|
- #!/usr/bin/env python3
- import re
- import sys
-
-
- if any(x in sys.argv for x in ['--help', '-h', '-?', 'help']):
- print('Usage: youtube-extract [massage|removenonyt]', file = sys.stderr)
- print(file = sys.stderr)
- print("In 'massage' mode (default), extracts any references to YouTube videos, channels, and playlists from the URLs on stdin and prints them on stdout.", file = sys.stderr)
- print('Lines that don\'t seem to contain references to such YouTube things are printed on stderr.', file = sys.stderr)
- print(file = sys.stderr)
- print("In 'removenonyt' mode, prints all URLs that look like they are or contain YouTube URLs on stdout.", file = sys.stderr)
- sys.exit(1)
-
-
- # For all patterns: don't use \\? for an optional backslash (if needed) as it breaks the automatic pattern rewrite for parameters below. Use [\\]? instead.
-
- # Channel/user URLs; the protocol and domain are stripped and replaced below.
- channelPattern = re.compile('|'.join([
- r'//www\.youtube\.com/c/[^/?]+',
- r'//www\.youtube\.com/user/[^/?]+',
- r'//www\.youtube\.com/channel/UC[^/?]+',
- r'//www\.youtube\.com/(?!(c|user|channel|watch(_popup)?(\.php)?|embed|e|v|redirect)$)[^/?]+(?=/?$)',
- ]))
-
- # Make sure that the last 11 chars of the match are always the video ID (because Python's re doesn't support \K).
- # If necessary, use lookahead assertions to match further stuff after the video ID.
- videoPattern = re.compile('|'.join([
- # Normal watch URL
- r'//www\.youtube\.com/watch(_popup)?(\.php)?/?\?(.*&)?v=[0-9A-Za-z_-]{11}',
- r'//www\.youtube\.com/watch/[0-9A-Za-z_-]{11}',
- # Embeds
- r'//www\.youtube\.com/e(mbed)?/(?!videoseries\?)[0-9A-Za-z_-]{11}',
- r'//www\.youtube\.com/embed/?\?(.*&)?v=[0-9A-Za-z_-]{11}',
- # Shortener
- r'//youtu\.be/[0-9A-Za-z_-]{11}',
- # Old (Flash) embeds
- r'//www\.youtube\.com/v/[0-9A-Za-z_-]{11}',
- # Redirects from links in video descriptions
- r'//www\.youtube\.com/redirect\?(.*&)?v=[0-9A-Za-z_-]{11}(?=&|$)',
- # Tracking and other crap
- r'//www\.youtube\.com/(ptracking|set_awesome)\?(.*&)?video_id=[0-9A-Za-z_-]{11}',
- r'//www\.youtube\.com/api/timedtext\?(.*&)?v=[0-9A-Za-z_-]{11}',
- r'//www\.youtube\.com/(my_videos_)?edit\?(.*&)?video_id=[0-9A-Za-z_-]{11}',
- # Generic v parameter on watch URLs including with percent encoding; this covers e.g. google.com/url?... or the oEmbed
- r'/watch\?(.*&)?v=[0-9A-Za-z_-]{11}',
- ]))
-
- noisePattern = re.compile('|'.join([
- r'^//www\.youtube\.com/s/(desktop|player)/[0-9a-f]+/',
- r'^//www\.youtube\.com/s/gaming/emoji/',
- r'^//www\.youtube\.com/redirect\?event=channel_banner&',
- r'^//www\.youtube\.com/redirect\?(?=(.*&)?event=video_description(&|$))(?!(.*&)?v=)',
- r'^//www\.youtube\.com/yts/',
- r'^//www\.youtube\.com/img/',
- r'^//www\.youtube\.com/youtubei/',
- r'^//www\.youtube\.com/ads/',
- r'^//www\.youtube\.com/(player|iframe)_api\?',
- r'^//www\.youtube\.com/error(_204)?/?\?',
- r'^//www\.youtube\.com/(about|t|howyoutubeworks)[/?]',
- r'^//www\.youtube\.com/results/?\?',
- r'^//www\.youtube\.com/premium/?\?',
- r'^//www\.youtube\.com/?(\?|$)',
