def add_file(self, path, squash=False):
meta = Metadata()
if path[0] in "=@:+":
meta.flag = path[0]
path = path[1:]
else:
meta.flag = '='
meta.filename = os.path.basename(path)
meta.pathname = os.path.dirname(path) if not squash else ''
meta.original_filesize = os.path.getsize(path)
meta.timestamp = int(os.path.getmtime(path))
try:
with open(path, 'rb') as f:
data = f.read()
except Exception as e:
print('Unable to add %s, skipping (reason: %s)',
path, str(e))
return
meta.md5sum = hashlib.md5(data).hexdigest()
if meta.flag in '@+':
data = zlib.compress(data, 9)
meta.compressed_size = len(data)
if meta.flag in ':+':
data = xxtea.encrypt(data, self.passwd)
meta.encrypted_nbytes = len(data)
if self.metadatas:
meta.file_location = (self.metadatas[-1].file_location +
self.metadatas[-1].size)
self._file.seek(meta.file_location or ArkManager.HEADER_SIZE,
os.SEEK_SET)
self._file.write(data)
self.metadatas.append(meta)
self.file_count = len(self.metadatas)
self.metadata_offset = self._file.tell()
def _write_metadata(self):
self._file.seek(self.metadata_offset, os.SEEK_SET)
data = b''.join(meta.raw_data for meta in self.metadatas)
data = xxtea.encrypt(data, self.passwd)
self._file.write(data)