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Merge pull request #3674 from brendandahl/cmap-squash
Read multi-byte character codes based on codespace ranges.
This commit is contained in:
Yury Delendik
commit
1c7f1cee00
9 changed files with 592 additions and 124 deletions
460
src/core/cmap.js
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460
src/core/cmap.js
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/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
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/* Copyright 2012 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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/* globals Util, isString, isInt, warn, error, isCmd, isEOF, isName, Lexer,
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isStream */
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'use strict';
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var CMAP_CODESPACES = {
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'Adobe-CNS1-0': [[], [0, 14335]],
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'Adobe-CNS1-1': [[], [0, 17407]],
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'Adobe-CNS1-2': [[], [0, 17663]],
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'Adobe-CNS1-3': [[], [0, 18943]],
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'Adobe-CNS1-4': [[], [0, 19199]],
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'Adobe-CNS1-5': [[], [0, 19199]],
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'Adobe-CNS1-6': [[], [0, 19199]],
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'Adobe-CNS1-UCS2': [[], [0, 65535]],
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'B5-H': [[0, 128], [41280, 65278]],
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'B5-V': [[0, 128], [41280, 65278]],
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'B5pc-H': [[0, 128, 253, 255], [41280, 64766]],
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'B5pc-V': [[0, 128, 253, 255], [41280, 64766]],
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'CNS-EUC-H': [[0, 128], [41377, 65278], [],
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[2392957345, 2392981246, 2393022881, 2393046782, 2393088417, 2393112318]],
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'CNS-EUC-V': [[0, 128], [41377, 65278], [],
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[2392957345, 2392981246, 2393022881, 2393046782, 2393088417, 2393112318]],
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'CNS1-H': [[], [8481, 32382]],
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'CNS1-V': [[], [8481, 32382]],
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'CNS2-H': [[], [8481, 32382]],
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'CNS2-V': [[], [8481, 32382]],
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'ETen-B5-H': [[0, 128], [41280, 65278]],
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'ETen-B5-V': [[0, 128], [41280, 65278]],
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'ETenms-B5-H': [[0, 128], [41280, 65278]],
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'ETenms-B5-V': [[0, 128], [41280, 65278]],
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'ETHK-B5-H': [[0, 128], [34624, 65278]],
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'ETHK-B5-V': [[0, 128], [34624, 65278]],
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'HKdla-B5-H': [[0, 128], [41280, 65278]],
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'HKdla-B5-V': [[0, 128], [41280, 65278]],
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'HKdlb-B5-H': [[0, 128], [36416, 65278]],
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'HKdlb-B5-V': [[0, 128], [36416, 65278]],
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'HKgccs-B5-H': [[0, 128], [35392, 65278]],
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'HKgccs-B5-V': [[0, 128], [35392, 65278]],
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'HKm314-B5-H': [[0, 128], [41280, 65278]],
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'HKm314-B5-V': [[0, 128], [41280, 65278]],
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'HKm471-B5-H': [[0, 128], [41280, 65278]],
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'HKm471-B5-V': [[0, 128], [41280, 65278]],
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'HKscs-B5-H': [[0, 128], [34624, 65278]],
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'HKscs-B5-V': [[0, 128], [34624, 65278]],
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'UniCNS-UCS2-H': [[], [0, 55295, 57344, 65535]],
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'UniCNS-UCS2-V': [[], [0, 55295, 57344, 65535]],
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'UniCNS-UTF16-H': [[], [0, 55295, 57344, 65535], [],
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[3623934976, 3690979327]],
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'UniCNS-UTF16-V': [[], [0, 55295, 57344, 65535], [],
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[3623934976, 3690979327]],
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'Adobe-GB1-0': [[], [0, 7935]],
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'Adobe-GB1-1': [[], [0, 9983]],
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'Adobe-GB1-2': [[], [0, 22271]],
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'Adobe-GB1-3': [[], [0, 22527]],
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'Adobe-GB1-4': [[], [0, 29183]],
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'Adobe-GB1-5': [[], [0, 30463]],
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'Adobe-GB1-UCS2': [[], [0, 65535]],
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'GB-EUC-H': [[0, 128], [41377, 65278]],
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'GB-EUC-V': [[0, 128], [41377, 65278]],
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'GB-H': [[], [8481, 32382]],
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'GB-V': [[], [8481, 32382]],
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'GBK-EUC-H': [[0, 128], [33088, 65278]],
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'GBK-EUC-V': [[0, 128], [33088, 65278]],
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'GBK2K-H': [[0, 127], [33088, 65278], [], [2167439664, 4265213497]],
