10574a0f8a
The done callbacks are an outdated mechanism to signal Jasmine that a unit test is done, mostly in cases where a unit test needed to wait for an asynchronous operation to complete before doing its assertions. Nowadays a much better mechanism is in place for that, namely simply passing an asynchronous function to Jasmine, so we don't need callbacks anymore (which require more code and may be more difficult to reason about). In these particular cases though the done callbacks never had any real use since nothing asynchronous happens in these places. Synchronous functions don't need to use done callbacks since Jasmine simply knows it's done when the function reaches its normal end, so we can safely get rid of these callbacks. The telltale sign is if the done callback is used unconditionally at the end of the function. This is all done in an effort to over time get rid of all callbacks in the unit test code.
508 lines
17 KiB
JavaScript
508 lines
17 KiB
JavaScript
/* Copyright 2017 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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import {
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CFFCharset,
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CFFCompiler,
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CFFFDSelect,
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CFFParser,
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CFFStrings,
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} from "../../src/core/cff_parser.js";
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import { SEAC_ANALYSIS_ENABLED } from "../../src/core/fonts.js";
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import { Stream } from "../../src/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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// Stub that returns `0` for any privateDict key.
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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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// This example font comes from the CFF spec:
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// http://www.adobe.com/content/dam/Adobe/en/devnet/font/pdfs/5176.CFF.pdf
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const exampleFont =
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"0100040100010101134142434445462b" +
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"54696d65732d526f6d616e000101011f" +
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"f81b00f81c02f81d03f819041c6f000d" +
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"fb3cfb6efa7cfa1605e911b8f1120003" +
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"01010813183030312e30303754696d65" +
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"7320526f6d616e54696d657300000002" +
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"010102030e0e7d99f92a99fb7695f773" +
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"8b06f79a93fc7c8c077d99f85695f75e" +
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"9908fb6e8cf87393f7108b09a70adf0b" +
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"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(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 CFFParser(fontData, {}, 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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// 391 version 392 FullName 393 FamilyName 389 Weight 28416 UniqueID
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// -168 -218 1000 898 FontBBox 94 CharStrings 45 102 Private
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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(/* [12, 3] = */ 3075, [NaN]);
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expect(topDict.getByName("UnderlinePosition")).toEqual(defaultValue);
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});
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it(
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"ignores reserved commands in parseDict, and refuses to add privateDict " +
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"keys with invalid values (bug 1308536)",
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function () {
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// prettier-ignore
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const bytes = new Uint8Array([
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64, 39, 31, 30, 252, 114, 137, 115, 79, 30, 197, 119, 2, 99, 127, 6
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]);
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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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);
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it("parses a CharString having cntrmask", function () {
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// prettier-ignore
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const bytes = new Uint8Array([0, 1, // count
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1, // offsetSize
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0, // offset[0]
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38, // end
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149, 149, 149, 149, 149, 149, 149, 149,
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149, 149, 149, 149, 149, 149, 149, 149,
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1, // hstem
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149, 149, 149, 149, 149, 149, 149, 149,
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149, 149, 149, 149, 149, 149, 149, 149,
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3, // vstem
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20, // cntrmask
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22, 22, // fail if misparsed as hmoveto
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14 // endchar
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]);
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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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// shoudn't be sanitized
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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 CFFParser(
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fontData,
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{},
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/* seacAnalysisEnabled = */ true
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);
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cffParser.parse(); // cff
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// prettier-ignore
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const bytes = new Uint8Array([0, 1, // count
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1, // offsetSize
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0, // offset[0]
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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 CFFParser(
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fontData,
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{},
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/* seacAnalysisEnabled = */ false
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);
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cffParser.parse(); // cff
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// prettier-ignore
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const bytes = new Uint8Array([0, 1, // count
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1, // offsetSize
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0, // offset[0]
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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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// prettier-ignore
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const bytes = new Uint8Array([0, 1, // count
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1, // offsetSize
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0, // offset[0]
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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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// The first three bytes make the offset large enough to skip predefined.
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// prettier-ignore
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const bytes = new Uint8Array([0x00, 0x00, 0x00,
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0x00, // format
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0x00, 0x02 // sid/cid
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]);
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parser.bytes = bytes;
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let charset = parser.parseCharsets(3, 2, new CFFStrings(), false);
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expect(charset.charset[1]).toEqual("exclam");
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// CID font
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charset = parser.parseCharsets(3, 2, new 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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// The first three bytes make the offset large enough to skip predefined.
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// prettier-ignore
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const bytes = new Uint8Array([0x00, 0x00, 0x00,
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0x01, // format
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0x00, 0x08, // sid/cid start
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0x01 // sid/cid left
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]);
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parser.bytes = bytes;
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let charset = parser.parseCharsets(3, 2, new CFFStrings(), false);
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expect(charset.charset).toEqual([".notdef", "quoteright", "parenleft"]);
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// CID font
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charset = parser.parseCharsets(3, 2, new 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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// format 2 is the same as format 1 but the left is card16
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// The first three bytes make the offset large enough to skip predefined.
