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2917 lines
88 KiB
2917 lines
88 KiB
"""cffLib: read/write Adobe CFF fonts
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OpenType fonts with PostScript outlines contain a completely independent
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font file, Adobe's *Compact Font Format*. So dealing with OpenType fonts
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requires also dealing with CFF. This module allows you to read and write
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fonts written in the CFF format.
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In 2016, OpenType 1.8 introduced the `CFF2 <https://docs.microsoft.com/en-us/typography/opentype/spec/cff2>`_
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format which, along with other changes, extended the CFF format to deal with
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the demands of variable fonts. This module parses both original CFF and CFF2.
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"""
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from fontTools.misc.py23 import bytechr, byteord, bytesjoin, tobytes, tostr
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from fontTools.misc import sstruct
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from fontTools.misc import psCharStrings
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from fontTools.misc.arrayTools import unionRect, intRect
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from fontTools.misc.textTools import safeEval
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from fontTools.ttLib import TTFont
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from fontTools.ttLib.tables.otBase import OTTableWriter
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from fontTools.ttLib.tables.otBase import OTTableReader
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from fontTools.ttLib.tables import otTables as ot
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from io import BytesIO
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import struct
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import logging
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import re
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# mute cffLib debug messages when running ttx in verbose mode
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DEBUG = logging.DEBUG - 1
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log = logging.getLogger(__name__)
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cffHeaderFormat = """
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major: B
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minor: B
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hdrSize: B
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"""
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maxStackLimit = 513
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# maxstack operator has been deprecated. max stack is now always 513.
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class CFFFontSet(object):
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"""A CFF font "file" can contain more than one font, although this is
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extremely rare (and not allowed within OpenType fonts).
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This class is the entry point for parsing a CFF table. To actually
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manipulate the data inside the CFF font, you will want to access the
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``CFFFontSet``'s :class:`TopDict` object. To do this, a ``CFFFontSet``
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object can either be treated as a dictionary (with appropriate
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``keys()`` and ``values()`` methods) mapping font names to :class:`TopDict`
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objects, or as a list.
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.. code:: python
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from fontTools import ttLib
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tt = ttLib.TTFont("Tests/cffLib/data/LinLibertine_RBI.otf")
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tt["CFF "].cff
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# <fontTools.cffLib.CFFFontSet object at 0x101e24c90>
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tt["CFF "].cff[0] # Here's your actual font data
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# <fontTools.cffLib.TopDict object at 0x1020f1fd0>
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"""
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def decompile(self, file, otFont, isCFF2=None):
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"""Parse a binary CFF file into an internal representation. ``file``
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should be a file handle object. ``otFont`` is the top-level
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:py:class:`fontTools.ttLib.ttFont.TTFont` object containing this CFF file.
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If ``isCFF2`` is passed and set to ``True`` or ``False``, then the
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library makes an assertion that the CFF header is of the appropriate
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version.
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"""
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self.otFont = otFont
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sstruct.unpack(cffHeaderFormat, file.read(3), self)
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if isCFF2 is not None:
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# called from ttLib: assert 'major' as read from file matches the
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# expected version
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expected_major = (2 if isCFF2 else 1)
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if self.major != expected_major:
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raise ValueError(
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"Invalid CFF 'major' version: expected %d, found %d" %
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(expected_major, self.major))
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else:
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# use 'major' version from file to determine if isCFF2
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assert self.major in (1, 2), "Unknown CFF format"
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isCFF2 = self.major == 2
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if not isCFF2:
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self.offSize = struct.unpack("B", file.read(1))[0]
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file.seek(self.hdrSize)
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self.fontNames = list(tostr(s) for s in Index(file, isCFF2=isCFF2))
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self.topDictIndex = TopDictIndex(file, isCFF2=isCFF2)
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self.strings = IndexedStrings(file)
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else: # isCFF2
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self.topDictSize = struct.unpack(">H", file.read(2))[0]
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file.seek(self.hdrSize)
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self.fontNames = ["CFF2Font"]
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cff2GetGlyphOrder = otFont.getGlyphOrder
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# in CFF2, offsetSize is the size of the TopDict data.
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self.topDictIndex = TopDictIndex(
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file, cff2GetGlyphOrder, self.topDictSize, isCFF2=isCFF2)
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self.strings = None
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self.GlobalSubrs = GlobalSubrsIndex(file, isCFF2=isCFF2)
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self.topDictIndex.strings = self.strings
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self.topDictIndex.GlobalSubrs = self.GlobalSubrs
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def __len__(self):
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return len(self.fontNames)
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def keys(self):
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return list(self.fontNames)
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def values(self):
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return self.topDictIndex
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def __getitem__(self, nameOrIndex):
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""" Return TopDict instance identified by name (str) or index (int
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or any object that implements `__index__`).
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"""
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if hasattr(nameOrIndex, "__index__"):
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index = nameOrIndex.__index__()
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elif isinstance(nameOrIndex, str):
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name = nameOrIndex
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try:
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index = self.fontNames.index(name)
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except ValueError:
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raise KeyError(nameOrIndex)
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else:
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raise TypeError(nameOrIndex)
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return self.topDictIndex[index]
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def compile(self, file, otFont, isCFF2=None):
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"""Write the object back into binary representation onto the given file.
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``file`` should be a file handle object. ``otFont`` is the top-level
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:py:class:`fontTools.ttLib.ttFont.TTFont` object containing this CFF file.
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If ``isCFF2`` is passed and set to ``True`` or ``False``, then the
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library makes an assertion that the CFF header is of the appropriate
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version.
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"""
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self.otFont = otFont
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if isCFF2 is not None:
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# called from ttLib: assert 'major' value matches expected version
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expected_major = (2 if isCFF2 else 1)
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if self.major != expected_major:
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raise ValueError(
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"Invalid CFF 'major' version: expected %d, found %d" %
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(expected_major, self.major))
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else:
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# use current 'major' value to determine output format
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assert self.major in (1, 2), "Unknown CFF format"
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isCFF2 = self.major == 2
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if otFont.recalcBBoxes and not isCFF2:
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for topDict in self.topDictIndex:
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topDict.recalcFontBBox()
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if not isCFF2:
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strings = IndexedStrings()
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else:
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strings = None
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writer = CFFWriter(isCFF2)
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topCompiler = self.topDictIndex.getCompiler(strings, self, isCFF2=isCFF2)
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if isCFF2:
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self.hdrSize = 5
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writer.add(sstruct.pack(cffHeaderFormat, self))
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# Note: topDictSize will most likely change in CFFWriter.toFile().
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self.topDictSize = topCompiler.getDataLength()
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writer.add(struct.pack(">H", self.topDictSize))
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else:
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self.hdrSize = 4
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self.offSize = 4 # will most likely change in CFFWriter.toFile().
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writer.add(sstruct.pack(cffHeaderFormat, self))
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writer.add(struct.pack("B", self.offSize))
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if not isCFF2:
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fontNames = Index()
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for name in self.fontNames:
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fontNames.append(name)
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writer.add(fontNames.getCompiler(strings, self, isCFF2=isCFF2))
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writer.add(topCompiler)
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if not isCFF2:
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writer.add(strings.getCompiler())
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writer.add(self.GlobalSubrs.getCompiler(strings, self, isCFF2=isCFF2))
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for topDict in self.topDictIndex:
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if not hasattr(topDict, "charset") or topDict.charset is None:
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charset = otFont.getGlyphOrder()
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topDict.charset = charset
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children = topCompiler.getChildren(strings)
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for child in children:
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writer.add(child)
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writer.toFile(file)
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def toXML(self, xmlWriter):
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"""Write the object into XML representation onto the given
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:class:`fontTools.misc.xmlWriter.XMLWriter`.
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.. code:: python
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writer = xmlWriter.XMLWriter(sys.stdout)
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tt["CFF "].cff.toXML(writer)
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"""
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xmlWriter.simpletag("major", value=self.major)
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xmlWriter.newline()
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xmlWriter.simpletag("minor", value=self.minor)
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xmlWriter.newline()
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for fontName in self.fontNames:
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xmlWriter.begintag("CFFFont", name=tostr(fontName))
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xmlWriter.newline()
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font = self[fontName]
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font.toXML(xmlWriter)
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xmlWriter.endtag("CFFFont")
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xmlWriter.newline()
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xmlWriter.newline()
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xmlWriter.begintag("GlobalSubrs")
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xmlWriter.newline()
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self.GlobalSubrs.toXML(xmlWriter)
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xmlWriter.endtag("GlobalSubrs")
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xmlWriter.newline()
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def fromXML(self, name, attrs, content, otFont=None):
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"""Reads data from the XML element into the ``CFFFontSet`` object."""
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self.otFont = otFont
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# set defaults. These will be replaced if there are entries for them
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# in the XML file.
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if not hasattr(self, "major"):
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self.major = 1
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if not hasattr(self, "minor"):
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self.minor = 0
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if name == "CFFFont":
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if self.major == 1:
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if not hasattr(self, "offSize"):
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# this will be recalculated when the cff is compiled.
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self.offSize = 4
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if not hasattr(self, "hdrSize"):
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self.hdrSize = 4
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if not hasattr(self, "GlobalSubrs"):
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self.GlobalSubrs = GlobalSubrsIndex()
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if not hasattr(self, "fontNames"):
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self.fontNames = []
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self.topDictIndex = TopDictIndex()
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fontName = attrs["name"]
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self.fontNames.append(fontName)
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topDict = TopDict(GlobalSubrs=self.GlobalSubrs)
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topDict.charset = None # gets filled in later
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elif self.major == 2:
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if not hasattr(self, "hdrSize"):
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self.hdrSize = 5
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if not hasattr(self, "GlobalSubrs"):
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self.GlobalSubrs = GlobalSubrsIndex()
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if not hasattr(self, "fontNames"):
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self.fontNames = ["CFF2Font"]
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cff2GetGlyphOrder = self.otFont.getGlyphOrder
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topDict = TopDict(
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GlobalSubrs=self.GlobalSubrs,
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cff2GetGlyphOrder=cff2GetGlyphOrder)
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self.topDictIndex = TopDictIndex(None, cff2GetGlyphOrder, None)
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self.topDictIndex.append(topDict)
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for element in content:
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if isinstance(element, str):
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continue
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name, attrs, content = element
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topDict.fromXML(name, attrs, content)
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if hasattr(topDict, "VarStore") and topDict.FDArray[0].vstore is None:
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fdArray = topDict.FDArray
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for fontDict in fdArray:
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if hasattr(fontDict, "Private"):
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fontDict.Private.vstore = topDict.VarStore
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elif name == "GlobalSubrs":
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subrCharStringClass = psCharStrings.T2CharString
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if not hasattr(self, "GlobalSubrs"):
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self.GlobalSubrs = GlobalSubrsIndex()
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for element in content:
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if isinstance(element, str):
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continue
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name, attrs, content = element
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subr = subrCharStringClass()
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subr.fromXML(name, attrs, content)
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self.GlobalSubrs.append(subr)
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elif name == "major":
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self.major = int(attrs['value'])
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elif name == "minor":
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self.minor = int(attrs['value'])
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def convertCFFToCFF2(self, otFont):
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"""Converts this object from CFF format to CFF2 format. This conversion
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is done 'in-place'. The conversion cannot be reversed.
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This assumes a decompiled CFF table. (i.e. that the object has been
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filled via :meth:`decompile`.)"""
