox', dict.getArray('FontBBox'));
} else {
var baseFontName = dict.get('BaseFont');
assert(isName(baseFontName), 'Base font is not specified');
baseFontName = baseFontName.name.replace(/[,_]/g, '-');
var metrics = this.getBaseFontMetrics(baseFontName);
var fontNameWoStyle = baseFontName.split('-')[0];
var flags = (this.isSerifFont(fontNameWoStyle) ? FontFlags.Serif : 0) | (metrics.monospace ? FontFlags.FixedPitch : 0) | (getSymbolsFonts()[fontNameWoStyle] ? FontFlags.Symbolic : FontFlags.Nonsymbolic);
properties = {
type: type,
name: baseFontName,
widths: metrics.widths,
defaultWidth: metrics.defaultWidth,
flags: flags,
firstChar: 0,
lastChar: maxCharIndex
};
return this.extractDataStructures(dict, dict, properties).then(function (properties) {
properties.widths = _this10.buildCharCodeToWidth(metrics.widths, properties);
return new Font(baseFontName, null, properties);
});
}
}
var firstChar = dict.get('FirstChar') || 0;
var lastChar = dict.get('LastChar') || maxCharIndex;
var fontName = descriptor.get('FontName');
var baseFont = dict.get('BaseFont');
if (isString(fontName)) {
fontName = Name.get(fontName);
}
if (isString(baseFont)) {
baseFont = Name.get(baseFont);
}
if (type !== 'Type3') {
var fontNameStr = fontName && fontName.name;
var baseFontStr = baseFont && baseFont.name;
if (fontNameStr !== baseFontStr) {
info('The FontDescriptor\'s FontName is "' + fontNameStr + '" but should be the same as the Font\'s BaseFont "' + baseFontStr + '"');
if (fontNameStr && baseFontStr && baseFontStr.indexOf(fontNameStr) === 0) {
fontName = baseFont;
}
}
}
fontName = fontName || baseFont;
assert(isName(fontName), 'invalid font name');
var fontFile = descriptor.get('FontFile', 'FontFile2', 'FontFile3');
if (fontFile) {
if (fontFile.dict) {
var subtype = fontFile.dict.get('Subtype');
if (subtype) {
subtype = subtype.name;
}
var length1 = fontFile.dict.get('Length1');
var length2 = fontFile.dict.get('Length2');
var length3 = fontFile.dict.get('Length3');
}
}
properties = {
type: type,
name: fontName.name,
subtype: subtype,
file: fontFile,
length1: length1,
length2: length2,
length3: length3,
loadedName: baseDict.loadedName,
composite: composite,
wideChars: composite,
fixedPitch: false,
fontMatrix: dict.getArray('FontMatrix') || FONT_IDENTITY_MATRIX,
firstChar: firstChar || 0,
lastChar: lastChar || maxCharIndex,
bbox: descriptor.getArray('FontBBox'),
ascent: descriptor.get('Ascent'),
descent: descriptor.get('Descent'),
xHeight: descriptor.get('XHeight'),
capHeight: descriptor.get('CapHeight'),
flags: descriptor.get('Flags'),
italicAngle: descriptor.get('ItalicAngle'),
coded: false
};
var cMapPromise;
if (composite) {
var cidEncoding = baseDict.get('Encoding');
if (isName(cidEncoding)) {
properties.cidEncoding = cidEncoding.name;
}
cMapPromise = CMapFactory.create({
encoding: cidEncoding,
fetchBuiltInCMap: this.fetchBuiltInCMap,
useCMap: null
}).then(function (cMap) {
properties.cMap = cMap;
properties.vertical = properties.cMap.vertical;
});
} else {
cMapPromise = Promise.resolve(undefined);
}
return cMapPromise.then(function () {
return _this10.extractDataStructures(dict, baseDict, properties);
}).then(function (properties) {
_this10.extractWidths(dict, descriptor, properties);
if (type === 'Type3') {
properties.isType3Font = true;
}
return new Font(fontName.name, fontFile, properties);
});
}
};
return PartialEvaluator;
}();
var TranslatedFont = function TranslatedFontClosure() {
function TranslatedFont(loadedName, font, dict) {
this.loadedName = loadedName;
