a84b28d934
- Only output unicode names as comments if we're in fact dealing with a unicode cmap subtable (and this is -- in theory -- independent of cmap format) git-svn-id: svn://svn.code.sf.net/p/fonttools/code/trunk@468 4cde692c-a291-49d1-8350-778aa11640f8
750 lines
25 KiB
Python
750 lines
25 KiB
Python
import DefaultTable
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import struct
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import array
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from fontTools import ttLib
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from fontTools.misc.textTools import safeEval, readHex
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from types import TupleType
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class table__c_m_a_p(DefaultTable.DefaultTable):
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def getcmap(self, platformID, platEncID):
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for subtable in self.tables:
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if (subtable.platformID == platformID and
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subtable.platEncID == platEncID):
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return subtable
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return None # not found
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def decompile(self, data, ttFont):
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tableVersion, numSubTables = struct.unpack(">HH", data[:4])
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self.tableVersion = int(tableVersion)
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self.tables = tables = []
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for i in range(numSubTables):
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platformID, platEncID, offset = struct.unpack(
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">HHl", data[4+i*8:4+(i+1)*8])
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platformID, platEncID = int(platformID), int(platEncID)
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format, length = struct.unpack(">HH", data[offset:offset+4])
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if (format < 8) and not length:
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continue # bogus cmap subtable?
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if format in [8,10,12]:
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format, reserved, length = struct.unpack(">HHL", data[offset:offset+8])
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if not cmap_classes.has_key(format):
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table = cmap_format_unknown(format)
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else:
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table = cmap_classes[format](format)
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table.platformID = platformID
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table.platEncID = platEncID
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table.decompile(data[offset:offset+int(length)], ttFont)
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tables.append(table)
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def compile(self, ttFont):
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self.tables.sort() # sort according to the spec; see CmapSubtable.__cmp__()
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numSubTables = len(self.tables)
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totalOffset = 4 + 8 * numSubTables
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data = struct.pack(">HH", self.tableVersion, numSubTables)
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tableData = ""
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done = {} # remember the data so we can reuse the "pointers"
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for table in self.tables:
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chunk = table.compile(ttFont)
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if done.has_key(chunk):
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offset = done[chunk]
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else:
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offset = done[chunk] = totalOffset + len(tableData)
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tableData = tableData + chunk
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data = data + struct.pack(">HHl", table.platformID, table.platEncID, offset)
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return data + tableData
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def toXML(self, writer, ttFont):
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writer.simpletag("tableVersion", version=self.tableVersion)
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writer.newline()
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for table in self.tables:
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table.toXML(writer, ttFont)
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def fromXML(self, (name, attrs, content), ttFont):
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if name == "tableVersion":
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self.tableVersion = safeEval(attrs["version"])
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return
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if name[:12] <> "cmap_format_":
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return
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if not hasattr(self, "tables"):
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self.tables = []
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format = safeEval(name[12:])
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if not cmap_classes.has_key(format):
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table = cmap_format_unknown(format)
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else:
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table = cmap_classes[format](format)
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table.platformID = safeEval(attrs["platformID"])
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table.platEncID = safeEval(attrs["platEncID"])
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table.fromXML((name, attrs, content), ttFont)
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self.tables.append(table)
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class CmapSubtable:
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def __init__(self, format):
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self.format = format
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def toXML(self, writer, ttFont):
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writer.begintag(self.__class__.__name__, [
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("platformID", self.platformID),
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("platEncID", self.platEncID),
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("language", self.language),
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])
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writer.newline()
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codes = self.cmap.items()
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codes.sort()
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self._writeCodes(codes, writer)
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writer.endtag(self.__class__.__name__)
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writer.newline()
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def _writeCodes(self, codes, writer):
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if (self.platformID, self.platEncID) == (3, 1) or self.platformID == 0:
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from fontTools.unicode import Unicode
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isUnicode = 1
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else:
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isUnicode = 0
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for code, name in codes:
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writer.simpletag("map", code=hex(code), name=name)
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if isUnicode:
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writer.comment(Unicode[code])
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writer.newline()
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def fromXML(self, (name, attrs, content), ttFont):
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self.decompile(readHex(content), ttFont)
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def __cmp__(self, other):
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# implemented so that list.sort() sorts according to the cmap spec.
