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[YoutubeDL] Add generic video filtering (Fixes #4916) 

This functionality is intended to eventually encompass the current format filtering.
This commit is contained in:
Philipp Hagemeister 2015-02-10 03:32:21 +01:00
parent 8829650513
commit 347de4931c
5 changed files with 147 additions and 2 deletions
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32
test/test_utils.py
View File

@ -53,6 +53,7 @@ from youtube_dl.utils import (
version_tuple,
xpath_with_ns,
render_table,
match_str,
)
@ -459,6 +460,37 @@ ffmpeg version 2.4.4 Copyright (c) 2000-2014 the FFmpeg ...'''), '2.4.4')
'123 4\n'
'9999 51')
def test_match_str(self):
self.assertRaises(ValueError, match_str, 'xy>foobar', {})
self.assertFalse(match_str('xy', {'x': 1200}))
self.assertTrue(match_str('!xy', {'x': 1200}))
self.assertTrue(match_str('x', {'x': 1200}))
self.assertFalse(match_str('!x', {'x': 1200}))
self.assertTrue(match_str('x', {'x': 0}))
self.assertFalse(match_str('x>0', {'x': 0}))
self.assertFalse(match_str('x>0', {}))
self.assertTrue(match_str('x>?0', {}))
self.assertTrue(match_str('x>1K', {'x': 1200}))
self.assertFalse(match_str('x>2K', {'x': 1200}))
self.assertTrue(match_str('x>=1200 & x < 1300', {'x': 1200}))
self.assertFalse(match_str('x>=1100 & x < 1200', {'x': 1200}))
self.assertFalse(match_str('y=a212', {'y': 'foobar42'}))
self.assertTrue(match_str('y=foobar42', {'y': 'foobar42'}))
self.assertFalse(match_str('y!=foobar42', {'y': 'foobar42'}))
self.assertTrue(match_str('y!=foobar2', {'y': 'foobar42'}))
self.assertFalse(match_str(
'like_count > 100 & dislike_count <? 50 & description',
{'like_count': 90, 'description': 'foo'}))
self.assertTrue(match_str(
'like_count > 100 & dislike_count <? 50 & description',
{'like_count': 190, 'description': 'foo'}))
self.assertFalse(match_str(
'like_count > 100 & dislike_count <? 50 & description',
{'like_count': 190, 'dislike_count': 60, 'description': 'foo'}))
self.assertFalse(match_str(
'like_count > 100 & dislike_count <? 50 & description',
{'like_count': 190, 'dislike_count': 10}))
if __name__ == '__main__':
unittest.main()

14
youtube_dl/YoutubeDL.py
View File

@ -228,6 +228,11 @@ class YoutubeDL(object):
external_downloader: Executable of the external downloader to call.
listformats: Print an overview of available video formats and exit.
list_thumbnails: Print a table of all thumbnails and exit.
match_filter: A function that gets called with the info_dict of
every video.
If it returns a message, the video is ignored.
If it returns None, the video is downloaded.
match_filter_func in utils.py is one example for this.
The following parameters are not used by YoutubeDL itself, they are used by
@ -583,9 +588,16 @@ class YoutubeDL(object):
if max_views is not None and view_count > max_views:
return 'Skipping %s, because it has exceeded the maximum view count (%d/%d)' % (video_title, view_count, max_views)
if age_restricted(info_dict.get('age_limit'), self.params.get('age_limit')):
return 'Skipping "%s" because it is age restricted' % title
return 'Skipping "%s" because it is age restricted' % video_title
if self.in_download_archive(info_dict):
return '%s has already been recorded in archive' % video_title
match_filter = self.params.get('match_filter')
if match_filter is not None:
ret = match_filter(info_dict)
if ret is not None:
return ret
return None
@staticmethod

7
youtube_dl/__init__.py
View File

@ -23,9 +23,10 @@ from .compat import (
)
from .utils import (
DateRange,
DEFAULT_OUTTMPL,
decodeOption,
DEFAULT_OUTTMPL,
DownloadError,
match_filter_func,
MaxDownloadsReached,
preferredencoding,
read_batch_urls,
@ -247,6 +248,9 @@ def _real_main(argv=None):
xattr # Confuse flake8
except ImportError:
parser.error('setting filesize xattr requested but python-xattr is not available')
match_filter = (
None if opts.match_filter is None
else match_filter_func(opts.match_filter))
ydl_opts = {
'usenetrc': opts.usenetrc,
@ -344,6 +348,7 @@ def _real_main(argv=None):
'list_thumbnails': opts.list_thumbnails,
'playlist_items': opts.playlist_items,
'xattr_set_filesize': opts.xattr_set_filesize,
'match_filter': match_filter,
}
with YoutubeDL(ydl_opts) as ydl:

19
youtube_dl/options.py
View File

@ -244,6 +244,25 @@ def parseOpts(overrideArguments=None):
'--max-views',
metavar='COUNT', dest='max_views', default=None, type=int,
help='Do not download any videos with more than COUNT views')
selection.add_option(
'--match-filter',
metavar='FILTER', dest='match_filter', default=None,
help=(
'(Experimental) Generic video filter. '
'Specify any key (see help for -o for a list of available keys) to'
' match if the key is present, '
'!key to check if the key is not present,'
'key > NUMBER (like "comment_count > 12", also works with '
'>=, <, <=, !=, =) to compare against a number, and '
'& to require multiple matches. '
'Values which are not known are excluded unless you'
' put a question mark (?) after the operator.'
'For example, to only match videos that have been liked more than '
'100 times and disliked less than 50 times (or the dislike '
'functionality is not available at the given service), but who '
'also have a description, use --match-filter '
'"like_count > 100 & dislike_count <? 50 & description" .'
))
selection.add_option(
'--no-playlist',
action='store_true', dest='noplaylist', default=False,

77
youtube_dl/utils.py
View File

@ -17,6 +17,7 @@ import io
import json
import locale
import math
import operator
import os
import pipes
import platform
@ -1678,3 +1679,79 @@ def render_table(header_row, data):
max_lens = [max(len(compat_str(v)) for v in col) for col in zip(*table)]
format_str = ' '.join('%-' + compat_str(ml + 1) + 's' for ml in max_lens[:-1]) + '%s'
return '\n'.join(format_str % tuple(row) for row in table)
def _match_one(filter_part, dct):
COMPARISON_OPERATORS = {
'<': operator.lt,
'<=': operator.le,
'>': operator.gt,
'>=': operator.ge,
'=': operator.eq,
'!=': operator.ne,
}
operator_rex = re.compile(r'''(?x)\s*
(?P<key>[a-z_]+)
\s*(?P<op>%s)(?P<none_inclusive>\s*\?)?\s*
(?:
(?P<intval>[0-9.]+(?:[kKmMgGtTpPeEzZyY]i?[Bb]?)?)|
(?P<strval>(?![0-9.])[a-z0-9A-Z]*)
)
\s*$
''' % '|'.join(map(re.escape, COMPARISON_OPERATORS.keys())))
m = operator_rex.search(filter_part)
if m:
op = COMPARISON_OPERATORS[m.group('op')]
if m.group('strval') is not None:
if m.group('op') not in ('=', '!='):
raise ValueError(
'Operator %s does not support string values!' % m.group('op'))
comparison_value = m.group('strval')
else:
try:
comparison_value = int(m.group('intval'))
except ValueError:
comparison_value = parse_filesize(m.group('intval'))
if comparison_value is None:
comparison_value = parse_filesize(m.group('intval') + 'B')
if comparison_value is None:
raise ValueError(
'Invalid integer value %r in filter part %r' % (
m.group('intval'), filter_part))
actual_value = dct.get(m.group('key'))
if actual_value is None:
return m.group('none_inclusive')
return op(actual_value, comparison_value)
UNARY_OPERATORS = {
'': lambda v: v is not None,
'!': lambda v: v is None,
}
operator_rex = re.compile(r'''(?x)\s*
(?P<op>%s)\s*(?P<key>[a-z_]+)
\s*$
''' % '|'.join(map(re.escape, UNARY_OPERATORS.keys())))
m = operator_rex.search(filter_part)
if m:
op = UNARY_OPERATORS[m.group('op')]
actual_value = dct.get(m.group('key'))
return op(actual_value)
raise ValueError('Invalid filter part %r' % filter_part)
def match_str(filter_str, dct):
""" Filter a dictionary with a simple string syntax. Returns True (=passes filter) or false """
return all(
_match_one(filter_part, dct) for filter_part in filter_str.split('&'))
def match_filter_func(filter_str):
def _match_func(info_dict):
if match_str(filter_str, info_dict):
return None
else:
video_title = info_dict.get('title', info_dict.get('id', 'video'))
return '%s does not pass filter %s, skipping ..' % (video_title, filter_str)
return _match_func