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'GBK2K-V': [[0, 127], [33088, 65278], [], [2167439664, 4265213497]],
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'GBKp-EUC-H': [[0, 128], [33088, 65278]],
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'GBKp-EUC-V': [[0, 128], [33088, 65278]],
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'GBpc-EUC-H': [[0, 128, 253, 255], [41377, 64766]],
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'GBpc-EUC-V': [[0, 128, 253, 255], [41377, 64766]],
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'GBT-EUC-H': [[0, 128], [41377, 65278]],
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'GBT-EUC-V': [[0, 128], [41377, 65278]],
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'GBT-H': [[], [8481, 32382]],
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'GBT-V': [[], [8481, 32382]],
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'GBTpc-EUC-H': [[0, 128, 253, 255], [41377, 64766]],
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'GBTpc-EUC-V': [[0, 128, 253, 255], [41377, 64766]],
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'UniGB-UCS2-H': [[], [0, 55295, 57344, 65535]],
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'UniGB-UCS2-V': [[], [0, 55295, 57344, 65535]],
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'UniGB-UTF16-H': [[], [0, 55295, 57344, 65535], [], [3623934976, 3690979327]],
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'UniGB-UTF16-V': [[], [0, 55295, 57344, 65535], [], [3623934976, 3690979327]],
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'78-EUC-H': [[0, 128], [36512, 36575, 41377, 65278]],
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'78-EUC-V': [[0, 128], [36512, 36575, 41377, 65278]],
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'78-H': [[], [8481, 32382]],
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'78-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'78-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'78-V': [[], [8481, 32382]],
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'78ms-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'78ms-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'83pv-RKSJ-H': [[0, 128, 160, 223, 253, 255], [33088, 40956, 57408, 64764]],
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'90ms-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'90ms-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'90msp-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'90msp-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'90pv-RKSJ-H': [[0, 128, 160, 223, 253, 255], [33088, 40956, 57408, 64764]],
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'90pv-RKSJ-V': [[0, 128, 160, 223, 253, 255], [33088, 40956, 57408, 64764]],
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'Add-H': [[], [8481, 32382]],
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'Add-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'Add-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'Add-V': [[], [8481, 32382]],
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'Adobe-Japan1-0': [[], [0, 8447]],
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'Adobe-Japan1-1': [[], [0, 8447]],
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'Adobe-Japan1-2': [[], [0, 8959]],
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'Adobe-Japan1-3': [[], [0, 9471]],
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'Adobe-Japan1-4': [[], [0, 15615]],
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'Adobe-Japan1-5': [[], [0, 20479]],
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'Adobe-Japan1-6': [[], [0, 23295]],
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'Adobe-Japan1-UCS2': [[], [0, 65535]],
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'Adobe-Japan2-0': [[], [0, 6143]],
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'EUC-H': [[0, 128], [36512, 36575, 41377, 65278]],
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'EUC-V': [[0, 128], [36512, 36575, 41377, 65278]],
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'Ext-H': [[], [8481, 32382]],
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'Ext-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'Ext-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'Ext-V': [[], [8481, 32382]],
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'H': [[], [8481, 32382]],
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'Hankaku': [[0, 255], []],
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'Hiragana': [[0, 255], []],
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'Hojo-EUC-H': [[], [], [9413025, 9436926], []],
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'Hojo-EUC-V': [[], [], [9413025, 9436926], []],
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'Hojo-H': [[], [8481, 32382]],
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'Hojo-V': [[], [8481, 32382]],
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'Katakana': [[0, 255], []],
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'NWP-H': [[], [8481, 32382]],
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'NWP-V': [[], [8481, 32382]],
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'RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]],
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'Roman': [[0, 255], []],
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'UniHojo-UCS2-H': [[], [0, 55295, 57344, 65535]],
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'UniHojo-UCS2-V': [[], [0, 55295, 57344, 65535]],
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'UniHojo-UTF16-H': [[], [0, 55295, 57344, 65535], [],
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[3623934976, 3690979327]],
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'UniHojo-UTF16-V': [[], [0, 55295, 57344, 65535], [],
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[3623934976, 3690979327]],
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'UniJIS-UCS2-H': [[], [0, 55295, 57344, 65535]],
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'UniJIS-UCS2-HW-H': [[], [0, 55295, 57344, 65535]],
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'UniJIS-UCS2-HW-V': [[], [0, 55295, 57344, 65535]],
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'UniJIS-UCS2-V': [[], [0, 55295, 57344, 65535]],
