@ckhordiasma/pdfjs-dist
Version:
Generic build of Mozilla's PDF.js library, with additional access to XFA information through API
1,865 lines (1,600 loc) • 241 kB
JavaScript
/**
* @licstart The following is the entire license notice for the
* Javascript code in this page
*
* Copyright 2020 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(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory();
else if(typeof define === 'function' && define.amd)
define("pdfjs-dist/image_decoders/pdf.image_decoders", [], factory);
else if(typeof exports === 'object')
exports["pdfjs-dist/image_decoders/pdf.image_decoders"] = factory();
else
root["pdfjs-dist/image_decoders/pdf.image_decoders"] = root.pdfjsImageDecoders = factory();
})(this, function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __w_pdfjs_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __w_pdfjs_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __w_pdfjs_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __w_pdfjs_require__.c = installedModules;
/******/
/******/ // define getter function for harmony exports
/******/ __w_pdfjs_require__.d = function(exports, name, getter) {
/******/ if(!__w_pdfjs_require__.o(exports, name)) {
/******/ Object.defineProperty(exports, name, { enumerable: true, get: getter });
/******/ }
/******/ };
/******/
/******/ // define __esModule on exports
/******/ __w_pdfjs_require__.r = function(exports) {
/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ }
/******/ Object.defineProperty(exports, '__esModule', { value: true });
/******/ };
/******/
/******/ // create a fake namespace object
/******/ // mode & 1: value is a module id, require it
/******/ // mode & 2: merge all properties of value into the ns
/******/ // mode & 4: return value when already ns object
/******/ // mode & 8|1: behave like require
/******/ __w_pdfjs_require__.t = function(value, mode) {
/******/ if(mode & 1) value = __w_pdfjs_require__(value);
/******/ if(mode & 8) return value;
/******/ if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
/******/ var ns = Object.create(null);
/******/ __w_pdfjs_require__.r(ns);
/******/ Object.defineProperty(ns, 'default', { enumerable: true, value: value });
/******/ if(mode & 2 && typeof value != 'string') for(var key in value) __w_pdfjs_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
/******/ return ns;
/******/ };
/******/
/******/ // getDefaultExport function for compatibility with non-harmony modules
/******/ __w_pdfjs_require__.n = function(module) {
/******/ var getter = module && module.__esModule ?
/******/ function getDefault() { return module['default']; } :
/******/ function getModuleExports() { return module; };
/******/ __w_pdfjs_require__.d(getter, 'a', getter);
/******/ return getter;
/******/ };
/******/
/******/ // Object.prototype.hasOwnProperty.call
/******/ __w_pdfjs_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ // __webpack_public_path__
/******/ __w_pdfjs_require__.p = "";
/******/
/******/
/******/ // Load entry module and return exports
/******/ return __w_pdfjs_require__(__w_pdfjs_require__.s = 0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "getVerbosityLevel", {
enumerable: true,
get: function () {
return _util.getVerbosityLevel;
}
});
Object.defineProperty(exports, "setVerbosityLevel", {
enumerable: true,
get: function () {
return _util.setVerbosityLevel;
}
});
Object.defineProperty(exports, "Jbig2mage", {
enumerable: true,
get: function () {
return _jbig.Jbig2mage;
}
});
Object.defineProperty(exports, "JpegImage", {
enumerable: true,
get: function () {
return _jpg.JpegImage;
}
});
Object.defineProperty(exports, "JpxImage", {
enumerable: true,
get: function () {
return _jpx.JpxImage;
}
});
var _util = __w_pdfjs_require__(1);
var _jbig = __w_pdfjs_require__(4);
var _jpg = __w_pdfjs_require__(8);
var _jpx = __w_pdfjs_require__(9);
const pdfjsVersion = '2.7.39';
const pdfjsBuild = 'dcead9a25';
/***/ }),
/* 1 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.arrayByteLength = arrayByteLength;
exports.arraysToBytes = arraysToBytes;
exports.assert = assert;
exports.bytesToString = bytesToString;
exports.createPromiseCapability = createPromiseCapability;
exports.escapeString = escapeString;
exports.encodeToXmlString = encodeToXmlString;
exports.getModificationDate = getModificationDate;
exports.getVerbosityLevel = getVerbosityLevel;
exports.info = info;
exports.isArrayBuffer = isArrayBuffer;
exports.isArrayEqual = isArrayEqual;
exports.isBool = isBool;
exports.isNum = isNum;
exports.isString = isString;
exports.isSameOrigin = isSameOrigin;
exports.createValidAbsoluteUrl = createValidAbsoluteUrl;
exports.removeNullCharacters = removeNullCharacters;
exports.setVerbosityLevel = setVerbosityLevel;
exports.shadow = shadow;
exports.string32 = string32;
exports.stringToBytes = stringToBytes;
exports.stringToPDFString = stringToPDFString;
exports.stringToUTF8String = stringToUTF8String;
exports.utf8StringToString = utf8StringToString;
exports.warn = warn;
exports.unreachable = unreachable;
