319 lines
13 KiB
JavaScript
319 lines
13 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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var _cff_parser = require("../../core/cff_parser.js");
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var _fonts_utils = require("../../core/fonts_utils.js");
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var _stream = require("../../core/stream.js");
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describe("CFFParser", function () {
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function createWithNullProto(obj) {
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const result = Object.create(null);
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for (const i in obj) {
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result[i] = obj[i];
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}
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return result;
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}
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const privateDictStub = {
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getByName(name) {
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return 0;
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}
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};
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let fontData, parser, cff;
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beforeAll(function () {
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const exampleFont = "0100040100010101134142434445462b" + "54696d65732d526f6d616e000101011f" + "f81b00f81c02f81d03f819041c6f000d" + "fb3cfb6efa7cfa1605e911b8f1120003" + "01010813183030312e30303754696d65" + "7320526f6d616e54696d657300000002" + "010102030e0e7d99f92a99fb7695f773" + "8b06f79a93fc7c8c077d99f85695f75e" + "9908fb6e8cf87393f7108b09a70adf0b" + "f78e14";
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const fontArr = [];
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for (let i = 0, ii = exampleFont.length; i < ii; i += 2) {
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const hex = exampleFont.substring(i, i + 2);
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fontArr.push(parseInt(hex, 16));
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}
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fontData = new _stream.Stream(fontArr);
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});
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afterAll(function () {
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fontData = null;
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});
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beforeEach(function () {
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parser = new _cff_parser.CFFParser(fontData, {}, _fonts_utils.SEAC_ANALYSIS_ENABLED);
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cff = parser.parse();
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});
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afterEach(function () {
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parser = cff = null;
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});
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it("parses header", function () {
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const header = cff.header;
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expect(header.major).toEqual(1);
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expect(header.minor).toEqual(0);
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expect(header.hdrSize).toEqual(4);
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expect(header.offSize).toEqual(1);
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});
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it("parses name index", function () {
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const names = cff.names;
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expect(names.length).toEqual(1);
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expect(names[0]).toEqual("ABCDEF+Times-Roman");
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});
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it("parses string index", function () {
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const strings = cff.strings;
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expect(strings.count).toEqual(3);
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expect(strings.get(0)).toEqual(".notdef");
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expect(strings.get(391)).toEqual("001.007");
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});
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it("parses top dict", function () {
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const topDict = cff.topDict;
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expect(topDict.getByName("version")).toEqual(391);
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expect(topDict.getByName("FullName")).toEqual(392);
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expect(topDict.getByName("FamilyName")).toEqual(393);
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expect(topDict.getByName("Weight")).toEqual(389);
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expect(topDict.getByName("UniqueID")).toEqual(28416);
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expect(topDict.getByName("FontBBox")).toEqual([-168, -218, 1000, 898]);
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expect(topDict.getByName("CharStrings")).toEqual(94);
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expect(topDict.getByName("Private")).toEqual([45, 102]);
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});
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it("refuses to add topDict key with invalid value (bug 1068432)", function () {
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const topDict = cff.topDict;
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const defaultValue = topDict.getByName("UnderlinePosition");
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topDict.setByKey(3075, [NaN]);
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expect(topDict.getByName("UnderlinePosition")).toEqual(defaultValue);
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});
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it("ignores reserved commands in parseDict, and refuses to add privateDict " + "keys with invalid values (bug 1308536)", function () {
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const bytes = new Uint8Array([64, 39, 31, 30, 252, 114, 137, 115, 79, 30, 197, 119, 2, 99, 127, 6]);
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parser.bytes = bytes;
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const topDict = cff.topDict;
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topDict.setByName("Private", [bytes.length, 0]);
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const parsePrivateDict = function () {
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parser.parsePrivateDict(topDict);
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};
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expect(parsePrivateDict).not.toThrow();
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const privateDict = topDict.privateDict;
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expect(privateDict.getByName("BlueValues")).toBeNull();
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});
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it("parses a CharString having cntrmask", function () {
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const bytes = new Uint8Array([0, 1, 1, 0, 38, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 1, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 3, 20, 22, 22, 14]);
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parser.bytes = bytes;
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const charStringsIndex = parser.parseIndex(0).obj;
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const charStrings = parser.parseCharStrings({
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charStrings: charStringsIndex,
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privateDict: privateDictStub
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}).charStrings;
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expect(charStrings.count).toEqual(1);
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expect(charStrings.get(0).length).toEqual(38);
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});