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selfTuple = (
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self.platformID,
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self.platEncID,
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self.language,
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self.__dict__)
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otherTuple = (
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other.platformID,
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other.platEncID,
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other.language,
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other.__dict__)
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return cmp(selfTuple, otherTuple)
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class cmap_format_0(CmapSubtable):
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def decompile(self, data, ttFont):
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format, length, language = struct.unpack(">HHH", data[:6])
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self.language = int(language)
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assert len(data) == 262 == length
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glyphIdArray = array.array("B")
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glyphIdArray.fromstring(data[6:])
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self.cmap = cmap = {}
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for charCode in range(len(glyphIdArray)):
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cmap[charCode] = ttFont.getGlyphName(glyphIdArray[charCode])
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def compile(self, ttFont):
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charCodes = self.cmap.keys()
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charCodes.sort()
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assert charCodes == range(256) # charCodes[charCode] == charCode
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for charCode in charCodes:
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# reusing the charCodes list!
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charCodes[charCode] = ttFont.getGlyphID(self.cmap[charCode])
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glyphIdArray = array.array("B", charCodes)
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data = struct.pack(">HHH", 0, 262, self.language) + glyphIdArray.tostring()
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assert len(data) == 262
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return data
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def fromXML(self, (name, attrs, content), ttFont):
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self.language = safeEval(attrs["language"])
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self.cmap = {}
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for element in content:
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if type(element) <> TupleType:
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continue
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name, attrs, content = element
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if name <> "map":
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continue
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self.cmap[safeEval(attrs["code"])] = attrs["name"]
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subHeaderFormat = ">HHhH"
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class SubHeader:
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def __init__(self):
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self.firstCode = None
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self.entryCount = None
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self.idDelta = None
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self.idRangeOffset = None
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self.glyphIndexArray = []
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class cmap_format_2(CmapSubtable):
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def decompile(self, data, ttFont):
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format, length, language = struct.unpack(">HHH", data[:6])
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self.language = int(language)
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data = data[6:]
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subHeaderKeys = []
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maxSubHeaderindex = 0
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# get the key array, and determine the number of subHeaders.
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for i in range(256):
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key = struct.unpack(">H", data[:2])[0]
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value = int(key)/8
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if value > maxSubHeaderindex:
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maxSubHeaderindex = value
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data = data[2:]
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subHeaderKeys.append(value)
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#Load subHeaders
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subHeaderList = []
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for i in range(maxSubHeaderindex + 1):
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subHeader = SubHeader()
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(subHeader.firstCode, subHeader.entryCount, subHeader.idDelta, \
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subHeader.idRangeOffset) = struct.unpack(subHeaderFormat, data[:8])
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data = data[8:]
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giData = data[subHeader.idRangeOffset-2:]
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for j in range(subHeader.entryCount):
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gi = struct.unpack(">H", giData[:2])[0]
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giData = giData[2:]
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subHeader.glyphIndexArray.append(int(gi))
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subHeaderList.append(subHeader)
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# How this gets processed.
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# Charcodes may be one or two bytes.
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# The first byte of a charcode is mapped through the subHeaderKeys, to select
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# a subHeader. For any subheader but 0, the next byte is then mapped through the
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# selected subheader. If subheader Index 0 is selected, then the byte itself is
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# mapped through the subheader, and there is no second byte.
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# Then assume that the subsequent byte is the first byte of the next charcode,and repeat.
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#
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# Each subheader references a range in the glyphIndexArray whose length is entryCount.
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# The range in glyphIndexArray referenced by a sunheader may overlap with the range in glyphIndexArray
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# referenced by another subheader.