exports.IsEvalSupportedCached = exports.IsLittleEndianCached = exports.createObjectURL = exports.FormatError = exports.Util = exports.UnknownErrorException = exports.UnexpectedResponseException = exports.TextRenderingMode = exports.StreamType = exports.PermissionFlag = exports.PasswordResponses = exports.PasswordException = exports.MissingPDFException = exports.InvalidPDFException = exports.AbortException = exports.CMapCompressionType = exports.ImageKind = exports.FontType = exports.AnnotationType = exports.AnnotationStateModelType = exports.AnnotationReviewState = exports.AnnotationReplyType = exports.AnnotationMarkedState = exports.AnnotationFlag = exports.AnnotationFieldFlag = exports.AnnotationBorderStyleType = exports.UNSUPPORTED_FEATURES = exports.VerbosityLevel = exports.OPS = exports.IDENTITY_MATRIX = exports.FONT_IDENTITY_MATRIX = exports.BaseException = void 0;
__w_pdfjs_require__(2);
const IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
exports.IDENTITY_MATRIX = IDENTITY_MATRIX;
const FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0];
exports.FONT_IDENTITY_MATRIX = FONT_IDENTITY_MATRIX;
const PermissionFlag = {
PRINT: 0x04,
MODIFY_CONTENTS: 0x08,
COPY: 0x10,
MODIFY_ANNOTATIONS: 0x20,
FILL_INTERACTIVE_FORMS: 0x100,
COPY_FOR_ACCESSIBILITY: 0x200,
ASSEMBLE: 0x400,
PRINT_HIGH_QUALITY: 0x800
};
exports.PermissionFlag = PermissionFlag;
const TextRenderingMode = {
FILL: 0,
STROKE: 1,
FILL_STROKE: 2,
INVISIBLE: 3,
FILL_ADD_TO_PATH: 4,
STROKE_ADD_TO_PATH: 5,
FILL_STROKE_ADD_TO_PATH: 6,
ADD_TO_PATH: 7,
FILL_STROKE_MASK: 3,
ADD_TO_PATH_FLAG: 4
};
exports.TextRenderingMode = TextRenderingMode;
const ImageKind = {
GRAYSCALE_1BPP: 1,
RGB_24BPP: 2,
RGBA_32BPP: 3
};
exports.ImageKind = ImageKind;
const AnnotationType = {
TEXT: 1,
LINK: 2,
FREETEXT: 3,
LINE: 4,
SQUARE: 5,
CIRCLE: 6,
POLYGON: 7,
POLYLINE: 8,
HIGHLIGHT: 9,
UNDERLINE: 10,
SQUIGGLY: 11,
STRIKEOUT: 12,
STAMP: 13,
CARET: 14,
INK: 15,
POPUP: 16,
FILEATTACHMENT: 17,
SOUND: 18,
MOVIE: 19,
WIDGET: 20,
SCREEN: 21,
PRINTERMARK: 22,
TRAPNET: 23,
WATERMARK: 24,
THREED: 25,
REDACT: 26
};
exports.AnnotationType = AnnotationType;
const AnnotationStateModelType = {
MARKED: "Marked",
REVIEW: "Review"
};
exports.AnnotationStateModelType = AnnotationStateModelType;
const AnnotationMarkedState = {
MARKED: "Marked",
UNMARKED: "Unmarked"
};
exports.AnnotationMarkedState = AnnotationMarkedState;
const AnnotationReviewState = {
ACCEPTED: "Accepted",
REJECTED: "Rejected",
CANCELLED: "Cancelled",
COMPLETED: "Completed",
NONE: "None"
};
exports.AnnotationReviewState = AnnotationReviewState;
const AnnotationReplyType = {
GROUP: "Group",
REPLY: "R"
};
exports.AnnotationReplyType = AnnotationReplyType;
const AnnotationFlag = {
INVISIBLE: 0x01,
HIDDEN: 0x02,
PRINT: 0x04,
NOZOOM: 0x08,
NOROTATE: 0x10,
NOVIEW: 0x20,
READONLY: 0x40,
LOCKED: 0x80,
TOGGLENOVIEW: 0x100,
LOCKEDCONTENTS: 0x200
};
exports.AnnotationFlag = AnnotationFlag;
const AnnotationFieldFlag = {
READONLY: 0x0000001,
REQUIRED: 0x0000002,
NOEXPORT: 0x0000004,
MULTILINE: 0x0001000,
PASSWORD: 0x0002000,
NOTOGGLETOOFF: 0x0004000,
RADIO: 0x0008000,
PUSHBUTTON: 0x0010000,
COMBO: 0x0020000,
EDIT: 0x0040000,
SORT: 0x0080000,
FILESELECT: 0x0100000,
MULTISELECT: 0x0200000,
DONOTSPELLCHECK: 0x0400000,
DONOTSCROLL: 0x0800000,
COMB: 0x1000000,
RICHTEXT: 0x2000000,
RADIOSINUNISON: 0x2000000,
COMMITONSELCHANGE: 0x4000000
};
exports.AnnotationFieldFlag = AnnotationFieldFlag;
const AnnotationBorderStyleType = {
SOLID: 1,
DASHED: 2,
BEVELED: 3,
INSET: 4,
UNDERLINE: 5
};
exports.AnnotationBorderStyleType = AnnotationBorderStyleType;
const StreamType = {
UNKNOWN: "UNKNOWN",
FLATE: "FLATE",
LZW: "LZW",
DCT: "DCT",
JPX: "JPX",
JBIG: "JBIG",
A85: "A85",
AHX: "AHX",
CCF: "CCF",
RLX: "RLX"
};
exports.StreamType = StreamType;
const FontType = {
UNKNOWN: "UNKNOWN",
TYPE1: "TYPE1",
TYPE1C: "TYPE1C",
CIDFONTTYPE0: "CIDFONTTYPE0",
CIDFONTTYPE0C: "CIDFONTTYPE0C",
TRUETYPE: "TRUETYPE",
CIDFONTTYPE2: "CIDFONTTYPE2",
TYPE3: "TYPE3",
OPENTYPE: "OPENTYPE",
TYPE0: "TYPE0",
MMTYPE1: "MMTYPE1"
};
exports.FontType = FontType;
const VerbosityLevel = {
ERRORS: 0,
WARNINGS: 1,
INFOS: 5
};
exports.VerbosityLevel = VerbosityLevel;
const CMapCompressionType = {
NONE: 0,
BINARY: 1,
STREAM: 2
};
exports.CMapCompressionType = CMapCompressionType;
const OPS = {
dependency: 1,
setLineWidth: 2,
setLineCap: 3,
setLineJoin: 4,
setMiterLimit: 5,
setDash: 6,
setRenderingIntent: 7,
setFlatness: 8,
setGState: 9,
save: 10,
restore: 11,
transform: 12,
moveTo: 13,
lineTo: 14,
curveTo: 15,
curveTo2: 16,
curveTo3: 17,
closePath: 18,
rectangle: 19,
stroke: 20,
closeStroke: 21,
fill: 22,
eoFill: 23,
fillStroke: 24,
eoFillStroke: 25,
closeFillStroke: 26,
closeEOFillStroke: 27,
endPath: 28,
clip: 29,
eoClip: 30,
beginText: 31,
endText: 32,
setCharSpacing: 33,
setWordSpacing: 34,
setHScale: 35,
setLeading: 36,
setFont: 37,
setTextRenderingMode: 38,
setTextRise: 39,
moveText: 40,
setLeadingMoveText: 41,
setTextMatrix: 42,
nextLine: 43,
showText: 44,
showSpacedText: 45,
nextLineShowText: 46,
nextLineSetSpacingShowText: 47,
setCharWidth: 48,
setCharWidthAndBounds: 49,
setStrokeColorSpace: 50,
setFillColorSpace: 51,
setStrokeColor: 52,
setStrokeColorN: 53,
setFillColor: 54,
setFillColorN: 55,
setStrokeGray: 56,
setFillGray: 57,
setStrokeRGBColor: 58,
setFillRGBColor: 59,
setStrokeCMYKColor: 60,