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'UniJIS-UTF16-H': [[], [0, 55295, 57344, 65535], [],
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[3623934976, 3690979327]],
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'UniJIS-UTF16-V': [[], [0, 55295, 57344, 65535], [],
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[3623934976, 3690979327]],
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'UniJISPro-UCS2-HW-V': [[], [0, 55295, 57344, 65535]],
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'UniJISPro-UCS2-V': [[], [0, 55295, 57344, 65535]],
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'V': [[], [8481, 32382]],
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'WP-Symbol': [[0, 255], []],
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'Adobe-Korea1-0': [[], [0, 9471]],
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'Adobe-Korea1-1': [[], [0, 18175]],
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'Adobe-Korea1-2': [[], [0, 18431]],
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'Adobe-Korea1-UCS2': [[], [0, 65535]],
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'KSC-EUC-H': [[0, 128], [41377, 65278]],
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'KSC-EUC-V': [[0, 128], [41377, 65278]],
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'KSC-H': [[], [8481, 32382]],
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'KSC-Johab-H': [[0, 128], [33857, 54270, 55345, 57086, 57393, 63998]],
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'KSC-Johab-V': [[0, 128], [33857, 54270, 55345, 57086, 57393, 63998]],
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'KSC-V': [[], [8481, 32382]],
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'KSCms-UHC-H': [[0, 128], [33089, 65278]],
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'KSCms-UHC-HW-H': [[0, 128], [33089, 65278]],
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'KSCms-UHC-HW-V': [[0, 128], [33089, 65278]],
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'KSCms-UHC-V': [[0, 128], [33089, 65278]],
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'KSCpc-EUC-H': [[0, 132, 254, 255], [41281, 65022]],
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'KSCpc-EUC-V': [[0, 132, 254, 255], [41281, 65022]],
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'UniKS-UCS2-H': [[], [0, 55295, 57344, 65535]],
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'UniKS-UCS2-V': [[], [0, 55295, 57344, 65535]],
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'UniKS-UTF16-H': [[], [0, 55295, 57344, 65535], [], [3623934976, 3690979327]],
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'UniKS-UTF16-V': [[], [0, 55295, 57344, 65535], [], [3623934976, 3690979327]]
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};
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// CMap, not to be confused with TrueType's cmap.
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var CMap = (function CMapClosure() {
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function CMap() {
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// Codespace ranges are stored as follows:
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// [[1BytePairs], [2BytePairs], [3BytePairs], [4BytePairs]]
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// where nBytePairs are ranges e.g. [low1, high1, low2, high2, ...]
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this.codespaceRanges = [[], [], [], []];
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this.map = [];
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this.vertical = false;
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}
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CMap.prototype = {
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addCodespaceRange: function(n, low, high) {
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this.codespaceRanges[n - 1].push(low, high);
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},
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mapRange: function(low, high, dstLow) {
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var lastByte = dstLow.length - 1;
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while (low <= high) {
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this.map[low] = dstLow;
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// Only the last byte has to be incremented.
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dstLow = dstLow.substr(0, lastByte) +
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String.fromCharCode(dstLow.charCodeAt(lastByte) + 1);
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++low;
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}
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},
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mapRangeToArray: function(low, high, array) {
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var i = 0;
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while (low <= high) {
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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: function(src, dst) {
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this.map[src] = dst;
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},
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lookup: function(code) {
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return this.map[code];
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},
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readCharCode: function(str, offset) {
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var c = 0;
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var codespaceRanges = this.codespaceRanges;
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var codespaceRangesLen = this.codespaceRanges.length;
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// 9.7.6.2 CMap Mapping
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// The code length is at most 4.
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for (var n = 0; n < codespaceRangesLen; n++) {
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c = ((c << 8) | str.charCodeAt(offset + n)) >>> 0;
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// Check each codespace range to see if it falls within.