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# The only subheader that will be referenced by more than one first-byte value is the subheader
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# that maps the entire range of glyphID values to glyphIndex 0, e.g notdef:
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# {firstChar 0, EntryCount 0,idDelta 0,idRangeOffset xx}
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# A byte being mapped though a subheader is treated as in index into a mapping of array index to font glyphIndex.
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# A subheader specifies a subrange within (0...256) by the
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# firstChar and EntryCount values. If the byte value is outside the subrange, then the glyphIndex is zero
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# (e.g. glyph not in font).
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# If the byte index is in the subrange, then an offset index is calculated as (byteIndex - firstChar).
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# The index to glyphIndex mapping is a subrange of the glyphIndexArray. You find the start of the subrange by
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# counting idRangeOffset bytes from the idRangeOffset word. The first value in this subrange is the
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# glyphIndex for the index firstChar. The offset index should then be used in this array to get the glyphIndex.
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# Example for Logocut-Medium
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# first byte of charcode = 129; selects subheader 1.
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# subheader 1 = {firstChar 64, EntryCount 108,idDelta 42,idRangeOffset 0252}
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# second byte of charCode = 66
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# the index offset = 66-64 = 2.
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# The subrange of the glyphIndexArray starting at 0x0252 bytes from the idRangeOffset word is:
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# [glyphIndexArray index], [subrange array index] = glyphIndex
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# [256], [0]=1 from charcode [129, 64]
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# [257], [1]=2 from charcode [129, 65]
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# [258], [2]=3 from charcode [129, 66]
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# [259], [3]=4 from charcode [129, 67]
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# So, the glyphIndex = 3 from the array. Then if idDelta is not zero, add it to the glyphInex to get the final glyphIndex
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# value. In this case the final glyph index = 3+ 42 -> 45 for the final glyphIndex. Whew!
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# Has anyone ever really tried to overlap the subHeader subranges in the glyphIndexArray? I doubt it!
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self.data = ""
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self.cmap = {}
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for firstByte in range(256):
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subHeadindex = subHeaderKeys[firstByte]
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subHeader = subHeaderList[subHeadindex]
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if subHeadindex == 0:
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if (firstByte < subHeader.firstCode) or (firstByte >= subHeader.firstCode + subHeader.entryCount):
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gi = 0
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else:
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charCode = firstByte
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offsetIndex = firstByte - subHeader.firstCode
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gi = subHeader.glyphIndexArray[offsetIndex]
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if gi != 0:
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gi = gi + subHeader.idDelta
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gName = ttFont.getGlyphName(gi)
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self.cmap[charCode] = gName
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else:
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if subHeader.entryCount:
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for offsetIndex in range(subHeader.entryCount):
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charCode = firstByte * 256 + offsetIndex + subHeader.firstCode
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gi = subHeader.glyphIndexArray[offsetIndex]
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if gi != 0:
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gi = gi + subHeader.idDelta
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gName = ttFont.getGlyphName(gi)
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self.cmap[charCode] = gName
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else:
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# Is a subHead that maps to .notdef. We do need to record it, so we can later
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# know that this firstByte value is the initial byte of a two byte charcode,
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# as opposed to a sing byte charcode.
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charCode = firstByte * 256
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gName = ttFont.getGlyphName(0)
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self.cmap[charCode] = gName
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def compile(self, ttFont):
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kEmptyTwoCharCodeRange = -1
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items = self.cmap.items()
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items.sort()
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# All one-byte code values map through the subHeaderKeys table to subheader 0.
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# Assume that all entries in the subHeaderKeys table are one-byte codes unless proven otherwise.
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subHeaderKeys = [0 for x in range(256)]
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subHeaderList = []
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lastFirstByte = -1
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for item in items:
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charCode = item[0]
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firstbyte = charCode >> 8
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secondByte = charCode & 0x00FF
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gi = ttFont.getGlyphID(item[1])
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if firstbyte != lastFirstByte:
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if lastFirstByte > -1:
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# fix GI's and iDelta of last subheader.