this.font = font;
this.dict = dict;
this.type3Loaded = null;
this.sent = false;
}
TranslatedFont.prototype = {
send: function send(handler) {
if (this.sent) {
return;
}
var fontData = this.font.exportData();
handler.send('commonobj', [this.loadedName, 'Font', fontData]);
this.sent = true;
},
loadType3Data: function loadType3Data(evaluator, resources, parentOperatorList, task) {
assert(this.font.isType3Font);
if (this.type3Loaded) {
return this.type3Loaded;
}
var type3Options = Object.create(evaluator.options);
type3Options.ignoreErrors = false;
var type3Evaluator = evaluator.clone(type3Options);
var translatedFont = this.font;
var loadCharProcsPromise = Promise.resolve();
var charProcs = this.dict.get('CharProcs');
var fontResources = this.dict.get('Resources') || resources;
var charProcKeys = charProcs.getKeys();
var charProcOperatorList = Object.create(null);
var _loop2 = function _loop2() {
var key = charProcKeys[i];
loadCharProcsPromise = loadCharProcsPromise.then(function () {
var glyphStream = charProcs.get(key);
var operatorList = new OperatorList();
return type3Evaluator.getOperatorList({
stream: glyphStream,
task: task,
resources: fontResources,
operatorList: operatorList
}).then(function () {
charProcOperatorList[key] = operatorList.getIR();
parentOperatorList.addDependencies(operatorList.dependencies);
}).catch(function (reason) {
warn('Type3 font resource "' + key + '" is not available.');
var operatorList = new OperatorList();
charProcOperatorList[key] = operatorList.getIR();
});
});
};
for (var i = 0, n = charProcKeys.length; i < n; ++i) {
_loop2();
}
this.type3Loaded = loadCharProcsPromise.then(function () {
translatedFont.charProcOperatorList = charProcOperatorList;
});
return this.type3Loaded;
}
};
return TranslatedFont;
}();
var OperatorList = function OperatorListClosure() {
var CHUNK_SIZE = 1000;
var CHUNK_SIZE_ABOUT = CHUNK_SIZE - 5;
function getTransfers(queue) {
var transfers = [];
var fnArray = queue.fnArray,
argsArray = queue.argsArray;
for (var i = 0, ii = queue.length; i < ii; i++) {
switch (fnArray[i]) {
case OPS.paintInlineImageXObject:
case OPS.paintInlineImageXObjectGroup:
case OPS.paintImageMaskXObject:
var arg = argsArray[i][0];
if (!arg.cached) {
transfers.push(arg.data.buffer);
}
break;
}
}
return transfers;
}
function OperatorList(intent, messageHandler, pageIndex) {
this.messageHandler = messageHandler;
this.fnArray = [];
this.argsArray = [];
this.dependencies = Object.create(null);
this._totalLength = 0;
this.pageIndex = pageIndex;
this.intent = intent;
}
OperatorList.prototype = {
get length() {
return this.argsArray.length;
},
get totalLength() {
return this._totalLength + this.length;
},
addOp: function addOp(fn, args) {
this.fnArray.push(fn);
this.argsArray.push(args);
if (this.messageHandler) {
if (this.fnArray.length >= CHUNK_SIZE) {
this.flush();
} else if (this.fnArray.length >= CHUNK_SIZE_ABOUT && (fn === OPS.restore || fn === OPS.endText)) {
this.flush();
}
}
},
addDependency: function addDependency(dependency) {
if (dependency in this.dependencies) {
return;
}
this.dependencies[dependency] = true;
this.addOp(OPS.dependency, [dependency]);
},
addDependencies: function addDependencies(dependencies) {
for (var key in dependencies) {
this.addDependency(key);
}
},
addOpList: function addOpList(opList) {
Util.extendObj(this.dependencies, opList.dependencies);
for (var i = 0, ii = opList.length; i < ii; i++) {
this.addOp(opList.fnArray[i], opList.argsArray[i]);
}
},
getIR: function getIR() {
return {
fnArray: this.fnArray,