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self.major = 2
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cff2GetGlyphOrder = self.otFont.getGlyphOrder
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topDictData = TopDictIndex(None, cff2GetGlyphOrder, None)
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topDictData.items = self.topDictIndex.items
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self.topDictIndex = topDictData
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topDict = topDictData[0]
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if hasattr(topDict, 'Private'):
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privateDict = topDict.Private
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else:
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privateDict = None
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opOrder = buildOrder(topDictOperators2)
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topDict.order = opOrder
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topDict.cff2GetGlyphOrder = cff2GetGlyphOrder
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for entry in topDictOperators:
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key = entry[1]
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if key not in opOrder:
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if key in topDict.rawDict:
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del topDict.rawDict[key]
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if hasattr(topDict, key):
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delattr(topDict, key)
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if not hasattr(topDict, "FDArray"):
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fdArray = topDict.FDArray = FDArrayIndex()
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fdArray.strings = None
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fdArray.GlobalSubrs = topDict.GlobalSubrs
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topDict.GlobalSubrs.fdArray = fdArray
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charStrings = topDict.CharStrings
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if charStrings.charStringsAreIndexed:
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charStrings.charStringsIndex.fdArray = fdArray
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else:
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charStrings.fdArray = fdArray
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fontDict = FontDict()
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fontDict.setCFF2(True)
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fdArray.append(fontDict)
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fontDict.Private = privateDict
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privateOpOrder = buildOrder(privateDictOperators2)
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for entry in privateDictOperators:
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key = entry[1]
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if key not in privateOpOrder:
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if key in privateDict.rawDict:
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# print "Removing private dict", key
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del privateDict.rawDict[key]
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if hasattr(privateDict, key):
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delattr(privateDict, key)
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# print "Removing privateDict attr", key
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else:
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# clean up the PrivateDicts in the fdArray
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fdArray = topDict.FDArray
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privateOpOrder = buildOrder(privateDictOperators2)
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for fontDict in fdArray:
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fontDict.setCFF2(True)
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for key in fontDict.rawDict.keys():
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if key not in fontDict.order:
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del fontDict.rawDict[key]
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if hasattr(fontDict, key):
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delattr(fontDict, key)
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privateDict = fontDict.Private
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for entry in privateDictOperators:
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key = entry[1]
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if key not in privateOpOrder:
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if key in privateDict.rawDict:
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# print "Removing private dict", key
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del privateDict.rawDict[key]
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if hasattr(privateDict, key):
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delattr(privateDict, key)
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# print "Removing privateDict attr", key
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# At this point, the Subrs and Charstrings are all still T2Charstring class
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# easiest to fix this by compiling, then decompiling again
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file = BytesIO()
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self.compile(file, otFont, isCFF2=True)
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file.seek(0)
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self.decompile(file, otFont, isCFF2=True)
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class CFFWriter(object):
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"""Helper class for serializing CFF data to binary. Used by
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:meth:`CFFFontSet.compile`."""
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def __init__(self, isCFF2):
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self.data = []
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self.isCFF2 = isCFF2
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def add(self, table):
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self.data.append(table)
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def toFile(self, file):
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lastPosList = None
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count = 1
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while True:
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log.log(DEBUG, "CFFWriter.toFile() iteration: %d", count)
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count = count + 1
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pos = 0
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posList = [pos]
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for item in self.data:
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if hasattr(item, "getDataLength"):
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endPos = pos + item.getDataLength()
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if isinstance(item, TopDictIndexCompiler) and item.isCFF2:
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self.topDictSize = item.getDataLength()
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else:
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endPos = pos + len(item)
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if hasattr(item, "setPos"):
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item.setPos(pos, endPos)
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pos = endPos
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posList.append(pos)
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if posList == lastPosList:
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break
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lastPosList = posList
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log.log(DEBUG, "CFFWriter.toFile() writing to file.")
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begin = file.tell()
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if self.isCFF2:
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self.data[1] = struct.pack(">H", self.topDictSize)
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else:
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self.offSize = calcOffSize(lastPosList[-1])
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self.data[1] = struct.pack("B", self.offSize)
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posList = [0]
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for item in self.data:
|
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if hasattr(item, "toFile"):
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item.toFile(file)
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else:
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file.write(item)
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posList.append(file.tell() - begin)
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assert posList == lastPosList
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|
|
|
|
def calcOffSize(largestOffset):
|
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if largestOffset < 0x100:
|
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offSize = 1
|
|
elif largestOffset < 0x10000:
|
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offSize = 2
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elif largestOffset < 0x1000000:
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offSize = 3
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else:
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offSize = 4
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return offSize
|
|
|
|
|
|
class IndexCompiler(object):
|
|
"""Base class for writing CFF `INDEX data <https://docs.microsoft.com/en-us/typography/opentype/spec/cff2#5-index-data>`_
|
|
to binary."""
|
|
|
|
def __init__(self, items, strings, parent, isCFF2=None):
|
|
if isCFF2 is None and hasattr(parent, "isCFF2"):
|
|
isCFF2 = parent.isCFF2
|
|
assert isCFF2 is not None
|
|
self.isCFF2 = isCFF2
|
|
self.items = self.getItems(items, strings)
|
|
self.parent = parent
|
|
|
|
def getItems(self, items, strings):
|
|
return items
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|
|
def getOffsets(self):
|
|
# An empty INDEX contains only the count field.
|
|
if self.items:
|
|
pos = 1
|
|
offsets = [pos]
|
|
for item in self.items:
|
|
if hasattr(item, "getDataLength"):
|
|
pos = pos + item.getDataLength()
|
|
else:
|
|
pos = pos + len(item)
|
|
offsets.append(pos)
|
|
else:
|
|
offsets = []
|
|
return offsets
|
|
|
|
def getDataLength(self):
|
|
if self.isCFF2:
|
|
countSize = 4
|
|
else:
|
|
countSize = 2
|
|
|
|
if self.items:
|
|
lastOffset = self.getOffsets()[-1]
|
|
offSize = calcOffSize(lastOffset)
|
|
dataLength = (
|
|
countSize + # count
|
|
1 + # offSize
|
|
(len(self.items) + 1) * offSize + # the offsets
|
|
lastOffset - 1 # size of object data
|
|
)
|
|
else:
|
|
# count. For empty INDEX tables, this is the only entry.
|
|
dataLength = countSize
|
|
|
|
return dataLength
|
|
|
|
def toFile(self, file):
|
|
offsets = self.getOffsets()
|
|
if self.isCFF2:
|
|
writeCard32(file, len(self.items))
|
|
else:
|
|
writeCard16(file, len(self.items))
|
|
# An empty INDEX contains only the count field.
|
|
if self.items:
|
|
offSize = calcOffSize(offsets[-1])
|
|
writeCard8(file, offSize)
|
|
offSize = -offSize
|
|
pack = struct.pack
|
|
for offset in offsets:
|
|
binOffset = pack(">l", offset)[offSize:]
|
|
assert len(binOffset) == -offSize
|
|
file.write(binOffset)
|
|
for item in self.items:
|
|
if hasattr(item, "toFile"):
|
|
item.toFile(file)
|
|
else:
|
|
data = tobytes(item, encoding="latin1")
|
|
file.write(data)
|
|
|
|
|
|
class IndexedStringsCompiler(IndexCompiler):
|
|
|
|
def getItems(self, items, strings):
|
|
return items.strings
|
|
|
|
|
|
class TopDictIndexCompiler(IndexCompiler):
|
|
"""Helper class for writing the TopDict to binary."""
|
|
|
|
def getItems(self, items, strings):
|
|
out = []
|
|
for item in items:
|
|
out.append(item.getCompiler(strings, self))
|
|
return out
|
|
|
|
def getChildren(self, strings):
|
|
children = []
|
|
for topDict in self.items:
|
|
children.extend(topDict.getChildren(strings))
|
|
return children
|
|
|
|
def getOffsets(self):
|
|
if self.isCFF2:
|
|
offsets = [0, self.items[0].getDataLength()]
|
|
return offsets
|
|
else:
|
|
return super(TopDictIndexCompiler, self).getOffsets()
|
|
|
|
def getDataLength(self):
|
|
if self.isCFF2:
|
|
dataLength = self.items[0].getDataLength()
|
|
return dataLength
|
|
else:
|
|
return super(TopDictIndexCompiler, self).getDataLength()
|
|
|
|
def toFile(self, file):
|
|
if self.isCFF2:
|
|
self.items[0].toFile(file)
|
|
else:
|
|
super(TopDictIndexCompiler, self).toFile(file)
|
|
|
|
|
|
class FDArrayIndexCompiler(IndexCompiler):
|
|
"""Helper class for writing the
|
|
`Font DICT INDEX <https://docs.microsoft.com/en-us/typography/opentype/spec/cff2#10-font-dict-index-font-dicts-and-fdselect>`_
|
|
to binary."""
|
|
|
|
def getItems(self, items, strings):
|
|
out = []
|
|
for item in items:
|
|
out.append(item.getCompiler(strings, self))
|
|
return out
|
|
|
|
def getChildren(self, strings):
|
|
children = []
|
|
for fontDict in self.items:
|
|
children.extend(fontDict.getChildren(strings))
|
|
return children
|
|
|
|
def toFile(self, file):
|
|
offsets = self.getOffsets()
|
|
if self.isCFF2:
|
|
writeCard32(file, len(self.items))
|
|
else:
|
|
writeCard16(file, len(self.items))
|
|
offSize = calcOffSize(offsets[-1])
|
|
writeCard8(file, offSize)
|
|
offSize = -offSize
|
|
pack = struct.pack
|
|
for offset in offsets:
|
|
binOffset = pack(">l", offset)[offSize:]
|
|
assert len(binOffset) == -offSize
|
|
file.write(binOffset)
|
|
for item in self.items:
|
|
if hasattr(item, "toFile"):
|
|
item.toFile(file)
|
|
else:
|
|
file.write(item)
|
|
|
|
def setPos(self, pos, endPos):
|
|
self.parent.rawDict["FDArray"] = pos
|
|
|
|
|
|
class GlobalSubrsCompiler(IndexCompiler):
|
|
"""Helper class for writing the `global subroutine INDEX <https://docs.microsoft.com/en-us/typography/opentype/spec/cff2#9-local-and-global-subr-indexes>`_
|
|
to binary."""
|
|
|
|
def getItems(self, items, strings):
|
|
out = []
|
|
for cs in items:
|
|
cs.compile(self.isCFF2)
|
|
out.append(cs.bytecode)
|
|
return out
|
|
|
|
|
|
class SubrsCompiler(GlobalSubrsCompiler):
|
|
"""Helper class for writing the `local subroutine INDEX <https://docs.microsoft.com/en-us/typography/opentype/spec/cff2#9-local-and-global-subr-indexes>`_
|
|
to binary."""
|
|
|
|
def setPos(self, pos, endPos):
|
|
offset = pos - self.parent.pos
|
|
self.parent.rawDict["Subrs"] = offset
|
|
|
|
|
|
class CharStringsCompiler(GlobalSubrsCompiler):
|
|
"""Helper class for writing the `CharStrings INDEX <https://docs.microsoft.com/en-us/typography/opentype/spec/cff2#9-local-and-global-subr-indexes>`_
|
|
to binary."""
|
|
def getItems(self, items, strings):
|
|
out = []
|
|
for cs in items:
|
|
cs.compile(self.isCFF2)
|
|
out.append(cs.bytecode)
|
|
return out
|
|
|
|
def setPos(self, pos, endPos):
|
|
self.parent.rawDict["CharStrings"] = pos
|
|
|
|
|
|
class Index(object):
|
|
"""This class represents what the CFF spec calls an INDEX (an array of
|
|
variable-sized objects). `Index` items can be addressed and set using
|
|
Python list indexing."""
|
|
|
|
compilerClass = IndexCompiler
|
|
|
|
def __init__(self, file=None, isCFF2=None):
|
|
assert (isCFF2 is None) == (file is None)
|
|
self.items = []
|
|
name = self.__class__.__name__
|
|
if file is None:
|
|
return
|
|
self._isCFF2 = isCFF2
|
|
log.log(DEBUG, "loading %s at %s", name, file.tell())
|
|
self.file = file
|
|
if isCFF2:
|
|
count = readCard32(file)
|
|
else:
|
|
count = readCard16(file)
|
|
if count == 0:
|
|
return
|
|
self.items = [None] * count
|
|
offSize = readCard8(file)
|
|
log.log(DEBUG, " index count: %s offSize: %s", count, offSize)
|
|
assert offSize <= 4, "offSize too large: %s" % offSize
|
|
self.offsets = offsets = []
|
|
pad = b'\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
|
|
log.log(DEBUG, " end of %s at %s", name, file.tell())
|
|
|
|
def __len__(self):
|
|
return len(self.items)
|
|
|
|
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)
|
|
self.items[index] = item
|
|
return item
|
|
|
|
def __setitem__(self, index, item):
|
|
self.items[index] = item
|
|
|
|
def produceItem(self, index, data, file, offset):
|
|
return data
|
|
|
|
def append(self, item):
|
|
"""Add an item to an INDEX."""
|
|
self.items.append(item)
|
|
|
|
def getCompiler(self, strings, parent, isCFF2=None):
|
|
return self.compilerClass(self, strings, parent, isCFF2=isCFF2)
|
|
|
|
def clear(self):
|
|
"""Empty the INDEX."""
|
|
del self.items[:]
|
|
|
|
|
|
class GlobalSubrsIndex(Index):
|
|
"""This index contains all the global subroutines in the font. A global
|
|
subroutine is a set of ``CharString`` data which is accessible to any
|
|
glyph in the font, and are used to store repeated instructions - for
|
|
example, components may be encoded as global subroutines, but so could
|
|
hinting instructions.
