import DefaultTable
import struct
tsi0Format = '>HHl'
def fixlongs((glyphID, 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, -1409540300), "bad magic number" # 0xABFC1F34
self.indices = indices[:-5]
self.extra_indices = indices[-4:]
def compile(self, ttFont):
if not hasattr(self, "indices"):
# We have no corresponging table (TSI1 or TSI3); let's return
# no data, which effectively means "ignore us".
return ""
data = ""
for index, textLength, textOffset in self.indices:
data = data + struct.pack(tsi0Format, index, textLength, textOffset)
data = data + struct.pack(tsi0Format, 0XFFFE, 0, -1409540300) # 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()
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