Lib/fontTools/cffLib.py

"""cffLib.py -- read/write tools for Adobe CFF fonts."""

#
# $Id: cffLib.py,v 1.17 2002-05-17 18:36:07 jvr Exp $
#

import struct, sstruct
import string
import types
from fontTools.misc import psCharStrings


DEBUG = 0


cffHeaderFormat = """
	major:   B
	minor:   B
	hdrSize: B
	offSize: B
"""

class CFFFontSet:
	
	def __init__(self):
		pass
	
	def decompile(self, file):
		sstruct.unpack(cffHeaderFormat, file.read(4), self)
		assert self.major == 1 and self.minor == 0, \
				"unknown CFF format: %d.%d" % (self.major, self.minor)
		
		self.fontNames = list(Index(file, "fontNames"))
		self.topDictIndex = TopDictIndex(file)
		self.strings = IndexedStrings(file)
		self.GlobalSubrs = CharStringIndex(file, name="GlobalSubrsIndex")
		self.topDictIndex.strings = self.strings
		self.topDictIndex.GlobalSubrs = self.GlobalSubrs
	
	def __len__(self):
		return len(self.fontNames)
	
	def keys(self):
		return self.fontNames[:]
	
	def values(self):
		return self.topDictIndex
	
	def __getitem__(self, name):
		try:
			index = self.fontNames.index(name)
		except ValueError:
			raise KeyError, name
		return self.topDictIndex[index]
	
	def compile(self):
		strings = IndexedStrings()
		XXXX
	
	def toXML(self, xmlWriter, progress=None):
		xmlWriter.newline()
		for fontName in self.fontNames:
			xmlWriter.begintag("CFFFont", name=fontName)
			xmlWriter.newline()
			font = self[fontName]
			font.toXML(xmlWriter, progress)
			xmlWriter.endtag("CFFFont")
			xmlWriter.newline()
		xmlWriter.newline()
		xmlWriter.begintag("GlobalSubrs")
		xmlWriter.newline()
		self.GlobalSubrs.toXML(xmlWriter, progress)
		xmlWriter.endtag("GlobalSubrs")
		xmlWriter.newline()
		xmlWriter.newline()
	
	def fromXML(self, (name, attrs, content)):
		xxx


class Index:
	
	"""This class represents what the CFF spec calls an INDEX."""
	
	def __init__(self, file, name=None):
		if name is None:
			name = self.__class__.__name__
		if DEBUG:
			print "loading %s at %s" % (name, file.tell())
		self.file = file
		count = readCard16(file)
		self.count = count
		self.items = [None] * count
		if count == 0:
			self.offsets = []
			return
		offSize = readCard8(file)
		if DEBUG:
			print "index count: %s offSize: %s" % (count, offSize)
		assert offSize <= 4, "offSize too large: %s" % offSize
		self.offsets = offsets = []
		pad = '\0' * (4 - offSize)
		for index in range(count+1):
			chunk = file.read(offSize)
			chunk = pad + chunk
			offset, = struct.unpack(">L", chunk)
			offsets.append(int(offset))
		self.offsetBase = file.tell() - 1
		file.seek(self.offsetBase + offsets[-1])  # pretend we've read the whole lot
	
	def __len__(self):
		return self.count
	
	def __getitem__(self, index):
		item = self.items[index]
		if item is not None:
			return item
		offset = self.offsets[index] + self.offsetBase
		size = self.offsets[index+1] - self.offsets[index]
		file = self.file
		file.seek(offset)
		data = file.read(size)
		assert len(data) == size
		item = self.produceItem(index, data, file, offset, size)
		self.items[index] = item
		return item
	
	def produceItem(self, index, data, file, offset, size):
		return data


class CharStringIndex(Index):
	
	def __init__(self, file, globalSubrs=None, private=None, fdSelect=None, fdArray=None,
			name=None):
		Index.__init__(self, file, name)
		self.globalSubrs = globalSubrs
		self.private = private
		self.fdSelect = fdSelect
		self.fdArray = fdArray
	
	def produceItem(self, index, data, file, offset, size):
		if self.private is not None:
			private = self.private
		elif self.fdArray is not None:
			private = self.fdArray[self.fdSelect[index]].Private
		else:
			private = None
		if hasattr(private, "Subrs"):
			subrs = private.Subrs
		else:
			subrs = []
		return psCharStrings.T2CharString(data, subrs=subrs, globalSubrs=self.globalSubrs)
	
	def toXML(self, xmlWriter, progress):
		fdSelect = self.fdSelect
		for i in range(len(self)):
			xmlWriter.begintag("CharString", index=i)
			xmlWriter.newline()
			self[i].toXML(xmlWriter)
			xmlWriter.endtag("CharString")
			xmlWriter.newline()
	
	def getItemAndSelector(self, index):
		fdSelect = self.fdSelect
		if fdSelect is None:
			sel = None
		else:
			sel = fdSelect[index]
		return self[index], sel
			

class TopDictIndex(Index):
	
	def produceItem(self, index, data, file, offset, size):
		top = TopDict(self.strings, file, offset, self.GlobalSubrs)
		top.decompile(data)
		return top
	
	def toXML(self, xmlWriter, progress):
		for i in range(len(self)):
			xmlWriter.begintag("FontDict", index=i)
			xmlWriter.newline()
			self[i].toXML(xmlWriter, progress)
			xmlWriter.endtag("FontDict")
			xmlWriter.newline()


class CharStrings:
	
	def __init__(self, file, charset, globalSubrs, private, fdSelect, fdArray):
		self.charStringsIndex = CharStringIndex(file, globalSubrs, private, fdSelect, fdArray)
		self.nameToIndex = nameToIndex = {}
		for i in range(len(charset)):
			nameToIndex[charset[i]] = i
	
	def keys(self):
		return self.nameToIndex.keys()
	
	def values(self):
		return self.charStringsIndex
	
	def has_key(self, name):
		return self.nameToIndex.has_key(name)
	
	def __len__(self):
		return len(self.charStringsIndex)
	
	def __getitem__(self, name):
		index = self.nameToIndex[name]
		return self.charStringsIndex[index]
	
	def getItemAndSelector(self, name):
		index = self.nameToIndex[name]
		return self.charStringsIndex.getItemAndSelector(index)
	
	def toXML(self, xmlWriter, progress):
		names = self.keys()
		names.sort()
		for name in names:
			charStr, fdSelect = self.getItemAndSelector(name)
			if fdSelect is None:
				xmlWriter.begintag("CharString", name=name)
			else:
				xmlWriter.begintag("CharString",
						[('name', name), ('fdSelect', fdSelect)])
			xmlWriter.newline()
			self[name].toXML(xmlWriter)
			xmlWriter.endtag("CharString")
			xmlWriter.newline()


def readCard8(file):
	return ord(file.read(1))

def readCard16(file):
	value, = struct.unpack(">H", file.read(2))
	return value

def buildOperatorDict(table):
	d = {}
	for op, name, arg, default, conv in table:
		d[op] = (name, arg)
	return d

def buildOrder(table):
	l = []
	for op, name, arg, default, conv in table:
		l.append(name)
	return l

def buildDefaults(table):
	d = {}
	for op, name, arg, default, conv in table:
		if default is not None:
			d[name] = default
	return d

def buildConverters(table):
	d = {}
	for op, name, arg, default, conv in table:
		d[name] = conv
	return d


class XMLConverter:
	def xmlWrite(self, xmlWriter, name, value):
		xmlWriter.begintag(name)
		xmlWriter.newline()
		value.toXML(xmlWriter, None)
		xmlWriter.endtag(name)
		xmlWriter.newline()

class PrivateDictConverter(XMLConverter):
	def read(self, parent, value):
		size, offset = value
		file = parent.file
		pr = PrivateDict(parent.strings, file, offset)
		file.seek(offset)
		data = file.read(size)
		len(data) == size
		pr.decompile(data)
		return pr

class SubrsConverter(XMLConverter):
	def read(self, parent, value):
		file = parent.file
		file.seek(parent.offset + value)  # Offset(self)
		return CharStringIndex(file, name="SubrsIndex")

class CharStringsConverter(XMLConverter):
	def read(self, parent, value):
		file = parent.file
		charset = parent.charset
		globalSubrs = parent.GlobalSubrs
		if hasattr(parent, "ROS"):
			fdSelect, fdArray = parent.FDSelect, parent.FDArray
			private = None
		else:
			fdSelect, fdArray = None, None
			private = parent.Private
		file.seek(value)  # Offset(0)
		return CharStrings(file, charset, globalSubrs, private, fdSelect, fdArray)