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subHeader.idDelta = 0
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if subHeader.entryCount > 0:
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minGI = min(subHeader.glyphIndexArray) -1
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if minGI > 0:
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subHeader.idDelta = minGI
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for i in range(subHeader.entryCount):
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subHeader.glyphIndexArray[i] = subHeader.glyphIndexArray[i] - minGI
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assert (subHeader.entryCount == len(subHeader.glyphIndexArray)), "Error - subhead entry count does not match len of glyphID subrange."
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# init new subheader
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subHeader = SubHeader()
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subHeader.firstCode = secondByte
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if (secondByte == 0) and ( gi==0 ) and (lastFirstByte > -1): # happens only when the font has no glyphs in the this charcpde range.
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subHeader.entryCount = 0
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subHeaderKeys[firstbyte] = kEmptyTwoCharCodeRange
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else:
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subHeader.entryCount = 1
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subHeader.glyphIndexArray.append(gi)
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subHeaderList.append(subHeader)
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subHeaderKeys[firstbyte] = len(subHeaderList) -1
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lastFirstByte = firstbyte
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else:
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assert (subHeader.entryCount != 0), "Error: we should never see another entry for an empty 2 byte charcode range."
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codeDiff = secondByte - (subHeader.firstCode + subHeader.entryCount)
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for i in range(codeDiff):
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subHeader.glyphIndexArray.append(0)
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subHeader.glyphIndexArray.append(gi)
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subHeader.entryCount = subHeader.entryCount + codeDiff + 1
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# fix GI's and iDelta of last subheader.
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subHeader.idDelta = 0
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if subHeader.entryCount > 0:
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minGI = min(subHeader.glyphIndexArray) -1
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if minGI > 0:
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subHeader.idDelta = minGI
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for i in range(subHeader.entryCount):
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subHeaderList[i] = subHeaderList[i] - minGI
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# Now we add a last subheader for the subHeaderKeys which mapped to empty two byte charcode ranges.
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subHeader = SubHeader()
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subHeader.firstCode = 0
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subHeader.entryCount = 0
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subHeader.idDelta = 0
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subHeader.idRangeOffset = 2
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subHeaderList.append(subHeader)
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emptySubheadIndex = len(subHeaderList) - 1
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for index in range(256):
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if subHeaderKeys[index] < 0:
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subHeaderKeys[index] = emptySubheadIndex
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# Since this is the last subheader, the GlyphIndex Array starts two bytes after the start of the
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# idRangeOffset word of this subHeader. we can safely point to the first entry in the GlyphIndexArray,
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# since the first subrange of the GlyphIndexArray is for subHeader 0, which always starts with
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# charcode 0 and GID 0.
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# I am not going to try and optimise by trying to overlap the glyphIDArray subranges of the subheaders -
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# I will just write them out sequentially.
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idRangeOffset = (len(subHeaderList)-1)*8 + 2 # offset to beginning of glyphIDArray from first subheader idRangeOffset.
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for subHeader in subHeaderList[:-1]: # skip last special empty-set subheader
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subHeader.idRangeOffset = idRangeOffset
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idRangeOffset = (idRangeOffset -8) + subHeader.entryCount*2 # one less subheader, one more subRange.
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# Now we can write out the data!
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length = 6 + 512 + 8*len(subHeaderList) # header, 256 subHeaderKeys, and subheader array.
