941 lines
24 KiB
JavaScript
941 lines
24 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.IdentityCMap = exports.CMapFactory = exports.CMap = void 0;
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var _util = require("../shared/util.js");
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var _primitives = require("./primitives.js");
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var _base_stream = require("./base_stream.js");
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var _parser = require("./parser.js");
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var _core_utils = require("./core_utils.js");
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var _stream = require("./stream.js");
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const BUILT_IN_CMAPS = ["Adobe-GB1-UCS2", "Adobe-CNS1-UCS2", "Adobe-Japan1-UCS2", "Adobe-Korea1-UCS2", "78-EUC-H", "78-EUC-V", "78-H", "78-RKSJ-H", "78-RKSJ-V", "78-V", "78ms-RKSJ-H", "78ms-RKSJ-V", "83pv-RKSJ-H", "90ms-RKSJ-H", "90ms-RKSJ-V", "90msp-RKSJ-H", "90msp-RKSJ-V", "90pv-RKSJ-H", "90pv-RKSJ-V", "Add-H", "Add-RKSJ-H", "Add-RKSJ-V", "Add-V", "Adobe-CNS1-0", "Adobe-CNS1-1", "Adobe-CNS1-2", "Adobe-CNS1-3", "Adobe-CNS1-4", "Adobe-CNS1-5", "Adobe-CNS1-6", "Adobe-GB1-0", "Adobe-GB1-1", "Adobe-GB1-2", "Adobe-GB1-3", "Adobe-GB1-4", "Adobe-GB1-5", "Adobe-Japan1-0", "Adobe-Japan1-1", "Adobe-Japan1-2", "Adobe-Japan1-3", "Adobe-Japan1-4", "Adobe-Japan1-5", "Adobe-Japan1-6", "Adobe-Korea1-0", "Adobe-Korea1-1", "Adobe-Korea1-2", "B5-H", "B5-V", "B5pc-H", "B5pc-V", "CNS-EUC-H", "CNS-EUC-V", "CNS1-H", "CNS1-V", "CNS2-H", "CNS2-V", "ETHK-B5-H", "ETHK-B5-V", "ETen-B5-H", "ETen-B5-V", "ETenms-B5-H", "ETenms-B5-V", "EUC-H", "EUC-V", "Ext-H", "Ext-RKSJ-H", "Ext-RKSJ-V", "Ext-V", "GB-EUC-H", "GB-EUC-V", "GB-H", "GB-V", "GBK-EUC-H", "GBK-EUC-V", "GBK2K-H", "GBK2K-V", "GBKp-EUC-H", "GBKp-EUC-V", "GBT-EUC-H", "GBT-EUC-V", "GBT-H", "GBT-V", "GBTpc-EUC-H", "GBTpc-EUC-V", "GBpc-EUC-H", "GBpc-EUC-V", "H", "HKdla-B5-H", "HKdla-B5-V", "HKdlb-B5-H", "HKdlb-B5-V", "HKgccs-B5-H", "HKgccs-B5-V", "HKm314-B5-H", "HKm314-B5-V", "HKm471-B5-H", "HKm471-B5-V", "HKscs-B5-H", "HKscs-B5-V", "Hankaku", "Hiragana", "KSC-EUC-H", "KSC-EUC-V", "KSC-H", "KSC-Johab-H", "KSC-Johab-V", "KSC-V", "KSCms-UHC-H", "KSCms-UHC-HW-H", "KSCms-UHC-HW-V", "KSCms-UHC-V", "KSCpc-EUC-H", "KSCpc-EUC-V", "Katakana", "NWP-H", "NWP-V", "RKSJ-H", "RKSJ-V", "Roman", "UniCNS-UCS2-H", "UniCNS-UCS2-V", "UniCNS-UTF16-H", "UniCNS-UTF16-V", "UniCNS-UTF32-H", "UniCNS-UTF32-V", "UniCNS-UTF8-H", "UniCNS-UTF8-V", "UniGB-UCS2-H", "UniGB-UCS2-V", "UniGB-UTF16-H", "UniGB-UTF16-V", "UniGB-UTF32-H", "UniGB-UTF32-V", "UniGB-UTF8-H", "UniGB-UTF8-V", "UniJIS-UCS2-H", "UniJIS-UCS2-HW-H", "UniJIS-UCS2-HW-V", "UniJIS-UCS2-V", "UniJIS-UTF16-H", "UniJIS-UTF16-V", "UniJIS-UTF32-H", "UniJIS-UTF32-V", "UniJIS-UTF8-H", "UniJIS-UTF8-V", "UniJIS2004-UTF16-H", "UniJIS2004-UTF16-V", "UniJIS2004-UTF32-H", "UniJIS2004-UTF32-V", "UniJIS2004-UTF8-H", "UniJIS2004-UTF8-V", "UniJISPro-UCS2-HW-V", "UniJISPro-UCS2-V", "UniJISPro-UTF8-V", "UniJISX0213-UTF32-H", "UniJISX0213-UTF32-V", "UniJISX02132004-UTF32-H", "UniJISX02132004-UTF32-V", "UniKS-UCS2-H", "UniKS-UCS2-V", "UniKS-UTF16-H", "UniKS-UTF16-V", "UniKS-UTF32-H", "UniKS-UTF32-V", "UniKS-UTF8-H", "UniKS-UTF8-V", "V", "WP-Symbol"];
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const MAX_MAP_RANGE = 2 ** 24 - 1;
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class CMap {
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constructor(builtInCMap = false) {
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this.codespaceRanges = [[], [], [], []];
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this.numCodespaceRanges = 0;
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this._map = [];
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this.name = "";
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this.vertical = false;
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this.useCMap = null;
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this.builtInCMap = builtInCMap;
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}
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addCodespaceRange(n, low, high) {
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this.codespaceRanges[n - 1].push(low, high);
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this.numCodespaceRanges++;
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}
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mapCidRange(low, high, dstLow) {
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if (high - low > MAX_MAP_RANGE) {
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throw new Error("mapCidRange - ignoring data above MAX_MAP_RANGE.");
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}
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while (low <= high) {
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this._map[low++] = dstLow++;
