--- /dev/null
+import json
+import os
+import re
+import xml.etree.ElementTree
+
+from .common import InfoExtractor
+from ..utils import (
+ ExtractorError,
+ formatSeconds,
+)
+
+
+class JustinTVIE(InfoExtractor):
+ """Information extractor for justin.tv and twitch.tv"""
+ # TODO: One broadcast may be split into multiple videos. The key
+ # 'broadcast_id' is the same for all parts, and 'broadcast_part'
+ # starts at 1 and increases. Can we treat all parts as one video?
+
+ _VALID_URL = r"""(?x)^(?:http://)?(?:www\.)?(?:twitch|justin)\.tv/
+ (?:
+ (?P<channelid>[^/]+)|
+ (?:(?:[^/]+)/b/(?P<videoid>[^/]+))|
+ (?:(?:[^/]+)/c/(?P<chapterid>[^/]+))
+ )
+ /?(?:\#.*)?$
+ """
+ _JUSTIN_PAGE_LIMIT = 100
+ IE_NAME = u'justin.tv'
+
+ def report_download_page(self, channel, offset):
+ """Report attempt to download a single page of videos."""
+ self.to_screen(u'%s: Downloading video information from %d to %d' %
+ (channel, offset, offset + self._JUSTIN_PAGE_LIMIT))
+
+ # Return count of items, list of *valid* items
+ def _parse_page(self, url, video_id):
+ webpage = self._download_webpage(url, video_id,
+ u'Downloading video info JSON',
+ u'unable to download video info JSON')
+
+ response = json.loads(webpage)
+ if type(response) != list:
+ error_text = response.get('error', 'unknown error')
+ raise ExtractorError(u'Justin.tv API: %s' % error_text)
+ info = []
+ for clip in response:
+ video_url = clip['video_file_url']
+ if video_url:
+ video_extension = os.path.splitext(video_url)[1][1:]
+ video_date = re.sub('-', '', clip['start_time'][:10])
+ video_uploader_id = clip.get('user_id', clip.get('channel_id'))
+ video_id = clip['id']
+ video_title = clip.get('title', video_id)
+ info.append({
+ 'id': video_id,
+ 'url': video_url,
+ 'title': video_title,
+ 'uploader': clip.get('channel_name', video_uploader_id),
+ 'uploader_id': video_uploader_id,
+ 'upload_date': video_date,
+ 'ext': video_extension,
+ })
+ return (len(response), info)
+
+ def _real_extract(self, url):
+ mobj = re.match(self._VALID_URL, url)
+ if mobj is None:
+ raise ExtractorError(u'invalid URL: %s' % url)
+
+ api_base = 'http://api.justin.tv'
+ paged = False
+ if mobj.group('channelid'):
+ paged = True
+ video_id = mobj.group('channelid')
+ api = api_base + '/channel/archives/%s.json' % video_id
+ elif mobj.group('chapterid'):
+ chapter_id = mobj.group('chapterid')
+
+ webpage = self._download_webpage(url, chapter_id)
+ m = re.search(r'PP\.archive_id = "([0-9]+)";', webpage)
+ if not m:
+ raise ExtractorError(u'Cannot find archive of a chapter')
+ archive_id = m.group(1)
+
+ api = api_base + '/broadcast/by_chapter/%s.xml' % chapter_id
+ chapter_info_xml = self._download_webpage(api, chapter_id,
+ note=u'Downloading chapter information',
+ errnote=u'Chapter information download failed')
+ doc = xml.etree.ElementTree.fromstring(chapter_info_xml)
+ for a in doc.findall('.//archive'):
+ if archive_id == a.find('./id').text:
+ break
+ else:
+ raise ExtractorError(u'Could not find chapter in chapter information')
+
+ video_url = a.find('./video_file_url').text
+ video_ext = video_url.rpartition('.')[2] or u'flv'
+
+ chapter_api_url = u'https://api.twitch.tv/kraken/videos/c' + chapter_id
+ chapter_info_json = self._download_webpage(chapter_api_url, u'c' + chapter_id,
+ note='Downloading chapter metadata',
+ errnote='Download of chapter metadata failed')
+ chapter_info = json.loads(chapter_info_json)
+
+ bracket_start = int(doc.find('.//bracket_start').text)
+ bracket_end = int(doc.find('.//bracket_end').text)
+
+ # TODO determine start (and probably fix up file)
+ # youtube-dl -v http://www.twitch.tv/firmbelief/c/1757457
+ #video_url += u'?start=' + TODO:start_timestamp
+ # bracket_start is 13290, but we want 51670615
+ self._downloader.report_warning(u'Chapter detected, but we can just download the whole file. '
+ u'Chapter starts at %s and ends at %s' % (formatSeconds(bracket_start), formatSeconds(bracket_end)))
+
+ info = {
+ 'id': u'c' + chapter_id,
+ 'url': video_url,
+ 'ext': video_ext,
+ 'title': chapter_info['title'],
+ 'thumbnail': chapter_info['preview'],
+ 'description': chapter_info['description'],
+ 'uploader': chapter_info['channel']['display_name'],
+ 'uploader_id': chapter_info['channel']['name'],
+ }
+ return [info]
+ else:
+ video_id = mobj.group('videoid')
+ api = api_base + '/broadcast/by_archive/%s.json' % video_id
+
+ self.report_extraction(video_id)
+
+ info = []
+ offset = 0
+ limit = self._JUSTIN_PAGE_LIMIT
+ while True:
+ if paged:
+ self.report_download_page(video_id, offset)
+ page_url = api + ('?offset=%d&limit=%d' % (offset, limit))
+ page_count, page_info = self._parse_page(page_url, video_id)
+ info.extend(page_info)
+ if not paged or page_count != limit:
+ break
+ offset += limit
+ return info
projects / youtube-dl / blobdiff