argsArray: this.argsArray,
length: this.length
};
},
flush: function flush(lastChunk) {
if (this.intent !== 'oplist') {
new QueueOptimizer().optimize(this);
}
var transfers = getTransfers(this);
var length = this.length;
this._totalLength += length;
this.messageHandler.send('RenderPageChunk', {
operatorList: {
fnArray: this.fnArray,
argsArray: this.argsArray,
lastChunk: lastChunk,
length: length
},
pageIndex: this.pageIndex,
intent: this.intent
}, transfers);
this.dependencies = Object.create(null);
this.fnArray.length = 0;
this.argsArray.length = 0;
}
};
return OperatorList;
}();
var StateManager = function StateManagerClosure() {
function StateManager(initialState) {
this.state = initialState;
this.stateStack = [];
}
StateManager.prototype = {
save: function save() {
var old = this.state;
this.stateStack.push(this.state);
this.state = old.clone();
},
restore: function restore() {
var prev = this.stateStack.pop();
if (prev) {
this.state = prev;
}
},
transform: function transform(args) {
this.state.ctm = Util.transform(this.state.ctm, args);
}
};
return StateManager;
}();
var TextState = function TextStateClosure() {
function TextState() {
this.ctm = new Float32Array(IDENTITY_MATRIX);
this.fontName = null;
this.fontSize = 0;
this.font = null;
this.fontMatrix = FONT_IDENTITY_MATRIX;
this.textMatrix = IDENTITY_MATRIX.slice();
this.textLineMatrix = IDENTITY_MATRIX.slice();
this.charSpacing = 0;
this.wordSpacing = 0;
this.leading = 0;
this.textHScale = 1;
this.textRise = 0;
}
TextState.prototype = {
setTextMatrix: function TextState_setTextMatrix(a, b, c, d, e, f) {
var m = this.textMatrix;
m[0] = a;
m[1] = b;
m[2] = c;
m[3] = d;
m[4] = e;
m[5] = f;
},
setTextLineMatrix: function TextState_setTextMatrix(a, b, c, d, e, f) {
var m = this.textLineMatrix;
m[0] = a;
m[1] = b;
m[2] = c;
m[3] = d;
m[4] = e;
m[5] = f;
},
translateTextMatrix: function TextState_translateTextMatrix(x, y) {
var m = this.textMatrix;
m[4] = m[0] * x + m[2] * y + m[4];
m[5] = m[1] * x + m[3] * y + m[5];
},
translateTextLineMatrix: function TextState_translateTextMatrix(x, y) {
var m = this.textLineMatrix;
m[4] = m[0] * x + m[2] * y + m[4];
m[5] = m[1] * x + m[3] * y + m[5];
},
calcTextLineMatrixAdvance: function TextState_calcTextLineMatrixAdvance(a, b, c, d, e, f) {
var font = this.font;
if (!font) {
return null;
}
var m = this.textLineMatrix;
if (!(a === m[0] && b === m[1] && c === m[2] && d === m[3])) {
return null;
}
var txDiff = e - m[4],
tyDiff = f - m[5];
if (font.vertical && txDiff !== 0 || !font.vertical && tyDiff !== 0) {
return null;
}
var tx,
ty,
denominator = a * d - b * c;
if (font.vertical) {
tx = -tyDiff * c / denominator;
ty = tyDiff * a / denominator;
} else {
tx = txDiff * d / denominator;
ty = -txDiff * b / denominator;
}
return {
width: tx,
height: ty,
value: font.vertical ? ty : tx
};
},
calcRenderMatrix: function TextState_calcRendeMatrix(ctm) {
var tsm = [this.fontSize * this.textHScale, 0, 0, this.fontSize, 0, this.textRise];
return Util.transform(ctm, Util.transform(this.textMatrix, tsm));
},
carriageReturn: function TextState_carriageReturn() {
this.translateTextLineMatrix(0, -this.leading);
this.textMatrix = this.textLineMatrix.slice();
},
clone: function TextState_clone() {
var clone = Object.create(this);
clone.textMatrix = this.textMatrix.slice();
clone.textLineMatrix = this.textLineMatrix.slice();
clone.fontMatrix = this.fontMatrix.slice();
return clone;
}
};
return TextState;
}();
var EvalState = function EvalStateClosure() {
function EvalState() {
