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Raphaƫl G. Git Repositories - youtubedl/blob - youtube_dl/extractor/generic.py
4 from .common
import InfoExtractor
13 class GenericIE(InfoExtractor
):
14 """Generic last-resort information extractor."""
19 def report_download_webpage(self
, video_id
):
20 """Report webpage download."""
21 if not self
._downloader
.params
.get('test', False):
22 self
._downloader
.report_warning(u
'Falling back on generic information extractor.')
23 super(GenericIE
, self
).report_download_webpage(video_id
)
25 def report_following_redirect(self
, new_url
):
26 """Report information extraction."""
27 self
._downloader
.to_screen(u
'[redirect] Following redirect to %s' % new_url
)
29 def _test_redirect(self
, url
):
30 """Check if it is a redirect, like url shorteners, in case return the new url."""
31 class HeadRequest(compat_urllib_request
.Request
):
35 class HEADRedirectHandler(compat_urllib_request
.HTTPRedirectHandler
):
37 Subclass the HTTPRedirectHandler to make it use our
38 HeadRequest also on the redirected URL
40 def redirect_request(self
, req
, fp
, code
, msg
, headers
, newurl
):
41 if code
in (301, 302, 303, 307):
42 newurl
= newurl
.replace(' ', '%20')
43 newheaders
= dict((k
,v
) for k
,v
in req
.headers
.items()
44 if k
.lower() not in ("content-length", "content-type"))
45 return HeadRequest(newurl
,
47 origin_req_host
=req
.get_origin_req_host(),
50 raise compat_urllib_error
.HTTPError(req
.get_full_url(), code
, msg
, headers
, fp
)
52 class HTTPMethodFallback(compat_urllib_request
.BaseHandler
):
54 Fallback to GET if HEAD is not allowed (405 HTTP error)
56 def http_error_405(self
, req
, fp
, code
, msg
, headers
):
60 newheaders
= dict((k
,v
) for k
,v
in req
.headers
.items()
61 if k
.lower() not in ("content-length", "content-type"))
62 return self
.parent
.open(compat_urllib_request
.Request(req
.get_full_url(),
64 origin_req_host
=req
.get_origin_req_host(),
68 opener
= compat_urllib_request
.OpenerDirector()
69 for handler
in [compat_urllib_request
.HTTPHandler
, compat_urllib_request
.HTTPDefaultErrorHandler
,
70 HTTPMethodFallback
, HEADRedirectHandler
,
71 compat_urllib_request
.HTTPErrorProcessor
, compat_urllib_request
.HTTPSHandler
]:
72 opener
.add_handler(handler())
74 response
= opener
.open(HeadRequest(url
))
76 raise ExtractorError(u
'Invalid URL protocol')
77 new_url
= response
.geturl()
82 self
.report_following_redirect(new_url
)
85 def _real_extract(self
, url
):
86 new_url
= self
._test
_redirect
(url
)
87 if new_url
: return [self
.url_result(new_url
)]
89 video_id
= url
.split('/')[-1]
91 webpage
= self
._download
_webpage
(url
, video_id
)
93 # since this is the last-resort InfoExtractor, if
94 # this error is thrown, it'll be thrown here
95 raise ExtractorError(u
'Invalid URL: %s' % url
)
97 self
.report_extraction(video_id
)
98 # Start with something easy: JW Player in SWFObject
99 mobj
= re
.search(r
'flashvars: [\'"](?:.*&)?file=(http[^\'"&]*)', webpage)
101 # Broaden the search a little bit
102 mobj = re.search(r'[^A
-Za
-z0
-9]?
(?
:file|source
)=(http
[^
\'"&]*)', webpage)
104 # Broaden the search a little bit: JWPlayer JS loader
105 mobj = re.search(r'[^A-Za-z0-9]?file:\s*["\'](http
[^
\'"&]*)', webpage)
107 # Try to find twitter cards info
108 mobj = re.search(r'<meta (?:property|name)="twitter
:player
:stream
" (?:content|value)="(.+?
)"', webpage)
110 # We look for Open Graph info:
111 # We have to match any number spaces between elements, some sites try to align them (eg.: statigr.am)
112 m_video_type = re.search(r'<meta.*?property="og
:video
:type".*?content="video
/(.*?
)"', webpage)
113 # We only look in og:video if the MIME type is a video, don't try if it's a Flash player:
114 if m_video_type is not None:
115 mobj = re.search(r'<meta.*?property="og
:video
".*?content="(.*?
)"', webpage)
117 raise ExtractorError(u'Invalid URL: %s' % url)
119 # It's possible that one of the regexes
120 # matched, but returned an empty group:
121 if mobj.group(1) is None:
122 raise ExtractorError(u'Invalid URL: %s' % url)
124 video_url = compat_urllib_parse.unquote(mobj.group(1))
125 video_id = os.path.basename(video_url)
127 # here's a fun little line of code for you:
128 video_extension = os.path.splitext(video_id)[1][1:]
129 video_id = os.path.splitext(video_id)[0]
131 # it's tempting to parse this further, but you would
132 # have to take into account all the variations like
133 # Video Title - Site Name
134 # Site Name | Video Title
135 # Video Title - Tagline | Site Name
136 # and so on and so forth; it's just not practical
137 video_title = self._html_search_regex(r'<title>(.*)</title>',
138 webpage, u'video title')
140 # video uploader is domain name
141 video_uploader = self._search_regex(r'(?:https?://)?([^/]*)/.*',
142 url, u'video uploader')
147 'uploader': video_uploader,
149 'title': video_title,
150 'ext': video_extension,