2958 lines
86 KiB
JavaScript
2958 lines
86 KiB
JavaScript
/**
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* @licstart The following is the entire license notice for the
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* JavaScript code in this page
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*
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* Copyright 2022 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @licend The above is the entire license notice for the
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* JavaScript code in this page
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*/
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.Font = exports.ErrorFont = void 0;
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var _util = require("../shared/util.js");
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var _cff_parser = require("./cff_parser.js");
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var _fonts_utils = require("./fonts_utils.js");
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var _unicode = require("./unicode.js");
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var _glyphlist = require("./glyphlist.js");
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var _encodings = require("./encodings.js");
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var _standard_fonts = require("./standard_fonts.js");
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var _to_unicode_map = require("./to_unicode_map.js");
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var _cff_font = require("./cff_font.js");
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var _font_renderer = require("./font_renderer.js");
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var _metrics = require("./metrics.js");
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var _glyf = require("./glyf.js");
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var _cmap = require("./cmap.js");
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var _opentype_file_builder = require("./opentype_file_builder.js");
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var _core_utils = require("./core_utils.js");
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var _stream = require("./stream.js");
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var _type1_font = require("./type1_font.js");
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const PRIVATE_USE_AREAS = [[0xe000, 0xf8ff], [0x100000, 0x10fffd]];
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const PDF_GLYPH_SPACE_UNITS = 1000;
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const EXPORT_DATA_PROPERTIES = ["ascent", "bbox", "black", "bold", "charProcOperatorList", "composite", "cssFontInfo", "data", "defaultVMetrics", "defaultWidth", "descent", "fallbackName", "fontMatrix", "fontType", "isType3Font", "italic", "loadedName", "mimetype", "missingFile", "name", "remeasure", "subtype", "type", "vertical"];
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const EXPORT_DATA_EXTRA_PROPERTIES = ["cMap", "defaultEncoding", "differences", "isMonospace", "isSerifFont", "isSymbolicFont", "seacMap", "toFontChar", "toUnicode", "vmetrics", "widths"];
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function adjustWidths(properties) {
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if (!properties.fontMatrix) {
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return;
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}
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if (properties.fontMatrix[0] === _util.FONT_IDENTITY_MATRIX[0]) {
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return;
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}
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const scale = 0.001 / properties.fontMatrix[0];
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const glyphsWidths = properties.widths;
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for (const glyph in glyphsWidths) {
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glyphsWidths[glyph] *= scale;
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}
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properties.defaultWidth *= scale;
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}
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function adjustToUnicode(properties, builtInEncoding) {
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if (properties.isInternalFont) {
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return;
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}
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if (builtInEncoding === properties.defaultEncoding) {
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return;
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}
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if (properties.toUnicode instanceof _to_unicode_map.IdentityToUnicodeMap) {
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return;
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}
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const toUnicode = [],
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glyphsUnicodeMap = (0, _glyphlist.getGlyphsUnicode)();
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for (const charCode in builtInEncoding) {
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if (properties.hasIncludedToUnicodeMap) {
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if (properties.toUnicode.has(charCode)) {
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continue;
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}
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} else if (properties.hasEncoding) {
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if (properties.differences.length === 0 || properties.differences[charCode] !== undefined) {
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continue;
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}
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}
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const glyphName = builtInEncoding[charCode];
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const unicode = (0, _unicode.getUnicodeForGlyph)(glyphName, glyphsUnicodeMap);
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if (unicode !== -1) {
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toUnicode[charCode] = String.fromCharCode(unicode);
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}
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}
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if (toUnicode.length > 0) {
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properties.toUnicode.amend(toUnicode);
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}
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}
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function amendFallbackToUnicode(properties) {
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if (!properties.fallbackToUnicode) {
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return;
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}
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if (properties.toUnicode instanceof _to_unicode_map.IdentityToUnicodeMap) {
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return;
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}
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const toUnicode = [];
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for (const charCode in properties.fallbackToUnicode) {
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if (properties.toUnicode.has(charCode)) {
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continue;
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}
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toUnicode[charCode] = properties.fallbackToUnicode[charCode];
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}
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if (toUnicode.length > 0) {
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properties.toUnicode.amend(toUnicode);
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}
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}
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class Glyph {
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constructor(originalCharCode, fontChar, unicode, accent, width, vmetric, operatorListId, isSpace, isInFont) {
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this.originalCharCode = originalCharCode;
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this.fontChar = fontChar;
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this.unicode = unicode;
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this.accent = accent;
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this.width = width;
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this.vmetric = vmetric;
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this.operatorListId = operatorListId;
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this.isSpace = isSpace;
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this.isInFont = isInFont;
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const category = (0, _unicode.getCharUnicodeCategory)(unicode);
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this.isWhitespace = category.isWhitespace;
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this.isZeroWidthDiacritic = category.isZeroWidthDiacritic;
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this.isInvisibleFormatMark = category.isInvisibleFormatMark;
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}
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matchesForCache(originalCharCode, fontChar, unicode, accent, width, vmetric, operatorListId, isSpace, isInFont) {
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return this.originalCharCode === originalCharCode && this.fontChar === fontChar && this.unicode === unicode && this.accent === accent && this.width === width && this.vmetric === vmetric && this.operatorListId === operatorListId && this.isSpace === isSpace && this.isInFont === isInFont;
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}
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}
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function int16(b0, b1) {
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return (b0 << 8) + b1;
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}
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function writeSignedInt16(bytes, index, value) {
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bytes[index + 1] = value;
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bytes[index] = value >>> 8;
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}
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function signedInt16(b0, b1) {
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const value = (b0 << 8) + b1;
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return value & 1 << 15 ? value - 0x10000 : value;
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}
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function int32(b0, b1, b2, b3) {
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return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3;
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}
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function string16(value) {
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return String.fromCharCode(value >> 8 & 0xff, value & 0xff);
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}
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function safeString16(value) {
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if (value > 0x7fff) {
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value = 0x7fff;
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} else if (value < -0x8000) {
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value = -0x8000;
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}
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return String.fromCharCode(value >> 8 & 0xff, value & 0xff);
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}
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function isTrueTypeFile(file) {
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const header = file.peekBytes(4);
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return (0, _core_utils.readUint32)(header, 0) === 0x00010000 || (0, _util.bytesToString)(header) === "true";
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}
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function isTrueTypeCollectionFile(file) {