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it("parses a CharString endchar with 4 args w/seac enabled", function () {
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const cffParser = new _cff_parser.CFFParser(fontData, {}, true);
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cffParser.parse();
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const bytes = new Uint8Array([0, 1, 1, 0, 237, 247, 22, 247, 72, 204, 247, 86, 14]);
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cffParser.bytes = bytes;
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const charStringsIndex = cffParser.parseIndex(0).obj;
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const result = cffParser.parseCharStrings({
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charStrings: charStringsIndex,
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privateDict: privateDictStub
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});
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expect(result.charStrings.count).toEqual(1);
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expect(result.charStrings.get(0).length).toEqual(1);
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expect(result.seacs.length).toEqual(1);
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expect(result.seacs[0].length).toEqual(4);
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expect(result.seacs[0][0]).toEqual(130);
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expect(result.seacs[0][1]).toEqual(180);
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expect(result.seacs[0][2]).toEqual(65);
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expect(result.seacs[0][3]).toEqual(194);
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});
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it("parses a CharString endchar with 4 args w/seac disabled", function () {
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const cffParser = new _cff_parser.CFFParser(fontData, {}, false);
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cffParser.parse();
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const bytes = new Uint8Array([0, 1, 1, 0, 237, 247, 22, 247, 72, 204, 247, 86, 14]);
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cffParser.bytes = bytes;
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const charStringsIndex = cffParser.parseIndex(0).obj;
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const result = cffParser.parseCharStrings({
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charStrings: charStringsIndex,
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privateDict: privateDictStub
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});
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expect(result.charStrings.count).toEqual(1);
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expect(result.charStrings.get(0).length).toEqual(9);
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expect(result.seacs.length).toEqual(0);
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});
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it("parses a CharString endchar no args", function () {
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const bytes = new Uint8Array([0, 1, 1, 0, 14]);
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parser.bytes = bytes;
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const charStringsIndex = parser.parseIndex(0).obj;
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const result = parser.parseCharStrings({
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charStrings: charStringsIndex,
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privateDict: privateDictStub
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});
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expect(result.charStrings.count).toEqual(1);
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expect(result.charStrings.get(0)[0]).toEqual(14);
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expect(result.seacs.length).toEqual(0);
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});
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it("parses predefined charsets", function () {
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const charset = parser.parseCharsets(0, 0, null, true);
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expect(charset.predefined).toEqual(true);
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});
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it("parses charset format 0", function () {
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const bytes = new Uint8Array([0x00, 0x00, 0x00, 0x00, 0x00, 0x02]);
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parser.bytes = bytes;
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let charset = parser.parseCharsets(3, 2, new _cff_parser.CFFStrings(), false);
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expect(charset.charset[1]).toEqual("exclam");
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charset = parser.parseCharsets(3, 2, new _cff_parser.CFFStrings(), true);
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expect(charset.charset[1]).toEqual(2);
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});
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it("parses charset format 1", function () {
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const bytes = new Uint8Array([0x00, 0x00, 0x00, 0x01, 0x00, 0x08, 0x01]);
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parser.bytes = bytes;
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let charset = parser.parseCharsets(3, 2, new _cff_parser.CFFStrings(), false);
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expect(charset.charset).toEqual([".notdef", "quoteright", "parenleft"]);
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charset = parser.parseCharsets(3, 2, new _cff_parser.CFFStrings(), true);
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expect(charset.charset).toEqual([0, 8, 9]);
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});
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it("parses charset format 2", function () {
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const bytes = new Uint8Array([0x00, 0x00, 0x00, 0x02, 0x00, 0x08, 0x00, 0x01]);
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parser.bytes = bytes;
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let charset = parser.parseCharsets(3, 2, new _cff_parser.CFFStrings(), false);
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expect(charset.charset).toEqual([".notdef", "quoteright", "parenleft"]);
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charset = parser.parseCharsets(3, 2, new _cff_parser.CFFStrings(), true);
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expect(charset.charset).toEqual([0, 8, 9]);
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});
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it("parses encoding format 0", function () {
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const bytes = new Uint8Array([0x00, 0x00, 0x00, 0x01, 0x08]);
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parser.bytes = bytes;
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const encoding = parser.parseEncoding(2, {}, new _cff_parser.CFFStrings(), null);
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expect(encoding.encoding).toEqual(createWithNullProto({
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0x8: 1
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}));
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});
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it("parses encoding format 1", function () {
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const bytes = new Uint8Array([0x00, 0x00, 0x01, 0x01, 0x07, 0x01]);
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parser.bytes = bytes;
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const encoding = parser.parseEncoding(2, {}, new _cff_parser.CFFStrings(), null);
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expect(encoding.encoding).toEqual(createWithNullProto({
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0x7: 0x01,
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0x08: 0x02
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}));
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});
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it("parses fdselect format 0", function () {
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const bytes = new Uint8Array([0x00, 0x00, 0x01]);
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parser.bytes = bytes.slice();
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const fdSelect = parser.parseFDSelect(0, 2);
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expect(fdSelect.fdSelect).toEqual([0, 1]);
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expect(fdSelect.format).toEqual(0);
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});
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it("parses fdselect format 3", function () {
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const bytes = new Uint8Array([0x03, 0x00, 0x02, 0x00, 0x00, 0x09, 0x00, 0x02, 0x0a, 0x00, 0x04]);
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parser.bytes = bytes.slice();
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const fdSelect = parser.parseFDSelect(0, 4);
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expect(fdSelect.fdSelect).toEqual([9, 9, 0xa, 0xa]);
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expect(fdSelect.format).toEqual(3);
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});
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it("parses invalid fdselect format 3 (bug 1146106)", function () {
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const bytes = new Uint8Array([0x03, 0x00, 0x02, 0x00, 0x01, 0x09, 0x00, 0x02, 0x0a, 0x00, 0x04]);
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parser.bytes = bytes.slice();
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const fdSelect = parser.parseFDSelect(0, 4);
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expect(fdSelect.fdSelect).toEqual([9, 9, 0xa, 0xa]);
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expect(fdSelect.format).toEqual(3);
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});
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});
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describe("CFFCompiler", function () {
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function testParser(bytes) {
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bytes = new Uint8Array(bytes);
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return new _cff_parser.CFFParser({
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getBytes: () => {
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return bytes;
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}
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}, {}, _fonts_utils.SEAC_ANALYSIS_ENABLED);
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}
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it("encodes integers", function () {
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const c = new _cff_parser.CFFCompiler();
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expect(c.encodeInteger(0)).toEqual([0x8b]);
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expect(c.encodeInteger(100)).toEqual([0xef]);
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expect(c.encodeInteger(-100)).toEqual([0x27]);
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expect(c.encodeInteger(1000)).toEqual([0xfa, 0x7c]);
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expect(c.encodeInteger(-1000)).toEqual([0xfe, 0x7c]);
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expect(c.encodeInteger(10000)).toEqual([0x1c, 0x27, 0x10]);
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expect(c.encodeInteger(-10000)).toEqual([0x1c, 0xd8, 0xf0]);
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expect(c.encodeInteger(100000)).toEqual([0x1d, 0x00, 0x01, 0x86, 0xa0]);
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expect(c.encodeInteger(-100000)).toEqual([0x1d, 0xff, 0xfe, 0x79, 0x60]);
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});
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it("encodes floats", function () {
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const c = new _cff_parser.CFFCompiler();
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expect(c.encodeFloat(-2.25)).toEqual([0x1e, 0xe2, 0xa2, 0x5f]);
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expect(c.encodeFloat(5e-11)).toEqual([0x1e, 0x5c, 0x11, 0xff]);
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});
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it("sanitizes name index", function () {
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const c = new _cff_parser.CFFCompiler();
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let nameIndexCompiled = c.compileNameIndex(["[a"]);
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let parser = testParser(nameIndexCompiled);
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let nameIndex = parser.parseIndex(0);
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let names = parser.parseNameIndex(nameIndex.obj);
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expect(names).toEqual(["_a"]);
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let longName = "";
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for (let i = 0; i < 129; i++) {
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longName += "_";
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}
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nameIndexCompiled = c.compileNameIndex([longName]);
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parser = testParser(nameIndexCompiled);
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nameIndex = parser.parseIndex(0);
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names = parser.parseNameIndex(nameIndex.obj);
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expect(names[0].length).toEqual(127);
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});
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it("compiles fdselect format 0", function () {
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const fdSelect = new _cff_parser.CFFFDSelect(0, [3, 2, 1]);
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const c = new _cff_parser.CFFCompiler();
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const out = c.compileFDSelect(fdSelect);
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expect(out).toEqual([0, 3, 2, 1]);
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});
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it("compiles fdselect format 3", function () {
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const fdSelect = new _cff_parser.CFFFDSelect(3, [0, 0, 1, 1]);
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const c = new _cff_parser.CFFCompiler();
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const out = c.compileFDSelect(fdSelect);
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expect(out).toEqual([3, 0, 2, 0, 0, 0, 0, 2, 1, 0, 4]);
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});
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it("compiles fdselect format 3, single range", function () {
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const fdSelect = new _cff_parser.CFFFDSelect(3, [0, 0]);
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const c = new _cff_parser.CFFCompiler();
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const out = c.compileFDSelect(fdSelect);
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expect(out).toEqual([3, 0, 1, 0, 0, 0, 0, 2]);
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});
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it("compiles charset of CID font", function () {
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const charset = new _cff_parser.CFFCharset();
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const c = new _cff_parser.CFFCompiler();
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const numGlyphs = 7;
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const out = c.compileCharset(charset, numGlyphs, new _cff_parser.CFFStrings(), true);
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expect(out).toEqual([2, 0, 0, 0, numGlyphs - 1]);
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});
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it("compiles charset of non CID font", function () {
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const charset = new _cff_parser.CFFCharset(false, 0, ["space", "exclam"]);
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const c = new _cff_parser.CFFCompiler();
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const numGlyphs = 3;
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const out = c.compileCharset(charset, numGlyphs, new _cff_parser.CFFStrings(), false);
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expect(out).toEqual([0, 0, 1, 0, 2]);
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});
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}); |