this.ctm = new Float32Array(IDENTITY_MATRIX);
this.font = null;
this.textRenderingMode = TextRenderingMode.FILL;
this.fillColorSpace = ColorSpace.singletons.gray;
this.strokeColorSpace = ColorSpace.singletons.gray;
}
EvalState.prototype = {
clone: function CanvasExtraState_clone() {
return Object.create(this);
}
};
return EvalState;
}();
var EvaluatorPreprocessor = function EvaluatorPreprocessorClosure() {
var getOPMap = getLookupTableFactory(function (t) {
t['w'] = {
id: OPS.setLineWidth,
numArgs: 1,
variableArgs: false
};
t['J'] = {
id: OPS.setLineCap,
numArgs: 1,
variableArgs: false
};
t['j'] = {
id: OPS.setLineJoin,
numArgs: 1,
variableArgs: false
};
t['M'] = {
id: OPS.setMiterLimit,
numArgs: 1,
variableArgs: false
};
t['d'] = {
id: OPS.setDash,
numArgs: 2,
variableArgs: false
};
t['ri'] = {
id: OPS.setRenderingIntent,
numArgs: 1,
variableArgs: false
};
t['i'] = {
id: OPS.setFlatness,
numArgs: 1,
variableArgs: false
};
t['gs'] = {
id: OPS.setGState,
numArgs: 1,
variableArgs: false
};
t['q'] = {
id: OPS.save,
numArgs: 0,
variableArgs: false
};
t['Q'] = {
id: OPS.restore,
numArgs: 0,
variableArgs: false
};
t['cm'] = {
id: OPS.transform,
numArgs: 6,
variableArgs: false
};
t['m'] = {
id: OPS.moveTo,
numArgs: 2,
variableArgs: false
};
t['l'] = {
id: OPS.lineTo,
numArgs: 2,
variableArgs: false
};
t['c'] = {
id: OPS.curveTo,
numArgs: 6,
variableArgs: false
};
t['v'] = {
id: OPS.curveTo2,
numArgs: 4,
variableArgs: false
};
t['y'] = {
id: OPS.curveTo3,
numArgs: 4,
variableArgs: false
};
t['h'] = {
id: OPS.closePath,
numArgs: 0,
variableArgs: false
};
t['re'] = {
id: OPS.rectangle,
numArgs: 4,
variableArgs: false
};
t['S'] = {
id: OPS.stroke,
numArgs: 0,
variableArgs: false
};
t['s'] = {
id: OPS.closeStroke,
numArgs: 0,
variableArgs: false
};
t['f'] = {
id: OPS.fill,
numArgs: 0,
variableArgs: false
};
t['F'] = {
id: OPS.fill,
numArgs: 0,
variableArgs: false
};
t['f*'] = {
id: OPS.eoFill,
numArgs: 0,
variableArgs: false
};
t['B'] = {
id: OPS.fillStroke,
numArgs: 0,
variableArgs: false
};
t['B*'] = {
id: OPS.eoFillStroke,
numArgs: 0,
variableArgs: false
};
t['b'] = {
id: OPS.closeFillStroke,
numArgs: 0,
variableArgs: false
};
t['b*'] = {
id: OPS.closeEOFillStroke,
numArgs: 0,
variableArgs: false
};
t['n'] = {
id: OPS.endPath,
numArgs: 0,
variableArgs: false
};
t['W'] = {
id: OPS.clip,
numArgs: 0,
variableArgs: false
};
t['W*'] = {
id: OPS.eoClip,
numArgs: 0,
variableArgs: false
};
t['BT'] = {
id: OPS.beginText,
numArgs: 0,
variableArgs: false
};
t['ET'] = {
id: OPS.endText,
numArgs: 0,
variableArgs: false
};
t['Tc'] = {
id: OPS.setCharSpacing,
numArgs: 1,
variableArgs: false
};
t['Tw'] = {
id: OPS.setWordSpacing,
numArgs: 1,
variableArgs: false
};
t['Tz'] = {
id: OPS.setHScale,
numArgs: 1,
variableArgs: false
};
t['TL'] = {
id: OPS.setLeading,
numArgs: 1,
variableArgs: false
};
t['Tf'] = {
id: OPS.setFont,
numArgs: 2,
variableArgs: false
};
t['Tr'] = {
id: OPS.setTextRenderingMode,
numArgs: 1,
variableArgs: false
};
t['Ts'] = {
id: OPS.setTextRise,
numArgs: 1,
variableArgs: false
};
t['Td'] = {
id: OPS.moveText,
numArgs: 2,
variableArgs: false
};
t['TD'] = {
id: OPS.setLeadingMoveText,
numArgs: 2,
variableArgs: false
};
t['Tm'] = {
id: OPS.setTextMatrix,
numArgs: 6,
variableArgs: false
};
t['T*'] = {
id: OPS.nextLine,
numArgs: 0,
variableArgs: false
};
t['Tj'] = {
id: OPS.showText,
numArgs: 1,
variableArgs: false
};
t['TJ'] = {
id: OPS.showSpacedText,
numArgs: 1,
variableArgs: false
};
t['\''] = {
id: OPS.nextLineShowText,
numArgs: 1,
variableArgs: false
