1612 lines
42 KiB
JavaScript
1612 lines
42 KiB
JavaScript
/**
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* @licstart The following is the entire license notice for the
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* JavaScript code in this page
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*
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* Copyright 2022 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @licend The above is the entire license notice for the
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* JavaScript code in this page
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*/
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.Page = exports.PDFDocument = void 0;
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var _annotation = require("./annotation.js");
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var _util = require("../shared/util.js");
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var _core_utils = require("./core_utils.js");
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var _primitives = require("./primitives.js");
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var _xfa_fonts = require("./xfa_fonts.js");
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var _base_stream = require("./base_stream.js");
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var _crypto = require("./crypto.js");
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var _catalog = require("./catalog.js");
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var _cleanup_helper = require("./cleanup_helper.js");
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var _dataset_reader = require("./dataset_reader.js");
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var _parser = require("./parser.js");
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var _stream = require("./stream.js");
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var _object_loader = require("./object_loader.js");
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var _operator_list = require("./operator_list.js");
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var _evaluator = require("./evaluator.js");
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var _decode_stream = require("./decode_stream.js");
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var _struct_tree = require("./struct_tree.js");
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var _writer = require("./writer.js");
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var _factory = require("./xfa/factory.js");
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var _xref = require("./xref.js");
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const DEFAULT_USER_UNIT = 1.0;
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const LETTER_SIZE_MEDIABOX = [0, 0, 612, 792];
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class Page {
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constructor({
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pdfManager,
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xref,
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pageIndex,
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pageDict,
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ref,
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globalIdFactory,
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fontCache,
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builtInCMapCache,
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standardFontDataCache,
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globalImageCache,
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nonBlendModesSet,
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xfaFactory
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}) {
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this.pdfManager = pdfManager;
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this.pageIndex = pageIndex;
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this.pageDict = pageDict;
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this.xref = xref;
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this.ref = ref;
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this.fontCache = fontCache;
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this.builtInCMapCache = builtInCMapCache;
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this.standardFontDataCache = standardFontDataCache;
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this.globalImageCache = globalImageCache;
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this.nonBlendModesSet = nonBlendModesSet;
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this.evaluatorOptions = pdfManager.evaluatorOptions;
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this.resourcesPromise = null;
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this.xfaFactory = xfaFactory;
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const idCounters = {
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obj: 0
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};
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this._localIdFactory = class extends globalIdFactory {
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static createObjId() {
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return `p${pageIndex}_${++idCounters.obj}`;
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}
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static getPageObjId() {
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return `page${ref.toString()}`;
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}
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};
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}
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_getInheritableProperty(key, getArray = false) {
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const value = (0, _core_utils.getInheritableProperty)({
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dict: this.pageDict,
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key,
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getArray,
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stopWhenFound: false
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});
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if (!Array.isArray(value)) {
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return value;
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}
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if (value.length === 1 || !(value[0] instanceof _primitives.Dict)) {
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return value[0];
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}
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return _primitives.Dict.merge({
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xref: this.xref,
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dictArray: value
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});
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}
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get content() {
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return this.pageDict.getArray("Contents");
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}
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get resources() {
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const resources = this._getInheritableProperty("Resources");
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return (0, _util.shadow)(this, "resources", resources instanceof _primitives.Dict ? resources : _primitives.Dict.empty);
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}
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_getBoundingBox(name) {
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if (this.xfaData) {
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return this.xfaData.bbox;
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}
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const box = this._getInheritableProperty(name, true);
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if (Array.isArray(box) && box.length === 4) {
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if (box[2] - box[0] !== 0 && box[3] - box[1] !== 0) {
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return box;
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}
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(0, _util.warn)(`Empty /${name} entry.`);
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}
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return null;
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}
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get mediaBox() {
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return (0, _util.shadow)(this, "mediaBox", this._getBoundingBox("MediaBox") || LETTER_SIZE_MEDIABOX);
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}
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get cropBox() {
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return (0, _util.shadow)(this, "cropBox", this._getBoundingBox("CropBox") || this.mediaBox);
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}
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get userUnit() {
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let obj = this.pageDict.get("UserUnit");
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if (typeof obj !== "number" || obj <= 0) {
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obj = DEFAULT_USER_UNIT;
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}
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return (0, _util.shadow)(this, "userUnit", obj);
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}
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get view() {
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const {
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cropBox,
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mediaBox
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} = this;
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let view;
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if (cropBox === mediaBox || (0, _util.isArrayEqual)(cropBox, mediaBox)) {
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view = mediaBox;
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} else {
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const box = _util.Util.intersect(cropBox, mediaBox);
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if (box && box[2] - box[0] !== 0 && box[3] - box[1] !== 0) {
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view = box;
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} else {
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(0, _util.warn)("Empty /CropBox and /MediaBox intersection.");
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}
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}
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return (0, _util.shadow)(this, "view", view || mediaBox);
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}
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get rotate() {
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let rotate = this._getInheritableProperty("Rotate") || 0;
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if (rotate % 90 !== 0) {
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rotate = 0;
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} else if (rotate >= 360) {
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rotate %= 360;
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} else if (rotate < 0) {
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rotate = (rotate % 360 + 360) % 360;
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}
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return (0, _util.shadow)(this, "rotate", rotate);
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}
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_onSubStreamError(handler, reason, objId) {
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if (this.evaluatorOptions.ignoreErrors) {
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handler.send("UnsupportedFeature", {
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featureId: _util.UNSUPPORTED_FEATURES.errorContentSubStream
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});
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(0, _util.warn)(`getContentStream - ignoring sub-stream (${objId}): "${reason}".`);
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return;
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}
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throw reason;
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}
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getContentStream(handler) {
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return this.pdfManager.ensure(this, "content").then(content => {
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if (content instanceof _base_stream.BaseStream) {
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return content;
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}
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if (Array.isArray(content)) {
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return new _decode_stream.StreamsSequenceStream(content, this._onSubStreamError.bind(this, handler));
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}
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return new _stream.NullStream();
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});
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}
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get xfaData() {
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return (0, _util.shadow)(this, "xfaData", this.xfaFactory ? {
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bbox: this.xfaFactory.getBoundingBox(this.pageIndex)
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} : null);
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}
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async saveNewAnnotations(handler, task, annotations) {
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if (this.xfaFactory) {
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throw new Error("XFA: Cannot save new annotations.");
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}
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const partialEvaluator = new _evaluator.PartialEvaluator({
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xref: this.xref,
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handler,
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pageIndex: this.pageIndex,
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idFactory: this._localIdFactory,
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fontCache: this.fontCache,
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builtInCMapCache: this.builtInCMapCache,
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standardFontDataCache: this.standardFontDataCache,
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globalImageCache: this.globalImageCache,
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options: this.evaluatorOptions
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});
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const pageDict = this.pageDict;
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const annotationsArray = this.annotations.slice();
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const newData = await _annotation.AnnotationFactory.saveNewAnnotations(partialEvaluator, task, annotations);
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for (const {
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ref
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} of newData.annotations) {
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annotationsArray.push(ref);
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}
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const savedDict = pageDict.get("Annots");
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pageDict.set("Annots", annotationsArray);
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const buffer = [];
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let transform = null;
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if (this.xref.encrypt) {
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transform = this.xref.encrypt.createCipherTransform(this.ref.num, this.ref.gen);
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}
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(0, _writer.writeObject)(this.ref, pageDict, buffer, transform);
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if (savedDict) {
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pageDict.set("Annots", savedDict);
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}
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const objects = newData.dependencies;
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objects.push({
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ref: this.ref,
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data: buffer.join("")
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}, ...newData.annotations);
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return objects;
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}
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save(handler, task, annotationStorage) {
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const partialEvaluator = new _evaluator.PartialEvaluator({
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xref: this.xref,
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handler,
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pageIndex: this.pageIndex,
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idFactory: this._localIdFactory,
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fontCache: this.fontCache,
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builtInCMapCache: this.builtInCMapCache,
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standardFontDataCache: this.standardFontDataCache,
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globalImageCache: this.globalImageCache,
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options: this.evaluatorOptions
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});
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return this._parsedAnnotations.then(function (annotations) {
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const newRefsPromises = [];
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for (const annotation of annotations) {
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if (!annotation.mustBePrinted(annotationStorage)) {
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continue;
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}
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newRefsPromises.push(annotation.save(partialEvaluator, task, annotationStorage).catch(function (reason) {
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(0, _util.warn)("save - ignoring annotation data during " + `"${task.name}" task: "${reason}".`);
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return null;
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}));
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}
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return Promise.all(newRefsPromises).then(function (newRefs) {
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return newRefs.filter(newRef => !!newRef);
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});
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});
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}
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loadResources(keys) {
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if (!this.resourcesPromise) {
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this.resourcesPromise = this.pdfManager.ensure(this, "resources");
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}
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return this.resourcesPromise.then(() => {
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const objectLoader = new _object_loader.ObjectLoader(this.resources, keys, this.xref);
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return objectLoader.load();
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});
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}
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getOperatorList({
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handler,
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sink,
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task,
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intent,
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cacheKey,
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annotationStorage = null
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}) {
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const contentStreamPromise = this.getContentStream(handler);
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const resourcesPromise = this.loadResources(["ColorSpace", "ExtGState", "Font", "Pattern", "Properties", "Shading", "XObject"]);
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const partialEvaluator = new _evaluator.PartialEvaluator({
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xref: this.xref,
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handler,
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pageIndex: this.pageIndex,
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idFactory: this._localIdFactory,
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fontCache: this.fontCache,
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builtInCMapCache: this.builtInCMapCache,
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standardFontDataCache: this.standardFontDataCache,
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globalImageCache: this.globalImageCache,
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options: this.evaluatorOptions
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});
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const newAnnotationsByPage = !this.xfaFactory ? (0, _core_utils.getNewAnnotationsMap)(annotationStorage) : null;
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let newAnnotationsPromise = Promise.resolve(null);
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if (newAnnotationsByPage) {
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const newAnnotations = newAnnotationsByPage.get(this.pageIndex);
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if (newAnnotations) {
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newAnnotationsPromise = _annotation.AnnotationFactory.printNewAnnotations(partialEvaluator, task, newAnnotations);
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}
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}
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const dataPromises = Promise.all([contentStreamPromise, resourcesPromise]);
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const pageListPromise = dataPromises.then(([contentStream]) => {
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const opList = new _operator_list.OperatorList(intent, sink);
