def _parse_cffile(self, offset):
""" Parse a CFFILE entry """
fmt = '<I' # uncompressed size
fmt += 'I' # uncompressed offset of this file in the folder
fmt += 'H' # index into the CFFOLDER area
fmt += 'H' # date
fmt += 'H' # time
fmt += 'H' # attribs
try:
vals = struct.unpack_from(fmt, self._buf_file, offset)
except struct.error as e:
raise CorruptionError(str(e))
# debugging
if os.getenv('PYTHON_CABARCHIVE_DEBUG'):
print "CFFILE", vals
# parse filename
offset += struct.calcsize(fmt)
filename = ''
for i in range(0, 255):
filename_c = self._buf_file[offset + i]
if filename_c == b'\0':
break
filename += filename_c
# add file
f = CabFile(filename)
f._date_decode(vals[3])
f._time_decode(vals[4])
f._attr_decode(vals[5])
f.contents = self._folder_data[vals[2]][vals[1]:vals[1] + vals[0]]
if len(f.contents) != vals[0]:
raise CorruptionError("Corruption inside archive, %s is size %i but "
"expected size %i" % (filename, len(f.contents), vals[0]))
self.files.append(f)
# return offset to next entry
return 16 + len(filename) + 1
