374 lines
14 KiB
JavaScript
374 lines
14 KiB
JavaScript
/* Copyright 2017 Mozilla Foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
import {
|
|
CFFCompiler, CFFIndex, CFFParser, CFFStrings
|
|
} from '../../src/core/cff_parser';
|
|
import { SEAC_ANALYSIS_ENABLED } from '../../src/core/fonts';
|
|
import { Stream } from '../../src/core/stream';
|
|
|
|
describe('CFFParser', function() {
|
|
function createWithNullProto(obj) {
|
|
var result = Object.create(null);
|
|
for (var i in obj) {
|
|
result[i] = obj[i];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
var fontData, parser, cff;
|
|
|
|
beforeAll(function (done) {
|
|
// This example font comes from the CFF spec:
|
|
// http://www.adobe.com/content/dam/Adobe/en/devnet/font/pdfs/5176.CFF.pdf
|
|
var exampleFont = '0100040100010101134142434445462b' +
|
|
'54696d65732d526f6d616e000101011f' +
|
|
'f81b00f81c02f81d03f819041c6f000d' +
|
|
'fb3cfb6efa7cfa1605e911b8f1120003' +
|
|
'01010813183030312e30303754696d65' +
|
|
'7320526f6d616e54696d657300000002' +
|
|
'010102030e0e7d99f92a99fb7695f773' +
|
|
'8b06f79a93fc7c8c077d99f85695f75e' +
|
|
'9908fb6e8cf87393f7108b09a70adf0b' +
|
|
'f78e14';
|
|
var fontArr = [];
|
|
for (var i = 0, ii = exampleFont.length; i < ii; i += 2) {
|
|
var hex = exampleFont.substr(i, 2);
|
|
fontArr.push(parseInt(hex, 16));
|
|
}
|
|
fontData = new Stream(fontArr);
|
|
done();
|
|
});
|
|
|
|
afterAll(function () {
|
|
fontData = null;
|
|
});
|
|
|
|
beforeEach(function (done) {
|
|
parser = new CFFParser(fontData, {}, SEAC_ANALYSIS_ENABLED);
|
|
cff = parser.parse();
|
|
done();
|
|
});
|
|
|
|
afterEach(function (done) {
|
|
parser = cff = null;
|
|
done();
|
|
});
|
|
|
|
it('parses header', function() {
|
|
var header = cff.header;
|
|
expect(header.major).toEqual(1);
|
|
expect(header.minor).toEqual(0);
|
|
expect(header.hdrSize).toEqual(4);
|
|
expect(header.offSize).toEqual(1);
|
|
});
|
|
|
|
it('parses name index', function() {
|
|
var names = cff.names;
|
|
expect(names.length).toEqual(1);
|
|
expect(names[0]).toEqual('ABCDEF+Times-Roman');
|
|
});
|
|
|
|
it('sanitizes name index', function() {
|
|
var index = new CFFIndex();
|
|
index.add(['['.charCodeAt(0), 'a'.charCodeAt(0)]);
|
|
|
|
var names = parser.parseNameIndex(index);
|
|
expect(names).toEqual(['_a']);
|
|
|
|
index = new CFFIndex();
|
|
var longName = [];
|
|
for (var i = 0; i < 129; i++) {
|
|
longName.push(0);
|
|
}
|
|
index.add(longName);
|
|
names = parser.parseNameIndex(index);
|
|
expect(names[0].length).toEqual(127);
|
|
});
|
|
|
|
it('parses string index', function() {
|
|
var strings = cff.strings;
|
|
expect(strings.count).toEqual(3);
|
|
expect(strings.get(0)).toEqual('.notdef');
|
|
expect(strings.get(391)).toEqual('001.007');
|
|
});
|
|
|
|
it('parses top dict', function() {
|
|
var topDict = cff.topDict;
|
|
// 391 version 392 FullName 393 FamilyName 389 Weight 28416 UniqueID
|
|
// -168 -218 1000 898 FontBBox 94 CharStrings 45 102 Private
|
|
expect(topDict.getByName('version')).toEqual(391);
|
|
expect(topDict.getByName('FullName')).toEqual(392);
|
|
expect(topDict.getByName('FamilyName')).toEqual(393);
|
|
expect(topDict.getByName('Weight')).toEqual(389);