setFillCMYKColor: 61,
shadingFill: 62,
beginInlineImage: 63,
beginImageData: 64,
endInlineImage: 65,
paintXObject: 66,
markPoint: 67,
markPointProps: 68,
beginMarkedContent: 69,
beginMarkedContentProps: 70,
endMarkedContent: 71,
beginCompat: 72,
endCompat: 73,
paintFormXObjectBegin: 74,
paintFormXObjectEnd: 75,
beginGroup: 76,
endGroup: 77,
beginAnnotations: 78,
endAnnotations: 79,
beginAnnotation: 80,
endAnnotation: 81,
paintJpegXObject: 82,
paintImageMaskXObject: 83,
paintImageMaskXObjectGroup: 84,
paintImageXObject: 85,
paintInlineImageXObject: 86,
paintInlineImageXObjectGroup: 87,
paintImageXObjectRepeat: 88,
paintImageMaskXObjectRepeat: 89,
paintSolidColorImageMask: 90,
constructPath: 91
};
exports.OPS = OPS;
const UNSUPPORTED_FEATURES = {
unknown: "unknown",
forms: "forms",
javaScript: "javaScript",
smask: "smask",
shadingPattern: "shadingPattern",
font: "font",
errorTilingPattern: "errorTilingPattern",
errorExtGState: "errorExtGState",
errorXObject: "errorXObject",
errorFontLoadType3: "errorFontLoadType3",
errorFontState: "errorFontState",
errorFontMissing: "errorFontMissing",
errorFontTranslate: "errorFontTranslate",
errorColorSpace: "errorColorSpace",
errorOperatorList: "errorOperatorList",
errorFontToUnicode: "errorFontToUnicode",
errorFontLoadNative: "errorFontLoadNative",
errorFontGetPath: "errorFontGetPath",
errorMarkedContent: "errorMarkedContent"
};
exports.UNSUPPORTED_FEATURES = UNSUPPORTED_FEATURES;
const PasswordResponses = {
NEED_PASSWORD: 1,
INCORRECT_PASSWORD: 2
};
exports.PasswordResponses = PasswordResponses;
let verbosity = VerbosityLevel.WARNINGS;
function setVerbosityLevel(level) {
if (Number.isInteger(level)) {
verbosity = level;
}
}
function getVerbosityLevel() {
return verbosity;
}
function info(msg) {
if (verbosity >= VerbosityLevel.INFOS) {
console.log(`Info: ${msg}`);
}
}
function warn(msg) {
if (verbosity >= VerbosityLevel.WARNINGS) {
console.log(`Warning: ${msg}`);
}
}
function unreachable(msg) {
throw new Error(msg);
}
function assert(cond, msg) {
if (!cond) {
unreachable(msg);
}
}
function isSameOrigin(baseUrl, otherUrl) {
let base;
try {
base = new URL(baseUrl);
if (!base.origin || base.origin === "null") {
return false;
}
} catch (e) {
return false;
}
const other = new URL(otherUrl, base);
return base.origin === other.origin;
}
function _isValidProtocol(url) {
if (!url) {
return false;
}
switch (url.protocol) {
case "http:":
case "https:":
case "ftp:":
case "mailto:":
case "tel:":
return true;
default:
return false;
}
}
function createValidAbsoluteUrl(url, baseUrl) {
if (!url) {
return null;
}
try {
const absoluteUrl = baseUrl ? new URL(url, baseUrl) : new URL(url);
if (_isValidProtocol(absoluteUrl)) {
return absoluteUrl;
}
} catch (ex) {}
return null;
}
function shadow(obj, prop, value) {
Object.defineProperty(obj, prop, {
value,
enumerable: true,
configurable: true,
writable: false
});
return value;
}
const BaseException = function BaseExceptionClosure() {
function BaseException(message) {
if (this.constructor === BaseException) {
unreachable("Cannot initialize BaseException.");
}
this.message = message;
this.name = this.constructor.name;
}
BaseException.prototype = new Error();
BaseException.constructor = BaseException;
return BaseException;
}();
exports.BaseException = BaseException;
class PasswordException extends BaseException {
constructor(msg, code) {
super(msg);
this.code = code;
}
}
exports.PasswordException = PasswordException;
class UnknownErrorException extends BaseException {
constructor(msg, details) {
super(msg);
this.details = details;
}
}
exports.UnknownErrorException = UnknownErrorException;
class InvalidPDFException extends BaseException {}
exports.InvalidPDFException = InvalidPDFException;
class MissingPDFException extends BaseException {}
exports.MissingPDFException = MissingPDFException;
class UnexpectedResponseException extends BaseException {
constructor(msg, status) {
super(msg);
this.status = status;
}
}
exports.UnexpectedResponseException = UnexpectedResponseException;
class FormatError extends BaseException {}
exports.FormatError = FormatError;
class AbortException extends BaseException {}
exports.AbortException = AbortException;
const NullCharactersRegExp = /\x00/g;
function removeNullCharacters(str) {
if (typeof str !== "string") {
warn("The argument for removeNullCharacters must be a string.");
return str;
}
return str.replace(NullCharactersRegExp, "");
}
function bytesToString(bytes) {
assert(bytes !== null && typeof bytes === "object" && bytes.length !== undefined, "Invalid argument for bytesToString");
const length = bytes.length;
const MAX_ARGUMENT_COUNT = 8192;
if (length < MAX_ARGUMENT_COUNT) {
return String.fromCharCode.apply(null, bytes);
}
const strBuf = [];
for (let i = 0; i < length; i += MAX_ARGUMENT_COUNT) {
const chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length);
const chunk = bytes.subarray(i, chunkEnd);
strBuf.push(String.fromCharCode.apply(null, chunk));
}
return strBuf.join("");
}
function stringToBytes(str) {
assert(typeof str === "string", "Invalid argument for stringToBytes");
const length = str.length;
const bytes = new Uint8Array(length);
for (let i = 0; i < length; ++i) {
bytes[i] = str.charCodeAt(i) & 0xff;