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for subhead in subHeaderList[:-1]:
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length = length + subhead.entryCount*2
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data = struct.pack(">HHH", 2, length, self.language)
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for index in subHeaderKeys:
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data = data + struct.pack(">H", index*8)
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for subhead in subHeaderList:
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data = data + struct.pack(subHeaderFormat, subhead.firstCode, subhead.entryCount, subhead.idDelta, subhead.idRangeOffset)
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for subhead in subHeaderList[:-1]:
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for gi in subhead.glyphIndexArray:
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data = data + struct.pack(">H", gi)
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assert (len(data) == length), "Error: cmap format 2 is not same length as calculated! actual: " + str(len(data))+ " calc : " + str(length)
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return data
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def fromXML(self, (name, attrs, content), ttFont):
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self.language = safeEval(attrs["language"])
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self.cmap = {}
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for element in content:
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if type(element) <> TupleType:
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continue
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name, attrs, content = element
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if name <> "map":
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continue
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self.cmap[safeEval(attrs["code"])] = attrs["name"]
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cmap_format_4_format = ">7H"
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#uint16 endCode[segCount] # Ending character code for each segment, last = 0xFFFF.
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#uint16 reservedPad # This value should be zero
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#uint16 startCode[segCount] # Starting character code for each segment
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#uint16 idDelta[segCount] # Delta for all character codes in segment
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#uint16 idRangeOffset[segCount] # Offset in bytes to glyph indexArray, or 0
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#uint16 glyphIndexArray[variable] # Glyph index array
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def splitRange(startCode, endCode, cmap):
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# Try to split a range of character codes into subranges with consecutive
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# glyph IDs in such a way that the cmap4 subtable can be stored "most"
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# efficiently. I can't prove I've got the optimal solution, but it seems
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# to do well with the fonts I tested: none became bigger, many became smaller.
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if startCode == endCode:
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return [], [endCode]
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lastID = cmap[startCode]
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lastCode = startCode
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inOrder = None
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orderedBegin = None
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subRanges = []
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# Gather subranges in which the glyph IDs are consecutive.
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for code in range(startCode + 1, endCode + 1):
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glyphID = cmap[code]
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if glyphID - 1 == lastID:
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if inOrder is None or not inOrder:
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inOrder = 1
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orderedBegin = lastCode
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else:
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if inOrder:
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inOrder = 0
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subRanges.append((orderedBegin, lastCode))
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orderedBegin = None
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lastID = glyphID
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lastCode = code
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if inOrder:
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subRanges.append((orderedBegin, lastCode))
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assert lastCode == endCode
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# Now filter out those new subranges that would only make the data bigger.
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# A new segment cost 8 bytes, not using a new segment costs 2 bytes per
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# character.
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newRanges = []
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for b, e in subRanges:
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if b == startCode and e == endCode:
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break # the whole range, we're fine
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if b == startCode or e == endCode:
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threshold = 4 # split costs one more segment
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else:
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threshold = 8 # split costs two more segments
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if (e - b + 1) > threshold:
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newRanges.append((b, e))
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subRanges = newRanges
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if not subRanges:
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return [], [endCode]
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if subRanges[0][0] != startCode:
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subRanges.insert(0, (startCode, subRanges[0][0] - 1))
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if subRanges[-1][1] != endCode:
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subRanges.append((subRanges[-1][1] + 1, endCode))
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# Fill the "holes" in the segments list -- those are the segments in which
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# the glyph IDs are _not_ consecutive.
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i = 1
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while i < len(subRanges):
|
|
if subRanges[i-1][1] + 1 != subRanges[i][0]:
|
|
subRanges.insert(i, (subRanges[i-1][1] + 1, subRanges[i][0] - 1))