|
|
expect(topDict.getByName('UniqueID')).toEqual(28416);
|
|
expect(topDict.getByName('FontBBox')).toEqual([-168, -218, 1000, 898]);
|
|
expect(topDict.getByName('CharStrings')).toEqual(94);
|
|
expect(topDict.getByName('Private')).toEqual([45, 102]);
|
|
});
|
|
|
|
it('refuses to add topDict key with invalid value (bug 1068432)',
|
|
function () {
|
|
var topDict = cff.topDict;
|
|
var defaultValue = topDict.getByName('UnderlinePosition');
|
|
|
|
topDict.setByKey(/* [12, 3] = */ 3075, [NaN]);
|
|
expect(topDict.getByName('UnderlinePosition')).toEqual(defaultValue);
|
|
});
|
|
|
|
it('ignores reserved commands in parseDict, and refuses to add privateDict ' +
|
|
'keys with invalid values (bug 1308536)', function () {
|
|
var bytes = new Uint8Array([
|
|
64, 39, 31, 30, 252, 114, 137, 115, 79, 30, 197, 119, 2, 99, 127, 6
|
|
]);
|
|
parser.bytes = bytes;
|
|
var topDict = cff.topDict;
|
|
topDict.setByName('Private', [bytes.length, 0]);
|
|
|
|
var parsePrivateDict = function () {
|
|
parser.parsePrivateDict(topDict);
|
|
};
|
|
expect(parsePrivateDict).not.toThrow();
|
|
|
|
var privateDict = topDict.privateDict;
|
|
expect(privateDict.getByName('BlueValues')).toBeNull();
|
|
});
|
|
|
|
it('parses a CharString having cntrmask', function() {
|
|
var bytes = new Uint8Array([0, 1, // count
|
|
1, // offsetSize
|
|
0, // offset[0]
|
|
38, // end
|
|
149, 149, 149, 149, 149, 149, 149, 149,
|
|
149, 149, 149, 149, 149, 149, 149, 149,
|
|
1, // hstem
|
|
149, 149, 149, 149, 149, 149, 149, 149,
|
|
149, 149, 149, 149, 149, 149, 149, 149,
|
|
3, // vstem
|
|
20, // cntrmask
|
|
22, 22, // fail if misparsed as hmoveto
|
|
14 // endchar
|
|
]);
|
|
parser.bytes = bytes;
|
|
var charStringsIndex = parser.parseIndex(0).obj;
|
|
var charStrings = parser.parseCharStrings(charStringsIndex).charStrings;
|
|
expect(charStrings.count).toEqual(1);
|
|
// shoudn't be sanitized
|
|
expect(charStrings.get(0).length).toEqual(38);
|
|
});
|
|
|
|
it('parses a CharString endchar with 4 args w/seac enabled', function() {
|
|
var parser = new CFFParser(fontData, {},
|
|
/* seacAnalysisEnabled = */ true);
|
|
parser.parse(); // cff
|
|
|
|
var bytes = new Uint8Array([0, 1, // count
|
|
1, // offsetSize
|
|
0, // offset[0]
|
|
237, 247, 22, 247, 72, 204, 247, 86, 14]);
|
|
parser.bytes = bytes;
|
|
var charStringsIndex = parser.parseIndex(0).obj;
|
|
var result = parser.parseCharStrings(charStringsIndex);
|
|
expect(result.charStrings.count).toEqual(1);
|
|
expect(result.charStrings.get(0).length).toEqual(1);
|
|
expect(result.seacs.length).toEqual(1);
|
|
expect(result.seacs[0].length).toEqual(4);
|
|
expect(result.seacs[0][0]).toEqual(130);
|
|
expect(result.seacs[0][1]).toEqual(180);
|
|
expect(result.seacs[0][2]).toEqual(65);
|
|
expect(result.seacs[0][3]).toEqual(194);
|
|
});
|
|
|
|
it('parses a CharString endchar with 4 args w/seac disabled', function() {
|
|
var parser = new CFFParser(fontData, {},
|
|
/* seacAnalysisEnabled = */ false);
|
|
parser.parse(); // cff
|
|
|
|
var bytes = new Uint8Array([0, 1, // count
|
|
1, // offsetSize
|
|
0, // offset[0]
|
|
237, 247, 22, 247, 72, 204, 247, 86, 14]);
|
|
parser.bytes = bytes;
|
|
