pdfjs-dist/lib/core/fonts.js

/* Copyright 2017 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
'use strict';

var sharedUtil = require('../shared/util.js');
var corePrimitives = require('./primitives.js');
var coreStream = require('./stream.js');
var coreGlyphList = require('./glyphlist.js');
var coreFontRenderer = require('./font_renderer.js');
var coreEncodings = require('./encodings.js');
var coreStandardFonts = require('./standard_fonts.js');
var coreUnicode = require('./unicode.js');
var coreType1Parser = require('./type1_parser.js');
var coreCFFParser = require('./cff_parser.js');
var FONT_IDENTITY_MATRIX = sharedUtil.FONT_IDENTITY_MATRIX;
var FontType = sharedUtil.FontType;
var assert = sharedUtil.assert;
var bytesToString = sharedUtil.bytesToString;
var error = sharedUtil.error;
var info = sharedUtil.info;
var isArray = sharedUtil.isArray;
var isInt = sharedUtil.isInt;
var isNum = sharedUtil.isNum;
var readUint32 = sharedUtil.readUint32;
var shadow = sharedUtil.shadow;
var string32 = sharedUtil.string32;
var warn = sharedUtil.warn;
var MissingDataException = sharedUtil.MissingDataException;
var isSpace = sharedUtil.isSpace;
var Stream = coreStream.Stream;
var getGlyphsUnicode = coreGlyphList.getGlyphsUnicode;
var getDingbatsGlyphsUnicode = coreGlyphList.getDingbatsGlyphsUnicode;
var FontRendererFactory = coreFontRenderer.FontRendererFactory;
var StandardEncoding = coreEncodings.StandardEncoding;
var MacRomanEncoding = coreEncodings.MacRomanEncoding;
var SymbolSetEncoding = coreEncodings.SymbolSetEncoding;
var ZapfDingbatsEncoding = coreEncodings.ZapfDingbatsEncoding;
var getEncoding = coreEncodings.getEncoding;
var getStdFontMap = coreStandardFonts.getStdFontMap;
var getNonStdFontMap = coreStandardFonts.getNonStdFontMap;
var getGlyphMapForStandardFonts = coreStandardFonts.getGlyphMapForStandardFonts;
var getSupplementalGlyphMapForArialBlack = coreStandardFonts.getSupplementalGlyphMapForArialBlack;
var getUnicodeRangeFor = coreUnicode.getUnicodeRangeFor;
var mapSpecialUnicodeValues = coreUnicode.mapSpecialUnicodeValues;
var getUnicodeForGlyph = coreUnicode.getUnicodeForGlyph;
var Type1Parser = coreType1Parser.Type1Parser;
var CFFStandardStrings = coreCFFParser.CFFStandardStrings;
var CFFParser = coreCFFParser.CFFParser;
var CFFCompiler = coreCFFParser.CFFCompiler;
var CFF = coreCFFParser.CFF;
var CFFHeader = coreCFFParser.CFFHeader;
var CFFTopDict = coreCFFParser.CFFTopDict;
var CFFPrivateDict = coreCFFParser.CFFPrivateDict;
var CFFStrings = coreCFFParser.CFFStrings;
var CFFIndex = coreCFFParser.CFFIndex;
var CFFCharset = coreCFFParser.CFFCharset;
var PRIVATE_USE_OFFSET_START = 0xE000;
var PRIVATE_USE_OFFSET_END = 0xF8FF;
var SKIP_PRIVATE_USE_RANGE_F000_TO_F01F = false;
var PDF_GLYPH_SPACE_UNITS = 1000;
var SEAC_ANALYSIS_ENABLED = false;
var FontFlags = {
  FixedPitch: 1,
  Serif: 2,
  Symbolic: 4,
  Script: 8,
  Nonsymbolic: 32,
  Italic: 64,
  AllCap: 65536,
  SmallCap: 131072,
  ForceBold: 262144
};
var MacStandardGlyphOrdering = ['.notdef', '.null', 'nonmarkingreturn', 'space', 'exclam', 'quotedbl', 'numbersign', 'dollar', 'percent', 'ampersand', 'quotesingle', 'parenleft', 'parenright', 'asterisk', 'plus', 'comma', 'hyphen', 'period', 'slash', 'zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'colon', 'semicolon', 'less', 'equal', 'greater', 'question', 'at', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'bracketleft', 'backslash', 'bracketright', 'asciicircum', 'underscore', 'grave', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'braceleft', 'bar', 'braceright', 'asciitilde', 'Adieresis', 'Aring', 'Ccedilla', 'Eacute', 'Ntilde', 'Odieresis', 'Udieresis', 'aacute', 'agrave', 'acircumflex', 'adieresis', 'atilde', 'aring', 'ccedilla', 'eacute', 'egrave', 'ecircumflex', 'edieresis', 'iacute', 'igrave', 'icircumflex', 'idieresis', 'ntilde', 'oacute', 'ograve', 'ocircumflex', 'odieresis', 'otilde', 'uacute', 'ugrave', 'ucircumflex', 'udieresis', 'dagger', 'degree', 'cent', 'sterling', 'section', 'bullet', 'paragraph', 'germandbls', 'registered', 'copyright', 'trademark', 'acute', 'dieresis', 'notequal', 'AE', 'Oslash', 'infinity', 'plusminus', 'lessequal', 'greaterequal', 'yen', 'mu', 'partialdiff', 'summation', 'product', 'pi', 'integral', 'ordfeminine', 'ordmasculine', 'Omega', 'ae', 'oslash', 'questiondown', 'exclamdown', 'logicalnot', 'radical', 'florin', 'approxequal', 'Delta', 'guillemotleft', 'guillemotright', 'ellipsis', 'nonbreakingspace', 'Agrave', 'Atilde', 'Otilde', 'OE', 'oe', 'endash', 'emdash', 'quotedblleft', 'quotedblright', 'quoteleft', 'quoteright', 'divide', 'lozenge', 'ydieresis', 'Ydieresis', 'fraction', 'currency', 'guilsinglleft', 'guilsinglright', 'fi', 'fl', 'daggerdbl', 'periodcentered', 'quotesinglbase', 'quotedblbase', 'perthousand', 'Acircumflex', 'Ecircumflex', 'Aacute', 'Edieresis', 'Egrave', 'Iacute', 'Icircumflex', 'Idieresis', 'Igrave', 'Oacute', 'Ocircumflex', 'apple', 'Ograve', 'Uacute', 'Ucircumflex', 'Ugrave', 'dotlessi', 'circumflex', 'tilde', 'macron', 'breve', 'dotaccent', 'ring', 'cedilla', 'hungarumlaut', 'ogonek', 'caron', 'Lslash', 'lslash', 'Scaron', 'scaron', 'Zcaron', 'zcaron', 'brokenbar', 'Eth', 'eth', 'Yacute', 'yacute', 'Thorn', 'thorn', 'minus', 'multiply', 'onesuperior', 'twosuperior', 'threesuperior', 'onehalf', 'onequarter', 'threequarters', 'franc', 'Gbreve', 'gbreve', 'Idotaccent', 'Scedilla', 'scedilla', 'Cacute', 'cacute', 'Ccaron', 'ccaron', 'dcroat'];
function adjustWidths(properties) {
  if (!properties.fontMatrix) {
    return;
  }
  if (properties.fontMatrix[0] === FONT_IDENTITY_MATRIX[0]) {
    return;
  }
  var scale = 0.001 / properties.fontMatrix[0];
  var glyphsWidths = properties.widths;
  for (var glyph in glyphsWidths) {
    glyphsWidths[glyph] *= scale;
  }
  properties.defaultWidth *= scale;
}
function adjustToUnicode(properties, builtInEncoding) {
  if (properties.hasIncludedToUnicodeMap) {
    return;
  }
  if (properties.hasEncoding) {
    return;
  }
  if (builtInEncoding === properties.defaultEncoding) {
    return;
  }
  if (properties.toUnicode instanceof IdentityToUnicodeMap) {
    return;
  }
  var toUnicode = [],
      glyphsUnicodeMap = getGlyphsUnicode();
  for (var charCode in builtInEncoding) {
    var glyphName = builtInEncoding[charCode];
    var unicode = getUnicodeForGlyph(glyphName, glyphsUnicodeMap);
    if (unicode !== -1) {
      toUnicode[charCode] = String.fromCharCode(unicode);
    }
  }
  properties.toUnicode.amend(toUnicode);
}
function getFontType(type, subtype) {
  switch (type) {
    case 'Type1':
      return subtype === 'Type1C' ? FontType.TYPE1C : FontType.TYPE1;
    case 'CIDFontType0':
      return subtype === 'CIDFontType0C' ? FontType.CIDFONTTYPE0C : FontType.CIDFONTTYPE0;
    case 'OpenType':
      return FontType.OPENTYPE;
    case 'TrueType':
      return FontType.TRUETYPE;
    case 'CIDFontType2':
      return FontType.CIDFONTTYPE2;
    case 'MMType1':
      return FontType.MMTYPE1;
    case 'Type0':
      return FontType.TYPE0;
    default:
      return FontType.UNKNOWN;
  }
}
function recoverGlyphName(name, glyphsUnicodeMap) {
  if (glyphsUnicodeMap[name] !== undefined) {
    return name;
  }
  var unicode = getUnicodeForGlyph(name, glyphsUnicodeMap);
  if (unicode !== -1) {
    for (var key in glyphsUnicodeMap) {
      if (glyphsUnicodeMap[key] === unicode) {
        return key;
      }
    }
  }
  info('Unable to recover a standard glyph name for: ' + name);
  return name;
}
var Glyph = function GlyphClosure() {
  function Glyph(fontChar, unicode, accent, width, vmetric, operatorListId, isSpace, isInFont) {
    this.fontChar = fontChar;
    this.unicode = unicode;
    this.accent = accent;
    this.width = width;
    this.vmetric = vmetric;
    this.operatorListId = operatorListId;
    this.isSpace = isSpace;
    this.isInFont = isInFont;
  }
  Glyph.prototype.matchesForCache = function (fontChar, unicode, accent, width, vmetric, operatorListId, isSpace, isInFont) {
    return this.fontChar === fontChar && this.unicode === unicode && this.accent === accent && this.width === width && this.vmetric === vmetric && this.operatorListId === operatorListId && this.isSpace === isSpace && this.isInFont === isInFont;
  };
  return Glyph;
}();
var ToUnicodeMap = function ToUnicodeMapClosure() {
  function ToUnicodeMap(cmap) {
    this._map = cmap;
  }
  ToUnicodeMap.prototype = {
    get length() {
      return this._map.length;
    },
    forEach: function forEach(callback) {
      for (var charCode in this._map) {
        callback(charCode, this._map[charCode].charCodeAt(0));
      }
    },
    has: function has(i) {
      return this._map[i] !== undefined;
    },
    get: function get(i) {
      return this._map[i];
    },
    charCodeOf: function charCodeOf(value) {
      var map = this._map;
      if (map.length <= 0x10000) {
        return map.indexOf(value);
      }
      for (var charCode in map) {
        if (map[charCode] === value) {
          return charCode | 0;
        }
      }
      return -1;
    },
    amend: function amend(map) {
      for (var charCode in map) {
        this._map[charCode] = map[charCode];
      }
    }
  };
  return ToUnicodeMap;
}();
var IdentityToUnicodeMap = function IdentityToUnicodeMapClosure() {
  function IdentityToUnicodeMap(firstChar, lastChar) {
    this.firstChar = firstChar;
    this.lastChar = lastChar;
  }
  IdentityToUnicodeMap.prototype = {
    get length() {
      return this.lastChar + 1 - this.firstChar;
    },
    forEach: function forEach(callback) {
      for (var i = this.firstChar, ii = this.lastChar; i <= ii; i++) {
        callback(i, i);
      }
    },
    has: function has(i) {
      return this.firstChar <= i && i <= this.lastChar;
    },
    get: function get(i) {
      if (this.firstChar <= i && i <= this.lastChar) {
