pdfjs-dist
Version:
Generic build of Mozilla's PDF.js library.
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JavaScript
/**
* @licstart The following is the entire license notice for the
* JavaScript code in this page
*
* Copyright 2022 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @licend The above is the entire license notice for the
* JavaScript code in this page
*/
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.Font = exports.ErrorFont = void 0;
var _util = require("../shared/util.js");
var _cff_parser = require("./cff_parser.js");
var _fonts_utils = require("./fonts_utils.js");
var _unicode = require("./unicode.js");
var _glyphlist = require("./glyphlist.js");
var _encodings = require("./encodings.js");
var _standard_fonts = require("./standard_fonts.js");
var _to_unicode_map = require("./to_unicode_map.js");
var _cff_font = require("./cff_font.js");
var _font_renderer = require("./font_renderer.js");
var _metrics = require("./metrics.js");
var _glyf = require("./glyf.js");
var _cmap = require("./cmap.js");
var _opentype_file_builder = require("./opentype_file_builder.js");
var _core_utils = require("./core_utils.js");
var _stream = require("./stream.js");
var _type1_font = require("./type1_font.js");
const PRIVATE_USE_AREAS = [[0xe000, 0xf8ff], [0x100000, 0x10fffd]];
const PDF_GLYPH_SPACE_UNITS = 1000;
const EXPORT_DATA_PROPERTIES = ["ascent", "bbox", "black", "bold", "charProcOperatorList", "composite", "cssFontInfo", "data", "defaultVMetrics", "defaultWidth", "descent", "fallbackName", "fontMatrix", "fontType", "isInvalidPDFjsFont", "isType3Font", "italic", "loadedName", "mimetype", "missingFile", "name", "remeasure", "subtype", "type", "vertical"];
const EXPORT_DATA_EXTRA_PROPERTIES = ["cMap", "defaultEncoding", "differences", "isMonospace", "isSerifFont", "isSymbolicFont", "seacMap", "toFontChar", "toUnicode", "vmetrics", "widths"];
function adjustWidths(properties) {
if (!properties.fontMatrix) {
return;
}
if (properties.fontMatrix[0] === _util.FONT_IDENTITY_MATRIX[0]) {
return;
}
const scale = 0.001 / properties.fontMatrix[0];
const glyphsWidths = properties.widths;
for (const glyph in glyphsWidths) {
glyphsWidths[glyph] *= scale;
}
properties.defaultWidth *= scale;
}
function adjustToUnicode(properties, builtInEncoding) {
if (properties.isInternalFont) {
return;
}
if (properties.hasIncludedToUnicodeMap) {
return;
}
if (builtInEncoding === properties.defaultEncoding) {
return;
}
if (properties.toUnicode instanceof _to_unicode_map.IdentityToUnicodeMap) {
return;
}
const toUnicode = [],
glyphsUnicodeMap = (0, _glyphlist.getGlyphsUnicode)();
for (const charCode in builtInEncoding) {
if (properties.hasEncoding) {
if (properties.differences.length === 0 || properties.differences[charCode] !== undefined) {
continue;
}
}
const glyphName = builtInEncoding[charCode];
const unicode = (0, _unicode.getUnicodeForGlyph)(glyphName, glyphsUnicodeMap);
if (unicode !== -1) {
toUnicode[charCode] = String.fromCharCode(unicode);
}
}
if (toUnicode.length > 0) {
properties.toUnicode.amend(toUnicode);
}
}
function amendFallbackToUnicode(properties) {
if (!properties.fallbackToUnicode) {
return;
}
if (properties.toUnicode instanceof _to_unicode_map.IdentityToUnicodeMap) {
return;
}
const toUnicode = [];
for (const charCode in properties.fallbackToUnicode) {
if (properties.toUnicode.has(charCode)) {
continue;
}
toUnicode[charCode] = properties.fallbackToUnicode[charCode];
}
if (toUnicode.length > 0) {
properties.toUnicode.amend(toUnicode);
}