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}
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}
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mapBfRange(low, high, dstLow) {
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if (high - low > MAX_MAP_RANGE) {
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throw new Error("mapBfRange - ignoring data above MAX_MAP_RANGE.");
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}
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const lastByte = dstLow.length - 1;
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while (low <= high) {
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this._map[low++] = dstLow;
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const nextCharCode = dstLow.charCodeAt(lastByte) + 1;
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if (nextCharCode > 0xff) {
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dstLow = dstLow.substring(0, lastByte - 1) + String.fromCharCode(dstLow.charCodeAt(lastByte - 1) + 1) + "\x00";
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continue;
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}
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dstLow = dstLow.substring(0, lastByte) + String.fromCharCode(nextCharCode);
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}
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}
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mapBfRangeToArray(low, high, array) {
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if (high - low > MAX_MAP_RANGE) {
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throw new Error("mapBfRangeToArray - ignoring data above MAX_MAP_RANGE.");
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}
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const ii = array.length;
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let i = 0;
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while (low <= high && i < ii) {
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this._map[low] = array[i++];
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++low;
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}
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}
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mapOne(src, dst) {
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this._map[src] = dst;
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}
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lookup(code) {
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return this._map[code];
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}
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contains(code) {
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return this._map[code] !== undefined;
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}
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forEach(callback) {
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const map = this._map;
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const length = map.length;
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if (length <= 0x10000) {
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for (let i = 0; i < length; i++) {
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if (map[i] !== undefined) {
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callback(i, map[i]);
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}
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}
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} else {
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for (const i in map) {
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callback(i, map[i]);
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}
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}
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}
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charCodeOf(value) {
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const map = this._map;
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if (map.length <= 0x10000) {
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return map.indexOf(value);
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}
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for (const charCode in map) {
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if (map[charCode] === value) {
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return charCode | 0;
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}
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}
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return -1;
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}
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getMap() {
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return this._map;
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}
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readCharCode(str, offset, out) {