        return String.fromCharCode(i);
      }
      return undefined;
    },
    charCodeOf: function charCodeOf(v) {
      return isInt(v) && v >= this.firstChar && v <= this.lastChar ? v : -1;
    },
    amend: function amend(map) {
      error('Should not call amend()');
    }
  };
  return IdentityToUnicodeMap;
}();
var OpenTypeFileBuilder = function OpenTypeFileBuilderClosure() {
  function writeInt16(dest, offset, num) {
    dest[offset] = num >> 8 & 0xFF;
    dest[offset + 1] = num & 0xFF;
  }
  function writeInt32(dest, offset, num) {
    dest[offset] = num >> 24 & 0xFF;
    dest[offset + 1] = num >> 16 & 0xFF;
    dest[offset + 2] = num >> 8 & 0xFF;
    dest[offset + 3] = num & 0xFF;
  }
  function writeData(dest, offset, data) {
    var i, ii;
    if (data instanceof Uint8Array) {
      dest.set(data, offset);
    } else if (typeof data === 'string') {
      for (i = 0, ii = data.length; i < ii; i++) {
        dest[offset++] = data.charCodeAt(i) & 0xFF;
      }
    } else {
      for (i = 0, ii = data.length; i < ii; i++) {
        dest[offset++] = data[i] & 0xFF;
      }
    }
  }
  function OpenTypeFileBuilder(sfnt) {
    this.sfnt = sfnt;
    this.tables = Object.create(null);
  }
  OpenTypeFileBuilder.getSearchParams = function OpenTypeFileBuilder_getSearchParams(entriesCount, entrySize) {
    var maxPower2 = 1,
        log2 = 0;
    while ((maxPower2 ^ entriesCount) > maxPower2) {
      maxPower2 <<= 1;
      log2++;
    }
    var searchRange = maxPower2 * entrySize;
    return {
      range: searchRange,
      entry: log2,
      rangeShift: entrySize * entriesCount - searchRange
    };
  };
  var OTF_HEADER_SIZE = 12;
  var OTF_TABLE_ENTRY_SIZE = 16;
  OpenTypeFileBuilder.prototype = {
    toArray: function OpenTypeFileBuilder_toArray() {
      var sfnt = this.sfnt;
      var tables = this.tables;
      var tablesNames = Object.keys(tables);
      tablesNames.sort();
      var numTables = tablesNames.length;
      var i, j, jj, table, tableName;
      var offset = OTF_HEADER_SIZE + numTables * OTF_TABLE_ENTRY_SIZE;
      var tableOffsets = [offset];
      for (i = 0; i < numTables; i++) {
        table = tables[tablesNames[i]];
        var paddedLength = (table.length + 3 & ~3) >>> 0;
        offset += paddedLength;
        tableOffsets.push(offset);
      }
      var file = new Uint8Array(offset);
      for (i = 0; i < numTables; i++) {
        table = tables[tablesNames[i]];
        writeData(file, tableOffsets[i], table);
      }
      if (sfnt === 'true') {
        sfnt = string32(0x00010000);
      }
      file[0] = sfnt.charCodeAt(0) & 0xFF;
      file[1] = sfnt.charCodeAt(1) & 0xFF;
      file[2] = sfnt.charCodeAt(2) & 0xFF;
      file[3] = sfnt.charCodeAt(3) & 0xFF;
      writeInt16(file, 4, numTables);
      var searchParams = OpenTypeFileBuilder.getSearchParams(numTables, 16);
      writeInt16(file, 6, searchParams.range);
      writeInt16(file, 8, searchParams.entry);
      writeInt16(file, 10, searchParams.rangeShift);
      offset = OTF_HEADER_SIZE;
      for (i = 0; i < numTables; i++) {
        tableName = tablesNames[i];
        file[offset] = tableName.charCodeAt(0) & 0xFF;
        file[offset + 1] = tableName.charCodeAt(1) & 0xFF;
        file[offset + 2] = tableName.charCodeAt(2) & 0xFF;
        file[offset + 3] = tableName.charCodeAt(3) & 0xFF;
        var checksum = 0;
        for (j = tableOffsets[i], jj = tableOffsets[i + 1]; j < jj; j += 4) {
          var quad = readUint32(file, j);
          checksum = checksum + quad >>> 0;
        }
        writeInt32(file, offset + 4, checksum);
        writeInt32(file, offset + 8, tableOffsets[i]);
        writeInt32(file, offset + 12, tables[tableName].length);
        offset += OTF_TABLE_ENTRY_SIZE;
      }
      return file;
    },
    addTable: function OpenTypeFileBuilder_addTable(tag, data) {
      if (tag in this.tables) {
        throw new Error('Table ' + tag + ' already exists');
      }
      this.tables[tag] = data;
    }
  };
  return OpenTypeFileBuilder;
}();
var ProblematicCharRanges = new Int32Array([0x0000, 0x0020, 0x007F, 0x00A1, 0x00AD, 0x00AE, 0x0600, 0x0780, 0x08A0, 0x10A0, 0x1780, 0x1800, 0x1C00, 0x1C50, 0x2000, 0x2010, 0x2011, 0x2012, 0x2028, 0x2030, 0x205F, 0x2070, 0x25CC, 0x25CD, 0x3000, 0x3001, 0x3164, 0x3165, 0xAA60, 0xAA80, 0xFFF0, 0x10000]);
var Font = function FontClosure() {
  function Font(name, file, properties) {
    var _this = this;

    var charCode, glyphName, unicode;
    this.name = name;
    this.loadedName = properties.loadedName;
    this.isType3Font = properties.isType3Font;
    this.sizes = [];
    this.missingFile = false;
    this.glyphCache = Object.create(null);
    this.isSerifFont = !!(properties.flags & FontFlags.Serif);
    this.isSymbolicFont = !!(properties.flags & FontFlags.Symbolic);
    this.isMonospace = !!(properties.flags & FontFlags.FixedPitch);
    var type = properties.type;
    var subtype = properties.subtype;
    this.type = type;
    this.fallbackName = this.isMonospace ? 'monospace' : this.isSerifFont ? 'serif' : 'sans-serif';
    this.differences = properties.differences;
    this.widths = properties.widths;
    this.defaultWidth = properties.defaultWidth;
    this.composite = properties.composite;
    this.wideChars = properties.wideChars;
    this.cMap = properties.cMap;
    this.ascent = properties.ascent / PDF_GLYPH_SPACE_UNITS;
    this.descent = properties.descent / PDF_GLYPH_SPACE_UNITS;
    this.fontMatrix = properties.fontMatrix;
    this.bbox = properties.bbox;
    this.toUnicode = properties.toUnicode;
    this.toFontChar = [];
    if (properties.type === 'Type3') {
      for (charCode = 0; charCode < 256; charCode++) {
        this.toFontChar[charCode] = this.differences[charCode] || properties.defaultEncoding[charCode];
      }
      this.fontType = FontType.TYPE3;
      return;
    }
    this.cidEncoding = properties.cidEncoding;
    this.vertical = properties.vertical;
    if (this.vertical) {
      this.vmetrics = properties.vmetrics;
      this.defaultVMetrics = properties.defaultVMetrics;
    }
    var glyphsUnicodeMap;
    if (!file || file.isEmpty) {
      if (file) {
        warn('Font file is empty in "' + name + '" (' + this.loadedName + ')');
      }
      this.missingFile = true;
      var fontName = name.replace(/[,_]/g, '-');
      var stdFontMap = getStdFontMap(),
          nonStdFontMap = getNonStdFontMap();
      var isStandardFont = !!stdFontMap[fontName] || !!(nonStdFontMap[fontName] && stdFontMap[nonStdFontMap[fontName]]);
      fontName = stdFontMap[fontName] || nonStdFontMap[fontName] || fontName;
      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;
      this.remeasure = Object.keys(this.widths).length > 0;
      if (isStandardFont && type === 'CIDFontType2' && properties.cidEncoding.indexOf('Identity-') === 0) {
        var GlyphMapForStandardFonts = getGlyphMapForStandardFonts();
        var map = [];
        for (charCode in GlyphMapForStandardFonts) {
          map[+charCode] = GlyphMapForStandardFonts[charCode];
        }
        if (/Arial-?Black/i.test(name)) {
          var SupplementalGlyphMapForArialBlack = getSupplementalGlyphMapForArialBlack();
          for (charCode in SupplementalGlyphMapForArialBlack) {
            map[+charCode] = SupplementalGlyphMapForArialBlack[charCode];
          }
        }
        var isIdentityUnicode = this.toUnicode instanceof IdentityToUnicodeMap;
        if (!isIdentityUnicode) {
          this.toUnicode.forEach(function (charCode, unicodeCharCode) {
            map[+charCode] = unicodeCharCode;
          });
        }
        this.toFontChar = map;
        this.toUnicode = new ToUnicodeMap(map);
      } else if (/Symbol/i.test(fontName)) {
        this.toFontChar = buildToFontChar(SymbolSetEncoding, getGlyphsUnicode(), properties.differences);
      } else if (/Dingbats/i.test(fontName)) {
        if (/Wingdings/i.test(name)) {
          warn('Non-embedded Wingdings font, falling back to ZapfDingbats.');
        }
        this.toFontChar = buildToFontChar(ZapfDingbatsEncoding, getDingbatsGlyphsUnicode(), properties.differences);
      } else if (isStandardFont) {
        this.toFontChar = buildToFontChar(properties.defaultEncoding, getGlyphsUnicode(), properties.differences);
      } else {
        glyphsUnicodeMap = getGlyphsUnicode();
        this.toUnicode.forEach(function (charCode, unicodeCharCode) {
          if (!_this.composite) {
            glyphName = properties.differences[charCode] || properties.defaultEncoding[charCode];
            unicode = getUnicodeForGlyph(glyphName, glyphsUnicodeMap);
            if (unicode !== -1) {
              unicodeCharCode = unicode;
            }
          }
          _this.toFontChar[charCode] = unicodeCharCode;
        });
      }
      this.loadedName = fontName.split('-')[0];
      this.loading = false;
      this.fontType = getFontType(type, subtype);
      return;
    }
    if (subtype === 'Type1C') {
      if (type !== 'Type1' && type !== 'MMType1') {
        if (isTrueTypeFile(file)) {
          subtype = 'TrueType';
        } else {
          type = 'Type1';
        }
      } else if (isOpenTypeFile(file)) {
        type = subtype = 'OpenType';
      }
    }
    if (subtype === 'CIDFontType0C' && type !== 'CIDFontType0') {
      type = 'CIDFontType0';
    }
    if (subtype === 'OpenType') {
      type = 'OpenType';
    }
    if (type === 'CIDFontType0') {
      if (isType1File(file)) {
        subtype = 'CIDFontType0';
      } else if (isOpenTypeFile(file)) {
        type = subtype = 'OpenType';
      } else {
        subtype = 'CIDFontType0C';
      }
    }
    var data;
    switch (type) {
      case 'MMType1':
        info('MMType1 font (' + name + '), falling back to Type1.');
      case 'Type1':
      case 'CIDFontType0':
        this.mimetype = 'font/opentype';