}
class Glyph {
constructor(originalCharCode, fontChar, unicode, accent, width, vmetric, operatorListId, isSpace, isInFont) {
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;
}
get category() {
return (0, _util.shadow)(this, "category", (0, _unicode.getCharUnicodeCategory)(this.unicode), true);
}
get normalizedUnicode() {
return (0, _util.shadow)(this, "normalizedUnicode", (0, _unicode.reverseIfRtl)(Glyph._NormalizedUnicodes[this.unicode] || this.unicode), true);
}
static get _NormalizedUnicodes() {
return (0, _util.shadow)(this, "_NormalizedUnicodes", (0, _unicode.getNormalizedUnicodes)());
}
}
function int16(b0, b1) {
return (b0 << 8) + b1;
}
function writeSignedInt16(bytes, index, value) {
bytes[index + 1] = value;
bytes[index] = value >>> 8;
}
function signedInt16(b0, b1) {
const value = (b0 << 8) + b1;
return value & 1 << 15 ? value - 0x10000 : value;
}
function int32(b0, b1, b2, b3) {
return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3;
}
function string16(value) {
return String.fromCharCode(value >> 8 & 0xff, value & 0xff);
}
function safeString16(value) {
if (value > 0x7fff) {
value = 0x7fff;
} else if (value < -0x8000) {
value = -0x8000;
}
return String.fromCharCode(value >> 8 & 0xff, value & 0xff);
}
function isTrueTypeFile(file) {
const header = file.peekBytes(4);
return (0, _core_utils.readUint32)(header, 0) === 0x00010000 || (0, _util.bytesToString)(header) === "true";
}
function isTrueTypeCollectionFile(file) {
const header = file.peekBytes(4);
return (0, _util.bytesToString)(header) === "ttcf";
}
function isOpenTypeFile(file) {
const header = file.peekBytes(4);
return (0, _util.bytesToString)(header) === "OTTO";
}
function isType1File(file) {
const header = file.peekBytes(2);
if (header[0] === 0x25 && header[1] === 0x21) {
return true;
}
if (header[0] === 0x80 && header[1] === 0x01) {
return true;
}
return false;
}
function isCFFFile(file) {
const header = file.peekBytes(4);
if (header[0] >= 1 && header[3] >= 1 && header[3] <= 4) {
return true;
}
return false;
}
function getFontFileType(file, {
type,
subtype,
composite
}) {
let fileType, fileSubtype;
if (isTrueTypeFile(file) || isTrueTypeCollectionFile(file)) {
if (composite) {
fileType = "CIDFontType2";
} else {
fileType = "TrueType";
}
} else if (isOpenTypeFile(file)) {
if (composite) {
fileType = "CIDFontType2";
} else {
fileType = "OpenType";
}
} else if (isType1File(file)) {
if (composite) {
fileType = "CIDFontType0";
} else {
fileType = type === "MMType1" ? "MMType1" : "Type1";
}
} else if (isCFFFile(file)) {
if (composite) {
fileType = "CIDFontType0";
fileSubtype = "CIDFontType0C";
} else {
fileType = type === "MMType1" ? "MMType1" : "Type1";
fileSubtype = "Type1C";
}
} else {
(0, _util.warn)("getFontFileType: Unable to detect correct font file Type/Subtype.");
fileType = type;
fileSubtype = subtype;
}
return [fileType, fileSubtype];
}
function applyStandardFontGlyphMap(map, glyphMap) {
for (const charCode in glyphMap) {
map[+charCode] = glyphMap[charCode];
}
}
function buildToFontChar(encoding, glyphsUnicodeMap, differences) {
const toFontChar = [];
let unicode;
for (let i = 0, ii = encoding.length; i < ii; i++) {
unicode = (0, _unicode.getUnicodeForGlyph)(encoding[i], glyphsUnicodeMap);
if (unicode !== -1) {
toFontChar[i] = unicode;
}
}
for (const charCode in differences) {
unicode = (0, _unicode.getUnicodeForGlyph)(differences[charCode], glyphsUnicodeMap);
if (unicode !== -1) {
toFontChar[+charCode] = unicode;
}
}
return toFontChar;
}