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var codespaceRange = codespaceRanges[n];
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for (var k = 0, kk = codespaceRange.length; k < kk;) {
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var low = codespaceRange[k++];
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var high = codespaceRange[k++];
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if (c >= low && c <= high) {
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return [c, n + 1];
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}
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}
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}
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return [0, 1];
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}
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};
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return CMap;
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})();
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var IdentityCMap = (function IdentityCMapClosure() {
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function IdentityCMap(vertical, n) {
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CMap.call(this);
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this.vertical = vertical;
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this.addCodespaceRange(n, 0, 0xffff);
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this.mapRange(0, 0xffff, '\u0000');
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}
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Util.inherit(IdentityCMap, CMap, {});
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return IdentityCMap;
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})();
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var CMapFactory = (function CMapFactoryClosure() {
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function strToInt(str) {
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var a = 0;
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for (var i = 0; i < str.length; i++) {
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a = (a << 8) | str.charCodeAt(i);
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}
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return a >>> 0;
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}
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function expectString(obj) {
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if (!isString(obj)) {
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error('Malformed CMap: expected string.');
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}
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}
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function expectInt(obj) {
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if (!isInt(obj)) {
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error('Malformed CMap: expected int.');
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}
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}
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function parseBfChar(cMap, lexer) {
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while (true) {
|
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var obj = lexer.getObj();
|
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if (isEOF(obj)) {
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break;
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}
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if (isCmd(obj, 'endbfchar')) {
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return;
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}
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expectString(obj);
|
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var src = strToInt(obj);
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obj = lexer.getObj();
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// TODO are /dstName used?
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expectString(obj);
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var dst = obj;
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cMap.mapOne(src, dst);
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}
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}
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function parseBfRange(cMap, lexer) {