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let c = 0;
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const codespaceRanges = this.codespaceRanges;
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for (let n = 0, nn = codespaceRanges.length; n < nn; n++) {
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c = (c << 8 | str.charCodeAt(offset + n)) >>> 0;
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const codespaceRange = codespaceRanges[n];
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for (let k = 0, kk = codespaceRange.length; k < kk;) {
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const low = codespaceRange[k++];
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const high = codespaceRange[k++];
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if (c >= low && c <= high) {
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out.charcode = c;
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out.length = n + 1;
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return;
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}
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}
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}
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out.charcode = 0;
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out.length = 1;
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}
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getCharCodeLength(charCode) {
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const codespaceRanges = this.codespaceRanges;
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for (let n = 0, nn = codespaceRanges.length; n < nn; n++) {
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const codespaceRange = codespaceRanges[n];
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for (let k = 0, kk = codespaceRange.length; k < kk;) {
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const low = codespaceRange[k++];
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const high = codespaceRange[k++];
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if (charCode >= low && charCode <= high) {
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return n + 1;
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}
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}
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}
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return 1;
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}
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get length() {
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return this._map.length;
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}
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get isIdentityCMap() {
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if (!(this.name === "Identity-H" || this.name === "Identity-V")) {
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return false;
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}
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if (this._map.length !== 0x10000) {
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return false;
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}
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for (let i = 0; i < 0x10000; i++) {
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if (this._map[i] !== i) {
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return false;
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}
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}
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return true;
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}
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}
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exports.CMap = CMap;
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class IdentityCMap extends CMap {
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constructor(vertical, n) {
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super();
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this.vertical = vertical;
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this.addCodespaceRange(n, 0, 0xffff);
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}
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mapCidRange(low, high, dstLow) {
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(0, _util.unreachable)("should not call mapCidRange");
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}
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mapBfRange(low, high, dstLow) {
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(0, _util.unreachable)("should not call mapBfRange");
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}
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mapBfRangeToArray(low, high, array) {
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(0, _util.unreachable)("should not call mapBfRangeToArray");