class CharsetConverter:
	def read(self, parent, value):
		isCID = hasattr(parent, "ROS")
		if value > 2:
			numGlyphs = parent.numGlyphs
			file = parent.file
			file.seek(value)
			format = readCard8(file)
			if format == 0:
				raise NotImplementedError
			elif format == 1 or format == 2:
				charset = parseCharset(numGlyphs, file, parent.strings, isCID, format)
			elif format == 3:
				raise NotImplementedError
			else:
				raise NotImplementedError
			assert len(charset) == numGlyphs
		else:
			if isCID or not hasattr(parent, "CharStrings"):
				assert value == 0
				charset = None
			elif value == 0:
				charset = ISOAdobe
			elif value == 1:
				charset = Expert
			elif value == 2:
				charset = ExpertSubset
			# self.charset:
			#   0: ISOAdobe (or CID font!)
			#   1: Expert
			#   2: ExpertSubset
			charset = None  # 
		return charset
	def xmlWrite(self, xmlWriter, name, value):
		# XXX GlyphOrder needs to be stored *somewhere*, but not here...
		xmlWriter.simpletag("charset", value=value)
		xmlWriter.newline()


def parseCharset(numGlyphs, file, strings, isCID, format):
	charset = ['.notdef']
	count = 1
	if format == 1:
		nLeftFunc = readCard8
	else:
		nLeftFunc = readCard16
	while count < numGlyphs:
		first = readCard16(file)
		nLeft = nLeftFunc(file)
		if isCID:
			for CID in range(first, first+nLeft+1):
				charset.append(CID)
		else:
			for SID in range(first, first+nLeft+1):
				charset.append(strings[SID])
		count = count + nLeft + 1
	return charset


class FDArrayConverter(XMLConverter):
	def read(self, parent, value):
		file = parent.file
		file.seek(value)
		fdArray = TopDictIndex(file)
		fdArray.strings = parent.strings
		fdArray.GlobalSubrs = parent.GlobalSubrs
		return fdArray


class FDSelectConverter:
	def read(self, parent, value):
		file = parent.file
		file.seek(value)
		format = readCard8(file)
		numGlyphs = parent.numGlyphs
		if format == 0:
			from array import array
			fdSelect = array("B", file.read(numGlyphs)).tolist()
		elif format == 3:
			fdSelect = [None] * numGlyphs
			nRanges = readCard16(file)
			prev = None
			for i in range(nRanges):
				first = readCard16(file)
				if prev is not None:
					for glyphID in range(prev, first):
						fdSelect[glyphID] = fd
				prev = first
				fd = readCard8(file)
			if prev is not None:
				first = readCard16(file)
				for glyphID in range(prev, first):
					fdSelect[glyphID] = fd
		else:
			assert 0, "unsupported FDSelect format: %s" % format
		return fdSelect
	def xmlWrite(self, xmlWriter, name, value):
		pass


topDictOperators = [
#	opcode     name                  argument type   default    converter
	(0,        'version',            'SID',          None,      None),
	(1,        'Notice',             'SID',          None,      None),
	((12, 0),  'Copyright',          'SID',          None,      None),
	(2,        'FullName',           'SID',          None,      None),
	(3,        'FamilyName',         'SID',          None,      None),
	(4,        'Weight',             'SID',          None,      None),
	((12, 1),  'isFixedPitch',       'number',       0,         None),
	((12, 2),  'ItalicAngle',        'number',       0,         None),
	((12, 3),  'UnderlinePosition',  'number',       None,      None),
	((12, 4),  'UnderlineThickness', 'number',       50,        None),
	((12, 5),  'PaintType',          'number',       0,         None),
	((12, 6),  'CharstringType',     'number',       2,         None),
	((12, 7),  'FontMatrix',         'array',  [0.001,0,0,0.001,0,0],  None),
	(13,       'UniqueID',           'number',       None,      None),
	(5,        'FontBBox',           'array',  [0,0,0,0],       None),
	((12, 8),  'StrokeWidth',        'number',       0,         None),
	(14,       'XUID',               'array',        None,      None),
	(15,       'charset',            'number',       0,         CharsetConverter()),
	(16,       'Encoding',           'number',       0,         None),
	(18,       'Private',       ('number','number'), None,      PrivateDictConverter()),
	(17,       'CharStrings',        'number',       None,      CharStringsConverter()),
	((12, 20), 'SyntheticBase',      'number',       None,      None),
	((12, 21), 'PostScript',         'SID',          None,      None),
	((12, 22), 'BaseFontName',       'SID',          None,      None),
	((12, 23), 'BaseFontBlend',      'delta',        None,      None),
	((12, 30), 'ROS',        ('SID','SID','number'), None,      None),
	((12, 31), 'CIDFontVersion',     'number',       0,         None),
	((12, 32), 'CIDFontRevision',    'number',       0,         None),
	((12, 33), 'CIDFontType',        'number',       0,         None),
	((12, 34), 'CIDCount',           'number',       8720,      None),
	((12, 35), 'UIDBase',            'number',       None,      None),
	((12, 36), 'FDArray',            'number',       None,      FDArrayConverter()),
	((12, 37), 'FDSelect',           'number',       None,      FDSelectConverter()),
	((12, 38), 'FontName',           'SID',          None,      None),
]

