Multiple fixes to ffsubsync.

libs/ffsubsync/ffsubsync.py

@@ -41,12 +41,15 @@ def make_test_case(args, npy_savename, sync_was_successful):
         raise ValueError('need non-null npy_savename')
     tar_dir = '{}.{}'.format(
         args.reference,
-        datetime.now().strftime('%Y-%m-%d-%H:%M:%S')
+        datetime.now().strftime('%Y-%m-%d-%H-%M-%S')
     )
     logger.info('creating test archive {}.tar.gz...'.format(tar_dir))
     os.mkdir(tar_dir)
     try:
-        shutil.move('ffsubsync.log', tar_dir)
+        log_path = 'ffsubsync.log'
+        if args.log_dir_path and os.path.isdir(args.log_dir_path):
+            log_path = os.path.join(args.log_dir_path, log_path)
+        shutil.move(log_path, tar_dir)
         shutil.copy(args.srtin, tar_dir)
         if sync_was_successful:
             shutil.move(args.srtout, tar_dir)
@@ -265,7 +268,10 @@ def run(args):
         result['retval'] = 1
         return result
     if args.make_test_case:
-        handler = logging.FileHandler('ffsubsync.log')
+        log_path = 'ffsubsync.log'
+        if args.log_dir_path and os.path.isdir(args.log_dir_path):
+            log_path = os.path.join(args.log_dir_path, log_path)
+        handler = logging.FileHandler(log_path)
         logger.addHandler(handler)
     if args.extract_subs_from_stream is not None:
         result['retval'] = extract_subtitles_from_reference(args)
@@ -286,6 +292,8 @@ def run(args):
     srt_pipes = make_srt_pipes(args)
     sync_was_successful = try_sync(args, reference_pipe, srt_pipes, result)
     if args.make_test_case:
+        handler.close()
+        logger.removeHandler(handler)
         result['retval'] += make_test_case(args, npy_savename, sync_was_successful)
     return result
 
@@ -354,6 +362,8 @@ def add_cli_only_args(parser):
         '--ffmpeg-path', '--ffmpegpath', default=None,
         help='Where to look for ffmpeg and ffprobe. Uses the system PATH by default.'
     )
+    parser.add_argument('--log-dir-path', default=None, help='Where to save ffsubsync.log file (must be an existing '
+                                                             'directory).')
     parser.add_argument('--vlc-mode', action='store_true', help=argparse.SUPPRESS)
     parser.add_argument('--gui-mode', action='store_true', help=argparse.SUPPRESS)