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https://github.com/ytdl-org/youtube-dl
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implement fallbacks and defaults in _search_regex
This commit is contained in:
Filippo Valsorda
parent
ac3e9394e7
commit
468e2e926b
@ -191,19 +191,37 @@ class InfoExtractor(object):
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video_info['title'] = playlist_title
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return video_info
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def _search_regex(self, pattern, text, name, fatal=True, flags=0):
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"""Extract a field from some text based on regex"""
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mobj = re.search(pattern, text, flags)
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if mobj is None and fatal:
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raise ExtractorError(u'Unable to extract %s; '
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u'please report this issue on GitHub.' % name)
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elif mobj is None:
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self._downloader.report_warning(u'unable to extract %s; '
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u'please report this issue on GitHub.' % name)
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return None
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def _search_regex(self, pattern, string, name, default=None, fatal=True, flags=0):
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"""
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Perform a regex search on the given string, using a single or a list of
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patterns returning the first matching group.
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In case of failure return a default value or raise a WARNING or a
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ExtractorError, depending on fatal, specifying the field name.
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"""
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if isinstance(pattern, (str, compat_str, compiled_regex_type)):
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mobj = re.search(pattern, string, flags)
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else:
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# return the first matched group
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for p in pattern:
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mobj = re.search(p, string, flags)
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if mobj: break
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if sys.stderr.isatty() and os.name != 'nt':
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_name = u'\033[0;34m%s\033[0m' % name
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else:
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_name = name
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if mobj:
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# return the first matching group
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return next(g for g in mobj.groups() if g is not None)
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elif default is not None:
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return default
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elif fatal:
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raise ExtractorError(u'Unable to extract %s; '
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u'please report this issue on GitHub.' % _name)
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else:
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self._downloader.report_warning(u'unable to extract %s; '
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u'please report this issue on GitHub.' % _name)
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return None
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class SearchInfoExtractor(InfoExtractor):
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"""
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@ -2820,12 +2838,8 @@ class StanfordOpenClassroomIE(InfoExtractor):
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note='Downloading course info page',
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errnote='Unable to download course info page')
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# TODO: implement default_value in search_regex
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m = re.search('<h1>([^<]+)</h1>', coursepage)
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if m:
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info['title'] = unescapeHTML(m.group(1))
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else:
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info['title'] = info['id']
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info['title'] = self._search_regex('<h1>([^<]+)</h1>', coursepage, 'title', default=info['id'])
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info['title'] = unescapeHTML(info['title'])
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info['description'] = self._search_regex('<description>([^<]+)</description>',
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coursepage, u'description', fatal=False)
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@ -3108,12 +3122,8 @@ class GooglePlusIE(InfoExtractor):
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# Extract title
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# Get the first line for title
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# TODO: implement default_value in search_regex
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video_title = u'NA'
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pattern = r'<meta name\=\"Description\" content\=\"(.*?)[\n<"]'
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mobj = re.search(pattern, webpage)
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if mobj:
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video_title = mobj.group(1)
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video_title = self._search_regex(r'<meta name\=\"Description\" content\=\"(.*?)[\n<"]',
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webpage, 'title', default=u'NA')
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# Step 2, Stimulate clicking the image box to launch video
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video_page = self._search_regex('"(https\://plus\.google\.com/photos/.*?)",,"image/jpeg","video"\]',
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@ -3167,23 +3177,21 @@ class NBAIE(InfoExtractor):
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video_url = u'http://ht-mobile.cdn.turner.com/nba/big' + video_id + '_nba_1280x720.mp4'
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# TODO: implement default_value in search_regex
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def _findProp(rexp, default=None):
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m = re.search(rexp, webpage)
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if m:
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return unescapeHTML(m.group(1))
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else:
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return default
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shortened_video_id = video_id.rpartition('/')[2]
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title = _findProp(r'<meta property="og:title" content="(.*?)"', shortened_video_id).replace('NBA.com: ', '')
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title = self._search_regex(r'<meta property="og:title" content="(.*?)"',
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webpage, 'title', default=shortened_video_id).replace('NBA.com: ', '')
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uploader_date = self._search_regex(r'<b>Date:</b> (.*?)</div>', webpage, 'upload_date', fatal=False)
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description = self._search_regex(r'<div class="description">(.*?)</h1>', webpage, 'description', fatal=False)
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info = {
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'id': shortened_video_id,
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'url': video_url,
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'ext': 'mp4',
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'title': title,
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'uploader_date': _findProp(r'<b>Date:</b> (.*?)</div>'),
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'description': _findProp(r'<div class="description">(.*?)</h1>'),
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'uploader_date': uploader_date,
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'description': description,
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}
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return [info]
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@ -3335,13 +3343,9 @@ class FunnyOrDieIE(InfoExtractor):
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webpage, u'video URL', flags=re.DOTALL)
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video_url = unescapeHTML(video_url)
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# TODO: implement fallbacks in regex_search
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m = re.search(r"<h1 class='player_page_h1'.*?>(?P<title>.*?)</h1>", webpage, flags=re.DOTALL)
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if not m:
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m = re.search(r'<title>(?P<title>[^<]+?)</title>', webpage)
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if not m:
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raise ExtractorError(u'Cannot find video title')
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title = clean_html(m.group('title'))
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title = self._search_regex((r"<h1 class='player_page_h1'.*?>(?P<title>.*?)</h1>",
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r'<title>(?P<title>[^<]+?)</title>'), webpage, 'title', flags=re.DOTALL)
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title = clean_html(title)
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video_description = self._search_regex(r'<meta property="og:description" content="(?P<desc>.*?)"',
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webpage, u'description', flags=re.DOTALL)
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@ -154,6 +154,9 @@ def compat_ord(c):
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if type(c) is int: return c
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else: return ord(c)
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# This is not clearly defined otherwise
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compiled_regex_type = type(re.compile(''))
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std_headers = {
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'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20100101 Firefox/10.0',
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'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
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