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const header = file.peekBytes(4);
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return (0, _util.bytesToString)(header) === "ttcf";
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}
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function isOpenTypeFile(file) {
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const header = file.peekBytes(4);
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return (0, _util.bytesToString)(header) === "OTTO";
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}
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function isType1File(file) {
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const header = file.peekBytes(2);
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if (header[0] === 0x25 && header[1] === 0x21) {
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return true;
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}
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if (header[0] === 0x80 && header[1] === 0x01) {
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return true;
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}
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return false;
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}
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function isCFFFile(file) {
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const header = file.peekBytes(4);
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if (header[0] >= 1 && header[3] >= 1 && header[3] <= 4) {
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return true;
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}
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return false;
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}
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function getFontFileType(file, {
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type,
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subtype,
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composite
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}) {
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let fileType, fileSubtype;
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if (isTrueTypeFile(file) || isTrueTypeCollectionFile(file)) {
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if (composite) {
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fileType = "CIDFontType2";
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} else {
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fileType = "TrueType";
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}
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} else if (isOpenTypeFile(file)) {
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if (composite) {
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fileType = "CIDFontType2";
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} else {
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fileType = "OpenType";
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}
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} else if (isType1File(file)) {
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if (composite) {
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fileType = "CIDFontType0";
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} else {
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fileType = type === "MMType1" ? "MMType1" : "Type1";
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}
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} else if (isCFFFile(file)) {
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if (composite) {
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fileType = "CIDFontType0";
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fileSubtype = "CIDFontType0C";
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} else {
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fileType = type === "MMType1" ? "MMType1" : "Type1";
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fileSubtype = "Type1C";
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}
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} else {
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(0, _util.warn)("getFontFileType: Unable to detect correct font file Type/Subtype.");
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fileType = type;
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fileSubtype = subtype;
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}
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return [fileType, fileSubtype];
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}
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function applyStandardFontGlyphMap(map, glyphMap) {
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for (const charCode in glyphMap) {
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map[+charCode] = glyphMap[charCode];
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}
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}
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function buildToFontChar(encoding, glyphsUnicodeMap, differences) {
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const toFontChar = [];
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let unicode;
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for (let i = 0, ii = encoding.length; i < ii; i++) {
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unicode = (0, _unicode.getUnicodeForGlyph)(encoding[i], glyphsUnicodeMap);
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if (unicode !== -1) {
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toFontChar[i] = unicode;
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}
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}
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for (const charCode in differences) {
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unicode = (0, _unicode.getUnicodeForGlyph)(differences[charCode], glyphsUnicodeMap);
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if (unicode !== -1) {
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toFontChar[+charCode] = unicode;
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}
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}
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return toFontChar;
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}
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function convertCidString(charCode, cid, shouldThrow = false) {
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switch (cid.length) {
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case 1:
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return cid.charCodeAt(0);
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case 2:
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return cid.charCodeAt(0) << 8 | cid.charCodeAt(1);
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}
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const msg = `Unsupported CID string (charCode ${charCode}): "${cid}".`;
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if (shouldThrow) {
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throw new _util.FormatError(msg);
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}
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(0, _util.warn)(msg);
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return cid;
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}
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function adjustMapping(charCodeToGlyphId, hasGlyph, newGlyphZeroId, toUnicode) {
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const newMap = Object.create(null);
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const toUnicodeExtraMap = new Map();
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const toFontChar = [];
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const usedGlyphIds = new Set();
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let privateUseAreaIndex = 0;
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const privateUseOffetStart = PRIVATE_USE_AREAS[privateUseAreaIndex][0];
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let nextAvailableFontCharCode = privateUseOffetStart;
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let privateUseOffetEnd = PRIVATE_USE_AREAS[privateUseAreaIndex][1];
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for (let originalCharCode in charCodeToGlyphId) {
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originalCharCode |= 0;
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let glyphId = charCodeToGlyphId[originalCharCode];
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if (!hasGlyph(glyphId)) {
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continue;
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}
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if (nextAvailableFontCharCode > privateUseOffetEnd) {
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privateUseAreaIndex++;
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if (privateUseAreaIndex >= PRIVATE_USE_AREAS.length) {
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(0, _util.warn)("Ran out of space in font private use area.");
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break;
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}
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nextAvailableFontCharCode = PRIVATE_USE_AREAS[privateUseAreaIndex][0];
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privateUseOffetEnd = PRIVATE_USE_AREAS[privateUseAreaIndex][1];
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}
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const fontCharCode = nextAvailableFontCharCode++;
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if (glyphId === 0) {
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glyphId = newGlyphZeroId;
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}
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let unicode = toUnicode.get(originalCharCode);
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if (typeof unicode === "string") {
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unicode = unicode.codePointAt(0);
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}
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if (unicode && unicode < privateUseOffetStart && !usedGlyphIds.has(glyphId)) {
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toUnicodeExtraMap.set(unicode, glyphId);
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usedGlyphIds.add(glyphId);
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}
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newMap[fontCharCode] = glyphId;
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toFontChar[originalCharCode] = fontCharCode;
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}
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return {
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toFontChar,
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charCodeToGlyphId: newMap,
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toUnicodeExtraMap,
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nextAvailableFontCharCode
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};
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}
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function getRanges(glyphs, toUnicodeExtraMap, numGlyphs) {
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const codes = [];
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for (const charCode in glyphs) {
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if (glyphs[charCode] >= numGlyphs) {
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continue;
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}
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codes.push({
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fontCharCode: charCode | 0,
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glyphId: glyphs[charCode]
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});
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}
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if (toUnicodeExtraMap) {
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for (const [unicode, glyphId] of toUnicodeExtraMap) {
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if (glyphId >= numGlyphs) {
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continue;
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}
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codes.push({