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while (true) {
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var obj = lexer.getObj();
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if (isEOF(obj)) {
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break;
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}
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if (isCmd(obj, 'endbfrange')) {
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return;
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}
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expectString(obj);
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var low = strToInt(obj);
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obj = lexer.getObj();
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expectString(obj);
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var high = strToInt(obj);
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obj = lexer.getObj();
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if (isInt(obj) || isString(obj)) {
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var dstLow = isInt(obj) ? String.fromCharCode(obj) : obj;
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cMap.mapRange(low, high, dstLow);
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} else if (isCmd(obj, '[')) {
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obj = lexer.getObj();
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var array = [];
|
||||
while (!isCmd(obj, ']') && !isEOF(obj)) {
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array.push(obj);
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obj = lexer.getObj();
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}
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cMap.mapRangeToArray(low, high, array);
|
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} else {
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break;
|
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}
|
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}
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error('Invalid bf range.');
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}
|
||||
|
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function parseCidChar(cMap, lexer) {
|
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while (true) {
|
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var obj = lexer.getObj();
|
||||
if (isEOF(obj)) {
|
||||
break;
|
||||
}
|
||||
if (isCmd(obj, 'endcidchar')) {
|
||||
return;
|
||||
}
|
||||
expectString(obj);
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||||
var src = strToInt(obj);
|
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obj = lexer.getObj();
|
||||
expectInt(obj);
|
||||
var dst = String.fromCharCode(obj);
|
||||
cMap.mapOne(src, dst);
|
||||
}
|
||||
}
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||||
|
||||
function parseCidRange(cMap, lexer) {
|
||||
while (true) {
|
||||
var obj = lexer.getObj();
|
||||
if (isEOF(obj)) {
|
||||
break;
|
||||
}
|
||||
if (isCmd(obj, 'endcidrange')) {
|
||||
return;
|
||||
}
|
||||
expectString(obj);
|
||||
var low = strToInt(obj);
|
||||
obj = lexer.getObj();
|
||||
expectString(obj);
|
||||
var high = strToInt(obj);
|
||||
obj = lexer.getObj();
|
||||
expectInt(obj);
|
||||
var dstLow = String.fromCharCode(obj);
|
||||
cMap.mapRange(low, high, dstLow);
|
||||
}
|
||||
}
|
||||
|
||||
function parseCodespaceRange(cMap, lexer) {
|
||||
while (true) {
|
||||
var obj = lexer.getObj();
|
||||
if (isEOF(obj)) {
|
||||
break;
|
||||
}
|
||||
if (isCmd(obj, 'endcodespacerange')) {
|
||||
return;
|
||||
}
|
||||
if (!isString(obj)) {
|
||||
break;
|
||||
}
|
||||
var low = strToInt(obj);
|
||||
obj = lexer.getObj();
|
||||
if (!isString(obj)) {
|
||||
break;
|
||||
}
|
||||
var high = strToInt(obj);
|
||||
cMap.addCodespaceRange(obj.length, low, high);
|
||||
}
|
||||
error('Invalid codespace range.');
|
||||
}
|
||||
|
||||
function parseCmap(cMap, lexer) {
|
||||
objLoop: while (true) {
|
||||
var obj = lexer.getObj();
|
||||
if (isEOF(obj)) {
|
||||
break;
|
||||
} else if (isCmd(obj)) {
|
||||
switch (obj.cmd) {
|
||||
case 'endcMap':
|
||||
break objLoop;
|
||||
case 'usecMap':
|
||||
// TODO
|
||||
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;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return {
|
||||
create: function (encoding) {
|
||||
if (isName(encoding)) {
|
||||