}
return bytes;
}
function arrayByteLength(arr) {
if (arr.length !== undefined) {
return arr.length;
}
assert(arr.byteLength !== undefined, "arrayByteLength - invalid argument.");
return arr.byteLength;
}
function arraysToBytes(arr) {
const length = arr.length;
if (length === 1 && arr[0] instanceof Uint8Array) {
return arr[0];
}
let resultLength = 0;
for (let i = 0; i < length; i++) {
resultLength += arrayByteLength(arr[i]);
}
let pos = 0;
const data = new Uint8Array(resultLength);
for (let i = 0; i < length; i++) {
let item = arr[i];
if (!(item instanceof Uint8Array)) {
if (typeof item === "string") {
item = stringToBytes(item);
} else {
item = new Uint8Array(item);
}
}
const itemLength = item.byteLength;
data.set(item, pos);
pos += itemLength;
}
return data;
}
function string32(value) {
return String.fromCharCode(value >> 24 & 0xff, value >> 16 & 0xff, value >> 8 & 0xff, value & 0xff);
}
function isLittleEndian() {
const buffer8 = new Uint8Array(4);
buffer8[0] = 1;
const view32 = new Uint32Array(buffer8.buffer, 0, 1);
return view32[0] === 1;
}
const IsLittleEndianCached = {
get value() {
return shadow(this, "value", isLittleEndian());
}
};
exports.IsLittleEndianCached = IsLittleEndianCached;
function isEvalSupported() {
try {
new Function("");
return true;
} catch (e) {
return false;
}
}
const IsEvalSupportedCached = {
get value() {
return shadow(this, "value", isEvalSupported());
}
};
exports.IsEvalSupportedCached = IsEvalSupportedCached;
const rgbBuf = ["rgb(", 0, ",", 0, ",", 0, ")"];
class Util {
static makeCssRgb(r, g, b) {
rgbBuf[1] = r;
rgbBuf[3] = g;
rgbBuf[5] = b;
return rgbBuf.join("");
}
static transform(m1, m2) {
return [m1[0] * m2[0] + m1[2] * m2[1], m1[1] * m2[0] + m1[3] * m2[1], m1[0] * m2[2] + m1[2] * m2[3], m1[1] * m2[2] + m1[3] * m2[3], m1[0] * m2[4] + m1[2] * m2[5] + m1[4], m1[1] * m2[4] + m1[3] * m2[5] + m1[5]];
}
static applyTransform(p, m) {
const xt = p[0] * m[0] + p[1] * m[2] + m[4];
const yt = p[0] * m[1] + p[1] * m[3] + m[5];
return [xt, yt];
}
static applyInverseTransform(p, m) {
const d = m[0] * m[3] - m[1] * m[2];
const xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d;
const yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d;
return [xt, yt];
}
static getAxialAlignedBoundingBox(r, m) {
const p1 = Util.applyTransform(r, m);
const p2 = Util.applyTransform(r.slice(2, 4), m);
const p3 = Util.applyTransform([r[0], r[3]], m);
const p4 = Util.applyTransform([r[2], r[1]], m);
return [Math.min(p1[0], p2[0], p3[0], p4[0]), Math.min(p1[1], p2[1], p3[1], p4[1]), Math.max(p1[0], p2[0], p3[0], p4[0]), Math.max(p1[1], p2[1], p3[1], p4[1])];
}
static inverseTransform(m) {
const d = m[0] * m[3] - m[1] * m[2];
return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d, (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d];
}
static apply3dTransform(m, v) {
return [m[0] * v[0] + m[1] * v[1] + m[2] * v[2], m[3] * v[0] + m[4] * v[1] + m[5] * v[2], m[6] * v[0] + m[7] * v[1] + m[8] * v[2]];
}
static singularValueDecompose2dScale(m) {
const transpose = [m[0], m[2], m[1], m[3]];
const a = m[0] * transpose[0] + m[1] * transpose[2];
const b = m[0] * transpose[1] + m[1] * transpose[3];
const c = m[2] * transpose[0] + m[3] * transpose[2];
const d = m[2] * transpose[1] + m[3] * transpose[3];
const first = (a + d) / 2;
const second = Math.sqrt((a + d) * (a + d) - 4 * (a * d - c * b)) / 2;
const sx = first + second || 1;
const sy = first - second || 1;
return [Math.sqrt(sx), Math.sqrt(sy)];
}
static normalizeRect(rect) {
const r = rect.slice(0);
if (rect[0] > rect[2]) {
r[0] = rect[2];
r[2] = rect[0];
}
if (rect[1] > rect[3]) {
r[1] = rect[3];
r[3] = rect[1];
}
return r;
}
static intersect(rect1, rect2) {
function compare(a, b) {
return a - b;
}
const orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare);
const orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare);
const result = [];
rect1 = Util.normalizeRect(rect1);
rect2 = Util.normalizeRect(rect2);
if (orderedX[0] === rect1[0] && orderedX[1] === rect2[0] || orderedX[0] === rect2[0] && orderedX[1] === rect1[0]) {
result[0] = orderedX[1];
result[2] = orderedX[2];
} else {
return null;
}
if (orderedY[0] === rect1[1] && orderedY[1] === rect2[1] || orderedY[0] === rect2[1] && orderedY[1] === rect1[1]) {
result[1] = orderedY[1];
result[3] = orderedY[2];
} else {
return null;
}
return result;
}
}
exports.Util = Util;
const PDFStringTranslateTable = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2D8, 0x2C7, 0x2C6, 0x2D9, 0x2DD, 0x2DB, 0x2DA, 0x2DC, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014, 0x2013, 0x192, 0x2044, 0x2039, 0x203A, 0x2212, 0x2030, 0x201E, 0x201C, 0x201D, 0x2018, 0x2019, 0x201A, 0x2122, 0xFB01, 0xFB02, 0x141, 0x152, 0x160, 0x178, 0x17D, 0x131, 0x142, 0x153, 0x161, 0x17E, 0, 0x20AC];
function stringToPDFString(str) {
const length = str.length,
strBuf = [];
if (str[0] === "\xFE" && str[1] === "\xFF") {
for (let i = 2; i < length; i += 2) {
strBuf.push(String.fromCharCode(str.charCodeAt(i) << 8 | str.charCodeAt(i + 1)));
}
} else if (str[0] === "\xFF" && str[1] === "\xFE") {
for (let i = 2; i < length; i += 2) {
strBuf.push(String.fromCharCode(str.charCodeAt(i + 1) << 8 | str.charCodeAt(i)));