function convertCidString(charCode, cid, shouldThrow = false) {
switch (cid.length) {
case 1:
return cid.charCodeAt(0);
case 2:
return cid.charCodeAt(0) << 8 | cid.charCodeAt(1);
}
const msg = `Unsupported CID string (charCode ${charCode}): "${cid}".`;
if (shouldThrow) {
throw new _util.FormatError(msg);
}
(0, _util.warn)(msg);
return cid;
}
function adjustMapping(charCodeToGlyphId, hasGlyph, newGlyphZeroId, toUnicode) {
const newMap = Object.create(null);
const toUnicodeExtraMap = new Map();
const toFontChar = [];
const usedGlyphIds = new Set();
let privateUseAreaIndex = 0;
const privateUseOffetStart = PRIVATE_USE_AREAS[privateUseAreaIndex][0];
let nextAvailableFontCharCode = privateUseOffetStart;
let privateUseOffetEnd = PRIVATE_USE_AREAS[privateUseAreaIndex][1];
for (let originalCharCode in charCodeToGlyphId) {
originalCharCode |= 0;
let glyphId = charCodeToGlyphId[originalCharCode];
if (!hasGlyph(glyphId)) {
continue;
}
if (nextAvailableFontCharCode > privateUseOffetEnd) {
privateUseAreaIndex++;
if (privateUseAreaIndex >= PRIVATE_USE_AREAS.length) {
(0, _util.warn)("Ran out of space in font private use area.");
break;
}
nextAvailableFontCharCode = PRIVATE_USE_AREAS[privateUseAreaIndex][0];
privateUseOffetEnd = PRIVATE_USE_AREAS[privateUseAreaIndex][1];
}
const fontCharCode = nextAvailableFontCharCode++;
if (glyphId === 0) {
glyphId = newGlyphZeroId;
}
let unicode = toUnicode.get(originalCharCode);
if (typeof unicode === "string") {
unicode = unicode.codePointAt(0);
}
if (unicode && unicode < privateUseOffetStart && !usedGlyphIds.has(glyphId)) {
toUnicodeExtraMap.set(unicode, glyphId);
usedGlyphIds.add(glyphId);
}
newMap[fontCharCode] = glyphId;
toFontChar[originalCharCode] = fontCharCode;
}
return {
toFontChar,
charCodeToGlyphId: newMap,
toUnicodeExtraMap,
nextAvailableFontCharCode
};
}
function getRanges(glyphs, toUnicodeExtraMap, numGlyphs) {
const codes = [];
for (const charCode in glyphs) {
if (glyphs[charCode] >= numGlyphs) {
continue;
}
codes.push({
fontCharCode: charCode | 0,
glyphId: glyphs[charCode]
});
}
if (toUnicodeExtraMap) {
for (const [unicode, glyphId] of toUnicodeExtraMap) {
if (glyphId >= numGlyphs) {
continue;
}
codes.push({
fontCharCode: unicode,
glyphId
});
}
}
if (codes.length === 0) {
codes.push({
fontCharCode: 0,
glyphId: 0
});
}
codes.sort(function fontGetRangesSort(a, b) {
return a.fontCharCode - b.fontCharCode;
});
const ranges = [];
const length = codes.length;
for (let n = 0; n < length;) {
const start = codes[n].fontCharCode;
const codeIndices = [codes[n].glyphId];
++n;
let end = start;
while (n < length && end + 1 === codes[n].fontCharCode) {
codeIndices.push(codes[n].glyphId);
++end;
++n;
if (end === 0xffff) {
break;
}
}
ranges.push([start, end, codeIndices]);
}
return ranges;
}
function createCmapTable(glyphs, toUnicodeExtraMap, numGlyphs) {
const ranges = getRanges(glyphs, toUnicodeExtraMap, numGlyphs);
const numTables = ranges.at(-1)[1] > 0xffff ? 2 : 1;
let cmap = "\x00\x00" + string16(numTables) + "\x00\x03" + "\x00\x01" + (0, _util.string32)(4 + numTables * 8);
let i, ii, j, jj;
for (i = ranges.length - 1; i >= 0; --i) {
if (ranges[i][0] <= 0xffff) {
break;
}
}
const bmpLength = i + 1;
if (ranges[i][0] < 0xffff && ranges[i][1] === 0xffff) {
ranges[i][1] = 0xfffe;
}
const trailingRangesCount = ranges[i][1] < 0xffff ? 1 : 0;
const segCount = bmpLength + trailingRangesCount;
const searchParams = _opentype_file_builder.OpenTypeFileBuilder.getSearchParams(segCount, 2);
let startCount = "";
let endCount = "";
let idDeltas = "";
