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[YoutubeDL] Add support for string formatting operations in output template

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Sergey M․ 2016-03-06 03:52:42 +06:00 • committed by Sergey M
parent 28572a1a0b
commit d0d9ade486
2 changed files with 49 additions and 1 deletions
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36
youtube_dl/YoutubeDL.py
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@ -33,6 +33,7 @@ from .compat import (
compat_get_terminal_size,
compat_http_client,
compat_kwargs,
compat_numeric_types,
compat_os_name,
compat_str,
compat_tokenize_tokenize,
@ -609,12 +610,45 @@ class YoutubeDL(object):
compat_str(v),
restricted=self.params.get('restrictfilenames'),
is_id=(k == 'id'))
template_dict = dict((k, sanitize(k, v))
template_dict = dict((k, v if isinstance(v, compat_numeric_types) else sanitize(k, v))
for k, v in template_dict.items()
if v is not None and not isinstance(v, (list, tuple, dict)))
template_dict = collections.defaultdict(lambda: 'NA', template_dict)
outtmpl = self.params.get('outtmpl', DEFAULT_OUTTMPL)
NUMERIC_FIELDS = set((
'width', 'height', 'tbr', 'abr', 'asr', 'vbr', 'fps', 'filesize', 'filesize_approx',
'upload_year', 'upload_month', 'upload_day',
'duration', 'view_count', 'like_count', 'dislike_count', 'repost_count',
'average_rating', 'comment_count', 'age_limit',
'start_time', 'end_time',
'chapter_number', 'season_number', 'episode_number',
))
# Missing numeric fields used together with integer presentation types
# in format specification will break the argument substitution since
# string 'NA' is returned for missing fields. We will patch output
# template for missing fields to meet string presentation type.
for numeric_field in NUMERIC_FIELDS:
if numeric_field not in template_dict:
# As of [1] format syntax is:
# %[mapping_key][conversion_flags][minimum_width][.precision][length_modifier]type
# 1. https://docs.python.org/2/library/stdtypes.html#string-formatting
FORMAT_RE = r'''(?x)
(?<!%)
%
\({0}\) # mapping key
(?:[#0\-+ ]+)? # conversion flags (optional)
(?:\d+)? # minimum field width (optional)
(?:\.\d+)? # precision (optional)
[hlL]? # length modifier (optional)
[diouxXeEfFgGcrs%] # conversion type
'''
outtmpl = re.sub(
FORMAT_RE.format(numeric_field),
r'%({0})s'.format(numeric_field), outtmpl)
tmpl = compat_expanduser(outtmpl)
filename = tmpl % template_dict
# Temporary fix for #4787