|
|
|
|
Remember that when interpreting a ``callgsubr`` instruction (or indeed
|
|
a ``callsubr`` instruction) that you will need to add the "subroutine
|
|
number bias" to number given:
|
|
|
|
.. code:: python
|
|
|
|
tt = ttLib.TTFont("Almendra-Bold.otf")
|
|
u = tt["CFF "].cff[0].CharStrings["udieresis"]
|
|
u.decompile()
|
|
|
|
u.toXML(XMLWriter(sys.stdout))
|
|
# <some stuff>
|
|
# -64 callgsubr <-- Subroutine which implements the dieresis mark
|
|
# <other stuff>
|
|
|
|
tt["CFF "].cff[0].GlobalSubrs[-64] # <-- WRONG
|
|
# <T2CharString (bytecode) at 103451d10>
|
|
|
|
tt["CFF "].cff[0].GlobalSubrs[-64 + 107] # <-- RIGHT
|
|
# <T2CharString (source) at 103451390>
|
|
|
|
("The bias applied depends on the number of subrs (gsubrs). If the number of
|
|
subrs (gsubrs) is less than 1240, the bias is 107. Otherwise if it is less
|
|
than 33900, it is 1131; otherwise it is 32768.",
|
|
`Subroutine Operators <https://docs.microsoft.com/en-us/typography/opentype/otspec180/cff2charstr#section4.4>`)
|
|
"""
|
|
|
|
compilerClass = GlobalSubrsCompiler
|
|
subrClass = psCharStrings.T2CharString
|
|
charStringClass = psCharStrings.T2CharString
|
|
|
|
def __init__(self, file=None, globalSubrs=None, private=None,
|
|
fdSelect=None, fdArray=None, isCFF2=None):
|
|
super(GlobalSubrsIndex, self).__init__(file, isCFF2=isCFF2)
|
|
self.globalSubrs = globalSubrs
|
|
self.private = private
|
|
if fdSelect:
|
|
self.fdSelect = fdSelect
|
|
if fdArray:
|
|
self.fdArray = fdArray
|
|
|
|
def produceItem(self, index, data, file, offset):
|
|
if self.private is not None:
|
|
private = self.private
|
|
elif hasattr(self, 'fdArray') and self.fdArray is not None:
|
|
if hasattr(self, 'fdSelect') and self.fdSelect is not None:
|
|
fdIndex = self.fdSelect[index]
|
|
else:
|
|
fdIndex = 0
|
|
private = self.fdArray[fdIndex].Private
|
|
else:
|
|
private = None
|
|
return self.subrClass(data, private=private, globalSubrs=self.globalSubrs)
|
|
|
|
def toXML(self, xmlWriter):
|
|
"""Write the subroutines index into XML representation onto the given
|
|
:class:`fontTools.misc.xmlWriter.XMLWriter`.
|
|
|
|
.. code:: python
|
|
|
|
writer = xmlWriter.XMLWriter(sys.stdout)
|
|
tt["CFF "].cff[0].GlobalSubrs.toXML(writer)
|
|
|
|
"""
|
|
xmlWriter.comment(
|
|
"The 'index' attribute is only for humans; "
|
|
"it is ignored when parsed.")
|
|
xmlWriter.newline()
|
|
for i in range(len(self)):
|
|
subr = self[i]
|
|
if subr.needsDecompilation():
|
|
xmlWriter.begintag("CharString", index=i, raw=1)
|
|
else:
|
|
xmlWriter.begintag("CharString", index=i)
|
|
xmlWriter.newline()
|
|
subr.toXML(xmlWriter)
|
|
xmlWriter.endtag("CharString")
|
|
xmlWriter.newline()
|
|
|
|
def fromXML(self, name, attrs, content):
|
|
if name != "CharString":
|
|
return
|
|
subr = self.subrClass()
|
|
subr.fromXML(name, attrs, content)
|
|
self.append(subr)
|
|
|
|
def getItemAndSelector(self, index):
|
|
sel = None
|
|
if hasattr(self, 'fdSelect'):
|
|
sel = self.fdSelect[index]
|
|
return self[index], sel
|
|
|
|
|
|
class SubrsIndex(GlobalSubrsIndex):
|
|
"""This index contains a glyph's local subroutines. A local subroutine is a
|
|
private set of ``CharString`` data which is accessible only to the glyph to
|
|
which the index is attached."""
|
|
|
|
compilerClass = SubrsCompiler
|
|
|
|
|
|
class TopDictIndex(Index):
|
|
"""This index represents the array of ``TopDict`` structures in the font
|
|
(again, usually only one entry is present). Hence the following calls are
|
|
equivalent:
|
|
|
|
.. code:: python
|
|
|
|
tt["CFF "].cff[0]
|
|
# <fontTools.cffLib.TopDict object at 0x102ed6e50>
|
|
tt["CFF "].cff.topDictIndex[0]
|
|
# <fontTools.cffLib.TopDict object at 0x102ed6e50>
|
|
|
|
"""
|
|
|
|
compilerClass = TopDictIndexCompiler
|
|
|
|
def __init__(self, file=None, cff2GetGlyphOrder=None, topSize=0,
|
|
isCFF2=None):
|
|
assert (isCFF2 is None) == (file is None)
|
|
self.cff2GetGlyphOrder = cff2GetGlyphOrder
|
|
if file is not None and isCFF2:
|
|
self._isCFF2 = isCFF2
|
|
self.items = []
|
|
name = self.__class__.__name__
|
|
log.log(DEBUG, "loading %s at %s", name, file.tell())
|
|
self.file = file
|
|
count = 1
|
|
self.items = [None] * count
|
|
self.offsets = [0, topSize]
|
|
self.offsetBase = file.tell()
|
|
# pretend we've read the whole lot
|
|
file.seek(self.offsetBase + topSize)
|
|
log.log(DEBUG, " end of %s at %s", name, file.tell())
|
|
else:
|
|
super(TopDictIndex, self).__init__(file, isCFF2=isCFF2)
|
|
|
|
def produceItem(self, index, data, file, offset):
|
|
top = TopDict(
|
|
self.strings, file, offset, self.GlobalSubrs,
|
|
self.cff2GetGlyphOrder, isCFF2=self._isCFF2)
|
|
top.decompile(data)
|
|
return top
|
|
|
|
def toXML(self, xmlWriter):
|
|
for i in range(len(self)):
|
|
xmlWriter.begintag("FontDict", index=i)
|
|
xmlWriter.newline()
|
|
self[i].toXML(xmlWriter)
|
|
xmlWriter.endtag("FontDict")
|
|
xmlWriter.newline()
|
|
|
|
|
|
class FDArrayIndex(Index):
|
|
|
|
compilerClass = FDArrayIndexCompiler
|
|
|
|
def toXML(self, xmlWriter):
|
|
for i in range(len(self)):
|
|
xmlWriter.begintag("FontDict", index=i)
|
|
xmlWriter.newline()
|
|
self[i].toXML(xmlWriter)
|
|
xmlWriter.endtag("FontDict")
|
|
xmlWriter.newline()
|
|
|
|
def produceItem(self, index, data, file, offset):
|
|
fontDict = FontDict(
|
|
self.strings, file, offset, self.GlobalSubrs, isCFF2=self._isCFF2,
|
|
vstore=self.vstore)
|
|
fontDict.decompile(data)
|
|
return fontDict
|
|
|
|
def fromXML(self, name, attrs, content):
|
|
if name != "FontDict":
|
|
return
|
|
fontDict = FontDict()
|
|
for element in content:
|
|
if isinstance(element, str):
|
|
continue
|
|
name, attrs, content = element
|
|
fontDict.fromXML(name, attrs, content)
|
|
self.append(fontDict)
|
|
|
|
|
|
class VarStoreData(object):
|
|
|
|
def __init__(self, file=None, otVarStore=None):
|
|
self.file = file
|
|
self.data = None
|
|
self.otVarStore = otVarStore
|
|
self.font = TTFont() # dummy font for the decompile function.
|
|
|
|
def decompile(self):
|
|
if self.file:
|
|
class GlobalState(object):
|
|
def __init__(self, tableType, cachingStats):
|
|
self.tableType = tableType
|
|
self.cachingStats = cachingStats
|
|
globalState = GlobalState(tableType="VarStore", cachingStats={})
|
|
# read data in from file. Assume position is correct.
|
|
length = readCard16(self.file)
|
|
self.data = self.file.read(length)
|
|
globalState = {}
|
|
reader = OTTableReader(self.data, globalState)
|
|
self.otVarStore = ot.VarStore()
|
|
self.otVarStore.decompile(reader, self.font)
|
|
return self
|
|
|
|
def compile(self):
|
|
writer = OTTableWriter()
|
|
self.otVarStore.compile(writer, self.font)
|
|
# Note that this omits the initial Card16 length from the CFF2
|
|
# VarStore data block
|
|
self.data = writer.getAllData()
|
|
|
|
def writeXML(self, xmlWriter, name):
|
|
self.otVarStore.toXML(xmlWriter, self.font)
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
self.otVarStore = ot.VarStore()
|
|
for element in content:
|
|
if isinstance(element, tuple):
|
|
name, attrs, content = element
|
|
self.otVarStore.fromXML(name, attrs, content, self.font)
|
|
else:
|
|
pass
|
|
return None
|
|
|
|
def __len__(self):
|
|
return len(self.data)
|
|
|
|
def getNumRegions(self, vsIndex):
|
|
varData = self.otVarStore.VarData[vsIndex]
|
|
numRegions = varData.VarRegionCount
|
|
return numRegions
|
|
|
|
|
|
class FDSelect(object):
|
|
|
|
def __init__(self, file=None, numGlyphs=None, format=None):
|
|
if file:
|
|
# read data in from file
|
|
self.format = readCard8(file)
|
|
if self.format == 0:
|
|
from array import array
|
|
self.gidArray = array("B", file.read(numGlyphs)).tolist()
|
|
elif self.format == 3:
|
|
gidArray = [None] * numGlyphs
|
|
nRanges = readCard16(file)
|
|
fd = None
|
|
prev = None
|
|
for i in range(nRanges):
|
|
first = readCard16(file)
|
|
if prev is not None:
|
|
for glyphID in range(prev, first):
|
|
gidArray[glyphID] = fd
|
|
prev = first
|
|
fd = readCard8(file)
|
|
if prev is not None:
|
|
first = readCard16(file)
|
|
for glyphID in range(prev, first):
|
|
gidArray[glyphID] = fd
|
|
self.gidArray = gidArray
|
|
elif self.format == 4:
|
|
gidArray = [None] * numGlyphs
|
|
nRanges = readCard32(file)
|
|
fd = None
|
|
prev = None
|
|
for i in range(nRanges):
|
|
first = readCard32(file)
|
|
if prev is not None:
|
|
for glyphID in range(prev, first):
|
|
gidArray[glyphID] = fd
|
|
prev = first
|
|
fd = readCard16(file)
|
|
if prev is not None:
|
|
first = readCard32(file)
|
|
for glyphID in range(prev, first):
|
|
gidArray[glyphID] = fd
|
|
self.gidArray = gidArray
|
|
else:
|
|
assert False, "unsupported FDSelect format: %s" % format
|
|
else:
|
|
# reading from XML. Make empty gidArray, and leave format as passed in.
|
|
# format is None will result in the smallest representation being used.
|
|
self.format = format
|
|
self.gidArray = []
|
|
|
|
def __len__(self):
|
|
return len(self.gidArray)
|
|
|
|
def __getitem__(self, index):
|
|
return self.gidArray[index]
|
|
|
|
def __setitem__(self, index, fdSelectValue):
|
|
self.gidArray[index] = fdSelectValue
|
|
|
|
def append(self, fdSelectValue):
|
|
self.gidArray.append(fdSelectValue)
|
|
|
|
|
|
class CharStrings(object):
|
|
"""The ``CharStrings`` in the font represent the instructions for drawing
|
|
each glyph. This object presents a dictionary interface to the font's
|
|
CharStrings, indexed by glyph name:
|
|
|
|
.. code:: python
|
|
|
|
tt["CFF "].cff[0].CharStrings["a"]
|
|
# <T2CharString (bytecode) at 103451e90>
|
|
|
|
See :class:`fontTools.misc.psCharStrings.T1CharString` and
|
|
:class:`fontTools.misc.psCharStrings.T2CharString` for how to decompile,
|
|
compile and interpret the glyph drawing instructions in the returned objects.