- r'^//www\.youtube\.com/embed/("|%22|' r"'|%27" r')(%20)?(\+|%3B)', # JS extraction stuff
- r'^//consent\.(youtube|google)\.com/',
- ]))
-
-
- matchers = [
- # (pattern, paramSearch, function(match) -> output str or None); returning None stops further processing
- [channelPattern, True, lambda m: 'https://www.youtube.com/' + m[0].split('/', 3)[-1]],
- [videoPattern, True, lambda m: f'https://www.youtube.com/watch?v={m[0][-11:]}'],
- [re.compile(r'//www\.youtube\.com/(playlist|embed(/videoseries|/\+lastest|/playlist)?/?)\?(.*&)?list=UU[0-9A-Za-z_-]+'), True, lambda m: f'https://www.youtube.com/channel/UC{m[0].rsplit("=", 1)[1][2:]}'],
- [re.compile(r'//www\.youtube\.com/(playlist|embed(/videoseries|/\+lastest|/playlist)?/?)\?(.*&)?list=(PL|FL|RD|OL)[0-9A-Za-z_-]+'), True, lambda m: f'https://www.youtube.com/playlist?list={m[0].rsplit("=", 1)[1]}'],
- [re.compile(r'//www\.youtube\.com/embed/?\?(?=(.*&)?listType=user_uploads(&|$))(.*&)?list=[^&]+'), True, lambda m: f'https://www.youtube.com/user/{m[0].rsplit("=", 1)[1]}'],
- [re.compile(r'//www\.youtube\.com/rss/user/[^/]+'), True, lambda m: f'https://www.youtube.com/user/{m[0].rsplit("/", 1)[1]}'],
- [re.compile(r'//www\.youtube\.com/feeds/videos\.xml\?(.*&)?channel_id=UC[0-9A-Za-z_-]+'), True, lambda m: f'https://www.youtube.com/channel/{m[0].rsplit("=", 1)[1]}'],
- [re.compile(r'//www\.youtube\.com(/view_play_list\?p=|/playlist\?(.*&)?list=)[0-9A-F]{16}(?=(&|$))'), True, lambda m: f'https://www.youtube.com/playlist?list=PL{m[0].rsplit("=", 1)[1]}'],
- [re.compile(r'^//i\.ytimg\.com/vi/([0-9A-Za-z_-]{11})/'), False, lambda m: f'https://www.youtube.com/watch?v={m[1]}'],
- [noisePattern, False, lambda m: None],
- ]
-
- # Compile second pattern for parameters if needed
- for e in matchers:
- pattern, paramSearch, f = e
- if paramSearch:
- p2 = pattern.pattern.replace('//', '/{1,2}').replace('/', '(/|%2F)').replace(':', '(:|%3A)').replace(r'\?', r'(\?|%3F)')
- p2 = re.sub(r'(?<!\(\?)=', '(=|%3D)', p2)
- e[1] = re.compile(p2.replace('&', '(&|%26)'), pattern.flags)
- else:
- e[1] = None
-
- # Only one slash before so it still matches inside URLs when slashes were collapsed.
- domainPattern = re.compile(r'/(www\.)?youtube\.(com|de|fr|co\.uk|it|es|at|pt|gr|hu|ro|pl|dk|no|se|fi|ee|lt|lv|ru|by|cz|sk|si|rs|hr|ca)/')
-
- for origLine in sys.stdin:
- origLine = origLine.strip()
- line = re.sub(r'^https?://', '//', origLine)
- line = domainPattern.sub('/www.youtube.com/', line)
- if sys.argv[1] == 'massage':
- hadMatches = False
- for pattern1, pattern2, f in matchers:
- patterns = [pattern1]
- if pattern2:
- patterns.append(pattern2)
- results = set()
- for pattern in patterns:
- m = pattern.search(line)
- if m:
- hadMatches = True
- r = f(m)
- if r in results:
- continue
- results.add(r)
- if r is None:
- break
- print(r)
- if None in results:
- break
- if not hadMatches:
- print(origLine, file = sys.stderr)
- elif sys.argv[1] == 'removenonyt':
- if any(x in line for x in ('/www.youtube.com/', '/youtu.be/', '%2Fwww.youtube.com%2F', '%2Fyoutu.be%2F')):
- print(origLine)
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