        var cff = subtype === 'Type1C' || subtype === 'CIDFontType0C' ? new CFFFont(file, properties) : new 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:
        error('Font ' + type + ' is not supported');
        break;
    }
    this.data = data;
    this.fontType = getFontType(type, subtype);
    this.fontMatrix = properties.fontMatrix;
    this.widths = properties.widths;
    this.defaultWidth = properties.defaultWidth;
    this.toUnicode = properties.toUnicode;
    this.encoding = properties.baseEncoding;
    this.seacMap = properties.seacMap;
    this.loading = true;
  }
  Font.getFontID = function () {
    var ID = 1;
    return function Font_getFontID() {
      return String(ID++);
    };
  }();
  function int16(b0, b1) {
    return (b0 << 8) + b1;
  }
  function signedInt16(b0, b1) {
    var 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) {
    value = value > 0x7FFF ? 0x7FFF : value < -0x8000 ? -0x8000 : value;
    return String.fromCharCode(value >> 8 & 0xff, value & 0xff);
  }
  function isTrueTypeFile(file) {
    var header = file.peekBytes(4);
    return readUint32(header, 0) === 0x00010000;
  }
  function isOpenTypeFile(file) {
    var header = file.peekBytes(4);
    return bytesToString(header) === 'OTTO';
  }
  function isType1File(file) {
    var 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 buildToFontChar(encoding, glyphsUnicodeMap, differences) {
    var toFontChar = [],
        unicode;
    for (var i = 0, ii = encoding.length; i < ii; i++) {
      unicode = getUnicodeForGlyph(encoding[i], glyphsUnicodeMap);
      if (unicode !== -1) {
        toFontChar[i] = unicode;
      }
    }
    for (var charCode in differences) {
      unicode = getUnicodeForGlyph(differences[charCode], glyphsUnicodeMap);
      if (unicode !== -1) {
        toFontChar[+charCode] = unicode;
      }
    }
    return toFontChar;
  }
  function isProblematicUnicodeLocation(code) {
    var i = 0,
        j = ProblematicCharRanges.length - 1;
    while (i < j) {
      var c = i + j + 1 >> 1;
      if (code < ProblematicCharRanges[c]) {
        j = c - 1;
      } else {
        i = c;
      }
    }
    return !(i & 1);
  }
  function adjustMapping(charCodeToGlyphId, properties) {
    var toUnicode = properties.toUnicode;
    var isSymbolic = !!(properties.flags & FontFlags.Symbolic);
    var isIdentityUnicode = properties.toUnicode instanceof IdentityToUnicodeMap;
    var newMap = Object.create(null);
    var toFontChar = [];
    var usedFontCharCodes = [];
    var nextAvailableFontCharCode = PRIVATE_USE_OFFSET_START;
    for (var originalCharCode in charCodeToGlyphId) {
      originalCharCode |= 0;
      var glyphId = charCodeToGlyphId[originalCharCode];
      var fontCharCode = originalCharCode;
      var hasUnicodeValue = false;
      if (!isIdentityUnicode && toUnicode.has(originalCharCode)) {
        hasUnicodeValue = true;
        var unicode = toUnicode.get(fontCharCode);
        if (unicode.length === 1) {
          fontCharCode = unicode.charCodeAt(0);
        }
      }
      if ((usedFontCharCodes[fontCharCode] !== undefined || isProblematicUnicodeLocation(fontCharCode) || isSymbolic && !hasUnicodeValue) && nextAvailableFontCharCode <= PRIVATE_USE_OFFSET_END) {
        do {
          fontCharCode = nextAvailableFontCharCode++;
          if (SKIP_PRIVATE_USE_RANGE_F000_TO_F01F && fontCharCode === 0xF000) {
            fontCharCode = 0xF020;
            nextAvailableFontCharCode = fontCharCode + 1;
          }
        } while (usedFontCharCodes[fontCharCode] !== undefined && nextAvailableFontCharCode <= PRIVATE_USE_OFFSET_END);
      }
      newMap[fontCharCode] = glyphId;
      toFontChar[originalCharCode] = fontCharCode;
      usedFontCharCodes[fontCharCode] = true;
    }
    return {
      toFontChar: toFontChar,
      charCodeToGlyphId: newMap,
      nextAvailableFontCharCode: nextAvailableFontCharCode
    };
  }
  function getRanges(glyphs, numGlyphs) {
    var codes = [];
    for (var charCode in glyphs) {
      if (glyphs[charCode] >= numGlyphs) {
        continue;
      }
      codes.push({
        fontCharCode: charCode | 0,
        glyphId: glyphs[charCode]
      });
    }
    codes.sort(function fontGetRangesSort(a, b) {
      return a.fontCharCode - b.fontCharCode;
    });
    var ranges = [];
    var length = codes.length;
    for (var n = 0; n < length;) {
      var start = codes[n].fontCharCode;
      var codeIndices = [codes[n].glyphId];
      ++n;
      var 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, numGlyphs) {
    var ranges = getRanges(glyphs, numGlyphs);
    var numTables = ranges[ranges.length - 1][1] > 0xFFFF ? 2 : 1;
    var cmap = '\x00\x00' + string16(numTables) + '\x00\x03' + '\x00\x01' + string32(4 + numTables * 8);
    var i, ii, j, jj;
    for (i = ranges.length - 1; i >= 0; --i) {
      if (ranges[i][0] <= 0xFFFF) {
        break;
      }
    }
    var bmpLength = i + 1;
    if (ranges[i][0] < 0xFFFF && ranges[i][1] === 0xFFFF) {
      ranges[i][1] = 0xFFFE;
    }
    var trailingRangesCount = ranges[i][1] < 0xFFFF ? 1 : 0;
    var segCount = bmpLength + trailingRangesCount;
    var searchParams = OpenTypeFileBuilder.getSearchParams(segCount, 2);
    var startCount = '';
    var endCount = '';
    var idDeltas = '';
    var idRangeOffsets = '';
    var glyphsIds = '';
    var bias = 0;
    var 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];
      var contiguous = true;
      for (j = 1, jj = codes.length; j < jj; ++j) {
        if (codes[j] !== codes[j - 1] + 1) {
          contiguous = false;
          break;
        }
      }
      if (!contiguous) {
        var 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 {
        var 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';
    }
    var format314 = '\x00\x00' + string16(2 * segCount) + string16(searchParams.range) + string16(searchParams.entry) + string16(searchParams.rangeShift) + endCount + '\x00\x00' + startCount + idDeltas + idRangeOffsets + glyphsIds;
    var format31012 = '';
    var header31012 = '';
    if (numTables > 1) {
      cmap += '\x00\x03' + '\x00\x0A' + 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];
        var 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 += string32(start) + string32(end) + string32(code);
            start = end + 1;
            code = codes[j];
          }
        }
        format31012 += string32(start) + string32(range[1]) + string32(code);
      }
      header31012 = '\x00\x0C' + '\x00\x00' + string32(format31012.length + 16) + '\x00\x00\x00\x00' + string32(format31012.length / 12);
    }
    return cmap + '\x00\x04' + string16(format314.length + 4) + format314 + header31012 + format31012;
  }
  function validateOS2Table(os2) {
    var stream = new Stream(os2.data);
    var version = stream.getUint16();
    stream.getBytes(60);
    var selection = stream.getUint16();
    if (version < 4 && selection & 0x0300) {
      return false;
    }
    var firstChar = stream.getUint16();
    var lastChar = stream.getUint16();
    if (firstChar > lastChar) {
      return false;
    }
    stream.getBytes(6);
    var usWinAscent = stream.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
    };
    var ulUnicodeRange1 = 0;
    var ulUnicodeRange2 = 0;
    var ulUnicodeRange3 = 0;
    var ulUnicodeRange4 = 0;
    var firstCharIndex = null;
    var lastCharIndex = 0;
    if (charstrings) {
      for (var code in charstrings) {
        code |= 0;
        if (firstCharIndex > code || !firstCharIndex) {
          firstCharIndex = code;
        }
        if (lastCharIndex < code) {
          lastCharIndex = code;
        }
        var position = 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 {
          error('Unicode ranges Bits > 123 are reserved for internal usage');
        }
      }
    } else {
      firstCharIndex = 0;
      lastCharIndex = 255;
    }
    var bbox = properties.bbox || [0, 0, 0, 0];
    var unitsPerEm = override.unitsPerEm || 1 / (properties.fontMatrix || FONT_IDENTITY_MATRIX)[0];
    var scale = properties.ascentScaled ? 1.0 : unitsPerEm / PDF_GLYPH_SPACE_UNITS;
    var typoAscent = override.ascent || Math.round(scale * (properties.ascent || bbox[3]));
    var typoDescent = override.descent || Math.round(scale * (properties.descent || bbox[1]));
    if (typoDescent > 0 && properties.descent > 0 && bbox[1] < 0) {
      typoDescent = -typoDescent;
    }
    var winAscent = override.yMax || typoAscent;
    var 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' + string32(ulUnicodeRange1) + string32(ulUnicodeRange2) + string32(ulUnicodeRange3) + 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) {
    var angle = Math.floor(properties.italicAngle * Math.pow(2, 16));
    return '\x00\x03\x00\x00' + string32(angle) + '\x00\x00' + '\x00\x00' + string32(properties.fixedPitch) + '\x00\x00\x00\x00' + '\x00\x00\x00\x00' + '\x00\x00\x00\x00' + '\x00\x00\x00\x00';
  }
  function createNameTable(name, proto) {
    if (!proto) {
      proto = [[], []];
    }
    var 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] || '', proto[0][7] || 'Unknown', proto[0][8] || 'Unknown', proto[0][9] || 'Unknown'];
    var stringsUnicode = [];
    var i, ii, j, jj, str;
    for (i = 0, ii = strings.length; i < ii; i++) {
      str = proto[1][i] || strings[i];
      var strBufUnicode = [];
      for (j = 0, jj = str.length; j < jj; j++) {
        strBufUnicode.push(string16(str.charCodeAt(j)));
      }
      stringsUnicode.push(strBufUnicode.join(''));
    }
    var names = [strings, stringsUnicode];
    var platforms = ['\x00\x01', '\x00\x03'];
    var encodings = ['\x00\x00', '\x00\x01'];
    var languages = ['\x00\x00', '\x04\x09'];
    var namesRecordCount = strings.length * platforms.length;
    var nameTable = '\x00\x00' + string16(namesRecordCount) + string16(namesRecordCount * 12 + 6);
    var strOffset = 0;
    for (i = 0, ii = platforms.length; i < ii; i++) {
      var strs = names[i];
      for (j = 0, jj = strs.length; j < jj; j++) {
        str = strs[j];
        var 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;
  }
  Font.prototype = {
    name: null,
    font: null,
    mimetype: null,
    encoding: null,
    get renderer() {
      var renderer = FontRendererFactory.create(this, SEAC_ANALYSIS_ENABLED);
      return shadow(this, 'renderer', renderer);
    },
    exportData: function Font_exportData() {
      var data = {};
      for (var i in this) {
        if (this.hasOwnProperty(i)) {
          data[i] = this[i];
        }
      }
      return data;
    },
    checkAndRepair: function Font_checkAndRepair(name, font, properties) {
      function readTableEntry(file) {
        var tag = bytesToString(file.getBytes(4));
        var checksum = file.getInt32() >>> 0;
        var offset = file.getInt32() >>> 0;
        var length = file.getInt32() >>> 0;
        var previousPosition = file.pos;
        file.pos = file.start ? file.start : 0;
        file.skip(offset);
        var data = file.getBytes(length);
        file.pos = previousPosition;
        if (tag === 'head') {
          data[8] = data[9] = data[10] = data[11] = 0;
          data[17] |= 0x20;
        }
        return {
          tag: tag,
          checksum: checksum,
          length: length,
          offset: offset,
          data: data
        };
      }
      function readOpenTypeHeader(ttf) {
        return {
          version: bytesToString(ttf.getBytes(4)),
          numTables: ttf.getUint16(),
          searchRange: ttf.getUint16(),
          entrySelector: ttf.getUint16(),
          rangeShift: ttf.getUint16()
        };
      }
      function readCmapTable(cmap, font, isSymbolicFont, hasEncoding) {
        if (!cmap) {
          warn('No cmap table available.');
          return {
            platformId: -1,
            encodingId: -1,
            mappings: [],
            hasShortCmap: false
          };
        }
        var segment;
        var start = (font.start ? font.start : 0) + cmap.offset;
        font.pos = start;
        font.getUint16();
        var numTables = font.getUint16();
        var potentialTable;
        var canBreak = false;
        for (var i = 0; i < numTables; i++) {
          var platformId = font.getUint16();
          var encodingId = font.getUint16();
          var offset = font.getInt32() >>> 0;
          var useTable = false;
          if (platformId === 0 && encodingId === 0) {
            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;
            canBreak = true;
          }
          if (useTable) {
            potentialTable = {
              platformId: platformId,
              encodingId: encodingId,
              offset: offset
            };
          }
          if (canBreak) {
            break;
          }
        }
        if (potentialTable) {
          font.pos = start + potentialTable.offset;
        }
        if (!potentialTable || font.peekByte() === -1) {
          warn('Could not find a preferred cmap table.');
          return {
            platformId: -1,
            encodingId: -1,
            mappings: [],
            hasShortCmap: false
          };
        }
        var format = font.getUint16();
        font.getUint16();
        font.getUint16();
        var hasShortCmap = false;
        var mappings = [];
        var j, glyphId;
        if (format === 0) {
          for (j = 0; j < 256; j++) {
            var index = font.getByte();
            if (!index) {
              continue;
            }
            mappings.push({
              charCode: j,
              glyphId: index
            });
          }
          hasShortCmap = true;
        } else if (format === 4) {
          var segCount = font.getUint16() >> 1;
          font.getBytes(6);
          var segIndex,
              segments = [];
          for (segIndex = 0; segIndex < segCount; segIndex++) {
            segments.push({ end: font.getUint16() });
          }
          font.getUint16();
          for (segIndex = 0; segIndex < segCount; segIndex++) {
            segments[segIndex].start = font.getUint16();
          }
          for (segIndex = 0; segIndex < segCount; segIndex++) {
            segments[segIndex].delta = font.getUint16();
          }
          var offsetsCount = 0;
          for (segIndex = 0; segIndex < segCount; segIndex++) {
            segment = segments[segIndex];
            var rangeOffset = font.getUint16();
            if (!rangeOffset) {
              segment.offsetIndex = -1;
              continue;
            }
            var offsetIndex = (rangeOffset >> 1) - (segCount - segIndex);
            segment.offsetIndex = offsetIndex;
            offsetsCount = Math.max(offsetsCount, offsetIndex + segment.end - segment.start + 1);
          }
          var offsets = [];
          for (j = 0; j < offsetsCount; j++) {
            offsets.push(font.getUint16());
          }
          for (segIndex = 0; segIndex < segCount; segIndex++) {
            segment = segments[segIndex];
            start = segment.start;
            var end = segment.end;
            var 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: glyphId
              });
            }
          }
        } else if (format === 6) {
          var firstCode = font.getUint16();
          var entryCount = font.getUint16();
          for (j = 0; j < entryCount; j++) {
            glyphId = font.getUint16();
            var charCode = firstCode + j;
            mappings.push({
              charCode: charCode,
              glyphId: glyphId
            });
          }
        } else {
          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 (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: mappings,
          hasShortCmap: hasShortCmap
        };
      }
      function sanitizeMetrics(font, header, metrics, numGlyphs) {
        if (!header) {
          if (metrics) {
            metrics.data = null;
          }
          return;
        }
        font.pos = (font.start ? font.start : 0) + header.offset;
        font.pos += header.length - 2;
        var numOfMetrics = font.getUint16();
        if (numOfMetrics > numGlyphs) {
          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;
        }
        var numOfSidebearings = numGlyphs - numOfMetrics;
        var numMissing = numOfSidebearings - (metrics.length - numOfMetrics * 4 >> 1);
        if (numMissing > 0) {
          var entries = new Uint8Array(metrics.length + numMissing * 2);
          entries.set(metrics.data);
          metrics.data = entries;
        }
      }
      function sanitizeGlyph(source, sourceStart, sourceEnd, dest, destStart, hintsValid) {
        if (sourceEnd - sourceStart <= 12) {
          return 0;
        }
        var glyf = source.subarray(sourceStart, sourceEnd);
        var contoursCount = glyf[0] << 8 | glyf[1];
        if (contoursCount & 0x8000) {
          dest.set(glyf, destStart);
          return glyf.length;
        }
        var i,
            j = 10,
            flagsCount = 0;
        for (i = 0; i < contoursCount; i++) {
          var endPoint = glyf[j] << 8 | glyf[j + 1];
          flagsCount = endPoint + 1;
          j += 2;
        }
        var instructionsStart = j;
        var instructionsLength = glyf[j] << 8 | glyf[j + 1];
        j += 2 + instructionsLength;
        var instructionsEnd = j;
        var coordinatesLength = 0;
        for (i = 0; i < flagsCount; i++) {
          var flag = glyf[j++];
          if (flag & 0xC0) {
            glyf[j - 1] = flag & 0x3F;
          }
          var xyLength = (flag & 2 ? 1 : flag & 16 ? 0 : 2) + (flag & 4 ? 1 : flag & 32 ? 0 : 2);
          coordinatesLength += xyLength;
          if (flag & 8) {
            var repeat = glyf[j++];
            i += repeat;
            coordinatesLength += repeat * xyLength;
          }
        }
        if (coordinatesLength === 0) {
          return 0;
        }
        var glyphDataLength = j + coordinatesLength;
        if (glyphDataLength > glyf.length) {
          return 0;
        }
        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;
          }
          return glyphDataLength;
        }
        if (glyf.length - glyphDataLength > 3) {
          glyphDataLength = glyphDataLength + 3 & ~3;
          dest.set(glyf.subarray(0, glyphDataLength), destStart);
          return glyphDataLength;
        }
        dest.set(glyf, destStart);
        return glyf.length;
      }
      function sanitizeHead(head, numGlyphs, locaLength) {
        var data = head.data;
        var version = int32(data[0], data[1], data[2], data[3]);
        if (version >> 16 !== 1) {
          info('Attempting to fix invalid version in head table: ' + version);
          data[0] = 0;
          data[1] = 1;
          data[2] = 0;
          data[3] = 0;
        }
        var indexToLocFormat = int16(data[50], data[51]);
        if (indexToLocFormat < 0 || indexToLocFormat > 1) {
          info('Attempting to fix invalid indexToLocFormat in head table: ' + indexToLocFormat);
          var 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 {
            warn('Could not fix indexToLocFormat: ' + indexToLocFormat);
          }
        }
      }
      function sanitizeGlyphLocations(loca, glyf, numGlyphs, isGlyphLocationsLong, hintsValid, dupFirstEntry) {
        var 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;
          };
        }
        var locaData = loca.data;
        var locaDataSize = itemSize * (1 + numGlyphs);
        if (locaData.length !== locaDataSize) {
          locaData = new Uint8Array(locaDataSize);
          locaData.set(loca.data.subarray(0, locaDataSize));
