text: from __future__ import unicode_literals
  
  import re
  
  from .common import InfoExtractor
  from .theplatform import ThePlatformIE
  from .adobepass import AdobePassIE
  from ..compat import compat_urllib_parse_urlparse
  from ..utils import (
      find_xpath_attr,
      lowercase_escape,
      smuggle_url,
      unescapeHTML,
      update_url_query,
      int_or_none,
  )
  
  
  class NBCIE(AdobePassIE):
      _VALID_URL = r'https?://(?:www\.)?nbc\.com/(?:[^/]+/)+(?P<id>n?\d+)'
  
      _TESTS = [
          {
              'url': 'http://www.nbc.com/the-tonight-show/video/jimmy-fallon-surprises-fans-at-ben-jerrys/2848237',
              'info_dict': {
                  'id': '2848237',
                  'ext': 'mp4',
                  'title': 'Jimmy Fallon Surprises Fans at Ben & Jerry\'s',
                  'description': 'Jimmy gives out free scoops of his new "Tonight Dough" ice cream flavor by surprising customers at the Ben & Jerry\'s scoop shop.',
                  'timestamp': 1424246400,
                  'upload_date': '20150218',
                  'uploader': 'NBCU-COM',
              },
              'params': {
                  # m3u8 download
                  'skip_download': True,
              },
          },
          {
              'url': 'http://www.nbc.com/the-tonight-show/episodes/176',
              'info_dict': {
                  'id': '176',
                  'ext': 'flv',
                  'title': 'Ricky Gervais, Steven Van Zandt, ILoveMakonnen',
                  'description': 'A brand new episode of The Tonight Show welcomes Ricky Gervais, Steven Van Zandt and ILoveMakonnen.',
              },
              'skip': '404 Not Found',
          },
          {
              'url': 'http://www.nbc.com/saturday-night-live/video/star-wars-teaser/2832821',
              'info_dict': {
                  'id': '2832821',
                  'ext': 'mp4',
                  'title': 'Star Wars Teaser',
                  'description': 'md5:0b40f9cbde5b671a7ff62fceccc4f442',
                  'timestamp': 1417852800,
                  'upload_date': '20141206',
                  'uploader': 'NBCU-COM',
              },
              'params': {
                  # m3u8 download
                  'skip_download': True,
              },
              'skip': 'Only works from US',
          },
          {
              # This video has expired but with an escaped embedURL
              'url': 'http://www.nbc.com/parenthood/episode-guide/season-5/just-like-at-home/515',
              'only_matching': True,
          },
          {
              # HLS streams requires the 'hdnea3' cookie
              'url': 'http://www.nbc.com/Kings/video/goliath/n1806',
              'info_dict': {
                  'id': '101528f5a9e8127b107e98c5e6ce4638',
                  'ext': 'mp4',
                  'title': 'Goliath',
                  'description': 'When an unknown soldier saves the life of the King\'s son in battle, he\'s thrust into the limelight and politics of the kingdom.',
                  'timestamp': 1237100400,
                  'upload_date': '20090315',
                  'uploader': 'NBCU-COM',
              },
              'params': {
                  'skip_download': True,
              },
              'skip': 'Only works from US',
          }
      ]
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
          webpage = self._download_webpage(url, video_id)
          info = {
              '_type': 'url_transparent',
              'ie_key': 'ThePlatform',
              'id': video_id,
          }
          video_data = None
          preload = self._search_regex(
              r'PRELOAD\s*=\s*({.+})', webpage, 'preload data', default=None)
          if preload:
              preload_data = self._parse_json(preload, video_id)
              path = compat_urllib_parse_urlparse(url).path.rstrip('/')
              entity_id = preload_data.get('xref', {}).get(path)
              video_data = preload_data.get('entities', {}).get(entity_id)
          if video_data:
              query = {
                  'mbr': 'true',
                  'manifest': 'm3u',
              }
              video_id = video_data['guid']
              title = video_data['title']
              if video_data.get('entitlement') == 'auth':
                  resource = self._get_mvpd_resource(
                      'nbcentertainment', title, video_id,
                      video_data.get('vChipRating'))
                  query['auth'] = self._extract_mvpd_auth(
                      url, video_id, 'nbcentertainment', resource)
              theplatform_url = smuggle_url(update_url_query(
                  'http://link.theplatform.com/s/NnzsPC/media/guid/2410887629/' + video_id,
                  query), {'force_smil_url': True})
              info.update({
                  'id': video_id,
                  'title': title,
                  'url': theplatform_url,
                  'description': video_data.get('description'),
                  'keywords': video_data.get('keywords'),
                  'season_number': int_or_none(video_data.get('seasonNumber')),
                  'episode_number': int_or_none(video_data.get('episodeNumber')),
                  'series': video_data.get('showName'),
              })
          else:
              theplatform_url = unescapeHTML(lowercase_escape(self._html_search_regex(
                  [
                      r'(?:class="video-player video-player-full" data-mpx-url|class="player" src)="(.*?)"',
                      r'<iframe[^>]+src="((?:https?:)?//player\.theplatform\.com/[^"]+)"',
                      r'"embedURL"\s*:\s*"([^"]+)"'
                  ],
                  webpage, 'theplatform url').replace('_no_endcard', '').replace('\\/', '/')))
              if theplatform_url.startswith('//'):
                  theplatform_url = 'http:' + theplatform_url
              info['url'] = smuggle_url(theplatform_url, {'source_url': url})
          return info
  
  
  class NBCSportsVPlayerIE(InfoExtractor):
      _VALID_URL = r'https?://vplayer\.nbcsports\.com/(?:[^/]+/)+(?P<id>[0-9a-zA-Z_]+)'
  
      _TESTS = [{
          'url': 'https://vplayer.nbcsports.com/p/BxmELC/nbcsports_share/select/9CsDKds0kvHI',
          'info_dict': {
              'id': '9CsDKds0kvHI',
              'ext': 'flv',
              'description': 'md5:df390f70a9ba7c95ff1daace988f0d8d',
              'title': 'Tyler Kalinoski hits buzzer-beater to lift Davidson',
              'timestamp': 1426270238,
              'upload_date': '20150313',
              'uploader': 'NBCU-SPORTS',
          }
      }, {
          'url': 'http://vplayer.nbcsports.com/p/BxmELC/nbc_embedshare/select/_hqLjQ95yx8Z',
          'only_matching': True,
      }]
  
      @staticmethod
      def _extract_url(webpage):
          iframe_m = re.search(
              r'<iframe[^>]+src="(?P<url>https?://vplayer\.nbcsports\.com/[^"]+)"', webpage)
          if iframe_m:
              return iframe_m.group('url')
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
          webpage = self._download_webpage(url, video_id)
          theplatform_url = self._og_search_video_url(webpage)
          return self.url_result(theplatform_url, 'ThePlatform')
  
  
  class NBCSportsIE(InfoExtractor):
      # Does not include https because its certificate is invalid
      _VALID_URL = r'https?://(?:www\.)?nbcsports\.com//?(?:[^/]+/)+(?P<id>[0-9a-z-]+)'
  
      _TEST = {
          'url': 'http://www.nbcsports.com//college-basketball/ncaab/tom-izzo-michigan-st-has-so-much-respect-duke',
          'info_dict': {
              'id': 'PHJSaFWbrTY9',
              'ext': 'flv',
              'title': 'Tom Izzo, Michigan St. has \'so much respect\' for Duke',
              'description': 'md5:ecb459c9d59e0766ac9c7d5d0eda8113',
              'uploader': 'NBCU-SPORTS',
              'upload_date': '20150330',
              'timestamp': 1427726529,
          }
      }
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
          webpage = self._download_webpage(url, video_id)
          return self.url_result(
              NBCSportsVPlayerIE._extract_url(webpage), 'NBCSportsVPlayer')
  
  
  class CSNNEIE(InfoExtractor):
      _VALID_URL = r'https?://(?:www\.)?csnne\.com/video/(?P<id>[0-9a-z-]+)'
  
      _TEST = {
          'url': 'http://www.csnne.com/video/snc-evening-update-wright-named-red-sox-no-5-starter',
          'info_dict': {
              'id': 'yvBLLUgQ8WU0',
              'ext': 'mp4',
              'title': 'SNC evening update: Wright named Red Sox\' No. 5 starter.',
              'description': 'md5:1753cfee40d9352b19b4c9b3e589b9e3',
              'timestamp': 1459369979,
              'upload_date': '20160330',
              'uploader': 'NBCU-SPORTS',
          }
      }
  
      def _real_extract(self, url):
          display_id = self._match_id(url)
          webpage = self._download_webpage(url, display_id)
          return {
              '_type': 'url_transparent',
              'ie_key': 'ThePlatform',
              'url': self._html_search_meta('twitter:player:stream', webpage),
              'display_id': display_id,
          }
  
  
  class NBCNewsIE(ThePlatformIE):
      _VALID_URL = r'''(?x)https?://(?:www\.)?(?:nbcnews|today|msnbc)\.com/
          (?:video/.+?/(?P<id>\d+)|
          ([^/]+/)*(?:.*-)?(?P<mpx_id>[^/?]+))
          '''
  