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fontCharCode: unicode,
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glyphId
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});
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}
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}
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if (codes.length === 0) {
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codes.push({
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fontCharCode: 0,
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glyphId: 0
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});
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}
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codes.sort(function fontGetRangesSort(a, b) {
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return a.fontCharCode - b.fontCharCode;
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});
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const ranges = [];
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const length = codes.length;
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for (let n = 0; n < length;) {
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const start = codes[n].fontCharCode;
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const codeIndices = [codes[n].glyphId];
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++n;
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let end = start;
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while (n < length && end + 1 === codes[n].fontCharCode) {
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codeIndices.push(codes[n].glyphId);
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++end;
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++n;
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if (end === 0xffff) {
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break;
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}
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}
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ranges.push([start, end, codeIndices]);
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}
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return ranges;
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}
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function createCmapTable(glyphs, toUnicodeExtraMap, numGlyphs) {
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const ranges = getRanges(glyphs, toUnicodeExtraMap, numGlyphs);
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const numTables = ranges.at(-1)[1] > 0xffff ? 2 : 1;
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let cmap = "\x00\x00" + string16(numTables) + "\x00\x03" + "\x00\x01" + (0, _util.string32)(4 + numTables * 8);
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let i, ii, j, jj;
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for (i = ranges.length - 1; i >= 0; --i) {
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if (ranges[i][0] <= 0xffff) {
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break;
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}
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}
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const bmpLength = i + 1;
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if (ranges[i][0] < 0xffff && ranges[i][1] === 0xffff) {
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ranges[i][1] = 0xfffe;
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}
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const trailingRangesCount = ranges[i][1] < 0xffff ? 1 : 0;
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const segCount = bmpLength + trailingRangesCount;
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const searchParams = _opentype_file_builder.OpenTypeFileBuilder.getSearchParams(segCount, 2);
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let startCount = "";
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let endCount = "";
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let idDeltas = "";
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let idRangeOffsets = "";
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let glyphsIds = "";
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let bias = 0;
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let range, start, end, codes;
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for (i = 0, ii = bmpLength; i < ii; i++) {
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range = ranges[i];
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start = range[0];
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end = range[1];
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startCount += string16(start);
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endCount += string16(end);
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codes = range[2];
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let contiguous = true;
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for (j = 1, jj = codes.length; j < jj; ++j) {
|
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if (codes[j] !== codes[j - 1] + 1) {
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contiguous = false;
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break;
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}
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}
|
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|
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if (!contiguous) {
|
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const offset = (segCount - i) * 2 + bias * 2;
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bias += end - start + 1;
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idDeltas += string16(0);
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idRangeOffsets += string16(offset);
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for (j = 0, jj = codes.length; j < jj; ++j) {
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glyphsIds += string16(codes[j]);
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}
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} else {
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const startCode = codes[0];
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idDeltas += string16(startCode - start & 0xffff);
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idRangeOffsets += string16(0);
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}
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}
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|
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if (trailingRangesCount > 0) {
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endCount += "\xFF\xFF";
|
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startCount += "\xFF\xFF";
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idDeltas += "\x00\x01";
|
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idRangeOffsets += "\x00\x00";
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}
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const format314 = "\x00\x00" + string16(2 * segCount) + string16(searchParams.range) + string16(searchParams.entry) + string16(searchParams.rangeShift) + endCount + "\x00\x00" + startCount + idDeltas + idRangeOffsets + glyphsIds;
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let format31012 = "";
|
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let header31012 = "";
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|
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if (numTables > 1) {
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cmap += "\x00\x03" + "\x00\x0A" + (0, _util.string32)(4 + numTables * 8 + 4 + format314.length);
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format31012 = "";
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for (i = 0, ii = ranges.length; i < ii; i++) {
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range = ranges[i];
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start = range[0];
|
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codes = range[2];
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let code = codes[0];
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|
|
|
for (j = 1, jj = codes.length; j < jj; ++j) {
|
|
if (codes[j] !== codes[j - 1] + 1) {
|
|
end = range[0] + j - 1;
|
|
format31012 += (0, _util.string32)(start) + (0, _util.string32)(end) + (0, _util.string32)(code);
|
|
start = end + 1;
|
|
code = codes[j];
|
|
}
|
|
}
|
|
|
|
format31012 += (0, _util.string32)(start) + (0, _util.string32)(range[1]) + (0, _util.string32)(code);
|
|
}
|
|
|
|
header31012 = "\x00\x0C" + "\x00\x00" + (0, _util.string32)(format31012.length + 16) + "\x00\x00\x00\x00" + (0, _util.string32)(format31012.length / 12);
|
|
}
|
|
|
|
return cmap + "\x00\x04" + string16(format314.length + 4) + format314 + header31012 + format31012;
|
|
}
|
|
|
|
function validateOS2Table(os2, file) {
|
|
file.pos = (file.start || 0) + os2.offset;
|
|
const version = file.getUint16();
|
|
file.skip(60);
|
|
const selection = file.getUint16();
|
|
|
|
if (version < 4 && selection & 0x0300) {
|
|
return false;
|
|
}
|
|
|
|
const firstChar = file.getUint16();
|
|
const lastChar = file.getUint16();
|
|
|
|
if (firstChar > lastChar) {
|
|
return false;
|
|
}
|
|
|
|
file.skip(6);
|
|
const usWinAscent = file.getUint16();
|
|
|
|
if (usWinAscent === 0) {
|
|
return false;
|
|
}
|
|
|
|
os2.data[8] = os2.data[9] = 0;
|
|
return true;
|
|
}
|
|
|
|
function createOS2Table(properties, charstrings, override) {
|
|
override = override || {
|
|
unitsPerEm: 0,
|
|
yMax: 0,
|
|
yMin: 0,
|
|
ascent: 0,
|
|
descent: 0
|
|
};
|
|
let ulUnicodeRange1 = 0;
|
|
let ulUnicodeRange2 = 0;
|
|
let ulUnicodeRange3 = 0;
|
|
let ulUnicodeRange4 = 0;
|
|
let firstCharIndex = null;
|
|
let lastCharIndex = 0;
|
|
|
|
if (charstrings) {
|
|
for (let code in charstrings) {
|
|
code |= 0;
|
|
|
|
if (firstCharIndex > code || !firstCharIndex) {
|
|
firstCharIndex = code;
|
|
}
|
|
|
|
if (lastCharIndex < code) {
|
|
lastCharIndex = code;
|
|
}
|
|
|
|
const position = (0, _unicode.getUnicodeRangeFor)(code);
|
|
|
|
if (position < 32) {
|
|
ulUnicodeRange1 |= 1 << position;
|
|
} else if (position < 64) {
|
|
ulUnicodeRange2 |= 1 << position - 32;
|
|
} else if (position < 96) {
|
|
ulUnicodeRange3 |= 1 << position - 64;
|
|
} else if (position < 123) {
|
|
ulUnicodeRange4 |= 1 << position - 96;
|
|
} else {
|
|
throw new _util.FormatError("Unicode ranges Bits > 123 are reserved for internal usage");
|
|
}
|
|
}
|
|
|
|
if (lastCharIndex > 0xffff) {
|
|
lastCharIndex = 0xffff;
|
|
}
|
|
} else {
|
|
firstCharIndex = 0;
|
|
lastCharIndex = 255;
|
|
}
|
|
|
|
const bbox = properties.bbox || [0, 0, 0, 0];
|
|
const unitsPerEm = override.unitsPerEm || 1 / (properties.fontMatrix || _util.FONT_IDENTITY_MATRIX)[0];
|
|
const scale = properties.ascentScaled ? 1.0 : unitsPerEm / PDF_GLYPH_SPACE_UNITS;
|
|
const typoAscent = override.ascent || Math.round(scale * (properties.ascent || bbox[3]));
|
|
let typoDescent = override.descent || Math.round(scale * (properties.descent || bbox[1]));
|
|
|
|
if (typoDescent > 0 && properties.descent > 0 && bbox[1] < 0) {
|
|
typoDescent = -typoDescent;
|
|
}
|
|
|
|
const winAscent = override.yMax || typoAscent;
|
|
const winDescent = -override.yMin || -typoDescent;
|
|
return "\x00\x03" + "\x02\x24" + "\x01\xF4" + "\x00\x05" + "\x00\x00" + "\x02\x8A" + "\x02\xBB" + "\x00\x00" + "\x00\x8C" + "\x02\x8A" + "\x02\xBB" + "\x00\x00" + "\x01\xDF" + "\x00\x31" + "\x01\x02" + "\x00\x00" + "\x00\x00\x06" + String.fromCharCode(properties.fixedPitch ? 0x09 : 0x00) + "\x00\x00\x00\x00\x00\x00" + (0, _util.string32)(ulUnicodeRange1) + (0, _util.string32)(ulUnicodeRange2) + (0, _util.string32)(ulUnicodeRange3) + (0, _util.string32)(ulUnicodeRange4) + "\x2A\x32\x31\x2A" + string16(properties.italicAngle ? 1 : 0) + string16(firstCharIndex || properties.firstChar) + string16(lastCharIndex || properties.lastChar) + string16(typoAscent) + string16(typoDescent) + "\x00\x64" + string16(winAscent) + string16(winDescent) + "\x00\x00\x00\x00" + "\x00\x00\x00\x00" + string16(properties.xHeight) + string16(properties.capHeight) + string16(0) + string16(firstCharIndex || properties.firstChar) + "\x00\x03";
|
|
}
|
|
|
|
function createPostTable(properties) {
|
|
const angle = Math.floor(properties.italicAngle * 2 ** 16);
|
|
return "\x00\x03\x00\x00" + (0, _util.string32)(angle) + "\x00\x00" + "\x00\x00" + (0, _util.string32)(properties.fixedPitch ? 1 : 0) + "\x00\x00\x00\x00" + "\x00\x00\x00\x00" + "\x00\x00\x00\x00" + "\x00\x00\x00\x00";