}
} else {
for (let i = 0; i < length; ++i) {
const code = PDFStringTranslateTable[str.charCodeAt(i)];
strBuf.push(code ? String.fromCharCode(code) : str.charAt(i));
}
}
return strBuf.join("");
}
function escapeString(str) {
return str.replace(/([\(\)\\])/g, "\\$1");
}
function stringToUTF8String(str) {
return decodeURIComponent(escape(str));
}
function utf8StringToString(str) {
return unescape(encodeURIComponent(str));
}
function isBool(v) {
return typeof v === "boolean";
}
function isNum(v) {
return typeof v === "number";
}
function isString(v) {
return typeof v === "string";
}
function isArrayBuffer(v) {
return typeof v === "object" && v !== null && v.byteLength !== undefined;
}
function isArrayEqual(arr1, arr2) {
if (arr1.length !== arr2.length) {
return false;
}
return arr1.every(function (element, index) {
return element === arr2[index];
});
}
function getModificationDate(date = new Date()) {
const buffer = [date.getUTCFullYear().toString(), (date.getUTCMonth() + 1).toString().padStart(2, "0"), date.getUTCDate().toString().padStart(2, "0"), date.getUTCHours().toString().padStart(2, "0"), date.getUTCMinutes().toString().padStart(2, "0"), date.getUTCSeconds().toString().padStart(2, "0")];
return buffer.join("");
}
function createPromiseCapability() {
const capability = Object.create(null);
let isSettled = false;
Object.defineProperty(capability, "settled", {
get() {
return isSettled;
}
});
capability.promise = new Promise(function (resolve, reject) {
capability.resolve = function (data) {
isSettled = true;
resolve(data);
};
capability.reject = function (reason) {
isSettled = true;
reject(reason);
};
});
return capability;
}
const createObjectURL = function createObjectURLClosure() {
const digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
return function createObjectURL(data, contentType, forceDataSchema = false) {
if (!forceDataSchema && URL.createObjectURL) {
const blob = new Blob([data], {
type: contentType
});
return URL.createObjectURL(blob);
}
let buffer = `data:${contentType};base64,`;
for (let i = 0, ii = data.length; i < ii; i += 3) {
const b1 = data[i] & 0xff;
const b2 = data[i + 1] & 0xff;
const b3 = data[i + 2] & 0xff;
const d1 = b1 >> 2,
d2 = (b1 & 3) << 4 | b2 >> 4;
const d3 = i + 1 < ii ? (b2 & 0xf) << 2 | b3 >> 6 : 64;
const d4 = i + 2 < ii ? b3 & 0x3f : 64;
buffer += digits[d1] + digits[d2] + digits[d3] + digits[d4];
}
return buffer;
};
}();
exports.createObjectURL = createObjectURL;
const XMLEntities = {
0x3c: "<",
0x3e: ">",
0x26: "&",
0x22: """,
0x27: "'"
};
function encodeToXmlString(str) {
const buffer = [];
let start = 0;
for (let i = 0, ii = str.length; i < ii; i++) {
const char = str.codePointAt(i);
if (0x20 <= char && char <= 0x7e) {
const entity = XMLEntities[char];
if (entity) {
if (start < i) {
buffer.push(str.substring(start, i));
}
buffer.push(entity);
start = i + 1;
}
} else {
if (start < i) {
buffer.push(str.substring(start, i));
}
buffer.push(`&#x${char.toString(16).toUpperCase()};`);
if (char > 0xd7ff && (char < 0xe000 || char > 0xfffd)) {
i++;
}
start = i + 1;
}
}
if (buffer.length === 0) {
return str;
}
if (start < str.length) {
buffer.push(str.substring(start, str.length));
}
return buffer.join("");
}
/***/ }),
/* 2 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
var _is_node = __w_pdfjs_require__(3);
;
/***/ }),
/* 3 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.isNodeJS = void 0;
const isNodeJS = typeof process === "object" && process + "" === "[object process]" && !process.versions.nw && !(process.versions.electron && process.type && process.type !== "browser");
exports.isNodeJS = isNodeJS;
/***/ }),
/* 4 */
/***/ (function(module, exports, __w_pdfjs_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.Jbig2Image = void 0;
var _util = __w_pdfjs_require__(1);
var _core_utils = __w_pdfjs_require__(5);
var _arithmetic_decoder = __w_pdfjs_require__(6);
var _ccitt = __w_pdfjs_require__(7);
class Jbig2Error extends _util.BaseException {
constructor(msg) {
super(`JBIG2 error: ${msg}`);
}
}
var Jbig2Image = function Jbig2ImageClosure() {
function ContextCache() {}
ContextCache.prototype = {
getContexts(id) {
if (id in this) {
return this[id];
}
return this[id] = new Int8Array(1 << 16);
}
};
function DecodingContext(data, start, end) {
this.data = data;
this.start = start;
this.end = end;
}
DecodingContext.prototype = {
get decoder() {
var decoder = new _arithmetic_decoder.ArithmeticDecoder(this.data, this.start, this.end);
return (0, _util.shadow)(this, "decoder", decoder);
},
get contextCache() {
var cache = new ContextCache();
return (0, _util.shadow)(this, "contextCache", cache);
}
};
function decodeInteger(contextCache, procedure, decoder) {
var contexts = contextCache.getContexts(procedure);
var prev = 1;
function readBits(length) {
var v = 0;
for (var i = 0; i < length; i++) {
var bit = decoder.readBit(contexts, prev);
prev = prev < 256 ? prev << 1 | bit : (prev << 1 | bit) & 511 | 256;
v = v << 1 | bit;
}
return v >>> 0;
}
var sign = readBits(1);
var value = readBits(1) ? readBits(1) ? readBits(1) ? readBits(1) ? readBits(1) ? readBits(32) + 4436 : readBits(12) + 340 : readBits(8) + 84 : readBits(6) + 20 : readBits(4) + 4 : readBits(2);
