pdfjs-dist/lib/test/unit/type1_parser_spec.js

/**
 * @licstart The following is the entire license notice for the
 * Javascript code in this page
 *
 * 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.
 *
 * @licend The above is the entire license notice for the
 * Javascript code in this page
 */
'use strict';

var _fonts = require('../../core/fonts');

var _stream = require('../../core/stream');

var _type1_parser = require('../../core/type1_parser');

describe('Type1Parser', function () {
  it('splits tokens', function () {
    var stream = new _stream.StringStream('/BlueValues[-17 0]noaccess def');
    var parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    expect(parser.getToken()).toEqual('/');
    expect(parser.getToken()).toEqual('BlueValues');
    expect(parser.getToken()).toEqual('[');
    expect(parser.getToken()).toEqual('-17');
    expect(parser.getToken()).toEqual('0');
    expect(parser.getToken()).toEqual(']');
    expect(parser.getToken()).toEqual('noaccess');
    expect(parser.getToken()).toEqual('def');
    expect(parser.getToken()).toEqual(null);
  });
  it('handles glued tokens', function () {
    var stream = new _stream.StringStream('dup/CharStrings');
    var parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    expect(parser.getToken()).toEqual('dup');
    expect(parser.getToken()).toEqual('/');
    expect(parser.getToken()).toEqual('CharStrings');
  });
  it('ignores whitespace', function () {
    var stream = new _stream.StringStream('\nab   c\t');
    var parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    expect(parser.getToken()).toEqual('ab');
    expect(parser.getToken()).toEqual('c');
  });
  it('parses numbers', function () {
    var stream = new _stream.StringStream('123');
    var parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    expect(parser.readNumber()).toEqual(123);
  });
  it('parses booleans', function () {
    var stream = new _stream.StringStream('true false');
    var parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    expect(parser.readBoolean()).toEqual(1);
    expect(parser.readBoolean()).toEqual(0);
  });
  it('parses number arrays', function () {
    var stream = new _stream.StringStream('[1 2]');
    var parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    expect(parser.readNumberArray()).toEqual([1, 2]);
    stream = new _stream.StringStream('[ 1 2 ]');
    parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    expect(parser.readNumberArray()).toEqual([1, 2]);
  });
  it('skips comments', function () {
    var stream = new _stream.StringStream('%!PS-AdobeFont-1.0: CMSY10 003.002\n' + '%%Title: CMSY10\n' + '%Version: 003.002\n' + 'FontDirectory');
    var parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    expect(parser.getToken()).toEqual('FontDirectory');
  });
  it('parses font program', function () {
    var stream = new _stream.StringStream('/ExpansionFactor  99\n' + '/Subrs 1 array\n' + 'dup 0 1 RD x noaccess put\n' + 'end\n' + '/CharStrings 46 dict dup begin\n' + '/.notdef 1 RD x ND\n' + 'end');
    var parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    var program = parser.extractFontProgram();
    expect(program.charstrings.length).toEqual(1);
    expect(program.properties.privateData.ExpansionFactor).toEqual(99);
  });
  it('parses font header font matrix', function () {
    var stream = new _stream.StringStream('/FontMatrix [0.001 0 0 0.001 0 0 ]readonly def\n');
    var parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    var props = {};
    parser.extractFontHeader(props);
    expect(props.fontMatrix).toEqual([0.001, 0, 0, 0.001, 0, 0]);
  });
  it('parses font header encoding', function () {
    var stream = new _stream.StringStream('/Encoding 256 array\n' + '0 1 255 {1 index exch /.notdef put} for\n' + 'dup 33 /arrowright put\n' + 'readonly def\n');
    var parser = new _type1_parser.Type1Parser(stream, false, _fonts.SEAC_ANALYSIS_ENABLED);
    var props = { overridableEncoding: true };
    parser.extractFontHeader(props);
    expect(props.builtInEncoding[33]).toEqual('arrowright');
  });
});