|
|
}
|
|
|
|
function createPostscriptName(name) {
|
|
return name.replace(/[^\x21-\x7E]|[[\](){}<>/%]/g, "").slice(0, 63);
|
|
}
|
|
|
|
function createNameTable(name, proto) {
|
|
if (!proto) {
|
|
proto = [[], []];
|
|
}
|
|
|
|
const strings = [proto[0][0] || "Original licence", proto[0][1] || name, proto[0][2] || "Unknown", proto[0][3] || "uniqueID", proto[0][4] || name, proto[0][5] || "Version 0.11", proto[0][6] || createPostscriptName(name), proto[0][7] || "Unknown", proto[0][8] || "Unknown", proto[0][9] || "Unknown"];
|
|
const stringsUnicode = [];
|
|
let i, ii, j, jj, str;
|
|
|
|
for (i = 0, ii = strings.length; i < ii; i++) {
|
|
str = proto[1][i] || strings[i];
|
|
const strBufUnicode = [];
|
|
|
|
for (j = 0, jj = str.length; j < jj; j++) {
|
|
strBufUnicode.push(string16(str.charCodeAt(j)));
|
|
}
|
|
|
|
stringsUnicode.push(strBufUnicode.join(""));
|
|
}
|
|
|
|
const names = [strings, stringsUnicode];
|
|
const platforms = ["\x00\x01", "\x00\x03"];
|
|
const encodings = ["\x00\x00", "\x00\x01"];
|
|
const languages = ["\x00\x00", "\x04\x09"];
|
|
const namesRecordCount = strings.length * platforms.length;
|
|
let nameTable = "\x00\x00" + string16(namesRecordCount) + string16(namesRecordCount * 12 + 6);
|
|
let strOffset = 0;
|
|
|
|
for (i = 0, ii = platforms.length; i < ii; i++) {
|
|
const strs = names[i];
|
|
|
|
for (j = 0, jj = strs.length; j < jj; j++) {
|
|
str = strs[j];
|
|
const nameRecord = platforms[i] + encodings[i] + languages[i] + string16(j) + string16(str.length) + string16(strOffset);
|
|
nameTable += nameRecord;
|
|
strOffset += str.length;
|
|
}
|
|
}
|
|
|
|
nameTable += strings.join("") + stringsUnicode.join("");
|
|
return nameTable;
|
|
}
|
|
|
|
class Font {
|
|
constructor(name, file, properties) {
|
|
this.name = name;
|
|
this.psName = null;
|
|
this.mimetype = null;
|
|
this.disableFontFace = false;
|
|
this.loadedName = properties.loadedName;
|
|
this.isType3Font = properties.isType3Font;
|
|
this.missingFile = false;
|
|
this.cssFontInfo = properties.cssFontInfo;
|
|
this._charsCache = Object.create(null);
|
|
this._glyphCache = Object.create(null);
|
|
let isSerifFont = !!(properties.flags & _fonts_utils.FontFlags.Serif);
|
|
|
|
if (!isSerifFont && !properties.isSimulatedFlags) {
|
|
const baseName = name.replace(/[,_]/g, "-").split("-")[0],
|
|
serifFonts = (0, _standard_fonts.getSerifFonts)();
|
|
|
|
for (const namePart of baseName.split("+")) {
|
|
if (serifFonts[namePart]) {
|
|
isSerifFont = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
this.isSerifFont = isSerifFont;
|
|
this.isSymbolicFont = !!(properties.flags & _fonts_utils.FontFlags.Symbolic);
|
|
this.isMonospace = !!(properties.flags & _fonts_utils.FontFlags.FixedPitch);
|
|
let type = properties.type;
|
|
let subtype = properties.subtype;
|
|
this.type = type;
|
|
this.subtype = subtype;
|
|
let fallbackName = "sans-serif";
|
|
|
|
if (this.isMonospace) {
|
|
fallbackName = "monospace";
|
|
} else if (this.isSerifFont) {
|
|
fallbackName = "serif";
|
|
}
|
|
|
|
this.fallbackName = fallbackName;
|
|
this.differences = properties.differences;
|
|
this.widths = properties.widths;
|
|
this.defaultWidth = properties.defaultWidth;
|
|
this.composite = properties.composite;
|
|
this.cMap = properties.cMap;
|
|
this.capHeight = properties.capHeight / PDF_GLYPH_SPACE_UNITS;
|
|
this.ascent = properties.ascent / PDF_GLYPH_SPACE_UNITS;
|
|
this.descent = properties.descent / PDF_GLYPH_SPACE_UNITS;
|
|
this.lineHeight = this.ascent - this.descent;
|
|
this.fontMatrix = properties.fontMatrix;
|
|
this.bbox = properties.bbox;
|
|
this.defaultEncoding = properties.defaultEncoding;
|
|
this.toUnicode = properties.toUnicode;
|
|
this.toFontChar = [];
|
|
|
|
if (properties.type === "Type3") {
|
|
for (let charCode = 0; charCode < 256; charCode++) {
|
|
this.toFontChar[charCode] = this.differences[charCode] || properties.defaultEncoding[charCode];
|
|
}
|
|
|
|
this.fontType = _util.FontType.TYPE3;
|
|
return;
|
|
}
|
|
|
|
this.cidEncoding = properties.cidEncoding || "";
|
|
this.vertical = !!properties.vertical;
|
|
|
|
if (this.vertical) {
|
|
this.vmetrics = properties.vmetrics;
|
|
this.defaultVMetrics = properties.defaultVMetrics;
|
|
}
|
|
|
|
if (!file || file.isEmpty) {
|
|
if (file) {
|
|
(0, _util.warn)('Font file is empty in "' + name + '" (' + this.loadedName + ")");
|
|
}
|
|
|
|
this.fallbackToSystemFont(properties);
|
|
return;
|
|
}
|
|
|
|
[type, subtype] = getFontFileType(file, properties);
|
|
|
|
if (type !== this.type || subtype !== this.subtype) {
|
|
(0, _util.info)("Inconsistent font file Type/SubType, expected: " + `${this.type}/${this.subtype} but found: ${type}/${subtype}.`);
|
|
}
|
|
|
|
let data;
|
|
|
|
try {
|
|
switch (type) {
|
|
case "MMType1":
|
|
(0, _util.info)("MMType1 font (" + name + "), falling back to Type1.");
|
|
|
|
case "Type1":
|
|
case "CIDFontType0":
|
|
this.mimetype = "font/opentype";
|
|
const cff = subtype === "Type1C" || subtype === "CIDFontType0C" ? new _cff_font.CFFFont(file, properties) : new _type1_font.Type1Font(name, file, properties);
|
|
adjustWidths(properties);
|
|
data = this.convert(name, cff, properties);
|
|
break;
|
|
|
|
case "OpenType":
|
|
case "TrueType":
|
|
case "CIDFontType2":
|
|
this.mimetype = "font/opentype";
|
|
data = this.checkAndRepair(name, file, properties);
|
|
|
|
if (this.isOpenType) {
|
|
adjustWidths(properties);
|
|
type = "OpenType";
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
throw new _util.FormatError(`Font ${type} is not supported`);
|
|
}
|
|
} catch (e) {
|
|
(0, _util.warn)(e);
|
|
this.fallbackToSystemFont(properties);
|
|
return;
|
|
}
|
|
|
|
amendFallbackToUnicode(properties);
|
|
this.data = data;
|
|
this.fontType = (0, _fonts_utils.getFontType)(type, subtype, properties.isStandardFont);
|
|
this.fontMatrix = properties.fontMatrix;
|
|
this.widths = properties.widths;
|
|
this.defaultWidth = properties.defaultWidth;
|
|
this.toUnicode = properties.toUnicode;
|
|
this.seacMap = properties.seacMap;
|
|
}
|
|
|
|
get renderer() {
|
|
const renderer = _font_renderer.FontRendererFactory.create(this, _fonts_utils.SEAC_ANALYSIS_ENABLED);
|
|
|
|
return (0, _util.shadow)(this, "renderer", renderer);
|
|
}
|
|
|
|
exportData(extraProperties = false) {
|
|
const exportDataProperties = extraProperties ? [...EXPORT_DATA_PROPERTIES, ...EXPORT_DATA_EXTRA_PROPERTIES] : EXPORT_DATA_PROPERTIES;
|
|
const data = Object.create(null);
|
|
let property, value;
|
|
|
|
for (property of exportDataProperties) {
|
|
value = this[property];
|
|
|
|
if (value !== undefined) {
|
|
data[property] = value;
|
|
}
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
fallbackToSystemFont(properties) {
|
|
this.missingFile = true;
|
|
const name = this.name;
|
|
const type = this.type;
|
|
const subtype = this.subtype;
|
|
let fontName = (0, _fonts_utils.normalizeFontName)(name);
|
|
const stdFontMap = (0, _standard_fonts.getStdFontMap)(),
|
|
nonStdFontMap = (0, _standard_fonts.getNonStdFontMap)();
|
|
const isStandardFont = !!stdFontMap[fontName];
|
|
const isMappedToStandardFont = !!(nonStdFontMap[fontName] && stdFontMap[nonStdFontMap[fontName]]);
|
|
fontName = stdFontMap[fontName] || nonStdFontMap[fontName] || fontName;
|
|
const fontBasicMetricsMap = (0, _metrics.getFontBasicMetrics)();
|
|
const metrics = fontBasicMetricsMap[fontName];
|
|
|
|
if (metrics) {
|
|
if (isNaN(this.ascent)) {
|
|
this.ascent = metrics.ascent / PDF_GLYPH_SPACE_UNITS;
|
|
}
|
|
|
|
if (isNaN(this.descent)) {
|
|
this.descent = metrics.descent / PDF_GLYPH_SPACE_UNITS;
|
|
}
|
|
|
|
if (isNaN(this.capHeight)) {
|
|
this.capHeight = metrics.capHeight / PDF_GLYPH_SPACE_UNITS;
|
|
}
|
|
}
|
|
|
|
this.bold = fontName.search(/bold/gi) !== -1;
|
|
this.italic = fontName.search(/oblique/gi) !== -1 || fontName.search(/italic/gi) !== -1;
|
|
this.black = name.search(/Black/g) !== -1;
|
|
const isNarrow = name.search(/Narrow/g) !== -1;
|
|
this.remeasure = (!isStandardFont || isNarrow) && Object.keys(this.widths).length > 0;
|
|
|
|
if ((isStandardFont || isMappedToStandardFont) && type === "CIDFontType2" && this.cidEncoding.startsWith("Identity-")) {
|
|
const cidToGidMap = properties.cidToGidMap;
|
|
const map = [];
|
|
applyStandardFontGlyphMap(map, (0, _standard_fonts.getGlyphMapForStandardFonts)());
|
|
|
|
if (/Arial-?Black/i.test(name)) {
|
|
applyStandardFontGlyphMap(map, (0, _standard_fonts.getSupplementalGlyphMapForArialBlack)());
|
|
} else if (/Calibri/i.test(name)) {
|
|
applyStandardFontGlyphMap(map, (0, _standard_fonts.getSupplementalGlyphMapForCalibri)());
|
|
}
|
|
|
|
if (cidToGidMap) {
|
|
for (const charCode in map) {
|
|
const cid = map[charCode];
|
|
|
|
if (cidToGidMap[cid] !== undefined) {
|
|
map[+charCode] = cidToGidMap[cid];
|
|
}
|
|
}
|
|
|
|
if (cidToGidMap.length !== this.toUnicode.length && properties.hasIncludedToUnicodeMap && this.toUnicode instanceof _to_unicode_map.IdentityToUnicodeMap) {
|
|
this.toUnicode.forEach(function (charCode, unicodeCharCode) {
|
|
const cid = map[charCode];
|
|
|
|
if (cidToGidMap[cid] === undefined) {
|
|
map[+charCode] = unicodeCharCode;
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
if (!(this.toUnicode instanceof _to_unicode_map.IdentityToUnicodeMap)) {
|
|
this.toUnicode.forEach(function (charCode, unicodeCharCode) {
|
|
map[+charCode] = unicodeCharCode;
|
|
});
|
|
}
|
|
|
|
this.toFontChar = map;
|
|
this.toUnicode = new _to_unicode_map.ToUnicodeMap(map);
|
|
} else if (/Symbol/i.test(fontName)) {
|
|
this.toFontChar = buildToFontChar(_encodings.SymbolSetEncoding, (0, _glyphlist.getGlyphsUnicode)(), this.differences);
|
|
} else if (/Dingbats/i.test(fontName)) {
|
|
if (/Wingdings/i.test(name)) {
|
|
(0, _util.warn)("Non-embedded Wingdings font, falling back to ZapfDingbats.");
|
|
}
|
|
|
|
this.toFontChar = buildToFontChar(_encodings.ZapfDingbatsEncoding, (0, _glyphlist.getDingbatsGlyphsUnicode)(), this.differences);
|
|
} else if (isStandardFont) {
|
|
const map = buildToFontChar(this.defaultEncoding, (0, _glyphlist.getGlyphsUnicode)(), this.differences);
|
|
|
|
if (type === "CIDFontType2" && !this.cidEncoding.startsWith("Identity-") && !(this.toUnicode instanceof _to_unicode_map.IdentityToUnicodeMap)) {
|
|
this.toUnicode.forEach(function (charCode, unicodeCharCode) {
|
|
map[+charCode] = unicodeCharCode;
|
|
});
|
|
}
|
|
|
|
this.toFontChar = map;
|
|
} else {
|
|
const glyphsUnicodeMap = (0, _glyphlist.getGlyphsUnicode)();
|
|
const map = [];
|
|
this.toUnicode.forEach((charCode, unicodeCharCode) => {
|
|
if (!this.composite) {
|
|
const glyphName = this.differences[charCode] || this.defaultEncoding[charCode];
|
|
const unicode = (0, _unicode.getUnicodeForGlyph)(glyphName, glyphsUnicodeMap);
|
|
|
|
if (unicode !== -1) {
|
|
unicodeCharCode = unicode;
|
|
}
|
|
}
|
|
|
|
map[+charCode] = unicodeCharCode;
|
|
});
|
|
|
|
if (this.composite && this.toUnicode instanceof _to_unicode_map.IdentityToUnicodeMap) {
|
|
if (/Verdana/i.test(name)) {
|
|
applyStandardFontGlyphMap(map, (0, _standard_fonts.getGlyphMapForStandardFonts)());
|
|
}
|
|
}
|
|
|
|
this.toFontChar = map;
|
|
}
|
|
|
|
amendFallbackToUnicode(properties);
|
|
this.loadedName = fontName.split("-")[0];
|
|
this.fontType = (0, _fonts_utils.getFontType)(type, subtype, properties.isStandardFont);
|
|
}
|
|
|
|
checkAndRepair(name, font, properties) {
|
|
const VALID_TABLES = ["OS/2", "cmap", "head", "hhea", "hmtx", "maxp", "name", "post", "loca", "glyf", "fpgm", "prep", "cvt ", "CFF "];
|
|
|
|
function readTables(file, numTables) {
|
|
const tables = Object.create(null);
|
|
tables["OS/2"] = null;
|
|
tables.cmap = null;
|
|
tables.head = null;
|
|
tables.hhea = null;
|
|
tables.hmtx = null;
|
|
tables.maxp = null;
|
|
tables.name = null;
|
|
tables.post = null;
|
|
|
|
for (let i = 0; i < numTables; i++) {
|
|
const table = readTableEntry(file);
|
|
|
|
if (!VALID_TABLES.includes(table.tag)) {
|
|
continue;
|
|
}
|
|
|
|
if (table.length === 0) {
|
|
continue;
|
|
}
|
|
|
|
tables[table.tag] = table;
|
|
}
|
|
|
|
return tables;
|
|
}
|
|
|
|
function readTableEntry(file) {
|
|
const tag = file.getString(4);
|
|
const checksum = file.getInt32() >>> 0;
|
|
const offset = file.getInt32() >>> 0;
|
|
const length = file.getInt32() >>> 0;
|
|
const previousPosition = file.pos;
|
|
file.pos = file.start || 0;
|
|
file.skip(offset);
|
|
const data = file.getBytes(length);
|
|
file.pos = previousPosition;
|
|
|
|
if (tag === "head") {
|
|
data[8] = data[9] = data[10] = data[11] = 0;
|
|
data[17] |= 0x20;
|
|
}
|
|
|
|
return {
|
|
tag,
|
|
checksum,
|
|
length,
|
|
offset,
|
|
data
|
|
};
|
|
}
|
|
|
|
function readOpenTypeHeader(ttf) {
|
|
return {
|
|
version: ttf.getString(4),
|
|
numTables: ttf.getUint16(),
|
|
searchRange: ttf.getUint16(),
|
|
