46 lines
1.4 KiB
Python
46 lines
1.4 KiB
Python
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import DefaultTable
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import struct
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tsi0Format = '>HHl'
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def fixlongs((glyphID, textLength, textOffset)):
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return int(glyphID), int(textLength), textOffset
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class table_T_S_I__0(DefaultTable.DefaultTable):
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dependencies = ["TSI1"]
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def decompile(self, data, ttFont):
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numGlyphs = ttFont['maxp'].numGlyphs
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indices = []
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size = struct.calcsize(tsi0Format)
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for i in range(numGlyphs + 5):
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glyphID, textLength, textOffset = fixlongs(struct.unpack(tsi0Format, data[:size]))
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indices.append((glyphID, textLength, textOffset))
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data = data[size:]
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assert len(data) == 0
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assert indices[-5] == (0XFFFE, 0, 0xABFC1F34), "bad magic number"
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self.indices = indices[:-5]
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self.extra_indices = indices[-4:]
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def compile(self, ttFont):
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data = ""
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size = struct.calcsize(tsi0Format)
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for index, textLength, textOffset in self.indices:
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data = data + struct.pack(tsi0Format, index, textLength, textOffset)
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data = data + struct.pack(tsi0Format, 0XFFFE, 0, 0xABFC1F34)
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for index, textLength, textOffset in self.extra_indices:
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data = data + struct.pack(tsi0Format, index, textLength, textOffset)
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return data
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def set(self, indices, extra_indices):
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# gets called by 'TSI1' or 'TSI3'
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self.indices = indices
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self.extra_indices = extra_indices
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def toXML(self, writer, ttFont):
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writer.comment("This table will be calculated by the compiler")
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writer.newline()
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