|
|
|
|
"""
|
|
|
|
def __init__(self, file, charset, globalSubrs, private, fdSelect, fdArray,
|
|
isCFF2=None):
|
|
self.globalSubrs = globalSubrs
|
|
if file is not None:
|
|
self.charStringsIndex = SubrsIndex(
|
|
file, globalSubrs, private, fdSelect, fdArray, isCFF2=isCFF2)
|
|
self.charStrings = charStrings = {}
|
|
for i in range(len(charset)):
|
|
charStrings[charset[i]] = i
|
|
# read from OTF file: charStrings.values() are indices into
|
|
# charStringsIndex.
|
|
self.charStringsAreIndexed = 1
|
|
else:
|
|
self.charStrings = {}
|
|
# read from ttx file: charStrings.values() are actual charstrings
|
|
self.charStringsAreIndexed = 0
|
|
self.private = private
|
|
if fdSelect is not None:
|
|
self.fdSelect = fdSelect
|
|
if fdArray is not None:
|
|
self.fdArray = fdArray
|
|
|
|
def keys(self):
|
|
return list(self.charStrings.keys())
|
|
|
|
def values(self):
|
|
if self.charStringsAreIndexed:
|
|
return self.charStringsIndex
|
|
else:
|
|
return list(self.charStrings.values())
|
|
|
|
def has_key(self, name):
|
|
return name in self.charStrings
|
|
|
|
__contains__ = has_key
|
|
|
|
def __len__(self):
|
|
return len(self.charStrings)
|
|
|
|
def __getitem__(self, name):
|
|
charString = self.charStrings[name]
|
|
if self.charStringsAreIndexed:
|
|
charString = self.charStringsIndex[charString]
|
|
return charString
|
|
|
|
def __setitem__(self, name, charString):
|
|
if self.charStringsAreIndexed:
|
|
index = self.charStrings[name]
|
|
self.charStringsIndex[index] = charString
|
|
else:
|
|
self.charStrings[name] = charString
|
|
|
|
def getItemAndSelector(self, name):
|
|
if self.charStringsAreIndexed:
|
|
index = self.charStrings[name]
|
|
return self.charStringsIndex.getItemAndSelector(index)
|
|
else:
|
|
if hasattr(self, 'fdArray'):
|
|
if hasattr(self, 'fdSelect'):
|
|
sel = self.charStrings[name].fdSelectIndex
|
|
else:
|
|
sel = 0
|
|
else:
|
|
sel = None
|
|
return self.charStrings[name], sel
|
|
|
|
def toXML(self, xmlWriter):
|
|
names = sorted(self.keys())
|
|
for name in names:
|
|
charStr, fdSelectIndex = self.getItemAndSelector(name)
|
|
if charStr.needsDecompilation():
|
|
raw = [("raw", 1)]
|
|
else:
|
|
raw = []
|
|
if fdSelectIndex is None:
|
|
xmlWriter.begintag("CharString", [('name', name)] + raw)
|
|
else:
|
|
xmlWriter.begintag(
|
|
"CharString",
|
|
[('name', name), ('fdSelectIndex', fdSelectIndex)] + raw)
|
|
xmlWriter.newline()
|
|
charStr.toXML(xmlWriter)
|
|
xmlWriter.endtag("CharString")
|
|
xmlWriter.newline()
|
|
|
|
def fromXML(self, name, attrs, content):
|
|
for element in content:
|
|
if isinstance(element, str):
|
|
continue
|
|
name, attrs, content = element
|
|
if name != "CharString":
|
|
continue
|
|
fdID = -1
|
|
if hasattr(self, "fdArray"):
|
|
try:
|
|
fdID = safeEval(attrs["fdSelectIndex"])
|
|
except KeyError:
|
|
fdID = 0
|
|
private = self.fdArray[fdID].Private
|
|
else:
|
|
private = self.private
|
|
|
|
glyphName = attrs["name"]
|
|
charStringClass = psCharStrings.T2CharString
|
|
charString = charStringClass(
|
|
private=private,
|
|
globalSubrs=self.globalSubrs)
|
|
charString.fromXML(name, attrs, content)
|
|
if fdID >= 0:
|
|
charString.fdSelectIndex = fdID
|
|
self[glyphName] = charString
|
|
|
|
|
|
def readCard8(file):
|
|
return byteord(file.read(1))
|
|
|
|
|
|
def readCard16(file):
|
|
value, = struct.unpack(">H", file.read(2))
|
|
return value
|
|
|
|
|
|
def readCard32(file):
|
|
value, = struct.unpack(">L", file.read(4))
|
|
return value
|
|
|
|
|
|
def writeCard8(file, value):
|
|
file.write(bytechr(value))
|
|
|
|
|
|
def writeCard16(file, value):
|
|
file.write(struct.pack(">H", value))
|
|
|
|
|
|
def writeCard32(file, value):
|
|
file.write(struct.pack(">L", value))
|
|
|
|
|
|
def packCard8(value):
|
|
return bytechr(value)
|
|
|
|
|
|
def packCard16(value):
|
|
return struct.pack(">H", value)
|
|
|
|
|
|
def packCard32(value):
|
|
return struct.pack(">L", value)
|
|
|
|
|
|
def buildOperatorDict(table):
|
|
d = {}
|
|
for op, name, arg, default, conv in table:
|
|
d[op] = (name, arg)
|
|
return d
|
|
|
|
|
|
def buildOpcodeDict(table):
|
|
d = {}
|
|
for op, name, arg, default, conv in table:
|
|
if isinstance(op, tuple):
|
|
op = bytechr(op[0]) + bytechr(op[1])
|
|
else:
|
|
op = bytechr(op)
|
|
d[name] = (op, 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 SimpleConverter(object):
|
|
|
|
def read(self, parent, value):
|
|
if not hasattr(parent, "file"):
|
|
return self._read(parent, value)
|
|
file = parent.file
|
|
pos = file.tell()
|
|
try:
|
|
return self._read(parent, value)
|
|
finally:
|
|
file.seek(pos)
|
|
|
|
def _read(self, parent, value):
|
|
return value
|
|
|
|
def write(self, parent, value):
|
|
return value
|
|
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
xmlWriter.simpletag(name, value=value)
|
|
xmlWriter.newline()
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
return attrs["value"]
|
|
|
|
|
|
class ASCIIConverter(SimpleConverter):
|
|
|
|
def _read(self, parent, value):
|
|
return tostr(value, encoding='ascii')
|
|
|
|
def write(self, parent, value):
|
|
return tobytes(value, encoding='ascii')
|
|
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
xmlWriter.simpletag(name, value=tostr(value, encoding="ascii"))
|
|
xmlWriter.newline()
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
return tobytes(attrs["value"], encoding=("ascii"))
|
|
|
|
|
|
class Latin1Converter(SimpleConverter):
|
|
|
|
def _read(self, parent, value):
|
|
return tostr(value, encoding='latin1')
|
|
|
|
def write(self, parent, value):
|
|
return tobytes(value, encoding='latin1')
|
|
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
value = tostr(value, encoding="latin1")
|
|
if name in ['Notice', 'Copyright']:
|
|
value = re.sub(r"[\r\n]\s+", " ", value)
|
|
xmlWriter.simpletag(name, value=value)
|
|
xmlWriter.newline()
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
return tobytes(attrs["value"], encoding=("latin1"))
|
|
|
|
|
|
def parseNum(s):
|
|
try:
|
|
value = int(s)
|
|
except:
|
|
value = float(s)
|
|
return value
|
|
|
|
|
|
def parseBlendList(s):
|
|
valueList = []
|
|
for element in s:
|
|
if isinstance(element, str):
|
|
continue
|
|
name, attrs, content = element
|
|
blendList = attrs["value"].split()
|
|
blendList = [eval(val) for val in blendList]
|
|
valueList.append(blendList)
|
|
if len(valueList) == 1:
|
|
valueList = valueList[0]
|
|
return valueList
|
|
|
|
|
|
class NumberConverter(SimpleConverter):
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
if isinstance(value, list):
|
|
xmlWriter.begintag(name)
|
|
xmlWriter.newline()
|
|
xmlWriter.indent()
|
|
blendValue = " ".join([str(val) for val in value])
|
|
xmlWriter.simpletag(kBlendDictOpName, value=blendValue)
|
|
xmlWriter.newline()
|
|
xmlWriter.dedent()
|
|
xmlWriter.endtag(name)
|
|
xmlWriter.newline()
|
|
else:
|
|
xmlWriter.simpletag(name, value=value)
|
|
xmlWriter.newline()
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
valueString = attrs.get("value", None)
|
|
if valueString is None:
|
|
value = parseBlendList(content)
|
|
else:
|
|
value = parseNum(attrs["value"])
|
|
return value
|
|
|
|
|
|
class ArrayConverter(SimpleConverter):
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
if value and isinstance(value[0], list):
|
|
xmlWriter.begintag(name)
|
|
xmlWriter.newline()
|
|
xmlWriter.indent()
|
|
for valueList in value:
|
|
blendValue = " ".join([str(val) for val in valueList])
|
|
xmlWriter.simpletag(kBlendDictOpName, value=blendValue)
|
|
xmlWriter.newline()
|
|
xmlWriter.dedent()
|
|
xmlWriter.endtag(name)
|
|
xmlWriter.newline()
|
|
else:
|
|
value = " ".join([str(val) for val in value])
|
|
xmlWriter.simpletag(name, value=value)
|
|
xmlWriter.newline()
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
valueString = attrs.get("value", None)
|
|
if valueString is None:
|
|
valueList = parseBlendList(content)
|
|
else:
|
|
values = valueString.split()
|
|
valueList = [parseNum(value) for value in values]
|
|
return valueList
|
|
|
|
|
|
class TableConverter(SimpleConverter):
|
|
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
xmlWriter.begintag(name)
|
|
xmlWriter.newline()
|
|
value.toXML(xmlWriter)
|
|
xmlWriter.endtag(name)
|
|
xmlWriter.newline()
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
ob = self.getClass()()
|
|
for element in content:
|
|
if isinstance(element, str):
|
|
continue
|
|
name, attrs, content = element
|
|
ob.fromXML(name, attrs, content)
|
|
return ob
|
|
|
|
|
|
class PrivateDictConverter(TableConverter):
|
|
|
|
def getClass(self):
|
|
return PrivateDict
|
|
|
|
def _read(self, parent, value):
|
|
size, offset = value
|
|
file = parent.file
|
|
isCFF2 = parent._isCFF2
|
|
try:
|
|
vstore = parent.vstore
|
|
except AttributeError:
|
|
vstore = None
|
|
priv = PrivateDict(
|
|
parent.strings, file, offset, isCFF2=isCFF2, vstore=vstore)
|
|
file.seek(offset)
|
|
data = file.read(size)
|
|
assert len(data) == size
|
|
priv.decompile(data)
|
|
return priv
|
|
|
|
def write(self, parent, value):
|
|
return (0, 0) # dummy value
|
|
|
|
|
|
class SubrsConverter(TableConverter):
|
|
|
|
def getClass(self):
|
|
return SubrsIndex
|
|
|
|
def _read(self, parent, value):
|
|
file = parent.file
|
|
isCFF2 = parent._isCFF2
|
|
file.seek(parent.offset + value) # Offset(self)
|
|
return SubrsIndex(file, isCFF2=isCFF2)
|
|
|
|
def write(self, parent, value):
|
|
return 0 # dummy value
|
|
|
|
|
|
class CharStringsConverter(TableConverter):
|
|
|
|
def _read(self, parent, value):
|
|
file = parent.file
|
|
isCFF2 = parent._isCFF2
|
|
charset = parent.charset
|
|
globalSubrs = parent.GlobalSubrs
|
|
if hasattr(parent, "FDArray"):
|
|
fdArray = parent.FDArray
|
|
if hasattr(parent, "FDSelect"):
|
|
fdSelect = parent.FDSelect
|
|
else:
|
|
fdSelect = None
|
|
private = None
|
|
else:
|
|
fdSelect, fdArray = None, None
|
|
private = parent.Private
|
|
file.seek(value) # Offset(0)
|
|
charStrings = CharStrings(
|
|
file, charset, globalSubrs, private, fdSelect, fdArray, isCFF2=isCFF2)
|
|
return charStrings
|
|
|
|
def write(self, parent, value):
|
|
return 0 # dummy value
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
if hasattr(parent, "FDArray"):
|
|
# if it is a CID-keyed font, then the private Dict is extracted from the
|
|
# parent.FDArray
|
|
fdArray = parent.FDArray
|
|
if hasattr(parent, "FDSelect"):
|
|
fdSelect = parent.FDSelect
|
|
else:
|
|
fdSelect = None
|
|
private = None
|
|
else:
|
|
# if it is a name-keyed font, then the private dict is in the top dict,
|
|
# and
|
|
# there is no fdArray.
|
|
private, fdSelect, fdArray = parent.Private, None, None
|
|
charStrings = CharStrings(
|
|
None, None, parent.GlobalSubrs, private, fdSelect, fdArray)
|
|
charStrings.fromXML(name, attrs, content)
|
|
return charStrings
|
|
|
|
|
|
class CharsetConverter(SimpleConverter):
|
|
def _read(self, parent, value):
|
|
isCID = hasattr(parent, "ROS")
|
|
if value > 2:
|
|
numGlyphs = parent.numGlyphs
|
|
file = parent.file
|
|
file.seek(value)
|
|
log.log(DEBUG, "loading charset at %s", value)
|
|
format = readCard8(file)
|
|
if format == 0:
|
|
charset = parseCharset0(numGlyphs, file, parent.strings, isCID)
|
|
elif format == 1 or format == 2:
|
|
charset = parseCharset(numGlyphs, file, parent.strings, isCID, format)
|
|
else:
|
|
raise NotImplementedError
|
|
assert len(charset) == numGlyphs
|
|
log.log(DEBUG, " charset end at %s", file.tell())
|
|
# make sure glyph names are unique
|
|
allNames = {}
|
|
newCharset = []
|
|
for glyphName in charset:
|
|
if glyphName in allNames:
|
|
# make up a new glyphName that's unique
|
|
n = allNames[glyphName]
|
|
while (glyphName + "#" + str(n)) in allNames:
|
|
n += 1
|
|
allNames[glyphName] = n + 1
|
|
glyphName = glyphName + "#" + str(n)
|
|
allNames[glyphName] = 1
|
|
newCharset.append(glyphName)
|
|
charset = newCharset
|
|
else: # offset == 0 -> no charset data.