if (sign === 0) {
return value;
} else if (value > 0) {
return -value;
}
return null;
}
function decodeIAID(contextCache, decoder, codeLength) {
var contexts = contextCache.getContexts("IAID");
var prev = 1;
for (var i = 0; i < codeLength; i++) {
var bit = decoder.readBit(contexts, prev);
prev = prev << 1 | bit;
}
if (codeLength < 31) {
return prev & (1 << codeLength) - 1;
}
return prev & 0x7fffffff;
}
var SegmentTypes = ["SymbolDictionary", null, null, null, "IntermediateTextRegion", null, "ImmediateTextRegion", "ImmediateLosslessTextRegion", null, null, null, null, null, null, null, null, "PatternDictionary", null, null, null, "IntermediateHalftoneRegion", null, "ImmediateHalftoneRegion", "ImmediateLosslessHalftoneRegion", null, null, null, null, null, null, null, null, null, null, null, null, "IntermediateGenericRegion", null, "ImmediateGenericRegion", "ImmediateLosslessGenericRegion", "IntermediateGenericRefinementRegion", null, "ImmediateGenericRefinementRegion", "ImmediateLosslessGenericRefinementRegion", null, null, null, null, "PageInformation", "EndOfPage", "EndOfStripe", "EndOfFile", "Profiles", "Tables", null, null, null, null, null, null, null, null, "Extension"];
var CodingTemplates = [[{
x: -1,
y: -2
}, {
x: 0,
y: -2
}, {
x: 1,
y: -2
}, {
x: -2,
y: -1
}, {
x: -1,
y: -1
}, {
x: 0,
y: -1
}, {
x: 1,
y: -1
}, {
x: 2,
y: -1
}, {
x: -4,
y: 0
}, {
x: -3,
y: 0
}, {
x: -2,
y: 0
}, {
x: -1,
y: 0
}], [{
x: -1,
y: -2
}, {
x: 0,
y: -2
}, {
x: 1,
y: -2
}, {
x: 2,
y: -2
}, {
x: -2,
y: -1
}, {
x: -1,
y: -1
}, {
x: 0,
y: -1
}, {
x: 1,
y: -1
}, {
x: 2,
y: -1
}, {
x: -3,
y: 0
}, {
x: -2,
y: 0
}, {
x: -1,
y: 0
}], [{
x: -1,
y: -2
}, {
x: 0,
y: -2
}, {
x: 1,
y: -2
}, {
x: -2,
y: -1
}, {
x: -1,
y: -1
}, {
x: 0,
y: -1
}, {
x: 1,
y: -1
}, {
x: -2,
y: 0
}, {
x: -1,
y: 0
}], [{
x: -3,
y: -1
}, {
x: -2,
y: -1
}, {
x: -1,
y: -1
}, {
x: 0,
y: -1
}, {
x: 1,
y: -1
}, {
x: -4,
y: 0
}, {
x: -3,
y: 0
}, {
x: -2,
y: 0
}, {
x: -1,
y: 0
}]];
var RefinementTemplates = [{
coding: [{
x: 0,
y: -1
}, {
x: 1,
y: -1
}, {
x: -1,
y: 0
}],
reference: [{
x: 0,
y: -1
}, {
x: 1,
y: -1
}, {
x: -1,
y: 0
}, {
x: 0,
y: 0
}, {
x: 1,
y: 0
}, {
x: -1,
y: 1
}, {
x: 0,
y: 1
}, {
x: 1,
y: 1
}]
}, {
coding: [{
x: -1,
y: -1
}, {
x: 0,
y: -1
}, {
x: 1,
y: -1
}, {
x: -1,
y: 0
}],
reference: [{
x: 0,
y: -1
}, {
x: -1,
y: 0
}, {
x: 0,
y: 0
}, {
x: 1,
y: 0
}, {
x: 0,
y: 1
}, {
x: 1,
y: 1
}]
}];
var ReusedContexts = [0x9b25, 0x0795, 0x00e5, 0x0195];
var RefinementReusedContexts = [0x0020, 0x0008];
function decodeBitmapTemplate0(width, height, decodingContext) {
var decoder = decodingContext.decoder;
var contexts = decodingContext.contextCache.getContexts("GB");
var contextLabel,
i,
j,
pixel,
row,
row1,
row2,
bitmap = [];
var OLD_PIXEL_MASK = 0x7bf7;
for (i = 0; i < height; i++) {
row = bitmap[i] = new Uint8Array(width);
row1 = i < 1 ? row : bitmap[i - 1];
row2 = i < 2 ? row : bitmap[i - 2];
contextLabel = row2[0] << 13 | row2[1] << 12 | row2[2] << 11 | row1[0] << 7 | row1[1] << 6 | row1[2] << 5 | row1[3] << 4;
for (j = 0; j < width; j++) {
row[j] = pixel = decoder.readBit(contexts, contextLabel);
contextLabel = (contextLabel & OLD_PIXEL_MASK) << 1 | (j + 3 < width ? row2[j + 3] << 11 : 0) | (j + 4 < width ? row1[j + 4] << 4 : 0) | pixel;
}
}
return bitmap;
}
function decodeBitmap(mmr, width, height, templateIndex, prediction, skip, at, decodingContext) {
if (mmr) {
const input = new Reader(decodingContext.data, decodingContext.start, decodingContext.end);
return decodeMMRBitmap(input, width, height, false);
}
if (templateIndex === 0 && !skip && !prediction && at.length === 4 && at[0].x === 3 && at[0].y === -1 && at[1].x === -3 && at[1].y === -1 && at[2].x === 2 && at[2].y === -2 && at[3].x === -2 && at[3].y === -2) {
return decodeBitmapTemplate0(width, height, decodingContext);
}
var useskip = !!skip;
var template = CodingTemplates[templateIndex].concat(at);
template.sort(function (a, b) {
return a.y - b.y || a.x - b.x;
});
var templateLength = template.length;
var templateX = new Int8Array(templateLength);
var templateY = new Int8Array(templateLength);
var changingTemplateEntries = [];
var reuseMask = 0,
minX = 0,
maxX = 0,
minY = 0;
var c, k;
for (k = 0; k < templateLength; k++) {
templateX[k] = template[k].x;
templateY[k] = template[k].y;
minX = Math.min(minX, template[k].x);
maxX = Math.max(maxX, template[k].x);
minY = Math.min(minY, template[k].y);
if (k < templateLength - 1 && template[k].y === template[k + 1].y && template[k].x === template[k + 1].x - 1) {
reuseMask |= 1 << templateLength - 1 - k;
} else {
changingTemplateEntries.push(k);
}
}
var changingEntriesLength = changingTemplateEntries.length;
var changingTemplateX = new Int8Array(changingEntriesLength);
var changingTemplateY = new Int8Array(changingEntriesLength);
var changingTemplateBit = new Uint16Array(changingEntriesLength);
for (c = 0; c < changingEntriesLength; c++) {
k = changingTemplateEntries[c];
changingTemplateX[c] = template[k].x;
changingTemplateY[c] = template[k].y;
changingTemplateBit[c] = 1 << templateLength - 1 - k;
}
var sbb_left = -minX;
var sbb_top = -minY;
var sbb_right = width - maxX;
var pseudoPixelContext = ReusedContexts[templateIndex];