switch (encoding.name) {
|
||||
case 'Identity-H':
|
||||
return new IdentityCMap(false, 2);
|
||||
case 'Identity-V':
|
||||
return new IdentityCMap(true, 2);
|
||||
default:
|
||||
if (encoding.name in CMAP_CODESPACES) {
|
||||
// XXX: Temporary hack so the correct amount of bytes are read in
|
||||
// CMap.readCharCode.
|
||||
var cMap = new CMap();
|
||||
cMap.codespaceRanges = CMAP_CODESPACES[encoding.name];
|
||||
return cMap;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
} else if (isStream(encoding)) {
|
||||
var cMap = new CMap();
|
||||
var lexer = new Lexer(encoding);
|
||||
try {
|
||||
parseCmap(cMap, lexer);
|
||||
} catch (e) {
|
||||
warn('Invalid CMap data. ' + e);
|
||||
}
|
||||
return cMap;
|
||||
}
|
||||
error('Encoding required.');
|
||||
}
|
||||
};
|
||||
})();
|
||||
|
|
@ -20,7 +20,7 @@
|
|||
isStream, isString, JpegStream, Lexer, Metrics, Name, Parser,
|
||||
Pattern, PDFImage, PDFJS, serifFonts, stdFontMap, symbolsFonts,
|
||||
TilingPattern, TODO, warn, Util, Promise,
|
||||
RefSetCache, isRef, TextRenderingMode */
|
||||
RefSetCache, isRef, TextRenderingMode, CMapFactory */
|
||||
|
||||
'use strict';
|
||||
|
||||
|
|
@ -1010,119 +1010,24 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
|
|||
if (!isIdentityMap)
|
||||
error('ToUnicode file cmap translation not implemented');
|
||||
} else if (isStream(cmapObj)) {
|
||||
var tokens = [];
|
||||
var token = '';
|
||||
var beginArrayToken = {};
|
||||
|
||||
var cmap = cmapObj.getBytes(cmapObj.length);
|
||||
for (var i = 0, ii = cmap.length; i < ii; i++) {
|
||||
var octet = cmap[i];
|
||||
if (octet == 0x20 || octet == 0x0D || octet == 0x0A ||
|
||||
octet == 0x3C || octet == 0x5B || octet == 0x5D) {
|
||||
switch (token) {
|
||||
case 'usecmap':
|
||||
error('usecmap is not implemented');
|
||||
break;
|
||||
|
||||
case 'beginbfchar':
|
||||
case 'beginbfrange':
|
||||
case 'begincidchar':
|
||||
case 'begincidrange':
|
||||
token = '';
|
||||
tokens = [];
|
||||
break;
|
||||
|
||||
case 'endcidrange':
|
||||
case 'endbfrange':
|
||||
for (var j = 0, jj = tokens.length; j < jj; j += 3) {
|
||||
var startRange = tokens[j];
|
||||
var endRange = tokens[j + 1];
|
||||
var code = tokens[j + 2];
|
||||
if (code == 0xFFFF) {
|
||||
// CMap is broken, assuming code == startRange
|
||||
code = startRange;
|
||||
}
|
||||
if (isArray(code)) {
|
||||
var codeindex = 0;
|
||||
while (startRange <= endRange) {
|
||||
charToUnicode[startRange] = code[codeindex++];
|
||||
++startRange;
|
||||
}
|
||||
} else {
|
||||
while (startRange <= endRange) {
|
||||
charToUnicode[startRange] = code++;
|
||||
++startRange;
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case 'endcidchar':
|
||||
case 'endbfchar':
|
||||
for (var j = 0, jj = tokens.length; j < jj; j += 2) {
|
||||
var index = tokens[j];
|
||||
var code = tokens[j + 1];
|
||||
charToUnicode[index] = code;
|
||||
}
|
||||
break;
|
||||
|
||||
case '':
|
||||
break;
|
||||
|
||||
default:
|
||||
if (token[0] >= '0' && token[0] <= '9')
|
||||
token = parseInt(token, 10); // a number
|
||||
tokens.push(token);
|
||||
token = '';
|
||||
var cmap = CMapFactory.create(cmapObj).map;
|
||||
// Convert UTF-16BE
|
||||
for (var i in cmap) {
|
||||
var token = cmap[i];
|
||||
var str = [];
|
||||
for (var k = 0; k < token.length; k += 2) {
|
||||
var w1 = (token.charCodeAt(k) << 8) | token.charCodeAt(k + 1);
|
||||
if ((w1 & 0xF800) !== 0xD800) { // w1 < 0xD800 || w1 > 0xDFFF
|
||||
str.push(w1);
|
||||
continue;
|
||||
}
|
||||
switch (octet) {
|
||||
case 0x5B:
|
||||
// begin list parsing
|
||||
tokens.push(beginArrayToken);
|
||||
break;
|
||||
case 0x5D:
|
||||
// collect array items
|
||||
var items = [], item;
|
||||
while (tokens.length &&
|
||||
(item = tokens.pop()) != beginArrayToken)
|
||||
items.unshift(item);
|
||||
tokens.push(items);
|
||||
break;
|
||||
}
|
||||
} else if (octet == 0x3E) {
|
||||
if (token.length) {
|
||||
// Heuristic: guessing chars size by checking numbers sizes
|
||||
// in the CMap entries.
|
||||
if (token.length == 2 && properties.composite)
|
||||
properties.wideChars = false;
|
||||
|
||||
if (token.length <= 4) {
|
||||
// parsing hex number
|
||||
tokens.push(parseInt(token, 16));
|
||||
token = '';
|
||||
} else {
|
||||
// parsing hex UTF-16BE numbers
|
||||
var str = [];
|
||||
for (var k = 0, kk = token.length; k < kk; k += 4) {
|
||||
var b = parseInt(token.substr(k, 4), 16);
|
||||
if (b <= 0x10) {
|
||||
k += 4;
|
||||