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}
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mapOne(src, dst) {
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(0, _util.unreachable)("should not call mapCidOne");
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}
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lookup(code) {
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return Number.isInteger(code) && code <= 0xffff ? code : undefined;
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}
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contains(code) {
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return Number.isInteger(code) && code <= 0xffff;
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}
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forEach(callback) {
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for (let i = 0; i <= 0xffff; i++) {
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callback(i, i);
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}
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}
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charCodeOf(value) {
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return Number.isInteger(value) && value <= 0xffff ? value : -1;
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}
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getMap() {
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const map = new Array(0x10000);
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for (let i = 0; i <= 0xffff; i++) {
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map[i] = i;
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}
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return map;
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}
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get length() {
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return 0x10000;
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}
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get isIdentityCMap() {
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(0, _util.unreachable)("should not access .isIdentityCMap");
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}
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}
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exports.IdentityCMap = IdentityCMap;
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const BinaryCMapReader = function BinaryCMapReaderClosure() {
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function hexToInt(a, size) {
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let n = 0;
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for (let i = 0; i <= size; i++) {
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n = n << 8 | a[i];
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}
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return n >>> 0;
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}
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function hexToStr(a, size) {
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if (size === 1) {
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return String.fromCharCode(a[0], a[1]);
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}
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if (size === 3) {
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return String.fromCharCode(a[0], a[1], a[2], a[3]);
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}
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return String.fromCharCode.apply(null, a.subarray(0, size + 1));
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}
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function addHex(a, b, size) {
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let c = 0;
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for (let i = size; i >= 0; i--) {
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c += a[i] + b[i];
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a[i] = c & 255;
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c >>= 8;
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}
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}
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function incHex(a, size) {
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let c = 1;
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for (let i = size; i >= 0 && c > 0; i--) {
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c += a[i];
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a[i] = c & 255;
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c >>= 8;
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}
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}
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const MAX_NUM_SIZE = 16;
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const MAX_ENCODED_NUM_SIZE = 19;
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class BinaryCMapStream {
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constructor(data) {
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this.buffer = data;
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this.pos = 0;
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this.end = data.length;
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this.tmpBuf = new Uint8Array(MAX_ENCODED_NUM_SIZE);
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}
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readByte() {
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if (this.pos >= this.end) {
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return -1;
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}
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return this.buffer[this.pos++];
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}
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readNumber() {
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let n = 0;
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let last;
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do {
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const b = this.readByte();
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if (b < 0) {
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throw new _util.FormatError("unexpected EOF in bcmap");
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}
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last = !(b & 0x80);
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n = n << 7 | b & 0x7f;
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} while (!last);
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return n;
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}
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readSigned() {
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const n = this.readNumber();
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return n & 1 ? ~(n >>> 1) : n >>> 1;
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}
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readHex(num, size) {
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num.set(this.buffer.subarray(this.pos, this.pos + size + 1));
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this.pos += size + 1;
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}
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readHexNumber(num, size) {
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let last;
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const stack = this.tmpBuf;
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let sp = 0;
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do {
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const b = this.readByte();
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if (b < 0) {
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throw new _util.FormatError("unexpected EOF in bcmap");
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}
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last = !(b & 0x80);
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stack[sp++] = b & 0x7f;
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} while (!last);
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let i = size,
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buffer = 0,
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bufferSize = 0;
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while (i >= 0) {
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while (bufferSize < 8 && stack.length > 0) {
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buffer |= stack[--sp] << bufferSize;
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bufferSize += 7;
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}
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num[i] = buffer & 255;
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i--;
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buffer >>= 8;
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bufferSize -= 8;
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}
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}
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readHexSigned(num, size) {
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this.readHexNumber(num, size);
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const sign = num[size] & 1 ? 255 : 0;
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let c = 0;
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for (let i = 0; i <= size; i++) {
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c = (c & 1) << 8 | num[i];
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num[i] = c >> 1 ^ sign;
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}
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}
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readString() {
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const len = this.readNumber();
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let s = "";
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for (let i = 0; i < len; i++) {
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s += String.fromCharCode(this.readNumber());
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}
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return s;
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}
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}
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class BinaryCMapReader {
|
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async process(data, cMap, extend) {
|
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const stream = new BinaryCMapStream(data);
|
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const header = stream.readByte();
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cMap.vertical = !!(header & 1);
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let useCMap = null;
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const start = new Uint8Array(MAX_NUM_SIZE);
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const end = new Uint8Array(MAX_NUM_SIZE);
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const char = new Uint8Array(MAX_NUM_SIZE);
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const charCode = new Uint8Array(MAX_NUM_SIZE);
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const tmp = new Uint8Array(MAX_NUM_SIZE);
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let code;
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let b;
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while ((b = stream.readByte()) >= 0) {
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const type = b >> 5;
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if (type === 7) {
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switch (b & 0x1f) {
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case 0:
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stream.readString();
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break;
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case 1:
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useCMap = stream.readString();
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break;
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}
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continue;
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}
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const sequence = !!(b & 0x10);
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const dataSize = b & 15;
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|
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if (dataSize + 1 > MAX_NUM_SIZE) {
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throw new Error("BinaryCMapReader.process: Invalid dataSize.");
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}
|
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|
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const ucs2DataSize = 1;
|
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const subitemsCount = stream.readNumber();
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|
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switch (type) {
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case 0:
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stream.readHex(start, dataSize);
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stream.readHexNumber(end, dataSize);
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addHex(end, start, dataSize);
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cMap.addCodespaceRange(dataSize + 1, hexToInt(start, dataSize), hexToInt(end, dataSize));
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for (let i = 1; i < subitemsCount; i++) {
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incHex(end, dataSize);
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stream.readHexNumber(start, dataSize);
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addHex(start, end, dataSize);
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stream.readHexNumber(end, dataSize);
|
|
addHex(end, start, dataSize);
|
|
cMap.addCodespaceRange(dataSize + 1, hexToInt(start, dataSize), hexToInt(end, dataSize));
|
|
}
|
|
|
|
break;
|
|
|
|
case 1:
|
|
stream.readHex(start, dataSize);
|
|
stream.readHexNumber(end, dataSize);
|
|
addHex(end, start, dataSize);
|
|
stream.readNumber();
|
|
|
|
for (let i = 1; i < subitemsCount; i++) {
|
|
incHex(end, dataSize);
|
|
stream.readHexNumber(start, dataSize);
|
|
addHex(start, end, dataSize);
|
|
stream.readHexNumber(end, dataSize);
|
|
addHex(end, start, dataSize);
|
|
stream.readNumber();
|
|
}
|
|
|
|
break;
|
|
|
|
case 2:
|
|
stream.readHex(char, dataSize);
|
|
code = stream.readNumber();
|
|
cMap.mapOne(hexToInt(char, dataSize), code);
|
|
|
|
for (let i = 1; i < subitemsCount; i++) {