var row = new Uint8Array(width);
var bitmap = [];
var decoder = decodingContext.decoder;
var contexts = decodingContext.contextCache.getContexts("GB");
var ltp = 0,
j,
i0,
j0,
contextLabel = 0,
bit,
shift;
for (var i = 0; i < height; i++) {
if (prediction) {
var sltp = decoder.readBit(contexts, pseudoPixelContext);
ltp ^= sltp;
if (ltp) {
bitmap.push(row);
continue;
}
}
row = new Uint8Array(row);
bitmap.push(row);
for (j = 0; j < width; j++) {
if (useskip && skip[i][j]) {
row[j] = 0;
continue;
}
if (j >= sbb_left && j < sbb_right && i >= sbb_top) {
contextLabel = contextLabel << 1 & reuseMask;
for (k = 0; k < changingEntriesLength; k++) {
i0 = i + changingTemplateY[k];
j0 = j + changingTemplateX[k];
bit = bitmap[i0][j0];
if (bit) {
bit = changingTemplateBit[k];
contextLabel |= bit;
}
}
} else {
contextLabel = 0;
shift = templateLength - 1;
for (k = 0; k < templateLength; k++, shift--) {
j0 = j + templateX[k];
if (j0 >= 0 && j0 < width) {
i0 = i + templateY[k];
if (i0 >= 0) {
bit = bitmap[i0][j0];
if (bit) {
contextLabel |= bit << shift;
}
}
}
}
}
var pixel = decoder.readBit(contexts, contextLabel);
row[j] = pixel;
}
}
return bitmap;
}
function decodeRefinement(width, height, templateIndex, referenceBitmap, offsetX, offsetY, prediction, at, decodingContext) {
var codingTemplate = RefinementTemplates[templateIndex].coding;
if (templateIndex === 0) {
codingTemplate = codingTemplate.concat([at[0]]);
}
var codingTemplateLength = codingTemplate.length;
var codingTemplateX = new Int32Array(codingTemplateLength);
var codingTemplateY = new Int32Array(codingTemplateLength);
var k;
for (k = 0; k < codingTemplateLength; k++) {
codingTemplateX[k] = codingTemplate[k].x;
codingTemplateY[k] = codingTemplate[k].y;
}
var referenceTemplate = RefinementTemplates[templateIndex].reference;
if (templateIndex === 0) {
referenceTemplate = referenceTemplate.concat([at[1]]);
}
var referenceTemplateLength = referenceTemplate.length;
var referenceTemplateX = new Int32Array(referenceTemplateLength);
var referenceTemplateY = new Int32Array(referenceTemplateLength);
for (k = 0; k < referenceTemplateLength; k++) {
referenceTemplateX[k] = referenceTemplate[k].x;
referenceTemplateY[k] = referenceTemplate[k].y;
}
var referenceWidth = referenceBitmap[0].length;
var referenceHeight = referenceBitmap.length;
var pseudoPixelContext = RefinementReusedContexts[templateIndex];
var bitmap = [];
var decoder = decodingContext.decoder;
var contexts = decodingContext.contextCache.getContexts("GR");
var ltp = 0;
for (var i = 0; i < height; i++) {
if (prediction) {
var sltp = decoder.readBit(contexts, pseudoPixelContext);
ltp ^= sltp;
if (ltp) {
throw new Jbig2Error("prediction is not supported");
}
}
var row = new Uint8Array(width);
bitmap.push(row);
for (var j = 0; j < width; j++) {
var i0, j0;
var contextLabel = 0;
for (k = 0; k < codingTemplateLength; k++) {
i0 = i + codingTemplateY[k];
j0 = j + codingTemplateX[k];
if (i0 < 0 || j0 < 0 || j0 >= width) {
contextLabel <<= 1;
} else {
contextLabel = contextLabel << 1 | bitmap[i0][j0];
}
}
for (k = 0; k < referenceTemplateLength; k++) {
i0 = i + referenceTemplateY[k] - offsetY;
j0 = j + referenceTemplateX[k] - offsetX;
if (i0 < 0 || i0 >= referenceHeight || j0 < 0 || j0 >= referenceWidth) {
contextLabel <<= 1;
} else {
contextLabel = contextLabel << 1 | referenceBitmap[i0][j0];
}
}
var pixel = decoder.readBit(contexts, contextLabel);
row[j] = pixel;
}
}
return bitmap;
}
function decodeSymbolDictionary(huffman, refinement, symbols, numberOfNewSymbols, numberOfExportedSymbols, huffmanTables, templateIndex, at, refinementTemplateIndex, refinementAt, decodingContext, huffmanInput) {
if (huffman && refinement) {
throw new Jbig2Error("symbol refinement with Huffman is not supported");
}
var newSymbols = [];
var currentHeight = 0;
var symbolCodeLength = (0, _core_utils.log2)(symbols.length + numberOfNewSymbols);
var decoder = decodingContext.decoder;
var contextCache = decodingContext.contextCache;
let tableB1, symbolWidths;
if (huffman) {
tableB1 = getStandardTable(1);
symbolWidths = [];
symbolCodeLength = Math.max(symbolCodeLength, 1);
}
while (newSymbols.length < numberOfNewSymbols) {
var deltaHeight = huffman ? huffmanTables.tableDeltaHeight.decode(huffmanInput) : decodeInteger(contextCache, "IADH", decoder);
currentHeight += deltaHeight;
let currentWidth = 0,
totalWidth = 0;
const firstSymbol = huffman ? symbolWidths.length : 0;
while (true) {
var deltaWidth = huffman ? huffmanTables.tableDeltaWidth.decode(huffmanInput) : decodeInteger(contextCache, "IADW", decoder);
if (deltaWidth === null) {
break;
}
currentWidth += deltaWidth;
totalWidth += currentWidth;
var bitmap;
if (refinement) {
var numberOfInstances = decodeInteger(contextCache, "IAAI", decoder);
if (numberOfInstances > 1) {
bitmap = decodeTextRegion(huffman, refinement, currentWidth, currentHeight, 0, numberOfInstances, 1, symbols.concat(newSymbols), symbolCodeLength, 0, 0, 1, 0, huffmanTables, refinementTemplateIndex, refinementAt, decodingContext, 0, huffmanInput);
} else {
var symbolId = decodeIAID(contextCache, decoder, symbolCodeLength);
var rdx = decodeInteger(contextCache, "IARDX", decoder);