entrySelector: ttf.getUint16(),
|
|
rangeShift: ttf.getUint16()
|
|
};
|
|
}
|
|
|
|
function readTrueTypeCollectionHeader(ttc) {
|
|
const ttcTag = ttc.getString(4);
|
|
(0, _util.assert)(ttcTag === "ttcf", "Must be a TrueType Collection font.");
|
|
const majorVersion = ttc.getUint16();
|
|
const minorVersion = ttc.getUint16();
|
|
const numFonts = ttc.getInt32() >>> 0;
|
|
const offsetTable = [];
|
|
|
|
for (let i = 0; i < numFonts; i++) {
|
|
offsetTable.push(ttc.getInt32() >>> 0);
|
|
}
|
|
|
|
const header = {
|
|
ttcTag,
|
|
majorVersion,
|
|
minorVersion,
|
|
numFonts,
|
|
offsetTable
|
|
};
|
|
|
|
switch (majorVersion) {
|
|
case 1:
|
|
return header;
|
|
|
|
case 2:
|
|
header.dsigTag = ttc.getInt32() >>> 0;
|
|
header.dsigLength = ttc.getInt32() >>> 0;
|
|
header.dsigOffset = ttc.getInt32() >>> 0;
|
|
return header;
|
|
}
|
|
|
|
throw new _util.FormatError(`Invalid TrueType Collection majorVersion: ${majorVersion}.`);
|
|
}
|
|
|
|
function readTrueTypeCollectionData(ttc, fontName) {
|
|
const {
|
|
numFonts,
|
|
offsetTable
|
|
} = readTrueTypeCollectionHeader(ttc);
|
|
const fontNameParts = fontName.split("+");
|
|
let fallbackData;
|
|
|
|
for (let i = 0; i < numFonts; i++) {
|
|
ttc.pos = (ttc.start || 0) + offsetTable[i];
|
|
const potentialHeader = readOpenTypeHeader(ttc);
|
|
const potentialTables = readTables(ttc, potentialHeader.numTables);
|
|
|
|
if (!potentialTables.name) {
|
|
throw new _util.FormatError('TrueType Collection font must contain a "name" table.');
|
|
}
|
|
|
|
const nameTable = readNameTable(potentialTables.name);
|
|
|
|
for (let j = 0, jj = nameTable.length; j < jj; j++) {
|
|
for (let k = 0, kk = nameTable[j].length; k < kk; k++) {
|
|
const nameEntry = nameTable[j][k] && nameTable[j][k].replace(/\s/g, "");
|
|
|
|
if (!nameEntry) {
|
|
continue;
|
|
}
|
|
|
|
if (nameEntry === fontName) {
|
|
return {
|
|
header: potentialHeader,
|
|
tables: potentialTables
|
|
};
|
|
}
|
|
|
|
if (fontNameParts.length < 2) {
|
|
continue;
|
|
}
|
|
|
|
for (const part of fontNameParts) {
|
|
if (nameEntry === part) {
|
|
fallbackData = {
|
|
name: part,
|
|
header: potentialHeader,
|
|
tables: potentialTables
|
|
};
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (fallbackData) {
|
|
(0, _util.warn)(`TrueType Collection does not contain "${fontName}" font, ` + `falling back to "${fallbackData.name}" font instead.`);
|
|
return {
|
|
header: fallbackData.header,
|
|
tables: fallbackData.tables
|
|
};
|
|
}
|
|
|
|
throw new _util.FormatError(`TrueType Collection does not contain "${fontName}" font.`);
|
|
}
|
|
|
|
function readCmapTable(cmap, file, isSymbolicFont, hasEncoding) {
|
|
if (!cmap) {
|
|
(0, _util.warn)("No cmap table available.");
|
|
return {
|
|
platformId: -1,
|
|
encodingId: -1,
|
|
mappings: [],
|
|
hasShortCmap: false
|
|
};
|
|
}
|
|
|
|
let segment;
|
|
let start = (file.start || 0) + cmap.offset;
|
|
file.pos = start;
|
|
file.skip(2);
|
|
const numTables = file.getUint16();
|
|
let potentialTable;
|
|
let canBreak = false;
|
|
|
|
for (let i = 0; i < numTables; i++) {
|
|
const platformId = file.getUint16();
|
|
const encodingId = file.getUint16();
|
|
const offset = file.getInt32() >>> 0;
|
|
let useTable = false;
|
|
|
|
if (potentialTable && potentialTable.platformId === platformId && potentialTable.encodingId === encodingId) {
|
|
continue;
|
|
}
|
|
|
|
if (platformId === 0 && (encodingId === 0 || encodingId === 1 || encodingId === 3)) {
|
|
useTable = true;
|
|
} else if (platformId === 1 && encodingId === 0) {
|
|
useTable = true;
|
|
} else if (platformId === 3 && encodingId === 1 && (hasEncoding || !potentialTable)) {
|
|
useTable = true;
|
|
|
|
if (!isSymbolicFont) {
|
|
canBreak = true;
|
|
}
|
|
} else if (isSymbolicFont && platformId === 3 && encodingId === 0) {
|
|
useTable = true;
|
|
let correctlySorted = true;
|
|
|
|
if (i < numTables - 1) {
|
|
const nextBytes = file.peekBytes(2),
|
|
nextPlatformId = int16(nextBytes[0], nextBytes[1]);
|
|
|
|
if (nextPlatformId < platformId) {
|
|
correctlySorted = false;
|
|
}
|
|
}
|
|
|
|
if (correctlySorted) {
|
|
canBreak = true;
|
|
}
|
|
}
|
|
|
|
if (useTable) {
|
|
potentialTable = {
|
|
platformId,
|
|
encodingId,
|
|
offset
|
|
};
|
|
}
|
|
|
|
if (canBreak) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (potentialTable) {
|
|
file.pos = start + potentialTable.offset;
|
|
}
|
|
|
|
if (!potentialTable || file.peekByte() === -1) {
|
|
(0, _util.warn)("Could not find a preferred cmap table.");
|
|
return {
|
|
platformId: -1,
|
|
encodingId: -1,
|
|
mappings: [],
|
|
hasShortCmap: false
|
|
};
|
|
}
|
|
|
|
const format = file.getUint16();
|
|
let hasShortCmap = false;
|
|
const mappings = [];
|
|
let j, glyphId;
|
|
|
|
if (format === 0) {
|
|
file.skip(2 + 2);
|
|
|
|
for (j = 0; j < 256; j++) {
|
|
const index = file.getByte();
|
|
|
|
if (!index) {
|
|
continue;
|
|
}
|
|
|
|
mappings.push({
|
|
charCode: j,
|
|
glyphId: index
|
|
});
|
|
}
|
|
|
|
hasShortCmap = true;
|
|
} else if (format === 2) {
|
|
file.skip(2 + 2);
|
|
const subHeaderKeys = [];
|
|
let maxSubHeaderKey = 0;
|
|
|
|
for (let i = 0; i < 256; i++) {
|
|
const subHeaderKey = file.getUint16() >> 3;
|
|
subHeaderKeys.push(subHeaderKey);
|
|
maxSubHeaderKey = Math.max(subHeaderKey, maxSubHeaderKey);
|
|
}
|
|
|
|
const subHeaders = [];
|
|
|
|
for (let i = 0; i <= maxSubHeaderKey; i++) {
|
|
subHeaders.push({
|
|
firstCode: file.getUint16(),
|
|
entryCount: file.getUint16(),
|
|
idDelta: signedInt16(file.getByte(), file.getByte()),
|
|
idRangePos: file.pos + file.getUint16()
|
|
});
|
|
}
|
|
|
|
for (let i = 0; i < 256; i++) {
|
|
if (subHeaderKeys[i] === 0) {
|
|
file.pos = subHeaders[0].idRangePos + 2 * i;
|
|
glyphId = file.getUint16();
|
|
mappings.push({
|
|
charCode: i,
|
|
glyphId
|
|
});
|
|
} else {
|
|
const s = subHeaders[subHeaderKeys[i]];
|
|
|
|
for (j = 0; j < s.entryCount; j++) {
|
|
const charCode = (i << 8) + j + s.firstCode;
|
|
file.pos = s.idRangePos + 2 * j;
|
|
glyphId = file.getUint16();
|
|
|
|
if (glyphId !== 0) {
|
|
glyphId = (glyphId + s.idDelta) % 65536;
|
|
}
|
|
|
|
mappings.push({
|
|
charCode,
|
|
glyphId
|
|
});
|
|
}
|
|
}
|
|
}
|
|
} else if (format === 4) {
|
|
file.skip(2 + 2);
|
|
const segCount = file.getUint16() >> 1;
|
|
file.skip(6);
|
|
const segments = [];
|
|
let segIndex;
|
|
|
|
for (segIndex = 0; segIndex < segCount; segIndex++) {
|
|
segments.push({
|
|
end: file.getUint16()
|
|
});
|
|
}
|
|
|
|
file.skip(2);
|
|
|
|
for (segIndex = 0; segIndex < segCount; segIndex++) {
|
|
segments[segIndex].start = file.getUint16();
|
|
}
|
|
|
|
for (segIndex = 0; segIndex < segCount; segIndex++) {
|
|
segments[segIndex].delta = file.getUint16();
|
|
}
|
|
|
|
let offsetsCount = 0,
|
|
offsetIndex;
|
|
|
|
for (segIndex = 0; segIndex < segCount; segIndex++) {
|
|
segment = segments[segIndex];
|
|
const rangeOffset = file.getUint16();
|
|
|
|
if (!rangeOffset) {
|
|
segment.offsetIndex = -1;
|
|
continue;
|
|
}
|
|
|
|
offsetIndex = (rangeOffset >> 1) - (segCount - segIndex);
|
|
segment.offsetIndex = offsetIndex;
|
|
offsetsCount = Math.max(offsetsCount, offsetIndex + segment.end - segment.start + 1);
|
|
}
|
|
|
|
const offsets = [];
|
|
|
|
for (j = 0; j < offsetsCount; j++) {
|
|
offsets.push(file.getUint16());
|
|
}
|
|
|
|
for (segIndex = 0; segIndex < segCount; segIndex++) {
|
|
segment = segments[segIndex];
|
|
start = segment.start;
|
|
const end = segment.end;
|
|
const delta = segment.delta;
|
|
offsetIndex = segment.offsetIndex;
|
|
|
|
for (j = start; j <= end; j++) {
|
|
if (j === 0xffff) {
|
|
continue;
|
|
}
|
|
|
|
glyphId = offsetIndex < 0 ? j : offsets[offsetIndex + j - start];
|
|
glyphId = glyphId + delta & 0xffff;
|
|
mappings.push({
|
|
charCode: j,
|
|
glyphId
|
|
});
|
|
}
|
|
}
|
|
} else if (format === 6) {
|
|
file.skip(2 + 2);
|
|
const firstCode = file.getUint16();
|
|
const entryCount = file.getUint16();
|
|
|
|
for (j = 0; j < entryCount; j++) {
|
|
glyphId = file.getUint16();
|
|
const charCode = firstCode + j;
|
|
mappings.push({
|
|
charCode,
|
|
glyphId
|
|
});
|
|
}
|
|
} else if (format === 12) {
|
|
file.skip(2 + 4 + 4);
|
|
const nGroups = file.getInt32() >>> 0;
|
|
|
|
for (j = 0; j < nGroups; j++) {
|
|
const startCharCode = file.getInt32() >>> 0;
|
|
const endCharCode = file.getInt32() >>> 0;
|
|
let glyphCode = file.getInt32() >>> 0;
|
|
|
|
for (let charCode = startCharCode; charCode <= endCharCode; charCode++) {
|
|
mappings.push({
|
|
charCode,
|
|
glyphId: glyphCode++
|
|
});
|
|
}
|
|
}
|
|
} else {
|
|
(0, _util.warn)("cmap table has unsupported format: " + format);
|
|
return {
|
|
platformId: -1,
|
|
encodingId: -1,
|
|
mappings: [],
|
|
hasShortCmap: false
|
|
};
|
|
}
|
|
|
|
mappings.sort(function (a, b) {
|
|
return a.charCode - b.charCode;
|
|
});
|
|
|
|
for (let i = 1; i < mappings.length; i++) {
|
|
if (mappings[i - 1].charCode === mappings[i].charCode) {
|
|
mappings.splice(i, 1);
|
|
i--;
|
|
}
|
|
}
|
|
|
|
return {
|
|
platformId: potentialTable.platformId,
|
|
encodingId: potentialTable.encodingId,
|
|
mappings,
|
|
hasShortCmap
|
|
};
|
|
}
|
|
|
|
function sanitizeMetrics(file, header, metrics, headTable, numGlyphs, dupFirstEntry) {
|
|
if (!header) {
|
|
if (metrics) {
|
|
metrics.data = null;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
file.pos = (file.start || 0) + header.offset;
|
|
file.pos += 4;
|
|
file.pos += 2;
|
|
file.pos += 2;
|
|
file.pos += 2;
|
|
file.pos += 2;
|
|
file.pos += 2;
|
|
file.pos += 2;
|
|
file.pos += 2;
|
|
file.pos += 2;
|
|
file.pos += 2;
|
|
const caretOffset = file.getUint16();
|
|
file.pos += 8;
|
|
file.pos += 2;
|
|
let numOfMetrics = file.getUint16();
|
|
|
|
if (caretOffset !== 0) {
|
|
const macStyle = int16(headTable.data[44], headTable.data[45]);
|
|
|
|
if (!(macStyle & 2)) {
|
|
header.data[22] = 0;
|
|
header.data[23] = 0;
|
|
}
|
|
}
|
|
|
|
if (numOfMetrics > numGlyphs) {
|
|
(0, _util.info)(`The numOfMetrics (${numOfMetrics}) should not be ` + `greater than the numGlyphs (${numGlyphs}).`);
|
|
numOfMetrics = numGlyphs;
|
|
header.data[34] = (numOfMetrics & 0xff00) >> 8;
|
|
header.data[35] = numOfMetrics & 0x00ff;
|
|
}
|
|
|
|
const numOfSidebearings = numGlyphs - numOfMetrics;
|
|
const numMissing = numOfSidebearings - (metrics.length - numOfMetrics * 4 >> 1);
|
|
|
|
if (numMissing > 0) {
|
|
const entries = new Uint8Array(metrics.length + numMissing * 2);
|
|
entries.set(metrics.data);
|
|
|
|
if (dupFirstEntry) {
|
|
entries[metrics.length] = metrics.data[2];
|
|
entries[metrics.length + 1] = metrics.data[3];
|
|
}
|
|
|
|
metrics.data = entries;
|
|
}
|
|
}
|
|
|
|
function sanitizeGlyph(source, sourceStart, sourceEnd, dest, destStart, hintsValid) {
|
|
const glyphProfile = {
|
|
length: 0,
|
|
sizeOfInstructions: 0
|
|
};
|
|
|
|
if (sourceEnd - sourceStart <= 12) {
|
|
return glyphProfile;
|
|
}
|
|
|
|
const glyf = source.subarray(sourceStart, sourceEnd);
|
|
let contoursCount = signedInt16(glyf[0], glyf[1]);
|
|
|
|
if (contoursCount < 0) {
|
|
contoursCount = -1;
|
|
writeSignedInt16(glyf, 0, contoursCount);
|
|
dest.set(glyf, destStart);
|
|
glyphProfile.length = glyf.length;
|
|
return glyphProfile;
|
|
}
|
|
|
|
let i,
|
|
j = 10,
|
|
flagsCount = 0;
|
|
|
|
for (i = 0; i < contoursCount; i++) {
|
|
const endPoint = glyf[j] << 8 | glyf[j + 1];
|
|
flagsCount = endPoint + 1;
|
|
j += 2;
|
|
}
|
|
|
|
const instructionsStart = j;
|
|
const instructionsLength = glyf[j] << 8 | glyf[j + 1];
|
|
glyphProfile.sizeOfInstructions = instructionsLength;
|
|
j += 2 + instructionsLength;
|
|
const instructionsEnd = j;
|
|
let coordinatesLength = 0;
|
|
|
|
for (i = 0; i < flagsCount; i++) {
|
|
const flag = glyf[j++];
|
|
|
|
if (flag & 0xc0) {
|
|
glyf[j - 1] = flag & 0x3f;
|
|
}
|
|
|
|
let xLength = 2;
|
|
|
|
if (flag & 2) {
|
|
xLength = 1;
|
|
} else if (flag & 16) {
|
|
xLength = 0;
|
|
}
|
|
|
|
let yLength = 2;
|
|
|
|
if (flag & 4) {
|
|
yLength = 1;
|
|
} else if (flag & 32) {
|
|
yLength = 0;
|
|
}
|
|
|
|
const xyLength = xLength + yLength;
|
|
coordinatesLength += xyLength;
|
|
|
|
if (flag & 8) {
|
|
const repeat = glyf[j++];
|
|
i += repeat;
|
|
coordinatesLength += repeat * xyLength;
|
|
}
|
|
}
|
|
|
|
if (coordinatesLength === 0) {
|
|
return glyphProfile;
|
|
}
|
|
|
|
let glyphDataLength = j + coordinatesLength;
|
|
|
|
if (glyphDataLength > glyf.length) {
|
|
return glyphProfile;
|
|
}
|
|
|
|
if (!hintsValid && instructionsLength > 0) {
|
|
dest.set(glyf.subarray(0, instructionsStart), destStart);
|
|
dest.set([0, 0], destStart + instructionsStart);
|
|
dest.set(glyf.subarray(instructionsEnd, glyphDataLength), destStart + instructionsStart + 2);
|
|
glyphDataLength -= instructionsLength;
|
|
|
|
if (glyf.length - glyphDataLength > 3) {
|
|
glyphDataLength = glyphDataLength + 3 & ~3;
|
|
}
|
|