privateDictOperators = [
#	opcode     name                  argument type   default    converter
	(6,        'BlueValues',         'delta',        None,      None),
	(7,        'OtherBlues',         'delta',        None,      None),
	(8,        'FamilyBlues',        'delta',        None,      None),
	(9,        'FamilyOtherBlues',   'delta',        None,      None),
	((12, 9),  'BlueScale',          'number',       0.039625,  None),
	((12, 10), 'BlueShift',          'number',       7,         None),
	((12, 11), 'BlueFuzz',           'number',       1,         None),
	(10,       'StdHW',              'number',       None,      None),
	(11,       'StdVW',              'number',       None,      None),
	((12, 12), 'StemSnapH',          'delta',        None,      None),
	((12, 13), 'StemSnapV',          'delta',        None,      None),
	((12, 14), 'ForceBold',          'number',       0,         None),
	((12, 17), 'LanguageGroup',      'number',       0,         None),
	((12, 18), 'ExpansionFactor',    'number',       0.06,      None),
	((12, 19), 'initialRandomSeed',  'number',       0,         None),
	(20,       'defaultWidthX',      'number',       0,         None),
	(21,       'nominalWidthX',      'number',       0,         None),
	(19,       'Subrs',              'number',       None,      SubrsConverter()),
]


class TopDictDecompiler(psCharStrings.DictDecompiler):
	operators = buildOperatorDict(topDictOperators)


class PrivateDictDecompiler(psCharStrings.DictDecompiler):
	operators = buildOperatorDict(privateDictOperators)



class BaseDict:
	
	def __init__(self, strings, file, offset):
		self.rawDict = {}
		if DEBUG:
			print "loading %s at %s" % (self, offset)
		self.file = file
		self.offset = offset
		self.strings = strings
	
	def decompile(self, data):
		dec = self.decompiler(self.strings)
		dec.decompile(data)
		self.rawDict = dec.getDict()
		self.postDecompile()
	
	def postDecompile(self):
		pass
	
	def __getattr__(self, name):
		value = self.rawDict.get(name)
		if value is None:
			value = self.defaults.get(name)
		if value is None:
			raise AttributeError, name
		conv = self.converters[name]
		if conv is not None:
			value = conv.read(self, value)
		setattr(self, name, value)
		return value
	
	def toXML(self, xmlWriter, progress):
		for name in self.order:
			value = getattr(self, name, None)
			if value is None:
				continue
			conv = self.converters.get(name)
			if conv is not None:
				conv.xmlWrite(xmlWriter, name, value)
			else:
				if isinstance(value, types.ListType):
					value = " ".join(map(str, value))
				xmlWriter.simpletag(name, value=value)
				xmlWriter.newline()


class TopDict(BaseDict):
	
	defaults = buildDefaults(topDictOperators)
	converters = buildConverters(topDictOperators)
	order = buildOrder(topDictOperators)
	decompiler = TopDictDecompiler
	
	def __init__(self, strings, file, offset, GlobalSubrs):
		BaseDict.__init__(self, strings, file, offset)
		self.GlobalSubrs = GlobalSubrs
	
	def getGlyphOrder(self):
		return self.charset
	
	def postDecompile(self):
		offset = self.rawDict.get("CharStrings")
		if offset is None:
			return
		# get the number of glyphs beforehand.
		self.file.seek(offset)
		self.numGlyphs = readCard16(self.file)
	
	def toXML(self, xmlWriter, progress):
		self.decompileAllCharStrings()
		BaseDict.toXML(self, xmlWriter, progress)
	
	def decompileAllCharStrings(self):
		if not hasattr(self, "CharStrings"):
			return
		for charString in self.CharStrings.values():
			charString.decompile()


class PrivateDict(BaseDict):
	defaults = buildDefaults(privateDictOperators)
	converters = buildConverters(privateDictOperators)
	order = buildOrder(privateDictOperators)
	decompiler = PrivateDictDecompiler


class IndexedStrings:
	
	"""SID -> string mapping."""
	
	def __init__(self, file=None):
		if file is None:
			strings = []
		else:
			strings = list(Index(file, "IndexedStrings"))
		self.strings = strings
	
	def __getitem__(self, SID):
		if SID < cffStandardStringCount:
			return cffStandardStrings[SID]
		else:
			return self.strings[SID - cffStandardStringCount]
	
	def getSID(self, s):
		if not hasattr(self, "stringMapping"):
			self.buildStringMapping()
		if cffStandardStringMapping.has_key(s):
			SID = cffStandardStringMapping[s]
		if self.stringMapping.has_key(s):
			SID = self.stringMapping[s]
		else:
			SID = len(self.strings) + cffStandardStringCount
			self.strings.append(s)
			self.stringMapping[s] = SID
		return SID
	
	def getStrings(self):
		return self.strings
	
	def buildStringMapping(self):
		self.stringMapping = {}
		for index in range(len(self.strings)):
			self.stringMapping[self.strings[index]] = index + cffStandardStringCount