var rdy = decodeInteger(contextCache, "IARDY", decoder);
var symbol = symbolId < symbols.length ? symbols[symbolId] : newSymbols[symbolId - symbols.length];
bitmap = decodeRefinement(currentWidth, currentHeight, refinementTemplateIndex, symbol, rdx, rdy, false, refinementAt, decodingContext);
}
newSymbols.push(bitmap);
} else if (huffman) {
symbolWidths.push(currentWidth);
} else {
bitmap = decodeBitmap(false, currentWidth, currentHeight, templateIndex, false, null, at, decodingContext);
newSymbols.push(bitmap);
}
}
if (huffman && !refinement) {
const bitmapSize = huffmanTables.tableBitmapSize.decode(huffmanInput);
huffmanInput.byteAlign();
let collectiveBitmap;
if (bitmapSize === 0) {
collectiveBitmap = readUncompressedBitmap(huffmanInput, totalWidth, currentHeight);
} else {
const originalEnd = huffmanInput.end;
const bitmapEnd = huffmanInput.position + bitmapSize;
huffmanInput.end = bitmapEnd;
collectiveBitmap = decodeMMRBitmap(huffmanInput, totalWidth, currentHeight, false);
huffmanInput.end = originalEnd;
huffmanInput.position = bitmapEnd;
}
const numberOfSymbolsDecoded = symbolWidths.length;
if (firstSymbol === numberOfSymbolsDecoded - 1) {
newSymbols.push(collectiveBitmap);
} else {
let i,
y,
xMin = 0,
xMax,
bitmapWidth,
symbolBitmap;
for (i = firstSymbol; i < numberOfSymbolsDecoded; i++) {
bitmapWidth = symbolWidths[i];
xMax = xMin + bitmapWidth;
symbolBitmap = [];
for (y = 0; y < currentHeight; y++) {
symbolBitmap.push(collectiveBitmap[y].subarray(xMin, xMax));
}
newSymbols.push(symbolBitmap);
xMin = xMax;
}
}
}
}
var exportedSymbols = [];
var flags = [],
currentFlag = false;
var totalSymbolsLength = symbols.length + numberOfNewSymbols;
while (flags.length < totalSymbolsLength) {
var runLength = huffman ? tableB1.decode(huffmanInput) : decodeInteger(contextCache, "IAEX", decoder);
while (runLength--) {
flags.push(currentFlag);
}
currentFlag = !currentFlag;
}
for (var i = 0, ii = symbols.length; i < ii; i++) {
if (flags[i]) {
exportedSymbols.push(symbols[i]);
}
}
for (var j = 0; j < numberOfNewSymbols; i++, j++) {
if (flags[i]) {
exportedSymbols.push(newSymbols[j]);
}
}
return exportedSymbols;
}
function decodeTextRegion(huffman, refinement, width, height, defaultPixelValue, numberOfSymbolInstances, stripSize, inputSymbols, symbolCodeLength, transposed, dsOffset, referenceCorner, combinationOperator, huffmanTables, refinementTemplateIndex, refinementAt, decodingContext, logStripSize, huffmanInput) {
if (huffman && refinement) {
throw new Jbig2Error("refinement with Huffman is not supported");
}
var bitmap = [];
var i, row;
for (i = 0; i < height; i++) {
row = new Uint8Array(width);
if (defaultPixelValue) {
for (var j = 0; j < width; j++) {
row[j] = defaultPixelValue;
}
}
bitmap.push(row);
}
var decoder = decodingContext.decoder;
var contextCache = decodingContext.contextCache;
var stripT = huffman ? -huffmanTables.tableDeltaT.decode(huffmanInput) : -decodeInteger(contextCache, "IADT", decoder);
var firstS = 0;
i = 0;
while (i < numberOfSymbolInstances) {
var deltaT = huffman ? huffmanTables.tableDeltaT.decode(huffmanInput) : decodeInteger(contextCache, "IADT", decoder);
stripT += deltaT;
var deltaFirstS = huffman ? huffmanTables.tableFirstS.decode(huffmanInput) : decodeInteger(contextCache, "IAFS", decoder);
firstS += deltaFirstS;
var currentS = firstS;
do {
let currentT = 0;
if (stripSize > 1) {
currentT = huffman ? huffmanInput.readBits(logStripSize) : decodeInteger(contextCache, "IAIT", decoder);
}
var t = stripSize * stripT + currentT;
var symbolId = huffman ? huffmanTables.symbolIDTable.decode(huffmanInput) : decodeIAID(contextCache, decoder, symbolCodeLength);
var applyRefinement = refinement && (huffman ? huffmanInput.readBit() : decodeInteger(contextCache, "IARI", decoder));
var symbolBitmap = inputSymbols[symbolId];
var symbolWidth = symbolBitmap[0].length;
var symbolHeight = symbolBitmap.length;
if (applyRefinement) {
var rdw = decodeInteger(contextCache, "IARDW", decoder);
var rdh = decodeInteger(contextCache, "IARDH", decoder);
var rdx = decodeInteger(contextCache, "IARDX", decoder);
var rdy = decodeInteger(contextCache, "IARDY", decoder);
symbolWidth += rdw;
symbolHeight += rdh;
symbolBitmap = decodeRefinement(symbolWidth, symbolHeight, refinementTemplateIndex, symbolBitmap, (rdw >> 1) + rdx, (rdh >> 1) + rdy, false, refinementAt, decodingContext);
}
var offsetT = t - (referenceCorner & 1 ? 0 : symbolHeight - 1);
var offsetS = currentS - (referenceCorner & 2 ? symbolWidth - 1 : 0);
var s2, t2, symbolRow;
if (transposed) {
for (s2 = 0; s2 < symbolHeight; s2++) {
row = bitmap[offsetS + s2];
if (!row) {
continue;
}
symbolRow = symbolBitmap[s2];
var maxWidth = Math.min(width - offsetT, symbolWidth);
switch (combinationOperator) {
case 0:
for (t2 = 0; t2 < maxWidth; t2++) {
row[offsetT + t2] |= symbolRow[t2];
}
break;
case 2:
for (t2 = 0; t2 < maxWidth; t2++) {
row[offsetT + t2] ^= symbolRow[t2];
}
break;
default:
throw new Jbig2Error(`operator ${combinationOperator} is not supported`);
}
}
currentS += symbolHeight - 1;
} else {
for (t2 = 0; t2 < symbolHeight; t2++) {
row = bitmap[offsetT + t2];
if (!row) {
continue;
}
symbolRow = symbolBitmap[t2];
switch (combinationOperator) {
case 0: