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Use os.replace where applicable (#793)

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When using 
```py
os.remove(encodeFilename(filename))
os.rename(encodeFilename(temp_filename), encodeFilename(filename))
```
the `os.remove` need not be atomic and so can be executed arbitrarily compared to the immediately following rename call. It is better to use `os.replace` instead

Authored by: paulwrubel
This commit is contained in:
Paul Wrubel 2021-08-26 21:27:20 -05:00 • committed by GitHub
parent 691d5823d6
commit d75201a873
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5 changed files with 10 additions and 18 deletions
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13
yt_dlp/postprocessor/ffmpeg.py
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@ -520,8 +520,7 @@ class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
temp_filename = prepend_extension(filename, 'temp')
self.to_screen('Embedding subtitles in "%s"' % filename)
self.run_ffmpeg_multiple_files(input_files, temp_filename, opts)
os.remove(encodeFilename(filename))
os.rename(encodeFilename(temp_filename), encodeFilename(filename))
os.replace(temp_filename, filename)
files_to_delete = [] if self._already_have_subtitle else sub_filenames
return files_to_delete, information
@ -628,8 +627,7 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
itertools.chain(self._options(info['ext']), *options))
if chapters:
os.remove(metadata_filename)
os.remove(encodeFilename(filename))
os.rename(encodeFilename(temp_filename), encodeFilename(filename))
os.replace(temp_filename, filename)
return [], info
@ -673,8 +671,7 @@ class FFmpegFixupPostProcessor(FFmpegPostProcessor):
self.to_screen(f'{msg} of "{filename}"')
self.run_ffmpeg(filename, temp_filename, options)
os.remove(encodeFilename(filename))
os.rename(encodeFilename(temp_filename), encodeFilename(filename))
os.replace(temp_filename, filename)
class FFmpegFixupStretchedPP(FFmpegFixupPostProcessor):
@ -866,9 +863,7 @@ class FFmpegThumbnailsConvertorPP(FFmpegPostProcessor):
if thumbnail_ext != 'webp' and self.is_webp(thumbnail_filename):
self.to_screen('Correcting thumbnail "%s" extension to webp' % thumbnail_filename)
webp_filename = replace_extension(thumbnail_filename, 'webp')
if os.path.exists(webp_filename):
os.remove(webp_filename)
os.rename(encodeFilename(thumbnail_filename), encodeFilename(webp_filename))
os.replace(thumbnail_filename, webp_filename)
info['thumbnails'][idx]['filepath'] = webp_filename
info['__files_to_move'][webp_filename] = replace_extension(
info['__files_to_move'].pop(thumbnail_filename), 'webp')