1 from __future__ import print_function, division, absolute_import 2 from fontTools.misc.py23 import * 3 from fontTools.misc.textTools import safeEval 4 from . import DefaultTable 5 import struct 6 import array 7 8 # XXX I've lowered the strictness, to make sure Apple's own Chicago 9 # XXX gets through. They're looking into it, I hope to raise the standards 10 # XXX back to normal eventually. 11 12 class table_L_T_S_H_(DefaultTable.DefaultTable): 13 14 def decompile(self, data, ttFont): 15 version, numGlyphs = struct.unpack(">HH", data[:4]) 16 data = data[4:] 17 assert version == 0, "unknown version: %s" % version 18 assert (len(data) % numGlyphs) < 4, "numGlyphs doesn't match data length" 19 # ouch: the assertion is not true in Chicago! 20 #assert numGlyphs == ttFont['maxp'].numGlyphs 21 yPels = array.array("B") 22 yPels.fromstring(data) 23 self.yPels = {} 24 for i in range(numGlyphs): 25 self.yPels[ttFont.getGlyphName(i)] = yPels[i] 26 27 def compile(self, ttFont): 28 version = 0 29 names = list(self.yPels.keys()) 30 numGlyphs = len(names) 31 yPels = [0] * numGlyphs 32 # ouch: the assertion is not true in Chicago! 33 #assert len(self.yPels) == ttFont['maxp'].numGlyphs == numGlyphs 34 for name in names: 35 yPels[ttFont.getGlyphID(name)] = self.yPels[name] 36 yPels = array.array("B", yPels) 37 return struct.pack(">HH", version, numGlyphs) + yPels.tostring() 38 39 def toXML(self, writer, ttFont): 40 names = sorted(self.yPels.keys()) 41 for name in names: 42 writer.simpletag("yPel", name=name, value=self.yPels[name]) 43 writer.newline() 44 45 def fromXML(self, name, attrs, content, ttFont): 46 if not hasattr(self, "yPels"): 47 self.yPels = {} 48 if name != "yPel": 49 return # ignore unknown tags 50 self.yPels[attrs["name"]] = safeEval(attrs["value"]) 51 52
