def checksumTables(self):
# Check the checksums for all tables
for t in self.tables:
table = self.get_chunk(t['offset'], t['length'])
checksum = calcChecksum(table)
if t['tag'] == 'head':
adjustment = unpack('>l', table[8:8 + 4])[0]
checksum = add32(checksum, -adjustment)
xchecksum = t['checksum']
if xchecksum != checksum:
raise TTFError(
'TTF file "%s": invalid checksum %s table: %s (expected %s)'
% (self.filename, hex32(checksum), t['tag'],
hex32(xchecksum)))
def checksumFile(self):
# Check the checksums for the whole file
checksum = calcChecksum(self._ttf_data)
if 0xB1B0AFBA != checksum:
raise TTFError(
'TTF file "%s": invalid checksum %s (expected 0xB1B0AFBA) len: %d &3: %d'
% (self.filename, hex32(checksum), len(self._ttf_data),
(len(self._ttf_data) & 3)))
def checksumFile(self):
# Check the checksums for the whole file
checksum = calcChecksum(self._ttf_data)
if 0xB1B0AFBA!=checksum:
raise TTFError('TTF file "%s": invalid checksum %s (expected 0xB1B0AFBA) len: %d &3: %d' % (self.filename,hex32(checksum),len(self._ttf_data),(len(self._ttf_data)&3)))
def checksumTables(self):
# Check the checksums for all tables
for t in self.tables:
table = self.get_chunk(t['offset'], t['length'])
checksum = calcChecksum(table)
if t['tag'] == 'head':
adjustment = unpack('>l', table[8:8+4])[0]
checksum = add32(checksum, -adjustment)
xchecksum = t['checksum']
if xchecksum != checksum:
raise TTFError('TTF file "%s": invalid checksum %s table: %s (expected %s)' % (self.filename,hex32(checksum),t['tag'],hex32(xchecksum)))
