diff options
Diffstat (limited to 'Lib/fontTools/ttLib/tables/T_S_I__0.py')
| -rw-r--r-- | Lib/fontTools/ttLib/tables/T_S_I__0.py | 80 |
1 files changed, 41 insertions, 39 deletions
diff --git a/Lib/fontTools/ttLib/tables/T_S_I__0.py b/Lib/fontTools/ttLib/tables/T_S_I__0.py index b187f425..f15fc67b 100644 --- a/Lib/fontTools/ttLib/tables/T_S_I__0.py +++ b/Lib/fontTools/ttLib/tables/T_S_I__0.py @@ -8,47 +8,49 @@ in the TSI1 table. from . import DefaultTable import struct -tsi0Format = '>HHL' +tsi0Format = ">HHL" + def fixlongs(glyphID, textLength, textOffset): - return int(glyphID), int(textLength), textOffset + return int(glyphID), int(textLength), textOffset class table_T_S_I__0(DefaultTable.DefaultTable): - - dependencies = ["TSI1"] - - def decompile(self, data, ttFont): - numGlyphs = ttFont['maxp'].numGlyphs - indices = [] - size = struct.calcsize(tsi0Format) - for i in range(numGlyphs + 5): - glyphID, textLength, textOffset = fixlongs(*struct.unpack(tsi0Format, data[:size])) - indices.append((glyphID, textLength, textOffset)) - data = data[size:] - assert len(data) == 0 - assert indices[-5] == (0XFFFE, 0, 0xABFC1F34), "bad magic number" - self.indices = indices[:-5] - self.extra_indices = indices[-4:] - - def compile(self, ttFont): - if not hasattr(self, "indices"): - # We have no corresponding table (TSI1 or TSI3); let's return - # no data, which effectively means "ignore us". - return b"" - data = b"" - for index, textLength, textOffset in self.indices: - data = data + struct.pack(tsi0Format, index, textLength, textOffset) - data = data + struct.pack(tsi0Format, 0XFFFE, 0, 0xABFC1F34) - for index, textLength, textOffset in self.extra_indices: - data = data + struct.pack(tsi0Format, index, textLength, textOffset) - return data - - def set(self, indices, extra_indices): - # gets called by 'TSI1' or 'TSI3' - self.indices = indices - self.extra_indices = extra_indices - - def toXML(self, writer, ttFont): - writer.comment("This table will be calculated by the compiler") - writer.newline() + dependencies = ["TSI1"] + + def decompile(self, data, ttFont): + numGlyphs = ttFont["maxp"].numGlyphs + indices = [] + size = struct.calcsize(tsi0Format) + for i in range(numGlyphs + 5): + glyphID, textLength, textOffset = fixlongs( + *struct.unpack(tsi0Format, data[:size]) + ) + indices.append((glyphID, textLength, textOffset)) + data = data[size:] + assert len(data) == 0 + assert indices[-5] == (0xFFFE, 0, 0xABFC1F34), "bad magic number" + self.indices = indices[:-5] + self.extra_indices = indices[-4:] + + def compile(self, ttFont): + if not hasattr(self, "indices"): + # We have no corresponding table (TSI1 or TSI3); let's return + # no data, which effectively means "ignore us". + return b"" + data = b"" + for index, textLength, textOffset in self.indices: + data = data + struct.pack(tsi0Format, index, textLength, textOffset) + data = data + struct.pack(tsi0Format, 0xFFFE, 0, 0xABFC1F34) + for index, textLength, textOffset in self.extra_indices: + data = data + struct.pack(tsi0Format, index, textLength, textOffset) + return data + + def set(self, indices, extra_indices): + # gets called by 'TSI1' or 'TSI3' + self.indices = indices + self.extra_indices = extra_indices + + def toXML(self, writer, ttFont): + writer.comment("This table will be calculated by the compiler") + writer.newline() |