|
|
i = i + 1
|
|
i = i + 1
|
|
|
|
# Transform the ranges into startCode/endCode lists.
|
|
start = []
|
|
end = []
|
|
for b, e in subRanges:
|
|
start.append(b)
|
|
end.append(e)
|
|
start.pop(0)
|
|
|
|
assert len(start) + 1 == len(end)
|
|
return start, end
|
|
|
|
|
|
class cmap_format_4(CmapSubtable):
|
|
|
|
def decompile(self, data, ttFont):
|
|
(format, length, self.language, segCountX2,
|
|
searchRange, entrySelector, rangeShift) = \
|
|
struct.unpack(cmap_format_4_format, data[:14])
|
|
assert len(data) == length, "corrupt cmap table (%d, %d)" % (len(data), length)
|
|
segCount = segCountX2 / 2
|
|
|
|
allCodes = array.array("H")
|
|
allCodes.fromstring(data[14:])
|
|
if ttLib.endian <> "big":
|
|
allCodes.byteswap()
|
|
|
|
# divide the data
|
|
endCode = allCodes[:segCount]
|
|
allCodes = allCodes[segCount+1:] # the +1 is skipping the reservedPad field
|
|
startCode = allCodes[:segCount]
|
|
allCodes = allCodes[segCount:]
|
|
idDelta = allCodes[:segCount]
|
|
allCodes = allCodes[segCount:]
|
|
idRangeOffset = allCodes[:segCount]
|
|
glyphIndexArray = allCodes[segCount:]
|
|
|
|
# build 2-byte character mapping
|
|
cmap = {}
|
|
for i in range(len(startCode) - 1): # don't do 0xffff!
|
|
for charCode in range(startCode[i], endCode[i] + 1):
|
|
rangeOffset = idRangeOffset[i]
|
|
if rangeOffset == 0:
|
|
glyphID = charCode + idDelta[i]
|
|
else:
|
|
# *someone* needs to get killed.
|
|
index = idRangeOffset[i] / 2 + (charCode - startCode[i]) + i - len(idRangeOffset)
|
|
if glyphIndexArray[index] <> 0: # if not missing glyph
|
|
glyphID = glyphIndexArray[index] + idDelta[i]
|
|
else:
|
|
glyphID = 0 # missing glyph
|
|
cmap[charCode] = ttFont.getGlyphName(glyphID % 0x10000)
|
|
self.cmap = cmap
|
|
|
|
def compile(self, ttFont):
|
|
from fontTools.ttLib.sfnt import maxPowerOfTwo
|
|
|
|
cmap = {} # code:glyphID mapping
|
|
for code, glyphName in self.cmap.items():
|
|
cmap[code] = ttFont.getGlyphID(glyphName)
|
|
codes = cmap.keys()
|
|
codes.sort()
|
|
|
|
# Build startCode and endCode lists.
|
|
# Split the char codes in ranges of consecutive char codes, then split
|
|
# each range in more ranges of consecutive/not consecutive glyph IDs.
|
|
# See splitRange().
|
|
lastCode = codes[0]
|
|
endCode = []
|
|
startCode = [lastCode]
|
|
for charCode in codes[1:]: # skip the first code, it's the first start code
|
|
if charCode == lastCode + 1:
|
|
lastCode = charCode
|
|
continue
|
|
start, end = splitRange(startCode[-1], lastCode, cmap)
|
|
startCode.extend(start)
|
|
endCode.extend(end)
|
|
startCode.append(charCode)
|
|
lastCode = charCode
|
|
endCode.append(lastCode)
|
|
startCode.append(0xffff)
|
|
endCode.append(0xffff)
|
|
|
|
# build up rest of cruft
|
|
idDelta = []
|
|
idRangeOffset = []
|
|
glyphIndexArray = []
|
|
|
|
for i in range(len(endCode)-1): # skip the closing codes (0xffff)
|
|
indices = []
|
|
for charCode in range(startCode[i], endCode[i] + 1):
|
|
indices.append(cmap[charCode])
|
|
if indices == range(indices[0], indices[0] + len(indices)):
|
|
idDelta.append((indices[0] - startCode[i]) % 0x10000)
|
|
idRangeOffset.append(0)
|
|
else:
|
|
# someone *definitely* needs to get killed.
|
|
idDelta.append(0)
|
|
idRangeOffset.append(2 * (len(endCode) + len(glyphIndexArray) - i))
|
|
glyphIndexArray.extend(indices)
|
|
idDelta.append(1) # 0xffff + 1 == (tadaa!) 0. So this end code maps to .notdef
|
|
idRangeOffset.append(0)
