def check_delete_mes(self, file_name):
Steganography.encode_to_bmp(file_name, "Some text")
coded_text = Steganography.decode_from_bmp(file_name)
self.assertEqual("Some text", coded_text)
Steganography.delete_message_from_bmp(file_name)
with self.assertRaises(Exception) as cm:
Steganography.decode_from_bmp(file_name)
exception = cm.exception
self.assertEqual(strings.DATA_CORRUPTED, exception.args[0])
def do_encode_with_delete_previous(self, file_name, encode_value):
sys.argv = ['main.py', '-e', encode_value, '-f', file_name, '-c']
result = main.run()
self.assertEqual(strings.ENCODE_COMPLETE, result)
Steganography.delete_message_from_bmp(file_name)
with self.assertRaises(Exception) as cm:
Steganography.decode_from_bmp(file_name)
exception = cm.exception
self.assertEqual(strings.DATA_CORRUPTED, exception.args[0])
def run():
parser = create_parser()
namespace = parser.parse_args(sys.argv[1:])
many_files = False
if len(namespace.filepath.split()) != 1:
many_files = True
namespace.filepath = namespace.filepath.split()
if not many_files:
if namespace.encode is not None and not namespace.decode:
if namespace.clear:
Steganography.delete_message_from_bmp(namespace.filepath)
Steganography.encode_to_bmp(namespace.filepath, namespace.encode)
return strings.ENCODE_COMPLETE
elif namespace.decode and namespace.encode is None:
message = Steganography.decode_from_bmp(namespace.filepath)
if namespace.clear:
Steganography.delete_message_from_bmp(namespace.filepath)
return message
elif (namespace.clear and namespace.encode is None
and not namespace.decode):
return Steganography.delete_message_from_bmp(namespace.filepath)
else:
return strings.WRONG_ARGUMENTS
else:
if namespace.encode is not None and not namespace.decode:
if namespace.clear:
ManySteganographyAdapter.delete_message_from_many_bmp(
namespace.filepath)
ManySteganographyAdapter.encode_to_many_bmp(
namespace.encode, namespace.filepath)
return strings.ENCODE_COMPLETE
elif namespace.decode and namespace.encode is None:
message = ManySteganographyAdapter.decode_from_many_bmp(
namespace.filepath)
if namespace.clear:
ManySteganographyAdapter.delete_message_from_many_bmp(
namespace.filepath)
return message
elif (namespace.clear and namespace.encode is None
and not namespace.decode):
return ManySteganographyAdapter.delete_message_from_many_bmp(
namespace.filepath)
else:
return strings.WRONG_ARGUMENTS
def delete_message_from_many_bmp(files):
"""Удаляет шифрованное соообщение из списка .bmp файлов при наличии."""
results = []
for file in files:
results.append(Steganography.delete_message_from_bmp(file))
if strings.MESSAGE_NOT_FOUND in results:
return strings.SOME_FILE_HAS_NOT_MESSAGE + "\n" + strings.MESSAGE_DELETED
return strings.MESSAGE_DELETED