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// prettier-ignore
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const bytes = new Uint8Array([0x00, 0x00, 0x00,
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0x02, // format
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0x00, 0x08, // sid/cid start
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0x00, 0x01 // sid/cid left
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]);
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parser.bytes = bytes;
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let charset = parser.parseCharsets(3, 2, new CFFStrings(), false);
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expect(charset.charset).toEqual([".notdef", "quoteright", "parenleft"]);
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// CID font
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charset = parser.parseCharsets(3, 2, new 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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// The first two bytes make the offset large enough to skip predefined.
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// prettier-ignore
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const bytes = new Uint8Array([0x00, 0x00,
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0x00, // format
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0x01, // count
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0x08 // start
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]);
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parser.bytes = bytes;
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const encoding = parser.parseEncoding(2, {}, new CFFStrings(), null);
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expect(encoding.encoding).toEqual(createWithNullProto({ 0x8: 1 }));
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});
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it("parses encoding format 1", function () {
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// The first two bytes make the offset large enough to skip predefined.
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// prettier-ignore
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const bytes = new Uint8Array([0x00, 0x00,
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0x01, // format
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0x01, // num ranges
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0x07, // range1 start
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0x01 // range2 left
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]);
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parser.bytes = bytes;
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const encoding = parser.parseEncoding(2, {}, new CFFStrings(), null);
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expect(encoding.encoding).toEqual(
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createWithNullProto({ 0x7: 0x01, 0x08: 0x02 })
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);
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});
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it("parses fdselect format 0", function () {
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// prettier-ignore
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const bytes = new Uint8Array([0x00, // format
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0x00, // gid: 0 fd: 0
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0x01 // gid: 1 fd: 1
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]);
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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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// prettier-ignore
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const bytes = new Uint8Array([0x03, // format
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0x00, 0x02, // range count
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0x00, 0x00, // first gid
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0x09, // font dict 1 id
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0x00, 0x02, // next gid
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0x0a, // font dict 2 id
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0x00, 0x04 // sentinel (last gid)
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]);
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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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// prettier-ignore
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const bytes = new Uint8Array([0x03, // format
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0x00, 0x02, // range count
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0x00, 0x01, // first gid (invalid)
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0x09, // font dict 1 id
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0x00, 0x02, // next gid
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0x0a, // font dict 2 id
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0x00, 0x04 // sentinel (last gid)
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]);
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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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// TODO fdArray
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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 CFFParser(
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{
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getBytes: () => {
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return bytes;
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},
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},
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{},
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SEAC_ANALYSIS_ENABLED
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);
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}
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it("encodes integers", function () {
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const c = new CFFCompiler();
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// all the examples from the spec
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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 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 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 CFFFDSelect(0, [3, 2, 1]);
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const c = new CFFCompiler();
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const out = c.compileFDSelect(fdSelect);
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expect(out).toEqual([
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0, // format
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3, // gid: 0 fd 3
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2, // gid: 1 fd 3
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1, // gid: 2 fd 3
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]);
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});
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it("compiles fdselect format 3", function () {
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const fdSelect = new CFFFDSelect(3, [0, 0, 1, 1]);
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const c = new CFFCompiler();
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const out = c.compileFDSelect(fdSelect);
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expect(out).toEqual([
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3, // format
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0, // nRanges (high)
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2, // nRanges (low)
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0, // range struct 0 - first (high)
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0, // range struct 0 - first (low)
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0, // range struct 0 - fd
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0, // range struct 0 - first (high)
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2, // range struct 0 - first (low)
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1, // range struct 0 - fd
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0, // sentinel (high)
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4, // sentinel (low)
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]);
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});
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it("compiles fdselect format 3, single range", function () {
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const fdSelect = new CFFFDSelect(3, [0, 0]);
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const c = new CFFCompiler();
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const out = c.compileFDSelect(fdSelect);
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expect(out).toEqual([
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3, // format
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0, // nRanges (high)
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1, // nRanges (low)
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0, // range struct 0 - first (high)
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0, // range struct 0 - first (low)
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0, // range struct 0 - fd
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|
0, // sentinel (high)
|
|
2, // sentinel (low)
|
|
]);
|
|
});
|
|
|
|
it("compiles charset of CID font", function () {
|
|
const charset = new CFFCharset();
|
|
const c = new CFFCompiler();
|
|
const numGlyphs = 7;
|
|
const out = c.compileCharset(charset, numGlyphs, new CFFStrings(), true);
|
|
// All CID charsets get turned into a simple format 2.
|
|
expect(out).toEqual([
|
|
2, // format
|
|
0, // cid (high)
|
|
0, // cid (low)
|
|
0, // nLeft (high)
|
|
numGlyphs - 1, // nLeft (low)
|
|
]);
|
|
});
|
|
|
|
it("compiles charset of non CID font", function () {
|
|
const charset = new CFFCharset(false, 0, ["space", "exclam"]);
|
|
const c = new CFFCompiler();
|
|
const numGlyphs = 3;
|
|
const out = c.compileCharset(charset, numGlyphs, new CFFStrings(), false);
|
|
// All non-CID fonts use a format 0 charset.
|
|
expect(out).toEqual([
|
|
0, // format
|
|
0, // sid of 'space' (high)
|
|
1, // sid of 'space' (low)
|
|
0, // sid of 'exclam' (high)
|
|
2, // sid of 'exclam' (low)
|
|
]);
|
|
});
|
|
|
|
// TODO a lot more compiler tests
|
|
});
|