R-yan/l1ving_youtube-dl
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Fix {playlist_index:03} breaking if unavailable

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Using the 'NA' string when an item is unavailable would break with format specifiers such as {playlist_index:03} or {upload_date:%Y} since strings don't allow those formatters.
Instead of using 'NA', use a class that always returns 'NA' on str() or format().
(The str() part can probably be removed; it's just in case %s is used somewhere else in the code, now or in a future.)

Also, renamed class _Int_digits to a more meaningful and consistent _Int_formatter.
This commit is contained in:
cousteau 2015-10-24 18:46:41 +02:00
parent 946745f068
commit 50875cf354
1 changed files with 15 additions and 4 deletions
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19
youtube_dl/YoutubeDL.py
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@ -91,7 +91,9 @@ from .postprocessor import (
from .version import __version__
class _Int_digits(int):
# Special formatting classes to be used in output file name formatting
class _Int_formatter(int):
"""int-like type that gets formatted with a default fixed width
(to be used within YoutubeDL.prepare_filename() so that {autonumber:03}
prints 001 but {autonumber} defaults to 00001 rather than 1)
@ -103,6 +105,15 @@ class _Int_digits(int):
def __str__(self):
return "{0:0{1}}".format(self, self.digits)
class _NA_formatter(object):
"""Class that always yields 'NA' when formatted as %s or {}
to prevent stuff such as {upload_date:%Y} from yielding errors"""
def __format__(self, fmt):
return 'NA'
def __str__(self, fmt):
return 'NA' # just in case; can probably be removed
class YoutubeDL(object):
"""YoutubeDL class.
@ -560,9 +571,9 @@ class YoutubeDL(object):
autonumber_size = self.params.get('autonumber_size')
if autonumber_size is None:
autonumber_size = 5
template_dict['autonumber'] = _Int_digits(self._num_downloads, autonumber_size)
template_dict['autonumber'] = _Int_formatter(self._num_downloads, autonumber_size)
if template_dict.get('playlist_index') is not None:
template_dict['playlist_index'] = _Int_digits(template_dict['playlist_index'], len(str(template_dict['n_entries'])))
template_dict['playlist_index'] = _Int_formatter(template_dict['playlist_index'], len(str(template_dict['n_entries'])))
if template_dict.get('resolution') is None:
if template_dict.get('width') and template_dict.get('height'):
template_dict['resolution'] = '%dx%d' % (template_dict['width'], template_dict['height'])
@ -583,7 +594,7 @@ class YoutubeDL(object):
template_dict = dict((k, sanitize(k, v))
for k, v in template_dict.items()
if v is not None)
template_dict = collections.defaultdict(lambda: 'NA', template_dict)
template_dict = collections.defaultdict(_NA_formatter, template_dict)
outtmpl = self.params.get('outtmpl', DEFAULT_OUTTMPL)
filename = sanitize_path(string.Formatter().vformat(outtmpl, None, template_dict))