var charStringsIndex = parser.parseIndex(0).obj;
|
|
var result = parser.parseCharStrings(charStringsIndex);
|
|
expect(result.charStrings.count).toEqual(1);
|
|
expect(result.charStrings.get(0).length).toEqual(9);
|
|
expect(result.seacs.length).toEqual(0);
|
|
});
|
|
|
|
it('parses a CharString endchar no args', function() {
|
|
var bytes = new Uint8Array([0, 1, // count
|
|
1, // offsetSize
|
|
0, // offset[0]
|
|
14]);
|
|
parser.bytes = bytes;
|
|
var charStringsIndex = parser.parseIndex(0).obj;
|
|
var result = parser.parseCharStrings(charStringsIndex);
|
|
expect(result.charStrings.count).toEqual(1);
|
|
expect(result.charStrings.get(0)[0]).toEqual(14);
|
|
expect(result.seacs.length).toEqual(0);
|
|
});
|
|
|
|
it('parses predefined charsets', function() {
|
|
var charset = parser.parseCharsets(0, 0, null, true);
|
|
expect(charset.predefined).toEqual(true);
|
|
});
|
|
|
|
it('parses charset format 0', function() {
|
|
// The first three bytes make the offset large enough to skip predefined.
|
|
var bytes = new Uint8Array([0x00, 0x00, 0x00,
|
|
0x00, // format
|
|
0x00, 0x02 // sid/cid
|
|
]);
|
|
parser.bytes = bytes;
|
|
var charset = parser.parseCharsets(3, 2, new CFFStrings(), false);
|
|
expect(charset.charset[1]).toEqual('exclam');
|
|
|
|
// CID font
|
|
charset = parser.parseCharsets(3, 2, new CFFStrings(), true);
|
|
expect(charset.charset[1]).toEqual(2);
|
|
});
|
|
|
|
it('parses charset format 1', function() {
|
|
// The first three bytes make the offset large enough to skip predefined.
|
|
var bytes = new Uint8Array([0x00, 0x00, 0x00,
|
|
0x01, // format
|
|
0x00, 0x08, // sid/cid start
|
|
0x01 // sid/cid left
|
|
]);
|
|
parser.bytes = bytes;
|
|
var charset = parser.parseCharsets(3, 2, new CFFStrings(), false);
|
|
expect(charset.charset).toEqual(['.notdef', 'quoteright', 'parenleft']);
|
|
|
|
// CID font
|
|
charset = parser.parseCharsets(3, 2, new CFFStrings(), true);
|
|
expect(charset.charset).toEqual(['.notdef', 8, 9]);
|
|
});
|
|
|
|
it('parses charset format 2', function() {
|
|
// format 2 is the same as format 1 but the left is card16
|
|
// The first three bytes make the offset large enough to skip predefined.
|
|
var bytes = new Uint8Array([0x00, 0x00, 0x00,
|
|
0x02, // format
|
|
0x00, 0x08, // sid/cid start
|
|
0x00, 0x01 // sid/cid left
|
|
]);
|
|
parser.bytes = bytes;
|
|
var charset = parser.parseCharsets(3, 2, new CFFStrings(), false);
|
|
expect(charset.charset).toEqual(['.notdef', 'quoteright', 'parenleft']);
|
|
|
|
// CID font
|
|
charset = parser.parseCharsets(3, 2, new CFFStrings(), true);
|
|
expect(charset.charset).toEqual(['.notdef', 8, 9]);
|
|
});
|
|
|
|
it('parses encoding format 0', function() {
|
|
// The first two bytes make the offset large enough to skip predefined.
|
|
var bytes = new Uint8Array([0x00, 0x00,
|
|
0x00, // format
|
|
0x01, // count
|
|
0x08 // start
|
|
]);
|
|
parser.bytes = bytes;
|
|
var encoding = parser.parseEncoding(2, {}, new CFFStrings(), null);
|
|
expect(encoding.encoding).toEqual(createWithNullProto({0x8: 1}));
|
|
});
|
|
|
|
it('parses encoding format 1', function() {
|
|
// The first two bytes make the offset large enough to skip predefined.
|
|
var bytes = new Uint8Array([0x00, 0x00,
|
|
0x01, // format
|
|
0x01, // num ranges
|
|
0x07, // range1 start
|
|
0x01 // range2 left
|
|
]);
|
|
parser.bytes = bytes;
|
|
var encoding = parser.parseEncoding(2, {}, new CFFStrings(), null);
|
|
expect(encoding.encoding).toEqual(
|
|
createWithNullProto({0x7: 0x01, 0x08: 0x02}));
|
|
});
|
|
|
|
it('parses fdselect format 0', function() {
|
|
var bytes = new Uint8Array([0x00, // format
|
|
0x00, // gid: 0 fd: 0
|
|
0x01 // gid: 1 fd: 1
|
|
]);
|
|
parser.bytes = bytes.slice();
|
|
var fdSelect = parser.parseFDSelect(0, 2);
|
|
|
|
expect(fdSelect.fdSelect).toEqual([0, 1]);
|
|
expect(fdSelect.raw).toEqual(bytes);
|
|
});
|
|
|
|
it('parses fdselect format 3', function() {
|
|
var bytes = new Uint8Array([0x03, // format
|
|
0x00, 0x02, // range count
|
|
0x00, 0x00, // first gid
|
|
0x09, // font dict 1 id
|
|
0x00, 0x02, // next gid
|
|
0x0a, // font dict 2 id
|
|
0x00, 0x04 // sentinel (last gid)
|
|
]);
|
|
parser.bytes = bytes.slice();
|
|
var fdSelect = parser.parseFDSelect(0, 4);
|
|
|
|
expect(fdSelect.fdSelect).toEqual([9, 9, 0xa, 0xa]);
|
|
expect(fdSelect.raw).toEqual(bytes);
|
|
});
|
|
|
|
it('parses invalid fdselect format 3 (bug 1146106)', function() {
|
|
var bytes = new Uint8Array([0x03, // format
|
|
0x00, 0x02, // range count
|
|
0x00, 0x01, // first gid (invalid)
|
|
0x09, // font dict 1 id
|
|
0x00, 0x02, // next gid
|
|
0x0a, // font dict 2 id
|
|
0x00, 0x04 // sentinel (last gid)
|
|
]);
|
|
parser.bytes = bytes.slice();
|
|
var fdSelect = parser.parseFDSelect(0, 4);
|
|
|
|
expect(fdSelect.fdSelect).toEqual([9, 9, 0xa, 0xa]);
|
|
bytes[3] = bytes[4] = 0x00; // The adjusted first range, first gid.
|
|
expect(fdSelect.raw).toEqual(bytes);
|
|
});
|
|
|
|
// TODO fdArray
|
|
});
|
|
|
|
describe('CFFCompiler', function() {
|
|
it('encodes integers', function() {
|
|
var c = new CFFCompiler();
|
|
// all the examples from the spec
|
|
expect(c.encodeInteger(0)).toEqual([0x8b]);
|
|
expect(c.encodeInteger(100)).toEqual([0xef]);
|
|
expect(c.encodeInteger(-100)).toEqual([0x27]);
|
|
expect(c.encodeInteger(1000)).toEqual([0xfa, 0x7c]);
|
|
expect(c.encodeInteger(-1000)).toEqual([0xfe, 0x7c]);
|
|
expect(c.encodeInteger(10000)).toEqual([0x1c, 0x27, 0x10]);
|
|
expect(c.encodeInteger(-10000)).toEqual([0x1c, 0xd8, 0xf0]);
|
|
expect(c.encodeInteger(100000)).toEqual([0x1d, 0x00, 0x01, 0x86, 0xa0]);
|
|
expect(c.encodeInteger(-100000)).toEqual([0x1d, 0xff, 0xfe, 0x79, 0x60]);
|
|
});
|
|
|
|
it('encodes floats', function() {
|
|
var c = new CFFCompiler();
|
|
expect(c.encodeFloat(-2.25)).toEqual([0x1e, 0xe2, 0xa2, 0x5f]);
|
|
expect(c.encodeFloat(5e-11)).toEqual([0x1e, 0x5c, 0x11, 0xff]);
|
|
});
|
|
|
|
// TODO a lot more compiler tests
|
|
});
|