          loca.data = locaData;
        }
        var oldGlyfData = glyf.data;
        var oldGlyfDataLength = oldGlyfData.length;
        var newGlyfData = new Uint8Array(oldGlyfDataLength);
        var startOffset = itemDecode(locaData, 0);
        var writeOffset = 0;
        var missingGlyphData = Object.create(null);
        itemEncode(locaData, 0, writeOffset);
        var i, j;
        for (i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) {
          var endOffset = itemDecode(locaData, j);
          if (endOffset > oldGlyfDataLength && (oldGlyfDataLength + 3 & ~3) === endOffset) {
            endOffset = oldGlyfDataLength;
          }
          if (endOffset > oldGlyfDataLength) {
            itemEncode(locaData, j, writeOffset);
            startOffset = endOffset;
            continue;
          }
          if (startOffset === endOffset) {
            missingGlyphData[i] = true;
          }
          var newLength = sanitizeGlyph(oldGlyfData, startOffset, endOffset, newGlyfData, writeOffset, hintsValid);
          writeOffset += newLength;
          itemEncode(locaData, j, writeOffset);
          startOffset = endOffset;
        }
        if (writeOffset === 0) {
          var 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 < numGlyphs; i++, j += itemSize) {
            itemEncode(locaData, j, simpleGlyph.length);
          }
          glyf.data = simpleGlyph;
          return missingGlyphData;
        }
        if (dupFirstEntry) {
          var 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 missingGlyphData;
      }
      function readPostScriptTable(post, properties, maxpNumGlyphs) {
        var start = (font.start ? font.start : 0) + post.offset;
        font.pos = start;
        var length = post.length,
            end = start + length;
        var version = font.getInt32();
        font.getBytes(28);
        var glyphNames;
        var valid = true;
        var i;
        switch (version) {
          case 0x00010000:
            glyphNames = MacStandardGlyphOrdering;
            break;
          case 0x00020000:
            var numGlyphs = font.getUint16();
            if (numGlyphs !== maxpNumGlyphs) {
              valid = false;
              break;
            }
            var glyphNameIndexes = [];
            for (i = 0; i < numGlyphs; ++i) {
              var index = font.getUint16();
              if (index >= 32768) {
                valid = false;
                break;
              }
              glyphNameIndexes.push(index);
            }
            if (!valid) {
              break;
            }
            var customNames = [];
            var strBuf = [];
            while (font.pos < end) {
              var 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) {
              var j = glyphNameIndexes[i];
              if (j < 258) {
                glyphNames.push(MacStandardGlyphOrdering[j]);
                continue;
              }
              glyphNames.push(customNames[j - 258]);
            }
            break;
          case 0x00030000:
            break;
          default:
            warn('Unknown/unsupported post table version ' + version);
            valid = false;
            if (properties.defaultEncoding) {
              glyphNames = properties.defaultEncoding;
            }
            break;
        }
        properties.glyphNames = glyphNames;
        return valid;
      }
      function readNameTable(nameTable) {
        var start = (font.start ? font.start : 0) + nameTable.offset;
        font.pos = start;
        var names = [[], []];
        var length = nameTable.length,
            end = start + length;
        var format = font.getUint16();
        var FORMAT_0_HEADER_LENGTH = 6;
        if (format !== 0 || length < FORMAT_0_HEADER_LENGTH) {
          return names;
        }
        var numRecords = font.getUint16();
        var stringsStart = font.getUint16();
        var records = [];
        var NAME_RECORD_LENGTH = 12;
        var i, ii;
        for (i = 0; i < numRecords && font.pos + NAME_RECORD_LENGTH <= end; i++) {
          var 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++) {
          var record = records[i];
          if (record.length <= 0) {
            continue;
          }
          var pos = start + stringsStart + record.offset;
          if (pos + record.length > end) {
            continue;
          }
          font.pos = pos;
          var nameIndex = record.name;
          if (record.encoding) {
            var str = '';
            for (var j = 0, jj = record.length; j < jj; j += 2) {
              str += String.fromCharCode(font.getUint16());
            }
            names[1][nameIndex] = str;
          } else {
            names[0][nameIndex] = bytesToString(font.getBytes(record.length));
          }
        }
        return names;
      }
      var 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) {
        var data = table.data;
        var i = 0,
            j,
            n,
            b,
            funcId,
            pc,
            lastEndf = 0,
            lastDeff = 0;
        var stack = [];
        var callstack = [];
        var functionsCalled = [];
        var tooComplexToFollowFunctions = ttContext.tooComplexToFollowFunctions;
        var inFDEF = false,
            ifLevel = 0,
            inELSE = 0;
        for (var ii = data.length; i < ii;) {
          var 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[stack.length - 1];
              ttContext.functionsUsed[funcId] = true;
              if (funcId in ttContext.functionsStackDeltas) {
                stack.length += ttContext.functionsStackDeltas[funcId];
              } else if (funcId in ttContext.functionsDefined && functionsCalled.indexOf(funcId) < 0) {
                callstack.push({
                  data: data,
                  i: i,
                  stackTop: stack.length - 1
                });
                functionsCalled.push(funcId);
                pc = ttContext.functionsDefined[funcId];
                if (!pc) {
                  warn('TT: CALL non-existent function');
                  ttContext.hintsValid = false;
                  return;
                }
                data = pc.data;
                i = pc.i;
              }
            }
          } else if (op === 0x2C && !tooComplexToFollowFunctions) {
            if (inFDEF || inELSE) {
              warn('TT: nested FDEFs not allowed');
              tooComplexToFollowFunctions = true;
            }
            inFDEF = true;
            lastDeff = i;
            funcId = stack.pop();
            ttContext.functionsDefined[funcId] = {
              data: data,
              i: i
            };
          } else if (op === 0x2D) {
            if (inFDEF) {
              inFDEF = false;
              lastEndf = i;
            } else {
              pc = callstack.pop();
              if (!pc) {
                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) {
              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) {
              var offset = stack[stack.length - 1];
              if (offset > 0) {
                i += offset - 1;
              }
            }
          }
          if (!inFDEF && !inELSE) {
            var stackDelta = op <= 0x8E ? TTOpsStackDeltas[op] : op >= 0xC0 && op <= 0xDF ? -1 : op >= 0xE0 ? -2 : 0;
            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;
        var content = [data];
        if (i > data.length) {
          content.push(new Uint8Array(i - data.length));
        }
        if (lastDeff > lastEndf) {
          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) {
          warn('TT: more functions defined than expected');
          ttContext.hintsValid = false;
          return;
        }
        for (var j = 0, jj = ttContext.functionsUsed.length; j < jj; j++) {
          if (j > maxFunctionDefs) {
            warn('TT: invalid function id: ' + j);
            ttContext.hintsValid = false;
            return;
          }
          if (ttContext.functionsUsed[j] && !ttContext.functionsDefined[j]) {
            warn('TT: undefined function: ' + j);
            ttContext.hintsValid = false;
            return;
          }
        }
      }
      function foldTTTable(table, content) {
        if (content.length > 1) {
          var newLength = 0;
          var j, jj;
          for (j = 0, jj = content.length; j < jj; j++) {
            newLength += content[j].length;
          }
          newLength = newLength + 3 & ~3;
          var result = new Uint8Array(newLength);
          var 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) {
        var 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) {
          var cvtData = new Uint8Array(cvt.length + 1);
          cvtData.set(cvt.data);
          cvt.data = cvtData;
        }
        return ttContext.hintsValid;
      }
      font = new Stream(new Uint8Array(font.getBytes()));
      var VALID_TABLES = ['OS/2', 'cmap', 'head', 'hhea', 'hmtx', 'maxp', 'name', 'post', 'loca', 'glyf', 'fpgm', 'prep', 'cvt ', 'CFF '];
      var header = readOpenTypeHeader(font);
      var numTables = header.numTables;
      var cff, cffFile;
      var 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;
      var table;
      for (var i = 0; i < numTables; i++) {
        table = readTableEntry(font);
        if (VALID_TABLES.indexOf(table.tag) < 0) {
          continue;
        }
        if (table.length === 0) {
          continue;
        }
        tables[table.tag] = table;
      }
      var isTrueType = !tables['CFF '];
      if (!isTrueType) {
        if (header.version === 'OTTO' && !properties.composite || !tables['head'] || !tables['hhea'] || !tables['maxp'] || !tables['post']) {
          cffFile = new Stream(tables['CFF '].data);