|
|
|
|
# Insane.
|
|
segCount = len(endCode)
|
|
segCountX2 = segCount * 2
|
|
maxExponent = maxPowerOfTwo(segCount)
|
|
searchRange = 2 * (2 ** maxExponent)
|
|
entrySelector = maxExponent
|
|
rangeShift = 2 * segCount - searchRange
|
|
|
|
allCodes = array.array("H",
|
|
endCode + [0] + startCode + idDelta + idRangeOffset + glyphIndexArray)
|
|
if ttLib.endian <> "big":
|
|
allCodes.byteswap()
|
|
data = allCodes.tostring()
|
|
length = struct.calcsize(cmap_format_4_format) + len(data)
|
|
header = struct.pack(cmap_format_4_format, self.format, length, self.language,
|
|
segCountX2, searchRange, entrySelector, rangeShift)
|
|
data = header + data
|
|
return data
|
|
|
|
def fromXML(self, (name, attrs, content), ttFont):
|
|
self.language = safeEval(attrs["language"])
|
|
self.cmap = {}
|
|
for element in content:
|
|
if type(element) <> TupleType:
|
|
continue
|
|
name, attrs, content = element
|
|
if name <> "map":
|
|
continue
|
|
self.cmap[safeEval(attrs["code"])] = attrs["name"]
|
|
|
|
|
|
class cmap_format_6(CmapSubtable):
|
|
|
|
def decompile(self, data, ttFont):
|
|
format, length, language, firstCode, entryCount = struct.unpack(
|
|
">HHHHH", data[:10])
|
|
self.language = int(language)
|
|
firstCode = int(firstCode)
|
|
self.language = int(language)
|
|
data = data[10:]
|
|
#assert len(data) == 2 * entryCount # XXX not true in Apple's Helvetica!!!
|
|
glyphIndexArray = array.array("H")
|
|
glyphIndexArray.fromstring(data[:2 * int(entryCount)])
|
|
if ttLib.endian <> "big":
|
|
glyphIndexArray.byteswap()
|
|
self.cmap = cmap = {}
|
|
for i in range(len(glyphIndexArray)):
|
|
glyphID = glyphIndexArray[i]
|
|
glyphName = ttFont.getGlyphName(glyphID)
|
|
cmap[i+firstCode] = glyphName
|
|
|
|
def compile(self, ttFont):
|
|
codes = self.cmap.keys()
|
|
codes.sort()
|
|
assert codes == range(codes[0], codes[0] + len(codes))
|
|
glyphIndexArray = array.array("H", [0] * len(codes))
|
|
firstCode = codes[0]
|
|
for i in range(len(codes)):
|
|
code = codes[i]
|
|
glyphIndexArray[code-firstCode] = ttFont.getGlyphID(self.cmap[code])
|
|
if ttLib.endian <> "big":
|
|
glyphIndexArray.byteswap()
|
|
data = glyphIndexArray.tostring()
|
|
header = struct.pack(">HHHHH",
|
|
6, len(data) + 10, self.language, firstCode, len(self.cmap))
|
|
return header + data
|
|
|
|
def fromXML(self, (name, attrs, content), ttFont):
|
|
self.language = safeEval(attrs["language"])
|
|
self.cmap = {}
|
|
for element in content:
|
|
if type(element) <> TupleType:
|
|
continue
|
|
name, attrs, content = element
|
|
if name <> "map":
|
|
continue
|
|
self.cmap[safeEval(attrs["code"])] = attrs["name"]
|
|
|
|
|
|
class cmap_format_12(CmapSubtable):
|
|
|
|
def decompile(self, data, ttFont):
|
|
format, reserved, length, language, nGroups = struct.unpack(">HHLLL", data[:16])
|
|
data = data[16:]
|
|
assert len(data) == nGroups*12 == (length - 16)
|
|
self.cmap = cmap = {}
|
|
for i in range(nGroups):
|
|