let idRangeOffsets = "";
let glyphsIds = "";
let bias = 0;
let range, start, end, codes;
for (i = 0, ii = bmpLength; i < ii; i++) {
range = ranges[i];
start = range[0];
end = range[1];
startCount += string16(start);
endCount += string16(end);
codes = range[2];
let contiguous = true;
for (j = 1, jj = codes.length; j < jj; ++j) {
if (codes[j] !== codes[j - 1] + 1) {
contiguous = false;
break;
}
}
if (!contiguous) {
const offset = (segCount - i) * 2 + bias * 2;
bias += end - start + 1;
idDeltas += string16(0);
idRangeOffsets += string16(offset);
for (j = 0, jj = codes.length; j < jj; ++j) {
glyphsIds += string16(codes[j]);
}
} else {
const startCode = codes[0];
idDeltas += string16(startCode - start & 0xffff);
idRangeOffsets += string16(0);
}
}
if (trailingRangesCount > 0) {
endCount += "\xFF\xFF";
startCount += "\xFF\xFF";
idDeltas += "\x00\x01";
idRangeOffsets += "\x00\x00";
}
const format314 = "\x00\x00" + string16(2 * segCount) + string16(searchParams.range) + string16(searchParams.entry) + string16(searchParams.rangeShift) + endCount + "\x00\x00" + startCount + idDeltas + idRangeOffsets + glyphsIds;
let format31012 = "";
let header31012 = "";
if (numTables > 1) {
cmap += "\x00\x03" + "\x00\x0A" + (0, _util.string32)(4 + numTables * 8 + 4 + format314.length);
format31012 = "";
for (i = 0, ii = ranges.length; i < ii; i++) {
range = ranges[i];
start = range[0];
codes = range[2];
let code = codes[0];
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;
const matches = name.match(/^InvalidPDFjsFont_(.*)_\d+$/);
this.isInvalidPDFjsFont = !!matches;
if (this.isInvalidPDFjsFont) {
this.fallbackName = matches[1];
} else if (this.isMonospace) {
this.fallbackName = "monospace";
} else if (this.isSerifFont) {
this.fallbackName = "serif";
} else {
this.fallbackName = "sans-serif";
}
this.differences = properties.differences;
this.widths = properties.widths;
this.defaultWidth = properties.defaultWidth;
this.composite = properties.composite;
this.cMap = properties.cMap;
this.capHeight = properties.capHeight / PDF_GLYPH_SPACE_UNITS;
this.ascent = properties.ascent / PDF_GLYPH_SPACE_UNITS;
this.descent = properties.descent / PDF_GLYPH_SPACE_UNITS;
this.lineHeight = this.ascent - this.descent;
this.fontMatrix = properties.fontMatrix;
this.bbox = properties.bbox;
this.defaultEncoding = properties.defaultEncoding;
this.toUnicode = properties.toUnicode;
this.toFontChar = [];
if (properties.type === "Type3") {
for (let charCode = 0; charCode < 256; charCode++) {
this.toFontChar[charCode] = this.differences[charCode] || properties.defaultEncoding[charCode];
}
this.fontType = _util.FontType.TYPE3;
return;
}
this.cidEncoding = properties.cidEncoding || "";
this.vertical = !!properties.vertical;
if (this.vertical) {
this.vmetrics = properties.vmetrics;
this.defaultVMetrics = properties.defaultVMetrics;
}
if (!file || file.isEmpty) {
if (file) {
(0, _util.warn)('Font file is empty in "' + name + '" (' + this.loadedName + ")");
}
this.fallbackToSystemFont(properties);
return;
}
[type, subtype] = getFontFileType(file, properties);
if (type !== this.type || subtype !== this.subtype) {
(0, _util.info)("Inconsistent font file Type/SubType, expected: " + `${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 = /bold/gi.test(fontName);
this.italic = /oblique|italic/gi.test(fontName);
this.black = /Black/g.test(name);
const isNarrow = /Narrow/g.test(name);
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 (/Tahoma|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.sizeOfInstruc