# The 391 Standard Strings as used in the CFF format.
# from Adobe Technical None #5176, version 1.0, 18 March 1998

cffStandardStrings = ['.notdef', 'space', 'exclam', 'quotedbl', 'numbersign', 
		'dollar', 'percent', 'ampersand', 'quoteright', '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', 'quoteleft', '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', 'exclamdown', 'cent', 'sterling', 'fraction', 'yen', 'florin', 
		'section', 'currency', 'quotesingle', 'quotedblleft', 'guillemotleft', 
		'guilsinglleft', 'guilsinglright', 'fi', 'fl', 'endash', 'dagger', 
		'daggerdbl', 'periodcentered', 'paragraph', 'bullet', 'quotesinglbase', 
		'quotedblbase', 'quotedblright', 'guillemotright', 'ellipsis', 'perthousand', 
		'questiondown', 'grave', 'acute', 'circumflex', 'tilde', 'macron', 'breve', 
		'dotaccent', 'dieresis', 'ring', 'cedilla', 'hungarumlaut', 'ogonek', 'caron', 
		'emdash', 'AE', 'ordfeminine', 'Lslash', 'Oslash', 'OE', 'ordmasculine', 'ae', 
		'dotlessi', 'lslash', 'oslash', 'oe', 'germandbls', 'onesuperior', 
		'logicalnot', 'mu', 'trademark', 'Eth', 'onehalf', 'plusminus', 'Thorn', 
		'onequarter', 'divide', 'brokenbar', 'degree', 'thorn', 'threequarters', 
		'twosuperior', 'registered', 'minus', 'eth', 'multiply', 'threesuperior', 
		'copyright', 'Aacute', 'Acircumflex', 'Adieresis', 'Agrave', 'Aring', 
		'Atilde', 'Ccedilla', 'Eacute', 'Ecircumflex', 'Edieresis', 'Egrave', 
		'Iacute', 'Icircumflex', 'Idieresis', 'Igrave', 'Ntilde', 'Oacute', 
		'Ocircumflex', 'Odieresis', 'Ograve', 'Otilde', 'Scaron', 'Uacute', 
		'Ucircumflex', 'Udieresis', 'Ugrave', 'Yacute', 'Ydieresis', 'Zcaron', 
		'aacute', 'acircumflex', 'adieresis', 'agrave', 'aring', 'atilde', 'ccedilla', 
		'eacute', 'ecircumflex', 'edieresis', 'egrave', 'iacute', 'icircumflex', 
		'idieresis', 'igrave', 'ntilde', 'oacute', 'ocircumflex', 'odieresis', 
		'ograve', 'otilde', 'scaron', 'uacute', 'ucircumflex', 'udieresis', 'ugrave', 
		'yacute', 'ydieresis', 'zcaron', 'exclamsmall', 'Hungarumlautsmall', 
		'dollaroldstyle', 'dollarsuperior', 'ampersandsmall', 'Acutesmall', 
		'parenleftsuperior', 'parenrightsuperior', 'twodotenleader', 'onedotenleader', 
		'zerooldstyle', 'oneoldstyle', 'twooldstyle', 'threeoldstyle', 'fouroldstyle', 
		'fiveoldstyle', 'sixoldstyle', 'sevenoldstyle', 'eightoldstyle', 
		'nineoldstyle', 'commasuperior', 'threequartersemdash', 'periodsuperior', 
		'questionsmall', 'asuperior', 'bsuperior', 'centsuperior', 'dsuperior', 
		'esuperior', 'isuperior', 'lsuperior', 'msuperior', 'nsuperior', 'osuperior', 
		'rsuperior', 'ssuperior', 'tsuperior', 'ff', 'ffi', 'ffl', 'parenleftinferior', 
		'parenrightinferior', 'Circumflexsmall', 'hyphensuperior', 'Gravesmall', 
		'Asmall', 'Bsmall', 'Csmall', 'Dsmall', 'Esmall', 'Fsmall', 'Gsmall', 'Hsmall', 
		'Ismall', 'Jsmall', 'Ksmall', 'Lsmall', 'Msmall', 'Nsmall', 'Osmall', 'Psmall', 
		'Qsmall', 'Rsmall', 'Ssmall', 'Tsmall', 'Usmall', 'Vsmall', 'Wsmall', 'Xsmall', 
		'Ysmall', 'Zsmall', 'colonmonetary', 'onefitted', 'rupiah', 'Tildesmall', 
		'exclamdownsmall', 'centoldstyle', 'Lslashsmall', 'Scaronsmall', 'Zcaronsmall', 
		'Dieresissmall', 'Brevesmall', 'Caronsmall', 'Dotaccentsmall', 'Macronsmall', 
		'figuredash', 'hypheninferior', 'Ogoneksmall', 'Ringsmall', 'Cedillasmall', 
		'questiondownsmall', 'oneeighth', 'threeeighths', 'fiveeighths', 'seveneighths', 
		'onethird', 'twothirds', 'zerosuperior', 'foursuperior', 'fivesuperior', 
		'sixsuperior', 'sevensuperior', 'eightsuperior', 'ninesuperior', 'zeroinferior', 
		'oneinferior', 'twoinferior', 'threeinferior', 'fourinferior', 'fiveinferior', 
		'sixinferior', 'seveninferior', 'eightinferior', 'nineinferior', 'centinferior', 
		'dollarinferior', 'periodinferior', 'commainferior', 'Agravesmall', 
		'Aacutesmall', 'Acircumflexsmall', 'Atildesmall', 'Adieresissmall', 'Aringsmall', 
		'AEsmall', 'Ccedillasmall', 'Egravesmall', 'Eacutesmall', 'Ecircumflexsmall', 
		'Edieresissmall', 'Igravesmall', 'Iacutesmall', 'Icircumflexsmall', 
		'Idieresissmall', 'Ethsmall', 'Ntildesmall', 'Ogravesmall', 'Oacutesmall', 
		'Ocircumflexsmall', 'Otildesmall', 'Odieresissmall', 'OEsmall', 'Oslashsmall', 
		'Ugravesmall', 'Uacutesmall', 'Ucircumflexsmall', 'Udieresissmall', 
		'Yacutesmall', 'Thornsmall', 'Ydieresissmall', '001.000', '001.001', '001.002', 
		'001.003', 'Black', 'Bold', 'Book', 'Light', 'Medium', 'Regular', 'Roman', 
		'Semibold'
]

cffStandardStringCount = 391
assert len(cffStandardStrings) == cffStandardStringCount
# build reverse mapping
cffStandardStringMapping = {}
for _i in range(cffStandardStringCount):
	cffStandardStringMapping[cffStandardStrings[_i]] = _i