Add --overwrite option

issue #37

CHANGELOG.md

@@ -6,6 +6,8 @@ Twitch Downloader change log
 
 * Added `source` as alias for best available quality (#33)
 * Added `--no-join` option to `download` to skip ffmpeg join (#36)
+* Added `--overwrite` option to `download` to overwrite target without prompting
+  for confirmation (#37)
 
 1.11.0 (2020-09-03)
 -------------------

twitchdl/commands.py

@@ -106,7 +106,7 @@ def _select_playlist_interactive(playlists):
     return uri
 
 
-def _join_vods(playlist_path, target):
+def _join_vods(playlist_path, target, overwrite, no_overwrite):
     command = [
         "ffmpeg",
         "-i", playlist_path,
@@ -116,6 +116,9 @@ def _join_vods(playlist_path, target):
         "-loglevel", "warning",
     ]
 
+    if overwrite:
+        command.append("-y")
+
     print_out("<dim>{}</dim>".format(" ".join(command)))
     result = subprocess.run(command)
     if result.returncode != 0:
@@ -308,7 +311,7 @@ def _download_video(video_id, args):
 
     print_out("\n\nJoining files...")
     target = _video_target_filename(video, args.format)
-    _join_vods(playlist_path, target)
+    _join_vods(playlist_path, target, args.overwrite)
 
     if args.keep:
         print_out("\n<dim>Temporary files not deleted: {}</dim>".format(target_dir))

twitchdl/console.py

@@ -123,6 +123,11 @@ COMMANDS = [
                 "action": "store_true",
                 "default": False,
             }),
+            (["--overwrite"], {
+                "help": "Overwrite the target file if it already exists without prompting.",
+                "action": "store_true",
+                "default": False,
+            })
         ],
     ),
 ]