      _TESTS = [
          {
              'url': 'http://www.nbcnews.com/video/nbc-news/52753292',
              'md5': '47abaac93c6eaf9ad37ee6c4463a5179',
              'info_dict': {
                  'id': '52753292',
                  'ext': 'flv',
                  'title': 'Crew emerges after four-month Mars food study',
                  'description': 'md5:24e632ffac72b35f8b67a12d1b6ddfc1',
              },
          },
          {
              'url': 'http://www.nbcnews.com/watch/nbcnews-com/how-twitter-reacted-to-the-snowden-interview-269389891880',
              'md5': 'af1adfa51312291a017720403826bb64',
              'info_dict': {
                  'id': 'p_tweet_snow_140529',
                  'ext': 'mp4',
                  'title': 'How Twitter Reacted To The Snowden Interview',
                  'description': 'md5:65a0bd5d76fe114f3c2727aa3a81fe64',
                  'uploader': 'NBCU-NEWS',
                  'timestamp': 1401363060,
                  'upload_date': '20140529',
              },
          },
          {
              'url': 'http://www.nbcnews.com/feature/dateline-full-episodes/full-episode-family-business-n285156',
              'md5': 'fdbf39ab73a72df5896b6234ff98518a',
              'info_dict': {
                  'id': '529953347624',
                  'ext': 'mp4',
                  'title': 'FULL EPISODE: Family Business',
                  'description': 'md5:757988edbaae9d7be1d585eb5d55cc04',
              },
              'skip': 'This page is unavailable.',
          },
          {
              'url': 'http://www.nbcnews.com/nightly-news/video/nightly-news-with-brian-williams-full-broadcast-february-4-394064451844',
              'md5': '73135a2e0ef819107bbb55a5a9b2a802',
              'info_dict': {
                  'id': 'nn_netcast_150204',
                  'ext': 'mp4',
                  'title': 'Nightly News with Brian Williams Full Broadcast (February 4)',
                  'description': 'md5:1c10c1eccbe84a26e5debb4381e2d3c5',
                  'timestamp': 1423104900,
                  'uploader': 'NBCU-NEWS',
                  'upload_date': '20150205',
              },
          },
          {
              'url': 'http://www.nbcnews.com/business/autos/volkswagen-11-million-vehicles-could-have-suspect-software-emissions-scandal-n431456',
              'md5': 'a49e173825e5fcd15c13fc297fced39d',
              'info_dict': {
                  'id': 'x_lon_vwhorn_150922',
                  'ext': 'mp4',
                  'title': 'Volkswagen U.S. Chief:\xa0 We Have Totally Screwed Up',
                  'description': 'md5:c8be487b2d80ff0594c005add88d8351',
                  'upload_date': '20150922',
                  'timestamp': 1442917800,
                  'uploader': 'NBCU-NEWS',
              },
          },
          {
              'url': 'http://www.today.com/video/see-the-aurora-borealis-from-space-in-stunning-new-nasa-video-669831235788',
              'md5': '118d7ca3f0bea6534f119c68ef539f71',
              'info_dict': {
                  'id': 'tdy_al_space_160420',
                  'ext': 'mp4',
                  'title': 'See the aurora borealis from space in stunning new NASA video',
                  'description': 'md5:74752b7358afb99939c5f8bb2d1d04b1',
                  'upload_date': '20160420',
                  'timestamp': 1461152093,
                  'uploader': 'NBCU-NEWS',
              },
          },
          {
              'url': 'http://www.msnbc.com/all-in-with-chris-hayes/watch/the-chaotic-gop-immigration-vote-314487875924',
              'md5': '6d236bf4f3dddc226633ce6e2c3f814d',
              'info_dict': {
                  'id': 'n_hayes_Aimm_140801_272214',
                  'ext': 'mp4',
                  'title': 'The chaotic GOP immigration vote',
                  'description': 'The Republican House votes on a border bill that has no chance of getting through the Senate or signed by the President and is drawing criticism from all sides.',
                  'thumbnail': r're:^https?://.*\.jpg$',
                  'timestamp': 1406937606,
                  'upload_date': '20140802',
                  'uploader': 'NBCU-NEWS',
              },
          },
          {
              'url': 'http://www.nbcnews.com/watch/dateline/full-episode--deadly-betrayal-386250819952',
              'only_matching': True,
          },
          {
              # From http://www.vulture.com/2016/06/letterman-couldnt-care-less-about-late-night.html
              'url': 'http://www.nbcnews.com/widget/video-embed/701714499682',
              'only_matching': True,
          },
      ]
  