startCharCode, endCharCode, glyphID = struct.unpack(">LLL",data[:12] )
|
|
data = data[12:]
|
|
while startCharCode <= endCharCode:
|
|
glyphName = ttFont.getGlyphName(glyphID)
|
|
cmap[startCharCode] = glyphName
|
|
glyphID = glyphID + 1
|
|
startCharCode = startCharCode + 1
|
|
self.format = format
|
|
self.reserved = reserved
|
|
self.length = length
|
|
self.language = language
|
|
self.nGroups = nGroups
|
|
|
|
def compile(self, ttFont):
|
|
cmap = {} # code:glyphID mapping
|
|
for code, glyphName in self.cmap.items():
|
|
cmap[code] = ttFont.getGlyphID(glyphName)
|
|
|
|
charCodes = self.cmap.keys()
|
|
charCodes.sort()
|
|
startCharCode = charCodes[0]
|
|
startGlyphID = cmap[startCharCode]
|
|
prevCharCode = startCharCode
|
|
prevGlyphID = startGlyphID
|
|
nGroups = 0
|
|
data = ""
|
|
|
|
for charCode in charCodes[1:]:
|
|
glyphID = cmap[charCode]
|
|
if charCode != prevCharCode+1 or glyphID != prevGlyphID+1:
|
|
endCharCode = prevCharCode
|
|
data = data + struct.pack(">LLL", startCharCode, endCharCode, startGlyphID)
|
|
startGlyphID = glyphID
|
|
startCharCode = charCode
|
|
nGroups = nGroups + 1
|
|
prevCharCode = charCode
|
|
prevGlyphID = glyphID
|
|
# Need to write out the last group
|
|
endCharCode = prevCharCode
|
|
data = data + struct.pack(">LLL", startCharCode, endCharCode, startGlyphID)
|
|
nGroups = nGroups + 1
|
|
|
|
# Prepend header information
|
|
data = struct.pack(">HHLLL", self.format, 0, len(data)+16, self.language, nGroups) + data
|
|
return data
|
|
|
|
def toXML(self, writer, ttFont):
|
|
writer.begintag(self.__class__.__name__, [
|
|
("platformID", self.platformID),
|
|
("platEncID", self.platEncID),
|
|
("format", self.format),
|
|
("reserved", self.reserved),
|
|
("length", self.length),
|
|
("language", self.language),
|
|
("nGroups", self.nGroups),
|
|
])
|
|
writer.newline()
|
|
codes = self.cmap.items()
|
|
codes.sort()
|
|
self._writeCodes(codes, writer)
|
|
writer.endtag(self.__class__.__name__)
|
|
writer.newline()
|
|
|
|
def fromXML(self, (name, attrs, content), ttFont):
|
|
self.language = safeEval(attrs["language"])
|
|
self.cmap = {}
|
|
for element in content:
|
|
if type(element) <> TupleType:
|
|
continue
|
|
name, attrs, content = element
|
|
if name <> "map":
|
|
continue
|
|
self.cmap[safeEval(attrs["code"])] = attrs["name"]
|
|
|
|
|
|
class cmap_format_unknown(CmapSubtable):
|
|
|
|
def toXML(self, writer, ttFont):
|
|
writer.begintag(self.__class__.__name__, [
|
|
("platformID", self.platformID),
|
|
("platEncID", self.platEncID),
|
|
])
|
|
writer.newline()
|
|
writer.dumphex(self.compile(ttFont))
|
|
writer.endtag(self.__class__.__name__)
|
|
writer.newline()
|
|
|
|
def decompile(self, data, ttFont):
|
|
self.data = data
|
|
|
|
def compile(self, ttFont):
|
|
return self.data
|
|
|
|
|
|
cmap_classes = {
|
|
0: cmap_format_0,
|
|
2: cmap_format_2,
|
|
4: cmap_format_4,
|
|
6: cmap_format_6,
|
|
12: cmap_format_12,
|
|
}
|