|
|
if isCID or "CharStrings" not in parent.rawDict:
|
|
# We get here only when processing fontDicts from the FDArray of
|
|
# CFF-CID fonts. Only the real topDict references the chrset.
|
|
assert value == 0
|
|
charset = None
|
|
elif value == 0:
|
|
charset = cffISOAdobeStrings
|
|
elif value == 1:
|
|
charset = cffIExpertStrings
|
|
elif value == 2:
|
|
charset = cffExpertSubsetStrings
|
|
if charset and (len(charset) != parent.numGlyphs):
|
|
charset = charset[:parent.numGlyphs]
|
|
return charset
|
|
|
|
def write(self, parent, value):
|
|
return 0 # dummy value
|
|
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
# XXX only write charset when not in OT/TTX context, where we
|
|
# dump charset as a separate "GlyphOrder" table.
|
|
# # xmlWriter.simpletag("charset")
|
|
xmlWriter.comment("charset is dumped separately as the 'GlyphOrder' element")
|
|
xmlWriter.newline()
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
pass
|
|
|
|
|
|
class CharsetCompiler(object):
|
|
|
|
def __init__(self, strings, charset, parent):
|
|
assert charset[0] == '.notdef'
|
|
isCID = hasattr(parent.dictObj, "ROS")
|
|
data0 = packCharset0(charset, isCID, strings)
|
|
data = packCharset(charset, isCID, strings)
|
|
if len(data) < len(data0):
|
|
self.data = data
|
|
else:
|
|
self.data = data0
|
|
self.parent = parent
|
|
|
|
def setPos(self, pos, endPos):
|
|
self.parent.rawDict["charset"] = pos
|
|
|
|
def getDataLength(self):
|
|
return len(self.data)
|
|
|
|
def toFile(self, file):
|
|
file.write(self.data)
|
|
|
|
|
|
def getStdCharSet(charset):
|
|
# check to see if we can use a predefined charset value.
|
|
predefinedCharSetVal = None
|
|
predefinedCharSets = [
|
|
(cffISOAdobeStringCount, cffISOAdobeStrings, 0),
|
|
(cffExpertStringCount, cffIExpertStrings, 1),
|
|
(cffExpertSubsetStringCount, cffExpertSubsetStrings, 2)]
|
|
lcs = len(charset)
|
|
for cnt, pcs, csv in predefinedCharSets:
|
|
if predefinedCharSetVal is not None:
|
|
break
|
|
if lcs > cnt:
|
|
continue
|
|
predefinedCharSetVal = csv
|
|
for i in range(lcs):
|
|
if charset[i] != pcs[i]:
|
|
predefinedCharSetVal = None
|
|
break
|
|
return predefinedCharSetVal
|
|
|
|
|
|
def getCIDfromName(name, strings):
|
|
return int(name[3:])
|
|
|
|
|
|
def getSIDfromName(name, strings):
|
|
return strings.getSID(name)
|
|
|
|
|
|
def packCharset0(charset, isCID, strings):
|
|
fmt = 0
|
|
data = [packCard8(fmt)]
|
|
if isCID:
|
|
getNameID = getCIDfromName
|
|
else:
|
|
getNameID = getSIDfromName
|
|
|
|
for name in charset[1:]:
|
|
data.append(packCard16(getNameID(name, strings)))
|
|
return bytesjoin(data)
|
|
|
|
|
|
def packCharset(charset, isCID, strings):
|
|
fmt = 1
|
|
ranges = []
|
|
first = None
|
|
end = 0
|
|
if isCID:
|
|
getNameID = getCIDfromName
|
|
else:
|
|
getNameID = getSIDfromName
|
|
|
|
for name in charset[1:]:
|
|
SID = getNameID(name, strings)
|
|
if first is None:
|
|
first = SID
|
|
elif end + 1 != SID:
|
|
nLeft = end - first
|
|
if nLeft > 255:
|
|
fmt = 2
|
|
ranges.append((first, nLeft))
|
|
first = SID
|
|
end = SID
|
|
if end:
|
|
nLeft = end - first
|
|
if nLeft > 255:
|
|
fmt = 2
|
|
ranges.append((first, nLeft))
|
|
|
|
data = [packCard8(fmt)]
|
|
if fmt == 1:
|
|
nLeftFunc = packCard8
|
|
else:
|
|
nLeftFunc = packCard16
|
|
for first, nLeft in ranges:
|
|
data.append(packCard16(first) + nLeftFunc(nLeft))
|
|
return bytesjoin(data)
|
|
|
|
|
|
def parseCharset0(numGlyphs, file, strings, isCID):
|
|
charset = [".notdef"]
|
|
if isCID:
|
|
for i in range(numGlyphs - 1):
|
|
CID = readCard16(file)
|
|
charset.append("cid" + str(CID).zfill(5))
|
|
else:
|
|
for i in range(numGlyphs - 1):
|
|
SID = readCard16(file)
|
|
charset.append(strings[SID])
|
|
return charset
|
|
|
|
|
|
def parseCharset(numGlyphs, file, strings, isCID, fmt):
|
|
charset = ['.notdef']
|
|
count = 1
|
|
if fmt == 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" + str(CID).zfill(5))
|
|
else:
|
|
for SID in range(first, first + nLeft + 1):
|
|
charset.append(strings[SID])
|
|
count = count + nLeft + 1
|
|
return charset
|
|
|
|
|
|
class EncodingCompiler(object):
|
|
|
|
def __init__(self, strings, encoding, parent):
|
|
assert not isinstance(encoding, str)
|
|
data0 = packEncoding0(parent.dictObj.charset, encoding, parent.strings)
|
|
data1 = packEncoding1(parent.dictObj.charset, encoding, parent.strings)
|
|
if len(data0) < len(data1):
|
|
self.data = data0
|
|
else:
|
|
self.data = data1
|
|
self.parent = parent
|
|
|
|
def setPos(self, pos, endPos):
|
|
self.parent.rawDict["Encoding"] = pos
|
|
|
|
def getDataLength(self):
|
|
return len(self.data)
|
|
|
|
def toFile(self, file):
|
|
file.write(self.data)
|
|
|
|
|
|
class EncodingConverter(SimpleConverter):
|
|
|
|
def _read(self, parent, value):
|
|
if value == 0:
|
|
return "StandardEncoding"
|
|
elif value == 1:
|
|
return "ExpertEncoding"
|
|
else:
|
|
assert value > 1
|
|
file = parent.file
|
|
file.seek(value)
|
|
log.log(DEBUG, "loading Encoding at %s", value)
|
|
fmt = readCard8(file)
|
|
haveSupplement = fmt & 0x80
|
|
if haveSupplement:
|
|
raise NotImplementedError("Encoding supplements are not yet supported")
|
|
fmt = fmt & 0x7f
|
|
if fmt == 0:
|
|
encoding = parseEncoding0(parent.charset, file, haveSupplement,
|
|
parent.strings)
|
|
elif fmt == 1:
|
|
encoding = parseEncoding1(parent.charset, file, haveSupplement,
|
|
parent.strings)
|
|
return encoding
|
|
|
|
def write(self, parent, value):
|
|
if value == "StandardEncoding":
|
|
return 0
|
|
elif value == "ExpertEncoding":
|
|
return 1
|
|
return 0 # dummy value
|
|
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
if value in ("StandardEncoding", "ExpertEncoding"):
|
|
xmlWriter.simpletag(name, name=value)
|
|
xmlWriter.newline()
|
|
return
|
|
xmlWriter.begintag(name)
|
|
xmlWriter.newline()
|
|
for code in range(len(value)):
|
|
glyphName = value[code]
|
|
if glyphName != ".notdef":
|
|
xmlWriter.simpletag("map", code=hex(code), name=glyphName)
|
|
xmlWriter.newline()
|
|
xmlWriter.endtag(name)
|
|
xmlWriter.newline()
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
if "name" in attrs:
|
|
return attrs["name"]
|
|
encoding = [".notdef"] * 256
|
|
for element in content:
|
|
if isinstance(element, str):
|
|
continue
|
|
name, attrs, content = element
|
|
code = safeEval(attrs["code"])
|
|
glyphName = attrs["name"]
|
|
encoding[code] = glyphName
|
|
return encoding
|
|
|
|
|
|
def parseEncoding0(charset, file, haveSupplement, strings):
|
|
nCodes = readCard8(file)
|
|
encoding = [".notdef"] * 256
|
|
for glyphID in range(1, nCodes + 1):
|
|
code = readCard8(file)
|
|
if code != 0:
|
|
encoding[code] = charset[glyphID]
|
|
return encoding
|
|
|
|
|
|
def parseEncoding1(charset, file, haveSupplement, strings):
|
|
nRanges = readCard8(file)
|
|
encoding = [".notdef"] * 256
|
|
glyphID = 1
|
|
for i in range(nRanges):
|
|
code = readCard8(file)
|
|
nLeft = readCard8(file)
|
|
for glyphID in range(glyphID, glyphID + nLeft + 1):
|
|
encoding[code] = charset[glyphID]
|
|
code = code + 1
|
|
glyphID = glyphID + 1
|
|
return encoding
|
|
|
|
|
|
def packEncoding0(charset, encoding, strings):
|
|
fmt = 0
|
|
m = {}
|
|
for code in range(len(encoding)):
|
|
name = encoding[code]
|
|
if name != ".notdef":
|
|
m[name] = code
|
|
codes = []
|
|
for name in charset[1:]:
|
|
code = m.get(name)
|
|
codes.append(code)
|
|
|
|
while codes and codes[-1] is None:
|
|
codes.pop()
|
|
|
|
data = [packCard8(fmt), packCard8(len(codes))]
|
|
for code in codes:
|
|
if code is None:
|
|
code = 0
|
|
data.append(packCard8(code))
|
|
return bytesjoin(data)
|
|
|
|
|
|
def packEncoding1(charset, encoding, strings):
|
|
fmt = 1
|
|
m = {}
|
|
for code in range(len(encoding)):
|
|
name = encoding[code]
|
|
if name != ".notdef":
|
|
m[name] = code
|
|
ranges = []
|
|
first = None
|
|
end = 0
|
|
for name in charset[1:]:
|
|
code = m.get(name, -1)
|
|
if first is None:
|
|
first = code
|
|
elif end + 1 != code:
|
|
nLeft = end - first
|
|
ranges.append((first, nLeft))
|
|
first = code
|
|
end = code
|
|
nLeft = end - first
|
|
ranges.append((first, nLeft))