      def _real_extract(self, url):
          mobj = re.match(self._VALID_URL, url)
          video_id = mobj.group('id')
          if video_id is not None:
              all_info = self._download_xml('http://www.nbcnews.com/id/%s/displaymode/1219' % video_id, video_id)
              info = all_info.find('video')
  
              return {
                  'id': video_id,
                  'title': info.find('headline').text,
                  'ext': 'flv',
                  'url': find_xpath_attr(info, 'media', 'type', 'flashVideo').text,
                  'description': info.find('caption').text,
                  'thumbnail': find_xpath_attr(info, 'media', 'type', 'thumbnail').text,
              }
          else:
              # "feature" and "nightly-news" pages use theplatform.com
              video_id = mobj.group('mpx_id')
              webpage = self._download_webpage(url, video_id)
  
              filter_param = 'byId'
              bootstrap_json = self._search_regex(
                  [r'(?m)(?:var\s+(?:bootstrapJson|playlistData)|NEWS\.videoObj)\s*=\s*({.+});?\s*$',
                   r'videoObj\s*:\s*({.+})', r'data-video="([^"]+)"',
                   r'jQuery\.extend\(Drupal\.settings\s*,\s*({.+?})\);'],
                  webpage, 'bootstrap json', default=None)
              if bootstrap_json:
                  bootstrap = self._parse_json(
                      bootstrap_json, video_id, transform_source=unescapeHTML)
  
                  info = None
                  if 'results' in bootstrap:
                      info = bootstrap['results'][0]['video']
                  elif 'video' in bootstrap:
                      info = bootstrap['video']
                  elif 'msnbcVideoInfo' in bootstrap:
                      info = bootstrap['msnbcVideoInfo']['meta']
                  elif 'msnbcThePlatform' in bootstrap:
                      info = bootstrap['msnbcThePlatform']['videoPlayer']['video']
                  else:
                      info = bootstrap
  
                  if 'guid' in info:
                      video_id = info['guid']
                      filter_param = 'byGuid'
                  elif 'mpxId' in info:
                      video_id = info['mpxId']
  
              return {
                  '_type': 'url_transparent',
                  'id': video_id,
                  # http://feed.theplatform.com/f/2E2eJC/nbcnews also works
                  'url': update_url_query('http://feed.theplatform.com/f/2E2eJC/nnd_NBCNews', {filter_param: video_id}),
                  'ie_key': 'ThePlatformFeed',
              }
  
  
  class NBCOlympicsIE(InfoExtractor):
      _VALID_URL = r'https?://www\.nbcolympics\.com/video/(?P<id>[a-z-]+)'
  
      _TEST = {
          # Geo-restricted to US
          'url': 'http://www.nbcolympics.com/video/justin-roses-son-leo-was-tears-after-his-dad-won-gold',
          'md5': '54fecf846d05429fbaa18af557ee523a',
          'info_dict': {
              'id': 'WjTBzDXx5AUq',
              'display_id': 'justin-roses-son-leo-was-tears-after-his-dad-won-gold',
              'ext': 'mp4',
              'title': 'Rose\'s son Leo was in tears after his dad won gold',
              'description': 'Olympic gold medalist Justin Rose gets emotional talking to the impact his win in men\'s golf has already had on his children.',
              'timestamp': 1471274964,
              'upload_date': '20160815',
              'uploader': 'NBCU-SPORTS',
          },
      }
  
      def _real_extract(self, url):
          display_id = self._match_id(url)
  
          webpage = self._download_webpage(url, display_id)
  
          drupal_settings = self._parse_json(self._search_regex(
              r'jQuery\.extend\(Drupal\.settings\s*,\s*({.+?})\);',
              webpage, 'drupal settings'), display_id)
  
          iframe_url = drupal_settings['vod']['iframe_url']
          theplatform_url = iframe_url.replace(
              'vplayer.nbcolympics.com', 'player.theplatform.com')
  
          return {
              '_type': 'url_transparent',
              'url': theplatform_url,
              'ie_key': ThePlatformIE.ie_key(),
              'display_id': display_id,
          }
  