          cff = new 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']) {
          error('Required "loca" table is not found');
        }
        if (!tables['glyf']) {
          warn('Required "glyf" table is not found -- trying to recover.');
          tables['glyf'] = {
            tag: 'glyf',
            data: new Uint8Array(0)
          };
        }
        this.isOpenType = false;
      }
      if (!tables['maxp']) {
        error('Required "maxp" table is not found');
      }
      font.pos = (font.start || 0) + tables['maxp'].offset;
      var version = font.getInt32();
      var numGlyphs = font.getUint16();
      var maxFunctionDefs = 0;
      if (version >= 0x00010000 && tables['maxp'].length >= 22) {
        font.pos += 8;
        var maxZones = font.getUint16();
        if (maxZones > 2) {
          tables['maxp'].data[14] = 0;
          tables['maxp'].data[15] = 2;
        }
        font.pos += 4;
        maxFunctionDefs = font.getUint16();
      }
      var dupFirstEntry = false;
      if (properties.type === 'CIDFontType2' && properties.toUnicode && properties.toUnicode.get(0) > '\0') {
        dupFirstEntry = true;
        numGlyphs++;
        tables['maxp'].data[4] = numGlyphs >> 8;
        tables['maxp'].data[5] = numGlyphs & 255;
      }
      var 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'], numGlyphs);
      if (!tables['head']) {
        error('Required "head" table is not found');
      }
      sanitizeHead(tables['head'], numGlyphs, isTrueType ? tables['loca'].length : 0);
      var missingGlyphs = Object.create(null);
      if (isTrueType) {
        var isGlyphLocationsLong = int16(tables['head'].data[50], tables['head'].data[51]);
        missingGlyphs = sanitizeGlyphLocations(tables['loca'], tables['glyf'], numGlyphs, isGlyphLocationsLong, hintsValid, dupFirstEntry);
      }
      if (!tables['hhea']) {
        error('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;
      }
      var 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: int16(tables['hhea'].data[4], tables['hhea'].data[5]),
        descent: signedInt16(tables['hhea'].data[6], tables['hhea'].data[7])
      };
      this.ascent = metricsOverride.ascent / metricsOverride.unitsPerEm;
      this.descent = metricsOverride.descent / metricsOverride.unitsPerEm;
      if (tables['post']) {
        var valid = readPostScriptTable(tables['post'], properties, numGlyphs);
        if (!valid) {
          tables['post'] = null;
        }
      }
      var charCodeToGlyphId = [],
          charCode;
      var toUnicode = properties.toUnicode,
          widths = properties.widths;
      var skipToUnicode = toUnicode instanceof IdentityToUnicodeMap || toUnicode.length === 0x10000;
      function hasGlyph(glyphId, charCode, widthCode) {
        if (!missingGlyphs[glyphId]) {
          return true;
        }
        if (!skipToUnicode && charCode >= 0 && toUnicode.has(charCode)) {
          return true;
        }
        if (widths && widthCode >= 0 && isNum(widths[widthCode])) {
          return true;
        }
        return false;
      }
      if (properties.composite) {
        var cidToGidMap = properties.cidToGidMap || [];
        var isCidToGidMapEmpty = cidToGidMap.length === 0;
        properties.cMap.forEach(function (charCode, cid) {
          assert(cid <= 0xffff, 'Max size of CID is 65,535');
          var glyphId = -1;
          if (isCidToGidMapEmpty) {
            glyphId = cid;
          } else if (cidToGidMap[cid] !== undefined) {
            glyphId = cidToGidMap[cid];
          }
          if (glyphId >= 0 && glyphId < numGlyphs && hasGlyph(glyphId, charCode, cid)) {
            charCodeToGlyphId[charCode] = glyphId;
          }
        });
        if (dupFirstEntry && (isCidToGidMapEmpty || !charCodeToGlyphId[0])) {
          charCodeToGlyphId[0] = numGlyphs - 1;
        }
      } else {
        var cmapTable = readCmapTable(tables['cmap'], font, this.isSymbolicFont, properties.hasEncoding);
        var cmapPlatformId = cmapTable.platformId;
        var cmapEncodingId = cmapTable.encodingId;
        var cmapMappings = cmapTable.mappings;
        var cmapMappingsLength = cmapMappings.length;
        if (properties.hasEncoding && (cmapPlatformId === 3 && cmapEncodingId === 1 || cmapPlatformId === 1 && cmapEncodingId === 0) || cmapPlatformId === -1 && cmapEncodingId === -1 && !!getEncoding(properties.baseEncodingName)) {
          var baseEncoding = [];
          if (properties.baseEncodingName === 'MacRomanEncoding' || properties.baseEncodingName === 'WinAnsiEncoding') {
            baseEncoding = getEncoding(properties.baseEncodingName);
          }
          var glyphsUnicodeMap = getGlyphsUnicode();
          for (charCode = 0; charCode < 256; charCode++) {
            var glyphName, standardGlyphName;
            if (this.differences && charCode in this.differences) {
              glyphName = this.differences[charCode];
            } else if (charCode in baseEncoding && baseEncoding[charCode] !== '') {
              glyphName = baseEncoding[charCode];
            } else {
              glyphName = StandardEncoding[charCode];
            }
            if (!glyphName) {
              continue;
            }
            standardGlyphName = recoverGlyphName(glyphName, glyphsUnicodeMap);
            var unicodeOrCharCode,
                isUnicode = false;
            if (cmapPlatformId === 3 && cmapEncodingId === 1) {
              unicodeOrCharCode = glyphsUnicodeMap[standardGlyphName];
              isUnicode = true;
            } else if (cmapPlatformId === 1 && cmapEncodingId === 0) {
              unicodeOrCharCode = MacRomanEncoding.indexOf(standardGlyphName);
            }
            var found = false;
            for (i = 0; i < cmapMappingsLength; ++i) {
              if (cmapMappings[i].charCode !== unicodeOrCharCode) {
                continue;
              }
              var code = isUnicode ? charCode : unicodeOrCharCode;
              if (hasGlyph(cmapMappings[i].glyphId, code, -1)) {
                charCodeToGlyphId[charCode] = cmapMappings[i].glyphId;
                found = true;
                break;
              }
            }
            if (!found && properties.glyphNames) {
              var glyphId = properties.glyphNames.indexOf(glyphName);
              if (glyphId === -1 && standardGlyphName !== glyphName) {
                glyphId = properties.glyphNames.indexOf(standardGlyphName);
              }
              if (glyphId > 0 && hasGlyph(glyphId, -1, -1)) {
                charCodeToGlyphId[charCode] = glyphId;
                found = true;
              }
            }
            if (!found) {
              charCodeToGlyphId[charCode] = 0;
            }
          }
        } else if (cmapPlatformId === 0 && cmapEncodingId === 0) {
          for (i = 0; i < cmapMappingsLength; ++i) {
            charCodeToGlyphId[cmapMappings[i].charCode] = cmapMappings[i].glyphId;
          }
        } else {
          for (i = 0; i < cmapMappingsLength; ++i) {
            charCode = cmapMappings[i].charCode & 0xFF;
            charCodeToGlyphId[charCode] = cmapMappings[i].glyphId;
          }
        }
      }
      if (charCodeToGlyphId.length === 0) {
        charCodeToGlyphId[0] = 0;
      }
      var newMapping = adjustMapping(charCodeToGlyphId, properties);
      this.toFontChar = newMapping.toFontChar;
      tables['cmap'] = {
        tag: 'cmap',
        data: createCmapTable(newMapping.charCodeToGlyphId, numGlyphs)
      };
      if (!tables['OS/2'] || !validateOS2Table(tables['OS/2'])) {
        tables['OS/2'] = {
          tag: 'OS/2',
          data: createOS2Table(properties, newMapping.charCodeToGlyphId, metricsOverride)
        };
      }
      if (!tables['post']) {
        tables['post'] = {
          tag: 'post',
          data: createPostTable(properties)
        };
      }
      if (!isTrueType) {
        try {
          cffFile = new Stream(tables['CFF '].data);
          var parser = new CFFParser(cffFile, properties, SEAC_ANALYSIS_ENABLED);
          cff = parser.parse();
          var compiler = new CFFCompiler(cff);
          tables['CFF '].data = compiler.compile();
        } catch (e) {
          warn('Failed to compile font ' + properties.loadedName);
        }
      }
      if (!tables['name']) {
        tables['name'] = {
          tag: 'name',
          data: createNameTable(this.name)
        };
      } else {
        var namePrototype = readNameTable(tables['name']);
        tables['name'].data = createNameTable(name, namePrototype);
      }
      var builder = new OpenTypeFileBuilder(header.version);
      for (var tableTag in tables) {
        builder.addTable(tableTag, tables[tableTag].data);
      }
      return builder.toArray();
    },
    convert: function Font_convert(fontName, font, properties) {
      properties.fixedPitch = false;
      if (properties.builtInEncoding) {
        adjustToUnicode(properties, properties.builtInEncoding);
      }
      var mapping = font.getGlyphMapping(properties);
      var newMapping = adjustMapping(mapping, properties);
      this.toFontChar = newMapping.toFontChar;
      var numGlyphs = font.numGlyphs;
      function getCharCodes(charCodeToGlyphId, glyphId) {
        var charCodes = null;
        for (var charCode in charCodeToGlyphId) {
          if (glyphId === charCodeToGlyphId[charCode]) {
            if (!charCodes) {
              charCodes = [];
            }
            charCodes.push(charCode | 0);
          }
        }
        return charCodes;
      }
      function createCharCode(charCodeToGlyphId, glyphId) {
        for (var charCode in charCodeToGlyphId) {
          if (glyphId === charCodeToGlyphId[charCode]) {
            return charCode | 0;
          }
        }