|
|
glyphProfile.length = glyphDataLength;
|
|
return glyphProfile;
|
|
}
|
|
|
|
if (glyf.length - glyphDataLength > 3) {
|
|
glyphDataLength = glyphDataLength + 3 & ~3;
|
|
dest.set(glyf.subarray(0, glyphDataLength), destStart);
|
|
glyphProfile.length = glyphDataLength;
|
|
return glyphProfile;
|
|
}
|
|
|
|
dest.set(glyf, destStart);
|
|
glyphProfile.length = glyf.length;
|
|
return glyphProfile;
|
|
}
|
|
|
|
function sanitizeHead(head, numGlyphs, locaLength) {
|
|
const data = head.data;
|
|
const version = int32(data[0], data[1], data[2], data[3]);
|
|
|
|
if (version >> 16 !== 1) {
|
|
(0, _util.info)("Attempting to fix invalid version in head table: " + version);
|
|
data[0] = 0;
|
|
data[1] = 1;
|
|
data[2] = 0;
|
|
data[3] = 0;
|
|
}
|
|
|
|
const indexToLocFormat = int16(data[50], data[51]);
|
|
|
|
if (indexToLocFormat < 0 || indexToLocFormat > 1) {
|
|
(0, _util.info)("Attempting to fix invalid indexToLocFormat in head table: " + indexToLocFormat);
|
|
const numGlyphsPlusOne = numGlyphs + 1;
|
|
|
|
if (locaLength === numGlyphsPlusOne << 1) {
|
|
data[50] = 0;
|
|
data[51] = 0;
|
|
} else if (locaLength === numGlyphsPlusOne << 2) {
|
|
data[50] = 0;
|
|
data[51] = 1;
|
|
} else {
|
|
throw new _util.FormatError("Could not fix indexToLocFormat: " + indexToLocFormat);
|
|
}
|
|
}
|
|
}
|
|
|
|
function sanitizeGlyphLocations(loca, glyf, numGlyphs, isGlyphLocationsLong, hintsValid, dupFirstEntry, maxSizeOfInstructions) {
|
|
let itemSize, itemDecode, itemEncode;
|
|
|
|
if (isGlyphLocationsLong) {
|
|
itemSize = 4;
|
|
|
|
itemDecode = function fontItemDecodeLong(data, offset) {
|
|
return data[offset] << 24 | data[offset + 1] << 16 | data[offset + 2] << 8 | data[offset + 3];
|
|
};
|
|
|
|
itemEncode = function fontItemEncodeLong(data, offset, value) {
|
|
data[offset] = value >>> 24 & 0xff;
|
|
data[offset + 1] = value >> 16 & 0xff;
|
|
data[offset + 2] = value >> 8 & 0xff;
|
|
data[offset + 3] = value & 0xff;
|
|
};
|
|
} else {
|
|
itemSize = 2;
|
|
|
|
itemDecode = function fontItemDecode(data, offset) {
|
|
return data[offset] << 9 | data[offset + 1] << 1;
|
|
};
|
|
|
|
itemEncode = function fontItemEncode(data, offset, value) {
|
|
data[offset] = value >> 9 & 0xff;
|
|
data[offset + 1] = value >> 1 & 0xff;
|
|
};
|
|
}
|
|
|
|
const numGlyphsOut = dupFirstEntry ? numGlyphs + 1 : numGlyphs;
|
|
const locaDataSize = itemSize * (1 + numGlyphsOut);
|
|
const locaData = new Uint8Array(locaDataSize);
|
|
locaData.set(loca.data.subarray(0, locaDataSize));
|
|
loca.data = locaData;
|
|
const oldGlyfData = glyf.data;
|
|
const oldGlyfDataLength = oldGlyfData.length;
|
|
const newGlyfData = new Uint8Array(oldGlyfDataLength);
|
|
let i, j;
|
|
const locaEntries = [];
|
|
|
|
for (i = 0, j = 0; i < numGlyphs + 1; i++, j += itemSize) {
|
|
let offset = itemDecode(locaData, j);
|
|
|
|
if (offset > oldGlyfDataLength) {
|
|
offset = oldGlyfDataLength;
|
|
}
|
|
|
|
locaEntries.push({
|
|
index: i,
|
|
offset,
|
|
endOffset: 0
|
|
});
|
|
}
|
|
|
|
locaEntries.sort((a, b) => {
|
|
return a.offset - b.offset;
|
|
});
|
|
|
|
for (i = 0; i < numGlyphs; i++) {
|
|
locaEntries[i].endOffset = locaEntries[i + 1].offset;
|
|
}
|
|
|
|
locaEntries.sort((a, b) => {
|
|
return a.index - b.index;
|
|
});
|
|
|
|
for (i = 0; i < numGlyphs; i++) {
|
|
const {
|
|
offset,
|
|
endOffset
|
|
} = locaEntries[i];
|
|
|
|
if (offset !== 0 || endOffset !== 0) {
|
|
break;
|
|
}
|
|
|
|
const nextOffset = locaEntries[i + 1].offset;
|
|
|
|
if (nextOffset === 0) {
|
|
continue;
|
|
}
|
|
|
|
locaEntries[i].endOffset = nextOffset;
|
|
break;
|
|
}
|
|
|
|
const missingGlyphs = Object.create(null);
|
|
let writeOffset = 0;
|
|
itemEncode(locaData, 0, writeOffset);
|
|
|
|
for (i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) {
|
|
const glyphProfile = sanitizeGlyph(oldGlyfData, locaEntries[i].offset, locaEntries[i].endOffset, newGlyfData, writeOffset, hintsValid);
|
|
const newLength = glyphProfile.length;
|
|
|
|
if (newLength === 0) {
|
|
missingGlyphs[i] = true;
|
|
}
|
|
|
|
if (glyphProfile.sizeOfInstructions > maxSizeOfInstructions) {
|
|
maxSizeOfInstructions = glyphProfile.sizeOfInstructions;
|
|
}
|
|
|
|
writeOffset += newLength;
|
|
itemEncode(locaData, j, writeOffset);
|
|
}
|
|
|
|
if (writeOffset === 0) {
|
|
const simpleGlyph = new Uint8Array([0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 49, 0]);
|
|
|
|
for (i = 0, j = itemSize; i < numGlyphsOut; i++, j += itemSize) {
|
|
itemEncode(locaData, j, simpleGlyph.length);
|
|
}
|
|
|
|
glyf.data = simpleGlyph;
|
|
} else if (dupFirstEntry) {
|
|
const firstEntryLength = itemDecode(locaData, itemSize);
|
|
|
|
if (newGlyfData.length > firstEntryLength + writeOffset) {
|
|
glyf.data = newGlyfData.subarray(0, firstEntryLength + writeOffset);
|
|
} else {
|
|
glyf.data = new Uint8Array(firstEntryLength + writeOffset);
|
|
glyf.data.set(newGlyfData.subarray(0, writeOffset));
|
|
}
|
|
|
|
glyf.data.set(newGlyfData.subarray(0, firstEntryLength), writeOffset);
|
|
itemEncode(loca.data, locaData.length - itemSize, writeOffset + firstEntryLength);
|
|
} else {
|
|
glyf.data = newGlyfData.subarray(0, writeOffset);
|
|
}
|
|
|
|
return {
|
|
missingGlyphs,
|
|
maxSizeOfInstructions
|
|
};
|
|
}
|
|
|
|
function readPostScriptTable(post, propertiesObj, maxpNumGlyphs) {
|
|
const start = (font.start || 0) + post.offset;
|
|
font.pos = start;
|
|
const length = post.length,
|
|
end = start + length;
|
|
const version = font.getInt32();
|
|
font.skip(28);
|
|
let glyphNames;
|
|
let valid = true;
|
|
let i;
|
|
|
|
switch (version) {
|
|
case 0x00010000:
|
|
glyphNames = _fonts_utils.MacStandardGlyphOrdering;
|
|
break;
|
|
|
|
case 0x00020000:
|
|
const numGlyphs = font.getUint16();
|
|
|
|
if (numGlyphs !== maxpNumGlyphs) {
|
|
valid = false;
|
|
break;
|
|
}
|
|
|
|
const glyphNameIndexes = [];
|
|
|
|
for (i = 0; i < numGlyphs; ++i) {
|
|
const index = font.getUint16();
|
|
|
|
if (index >= 32768) {
|
|
valid = false;
|
|
break;
|
|
}
|
|
|
|
glyphNameIndexes.push(index);
|
|
}
|
|
|
|
if (!valid) {
|
|
break;
|
|
}
|
|
|
|
const customNames = [],
|
|
strBuf = [];
|
|
|
|
while (font.pos < end) {
|
|
const stringLength = font.getByte();
|
|
strBuf.length = stringLength;
|
|
|
|
for (i = 0; i < stringLength; ++i) {
|
|
strBuf[i] = String.fromCharCode(font.getByte());
|
|
}
|
|
|
|
customNames.push(strBuf.join(""));
|
|
}
|
|
|
|
glyphNames = [];
|
|
|
|
for (i = 0; i < numGlyphs; ++i) {
|
|
const j = glyphNameIndexes[i];
|
|
|
|
if (j < 258) {
|
|
glyphNames.push(_fonts_utils.MacStandardGlyphOrdering[j]);
|
|
continue;
|
|
}
|
|
|
|
glyphNames.push(customNames[j - 258]);
|
|
}
|
|
|
|
break;
|
|
|
|
case 0x00030000:
|
|
break;
|
|
|
|
default:
|
|
(0, _util.warn)("Unknown/unsupported post table version " + version);
|
|
valid = false;
|
|
|
|
if (propertiesObj.defaultEncoding) {
|
|
glyphNames = propertiesObj.defaultEncoding;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
propertiesObj.glyphNames = glyphNames;
|
|
return valid;
|
|
}
|
|
|
|
function readNameTable(nameTable) {
|
|
const start = (font.start || 0) + nameTable.offset;
|
|
font.pos = start;
|
|
const names = [[], []];
|
|
const length = nameTable.length,
|
|
end = start + length;
|
|
const format = font.getUint16();
|
|
const FORMAT_0_HEADER_LENGTH = 6;
|
|
|
|
if (format !== 0 || length < FORMAT_0_HEADER_LENGTH) {
|
|
return names;
|
|
}
|
|
|
|
const numRecords = font.getUint16();
|
|
const stringsStart = font.getUint16();
|
|
const records = [];
|
|
const NAME_RECORD_LENGTH = 12;
|
|
let i, ii;
|
|
|
|
for (i = 0; i < numRecords && font.pos + NAME_RECORD_LENGTH <= end; i++) {
|
|
const r = {
|
|
platform: font.getUint16(),
|
|
encoding: font.getUint16(),
|
|
language: font.getUint16(),
|
|
name: font.getUint16(),
|
|
length: font.getUint16(),
|
|
offset: font.getUint16()
|
|
};
|
|
|
|
if (r.platform === 1 && r.encoding === 0 && r.language === 0 || r.platform === 3 && r.encoding === 1 && r.language === 0x409) {
|
|
records.push(r);
|
|
}
|
|
}
|
|
|
|
for (i = 0, ii = records.length; i < ii; i++) {
|
|
const record = records[i];
|
|
|
|
if (record.length <= 0) {
|
|
continue;
|
|
}
|
|
|
|
const pos = start + stringsStart + record.offset;
|
|
|
|
if (pos + record.length > end) {
|
|
continue;
|
|
}
|
|
|
|
font.pos = pos;
|
|
const nameIndex = record.name;
|
|
|
|
if (record.encoding) {
|
|
let str = "";
|
|
|
|
for (let j = 0, jj = record.length; j < jj; j += 2) {
|
|
str += String.fromCharCode(font.getUint16());
|
|
}
|
|
|
|
names[1][nameIndex] = str;
|
|
} else {
|
|
names[0][nameIndex] = font.getString(record.length);
|
|
}
|
|
}
|
|
|
|
return names;
|
|
}
|
|
|
|
const TTOpsStackDeltas = [0, 0, 0, 0, 0, 0, 0, 0, -2, -2, -2, -2, 0, 0, -2, -5, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, -1, 0, -1, -1, -1, -1, 1, -1, -999, 0, 1, 0, -1, -2, 0, -1, -2, -1, -1, 0, -1, -1, 0, 0, -999, -999, -1, -1, -1, -1, -2, -999, -2, -2, -999, 0, -2, -2, 0, 0, -2, 0, -2, 0, 0, 0, -2, -1, -1, 1, 1, 0, 0, -1, -1, -1, -1, -1, -1, -1, 0, 0, -1, 0, -1, -1, 0, -999, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -2, -999, -999, -999, -999, -999, -1, -1, -2, -2, 0, 0, 0, 0, -1, -1, -999, -2, -2, 0, 0, -1, -2, -2, 0, 0, 0, -1, -1, -1, -2];
|
|
|
|
function sanitizeTTProgram(table, ttContext) {
|
|
let data = table.data;
|
|
let i = 0,
|
|
j,
|
|
n,
|
|
b,
|
|
funcId,
|
|
pc,
|
|
lastEndf = 0,
|
|
lastDeff = 0;
|
|
const stack = [];
|
|
const callstack = [];
|
|
const functionsCalled = [];
|
|
let tooComplexToFollowFunctions = ttContext.tooComplexToFollowFunctions;
|
|
let inFDEF = false,
|
|
ifLevel = 0,
|
|
inELSE = 0;
|
|
|
|
for (let ii = data.length; i < ii;) {
|
|
const op = data[i++];
|
|
|
|
if (op === 0x40) {
|
|
n = data[i++];
|
|
|
|
if (inFDEF || inELSE) {
|
|
i += n;
|
|
} else {
|
|
for (j = 0; j < n; j++) {
|
|
stack.push(data[i++]);
|
|
}
|
|
}
|
|
} else if (op === 0x41) {
|
|
n = data[i++];
|
|
|
|
if (inFDEF || inELSE) {
|
|
i += n * 2;
|
|
} else {
|
|
for (j = 0; j < n; j++) {
|
|
b = data[i++];
|
|
stack.push(b << 8 | data[i++]);
|
|
}
|
|
}
|
|
} else if ((op & 0xf8) === 0xb0) {
|
|
n = op - 0xb0 + 1;
|
|
|
|
if (inFDEF || inELSE) {
|
|
i += n;
|
|
} else {
|
|
for (j = 0; j < n; j++) {
|
|
stack.push(data[i++]);
|
|
}
|
|
}
|
|
} else if ((op & 0xf8) === 0xb8) {
|
|
n = op - 0xb8 + 1;
|
|
|
|
if (inFDEF || inELSE) {
|
|
i += n * 2;
|
|
} else {
|
|
for (j = 0; j < n; j++) {
|
|
b = data[i++];
|
|
stack.push(b << 8 | data[i++]);
|
|
}
|
|
}
|
|
} else if (op === 0x2b && !tooComplexToFollowFunctions) {
|
|
if (!inFDEF && !inELSE) {
|
|
funcId = stack.at(-1);
|
|
|
|
if (isNaN(funcId)) {
|
|
(0, _util.info)("TT: CALL empty stack (or invalid entry).");
|
|
} else {
|
|
ttContext.functionsUsed[funcId] = true;
|
|
|
|
if (funcId in ttContext.functionsStackDeltas) {
|
|
const newStackLength = stack.length + ttContext.functionsStackDeltas[funcId];
|
|
|
|
if (newStackLength < 0) {
|
|
(0, _util.warn)("TT: CALL invalid functions stack delta.");
|
|
ttContext.hintsValid = false;
|
|
return;
|
|
}
|
|
|
|
stack.length = newStackLength;
|
|
} else if (funcId in ttContext.functionsDefined && !functionsCalled.includes(funcId)) {
|
|
callstack.push({
|
|
data,
|
|
i,
|
|
stackTop: stack.length - 1
|
|
});
|
|
functionsCalled.push(funcId);
|
|
pc = ttContext.functionsDefined[funcId];
|
|
|
|
if (!pc) {
|
|
(0, _util.warn)("TT: CALL non-existent function");
|
|
ttContext.hintsValid = false;
|
|
return;
|
|
}
|
|
|
|
data = pc.data;
|
|
i = pc.i;
|
|
}
|
|
}
|
|
}
|
|
} else if (op === 0x2c && !tooComplexToFollowFunctions) {
|
|
if (inFDEF || inELSE) {
|
|
(0, _util.warn)("TT: nested FDEFs not allowed");
|
|
tooComplexToFollowFunctions = true;
|
|
}
|
|
|
|
inFDEF = true;
|
|
lastDeff = i;
|
|
funcId = stack.pop();
|
|
ttContext.functionsDefined[funcId] = {
|
|
data,
|
|
i
|
|
};
|
|
} else if (op === 0x2d) {
|
|
if (inFDEF) {
|
|
inFDEF = false;
|
|
lastEndf = i;
|
|
} else {
|
|
pc = callstack.pop();
|
|
|
|
if (!pc) {
|
|
(0, _util.warn)("TT: ENDF bad stack");
|
|
ttContext.hintsValid = false;
|
|
return;
|
|
}
|
|
|
|
funcId = functionsCalled.pop();
|
|
data = pc.data;
|
|
i = pc.i;
|
|
ttContext.functionsStackDeltas[funcId] = stack.length - pc.stackTop;
|
|
}
|
|
} else if (op === 0x89) {
|
|
if (inFDEF || inELSE) {
|
|
(0, _util.warn)("TT: nested IDEFs not allowed");
|
|
tooComplexToFollowFunctions = true;
|
|
}
|
|
|
|
inFDEF = true;
|
|
lastDeff = i;
|
|
} else if (op === 0x58) {
|
|
++ifLevel;
|
|
} else if (op === 0x1b) {
|
|
inELSE = ifLevel;
|
|
} else if (op === 0x59) {
|
|
if (inELSE === ifLevel) {
|
|
inELSE = 0;
|
|
}
|
|
|
|
--ifLevel;
|
|
} else if (op === 0x1c) {
|
|
if (!inFDEF && !inELSE) {
|
|
const offset = stack.at(-1);
|
|
|
|
if (offset > 0) {
|
|
i += offset - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!inFDEF && !inELSE) {