};
t['"'] = {
id: OPS.nextLineSetSpacingShowText,
numArgs: 3,
variableArgs: false
};
t['d0'] = {
id: OPS.setCharWidth,
numArgs: 2,
variableArgs: false
};
t['d1'] = {
id: OPS.setCharWidthAndBounds,
numArgs: 6,
variableArgs: false
};
t['CS'] = {
id: OPS.setStrokeColorSpace,
numArgs: 1,
variableArgs: false
};
t['cs'] = {
id: OPS.setFillColorSpace,
numArgs: 1,
variableArgs: false
};
t['SC'] = {
id: OPS.setStrokeColor,
numArgs: 4,
variableArgs: true
};
t['SCN'] = {
id: OPS.setStrokeColorN,
numArgs: 33,
variableArgs: true
};
t['sc'] = {
id: OPS.setFillColor,
numArgs: 4,
variableArgs: true
};
t['scn'] = {
id: OPS.setFillColorN,
numArgs: 33,
variableArgs: true
};
t['G'] = {
id: OPS.setStrokeGray,
numArgs: 1,
variableArgs: false
};
t['g'] = {
id: OPS.setFillGray,
numArgs: 1,
variableArgs: false
};
t['RG'] = {
id: OPS.setStrokeRGBColor,
numArgs: 3,
variableArgs: false
};
t['rg'] = {
id: OPS.setFillRGBColor,
numArgs: 3,
variableArgs: false
};
t['K'] = {
id: OPS.setStrokeCMYKColor,
numArgs: 4,
variableArgs: false
};
t['k'] = {
id: OPS.setFillCMYKColor,
numArgs: 4,
variableArgs: false
};
t['sh'] = {
id: OPS.shadingFill,
numArgs: 1,
variableArgs: false
};
t['BI'] = {
id: OPS.beginInlineImage,
numArgs: 0,
variableArgs: false
};
t['ID'] = {
id: OPS.beginImageData,
numArgs: 0,
variableArgs: false
};
t['EI'] = {
id: OPS.endInlineImage,
numArgs: 1,
variableArgs: false
};
t['Do'] = {
id: OPS.paintXObject,
numArgs: 1,
variableArgs: false
};
t['MP'] = {
id: OPS.markPoint,
numArgs: 1,
variableArgs: false
};
t['DP'] = {
id: OPS.markPointProps,
numArgs: 2,
variableArgs: false
};
t['BMC'] = {
id: OPS.beginMarkedContent,
numArgs: 1,
variableArgs: false
};
t['BDC'] = {
id: OPS.beginMarkedContentProps,
numArgs: 2,
variableArgs: false
};
t['EMC'] = {
id: OPS.endMarkedContent,
numArgs: 0,
variableArgs: false
};
t['BX'] = {
id: OPS.beginCompat,
numArgs: 0,
variableArgs: false
};
t['EX'] = {
id: OPS.endCompat,
numArgs: 0,
variableArgs: false
};
t['BM'] = null;
t['BD'] = null;
t['true'] = null;
t['fa'] = null;
t['fal'] = null;
t['fals'] = null;
t['false'] = null;
t['nu'] = null;
t['nul'] = null;
t['null'] = null;
});
function EvaluatorPreprocessor(stream, xref, stateManager) {
this.opMap = getOPMap();
this.parser = new Parser(new Lexer(stream, this.opMap), false, xref);
this.stateManager = stateManager;
this.nonProcessedArgs = [];
}
EvaluatorPreprocessor.prototype = {
get savedStatesDepth() {
return this.stateManager.stateStack.length;
},
read: function EvaluatorPreprocessor_read(operation) {
var args = operation.args;
while (true) {
var obj = this.parser.getObj();
if (isCmd(obj)) {
var cmd = obj.cmd;
var opSpec = this.opMap[cmd];
if (!opSpec) {
warn('Unknown command "' + cmd + '"');
continue;
}
var fn = opSpec.id;
var numArgs = opSpec.numArgs;
var argsLength = args !== null ? args.length : 0;
if (!opSpec.variableArgs) {
if (argsLength !== numArgs) {
var nonProcessedArgs = this.nonProcessedArgs;
while (argsLength > numArgs) {
nonProcessedArgs.push(args.shift());
argsLength--;
}
while (argsLength < numArgs && nonProcessedArgs.length !== 0) {
if (args === null) {
args = [];
}
args.unshift(nonProcessedArgs.pop());
argsLength++;
}
}
if (argsLength < numArgs) {
warn('Skipping command ' + fn + ': expected ' + numArgs + ' args, but received ' + argsLength + ' args.');
if (args !== null) {
args.length = 0;
}
continue;
}
} else if (argsLength > numArgs) {
info('Command ' + fn + ': expected [0,' + numArgs + '] args, but received ' + argsLength + ' args.');
}
this.preprocessCommand(fn, args);
operation.fn = fn;
operation.args = args;
return true;
}
if (isEOF(obj)) {
return false;
}
if (obj !== null) {
if (args === null) {
args = [];
}
args.push(obj);
assert(args.length <= 33, 'Too many arguments');
}
}
},
preprocessCommand: function EvaluatorPreprocessor_preprocessCommand(fn, args) {
switch (fn | 0) {
case OPS.save:
this.stateManager.save();
break;
case OPS.restore:
this.stateManager.restore();
break;
case OPS.transform:
this.stateManager.transform(args);
break;
}
}
};
return EvaluatorPreprocessor;
}();
var QueueOptimizer = function QueueOptimizerClosure() {
function addState(parentState, pattern, fn) {
var state = parentState;
for (var i = 0, ii = pattern.length - 1; i < ii; i++) {
var item = pattern[i];
state = state[item] || (state[item] = []);
}
state[pattern[pattern.length - 1]] = fn;
}
function handlePaintSolidColorImageMask(iFirstSave, count, fnArray, argsArray) {
var iFirstPIMXO = iFirstSave + 2;
for (var i = 0; i < count; i++) {
var arg = argsArray[iFirstPIMXO + 4 * i];
var imageMask = arg.length === 1 && arg[0];
if (imageMask && imageMask.width === 1 && imageMask.height === 1 && (!imageMask.data.length || imageMask.data.length === 1 && imageMask.data[0] === 0)) {
fnArray[iFirstPIMXO + 4 * i] = OPS.paintSolidColorImageMask;
continue;
}
break;
}
return count - i;
}
var InitialState = [];
addState(InitialState, [OPS.save, OPS.transform, OPS.paintInlineImageXObject, OPS.restore], function foundInlineImageGroup(context) {
var MIN_IMAGES_IN_INLINE_IMAGES_BLOCK = 10;
var MAX_IMAGES_IN_INLINE_IMAGES_BLOCK = 200;
var MAX_WIDTH = 1000;
var IMAGE_PADDING = 1;
var fnArray = context.fnArray,
argsArray = context.argsArray;
var curr = context.iCurr;
var iFirstSave = curr - 3;
var iFirstTransform = curr - 2;
var iFirstPIIXO = curr - 1;
var i = iFirstSave + 4;
var ii = fnArray.length;
while (i + 3 < ii) {
if (fnArray[i] !== OPS.save || fnArray[i + 1] !== OPS.transform || fnArray[i + 2] !== OPS.paintInlineImageXObject || fnArray[i + 3] !== OPS.restore) {
break;
}
i += 4;
}
var count = Math.min((i - iFirstSave) / 4, MAX_IMAGES_IN_INLINE_IMAGES_BLOCK);
if (count < MIN_IMAGES_IN_INLINE_IMAGES_BLOCK) {
return i;
}
var maxX = 0;
var map = [],
maxLineHeight = 0;
var currentX = IMAGE_PADDING,
currentY = IMAGE_PADDING;
var q;
for (q = 0; q < count; q++) {
var transform = argsArray[iFirstTransform + (q << 2)];
var img = argsArray[iFirstPIIXO + (q << 2)][0];
if (currentX + img.width > MAX_WIDTH) {
maxX = Math.max(maxX, currentX);
currentY += maxLineHeight + 2 * IMAGE_PADDING;
currentX = 0;
maxLineHeight = 0;
}
map.push({
transform: transform,
x: currentX,
y: currentY,
w: img.width,
h: img.height
});
currentX += img.width + 2 * IMAGE_PADDING;
maxLineHeight = Math.max(maxLineHeight, img.height);
}
var imgWidth = Math.max(maxX, currentX) + IMAGE_PADDING;
var imgHeight = currentY + maxLineHeight + IMAGE_PADDING;
var imgData = new Uint8Array(imgWidth * imgHeight * 4);
var imgRowSize = imgWidth << 2;
for (q = 0; q < count; q++) {
var data = argsArray[iFirstPIIXO + (q << 2)][0].data;
var rowSize = map[q].w << 2;
var dataOffset = 0;
var offset = map[q].x + map[q].y * imgWidth << 2;
imgData.set(data.subarray(0, rowSize), offset - imgRowSize);
for (var k = 0, kk = map[q].h; k < kk; k++) {
imgData.set(data.subarray(dataOffset, dataOffset + rowSize), offset);
dataOffset += rowSize;
offset += imgRowSize;
}
imgData.set(data.subarray(dataOffset - rowSize, dataOffset), offset);
while (offset >= 0) {
data[offset - 4] = data[offset];
data[offset - 3] = data[offset + 1];