        newMapping.charCodeToGlyphId[newMapping.nextAvailableFontCharCode] = glyphId;
        return newMapping.nextAvailableFontCharCode++;
      }
      var seacs = font.seacs;
      if (SEAC_ANALYSIS_ENABLED && seacs && seacs.length) {
        var matrix = properties.fontMatrix || FONT_IDENTITY_MATRIX;
        var charset = font.getCharset();
        var seacMap = Object.create(null);
        for (var glyphId in seacs) {
          glyphId |= 0;
          var seac = seacs[glyphId];
          var baseGlyphName = StandardEncoding[seac[2]];
          var accentGlyphName = StandardEncoding[seac[3]];
          var baseGlyphId = charset.indexOf(baseGlyphName);
          var accentGlyphId = charset.indexOf(accentGlyphName);
          if (baseGlyphId < 0 || accentGlyphId < 0) {
            continue;
          }
          var accentOffset = {
            x: seac[0] * matrix[0] + seac[1] * matrix[2] + matrix[4],
            y: seac[0] * matrix[1] + seac[1] * matrix[3] + matrix[5]
          };
          var charCodes = getCharCodes(mapping, glyphId);
          if (!charCodes) {
            continue;
          }
          for (var i = 0, ii = charCodes.length; i < ii; i++) {
            var charCode = charCodes[i];
            var charCodeToGlyphId = newMapping.charCodeToGlyphId;
            var baseFontCharCode = createCharCode(charCodeToGlyphId, baseGlyphId);
            var accentFontCharCode = createCharCode(charCodeToGlyphId, accentGlyphId);
            seacMap[charCode] = {
              baseFontCharCode: baseFontCharCode,
              accentFontCharCode: accentFontCharCode,
              accentOffset: accentOffset
            };
          }
        }
        properties.seacMap = seacMap;
      }
      var unitsPerEm = 1 / (properties.fontMatrix || FONT_IDENTITY_MATRIX)[0];
      var builder = new OpenTypeFileBuilder('\x4F\x54\x54\x4F');
      builder.addTable('CFF ', font.data);
      builder.addTable('OS/2', createOS2Table(properties, newMapping.charCodeToGlyphId));
      builder.addTable('cmap', createCmapTable(newMapping.charCodeToGlyphId, 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() {
        var charstrings = font.charstrings;
        var cffWidths = font.cff ? font.cff.widths : null;
        var hmtx = '\x00\x00\x00\x00';
        for (var i = 1, ii = numGlyphs; i < ii; i++) {
          var width = 0;
          if (charstrings) {
            var 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() {
      if ('_shadowWidth' in this) {
        return this._shadowWidth;
      }
      var possibleSpaceReplacements = ['space', 'minus', 'one', 'i', 'I'];
      var width;
      for (var i = 0, ii = possibleSpaceReplacements.length; i < ii; i++) {
        var glyphName = possibleSpaceReplacements[i];
        if (glyphName in this.widths) {
          width = this.widths[glyphName];
          break;
        }
        var glyphsUnicodeMap = getGlyphsUnicode();
        var glyphUnicode = glyphsUnicodeMap[glyphName];
        var charcode = 0;
        if (this.composite) {
          if (this.cMap.contains(glyphUnicode)) {
            charcode = this.cMap.lookup(glyphUnicode);
          }
        }
        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;
      this._shadowWidth = width;
      return width;
    },
    charToGlyph: function Font_charToGlyph(charcode, isSpace) {
      var fontCharCode, width, operatorListId;
      var widthCode = charcode;
      if (this.cMap && this.cMap.contains(charcode)) {
        widthCode = this.cMap.lookup(charcode);
      }
      width = this.widths[widthCode];
      width = isNum(width) ? width : this.defaultWidth;
      var vmetric = this.vmetrics && this.vmetrics[widthCode];
      var unicode = this.toUnicode.get(charcode) || charcode;
      if (typeof unicode === 'number') {
        unicode = String.fromCharCode(unicode);
      }
      var isInFont = charcode in this.toFontChar;
      fontCharCode = this.toFontChar[charcode] || charcode;
      if (this.missingFile) {
        fontCharCode = mapSpecialUnicodeValues(fontCharCode);
      }
      if (this.isType3Font) {
        operatorListId = fontCharCode;
      }
      var accent = null;
      if (this.seacMap && this.seacMap[charcode]) {
        isInFont = true;
        var seac = this.seacMap[charcode];
        fontCharCode = seac.baseFontCharCode;
        accent = {
          fontChar: String.fromCharCode(seac.accentFontCharCode),
          offset: seac.accentOffset
        };
      }
      var fontChar = String.fromCharCode(fontCharCode);
      var glyph = this.glyphCache[charcode];
      if (!glyph || !glyph.matchesForCache(fontChar, unicode, accent, width, vmetric, operatorListId, isSpace, isInFont)) {
        glyph = new Glyph(fontChar, unicode, accent, width, vmetric, operatorListId, isSpace, isInFont);
        this.glyphCache[charcode] = glyph;
      }
      return glyph;
    },
    charsToGlyphs: function Font_charsToGlyphs(chars) {
      var charsCache = this.charsCache;
      var glyphs, glyph, charcode;
      if (charsCache) {
        glyphs = charsCache[chars];
        if (glyphs) {
          return glyphs;
        }
      }
      if (!charsCache) {
        charsCache = this.charsCache = Object.create(null);
      }
      glyphs = [];
      var charsCacheKey = chars;
      var i = 0,
          ii;
      if (this.cMap) {
        var c = Object.create(null);
        while (i < chars.length) {
          this.cMap.readCharCode(chars, i, c);
          charcode = c.charcode;
          var length = c.length;
          i += length;
          var isSpace = length === 1 && chars.charCodeAt(i - 1) === 0x20;
          glyph = this.charToGlyph(charcode, isSpace);
          glyphs.push(glyph);
        }
      } else {
        for (i = 0, ii = chars.length; i < ii; ++i) {
          charcode = chars.charCodeAt(i);
          glyph = this.charToGlyph(charcode, charcode === 0x20);
          glyphs.push(glyph);
        }
      }
      return charsCache[charsCacheKey] = glyphs;
    }
  };
  return Font;
}();
var ErrorFont = function ErrorFontClosure() {
  function ErrorFont(error) {
    this.error = error;
    this.loadedName = 'g_font_error';
    this.loading = false;
  }
  ErrorFont.prototype = {
    charsToGlyphs: function ErrorFont_charsToGlyphs() {
      return [];
    },
    exportData: function ErrorFont_exportData() {
      return { error: this.error };
    }
  };
  return ErrorFont;
}();
function type1FontGlyphMapping(properties, builtInEncoding, glyphNames) {
  var charCodeToGlyphId = Object.create(null);
  var glyphId, charCode, baseEncoding;
  var isSymbolicFont = !!(properties.flags & FontFlags.Symbolic);
  if (properties.baseEncodingName) {
    baseEncoding = getEncoding(properties.baseEncodingName);
    for (charCode = 0; charCode < baseEncoding.length; charCode++) {
      glyphId = glyphNames.indexOf(baseEncoding[charCode]);
      if (glyphId >= 0) {
        charCodeToGlyphId[charCode] = glyphId;
      } else {
        charCodeToGlyphId[charCode] = 0;
      }
    }
  } else if (isSymbolicFont) {
    for (charCode in builtInEncoding) {
      charCodeToGlyphId[charCode] = builtInEncoding[charCode];
    }
  } else {
    baseEncoding = StandardEncoding;
    for (charCode = 0; charCode < baseEncoding.length; charCode++) {
      glyphId = glyphNames.indexOf(baseEncoding[charCode]);
      if (glyphId >= 0) {
        charCodeToGlyphId[charCode] = glyphId;
      } else {
        charCodeToGlyphId[charCode] = 0;
      }
    }
  }
  var differences = properties.differences,
      glyphsUnicodeMap;
  if (differences) {
    for (charCode in differences) {
      var glyphName = differences[charCode];
      glyphId = glyphNames.indexOf(glyphName);
      if (glyphId === -1) {
        if (!glyphsUnicodeMap) {
          glyphsUnicodeMap = getGlyphsUnicode();
        }
        var standardGlyphName = recoverGlyphName(glyphName, glyphsUnicodeMap);
        if (standardGlyphName !== glyphName) {
          glyphId = glyphNames.indexOf(standardGlyphName);
        }
      }
      if (glyphId >= 0) {
        charCodeToGlyphId[charCode] = glyphId;
      } else {
        charCodeToGlyphId[charCode] = 0;
      }
    }
  }
  return charCodeToGlyphId;
}
var Type1Font = function Type1FontClosure() {
  function findBlock(streamBytes, signature, startIndex) {
    var streamBytesLength = streamBytes.length;
    var signatureLength = signature.length;
    var scanLength = streamBytesLength - signatureLength;
    var i = startIndex,
        j,
        found = false;
    while (i < scanLength) {
      j = 0;
      while (j < signatureLength && streamBytes[i + j] === signature[j]) {
        j++;
      }
      if (j >= signatureLength) {
        i += j;
        while (i < streamBytesLength && isSpace(streamBytes[i])) {
          i++;
        }
        found = true;
        break;
      }
      i++;
    }
    return {
      found: found,
      length: i
    };
  }
  function getHeaderBlock(stream, suggestedLength) {
    var EEXEC_SIGNATURE = [0x65, 0x65, 0x78, 0x65, 0x63];
    var streamStartPos = stream.pos;
    var headerBytes, headerBytesLength, block;
    try {
      headerBytes = stream.getBytes(suggestedLength);
      headerBytesLength = headerBytes.length;
    } catch (ex) {
      if (ex instanceof MissingDataException) {
        throw ex;
      }
    }
    if (headerBytesLength === suggestedLength) {
      block = findBlock(headerBytes, EEXEC_SIGNATURE, suggestedLength - 2 * EEXEC_SIGNATURE.length);
      if (block.found && block.length === suggestedLength) {
        return {
          stream: new Stream(headerBytes),
          length: suggestedLength
        };
      }
    }
    warn('Invalid "Length1" property in Type1 font -- trying to recover.');
    stream.pos = streamStartPos;
    var SCAN_BLOCK_LENGTH = 2048;
    var actualLength;
    while (true) {