|
|
|
|
# remove unencoded glyphs at the end.
|
|
while ranges and ranges[-1][0] == -1:
|
|
ranges.pop()
|
|
|
|
data = [packCard8(fmt), packCard8(len(ranges))]
|
|
for first, nLeft in ranges:
|
|
if first == -1: # unencoded
|
|
first = 0
|
|
data.append(packCard8(first) + packCard8(nLeft))
|
|
return bytesjoin(data)
|
|
|
|
|
|
class FDArrayConverter(TableConverter):
|
|
|
|
def _read(self, parent, value):
|
|
try:
|
|
vstore = parent.VarStore
|
|
except AttributeError:
|
|
vstore = None
|
|
file = parent.file
|
|
isCFF2 = parent._isCFF2
|
|
file.seek(value)
|
|
fdArray = FDArrayIndex(file, isCFF2=isCFF2)
|
|
fdArray.vstore = vstore
|
|
fdArray.strings = parent.strings
|
|
fdArray.GlobalSubrs = parent.GlobalSubrs
|
|
return fdArray
|
|
|
|
def write(self, parent, value):
|
|
return 0 # dummy value
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
fdArray = FDArrayIndex()
|
|
for element in content:
|
|
if isinstance(element, str):
|
|
continue
|
|
name, attrs, content = element
|
|
fdArray.fromXML(name, attrs, content)
|
|
return fdArray
|
|
|
|
|
|
class FDSelectConverter(SimpleConverter):
|
|
|
|
def _read(self, parent, value):
|
|
file = parent.file
|
|
file.seek(value)
|
|
fdSelect = FDSelect(file, parent.numGlyphs)
|
|
return fdSelect
|
|
|
|
def write(self, parent, value):
|
|
return 0 # dummy value
|
|
|
|
# The FDSelect glyph data is written out to XML in the charstring keys,
|
|
# so we write out only the format selector
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
xmlWriter.simpletag(name, [('format', value.format)])
|
|
xmlWriter.newline()
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
fmt = safeEval(attrs["format"])
|
|
file = None
|
|
numGlyphs = None
|
|
fdSelect = FDSelect(file, numGlyphs, fmt)
|
|
return fdSelect
|
|
|
|
|
|
class VarStoreConverter(SimpleConverter):
|
|
|
|
def _read(self, parent, value):
|
|
file = parent.file
|
|
file.seek(value)
|
|
varStore = VarStoreData(file)
|
|
varStore.decompile()
|
|
return varStore
|
|
|
|
def write(self, parent, value):
|
|
return 0 # dummy value
|
|
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
value.writeXML(xmlWriter, name)
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
varStore = VarStoreData()
|
|
varStore.xmlRead(name, attrs, content, parent)
|
|
return varStore
|
|
|
|
|
|
def packFDSelect0(fdSelectArray):
|
|
fmt = 0
|
|
data = [packCard8(fmt)]
|
|
for index in fdSelectArray:
|
|
data.append(packCard8(index))
|
|
return bytesjoin(data)
|
|
|
|
|
|
def packFDSelect3(fdSelectArray):
|
|
fmt = 3
|
|
fdRanges = []
|
|
lenArray = len(fdSelectArray)
|
|
lastFDIndex = -1
|
|
for i in range(lenArray):
|
|
fdIndex = fdSelectArray[i]
|
|
if lastFDIndex != fdIndex:
|
|
fdRanges.append([i, fdIndex])
|
|
lastFDIndex = fdIndex
|
|
sentinelGID = i + 1
|
|
|
|
data = [packCard8(fmt)]
|
|
data.append(packCard16(len(fdRanges)))
|
|
for fdRange in fdRanges:
|
|
data.append(packCard16(fdRange[0]))
|
|
data.append(packCard8(fdRange[1]))
|
|
data.append(packCard16(sentinelGID))
|
|
return bytesjoin(data)
|
|
|
|
|
|
def packFDSelect4(fdSelectArray):
|
|
fmt = 4
|
|
fdRanges = []
|
|
lenArray = len(fdSelectArray)
|
|
lastFDIndex = -1
|
|
for i in range(lenArray):
|
|
fdIndex = fdSelectArray[i]
|
|
if lastFDIndex != fdIndex:
|
|
fdRanges.append([i, fdIndex])
|
|
lastFDIndex = fdIndex
|
|
sentinelGID = i + 1
|
|
|
|
data = [packCard8(fmt)]
|
|
data.append(packCard32(len(fdRanges)))
|
|
for fdRange in fdRanges:
|
|
data.append(packCard32(fdRange[0]))
|
|
data.append(packCard16(fdRange[1]))
|
|
data.append(packCard32(sentinelGID))
|
|
return bytesjoin(data)
|
|
|
|
|
|
class FDSelectCompiler(object):
|
|
|
|
def __init__(self, fdSelect, parent):
|
|
fmt = fdSelect.format
|
|
fdSelectArray = fdSelect.gidArray
|
|
if fmt == 0:
|
|
self.data = packFDSelect0(fdSelectArray)
|
|
elif fmt == 3:
|
|
self.data = packFDSelect3(fdSelectArray)
|
|
elif fmt == 4:
|
|
self.data = packFDSelect4(fdSelectArray)
|
|
else:
|
|
# choose smaller of the two formats
|
|
data0 = packFDSelect0(fdSelectArray)
|
|
data3 = packFDSelect3(fdSelectArray)
|
|
if len(data0) < len(data3):
|
|
self.data = data0
|
|
fdSelect.format = 0
|
|
else:
|
|
self.data = data3
|
|
fdSelect.format = 3
|
|
|
|
self.parent = parent
|
|
|
|
def setPos(self, pos, endPos):
|
|
self.parent.rawDict["FDSelect"] = pos
|
|
|
|
def getDataLength(self):
|
|
return len(self.data)
|
|
|
|
def toFile(self, file):
|
|
file.write(self.data)
|
|
|
|
|
|
class VarStoreCompiler(object):
|
|
|
|
def __init__(self, varStoreData, parent):
|
|
self.parent = parent
|
|
if not varStoreData.data:
|
|
varStoreData.compile()
|
|
data = [
|
|
packCard16(len(varStoreData.data)),
|
|
varStoreData.data
|
|
]
|
|
self.data = bytesjoin(data)
|
|
|
|
def setPos(self, pos, endPos):
|
|
self.parent.rawDict["VarStore"] = pos
|
|
|
|
def getDataLength(self):
|
|
return len(self.data)
|
|
|
|
def toFile(self, file):
|
|
file.write(self.data)
|
|
|
|
|
|
class ROSConverter(SimpleConverter):
|
|
|
|
def xmlWrite(self, xmlWriter, name, value):
|
|
registry, order, supplement = value
|
|
xmlWriter.simpletag(
|
|
name,
|
|
[
|
|
('Registry', tostr(registry)),
|
|
('Order', tostr(order)),
|
|
('Supplement', supplement)
|
|
])
|
|
xmlWriter.newline()
|
|
|
|
def xmlRead(self, name, attrs, content, parent):
|
|
return (attrs['Registry'], attrs['Order'], safeEval(attrs['Supplement']))
|
|
|
|
topDictOperators = [
|
|
# opcode name argument type default converter
|
|
(25, 'maxstack', 'number', None, None),
|
|
((12, 30), 'ROS', ('SID', 'SID', 'number'), None, ROSConverter()),
|
|
((12, 20), 'SyntheticBase', 'number', None, None),
|
|
(0, 'version', 'SID', None, None),
|
|
(1, 'Notice', 'SID', None, Latin1Converter()),
|
|
((12, 0), 'Copyright', 'SID', None, Latin1Converter()),
|
|
(2, 'FullName', 'SID', None, None),
|
|
((12, 38), 'FontName', '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', -100, 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),
|
|
((12, 21), 'PostScript', 'SID', None, None),
|
|
((12, 22), 'BaseFontName', 'SID', None, None),
|
|
((12, 23), 'BaseFontBlend', 'delta', 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),
|
|
(15, 'charset', 'number', None, CharsetConverter()),
|
|
((12, 35), 'UIDBase', 'number', None, None),
|
|
(16, 'Encoding', 'number', 0, EncodingConverter()),
|
|
(18, 'Private', ('number', 'number'), None, PrivateDictConverter()),
|
|
((12, 37), 'FDSelect', 'number', None, FDSelectConverter()),
|
|
((12, 36), 'FDArray', 'number', None, FDArrayConverter()),
|
|
(17, 'CharStrings', 'number', None, CharStringsConverter()),
|
|
(24, 'VarStore', 'number', None, VarStoreConverter()),
|
|
]
|
|
|
|
topDictOperators2 = [
|
|
# opcode name argument type default converter
|
|
(25, 'maxstack', 'number', None, None),
|
|
((12, 7), 'FontMatrix', 'array', [0.001, 0, 0, 0.001, 0, 0], None),
|
|
((12, 37), 'FDSelect', 'number', None, FDSelectConverter()),
|
|
((12, 36), 'FDArray', 'number', None, FDArrayConverter()),
|
|
(17, 'CharStrings', 'number', None, CharStringsConverter()),
|
|
(24, 'VarStore', 'number', None, VarStoreConverter()),
|
|
]
|
|
|
|
# Note! FDSelect and FDArray must both preceed CharStrings in the output XML build order,
|
|
# in order for the font to compile back from xml.
|
|
|
|
kBlendDictOpName = "blend"
|
|
blendOp = 23
|
|
|
|
privateDictOperators = [
|
|
# opcode name argument type default converter
|
|
(22, "vsindex", 'number', None, None),
|
|
(blendOp, kBlendDictOpName, 'blendList', None, None), # This is for reading to/from XML: it not written to CFF.
|
|
(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, 15), 'ForceBoldThreshold', 'number', None, None), # deprecated
|
|
((12, 16), 'lenIV', 'number', None, None), # deprecated
|
|
((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()),
|
|
]
|
|
|
|
privateDictOperators2 = [
|
|
# opcode name argument type default converter
|
|
(22, "vsindex", 'number', None, None),
|
|
(blendOp, kBlendDictOpName, 'blendList', None, None), # This is for reading to/from XML: it not written to CFF.
|
|
(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, 17), 'LanguageGroup', 'number', 0, None),
|
|
((12, 18), 'ExpansionFactor', 'number', 0.06, None),
|
|
(19, 'Subrs', 'number', None, SubrsConverter()),
|
|
]
|
|
|
|
|
|
def addConverters(table):
|
|
for i in range(len(table)):
|
|
op, name, arg, default, conv = table[i]
|
|
if conv is not None:
|
|
continue
|
|
if arg in ("delta", "array"):
|
|
conv = ArrayConverter()
|
|
elif arg == "number":
|
|
conv = NumberConverter()
|
|
elif arg == "SID":
|
|
conv = ASCIIConverter()
|
|
elif arg == 'blendList':
|
|
conv = None
|
|
else:
|
|
assert False
|
|
table[i] = op, name, arg, default, conv
|
|
|
|
|
|
addConverters(privateDictOperators)
|
|
addConverters(topDictOperators)
|
|
|
|
|
|
class TopDictDecompiler(psCharStrings.DictDecompiler):
|
|
operators = buildOperatorDict(topDictOperators)
|
|
|
|
|
|
class PrivateDictDecompiler(psCharStrings.DictDecompiler):
|
|
operators = buildOperatorDict(privateDictOperators)
|
|
|
|
|
|
class DictCompiler(object):
|
|
maxBlendStack = 0
|
|
|
|
def __init__(self, dictObj, strings, parent, isCFF2=None):
|
|
if strings:
|
|
assert isinstance(strings, IndexedStrings)
|
|
if isCFF2 is None and hasattr(parent, "isCFF2"):
|
|
isCFF2 = parent.isCFF2
|
|
assert isCFF2 is not None
|
|
self.isCFF2 = isCFF2
|
|
self.dictObj = dictObj
|
|
self.strings = strings
|
|
self.parent = parent
|
|
rawDict = {}
|
|
for name in dictObj.order:
|
|
value = getattr(dictObj, name, None)
|
|
if value is None:
|
|
continue
|
|
conv = dictObj.converters[name]
|
|
value = conv.write(dictObj, value)
|
|
if value == dictObj.defaults.get(name):
|
|
continue
|
|
rawDict[name] = value
|
|
self.rawDict = rawDict
|
|
|
|
def setPos(self, pos, endPos):
|
|
pass
|
|
|
|
def getDataLength(self):
|
|
return len(self.compile("getDataLength"))
|
|
|
|
def compile(self, reason):
|
|
log.log(DEBUG, "-- compiling %s for %s", self.__class__.__name__, reason)
|
|
rawDict = self.rawDict
|
|
data = []
|
|
for name in self.dictObj.order:
|
|
value = rawDict.get(name)
|
|
if value is None:
|
|
continue
|
|
op, argType = self.opcodes[name]
|
|
if isinstance(argType, tuple):
|
|
l = len(argType)
|
|
assert len(value) == l, "value doesn't match arg type"
|
|
for i in range(l):
|
|
arg = argType[i]
|
|
v = value[i]
|
|
arghandler = getattr(self, "arg_" + arg)
|
|
data.append(arghandler(v))
|
|
else:
|
|
arghandler = getattr(self, "arg_" + argType)
|
|
data.append(arghandler(value))
|
|
data.append(op)
|
|
data = bytesjoin(data)
|
|
return data
|
|
|
|
def toFile(self, file):
|
|
data = self.compile("toFile")
|
|
file.write(data)
|
|
|
|
def arg_number(self, num):
|
|
if isinstance(num, list):
|
|
data = [encodeNumber(val) for val in num]
|
|
data.append(encodeNumber(1))
|
|
data.append(bytechr(blendOp))
|
|
datum = bytesjoin(data)
|
|
else:
|
|
datum = encodeNumber(num)
|
|
return datum
|
|
|
|
def arg_SID(self, s):
|
|
return psCharStrings.encodeIntCFF(self.strings.getSID(s))
|
|
|
|
def arg_array(self, value):
|
|
data = []
|
|
for num in value:
|
|
data.append(self.arg_number(num))
|
|
return bytesjoin(data)
|
|
|
|
def arg_delta(self, value):
|
|
if not value:
|
|
return b""
|
|
val0 = value[0]
|
|
if isinstance(val0, list):
|
|
data = self.arg_delta_blend(value)
|
|
else:
|
|
out = []
|
|
last = 0
|
|
for v in value:
|
|
out.append(v - last)
|
|
last = v
|
|
data = []
|
|
for num in out:
|
|
data.append(encodeNumber(num))
|
|
return bytesjoin(data)
|
|
|
|
|
|
def arg_delta_blend(self, value):
|
|
"""A delta list with blend lists has to be *all* blend lists.