data[offset - 2] = data[offset + 2];
data[offset - 1] = data[offset + 3];
data[offset + rowSize] = data[offset + rowSize - 4];
data[offset + rowSize + 1] = data[offset + rowSize - 3];
data[offset + rowSize + 2] = data[offset + rowSize - 2];
data[offset + rowSize + 3] = data[offset + rowSize - 1];
offset -= imgRowSize;
}
}
fnArray.splice(iFirstSave, count * 4, OPS.paintInlineImageXObjectGroup);
argsArray.splice(iFirstSave, count * 4, [{
width: imgWidth,
height: imgHeight,
kind: ImageKind.RGBA_32BPP,
data: imgData
}, map]);
return iFirstSave + 1;
});
addState(InitialState, [OPS.save, OPS.transform, OPS.paintImageMaskXObject, OPS.restore], function foundImageMaskGroup(context) {
var MIN_IMAGES_IN_MASKS_BLOCK = 10;
var MAX_IMAGES_IN_MASKS_BLOCK = 100;
var MAX_SAME_IMAGES_IN_MASKS_BLOCK = 1000;
var fnArray = context.fnArray,
argsArray = context.argsArray;
var curr = context.iCurr;
var iFirstSave = curr - 3;
var iFirstTransform = curr - 2;
var iFirstPIMXO = curr - 1;
var i = iFirstSave + 4;
var ii = fnArray.length;
while (i + 3 < ii) {
if (fnArray[i] !== OPS.save || fnArray[i + 1] !== OPS.transform || fnArray[i + 2] !== OPS.paintImageMaskXObject || fnArray[i + 3] !== OPS.restore) {
break;
}
i += 4;
}
var count = (i - iFirstSave) / 4;
count = handlePaintSolidColorImageMask(iFirstSave, count, fnArray, argsArray);
if (count < MIN_IMAGES_IN_MASKS_BLOCK) {
return i;
}
var q;
var isSameImage = false;
var iTransform, transformArgs;
var firstPIMXOArg0 = argsArray[iFirstPIMXO][0];
if (argsArray[iFirstTransform][1] === 0 && argsArray[iFirstTransform][2] === 0) {
isSameImage = true;
var firstTransformArg0 = argsArray[iFirstTransform][0];
var firstTransformArg3 = argsArray[iFirstTransform][3];
iTransform = iFirstTransform + 4;
var iPIMXO = iFirstPIMXO + 4;
for (q = 1; q < count; q++, iTransform += 4, iPIMXO += 4) {
transformArgs = argsArray[iTransform];
if (argsArray[iPIMXO][0] !== firstPIMXOArg0 || transformArgs[0] !== firstTransformArg0 || transformArgs[1] !== 0 || transformArgs[2] !== 0 || transformArgs[3] !== firstTransformArg3) {
if (q < MIN_IMAGES_IN_MASKS_BLOCK) {
isSameImage = false;
} else {
count = q;
}
break;
}
}
}
if (isSameImage) {
count = Math.min(count, MAX_SAME_IMAGES_IN_MASKS_BLOCK);
var positions = new Float32Array(count * 2);
iTransform = iFirstTransform;
for (q = 0; q < count; q++, iTransform += 4) {
transformArgs = argsArray[iTransform];
positions[q << 1] = transformArgs[4];
positions[(q << 1) + 1] = transformArgs[5];
}
fnArray.splice(iFirstSave, count * 4, OPS.paintImageMaskXObjectRepeat);
argsArray.splice(iFirstSave, count * 4, [firstPIMXOArg0, firstTransformArg0, firstTransformArg3, positions]);
} else {
count = Math.min(count, MAX_IMAGES_IN_MASKS_BLOCK);
var images = [];
for (q = 0; q < count; q++) {
transformArgs = argsArray[iFirstTransform + (q << 2)];
var maskParams = argsArray[iFirstPIMXO + (q << 2)][0];
images.push({
data: maskParams.data,
width: maskParams.width,
height: maskParams.height,
transform: transformArgs
});
}
fnArray.splice(iFirstSave, count * 4, OPS.paintImageMaskXObjectGroup);
argsArray.splice(iFirstSave, count * 4, [images]);
}
return iFirstSave + 1;
});
addState(InitialState, [OPS.save, OPS.transform, OPS.paintImageXObject, OPS.restore], function (context) {
var MIN_IMAGES_IN_BLOCK = 3;
var MAX_IMAGES_IN_BLOCK = 1000;
var fnArray = context.fnArray,
argsArray = context.argsArray;
var curr = context.iCurr;
var iFirstSave = curr - 3;
var iFirstTransform = curr - 2;
var iFirstPIXO = curr - 1;
var iFirstRestore = curr;