      var scanBytes = stream.peekBytes(SCAN_BLOCK_LENGTH);
      block = findBlock(scanBytes, EEXEC_SIGNATURE, 0);
      if (block.length === 0) {
        break;
      }
      stream.pos += block.length;
      if (block.found) {
        actualLength = stream.pos - streamStartPos;
        break;
      }
    }
    stream.pos = streamStartPos;
    if (actualLength) {
      return {
        stream: new Stream(stream.getBytes(actualLength)),
        length: actualLength
      };
    }
    warn('Unable to recover "Length1" property in Type1 font -- using as is.');
    return {
      stream: new Stream(stream.getBytes(suggestedLength)),
      length: suggestedLength
    };
  }
  function getEexecBlock(stream, suggestedLength) {
    var eexecBytes = stream.getBytes();
    return {
      stream: new Stream(eexecBytes),
      length: eexecBytes.length
    };
  }
  function Type1Font(name, file, properties) {
    var PFB_HEADER_SIZE = 6;
    var headerBlockLength = properties.length1;
    var eexecBlockLength = properties.length2;
    var pfbHeader = file.peekBytes(PFB_HEADER_SIZE);
    var pfbHeaderPresent = pfbHeader[0] === 0x80 && pfbHeader[1] === 0x01;
    if (pfbHeaderPresent) {
      file.skip(PFB_HEADER_SIZE);
      headerBlockLength = pfbHeader[5] << 24 | pfbHeader[4] << 16 | pfbHeader[3] << 8 | pfbHeader[2];
    }
    var headerBlock = getHeaderBlock(file, headerBlockLength);
    headerBlockLength = headerBlock.length;
    var headerBlockParser = new Type1Parser(headerBlock.stream, false, SEAC_ANALYSIS_ENABLED);
    headerBlockParser.extractFontHeader(properties);
    if (pfbHeaderPresent) {
      pfbHeader = file.getBytes(PFB_HEADER_SIZE);
      eexecBlockLength = pfbHeader[5] << 24 | pfbHeader[4] << 16 | pfbHeader[3] << 8 | pfbHeader[2];
    }
    var eexecBlock = getEexecBlock(file, eexecBlockLength);
    eexecBlockLength = eexecBlock.length;
    var eexecBlockParser = new Type1Parser(eexecBlock.stream, true, SEAC_ANALYSIS_ENABLED);
    var data = eexecBlockParser.extractFontProgram();
    for (var info in data.properties) {
      properties[info] = data.properties[info];
    }
    var charstrings = data.charstrings;
    var type2Charstrings = this.getType2Charstrings(charstrings);
    var subrs = this.getType2Subrs(data.subrs);
    this.charstrings = charstrings;
    this.data = this.wrap(name, type2Charstrings, this.charstrings, subrs, properties);
    this.seacs = this.getSeacs(data.charstrings);
  }
  Type1Font.prototype = {
    get numGlyphs() {
      return this.charstrings.length + 1;
    },
    getCharset: function Type1Font_getCharset() {
      var charset = ['.notdef'];
      var charstrings = this.charstrings;
      for (var glyphId = 0; glyphId < charstrings.length; glyphId++) {
        charset.push(charstrings[glyphId].glyphName);
      }
      return charset;
    },
    getGlyphMapping: function Type1Font_getGlyphMapping(properties) {
      var charstrings = this.charstrings;
      var glyphNames = ['.notdef'],
          glyphId;
      for (glyphId = 0; glyphId < charstrings.length; glyphId++) {
        glyphNames.push(charstrings[glyphId].glyphName);
      }
      var encoding = properties.builtInEncoding;
      if (encoding) {
        var builtInEncoding = Object.create(null);
        for (var charCode in encoding) {
          glyphId = glyphNames.indexOf(encoding[charCode]);
          if (glyphId >= 0) {
            builtInEncoding[charCode] = glyphId;
          }
        }
      }
      return type1FontGlyphMapping(properties, builtInEncoding, glyphNames);
    },
    getSeacs: function Type1Font_getSeacs(charstrings) {
      var i, ii;
      var seacMap = [];
      for (i = 0, ii = charstrings.length; i < ii; i++) {
        var charstring = charstrings[i];
        if (charstring.seac) {
          seacMap[i + 1] = charstring.seac;
        }
      }
      return seacMap;
    },
    getType2Charstrings: function Type1Font_getType2Charstrings(type1Charstrings) {
      var type2Charstrings = [];
      for (var i = 0, ii = type1Charstrings.length; i < ii; i++) {
        type2Charstrings.push(type1Charstrings[i].charstring);
      }
      return type2Charstrings;
    },
    getType2Subrs: function Type1Font_getType2Subrs(type1Subrs) {
      var bias = 0;
      var count = type1Subrs.length;
      if (count < 1133) {
        bias = 107;
      } else if (count < 33769) {
        bias = 1131;
      } else {
        bias = 32768;
      }
      var type2Subrs = [];
      var i;
      for (i = 0; i < bias; i++) {
        type2Subrs.push([0x0B]);
      }
      for (i = 0; i < count; i++) {
        type2Subrs.push(type1Subrs[i]);
      }
      return type2Subrs;
    },
    wrap: function Type1Font_wrap(name, glyphs, charstrings, subrs, properties) {
      var cff = new CFF();
      cff.header = new CFFHeader(1, 0, 4, 4);
      cff.names = [name];
      var topDict = new CFFTopDict();
      topDict.setByName('version', 391);
      topDict.setByName('Notice', 392);
      topDict.setByName('FullName', 393);
      topDict.setByName('FamilyName', 394);
      topDict.setByName('Weight', 395);
      topDict.setByName('Encoding', null);
      topDict.setByName('FontMatrix', properties.fontMatrix);
      topDict.setByName('FontBBox', properties.bbox);
      topDict.setByName('charset', null);
      topDict.setByName('CharStrings', null);
      topDict.setByName('Private', null);
      cff.topDict = topDict;
      var strings = new CFFStrings();
      strings.add('Version 0.11');
      strings.add('See original notice');
      strings.add(name);
      strings.add(name);
      strings.add('Medium');
      cff.strings = strings;
      cff.globalSubrIndex = new CFFIndex();
      var count = glyphs.length;
      var charsetArray = [0];
      var i, ii;
      for (i = 0; i < count; i++) {
        var index = CFFStandardStrings.indexOf(charstrings[i].glyphName);
        if (index === -1) {
          index = 0;
        }
        charsetArray.push(index >> 8 & 0xff, index & 0xff);
      }
      cff.charset = new CFFCharset(false, 0, [], charsetArray);
      var charStringsIndex = new CFFIndex();
      charStringsIndex.add([0x8B, 0x0E]);
      for (i = 0; i < count; i++) {
        var glyph = glyphs[i];
        if (glyph.length === 0) {
          charStringsIndex.add([0x8B, 0x0E]);
          continue;
        }
        charStringsIndex.add(glyph);
      }
      cff.charStrings = charStringsIndex;
      var privateDict = new CFFPrivateDict();
      privateDict.setByName('Subrs', null);
      var fields = ['BlueValues', 'OtherBlues', 'FamilyBlues', 'FamilyOtherBlues', 'StemSnapH', 'StemSnapV', 'BlueShift', 'BlueFuzz', 'BlueScale', 'LanguageGroup', 'ExpansionFactor', 'ForceBold', 'StdHW', 'StdVW'];
      for (i = 0, ii = fields.length; i < ii; i++) {
        var field = fields[i];
        if (!(field in properties.privateData)) {
          continue;
        }
        var value = properties.privateData[field];
        if (isArray(value)) {
          for (var j = value.length - 1; j > 0; j--) {
            value[j] -= value[j - 1];
          }
        }
        privateDict.setByName(field, value);
      }
      cff.topDict.privateDict = privateDict;
      var subrIndex = new CFFIndex();
      for (i = 0, ii = subrs.length; i < ii; i++) {
        subrIndex.add(subrs[i]);
      }
      privateDict.subrsIndex = subrIndex;
      var compiler = new CFFCompiler(cff);
      return compiler.compile();
    }
  };
  return Type1Font;
}();
var CFFFont = function CFFFontClosure() {
  function CFFFont(file, properties) {
    this.properties = properties;
    var parser = new CFFParser(file, properties, SEAC_ANALYSIS_ENABLED);
    this.cff = parser.parse();
    var compiler = new CFFCompiler(this.cff);
    this.seacs = this.cff.seacs;
    try {
      this.data = compiler.compile();
    } catch (e) {
      warn('Failed to compile font ' + properties.loadedName);
      this.data = file;
    }
  }
  CFFFont.prototype = {
    get numGlyphs() {
      return this.cff.charStrings.count;
    },
    getCharset: function CFFFont_getCharset() {
      return this.cff.charset.charset;
    },
    getGlyphMapping: function CFFFont_getGlyphMapping() {
      var cff = this.cff;
      var properties = this.properties;
      var charsets = cff.charset.charset;
      var charCodeToGlyphId;
      var glyphId;
      if (properties.composite) {
        charCodeToGlyphId = Object.create(null);
        if (cff.isCIDFont) {
          for (glyphId = 0; glyphId < charsets.length; glyphId++) {
            var cid = charsets[glyphId];
            var charCode = properties.cMap.charCodeOf(cid);
            charCodeToGlyphId[charCode] = glyphId;
          }
        } else {
          for (glyphId = 0; glyphId < cff.charStrings.count; glyphId++) {
            charCodeToGlyphId[glyphId] = glyphId;
          }
        }
        return charCodeToGlyphId;
      }
      var encoding = cff.encoding ? cff.encoding.encoding : null;
      charCodeToGlyphId = type1FontGlyphMapping(properties, encoding, charsets);
      return charCodeToGlyphId;
    }
  };
  return CFFFont;
}();
(function checkSeacSupport() {
  if (typeof navigator !== 'undefined' && /Windows/.test(navigator.userAgent)) {
    SEAC_ANALYSIS_ENABLED = true;
  }
})();
(function checkChromeWindows() {
  if (typeof navigator !== 'undefined' && /Windows.*Chrome/.test(navigator.userAgent)) {
    SKIP_PRIVATE_USE_RANGE_F000_TO_F01F = true;
  }
})();
exports.SEAC_ANALYSIS_ENABLED = SEAC_ANALYSIS_ENABLED;
exports.PRIVATE_USE_OFFSET_START = PRIVATE_USE_OFFSET_START;
exports.PRIVATE_USE_OFFSET_END = PRIVATE_USE_OFFSET_END;
exports.ErrorFont = ErrorFont;
exports.Font = Font;
exports.FontFlags = FontFlags;
exports.IdentityToUnicodeMap = IdentityToUnicodeMap;
exports.ProblematicCharRanges = ProblematicCharRanges;
exports.ToUnicodeMap = ToUnicodeMap;
exports.getFontType = getFontType;