|
|
|
|
The value is a list is arranged as follows::
|
|
|
|
[
|
|
[V0, d0..dn]
|
|
[V1, d0..dn]
|
|
...
|
|
[Vm, d0..dn]
|
|
]
|
|
|
|
``V`` is the absolute coordinate value from the default font, and ``d0-dn``
|
|
are the delta values from the *n* regions. Each ``V`` is an absolute
|
|
coordinate from the default font.
|
|
|
|
We want to return a list::
|
|
|
|
[
|
|
[v0, v1..vm]
|
|
[d0..dn]
|
|
...
|
|
[d0..dn]
|
|
numBlends
|
|
blendOp
|
|
]
|
|
|
|
where each ``v`` is relative to the previous default font value.
|
|
"""
|
|
numMasters = len(value[0])
|
|
numBlends = len(value)
|
|
numStack = (numBlends * numMasters) + 1
|
|
if numStack > self.maxBlendStack:
|
|
# Figure out the max number of value we can blend
|
|
# and divide this list up into chunks of that size.
|
|
|
|
numBlendValues = int((self.maxBlendStack - 1) / numMasters)
|
|
out = []
|
|
while True:
|
|
numVal = min(len(value), numBlendValues)
|
|
if numVal == 0:
|
|
break
|
|
valList = value[0:numVal]
|
|
out1 = self.arg_delta_blend(valList)
|
|
out.extend(out1)
|
|
value = value[numVal:]
|
|
else:
|
|
firstList = [0] * numBlends
|
|
deltaList = [None] * numBlends
|
|
i = 0
|
|
prevVal = 0
|
|
while i < numBlends:
|
|
# For PrivateDict BlueValues, the default font
|
|
# values are absolute, not relative.
|
|
# Must convert these back to relative coordinates
|
|
# befor writing to CFF2.
|
|
defaultValue = value[i][0]
|
|
firstList[i] = defaultValue - prevVal
|
|
prevVal = defaultValue
|
|
deltaList[i] = value[i][1:]
|
|
i += 1
|
|
|
|
relValueList = firstList
|
|
for blendList in deltaList:
|
|
relValueList.extend(blendList)
|
|
out = [encodeNumber(val) for val in relValueList]
|
|
out.append(encodeNumber(numBlends))
|
|
out.append(bytechr(blendOp))
|
|
return out
|
|
|
|
|
|
def encodeNumber(num):
|
|
if isinstance(num, float):
|
|
return psCharStrings.encodeFloat(num)
|
|
else:
|
|
return psCharStrings.encodeIntCFF(num)
|
|
|
|
|
|
class TopDictCompiler(DictCompiler):
|
|
|
|
opcodes = buildOpcodeDict(topDictOperators)
|
|
|
|
def getChildren(self, strings):
|
|
isCFF2 = self.isCFF2
|
|
children = []
|
|
if self.dictObj.cff2GetGlyphOrder is None:
|
|
if hasattr(self.dictObj, "charset") and self.dictObj.charset:
|
|
if hasattr(self.dictObj, "ROS"): # aka isCID
|
|
charsetCode = None
|
|
else:
|
|
charsetCode = getStdCharSet(self.dictObj.charset)
|
|
if charsetCode is None:
|
|
children.append(CharsetCompiler(strings, self.dictObj.charset, self))
|
|
else:
|
|
self.rawDict["charset"] = charsetCode
|
|
if hasattr(self.dictObj, "Encoding") and self.dictObj.Encoding:
|
|
encoding = self.dictObj.Encoding
|
|
if not isinstance(encoding, str):
|
|
children.append(EncodingCompiler(strings, encoding, self))
|
|
else:
|
|
if hasattr(self.dictObj, "VarStore"):
|
|
varStoreData = self.dictObj.VarStore
|
|
varStoreComp = VarStoreCompiler(varStoreData, self)
|
|
children.append(varStoreComp)
|
|
if hasattr(self.dictObj, "FDSelect"):
|
|
# I have not yet supported merging a ttx CFF-CID font, as there are
|
|
# interesting issues about merging the FDArrays. Here I assume that
|
|
# either the font was read from XML, and the FDSelect indices are all
|
|
# in the charstring data, or the FDSelect array is already fully defined.
|
|
fdSelect = self.dictObj.FDSelect
|
|
# probably read in from XML; assume fdIndex in CharString data
|
|
if len(fdSelect) == 0:
|
|
charStrings = self.dictObj.CharStrings
|
|
for name in self.dictObj.charset:
|
|
fdSelect.append(charStrings[name].fdSelectIndex)
|
|
fdSelectComp = FDSelectCompiler(fdSelect, self)
|
|
children.append(fdSelectComp)
|
|
if hasattr(self.dictObj, "CharStrings"):
|
|
items = []
|
|
charStrings = self.dictObj.CharStrings
|
|
for name in self.dictObj.charset:
|
|
items.append(charStrings[name])
|
|
charStringsComp = CharStringsCompiler(
|
|
items, strings, self, isCFF2=isCFF2)
|
|
children.append(charStringsComp)
|
|
if hasattr(self.dictObj, "FDArray"):
|
|
# I have not yet supported merging a ttx CFF-CID font, as there are
|
|
# interesting issues about merging the FDArrays. Here I assume that the
|
|
# FDArray info is correct and complete.
|
|
fdArrayIndexComp = self.dictObj.FDArray.getCompiler(strings, self)
|
|
children.append(fdArrayIndexComp)
|
|
children.extend(fdArrayIndexComp.getChildren(strings))
|
|
if hasattr(self.dictObj, "Private"):
|
|
privComp = self.dictObj.Private.getCompiler(strings, self)
|
|
children.append(privComp)
|
|
children.extend(privComp.getChildren(strings))
|
|
return children
|
|
|
|
|
|
class FontDictCompiler(DictCompiler):
|
|
opcodes = buildOpcodeDict(topDictOperators)
|
|
|
|
def __init__(self, dictObj, strings, parent, isCFF2=None):
|
|
super(FontDictCompiler, self).__init__(dictObj, strings, parent, isCFF2=isCFF2)
|
|
#
|
|
# We now take some effort to detect if there were any key/value pairs
|
|
# supplied that were ignored in the FontDict context, and issue a warning
|
|
# for those cases.
|
|
#
|
|
ignoredNames = []
|
|
dictObj = self.dictObj
|
|
for name in sorted(set(dictObj.converters) - set(dictObj.order)):
|
|
if name in dictObj.rawDict:
|
|
# The font was directly read from binary. In this
|
|
# case, we want to report *all* "useless" key/value
|
|
# pairs that are in the font, not just the ones that
|
|
# are different from the default.
|
|
ignoredNames.append(name)
|
|
else:
|
|
# The font was probably read from a TTX file. We only
|
|
# warn about keys whos value is not the default. The
|
|
# ones that have the default value will not be written
|
|
# to binary anyway.
|
|
default = dictObj.defaults.get(name)
|
|
if default is not None:
|
|
conv = dictObj.converters[name]
|
|
default = conv.read(dictObj, default)
|
|
if getattr(dictObj, name, None) != default:
|
|
ignoredNames.append(name)
|
|
if ignoredNames:
|
|
log.warning(
|
|
"Some CFF FDArray/FontDict keys were ignored upon compile: " +
|
|
" ".join(sorted(ignoredNames)))
|
|
|
|
def getChildren(self, strings):
|
|
children = []
|
|
if hasattr(self.dictObj, "Private"):
|
|
privComp = self.dictObj.Private.getCompiler(strings, self)
|
|
children.append(privComp)
|
|
children.extend(privComp.getChildren(strings))
|
|
return children
|
|
|
|
|
|
class PrivateDictCompiler(DictCompiler):
|
|
|
|
maxBlendStack = maxStackLimit
|
|
opcodes = buildOpcodeDict(privateDictOperators)
|
|
|
|
def setPos(self, pos, endPos):
|
|
size = endPos - pos
|
|
self.parent.rawDict["Private"] = size, pos
|
|
self.pos = pos
|
|
|
|
def getChildren(self, strings):
|
|
children = []
|
|
if hasattr(self.dictObj, "Subrs"):
|
|
children.append(self.dictObj.Subrs.getCompiler(strings, self))
|
|
return children
|
|
|
|
|
|
class BaseDict(object):
|
|
|
|
def __init__(self, strings=None, file=None, offset=None, isCFF2=None):
|
|
assert (isCFF2 is None) == (file is None)
|
|
self.rawDict = {}
|
|
self.skipNames = []
|
|
self.strings = strings
|
|
if file is None:
|
|
return
|
|
self._isCFF2 = isCFF2
|
|
self.file = file
|
|
if offset is not None:
|
|
log.log(DEBUG, "loading %s at %s", self.__class__.__name__, offset)
|
|
self.offset = offset
|
|
|
|
def decompile(self, data):
|
|
log.log(DEBUG, " length %s is %d", self.__class__.__name__, len(data))
|
|
dec = self.decompilerClass(self.strings, self)
|
|
dec.decompile(data)
|
|
self.rawDict = dec.getDict()
|
|
self.postDecompile()
|
|
|
|
def postDecompile(self):
|
|
pass
|
|
|
|
def getCompiler(self, strings, parent, isCFF2=None):
|
|
return self.compilerClass(self, strings, parent, isCFF2=isCFF2)
|
|
|
|
def __getattr__(self, name):
|
|
if name[:2] == name[-2:] == "__":
|
|
# to make deepcopy() and pickle.load() work, we need to signal with
|
|
# AttributeError that dunder methods like '__deepcopy__' or '__getstate__'
|
|
# aren't implemented. For more details, see:
|
|
# https://github.com/fonttools/fonttools/pull/1488
|
|
raise AttributeError(name)
|
|
value = self.rawDict.get(name, None)
|
|
if value is None:
|
|
value = self.defaults.get(name)
|
|
if value is None:
|
|
raise AttributeError(name)
|
|
conv = self.converters[name]
|
|
value = conv.read(self, value)
|
|
setattr(self, name, value)
|
|
return value
|
|
|
|
def toXML(self, xmlWriter):
|
|
for name in self.order:
|
|
if name in self.skipNames:
|
|
continue
|
|
value = getattr(self, name, None)
|
|
# XXX For "charset" we never skip calling xmlWrite even if the
|
|
# value is None, so we always write the following XML comment:
|
|
#
|
|
# <!-- charset is dumped separately as the 'GlyphOrder' element -->
|
|
#
|
|
# Charset is None when 'CFF ' table is imported from XML into an
|
|
# empty TTFont(). By writing this comment all the time, we obtain
|
|
# the same XML output whether roundtripping XML-to-XML or
|
|
# dumping binary-to-XML
|
|
if value is None and name != "charset":
|
|
continue
|
|
conv = self.converters[name]
|
|
conv.xmlWrite(xmlWriter, name, value)
|
|
ignoredNames = set(self.rawDict) - set(self.order)
|
|
if ignoredNames:
|
|
xmlWriter.comment(
|
|
"some keys were ignored: %s" % " ".join(sorted(ignoredNames)))
|
|
xmlWriter.newline()
|
|
|
|
def fromXML(self, name, attrs, content):
|
|
conv = self.converters[name]
|
|
value = conv.xmlRead(name, attrs, content, self)
|
|
setattr(self, name, value)
|
|
|
|
|
|
class TopDict(BaseDict):
|
|
"""The ``TopDict`` represents the top-level dictionary holding font
|
|
information. CFF2 tables contain a restricted set of top-level entries
|
|
as described `here <https://docs.microsoft.com/en-us/typography/opentype/spec/cff2#7-top-dict-data>`_,
|
|
but CFF tables may contain a wider range of information. This information
|
|
can be accessed through attributes or through the dictionary returned
|
|
through the ``rawDict`` property:
|
|
|
|
.. code:: python
|
|
|
|
font = tt["CFF "].cff[0]
|
|
font.FamilyName
|
|
# 'Linux Libertine O'
|
|
font.rawDict["FamilyName"]
|
|
# 'Linux Libertine O'
|
|
|
|
More information is available in the CFF file's private dictionary, accessed
|
|
via the ``Private`` property:
|
|
|
|
.. code:: python
|
|
|
|
tt["CFF "].cff[0].Private.BlueValues
|
|
# [-15, 0, 515, 515, 666, 666]
|
|
|
|
"""
|
|
|
|
defaults = buildDefaults(topDictOperators)
|
|
converters = buildConverters(topDictOperators)
|
|
compilerClass = TopDictCompiler
|
|
order = buildOrder(topDictOperators)
|
|
decompilerClass = TopDictDecompiler
|
|
|
|
def __init__(self, strings=None, file=None, offset=None,
|
|
GlobalSubrs=None, cff2GetGlyphOrder=None, isCFF2=None):
|
|
super(TopDict, self).__init__(strings, file, offset, isCFF2=isCFF2)
|
|
self.cff2GetGlyphOrder = cff2GetGlyphOrder
|
|
self.GlobalSubrs = GlobalSubrs
|
|
if isCFF2:
|
|
self.defaults = buildDefaults(topDictOperators2)
|
|
self.charset = cff2GetGlyphOrder()
|
|
self.order = buildOrder(topDictOperators2)
|
|
else:
|
|
self.defaults = buildDefaults(topDictOperators)
|
|
self.order = buildOrder(topDictOperators)
|
|
|
|
def getGlyphOrder(self):
|
|
"""Returns a list of glyph names in the CFF font."""
