[outtmpl] Limit changes during sanitization

Closes #2761
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pukkandan 2022-03-27 10:04:04 +05:30
parent fd2ad7cb24
commit 5c3895fff1
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5 changed files with 30 additions and 20 deletions

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@ -144,6 +144,7 @@ Some of yt-dlp's default options are different from that of youtube-dl and youtu
* Some private fields such as filenames are removed by default from the infojson. Use `--no-clean-infojson` or `--compat-options no-clean-infojson` to revert this
* When `--embed-subs` and `--write-subs` are used together, the subtitles are written to disk and also embedded in the media file. You can use just `--embed-subs` to embed the subs and automatically delete the separate file. See [#630 (comment)](https://github.com/yt-dlp/yt-dlp/issues/630#issuecomment-893659460) for more info. `--compat-options no-keep-subs` can be used to revert this
* `certifi` will be used for SSL root certificates, if installed. If you want to use system certificates (e.g. self-signed), use `--compat-options no-certifi`
* youtube-dl tries to remove some superfluous punctuations from filenames. While this can sometimes be helpfull, it is often undesirable. So yt-dlp tries to keep the fields in the filenames as close to their original values as possible. You can use `--compat-options filename-sanitization` to revert to youtube-dl's behavior
For ease of use, a few more compat options are available:
* `--compat-options all`: Use all compat options

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@ -160,10 +160,12 @@ class TestUtil(unittest.TestCase):
sanitize_filename('New World record at 0:12:34'),
'New World record at 0_12_34')
self.assertEqual(sanitize_filename('--gasdgf'), '_-gasdgf')
self.assertEqual(sanitize_filename('--gasdgf'), '--gasdgf')
self.assertEqual(sanitize_filename('--gasdgf', is_id=True), '--gasdgf')
self.assertEqual(sanitize_filename('.gasdgf'), 'gasdgf')
self.assertEqual(sanitize_filename('--gasdgf', is_id=False), '_-gasdgf')
self.assertEqual(sanitize_filename('.gasdgf'), '.gasdgf')
self.assertEqual(sanitize_filename('.gasdgf', is_id=True), '.gasdgf')
self.assertEqual(sanitize_filename('.gasdgf', is_id=False), 'gasdgf')
forbidden = '"\0\\/'
for fc in forbidden:

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@ -87,6 +87,7 @@ from .utils import (
MaxDownloadsReached,
merge_headers,
network_exceptions,
NO_DEFAULT,
number_of_digits,
orderedSet,
OUTTMPL_TYPES,
@ -1150,8 +1151,10 @@ class YoutubeDL(object):
na = self.params.get('outtmpl_na_placeholder', 'NA')
def filename_sanitizer(key, value, restricted=self.params.get('restrictfilenames')):
return sanitize_filename(str(value), restricted=restricted,
is_id=re.search(r'(^|[_.])id(\.|$)', key))
return sanitize_filename(str(value), restricted=restricted, is_id=(
bool(re.search(r'(^|[_.])id(\.|$)', key))
if 'filename-sanitization' in self.params.get('compat_opts', [])
else NO_DEFAULT))
sanitizer = sanitize if callable(sanitize) else filename_sanitizer
sanitize = bool(sanitize)

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@ -338,7 +338,7 @@ def create_parser():
action='callback', callback=_set_from_options_callback,
callback_kwargs={
'allowed_values': {
'filename', 'format-sort', 'abort-on-error', 'format-spec', 'no-playlist-metafiles',
'filename', 'filename-sanitization', 'format-sort', 'abort-on-error', 'format-spec', 'no-playlist-metafiles',
'multistreams', 'no-live-chat', 'playlist-index', 'list-formats', 'no-direct-merge',
'no-youtube-channel-redirect', 'no-youtube-unavailable-videos', 'no-attach-info-json', 'embed-metadata',
'embed-thumbnail-atomicparsley', 'seperate-video-versions', 'no-clean-infojson', 'no-keep-subs', 'no-certifi',

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@ -705,36 +705,40 @@ def timeconvert(timestr):
return timestamp
def sanitize_filename(s, restricted=False, is_id=False):
def sanitize_filename(s, restricted=False, is_id=NO_DEFAULT):
"""Sanitizes a string so it could be used as part of a filename.
If restricted is set, use a stricter subset of allowed characters.
Set is_id if this is not an arbitrary string, but an ID that should be kept
if possible.
@param restricted Use a stricter subset of allowed characters
@param is_id Whether this is an ID that should be kept unchanged if possible.
If unset, yt-dlp's new sanitization rules are in effect
"""
if s == '':
return ''
def replace_insane(char):
if restricted and char in ACCENT_CHARS:
return ACCENT_CHARS[char]
elif not restricted and char == '\n':
return ' '
return '\0 '
elif char == '?' or ord(char) < 32 or ord(char) == 127:
return ''
elif char == '"':
return '' if restricted else '\''
elif char == ':':
return '_-' if restricted else ' -'
return '\0_\0-' if restricted else '\0 \0-'
elif char in '\\/|*<>':
return '_'
if restricted and (char in '!&\'()[]{}$;`^,#' or char.isspace()):
return '_'
if restricted and ord(char) > 127:
return '_'
return '\0_'
if restricted and (char in '!&\'()[]{}$;`^,#' or char.isspace() or ord(char) > 127):
return '\0_'
return char
if s == '':
return ''
# Handle timestamps
s = re.sub(r'[0-9]+(?::[0-9]+)+', lambda m: m.group(0).replace(':', '_'), s)
s = re.sub(r'[0-9]+(?::[0-9]+)+', lambda m: m.group(0).replace(':', '_'), s) # Handle timestamps
result = ''.join(map(replace_insane, s))
if is_id is NO_DEFAULT:
result = re.sub('(\0.)(?:(?=\\1)..)+', r'\1', result) # Remove repeated substitute chars
STRIP_RE = '(?:\0.|[ _-])*'
result = re.sub(f'^\0.{STRIP_RE}|{STRIP_RE}\0.$', '', result) # Remove substitute chars from start/end
result = result.replace('\0', '') or '_'
if not is_id:
while '__' in result:
result = result.replace('__', '_')