if (argsArray[iFirstTransform][1] !== 0 || argsArray[iFirstTransform][2] !== 0) {
return iFirstRestore + 1;
}
var firstPIXOArg0 = argsArray[iFirstPIXO][0];
var firstTransformArg0 = argsArray[iFirstTransform][0];
var firstTransformArg3 = argsArray[iFirstTransform][3];
var i = iFirstSave + 4;
var ii = fnArray.length;
while (i + 3 < ii) {
if (fnArray[i] !== OPS.save || fnArray[i + 1] !== OPS.transform || fnArray[i + 2] !== OPS.paintImageXObject || fnArray[i + 3] !== OPS.restore) {
break;
}
if (argsArray[i + 1][0] !== firstTransformArg0 || argsArray[i + 1][1] !== 0 || argsArray[i + 1][2] !== 0 || argsArray[i + 1][3] !== firstTransformArg3) {
break;
}
if (argsArray[i + 2][0] !== firstPIXOArg0) {
break;
}
i += 4;
}
var count = Math.min((i - iFirstSave) / 4, MAX_IMAGES_IN_BLOCK);
if (count < MIN_IMAGES_IN_BLOCK) {
return i;
}
var positions = new Float32Array(count * 2);
var iTransform = iFirstTransform;
for (var q = 0; q < count; q++, iTransform += 4) {
var transformArgs = argsArray[iTransform];
positions[q << 1] = transformArgs[4];
positions[(q << 1) + 1] = transformArgs[5];
}
var args = [firstPIXOArg0, firstTransformArg0, firstTransformArg3, positions];
fnArray.splice(iFirstSave, count * 4, OPS.paintImageXObjectRepeat);
argsArray.splice(iFirstSave, count * 4, args);
return iFirstSave + 1;
});
addState(InitialState, [OPS.beginText, OPS.setFont, OPS.setTextMatrix, OPS.showText, OPS.endText], function (context) {
var MIN_CHARS_IN_BLOCK = 3;
var MAX_CHARS_IN_BLOCK = 1000;
var fnArray = context.fnArray,
argsArray = context.argsArray;
var curr = context.iCurr;
var iFirstBeginText = curr - 4;
var iFirstSetFont = curr - 3;
var iFirstSetTextMatrix = curr - 2;
var iFirstShowText = curr - 1;
var iFirstEndText = curr;
var firstSetFontArg0 = argsArray[iFirstSetFont][0];
var firstSetFontArg1 = argsArray[iFirstSetFont][1];
var i = iFirstBeginText + 5;
var ii = fnArray.length;
while (i + 4 < ii) {
if (fnArray[i] !== OPS.beginText || fnArray[i + 1] !== OPS.setFont || fnArray[i + 2] !== OPS.setTextMatrix || fnArray[i + 3] !== OPS.showText || fnArray[i + 4] !== OPS.endText) {
break;
}
if (argsArray[i + 1][0] !== firstSetFontArg0 || argsArray[i + 1][1] !== firstSetFontArg1) {
break;
}
i += 5;
}
var count = Math.min((i - iFirstBeginText) / 5, MAX_CHARS_IN_BLOCK);
if (count < MIN_CHARS_IN_BLOCK) {
return i;
}
var iFirst = iFirstBeginText;
if (iFirstBeginText >= 4 && fnArray[iFirstBeginText - 4] === fnArray[iFirstSetFont] && fnArray[iFirstBeginText - 3] === fnArray[iFirstSetTextMatrix] && fnArray[iFirstBeginText - 2] === fnArray[iFirstShowText] && fnArray[iFirstBeginText - 1] === fnArray[iFirstEndText] && argsArray[iFirstBeginText - 4][0] === firstSetFontArg0 && argsArray[iFirstBeginText - 4][1] === firstSetFontArg1) {
count++;
iFirst -= 5;
}
var iEndText = iFirst + 4;
for (var q = 1; q < count; q++) {
fnArray.splice(iEndText, 3);
argsArray.splice(iEndText, 3);
iEndText += 2;
}
return iEndText + 1;
});
function QueueOptimizer() {}
QueueOptimizer.prototype = {
optimize: function QueueOptimizer_optimize(queue) {
var fnArray = queue.fnArray,
argsArray = queue.argsArray;
var context = {
iCurr: 0,
fnArray: fnArray,
argsArray: argsArray
};
var state;
var i = 0,
ii = fnArray.length;
while (i < ii) {
state = (state || InitialState)[fnArray[i]];
if (typeof state === 'function') {
context.iCurr = i;
i = state(context);
state = undefined;
ii = context.fnArray.length;
} else {
i++;
}
}
}
};
return QueueOptimizer;
}();
exports.OperatorList = OperatorList;
exports.PartialEvaluator = PartialEvaluator;