|
|
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)
|
|
if self._isCFF2:
|
|
self.numGlyphs = readCard32(self.file)
|
|
else:
|
|
self.numGlyphs = readCard16(self.file)
|
|
|
|
def toXML(self, xmlWriter):
|
|
if hasattr(self, "CharStrings"):
|
|
self.decompileAllCharStrings()
|
|
if hasattr(self, "ROS"):
|
|
self.skipNames = ['Encoding']
|
|
if not hasattr(self, "ROS") or not hasattr(self, "CharStrings"):
|
|
# these values have default values, but I only want them to show up
|
|
# in CID fonts.
|
|
self.skipNames = [
|
|
'CIDFontVersion', 'CIDFontRevision', 'CIDFontType', 'CIDCount']
|
|
BaseDict.toXML(self, xmlWriter)
|
|
|
|
def decompileAllCharStrings(self):
|
|
# Make sure that all the Private Dicts have been instantiated.
|
|
for i, charString in enumerate(self.CharStrings.values()):
|
|
try:
|
|
charString.decompile()
|
|
except:
|
|
log.error("Error in charstring %s", i)
|
|
raise
|
|
|
|
def recalcFontBBox(self):
|
|
fontBBox = None
|
|
for charString in self.CharStrings.values():
|
|
bounds = charString.calcBounds(self.CharStrings)
|
|
if bounds is not None:
|
|
if fontBBox is not None:
|
|
fontBBox = unionRect(fontBBox, bounds)
|
|
else:
|
|
fontBBox = bounds
|
|
|
|
if fontBBox is None:
|
|
self.FontBBox = self.defaults['FontBBox'][:]
|
|
else:
|
|
self.FontBBox = list(intRect(fontBBox))
|
|
|
|
|
|
class FontDict(BaseDict):
|
|
#
|
|
# Since fonttools used to pass a lot of fields that are not relevant in the FDArray
|
|
# FontDict, there are 'ttx' files in the wild that contain all these. These got in
|
|
# the ttx files because fonttools writes explicit values for all the TopDict default
|
|
# values. These are not actually illegal in the context of an FDArray FontDict - you
|
|
# can legally, per spec, put any arbitrary key/value pair in a FontDict - but are
|
|
# useless since current major company CFF interpreters ignore anything but the set
|
|
# listed in this file. So, we just silently skip them. An exception is Weight: this
|
|
# is not used by any interpreter, but some foundries have asked that this be
|
|
# supported in FDArray FontDicts just to preserve information about the design when
|
|
# the font is being inspected.
|
|
#
|
|
# On top of that, there are fonts out there that contain such useless FontDict values.
|
|
#
|
|
# By subclassing TopDict, we *allow* all key/values from TopDict, both when reading
|
|
# from binary or when reading from XML, but by overriding `order` with a limited
|
|
# list of names, we ensure that only the useful names ever get exported to XML and
|
|
# ever get compiled into the binary font.
|
|
#
|
|
# We override compilerClass so we can warn about "useless" key/value pairs, either
|
|
# from the original binary font or from TTX input.
|
|
#
|
|
# See:
|
|
# - https://github.com/fonttools/fonttools/issues/740
|
|
# - https://github.com/fonttools/fonttools/issues/601
|
|
# - https://github.com/adobe-type-tools/afdko/issues/137
|
|
#
|
|
defaults = {}
|
|
converters = buildConverters(topDictOperators)
|
|
compilerClass = FontDictCompiler
|
|
orderCFF = ['FontName', 'FontMatrix', 'Weight', 'Private']
|
|
orderCFF2 = ['Private']
|
|
decompilerClass = TopDictDecompiler
|
|
|
|
def __init__(self, strings=None, file=None, offset=None,
|
|
GlobalSubrs=None, isCFF2=None, vstore=None):
|
|
super(FontDict, self).__init__(strings, file, offset, isCFF2=isCFF2)
|
|
self.vstore = vstore
|
|
self.setCFF2(isCFF2)
|
|
|
|
def setCFF2(self, isCFF2):
|
|
# isCFF2 may be None.
|
|
if isCFF2:
|
|
self.order = self.orderCFF2
|
|
self._isCFF2 = True
|
|
else:
|
|
self.order = self.orderCFF
|
|
self._isCFF2 = False
|
|
|
|
|
|
class PrivateDict(BaseDict):
|
|
defaults = buildDefaults(privateDictOperators)
|
|
converters = buildConverters(privateDictOperators)
|
|
order = buildOrder(privateDictOperators)
|
|
decompilerClass = PrivateDictDecompiler
|
|
compilerClass = PrivateDictCompiler
|
|
|
|
def __init__(self, strings=None, file=None, offset=None, isCFF2=None,
|
|
vstore=None):
|
|
super(PrivateDict, self).__init__(strings, file, offset, isCFF2=isCFF2)
|
|
self.vstore = vstore
|
|
if isCFF2:
|
|
self.defaults = buildDefaults(privateDictOperators2)
|
|
self.order = buildOrder(privateDictOperators2)
|
|
# Provide dummy values. This avoids needing to provide
|
|
# an isCFF2 state in a lot of places.
|
|
self.nominalWidthX = self.defaultWidthX = None
|
|
else:
|
|
self.defaults = buildDefaults(privateDictOperators)
|
|
self.order = buildOrder(privateDictOperators)
|
|
|
|
@property
|
|
def in_cff2(self):
|
|
return self._isCFF2
|
|
|
|
def getNumRegions(self, vi=None): # called from misc/psCharStrings.py
|
|
# if getNumRegions is being called, we can assume that VarStore exists.
|
|
if vi is None:
|
|
if hasattr(self, 'vsindex'):
|
|
vi = self.vsindex
|
|
else:
|
|
vi = 0
|
|
numRegions = self.vstore.getNumRegions(vi)
|
|
return numRegions
|
|
|
|
|
|
class IndexedStrings(object):
|
|
|
|
"""SID -> string mapping."""
|
|
|
|
def __init__(self, file=None):
|
|
if file is None:
|
|
strings = []
|
|
else:
|
|
strings = [
|
|
tostr(s, encoding="latin1")
|
|
for s in Index(file, isCFF2=False)
|
|
]
|
|
self.strings = strings
|
|
|
|
def getCompiler(self):
|
|
return IndexedStringsCompiler(self, None, self, isCFF2=False)
|
|
|
|
def __len__(self):
|
|
return len(self.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()
|
|
s = tostr(s, encoding="latin1")
|
|
if s in cffStandardStringMapping:
|
|
SID = cffStandardStringMapping[s]
|
|
elif s in self.stringMapping:
|
|
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
|
|
|
|
cffISOAdobeStrings = [".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"]
|
|
|
|
cffISOAdobeStringCount = 229
|
|
assert len(cffISOAdobeStrings) == cffISOAdobeStringCount
|
|
|
|
cffIExpertStrings = [".notdef", "space", "exclamsmall", "Hungarumlautsmall",
|
|
"dollaroldstyle", "dollarsuperior", "ampersandsmall", "Acutesmall",
|
|
"parenleftsuperior", "parenrightsuperior", "twodotenleader", "onedotenleader",
|
|
"comma", "hyphen", "period", "fraction", "zerooldstyle", "oneoldstyle",
|
|
"twooldstyle", "threeoldstyle", "fouroldstyle", "fiveoldstyle", "sixoldstyle",
|
|
"sevenoldstyle", "eightoldstyle", "nineoldstyle", "colon", "semicolon",
|
|
"commasuperior", "threequartersemdash", "periodsuperior", "questionsmall",
|
|
"asuperior", "bsuperior", "centsuperior", "dsuperior", "esuperior", "isuperior",
|
|
"lsuperior", "msuperior", "nsuperior", "osuperior", "rsuperior", "ssuperior",
|
|
"tsuperior", "ff", "fi", "fl", "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",
|
|
"onequarter", "onehalf", "threequarters", "questiondownsmall", "oneeighth",
|
|
"threeeighths", "fiveeighths", "seveneighths", "onethird", "twothirds",
|
|
"zerosuperior", "onesuperior", "twosuperior", "threesuperior", "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"]
|
|
|
|
cffExpertStringCount = 166
|
|
assert len(cffIExpertStrings) == cffExpertStringCount
|
|
|
|
cffExpertSubsetStrings = [".notdef", "space", "dollaroldstyle",
|
|
"dollarsuperior", "parenleftsuperior", "parenrightsuperior", "twodotenleader",
|
|
"onedotenleader", "comma", "hyphen", "period", "fraction", "zerooldstyle",
|
|
"oneoldstyle", "twooldstyle", "threeoldstyle", "fouroldstyle", "fiveoldstyle",
|
|
"sixoldstyle", "sevenoldstyle", "eightoldstyle", "nineoldstyle", "colon",
|
|
"semicolon", "commasuperior", "threequartersemdash", "periodsuperior",
|
|
"asuperior", "bsuperior", "centsuperior", "dsuperior", "esuperior", "isuperior",
|
|
"lsuperior", "msuperior", "nsuperior", "osuperior", "rsuperior", "ssuperior",
|
|
"tsuperior", "ff", "fi", "fl", "ffi", "ffl", "parenleftinferior",
|
|
"parenrightinferior", "hyphensuperior", "colonmonetary", "onefitted", "rupiah",
|
|
"centoldstyle", "figuredash", "hypheninferior", "onequarter", "onehalf",
|
|
"threequarters", "oneeighth", "threeeighths", "fiveeighths", "seveneighths",
|
|
"onethird", "twothirds", "zerosuperior", "onesuperior", "twosuperior",
|
|
"threesuperior", "foursuperior", "fivesuperior", "sixsuperior", "sevensuperior",
|
|
"eightsuperior", "ninesuperior", "zeroinferior", "oneinferior", "twoinferior",
|
|
"threeinferior", "fourinferior", "fiveinferior", "sixinferior", "seveninferior",
|
|
"eightinferior", "nineinferior", "centinferior", "dollarinferior",
|
|
"periodinferior", "commainferior"]
|
|
|
|
cffExpertSubsetStringCount = 87
|
|
assert len(cffExpertSubsetStrings) == cffExpertSubsetStringCount
|