|
|
let stackDelta = 0;
|
|
|
|
if (op <= 0x8e) {
|
|
stackDelta = TTOpsStackDeltas[op];
|
|
} else if (op >= 0xc0 && op <= 0xdf) {
|
|
stackDelta = -1;
|
|
} else if (op >= 0xe0) {
|
|
stackDelta = -2;
|
|
}
|
|
|
|
if (op >= 0x71 && op <= 0x75) {
|
|
n = stack.pop();
|
|
|
|
if (!isNaN(n)) {
|
|
stackDelta = -n * 2;
|
|
}
|
|
}
|
|
|
|
while (stackDelta < 0 && stack.length > 0) {
|
|
stack.pop();
|
|
stackDelta++;
|
|
}
|
|
|
|
while (stackDelta > 0) {
|
|
stack.push(NaN);
|
|
stackDelta--;
|
|
}
|
|
}
|
|
}
|
|
|
|
ttContext.tooComplexToFollowFunctions = tooComplexToFollowFunctions;
|
|
const content = [data];
|
|
|
|
if (i > data.length) {
|
|
content.push(new Uint8Array(i - data.length));
|
|
}
|
|
|
|
if (lastDeff > lastEndf) {
|
|
(0, _util.warn)("TT: complementing a missing function tail");
|
|
content.push(new Uint8Array([0x22, 0x2d]));
|
|
}
|
|
|
|
foldTTTable(table, content);
|
|
}
|
|
|
|
function checkInvalidFunctions(ttContext, maxFunctionDefs) {
|
|
if (ttContext.tooComplexToFollowFunctions) {
|
|
return;
|
|
}
|
|
|
|
if (ttContext.functionsDefined.length > maxFunctionDefs) {
|
|
(0, _util.warn)("TT: more functions defined than expected");
|
|
ttContext.hintsValid = false;
|
|
return;
|
|
}
|
|
|
|
for (let j = 0, jj = ttContext.functionsUsed.length; j < jj; j++) {
|
|
if (j > maxFunctionDefs) {
|
|
(0, _util.warn)("TT: invalid function id: " + j);
|
|
ttContext.hintsValid = false;
|
|
return;
|
|
}
|
|
|
|
if (ttContext.functionsUsed[j] && !ttContext.functionsDefined[j]) {
|
|
(0, _util.warn)("TT: undefined function: " + j);
|
|
ttContext.hintsValid = false;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
function foldTTTable(table, content) {
|
|
if (content.length > 1) {
|
|
let newLength = 0;
|
|
let j, jj;
|
|
|
|
for (j = 0, jj = content.length; j < jj; j++) {
|
|
newLength += content[j].length;
|
|
}
|
|
|
|
newLength = newLength + 3 & ~3;
|
|
const result = new Uint8Array(newLength);
|
|
let pos = 0;
|
|
|
|
for (j = 0, jj = content.length; j < jj; j++) {
|
|
result.set(content[j], pos);
|
|
pos += content[j].length;
|
|
}
|
|
|
|
table.data = result;
|
|
table.length = newLength;
|
|
}
|
|
}
|
|
|
|
function sanitizeTTPrograms(fpgm, prep, cvt, maxFunctionDefs) {
|
|
const ttContext = {
|
|
functionsDefined: [],
|
|
functionsUsed: [],
|
|
functionsStackDeltas: [],
|
|
tooComplexToFollowFunctions: false,
|
|
hintsValid: true
|
|
};
|
|
|
|
if (fpgm) {
|
|
sanitizeTTProgram(fpgm, ttContext);
|
|
}
|
|
|
|
if (prep) {
|
|
sanitizeTTProgram(prep, ttContext);
|
|
}
|
|
|
|
if (fpgm) {
|
|
checkInvalidFunctions(ttContext, maxFunctionDefs);
|
|
}
|
|
|
|
if (cvt && cvt.length & 1) {
|
|
const cvtData = new Uint8Array(cvt.length + 1);
|
|
cvtData.set(cvt.data);
|
|
cvt.data = cvtData;
|
|
}
|
|
|
|
return ttContext.hintsValid;
|
|
}
|
|
|
|
font = new _stream.Stream(new Uint8Array(font.getBytes()));
|
|
let header, tables;
|
|
|
|
if (isTrueTypeCollectionFile(font)) {
|
|
const ttcData = readTrueTypeCollectionData(font, this.name);
|
|
header = ttcData.header;
|
|
tables = ttcData.tables;
|
|
} else {
|
|
header = readOpenTypeHeader(font);
|
|
tables = readTables(font, header.numTables);
|
|
}
|
|
|
|
let cff, cffFile;
|
|
const isTrueType = !tables["CFF "];
|
|
|
|
if (!isTrueType) {
|
|
const isComposite = properties.composite && ((properties.cidToGidMap || []).length > 0 || !(properties.cMap instanceof _cmap.IdentityCMap));
|
|
|
|
if (header.version === "OTTO" && !isComposite || !tables.head || !tables.hhea || !tables.maxp || !tables.post) {
|
|
cffFile = new _stream.Stream(tables["CFF "].data);
|
|
cff = new _cff_font.CFFFont(cffFile, properties);
|
|
adjustWidths(properties);
|
|
return this.convert(name, cff, properties);
|
|
}
|
|
|
|
delete tables.glyf;
|
|
delete tables.loca;
|
|
delete tables.fpgm;
|
|
delete tables.prep;
|
|
delete tables["cvt "];
|
|
this.isOpenType = true;
|
|
} else {
|
|
if (!tables.loca) {
|
|
throw new _util.FormatError('Required "loca" table is not found');
|
|
}
|
|
|
|
if (!tables.glyf) {
|
|
(0, _util.warn)('Required "glyf" table is not found -- trying to recover.');
|
|
tables.glyf = {
|
|
tag: "glyf",
|
|
data: new Uint8Array(0)
|
|
};
|
|
}
|
|
|
|
this.isOpenType = false;
|
|
}
|
|
|
|
if (!tables.maxp) {
|
|
throw new _util.FormatError('Required "maxp" table is not found');
|
|
}
|
|
|
|
font.pos = (font.start || 0) + tables.maxp.offset;
|
|
const version = font.getInt32();
|
|
const numGlyphs = font.getUint16();
|
|
|
|
if (properties.scaleFactors && properties.scaleFactors.length === numGlyphs && isTrueType) {
|
|
const {
|
|
scaleFactors
|
|
} = properties;
|
|
const isGlyphLocationsLong = int16(tables.head.data[50], tables.head.data[51]);
|
|
const glyphs = new _glyf.GlyfTable({
|
|
glyfTable: tables.glyf.data,
|
|
isGlyphLocationsLong,
|
|
locaTable: tables.loca.data,
|
|
numGlyphs
|
|
});
|
|
glyphs.scale(scaleFactors);
|
|
const {
|
|
glyf,
|
|
loca,
|
|
isLocationLong
|
|
} = glyphs.write();
|
|
tables.glyf.data = glyf;
|
|
tables.loca.data = loca;
|
|
|
|
if (isLocationLong !== !!isGlyphLocationsLong) {
|
|
tables.head.data[50] = 0;
|
|
tables.head.data[51] = isLocationLong ? 1 : 0;
|
|
}
|
|
|
|
const metrics = tables.hmtx.data;
|
|
|
|
for (let i = 0; i < numGlyphs; i++) {
|
|
const j = 4 * i;
|
|
const advanceWidth = Math.round(scaleFactors[i] * int16(metrics[j], metrics[j + 1]));
|
|
metrics[j] = advanceWidth >> 8 & 0xff;
|
|
metrics[j + 1] = advanceWidth & 0xff;
|
|
const lsb = Math.round(scaleFactors[i] * signedInt16(metrics[j + 2], metrics[j + 3]));
|
|
writeSignedInt16(metrics, j + 2, lsb);
|
|
}
|
|
}
|
|
|
|
let numGlyphsOut = numGlyphs + 1;
|
|
let dupFirstEntry = true;
|
|
|
|
if (numGlyphsOut > 0xffff) {
|
|
dupFirstEntry = false;
|
|
numGlyphsOut = numGlyphs;
|
|
(0, _util.warn)("Not enough space in glyfs to duplicate first glyph.");
|
|
}
|
|
|
|
let maxFunctionDefs = 0;
|
|
let maxSizeOfInstructions = 0;
|
|
|
|
if (version >= 0x00010000 && tables.maxp.length >= 22) {
|
|
font.pos += 8;
|
|
const maxZones = font.getUint16();
|
|
|
|
if (maxZones > 2) {
|
|
tables.maxp.data[14] = 0;
|
|
tables.maxp.data[15] = 2;
|
|
}
|
|
|
|
font.pos += 4;
|
|
maxFunctionDefs = font.getUint16();
|
|
font.pos += 4;
|
|
maxSizeOfInstructions = font.getUint16();
|
|
}
|
|
|
|
tables.maxp.data[4] = numGlyphsOut >> 8;
|
|
tables.maxp.data[5] = numGlyphsOut & 255;
|
|
const hintsValid = sanitizeTTPrograms(tables.fpgm, tables.prep, tables["cvt "], maxFunctionDefs);
|
|
|
|
if (!hintsValid) {
|
|
delete tables.fpgm;
|
|
delete tables.prep;
|
|
delete tables["cvt "];
|
|
}
|
|
|
|
sanitizeMetrics(font, tables.hhea, tables.hmtx, tables.head, numGlyphsOut, dupFirstEntry);
|
|
|
|
if (!tables.head) {
|
|
throw new _util.FormatError('Required "head" table is not found');
|
|
}
|
|
|
|
sanitizeHead(tables.head, numGlyphs, isTrueType ? tables.loca.length : 0);
|
|
let missingGlyphs = Object.create(null);
|
|
|
|
if (isTrueType) {
|
|
const isGlyphLocationsLong = int16(tables.head.data[50], tables.head.data[51]);
|
|
const glyphsInfo = sanitizeGlyphLocations(tables.loca, tables.glyf, numGlyphs, isGlyphLocationsLong, hintsValid, dupFirstEntry, maxSizeOfInstructions);
|
|
missingGlyphs = glyphsInfo.missingGlyphs;
|
|
|
|
if (version >= 0x00010000 && tables.maxp.length >= 22) {
|
|
tables.maxp.data[26] = glyphsInfo.maxSizeOfInstructions >> 8;
|
|
tables.maxp.data[27] = glyphsInfo.maxSizeOfInstructions & 255;
|
|
}
|
|
}
|
|
|
|
if (!tables.hhea) {
|
|
throw new _util.FormatError('Required "hhea" table is not found');
|
|
}
|
|
|
|
if (tables.hhea.data[10] === 0 && tables.hhea.data[11] === 0) {
|
|
tables.hhea.data[10] = 0xff;
|
|
tables.hhea.data[11] = 0xff;
|
|
}
|
|
|
|
const metricsOverride = {
|
|
unitsPerEm: int16(tables.head.data[18], tables.head.data[19]),
|
|
yMax: int16(tables.head.data[42], tables.head.data[43]),
|
|
yMin: signedInt16(tables.head.data[38], tables.head.data[39]),
|
|
ascent: signedInt16(tables.hhea.data[4], tables.hhea.data[5]),
|
|
descent: signedInt16(tables.hhea.data[6], tables.hhea.data[7]),
|
|
lineGap: signedInt16(tables.hhea.data[8], tables.hhea.data[9])
|
|
};
|
|
this.ascent = metricsOverride.ascent / metricsOverride.unitsPerEm;
|
|
this.descent = metricsOverride.descent / metricsOverride.unitsPerEm;
|
|
this.lineGap = metricsOverride.lineGap / metricsOverride.unitsPerEm;
|
|
|
|
if (this.cssFontInfo && this.cssFontInfo.lineHeight) {
|
|
this.lineHeight = this.cssFontInfo.metrics.lineHeight;
|
|
this.lineGap = this.cssFontInfo.metrics.lineGap;
|
|
} else {
|
|
this.lineHeight = this.ascent - this.descent + this.lineGap;
|
|
}
|
|
|
|
if (tables.post) {
|
|
readPostScriptTable(tables.post, properties, numGlyphs);
|
|
}
|
|
|
|
tables.post = {
|
|
tag: "post",
|
|
data: createPostTable(properties)
|
|
};
|
|
const charCodeToGlyphId = [];
|
|
|
|
function hasGlyph(glyphId) {
|
|
return !missingGlyphs[glyphId];
|
|
}
|
|
|
|
if (properties.composite) {
|
|
const cidToGidMap = properties.cidToGidMap || [];
|
|
const isCidToGidMapEmpty = cidToGidMap.length === 0;
|
|
properties.cMap.forEach(function (charCode, cid) {
|
|
if (typeof cid === "string") {
|
|
cid = convertCidString(charCode, cid, true);
|
|
}
|
|
|
|
if (cid > 0xffff) {
|
|
throw new _util.FormatError("Max size of CID is 65,535");
|
|
}
|
|
|
|
let glyphId = -1;
|
|
|
|
if (isCidToGidMapEmpty) {
|
|
glyphId = cid;
|
|
} else if (cidToGidMap[cid] !== undefined) {
|
|
glyphId = cidToGidMap[cid];
|
|
}
|
|
|
|
if (glyphId >= 0 && glyphId < numGlyphs && hasGlyph(glyphId)) {
|
|
charCodeToGlyphId[charCode] = glyphId;
|
|
}
|
|
});
|
|
} else {
|
|
const cmapTable = readCmapTable(tables.cmap, font, this.isSymbolicFont, properties.hasEncoding);
|
|
const cmapPlatformId = cmapTable.platformId;
|
|
const cmapEncodingId = cmapTable.encodingId;
|
|
const cmapMappings = cmapTable.mappings;
|
|
const cmapMappingsLength = cmapMappings.length;
|
|
let baseEncoding = [],
|
|
forcePostTable = false;
|
|
|
|
if (properties.hasEncoding && (properties.baseEncodingName === "MacRomanEncoding" || properties.baseEncodingName === "WinAnsiEncoding")) {
|
|
baseEncoding = (0, _encodings.getEncoding)(properties.baseEncodingName);
|
|
}
|
|
|
|
if (properties.hasEncoding && !this.isSymbolicFont && (cmapPlatformId === 3 && cmapEncodingId === 1 || cmapPlatformId === 1 && cmapEncodingId === 0)) {
|
|
const glyphsUnicodeMap = (0, _glyphlist.getGlyphsUnicode)();
|
|
|
|
for (let charCode = 0; charCode < 256; charCode++) {
|
|
let glyphName;
|
|
|
|
if (this.differences[charCode] !== undefined) {
|
|
glyphName = this.differences[charCode];
|
|
} else if (baseEncoding.length && baseEncoding[charCode] !== "") {
|
|
glyphName = baseEncoding[charCode];
|
|
} else {
|
|
glyphName = _encodings.StandardEncoding[charCode];
|
|
}
|
|
|
|
if (!glyphName) {
|
|
continue;
|
|
}
|
|
|
|
const standardGlyphName = (0, _fonts_utils.recoverGlyphName)(glyphName, glyphsUnicodeMap);
|
|
let unicodeOrCharCode;
|
|
|
|
if (cmapPlatformId === 3 && cmapEncodingId === 1) {
|
|
unicodeOrCharCode = glyphsUnicodeMap[standardGlyphName];
|
|
} else if (cmapPlatformId === 1 && cmapEncodingId === 0) {
|
|
unicodeOrCharCode = _encodings.MacRomanEncoding.indexOf(standardGlyphName);
|
|
}
|
|
|
|
if (unicodeOrCharCode === undefined) {
|
|
if (!properties.glyphNames && properties.hasIncludedToUnicodeMap && !(this.toUnicode instanceof _to_unicode_map.IdentityToUnicodeMap)) {
|
|
const unicode = this.toUnicode.get(charCode);
|
|
|
|
if (unicode) {
|
|
unicodeOrCharCode = unicode.codePointAt(0);
|
|
}
|
|
}
|
|
|
|
if (unicodeOrCharCode === undefined) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
for (let i = 0; i < cmapMappingsLength; ++i) {
|
|
if (cmapMappings[i].charCode !== unicodeOrCharCode) {
|
|
continue;
|
|
}
|
|
|
|
charCodeToGlyphId[charCode] = cmapMappings[i].glyphId;
|
|
break;
|
|
}
|
|
}
|
|
} else if (cmapPlatformId === 0) {
|
|
for (let i = 0; i < cmapMappingsLength; ++i) {
|
|
charCodeToGlyphId[cmapMappings[i].charCode] = cmapMappings[i].glyphId;
|
|
}
|
|
|
|
forcePostTable = true;
|
|
} else {
|
|
for (let i = 0; i < cmapMappingsLength; ++i) {
|
|
let charCode = cmapMappings[i].charCode;
|
|
|
|
if (cmapPlatformId === 3 && charCode >= 0xf000 && charCode <= 0xf0ff) {
|
|
charCode &= 0xff;
|
|
}
|
|
|
|
charCodeToGlyphId[charCode] = cmapMappings[i].glyphId;
|
|
}
|
|
}
|
|
|
|
if (properties.glyphNames && (baseEncoding.length || this.differences.length)) {
|
|
for (let i = 0; i < 256; ++i) {
|
|
if (!forcePostTable && charCodeToGlyphId[i] !== undefined) {
|
|
continue;
|
|
}
|
|
|
|
const glyphName = this.differences[i] || baseEncoding[i];
|
|
|
|
if (!glyphName) {
|
|
continue;
|
|
}
|
|
|
|
const glyphId = properties.glyphNames.indexOf(glyphName);
|
|
|
|
if (glyphId > 0 && hasGlyph(glyphId)) {
|
|