|
|
incHex(char, dataSize);
|
|
|
|
if (!sequence) {
|
|
stream.readHexNumber(tmp, dataSize);
|
|
addHex(char, tmp, dataSize);
|
|
}
|
|
|
|
code = stream.readSigned() + (code + 1);
|
|
cMap.mapOne(hexToInt(char, dataSize), code);
|
|
}
|
|
|
|
break;
|
|
|
|
case 3:
|
|
stream.readHex(start, dataSize);
|
|
stream.readHexNumber(end, dataSize);
|
|
addHex(end, start, dataSize);
|
|
code = stream.readNumber();
|
|
cMap.mapCidRange(hexToInt(start, dataSize), hexToInt(end, dataSize), code);
|
|
|
|
for (let i = 1; i < subitemsCount; i++) {
|
|
incHex(end, dataSize);
|
|
|
|
if (!sequence) {
|
|
stream.readHexNumber(start, dataSize);
|
|
addHex(start, end, dataSize);
|
|
} else {
|
|
start.set(end);
|
|
}
|
|
|
|
stream.readHexNumber(end, dataSize);
|
|
addHex(end, start, dataSize);
|
|
code = stream.readNumber();
|
|
cMap.mapCidRange(hexToInt(start, dataSize), hexToInt(end, dataSize), code);
|
|
}
|
|
|
|
break;
|
|
|
|
case 4:
|
|
stream.readHex(char, ucs2DataSize);
|
|
stream.readHex(charCode, dataSize);
|
|
cMap.mapOne(hexToInt(char, ucs2DataSize), hexToStr(charCode, dataSize));
|
|
|
|
for (let i = 1; i < subitemsCount; i++) {
|
|
incHex(char, ucs2DataSize);
|
|
|
|
if (!sequence) {
|
|
stream.readHexNumber(tmp, ucs2DataSize);
|
|
addHex(char, tmp, ucs2DataSize);
|
|
}
|
|
|
|
incHex(charCode, dataSize);
|
|
stream.readHexSigned(tmp, dataSize);
|
|
addHex(charCode, tmp, dataSize);
|
|
cMap.mapOne(hexToInt(char, ucs2DataSize), hexToStr(charCode, dataSize));
|
|
}
|
|
|
|
break;
|
|
|
|
case 5:
|
|
stream.readHex(start, ucs2DataSize);
|
|
stream.readHexNumber(end, ucs2DataSize);
|
|
addHex(end, start, ucs2DataSize);
|
|
stream.readHex(charCode, dataSize);
|
|
cMap.mapBfRange(hexToInt(start, ucs2DataSize), hexToInt(end, ucs2DataSize), hexToStr(charCode, dataSize));
|
|
|
|
for (let i = 1; i < subitemsCount; i++) {
|
|
incHex(end, ucs2DataSize);
|
|
|
|
if (!sequence) {
|
|
stream.readHexNumber(start, ucs2DataSize);
|
|
addHex(start, end, ucs2DataSize);
|
|
} else {
|
|
start.set(end);
|
|
}
|
|
|
|
stream.readHexNumber(end, ucs2DataSize);
|
|
addHex(end, start, ucs2DataSize);
|
|
stream.readHex(charCode, dataSize);
|
|
cMap.mapBfRange(hexToInt(start, ucs2DataSize), hexToInt(end, ucs2DataSize), hexToStr(charCode, dataSize));
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
throw new Error(`BinaryCMapReader.process - unknown type: ${type}`);
|
|
}
|
|
}
|
|
|
|
if (useCMap) {
|
|
return extend(useCMap);
|
|
}
|
|
|
|
return cMap;
|
|
}
|
|
|
|
}
|
|
|
|
return BinaryCMapReader;
|
|
}();
|
|
|
|
const CMapFactory = function CMapFactoryClosure() {
|
|
function strToInt(str) {
|
|
let a = 0;
|
|
|
|
for (let i = 0; i < str.length; i++) {
|
|
a = a << 8 | str.charCodeAt(i);
|
|
}
|
|
|
|
return a >>> 0;
|
|
}
|
|
|
|
function expectString(obj) {
|
|
if (typeof obj !== "string") {
|
|
throw new _util.FormatError("Malformed CMap: expected string.");
|
|
}
|
|
}
|
|
|
|
function expectInt(obj) {
|
|
if (!Number.isInteger(obj)) {
|
|
throw new _util.FormatError("Malformed CMap: expected int.");
|
|
}
|
|
}
|
|
|
|
function parseBfChar(cMap, lexer) {
|
|
while (true) {
|
|
let obj = lexer.getObj();
|
|
|
|
if (obj === _primitives.EOF) {
|
|
break;
|
|
}
|
|
|
|
if ((0, _primitives.isCmd)(obj, "endbfchar")) {
|
|
return;
|
|
}
|
|
|
|
expectString(obj);
|
|
const src = strToInt(obj);
|
|
obj = lexer.getObj();
|
|
expectString(obj);
|
|
const dst = obj;
|
|
cMap.mapOne(src, dst);
|
|
}
|
|
}
|
|
|
|
function parseBfRange(cMap, lexer) {
|
|
while (true) {
|
|
let obj = lexer.getObj();
|
|
|
|
if (obj === _primitives.EOF) {
|
|
break;
|
|
}
|
|
|
|
if ((0, _primitives.isCmd)(obj, "endbfrange")) {
|
|
return;
|
|
}
|
|
|
|
expectString(obj);
|
|
const low = strToInt(obj);
|
|
obj = lexer.getObj();
|
|
expectString(obj);
|
|
const high = strToInt(obj);
|
|
obj = lexer.getObj();
|
|
|
|
if (Number.isInteger(obj) || typeof obj === "string") {
|
|
const dstLow = Number.isInteger(obj) ? String.fromCharCode(obj) : obj;
|
|
cMap.mapBfRange(low, high, dstLow);
|
|
} else if ((0, _primitives.isCmd)(obj, "[")) {
|
|
obj = lexer.getObj();
|
|
const array = [];
|
|
|
|
while (!(0, _primitives.isCmd)(obj, "]") && obj !== _primitives.EOF) {
|
|
array.push(obj);
|
|
obj = lexer.getObj();
|
|
}
|
|
|
|
cMap.mapBfRangeToArray(low, high, array);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
throw new _util.FormatError("Invalid bf range.");
|
|
}
|
|
|
|
function parseCidChar(cMap, lexer) {
|
|
while (true) {
|
|
let obj = lexer.getObj();
|
|
|
|
if (obj === _primitives.EOF) {
|
|
break;
|
|
}
|
|
|
|
if ((0, _primitives.isCmd)(obj, "endcidchar")) {
|
|
return;
|
|
}
|
|
|
|
expectString(obj);
|
|
const src = strToInt(obj);
|
|
obj = lexer.getObj();
|
|
expectInt(obj);
|
|
const dst = obj;
|
|
cMap.mapOne(src, dst);
|
|
}
|
|
}
|
|
|
|
function parseCidRange(cMap, lexer) {
|
|
while (true) {
|
|
let obj = lexer.getObj();
|
|
|
|
if (obj === _primitives.EOF) {
|
|
break;
|
|
}
|
|
|
|
if ((0, _primitives.isCmd)(obj, "endcidrange")) {
|
|
return;
|
|
}
|
|
|
|
expectString(obj);
|
|
const low = strToInt(obj);
|
|
obj = lexer.getObj();
|
|
expectString(obj);
|
|
const high = strToInt(obj);
|
|
obj = lexer.getObj();
|
|
expectInt(obj);
|
|
const dstLow = obj;
|
|
cMap.mapCidRange(low, high, dstLow);
|
|
}
|
|
}
|
|
|
|
function parseCodespaceRange(cMap, lexer) {
|
|
while (true) {
|
|
let obj = lexer.getObj();
|
|
|
|
if (obj === _primitives.EOF) {
|
|
break;
|
|
}
|
|
|
|
if ((0, _primitives.isCmd)(obj, "endcodespacerange")) {
|
|
return;
|
|
}
|
|
|
|
if (typeof obj !== "string") {
|
|
break;
|
|
}
|
|
|
|
const low = strToInt(obj);
|
|
obj = lexer.getObj();
|
|
|
|
if (typeof obj !== "string") {
|
|
break;
|
|
}
|
|
|
|
const high = strToInt(obj);
|
|
cMap.addCodespaceRange(obj.length, low, high);
|
|
}
|
|
|
|
throw new _util.FormatError("Invalid codespace range.");
|
|
}
|
|
|
|
function parseWMode(cMap, lexer) {
|
|
const obj = lexer.getObj();
|
|
|
|
if (Number.isInteger(obj)) {
|
|
cMap.vertical = !!obj;
|
|
}
|
|
}
|
|
|
|
function parseCMapName(cMap, lexer) {
|
|
const obj = lexer.getObj();
|
|
|
|
if (obj instanceof _primitives.Name) {
|
|
cMap.name = obj.name;
|
|
}
|
|
}
|
|
|
|
async function parseCMap(cMap, lexer, fetchBuiltInCMap, useCMap) {
|
|
let previous, embeddedUseCMap;
|
|
|
|
objLoop: while (true) {
|
|
try {
|
|
const obj = lexer.getObj();
|
|
|
|
if (obj === _primitives.EOF) {
|
|
break;
|
|
} else if (obj instanceof _primitives.Name) {
|
|
if (obj.name === "WMode") {
|
|
parseWMode(cMap, lexer);
|
|
} else if (obj.name === "CMapName") {
|
|
parseCMapName(cMap, lexer);
|
|
}
|
|
|
|
previous = obj;
|
|
} else if (obj instanceof _primitives.Cmd) {
|
|
switch (obj.cmd) {
|
|
case "endcmap":
|
|
break objLoop;
|
|
|
|
case "usecmap":
|
|
if (previous instanceof _primitives.Name) {
|
|
embeddedUseCMap = previous.name;
|
|
}
|
|
|
|
break;
|
|
|
|
case "begincodespacerange":
|
|
parseCodespaceRange(cMap, lexer);
|
|
break;
|
|
|
|
case "beginbfchar":
|
|
parseBfChar(cMap, lexer);
|
|
break;
|
|
|
|
case "begincidchar":
|
|
parseCidChar(cMap, lexer);
|
|
break;
|
|
|
|
case "beginbfrange":
|
|
parseBfRange(cMap, lexer);
|
|
break;
|
|
|
|
case "begincidrange":
|
|
parseCidRange(cMap, lexer);
|
|
break;
|
|
}
|
|
}
|
|
} catch (ex) {
|
|
if (ex instanceof _core_utils.MissingDataException) {
|
|
throw ex;
|
|
}
|
|
|
|
(0, _util.warn)("Invalid cMap data: " + ex);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!useCMap && embeddedUseCMap) {
|
|
useCMap = embeddedUseCMap;
|
|
}
|
|
|
|
if (useCMap) {
|
|
return extendCMap(cMap, fetchBuiltInCMap, useCMap);
|
|
}
|
|
|
|
return cMap;
|
|
}
|
|
|
|
async function extendCMap(cMap, fetchBuiltInCMap, useCMap) {
|
|
cMap.useCMap = await createBuiltInCMap(useCMap, fetchBuiltInCMap);
|
|
|
|
if (cMap.numCodespaceRanges === 0) {
|
|
const useCodespaceRanges = cMap.useCMap.codespaceRanges;
|
|
|
|
for (let i = 0; i < useCodespaceRanges.length; i++) {
|
|
cMap.codespaceRanges[i] = useCodespaceRanges[i].slice();
|
|
}
|
|
|
|
cMap.numCodespaceRanges = cMap.useCMap.numCodespaceRanges;
|
|
}
|
|
|
|
cMap.useCMap.forEach(function (key, value) {
|
|
if (!cMap.contains(key)) {
|
|
cMap.mapOne(key, cMap.useCMap.lookup(key));
|
|
}
|
|
});
|
|
return cMap;
|
|
}
|
|
|
|
async function createBuiltInCMap(name, fetchBuiltInCMap) {
|
|
if (name === "Identity-H") {
|
|
return new IdentityCMap(false, 2);
|
|
} else if (name === "Identity-V") {
|
|
return new IdentityCMap(true, 2);
|
|
}
|
|
|
|
if (!BUILT_IN_CMAPS.includes(name)) {
|
|
throw new Error("Unknown CMap name: " + name);
|
|
}
|
|
|
|
if (!fetchBuiltInCMap) {
|
|
throw new Error("Built-in CMap parameters are not provided.");
|
|
}
|
|
|
|
const {
|
|
cMapData,
|
|
compressionType
|
|
} = await fetchBuiltInCMap(name);
|
|
const cMap = new CMap(true);
|
|
|
|
if (compressionType === _util.CMapCompressionType.BINARY) {
|
|
return new BinaryCMapReader().process(cMapData, cMap, useCMap => {
|
|
return extendCMap(cMap, fetchBuiltInCMap, useCMap);
|
|
});
|
|
}
|
|
|
|
if (compressionType === _util.CMapCompressionType.NONE) {
|
|
const lexer = new _parser.Lexer(new _stream.Stream(cMapData));
|
|
return parseCMap(cMap, lexer, fetchBuiltInCMap, null);
|
|
}
|
|
|
|
throw new Error("TODO: Only BINARY/NONE CMap compression is currently supported.");
|
|
}
|
|
|
|
return {
|
|
async create(params) {
|
|
const encoding = params.encoding;
|
|
const fetchBuiltInCMap = params.fetchBuiltInCMap;
|
|
const useCMap = params.useCMap;
|
|
|
|
if (encoding instanceof _primitives.Name) {
|
|
return createBuiltInCMap(encoding.name, fetchBuiltInCMap);
|
|
} else if (encoding instanceof _base_stream.BaseStream) {
|
|
const parsedCMap = await parseCMap(new CMap(), new _parser.Lexer(encoding), fetchBuiltInCMap, useCMap);
|
|
|
|
if (parsedCMap.isIdentityCMap) {
|
|
return createBuiltInCMap(parsedCMap.name, fetchBuiltInCMap);
|
|
}
|
|
|
|
return parsedCMap;
|
|
}
|
|
|
|
throw new Error("Encoding required.");
|
|
}
|
|
|
|
};
|
|
}();
|
|
|
|
exports.CMapFactory = CMapFactory; |