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handler.send("StartRenderPage", {
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transparency: partialEvaluator.hasBlendModes(this.resources, this.nonBlendModesSet),
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pageIndex: this.pageIndex,
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cacheKey
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});
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return partialEvaluator.getOperatorList({
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stream: contentStream,
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task,
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resources: this.resources,
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operatorList: opList
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}).then(function () {
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return opList;
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});
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});
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return Promise.all([pageListPromise, this._parsedAnnotations, newAnnotationsPromise]).then(function ([pageOpList, annotations, newAnnotations]) {
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if (newAnnotations) {
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annotations = annotations.concat(newAnnotations);
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}
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if (annotations.length === 0 || intent & _util.RenderingIntentFlag.ANNOTATIONS_DISABLE) {
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pageOpList.flush(true);
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return {
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length: pageOpList.totalLength
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};
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}
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const renderForms = !!(intent & _util.RenderingIntentFlag.ANNOTATIONS_FORMS),
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intentAny = !!(intent & _util.RenderingIntentFlag.ANY),
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intentDisplay = !!(intent & _util.RenderingIntentFlag.DISPLAY),
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intentPrint = !!(intent & _util.RenderingIntentFlag.PRINT);
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const opListPromises = [];
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for (const annotation of annotations) {
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if (intentAny || intentDisplay && annotation.mustBeViewed(annotationStorage) || intentPrint && annotation.mustBePrinted(annotationStorage)) {
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opListPromises.push(annotation.getOperatorList(partialEvaluator, task, intent, renderForms, annotationStorage).catch(function (reason) {
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(0, _util.warn)("getOperatorList - ignoring annotation data during " + `"${task.name}" task: "${reason}".`);
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return null;
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}));
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}
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}
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return Promise.all(opListPromises).then(function (opLists) {
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let form = false,
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canvas = false;
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for (const {
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opList,
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separateForm,
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separateCanvas
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} of opLists) {
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pageOpList.addOpList(opList);
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if (separateForm) {
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form = separateForm;
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}
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if (separateCanvas) {
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canvas = separateCanvas;
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}
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}
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pageOpList.flush(true, {
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form,
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canvas
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});
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return {
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length: pageOpList.totalLength
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};
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});
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});
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}
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extractTextContent({
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handler,
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task,
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includeMarkedContent,
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sink,
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combineTextItems
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}) {
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const contentStreamPromise = this.getContentStream(handler);
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const resourcesPromise = this.loadResources(["ExtGState", "Font", "Properties", "XObject"]);
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const dataPromises = Promise.all([contentStreamPromise, resourcesPromise]);
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return dataPromises.then(([contentStream]) => {
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const partialEvaluator = new _evaluator.PartialEvaluator({
|
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xref: this.xref,
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handler,
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pageIndex: this.pageIndex,
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idFactory: this._localIdFactory,
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fontCache: this.fontCache,
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builtInCMapCache: this.builtInCMapCache,
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standardFontDataCache: this.standardFontDataCache,
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globalImageCache: this.globalImageCache,
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options: this.evaluatorOptions
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});
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return partialEvaluator.getTextContent({
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stream: contentStream,
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task,
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resources: this.resources,
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includeMarkedContent,
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combineTextItems,
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sink,
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viewBox: this.view
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});
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});
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}
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async getStructTree() {
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const structTreeRoot = await this.pdfManager.ensureCatalog("structTreeRoot");
|
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|
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if (!structTreeRoot) {
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return null;
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}
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const structTree = await this.pdfManager.ensure(this, "_parseStructTree", [structTreeRoot]);
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return structTree.serializable;
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}
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_parseStructTree(structTreeRoot) {
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const tree = new _struct_tree.StructTreePage(structTreeRoot, this.pageDict);
|
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tree.parse();
|
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return tree;
|
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}
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async getAnnotationsData(handler, task, intent) {
|
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const annotations = await this._parsedAnnotations;
|
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|
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if (annotations.length === 0) {
|
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return [];
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}
|
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|
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const textContentPromises = [];
|
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const annotationsData = [];
|
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let partialEvaluator;
|
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const intentAny = !!(intent & _util.RenderingIntentFlag.ANY),
|
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intentDisplay = !!(intent & _util.RenderingIntentFlag.DISPLAY),
|
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intentPrint = !!(intent & _util.RenderingIntentFlag.PRINT);
|
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|
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for (const annotation of annotations) {
|
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const isVisible = intentAny || intentDisplay && annotation.viewable;
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if (isVisible || intentPrint && annotation.printable) {
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annotationsData.push(annotation.data);
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}
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if (annotation.hasTextContent && isVisible) {
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if (!partialEvaluator) {
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partialEvaluator = new _evaluator.PartialEvaluator({
|
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xref: this.xref,
|
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handler,
|
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pageIndex: this.pageIndex,
|
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idFactory: this._localIdFactory,
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fontCache: this.fontCache,
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builtInCMapCache: this.builtInCMapCache,
|
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standardFontDataCache: this.standardFontDataCache,
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globalImageCache: this.globalImageCache,
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options: this.evaluatorOptions
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});
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}
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textContentPromises.push(annotation.extractTextContent(partialEvaluator, task, this.view).catch(function (reason) {
|
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(0, _util.warn)(`getAnnotationsData - ignoring textContent during "${task.name}" task: "${reason}".`);
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}));
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}
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}
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await Promise.all(textContentPromises);
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return annotationsData;
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}
|
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|
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get annotations() {
|
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const annots = this._getInheritableProperty("Annots");
|
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|
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return (0, _util.shadow)(this, "annotations", Array.isArray(annots) ? annots : []);
|
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}
|
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|
|
get _parsedAnnotations() {
|
|
const parsedAnnotations = this.pdfManager.ensure(this, "annotations").then(() => {
|
|
const annotationPromises = [];
|
|
|
|
for (const annotationRef of this.annotations) {
|
|
annotationPromises.push(_annotation.AnnotationFactory.create(this.xref, annotationRef, this.pdfManager, this._localIdFactory, false).catch(function (reason) {
|
|
(0, _util.warn)(`_parsedAnnotations: "${reason}".`);
|
|
return null;
|
|
}));
|
|
}
|
|
|
|
return Promise.all(annotationPromises).then(function (annotations) {
|
|
if (annotations.length === 0) {
|
|
return annotations;
|
|
}
|
|
|
|
const sortedAnnotations = [];
|
|
let popupAnnotations;
|
|
|
|
for (const annotation of annotations) {
|
|
if (!annotation) {
|
|
continue;
|
|
}
|
|
|
|
if (annotation instanceof _annotation.PopupAnnotation) {
|
|
if (!popupAnnotations) {
|
|
popupAnnotations = [];
|
|
}
|
|
|
|
popupAnnotations.push(annotation);
|
|
continue;
|
|
}
|
|
|
|
sortedAnnotations.push(annotation);
|
|
}
|
|
|
|
if (popupAnnotations) {
|
|
sortedAnnotations.push(...popupAnnotations);
|
|
}
|
|
|
|
return sortedAnnotations;
|
|
});
|
|
});
|
|
return (0, _util.shadow)(this, "_parsedAnnotations", parsedAnnotations);
|
|
}
|
|
|
|
get jsActions() {
|
|
const actions = (0, _core_utils.collectActions)(this.xref, this.pageDict, _util.PageActionEventType);
|
|
return (0, _util.shadow)(this, "jsActions", actions);
|
|
}
|
|
|
|
}
|
|
|
|
exports.Page = Page;
|
|
const PDF_HEADER_SIGNATURE = new Uint8Array([0x25, 0x50, 0x44, 0x46, 0x2d]);
|
|
const STARTXREF_SIGNATURE = new Uint8Array([0x73, 0x74, 0x61, 0x72, 0x74, 0x78, 0x72, 0x65, 0x66]);
|
|
const ENDOBJ_SIGNATURE = new Uint8Array([0x65, 0x6e, 0x64, 0x6f, 0x62, 0x6a]);
|
|
const FINGERPRINT_FIRST_BYTES = 1024;
|
|
const EMPTY_FINGERPRINT = "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
|
|
const PDF_HEADER_VERSION_REGEXP = /^[1-9]\.\d$/;
|
|
|
|
function find(stream, signature, limit = 1024, backwards = false) {
|
|
const signatureLength = signature.length;
|
|
const scanBytes = stream.peekBytes(limit);
|
|
const scanLength = scanBytes.length - signatureLength;
|
|
|
|
if (scanLength <= 0) {
|
|
return false;
|
|
}
|
|
|
|
if (backwards) {
|
|
const signatureEnd = signatureLength - 1;
|
|
let pos = scanBytes.length - 1;
|
|
|
|
while (pos >= signatureEnd) {
|
|
let j = 0;
|
|
|
|
while (j < signatureLength && scanBytes[pos - j] === signature[signatureEnd - j]) {
|
|
j++;
|
|
}
|
|
|
|
if (j >= signatureLength) {
|
|
stream.pos += pos - signatureEnd;
|
|
return true;
|
|
}
|
|
|
|
pos--;
|
|
}
|
|
} else {
|
|
let pos = 0;
|
|
|
|
while (pos <= scanLength) {
|
|
let j = 0;
|
|
|
|
while (j < signatureLength && scanBytes[pos + j] === signature[j]) {
|
|
j++;
|
|
}
|
|
|
|
if (j >= signatureLength) {
|
|
stream.pos += pos;
|
|
return true;
|
|
}
|
|
|
|
pos++;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
class PDFDocument {
|
|
constructor(pdfManager, stream) {
|
|
if (stream.length <= 0) {
|
|
throw new _util.InvalidPDFException("The PDF file is empty, i.e. its size is zero bytes.");
|
|
}
|
|
|
|
this.pdfManager = pdfManager;
|
|
this.stream = stream;
|
|
this.xref = new _xref.XRef(stream, pdfManager);
|
|
this._pagePromises = new Map();
|
|
this._version = null;
|
|
const idCounters = {
|
|
font: 0
|
|
};
|
|
this._globalIdFactory = class {
|
|
static getDocId() {
|
|
return `g_${pdfManager.docId}`;
|
|
}
|
|
|
|
static createFontId() {
|
|
return `f${++idCounters.font}`;
|
|
}
|
|
|
|
static createObjId() {
|
|
(0, _util.unreachable)("Abstract method `createObjId` called.");
|
|
}
|
|
|
|
static getPageObjId() {
|
|
(0, _util.unreachable)("Abstract method `getPageObjId` called.");
|
|
}
|
|
|
|
};
|
|
}
|
|
|
|
parse(recoveryMode) {
|
|
this.xref.parse(recoveryMode);
|
|
this.catalog = new _catalog.Catalog(this.pdfManager, this.xref);
|
|
|
|
if (this.catalog.version) {
|
|
this._version = this.catalog.version;
|
|
}
|
|
}
|
|
|
|
get linearization() {
|
|
let linearization = null;
|
|
|
|
try {
|
|
linearization = _parser.Linearization.create(this.stream);
|
|
} catch (err) {
|
|
if (err instanceof _core_utils.MissingDataException) {
|
|
throw err;
|
|
}
|
|
|
|
(0, _util.info)(err);
|
|
}
|
|
|
|
return (0, _util.shadow)(this, "linearization", linearization);
|
|
}
|
|
|
|
get startXRef() {
|
|
const stream = this.stream;
|
|
let startXRef = 0;
|
|
|
|
if (this.linearization) {
|
|
stream.reset();
|
|
|
|
if (find(stream, ENDOBJ_SIGNATURE)) {
|
|
startXRef = stream.pos + 6 - stream.start;
|
|
}
|
|
} else {
|
|
const step = 1024;
|
|
const startXRefLength = STARTXREF_SIGNATURE.length;
|
|
let found = false,
|
|
pos = stream.end;
|
|
|
|
while (!found && pos > 0) {
|
|
pos -= step - startXRefLength;
|
|
|
|
if (pos < 0) {
|
|
pos = 0;
|
|
}
|
|
|
|
stream.pos = pos;
|
|
found = find(stream, STARTXREF_SIGNATURE, step, true);
|
|
}
|
|
|
|
if (found) {
|
|
stream.skip(9);
|
|
let ch;
|
|
|
|
do {
|
|
ch = stream.getByte();
|
|
} while ((0, _core_utils.isWhiteSpace)(ch));
|
|
|
|
let str = "";
|
|
|
|
while (ch >= 0x20 && ch <= 0x39) {
|
|
str += String.fromCharCode(ch);
|
|
ch = stream.getByte();
|
|
}
|
|
|
|
startXRef = parseInt(str, 10);
|
|
|
|
if (isNaN(startXRef)) {
|
|
startXRef = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
return (0, _util.shadow)(this, "startXRef", startXRef);
|
|
}
|
|
|
|
checkHeader() {
|
|
const stream = this.stream;
|
|
stream.reset();
|
|
|
|
if (!find(stream, PDF_HEADER_SIGNATURE)) {
|
|
return;
|
|
}
|
|
|
|
stream.moveStart();
|
|
const MAX_PDF_VERSION_LENGTH = 12;
|
|
let version = "",
|
|
ch;
|
|
|
|
while ((ch = stream.getByte()) > 0x20) {
|
|
if (version.length >= MAX_PDF_VERSION_LENGTH) {
|
|
break;
|
|
}
|
|
|
|
version += String.fromCharCode(ch);
|
|
}
|
|
|
|
if (!this._version) {
|
|
this._version = version.substring(5);
|
|
}
|
|
}
|
|
|
|
parseStartXRef() {
|
|
this.xref.setStartXRef(this.startXRef);
|
|
}
|
|
|
|
get numPages() {
|
|
let num = 0;
|
|
|
|
if (this.catalog.hasActualNumPages) {
|
|
num = this.catalog.numPages;
|
|
} else if (this.xfaFactory) {
|
|
num = this.xfaFactory.getNumPages();
|
|
} else if (this.linearization) {
|
|
num = this.linearization.numPages;
|
|
} else {
|
|
num = this.catalog.numPages;
|
|
}
|
|
|
|
return (0, _util.shadow)(this, "numPages", num);
|
|
}
|
|
|
|
_hasOnlyDocumentSignatures(fields, recursionDepth = 0) {
|
|
const RECURSION_LIMIT = 10;
|
|
|
|
if (!Array.isArray(fields)) {
|
|
return false;
|
|
}
|
|
|
|
return fields.every(field => {
|
|
field = this.xref.fetchIfRef(field);
|
|
|
|
if (!(field instanceof _primitives.Dict)) {
|
|
return false;
|
|
}
|
|
|
|
if (field.has("Kids")) {
|
|
if (++recursionDepth > RECURSION_LIMIT) {
|
|
(0, _util.warn)("_hasOnlyDocumentSignatures: maximum recursion depth reached");
|
|
return false;
|
|
}
|
|
|
|
return this._hasOnlyDocumentSignatures(field.get("Kids"), recursionDepth);
|
|
}
|
|
|
|
const isSignature = (0, _primitives.isName)(field.get("FT"), "Sig");
|
|
const rectangle = field.get("Rect");
|
|
const isInvisible = Array.isArray(rectangle) && rectangle.every(value => value === 0);
|
|
return isSignature && isInvisible;
|
|
});
|
|
}
|
|
|
|
get _xfaStreams() {
|
|
const acroForm = this.catalog.acroForm;
|
|
|
|
if (!acroForm) {
|
|
return null;
|
|
}
|
|
|
|
const xfa = acroForm.get("XFA");
|
|
const entries = {
|
|
"xdp:xdp": "",
|
|
template: "",
|
|
datasets: "",
|
|
config: "",
|
|
connectionSet: "",
|
|
localeSet: "",
|
|
stylesheet: "",
|
|
"/xdp:xdp": ""
|
|
};
|
|
|
|
if (xfa instanceof _base_stream.BaseStream && !xfa.isEmpty) {
|
|
entries["xdp:xdp"] = xfa;
|
|
return entries;
|
|
}
|
|
|
|
if (!Array.isArray(xfa) || xfa.length === 0) {
|
|
return null;
|
|
}
|
|
|
|
for (let i = 0, ii = xfa.length; i < ii; i += 2) {
|
|
let name;
|
|
|
|
if (i === 0) {
|
|
name = "xdp:xdp";
|
|
} else if (i === ii - 2) {
|
|
name = "/xdp:xdp";
|
|
} else {
|
|
name = xfa[i];
|
|
}
|
|
|
|
if (!entries.hasOwnProperty(name)) {
|
|
continue;
|
|
}
|
|
|
|
const data = this.xref.fetchIfRef(xfa[i + 1]);
|
|
|
|
if (!(data instanceof _base_stream.BaseStream) || data.isEmpty) {
|
|
continue;
|
|
}
|
|
|
|
entries[name] = data;
|
|
}
|
|
|
|
return entries;
|
|
}
|
|
|
|
get xfaDatasets() {
|
|
const streams = this._xfaStreams;
|
|
|
|
if (!streams) {
|
|
return (0, _util.shadow)(this, "xfaDatasets", null);
|
|
}
|
|
|
|
for (const key of ["datasets", "xdp:xdp"]) {
|
|
const stream = streams[key];
|
|
|
|
if (!stream) {
|
|
continue;
|
|
}
|
|
|
|
try {
|
|
const str = (0, _util.stringToUTF8String)(stream.getString());
|
|
const data = {
|
|
[key]: str
|
|
};
|
|
return (0, _util.shadow)(this, "xfaDatasets", new _dataset_reader.DatasetReader(data));
|
|
} catch (_) {
|
|
(0, _util.warn)("XFA - Invalid utf-8 string.");
|
|
break;
|
|
}
|
|
}
|
|
|
|
return (0, _util.shadow)(this, "xfaDatasets", null);
|
|
}
|
|
|
|
get xfaData() {
|
|
const streams = this._xfaStreams;
|
|
|
|
if (!streams) {
|
|
return null;
|
|
}
|
|
|
|
const data = Object.create(null);
|
|
|
|
for (const [key, stream] of Object.entries(streams)) {
|
|
if (!stream) {
|
|
continue;
|
|
}
|
|
|
|
try {
|
|
data[key] = (0, _util.stringToUTF8String)(stream.getString());
|
|
} catch (_) {
|
|
(0, _util.warn)("XFA - Invalid utf-8 string.");
|
|
return null;
|
|
}
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
get xfaFactory() {
|
|
let data;
|
|
|
|
if (this.pdfManager.enableXfa && this.catalog.needsRendering && this.formInfo.hasXfa && !this.formInfo.hasAcroForm) {
|
|
data = this.xfaData;
|
|
}
|
|
|
|
return (0, _util.shadow)(this, "xfaFactory", data ? new _factory.XFAFactory(data) : null);
|
|
}
|
|
|
|
get isPureXfa() {
|
|
return this.xfaFactory ? this.xfaFactory.isValid() : false;
|
|
}
|
|
|
|
get htmlForXfa() {
|
|
return this.xfaFactory ? this.xfaFactory.getPages() : null;
|
|
}
|
|
|
|
async loadXfaImages() {
|
|
const xfaImagesDict = await this.pdfManager.ensureCatalog("xfaImages");
|
|
|
|
if (!xfaImagesDict) {
|
|
return;
|
|
}
|
|
|
|
const keys = xfaImagesDict.getKeys();
|
|
const objectLoader = new _object_loader.ObjectLoader(xfaImagesDict, keys, this.xref);
|
|
await objectLoader.load();
|
|
const xfaImages = new Map();
|
|
|
|
for (const key of keys) {
|
|
const stream = xfaImagesDict.get(key);
|
|
|
|
if (stream instanceof _base_stream.BaseStream) {
|
|
xfaImages.set(key, stream.getBytes());
|
|
}
|
|
}
|
|
|
|
this.xfaFactory.setImages(xfaImages);
|
|
}
|
|
|
|
async loadXfaFonts(handler, task) {
|
|
const acroForm = await this.pdfManager.ensureCatalog("acroForm");
|
|
|
|
if (!acroForm) {
|
|
return;
|
|
}
|
|
|
|
const resources = await acroForm.getAsync("DR");
|
|
|
|
if (!(resources instanceof _primitives.Dict)) {
|
|
return;
|
|
}
|
|
|
|
const objectLoader = new _object_loader.ObjectLoader(resources, ["Font"], this.xref);
|
|
await objectLoader.load();
|
|
const fontRes = resources.get("Font");
|
|
|
|
if (!(fontRes instanceof _primitives.Dict)) {
|
|
return;
|
|
}
|
|
|
|
const options = Object.assign(Object.create(null), this.pdfManager.evaluatorOptions);
|
|
options.useSystemFonts = false;
|
|
const partialEvaluator = new _evaluator.PartialEvaluator({
|
|
xref: this.xref,
|
|
handler,
|
|
pageIndex: -1,
|
|
idFactory: this._globalIdFactory,
|
|
fontCache: this.catalog.fontCache,
|
|
builtInCMapCache: this.catalog.builtInCMapCache,
|
|
standardFontDataCache: this.catalog.standardFontDataCache,
|
|
options
|
|
});
|
|
const operatorList = new _operator_list.OperatorList();
|
|
const pdfFonts = [];
|
|
const initialState = {
|
|
get font() {
|
|
return pdfFonts.at(-1);
|
|
},
|
|
|
|
set font(font) {
|
|
pdfFonts.push(font);
|
|
},
|
|
|
|
clone() {
|
|
return this;
|
|
}
|
|
|
|
};
|
|
const fonts = new Map();
|
|
fontRes.forEach((fontName, font) => {
|
|
fonts.set(fontName, font);
|
|
});
|
|
const promises = [];
|
|
|
|
for (const [fontName, font] of fonts) {
|
|
const descriptor = font.get("FontDescriptor");
|
|
|
|
if (!(descriptor instanceof _primitives.Dict)) {
|
|
continue;
|
|
}
|
|
|
|
let fontFamily = descriptor.get("FontFamily");
|
|
fontFamily = fontFamily.replace(/[ ]+(\d)/g, "$1");
|
|
const fontWeight = descriptor.get("FontWeight");
|
|
const italicAngle = -descriptor.get("ItalicAngle");
|
|
const cssFontInfo = {
|
|
fontFamily,
|
|
fontWeight,
|
|
italicAngle
|
|
};
|
|
|
|
if (!(0, _core_utils.validateCSSFont)(cssFontInfo)) {
|
|
continue;
|
|
}
|
|
|
|
promises.push(partialEvaluator.handleSetFont(resources, [_primitives.Name.get(fontName), 1], null, operatorList, task, initialState, null, cssFontInfo).catch(function (reason) {
|
|
(0, _util.warn)(`loadXfaFonts: "${reason}".`);
|
|
return null;
|
|
}));
|
|
}
|
|
|
|
await Promise.all(promises);
|
|
const missingFonts = this.xfaFactory.setFonts(pdfFonts);
|
|
|
|
if (!missingFonts) {
|
|
return;
|
|
}
|
|
|
|
options.ignoreErrors = true;
|
|
promises.length = 0;
|
|
pdfFonts.length = 0;
|
|
const reallyMissingFonts = new Set();
|
|
|
|
for (const missing of missingFonts) {
|
|
if (!(0, _xfa_fonts.getXfaFontName)(`${missing}-Regular`)) {
|
|
reallyMissingFonts.add(missing);
|
|
}
|
|
}
|
|
|
|
if (reallyMissingFonts.size) {
|
|
missingFonts.push("PdfJS-Fallback");
|
|
}
|
|
|
|
for (const missing of missingFonts) {
|
|
if (reallyMissingFonts.has(missing)) {
|
|
continue;
|
|
}
|
|
|
|
for (const fontInfo of [{
|
|
name: "Regular",
|
|
fontWeight: 400,
|
|
italicAngle: 0
|
|
}, {
|
|
name: "Bold",
|
|
fontWeight: 700,
|
|
italicAngle: 0
|
|
}, {
|
|
name: "Italic",
|
|
fontWeight: 400,
|
|
italicAngle: 12
|
|
}, {
|
|
name: "BoldItalic",
|
|
fontWeight: 700,
|
|
italicAngle: 12
|
|
}]) {
|
|
const name = `${missing}-${fontInfo.name}`;
|
|
const dict = (0, _xfa_fonts.getXfaFontDict)(name);
|
|
promises.push(partialEvaluator.handleSetFont(resources, [_primitives.Name.get(name), 1], null, operatorList, task, initialState, dict, {
|
|
fontFamily: missing,
|
|
fontWeight: fontInfo.fontWeight,
|
|
italicAngle: fontInfo.italicAngle
|
|
}).catch(function (reason) {
|
|
(0, _util.warn)(`loadXfaFonts: "${reason}".`);
|
|
return null;
|
|
}));
|
|
}
|
|
}
|
|
|
|
await Promise.all(promises);
|
|
this.xfaFactory.appendFonts(pdfFonts, reallyMissingFonts);
|
|
}
|
|
|
|
async serializeXfaData(annotationStorage) {
|
|
return this.xfaFactory ? this.xfaFactory.serializeData(annotationStorage) : null;
|
|
}
|
|
|
|
get formInfo() {
|
|
const formInfo = {
|
|
hasFields: false,
|
|
hasAcroForm: false,
|
|
hasXfa: false,
|
|
hasSignatures: false
|
|
};
|
|
const acroForm = this.catalog.acroForm;
|
|
|
|
if (!acroForm) {
|
|
return (0, _util.shadow)(this, "formInfo", formInfo);
|
|
}
|
|
|
|
try {
|
|
const fields = acroForm.get("Fields");
|
|
const hasFields = Array.isArray(fields) && fields.length > 0;
|
|
formInfo.hasFields = hasFields;
|
|
const xfa = acroForm.get("XFA");
|
|
formInfo.hasXfa = Array.isArray(xfa) && xfa.length > 0 || xfa instanceof _base_stream.BaseStream && !xfa.isEmpty;
|
|
const sigFlags = acroForm.get("SigFlags");
|
|
const hasSignatures = !!(sigFlags & 0x1);
|
|
|
|
const hasOnlyDocumentSignatures = hasSignatures && this._hasOnlyDocumentSignatures(fields);
|
|
|
|
formInfo.hasAcroForm = hasFields && !hasOnlyDocumentSignatures;
|
|
formInfo.hasSignatures = hasSignatures;
|
|
} catch (ex) {
|
|
if (ex instanceof _core_utils.MissingDataException) {
|
|
throw ex;
|
|
}
|
|
|
|
(0, _util.warn)(`Cannot fetch form information: "${ex}".`);
|
|
}
|
|
|
|
return (0, _util.shadow)(this, "formInfo", formInfo);
|
|
}
|
|
|
|
get documentInfo() {
|
|
let version = this._version;
|
|
|
|
if (typeof version !== "string" || !PDF_HEADER_VERSION_REGEXP.test(version)) {
|
|
(0, _util.warn)(`Invalid PDF header version number: ${version}`);
|
|
version = null;
|
|
}
|
|
|
|
const docInfo = {
|
|
PDFFormatVersion: version,
|
|
Language: this.catalog.lang,
|
|
EncryptFilterName: this.xref.encrypt ? this.xref.encrypt.filterName : null,
|
|
IsLinearized: !!this.linearization,
|
|
IsAcroFormPresent: this.formInfo.hasAcroForm,
|
|
IsXFAPresent: this.formInfo.hasXfa,
|
|
IsCollectionPresent: !!this.catalog.collection,
|
|
IsSignaturesPresent: this.formInfo.hasSignatures
|
|
};
|
|
let infoDict;
|
|
|
|
try {
|
|
infoDict = this.xref.trailer.get("Info");
|
|
} catch (err) {
|
|
if (err instanceof _core_utils.MissingDataException) {
|
|
throw err;
|
|
}
|
|
|
|
(0, _util.info)("The document information dictionary is invalid.");
|
|
}
|
|
|
|
if (!(infoDict instanceof _primitives.Dict)) {
|
|
return (0, _util.shadow)(this, "documentInfo", docInfo);
|
|
}
|
|
|
|
for (const key of infoDict.getKeys()) {
|
|
const value = infoDict.get(key);
|
|
|
|
switch (key) {
|
|
case "Title":
|
|
case "Author":
|
|
case "Subject":
|
|
case "Keywords":
|
|
case "Creator":
|
|
case "Producer":
|
|
case "CreationDate":
|
|
case "ModDate":
|
|
if (typeof value === "string") {
|
|
docInfo[key] = (0, _util.stringToPDFString)(value);
|
|
continue;
|
|
}
|
|
|
|
break;
|
|
|
|
case "Trapped":
|
|
if (value instanceof _primitives.Name) {
|
|
docInfo[key] = value;
|
|
continue;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
let customValue;
|
|
|
|
switch (typeof value) {
|
|
case "string":
|
|
customValue = (0, _util.stringToPDFString)(value);
|
|
break;
|
|
|
|
case "number":
|
|
case "boolean":
|
|
customValue = value;
|
|
break;
|
|
|
|
default:
|
|
if (value instanceof _primitives.Name) {
|
|
customValue = value;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (customValue === undefined) {
|
|
(0, _util.warn)(`Bad value, for custom key "${key}", in Info: ${value}.`);
|
|
continue;
|
|
}
|
|
|
|
if (!docInfo.Custom) {
|
|
docInfo.Custom = Object.create(null);
|
|
}
|
|
|
|
docInfo.Custom[key] = customValue;
|
|
continue;
|
|
}
|
|
|
|
(0, _util.warn)(`Bad value, for key "${key}", in Info: ${value}.`);
|
|
}
|
|
|
|
return (0, _util.shadow)(this, "documentInfo", docInfo);
|
|
}
|
|
|
|
get fingerprints() {
|
|
function validate(data) {
|
|
return typeof data === "string" && data.length > 0 && data !== EMPTY_FINGERPRINT;
|
|
}
|
|
|
|
function hexString(hash) {
|
|
const buf = [];
|
|
|
|
for (let i = 0, ii = hash.length; i < ii; i++) {
|
|
const hex = hash[i].toString(16);
|
|
buf.push(hex.padStart(2, "0"));
|
|
}
|
|
|
|
return buf.join("");
|
|
}
|
|
|
|
const idArray = this.xref.trailer.get("ID");
|
|
let hashOriginal, hashModified;
|
|
|
|
if (Array.isArray(idArray) && validate(idArray[0])) {
|
|
hashOriginal = (0, _util.stringToBytes)(idArray[0]);
|
|
|
|
if (idArray[1] !== idArray[0] && validate(idArray[1])) {
|
|
hashModified = (0, _util.stringToBytes)(idArray[1]);
|
|
}
|
|
} else {
|
|
hashOriginal = (0, _crypto.calculateMD5)(this.stream.getByteRange(0, FINGERPRINT_FIRST_BYTES), 0, FINGERPRINT_FIRST_BYTES);
|
|
}
|
|
|
|
return (0, _util.shadow)(this, "fingerprints", [hexString(hashOriginal), hashModified ? hexString(hashModified) : null]);
|
|
}
|
|
|
|
async _getLinearizationPage(pageIndex) {
|
|
const {
|
|
catalog,
|
|
linearization,
|
|
xref
|
|
} = this;
|
|
|
|
const ref = _primitives.Ref.get(linearization.objectNumberFirst, 0);
|
|
|
|
try {
|
|
const obj = await xref.fetchAsync(ref);
|
|
|
|
if (obj instanceof _primitives.Dict) {
|
|
let type = obj.getRaw("Type");
|
|
|
|
if (type instanceof _primitives.Ref) {
|
|
type = await xref.fetchAsync(type);
|
|
}
|
|
|
|
if ((0, _primitives.isName)(type, "Page") || !obj.has("Type") && !obj.has("Kids")) {
|
|
if (!catalog.pageKidsCountCache.has(ref)) {
|
|
catalog.pageKidsCountCache.put(ref, 1);
|
|
}
|
|
|
|
if (!catalog.pageIndexCache.has(ref)) {
|
|
catalog.pageIndexCache.put(ref, 0);
|
|
}
|
|
|
|
return [obj, ref];
|
|
}
|
|
}
|
|
|
|
throw new _util.FormatError("The Linearization dictionary doesn't point to a valid Page dictionary.");
|
|
} catch (reason) {
|
|
(0, _util.warn)(`_getLinearizationPage: "${reason.message}".`);
|
|
return catalog.getPageDict(pageIndex);
|
|
}
|
|
}
|
|
|
|
getPage(pageIndex) {
|
|
const cachedPromise = this._pagePromises.get(pageIndex);
|
|
|
|
if (cachedPromise) {
|
|
return cachedPromise;
|
|
}
|
|
|
|
const {
|
|
catalog,
|
|
linearization,
|
|
xfaFactory
|
|
} = this;
|
|
let promise;
|
|
|
|
if (xfaFactory) {
|
|
promise = Promise.resolve([_primitives.Dict.empty, null]);
|
|
} else if (linearization && linearization.pageFirst === pageIndex) {
|
|
promise = this._getLinearizationPage(pageIndex);
|
|
} else {
|
|
promise = catalog.getPageDict(pageIndex);
|
|
}
|
|
|
|
promise = promise.then(([pageDict, ref]) => {
|
|
return new Page({
|
|
pdfManager: this.pdfManager,
|
|
xref: this.xref,
|
|
pageIndex,
|
|
pageDict,
|
|
ref,
|
|
globalIdFactory: this._globalIdFactory,
|
|
fontCache: catalog.fontCache,
|
|
builtInCMapCache: catalog.builtInCMapCache,
|
|
standardFontDataCache: catalog.standardFontDataCache,
|
|
globalImageCache: catalog.globalImageCache,
|
|
nonBlendModesSet: catalog.nonBlendModesSet,
|
|
xfaFactory
|
|
});
|
|
});
|
|
|
|
this._pagePromises.set(pageIndex, promise);
|
|
|
|
return promise;
|
|
}
|
|
|
|
async checkFirstPage(recoveryMode = false) {
|
|
if (recoveryMode) {
|
|
return;
|
|
}
|
|
|
|
try {
|
|
await this.getPage(0);
|
|
} catch (reason) {
|
|
if (reason instanceof _core_utils.XRefEntryException) {
|
|
this._pagePromises.delete(0);
|
|
|
|
await this.cleanup();
|
|
throw new _core_utils.XRefParseException();
|
|
}
|
|
}
|
|
}
|
|
|
|
async checkLastPage(recoveryMode = false) {
|
|
const {
|
|
catalog,
|
|
pdfManager
|
|
} = this;
|
|
catalog.setActualNumPages();
|
|
let numPages;
|
|
|
|
try {
|
|
await Promise.all([pdfManager.ensureDoc("xfaFactory"), pdfManager.ensureDoc("linearization"), pdfManager.ensureCatalog("numPages")]);
|
|
|
|
if (this.xfaFactory) {
|
|
return;
|
|
} else if (this.linearization) {
|
|
numPages = this.linearization.numPages;
|
|
} else {
|
|
numPages = catalog.numPages;
|
|
}
|
|
|
|
if (!Number.isInteger(numPages)) {
|
|
throw new _util.FormatError("Page count is not an integer.");
|
|
} else if (numPages <= 1) {
|
|
return;
|
|
}
|
|
|
|
await this.getPage(numPages - 1);
|
|
} catch (reason) {
|
|
this._pagePromises.delete(numPages - 1);
|
|
|
|
await this.cleanup();
|
|
|
|
if (reason instanceof _core_utils.XRefEntryException && !recoveryMode) {
|
|
throw new _core_utils.XRefParseException();
|
|
}
|
|
|
|
(0, _util.warn)(`checkLastPage - invalid /Pages tree /Count: ${numPages}.`);
|
|
let pagesTree;
|
|
|
|
try {
|
|
pagesTree = await catalog.getAllPageDicts(recoveryMode);
|
|
} catch (reasonAll) {
|
|
if (reasonAll instanceof _core_utils.XRefEntryException && !recoveryMode) {
|
|
throw new _core_utils.XRefParseException();
|
|
}
|
|
|
|
catalog.setActualNumPages(1);
|
|
return;
|
|
}
|
|
|
|
for (const [pageIndex, [pageDict, ref]] of pagesTree) {
|
|
let promise;
|
|
|
|
if (pageDict instanceof Error) {
|
|
promise = Promise.reject(pageDict);
|
|
promise.catch(() => {});
|
|
} else {
|
|
promise = Promise.resolve(new Page({
|
|
pdfManager,
|
|
xref: this.xref,
|
|
pageIndex,
|
|
pageDict,
|
|
ref,
|
|
globalIdFactory: this._globalIdFactory,
|
|
fontCache: catalog.fontCache,
|
|
builtInCMapCache: catalog.builtInCMapCache,
|
|
standardFontDataCache: catalog.standardFontDataCache,
|
|
globalImageCache: catalog.globalImageCache,
|
|
nonBlendModesSet: catalog.nonBlendModesSet,
|
|
xfaFactory: null
|
|
}));
|
|
}
|
|
|
|
this._pagePromises.set(pageIndex, promise);
|
|
}
|
|
|
|
catalog.setActualNumPages(pagesTree.size);
|
|
}
|
|
}
|
|
|
|
fontFallback(id, handler) {
|
|
return this.catalog.fontFallback(id, handler);
|
|
}
|
|
|
|
async cleanup(manuallyTriggered = false) {
|
|
return this.catalog ? this.catalog.cleanup(manuallyTriggered) : (0, _cleanup_helper.clearGlobalCaches)();
|
|
}
|
|
|
|
_collectFieldObjects(name, fieldRef, promises) {
|
|
const field = this.xref.fetchIfRef(fieldRef);
|
|
|
|
if (field.has("T")) {
|
|
const partName = (0, _util.stringToPDFString)(field.get("T"));
|
|
|
|
if (name === "") {
|
|
name = partName;
|
|
} else {
|
|
name = `${name}.${partName}`;
|
|
}
|
|
}
|
|
|
|
if (!promises.has(name)) {
|
|
promises.set(name, []);
|
|
}
|
|
|
|
promises.get(name).push(_annotation.AnnotationFactory.create(this.xref, fieldRef, this.pdfManager, this._localIdFactory, true).then(annotation => annotation && annotation.getFieldObject()).catch(function (reason) {
|
|
(0, _util.warn)(`_collectFieldObjects: "${reason}".`);
|
|
return null;
|
|
}));
|
|
|
|
if (field.has("Kids")) {
|
|
const kids = field.get("Kids");
|
|
|
|
for (const kid of kids) {
|
|
this._collectFieldObjects(name, kid, promises);
|
|
}
|
|
}
|
|
}
|
|
|
|
get fieldObjects() {
|
|
if (!this.formInfo.hasFields) {
|
|
return (0, _util.shadow)(this, "fieldObjects", Promise.resolve(null));
|
|
}
|
|
|
|
const allFields = Object.create(null);
|
|
const fieldPromises = new Map();
|
|
|
|
for (const fieldRef of this.catalog.acroForm.get("Fields")) {
|
|
this._collectFieldObjects("", fieldRef, fieldPromises);
|
|
}
|
|
|
|
const allPromises = [];
|
|
|
|
for (const [name, promises] of fieldPromises) {
|
|
allPromises.push(Promise.all(promises).then(fields => {
|
|
fields = fields.filter(field => !!field);
|
|
|
|
if (fields.length > 0) {
|
|
allFields[name] = fields;
|
|
}
|
|
}));
|
|
}
|
|
|
|
return (0, _util.shadow)(this, "fieldObjects", Promise.all(allPromises).then(() => allFields));
|
|
}
|
|
|
|
get hasJSActions() {
|
|
const promise = this.pdfManager.ensureDoc("_parseHasJSActions");
|
|
return (0, _util.shadow)(this, "hasJSActions", promise);
|
|
}
|
|
|
|
async _parseHasJSActions() {
|
|
const [catalogJsActions, fieldObjects] = await Promise.all([this.pdfManager.ensureCatalog("jsActions"), this.pdfManager.ensureDoc("fieldObjects")]);
|
|
|
|
if (catalogJsActions) {
|
|
return true;
|
|
}
|
|
|
|
if (fieldObjects) {
|
|
return Object.values(fieldObjects).some(fieldObject => fieldObject.some(object => object.actions !== null));
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
get calculationOrderIds() {
|
|
const acroForm = this.catalog.acroForm;
|
|
|
|
if (!acroForm || !acroForm.has("CO")) {
|
|
return (0, _util.shadow)(this, "calculationOrderIds", null);
|
|
}
|
|
|
|
const calculationOrder = acroForm.get("CO");
|
|
|
|
if (!Array.isArray(calculationOrder) || calculationOrder.length === 0) {
|
|
return (0, _util.shadow)(this, "calculationOrderIds", null);
|
|
}
|
|
|
|
const ids = [];
|
|
|
|
for (const id of calculationOrder) {
|
|
if (id instanceof _primitives.Ref) {
|
|
ids.push(id.toString());
|
|
}
|
|
}
|
|
|
|
if (ids.length === 0) {
|
|
return (0, _util.shadow)(this, "calculationOrderIds", null);
|
|
}
|
|
|
|
return (0, _util.shadow)(this, "calculationOrderIds", ids);
|
|
}
|
|
|
|
}
|
|
|
|
exports.PDFDocument = PDFDocument; |