charCodeToGlyphId[i] = glyphId;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (charCodeToGlyphId.length === 0) {
|
|
charCodeToGlyphId[0] = 0;
|
|
}
|
|
|
|
let glyphZeroId = numGlyphsOut - 1;
|
|
|
|
if (!dupFirstEntry) {
|
|
glyphZeroId = 0;
|
|
}
|
|
|
|
if (!properties.cssFontInfo) {
|
|
const newMapping = adjustMapping(charCodeToGlyphId, hasGlyph, glyphZeroId, this.toUnicode);
|
|
this.toFontChar = newMapping.toFontChar;
|
|
tables.cmap = {
|
|
tag: "cmap",
|
|
data: createCmapTable(newMapping.charCodeToGlyphId, newMapping.toUnicodeExtraMap, numGlyphsOut)
|
|
};
|
|
|
|
if (!tables["OS/2"] || !validateOS2Table(tables["OS/2"], font)) {
|
|
tables["OS/2"] = {
|
|
tag: "OS/2",
|
|
data: createOS2Table(properties, newMapping.charCodeToGlyphId, metricsOverride)
|
|
};
|
|
}
|
|
}
|
|
|
|
if (!isTrueType) {
|
|
try {
|
|
cffFile = new _stream.Stream(tables["CFF "].data);
|
|
const parser = new _cff_parser.CFFParser(cffFile, properties, _fonts_utils.SEAC_ANALYSIS_ENABLED);
|
|
cff = parser.parse();
|
|
cff.duplicateFirstGlyph();
|
|
const compiler = new _cff_parser.CFFCompiler(cff);
|
|
tables["CFF "].data = compiler.compile();
|
|
} catch (e) {
|
|
(0, _util.warn)("Failed to compile font " + properties.loadedName);
|
|
}
|
|
}
|
|
|
|
if (!tables.name) {
|
|
tables.name = {
|
|
tag: "name",
|
|
data: createNameTable(this.name)
|
|
};
|
|
} else {
|
|
const namePrototype = readNameTable(tables.name);
|
|
tables.name.data = createNameTable(name, namePrototype);
|
|
this.psName = namePrototype[0][6] || null;
|
|
}
|
|
|
|
const builder = new _opentype_file_builder.OpenTypeFileBuilder(header.version);
|
|
|
|
for (const tableTag in tables) {
|
|
builder.addTable(tableTag, tables[tableTag].data);
|
|
}
|
|
|
|
return builder.toArray();
|
|
}
|
|
|
|
convert(fontName, font, properties) {
|
|
properties.fixedPitch = false;
|
|
|
|
if (properties.builtInEncoding) {
|
|
adjustToUnicode(properties, properties.builtInEncoding);
|
|
}
|
|
|
|
let glyphZeroId = 1;
|
|
|
|
if (font instanceof _cff_font.CFFFont) {
|
|
glyphZeroId = font.numGlyphs - 1;
|
|
}
|
|
|
|
const mapping = font.getGlyphMapping(properties);
|
|
let newMapping = null;
|
|
let newCharCodeToGlyphId = mapping;
|
|
let toUnicodeExtraMap = null;
|
|
|
|
if (!properties.cssFontInfo) {
|
|
newMapping = adjustMapping(mapping, font.hasGlyphId.bind(font), glyphZeroId, this.toUnicode);
|
|
this.toFontChar = newMapping.toFontChar;
|
|
newCharCodeToGlyphId = newMapping.charCodeToGlyphId;
|
|
toUnicodeExtraMap = newMapping.toUnicodeExtraMap;
|
|
}
|
|
|
|
const numGlyphs = font.numGlyphs;
|
|
|
|
function getCharCodes(charCodeToGlyphId, glyphId) {
|
|
let charCodes = null;
|
|
|
|
for (const charCode in charCodeToGlyphId) {
|
|
if (glyphId === charCodeToGlyphId[charCode]) {
|
|
if (!charCodes) {
|
|
charCodes = [];
|
|
}
|
|
|
|
charCodes.push(charCode | 0);
|
|
}
|
|
}
|
|
|
|
return charCodes;
|
|
}
|
|
|
|
function createCharCode(charCodeToGlyphId, glyphId) {
|
|
for (const charCode in charCodeToGlyphId) {
|
|
if (glyphId === charCodeToGlyphId[charCode]) {
|
|
return charCode | 0;
|
|
}
|
|
}
|
|
|
|
newMapping.charCodeToGlyphId[newMapping.nextAvailableFontCharCode] = glyphId;
|
|
return newMapping.nextAvailableFontCharCode++;
|
|
}
|
|
|
|
const seacs = font.seacs;
|
|
|
|
if (newMapping && _fonts_utils.SEAC_ANALYSIS_ENABLED && seacs && seacs.length) {
|
|
const matrix = properties.fontMatrix || _util.FONT_IDENTITY_MATRIX;
|
|
const charset = font.getCharset();
|
|
const seacMap = Object.create(null);
|
|
|
|
for (let glyphId in seacs) {
|
|
glyphId |= 0;
|
|
const seac = seacs[glyphId];
|
|
const baseGlyphName = _encodings.StandardEncoding[seac[2]];
|
|
const accentGlyphName = _encodings.StandardEncoding[seac[3]];
|
|
const baseGlyphId = charset.indexOf(baseGlyphName);
|
|
const accentGlyphId = charset.indexOf(accentGlyphName);
|
|
|
|
if (baseGlyphId < 0 || accentGlyphId < 0) {
|
|
continue;
|
|
}
|
|
|
|
const accentOffset = {
|
|
x: seac[0] * matrix[0] + seac[1] * matrix[2] + matrix[4],
|
|
y: seac[0] * matrix[1] + seac[1] * matrix[3] + matrix[5]
|
|
};
|
|
const charCodes = getCharCodes(mapping, glyphId);
|
|
|
|
if (!charCodes) {
|
|
continue;
|
|
}
|
|
|
|
for (let i = 0, ii = charCodes.length; i < ii; i++) {
|
|
const charCode = charCodes[i];
|
|
const charCodeToGlyphId = newMapping.charCodeToGlyphId;
|
|
const baseFontCharCode = createCharCode(charCodeToGlyphId, baseGlyphId);
|
|
const accentFontCharCode = createCharCode(charCodeToGlyphId, accentGlyphId);
|
|
seacMap[charCode] = {
|
|
baseFontCharCode,
|
|
accentFontCharCode,
|
|
accentOffset
|
|
};
|
|
}
|
|
}
|
|
|
|
properties.seacMap = seacMap;
|
|
}
|
|
|
|
const unitsPerEm = 1 / (properties.fontMatrix || _util.FONT_IDENTITY_MATRIX)[0];
|
|
const builder = new _opentype_file_builder.OpenTypeFileBuilder("\x4F\x54\x54\x4F");
|
|
builder.addTable("CFF ", font.data);
|
|
builder.addTable("OS/2", createOS2Table(properties, newCharCodeToGlyphId));
|
|
builder.addTable("cmap", createCmapTable(newCharCodeToGlyphId, toUnicodeExtraMap, numGlyphs));
|
|
builder.addTable("head", "\x00\x01\x00\x00" + "\x00\x00\x10\x00" + "\x00\x00\x00\x00" + "\x5F\x0F\x3C\xF5" + "\x00\x00" + safeString16(unitsPerEm) + "\x00\x00\x00\x00\x9e\x0b\x7e\x27" + "\x00\x00\x00\x00\x9e\x0b\x7e\x27" + "\x00\x00" + safeString16(properties.descent) + "\x0F\xFF" + safeString16(properties.ascent) + string16(properties.italicAngle ? 2 : 0) + "\x00\x11" + "\x00\x00" + "\x00\x00" + "\x00\x00");
|
|
builder.addTable("hhea", "\x00\x01\x00\x00" + safeString16(properties.ascent) + safeString16(properties.descent) + "\x00\x00" + "\xFF\xFF" + "\x00\x00" + "\x00\x00" + "\x00\x00" + safeString16(properties.capHeight) + safeString16(Math.tan(properties.italicAngle) * properties.xHeight) + "\x00\x00" + "\x00\x00" + "\x00\x00" + "\x00\x00" + "\x00\x00" + "\x00\x00" + string16(numGlyphs));
|
|
builder.addTable("hmtx", function fontFieldsHmtx() {
|
|
const charstrings = font.charstrings;
|
|
const cffWidths = font.cff ? font.cff.widths : null;
|
|
let hmtx = "\x00\x00\x00\x00";
|
|
|
|
for (let i = 1, ii = numGlyphs; i < ii; i++) {
|
|
let width = 0;
|
|
|
|
if (charstrings) {
|
|
const charstring = charstrings[i - 1];
|
|
width = "width" in charstring ? charstring.width : 0;
|
|
} else if (cffWidths) {
|
|
width = Math.ceil(cffWidths[i] || 0);
|
|
}
|
|
|
|
hmtx += string16(width) + string16(0);
|
|
}
|
|
|
|
return hmtx;
|
|
}());
|
|
builder.addTable("maxp", "\x00\x00\x50\x00" + string16(numGlyphs));
|
|
builder.addTable("name", createNameTable(fontName));
|
|
builder.addTable("post", createPostTable(properties));
|
|
return builder.toArray();
|
|
}
|
|
|
|
get spaceWidth() {
|
|
const possibleSpaceReplacements = ["space", "minus", "one", "i", "I"];
|
|
let width;
|
|
|
|
for (let i = 0, ii = possibleSpaceReplacements.length; i < ii; i++) {
|
|
const glyphName = possibleSpaceReplacements[i];
|
|
|
|
if (glyphName in this.widths) {
|
|
width = this.widths[glyphName];
|
|
break;
|
|
}
|
|
|
|
const glyphsUnicodeMap = (0, _glyphlist.getGlyphsUnicode)();
|
|
const glyphUnicode = glyphsUnicodeMap[glyphName];
|
|
let charcode = 0;
|
|
|
|
if (this.composite && this.cMap.contains(glyphUnicode)) {
|
|
charcode = this.cMap.lookup(glyphUnicode);
|
|
|
|
if (typeof charcode === "string") {
|
|
charcode = convertCidString(glyphUnicode, charcode);
|
|
}
|
|
}
|
|
|
|
if (!charcode && this.toUnicode) {
|
|
charcode = this.toUnicode.charCodeOf(glyphUnicode);
|
|
}
|
|
|
|
if (charcode <= 0) {
|
|
charcode = glyphUnicode;
|
|
}
|
|
|
|
width = this.widths[charcode];
|
|
|
|
if (width) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
width = width || this.defaultWidth;
|
|
return (0, _util.shadow)(this, "spaceWidth", width);
|
|
}
|
|
|
|
_charToGlyph(charcode, isSpace = false) {
|
|
let fontCharCode, width, operatorListId;
|
|
let widthCode = charcode;
|
|
|
|
if (this.cMap && this.cMap.contains(charcode)) {
|
|
widthCode = this.cMap.lookup(charcode);
|
|
|
|
if (typeof widthCode === "string") {
|
|
widthCode = convertCidString(charcode, widthCode);
|
|
}
|
|
}
|
|
|
|
width = this.widths[widthCode];
|
|
|
|
if (typeof width !== "number") {
|
|
width = this.defaultWidth;
|
|
}
|
|
|
|
const vmetric = this.vmetrics && this.vmetrics[widthCode];
|
|
let unicode = this.toUnicode.get(charcode) || charcode;
|
|
|
|
if (typeof unicode === "number") {
|
|
unicode = String.fromCharCode(unicode);
|
|
}
|
|
|
|
let isInFont = this.toFontChar[charcode] !== undefined;
|
|
fontCharCode = this.toFontChar[charcode] || charcode;
|
|
|
|
if (this.missingFile) {
|
|
const glyphName = this.differences[charcode] || this.defaultEncoding[charcode];
|
|
|
|
if ((glyphName === ".notdef" || glyphName === "") && this.type === "Type1") {
|
|
fontCharCode = 0x20;
|
|
}
|
|
|
|
fontCharCode = (0, _unicode.mapSpecialUnicodeValues)(fontCharCode);
|
|
}
|
|
|
|
if (this.isType3Font) {
|
|
operatorListId = fontCharCode;
|
|
}
|
|
|
|
let accent = null;
|
|
|
|
if (this.seacMap && this.seacMap[charcode]) {
|
|
isInFont = true;
|
|
const seac = this.seacMap[charcode];
|
|
fontCharCode = seac.baseFontCharCode;
|
|
accent = {
|
|
fontChar: String.fromCodePoint(seac.accentFontCharCode),
|
|
offset: seac.accentOffset
|
|
};
|
|
}
|
|
|
|
let fontChar = "";
|
|
|
|
if (typeof fontCharCode === "number") {
|
|
if (fontCharCode <= 0x10ffff) {
|
|
fontChar = String.fromCodePoint(fontCharCode);
|
|
} else {
|
|
(0, _util.warn)(`charToGlyph - invalid fontCharCode: ${fontCharCode}`);
|
|
}
|
|
}
|
|
|
|
let glyph = this._glyphCache[charcode];
|
|
|
|
if (!glyph || !glyph.matchesForCache(charcode, fontChar, unicode, accent, width, vmetric, operatorListId, isSpace, isInFont)) {
|
|
glyph = new Glyph(charcode, fontChar, unicode, accent, width, vmetric, operatorListId, isSpace, isInFont);
|
|
this._glyphCache[charcode] = glyph;
|
|
}
|
|
|
|
return glyph;
|
|
}
|
|
|
|
charsToGlyphs(chars) {
|
|
let glyphs = this._charsCache[chars];
|
|
|
|
if (glyphs) {
|
|
return glyphs;
|
|
}
|
|
|
|
glyphs = [];
|
|
|
|
if (this.cMap) {
|
|
const c = Object.create(null),
|
|
ii = chars.length;
|
|
let i = 0;
|
|
|
|
while (i < ii) {
|
|
this.cMap.readCharCode(chars, i, c);
|
|
const {
|
|
charcode,
|
|
length
|
|
} = c;
|
|
i += length;
|
|
|
|
const glyph = this._charToGlyph(charcode, length === 1 && chars.charCodeAt(i - 1) === 0x20);
|
|
|
|
glyphs.push(glyph);
|
|
}
|
|
} else {
|
|
for (let i = 0, ii = chars.length; i < ii; ++i) {
|
|
const charcode = chars.charCodeAt(i);
|
|
|
|
const glyph = this._charToGlyph(charcode, charcode === 0x20);
|
|
|
|
glyphs.push(glyph);
|
|
}
|
|
}
|
|
|
|
return this._charsCache[chars] = glyphs;
|
|
}
|
|
|
|
getCharPositions(chars) {
|
|
const positions = [];
|
|
|
|
if (this.cMap) {
|
|
const c = Object.create(null);
|
|
let i = 0;
|
|
|
|
while (i < chars.length) {
|
|
this.cMap.readCharCode(chars, i, c);
|
|
const length = c.length;
|
|
positions.push([i, i + length]);
|
|
i += length;
|
|
}
|
|
} else {
|
|
for (let i = 0, ii = chars.length; i < ii; ++i) {
|
|
positions.push([i, i + 1]);
|
|
}
|
|
}
|
|
|
|
return positions;
|
|
}
|
|
|
|
get glyphCacheValues() {
|
|
return Object.values(this._glyphCache);
|
|
}
|
|
|
|
encodeString(str) {
|
|
const buffers = [];
|
|
const currentBuf = [];
|
|
|
|
const hasCurrentBufErrors = () => buffers.length % 2 === 1;
|
|
|
|
const getCharCode = this.toUnicode instanceof _to_unicode_map.IdentityToUnicodeMap ? unicode => this.toUnicode.charCodeOf(unicode) : unicode => this.toUnicode.charCodeOf(String.fromCodePoint(unicode));
|
|
|
|
for (let i = 0, ii = str.length; i < ii; i++) {
|
|
const unicode = str.codePointAt(i);
|
|
|
|
if (unicode > 0xd7ff && (unicode < 0xe000 || unicode > 0xfffd)) {
|
|
i++;
|
|
}
|
|
|
|
if (this.toUnicode) {
|
|
const charCode = getCharCode(unicode);
|
|
|
|
if (charCode !== -1) {
|
|
if (hasCurrentBufErrors()) {
|
|
buffers.push(currentBuf.join(""));
|
|
currentBuf.length = 0;
|
|
}
|
|
|
|
const charCodeLength = this.cMap ? this.cMap.getCharCodeLength(charCode) : 1;
|
|
|
|
for (let j = charCodeLength - 1; j >= 0; j--) {
|
|
currentBuf.push(String.fromCharCode(charCode >> 8 * j & 0xff));
|
|
}
|
|
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!hasCurrentBufErrors()) {
|
|
buffers.push(currentBuf.join(""));
|
|
currentBuf.length = 0;
|
|
}
|
|
|
|
currentBuf.push(String.fromCodePoint(unicode));
|
|
}
|
|
|
|
buffers.push(currentBuf.join(""));
|
|
return buffers;
|
|
}
|
|
|
|
}
|
|
|
|
exports.Font = Font;
|
|
|
|
class ErrorFont {
|
|
constructor(error) {
|
|
this.error = error;
|
|
this.loadedName = "g_font_error";
|
|
this.missingFile = true;
|
|
}
|
|
|
|
charsToGlyphs() {
|
|
return [];
|
|
}
|
|
|
|
encodeString(chars) {
|
|
return [chars];
|
|
}
|
|
|
|
exportData(extraProperties = false) {
|
|
return {
|
|
error: this.error
|
|
};
|
|
}
|
|
|
|
}
|
|
|
|
exports.ErrorFont = ErrorFont; |