b = (b << 16) | parseInt(token.substr(k, 4), 16);
|
||||
b -= 0x10000;
|
||||
str.push(0xD800 | (b >> 10));
|
||||
str.push(0xDC00 | (b & 0x3FF));
|
||||
break;
|
||||
}
|
||||
str.push(b);
|
||||
}
|
||||
tokens.push(String.fromCharCode.apply(String, str));
|
||||
token = '';
|
||||
}
|
||||
}
|
||||
} else {
|
||||
token += String.fromCharCode(octet);
|
||||
k += 2;
|
||||
var w2 = (token.charCodeAt(k) << 8) | token.charCodeAt(k + 1);
|
||||
str.push(((w1 & 0x3ff) << 10) + (w2 & 0x3ff) + 0x10000);
|
||||
}
|
||||
cmap[i] = String.fromCharCode.apply(String, str);
|
||||
}
|
||||
return cmap;
|
||||
}
|
||||
return charToUnicode;
|
||||
},
|
||||
|
|
@ -1409,6 +1314,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
|
|||
properties.cidEncoding = cidEncoding.name;
|
||||
properties.vertical = /-V$/.test(cidEncoding.name);
|
||||
}
|
||||
properties.cmap = CMapFactory.create(cidEncoding);
|
||||
}
|
||||
this.extractWidths(dict, xref, descriptor, properties);
|
||||
this.extractDataStructures(dict, baseDict, xref, properties);
|
||||
|
|
|
|||
|
|
@ -18,7 +18,7 @@
|
|||
ExpertSubsetCharset, FileReaderSync, GlyphsUnicode,
|
||||
info, isArray, isNum, ISOAdobeCharset, Stream,
|
||||
stringToBytes, TextDecoder, TODO, warn, Lexer, Util,
|
||||
FONT_IDENTITY_MATRIX, FontRendererFactory, shadow */
|
||||
FONT_IDENTITY_MATRIX, FontRendererFactory, shadow, isString */
|
||||
|
||||
'use strict';
|
||||
|
||||
|
|
@ -2182,6 +2182,7 @@ var Font = (function FontClosure() {
|
|||
this.composite = properties.composite;
|
||||
this.wideChars = properties.wideChars;
|
||||
this.hasEncoding = properties.hasEncoding;
|
||||
this.cmap = properties.cmap;
|
||||
|
||||
this.fontMatrix = properties.fontMatrix;
|
||||
if (properties.type == 'Type3') {
|
||||
|
|
@ -3701,7 +3702,7 @@ var Font = (function FontClosure() {
|
|||
|
||||
var dupFirstEntry = false;
|
||||
if (properties.type == 'CIDFontType2' && properties.toUnicode &&
|
||||
properties.toUnicode[0] > 0) {
|
||||
properties.toUnicode[0] > '\u0000') {
|
||||
// oracle's defect (see 3427), duplicating first entry
|
||||
dupFirstEntry = true;
|
||||
numGlyphs++;
|
||||
|
|
@ -4250,8 +4251,12 @@ var Font = (function FontClosure() {
|
|||
var unicode = toUnicode[i];
|
||||
var fontCharCode = typeof unicode === 'object' ? unusedUnicode++ :
|
||||
unicode;
|
||||
if (typeof unicode !== 'undefined')
|
||||
if (typeof unicode !== 'undefined') {
|
||||
if (isString(fontCharCode) && fontCharCode.length === 1) {
|
||||
fontCharCode = fontCharCode.charCodeAt(0);
|
||||
}
|
||||
result[i] = fontCharCode;
|
||||
}
|
||||
}
|
||||
return result;
|
||||
},
|
||||
|
|
@ -4264,7 +4269,7 @@ var Font = (function FontClosure() {
|
|||
var isIdentityMap = toUnicode.length === 0;
|
||||
for (var i = firstChar, ii = lastChar; i <= ii; i++) {
|
||||
// TODO missing map the character according font's CMap
|
||||
map[i] = isIdentityMap ? i : toUnicode[i];
|
||||
map[i] = isIdentityMap ? String.fromCharCode(i) : toUnicode[i];
|
||||
}
|
||||
} else {
|
||||
for (var i = firstChar, ii = lastChar; i <= ii; i++) {
|
||||
|
|
@ -4272,7 +4277,7 @@ var Font = (function FontClosure() {
|
|||
if (!glyph)
|
||||
glyph = properties.baseEncoding[i];
|
||||
if (!!glyph && (glyph in GlyphsUnicode))
|
||||
map[i] = GlyphsUnicode[glyph];
|
||||
map[i] = String.fromCharCode(GlyphsUnicode[glyph]);
|
||||
}
|
||||
}
|
||||
this.toUnicode = map;
|
||||
|
|
@ -4535,15 +4540,15 @@ var Font = (function FontClosure() {
|
|||
warn('Unsupported CMap: ' + cidEncoding);
|
||||
}
|
||||
}
|
||||
if (!converter && this.wideChars) {
|
||||
if (!converter && this.cmap) {
|
||||
var i = 0;
|
||||
// composite fonts have multi-byte strings convert the string from
|
||||
// single-byte to multi-byte
|
||||
// XXX assuming CIDFonts are two-byte - later need to extract the
|
||||
// correct byte encoding according to the PDF spec
|
||||
var length = chars.length - 1; // looping over two bytes at a time so
|
||||
// loop should never end on the last byte
|
||||
for (var i = 0; i < length; i++) {
|
||||
var charcode = int16([chars.charCodeAt(i++), chars.charCodeAt(i)]);
|
||||
while (i < chars.length) {
|
||||
var c = this.cmap.readCharCode(chars, i);
|
||||
var charcode = c[0];
|
||||
var length = c[1];
|
||||
i += length;
|
||||
var glyph = this.charToGlyph(charcode);
|
||||
glyphs.push(glyph);
|
||||
// placing null after each word break charcode (ASCII SPACE)
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue