[appletrailers] Rework extraction (fixes #1387)

The exraction was broken:
* The includes page contains img elements that need to be fixed.
* Use the 'itunes.inc' page, it contains a json dictionary for each trailer with information.
* Get the formats from 'includes/settings{trailer_name}.json'
* Use urljoin to allow urls with a fragment identifier to work

Removed the thumbnail urls from the tests, they are different now.

youtube_dl/extractor/appletrailers.py

@@ -1,8 +1,10 @@
 import re
 import xml.etree.ElementTree
+import json
 
 from .common import InfoExtractor
 from ..utils import (
+    compat_urlparse,
     determine_ext,
 )
 
@@ -14,10 +16,9 @@ class AppleTrailersIE(InfoExtractor):
         u"playlist": [
             {
                 u"file": u"manofsteel-trailer4.mov",
-                u"md5": u"11874af099d480cc09e103b189805d5f",
+                u"md5": u"d97a8e575432dbcb81b7c3acb741f8a8",
                 u"info_dict": {
                     u"duration": 111,
-                    u"thumbnail": u"http://trailers.apple.com/trailers/wb/manofsteel/images/thumbnail_11624.jpg",
                     u"title": u"Trailer 4",
                     u"upload_date": u"20130523",
                     u"uploader_id": u"wb",
@@ -25,10 +26,9 @@ class AppleTrailersIE(InfoExtractor):
             },
             {
                 u"file": u"manofsteel-trailer3.mov",
-                u"md5": u"07a0a262aae5afe68120eed61137ab34",
+                u"md5": u"b8017b7131b721fb4e8d6f49e1df908c",
                 u"info_dict": {
                     u"duration": 182,
-                    u"thumbnail": u"http://trailers.apple.com/trailers/wb/manofsteel/images/thumbnail_10793.jpg",
                     u"title": u"Trailer 3",
                     u"upload_date": u"20130417",
                     u"uploader_id": u"wb",
@@ -36,10 +36,9 @@ class AppleTrailersIE(InfoExtractor):
             },
             {
                 u"file": u"manofsteel-trailer.mov",
-                u"md5": u"e401fde0813008e3307e54b6f384cff1",
+                u"md5": u"d0f1e1150989b9924679b441f3404d48",
                 u"info_dict": {
                     u"duration": 148,
-                    u"thumbnail": u"http://trailers.apple.com/trailers/wb/manofsteel/images/thumbnail_8703.jpg",
                     u"title": u"Trailer",
                     u"upload_date": u"20121212",
                     u"uploader_id": u"wb",
@@ -47,10 +46,9 @@ class AppleTrailersIE(InfoExtractor):
             },
             {
                 u"file": u"manofsteel-teaser.mov",
-                u"md5": u"76b392f2ae9e7c98b22913c10a639c97",
+                u"md5": u"5fe08795b943eb2e757fa95cb6def1cb",
                 u"info_dict": {
                     u"duration": 93,
-                    u"thumbnail": u"http://trailers.apple.com/trailers/wb/manofsteel/images/thumbnail_6899.jpg",
                     u"title": u"Teaser",
                     u"upload_date": u"20120721",
                     u"uploader_id": u"wb",
@@ -59,87 +57,61 @@ class AppleTrailersIE(InfoExtractor):
         ]
     }
 
+    _JSON_RE = r'iTunes.playURL\((.*?)\);'
+
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
         movie = mobj.group('movie')
         uploader_id = mobj.group('company')
 
-        playlist_url = url.partition(u'?')[0] + u'/includes/playlists/web.inc'
+        playlist_url = compat_urlparse.urljoin(url, u'includes/playlists/itunes.inc')
         playlist_snippet = self._download_webpage(playlist_url, movie)
-        playlist_cleaned = re.sub(r'(?s)<script>.*?</script>', u'', playlist_snippet)
+        playlist_cleaned = re.sub(r'(?s)<script[^<]*?>.*?</script>', u'', playlist_snippet)
+        playlist_cleaned = re.sub(r'<img ([^<]*?)>', r'<img \1/>', playlist_cleaned)
+        # The ' in the onClick attributes are not escaped, it couldn't be parsed
+        # with xml.etree.ElementTree.fromstring
+        # like: http://trailers.apple.com/trailers/wb/gravity/
+        def _clean_json(m):
+            return u'iTunes.playURL(%s);' % m.group(1).replace('\'', '&#39;')
+        playlist_cleaned = re.sub(self._JSON_RE, _clean_json, playlist_cleaned)
         playlist_html = u'<html>' + playlist_cleaned + u'</html>'
 
-        size_cache = {}
-
         doc = xml.etree.ElementTree.fromstring(playlist_html)
         playlist = []
         for li in doc.findall('./div/ul/li'):
-            title = li.find('.//h3').text
+            on_click = li.find('.//a').attrib['onClick']
+            trailer_info_json = self._search_regex(self._JSON_RE,
+                on_click, u'trailer info')
+            trailer_info = json.loads(trailer_info_json)
+            title = trailer_info['title']
             video_id = movie + '-' + re.sub(r'[^a-zA-Z0-9]', '', title).lower()
             thumbnail = li.find('.//img').attrib['src']
+            upload_date = trailer_info['posted'].replace('-', '')
 
-            date_el = li.find('.//p')
-            upload_date = None
-            m = re.search(r':\s?(?P<month>[0-9]{2})/(?P<day>[0-9]{2})/(?P<year>[0-9]{2})', date_el.text)
-            if m:
-                upload_date = u'20' + m.group('year') + m.group('month') + m.group('day')
-            runtime_el = date_el.find('./br')
-            m = re.search(r':\s?(?P<minutes>[0-9]+):(?P<seconds>[0-9]{1,2})', runtime_el.tail)
+            runtime = trailer_info['runtime']
+            m = re.search(r'(?P<minutes>[0-9]+):(?P<seconds>[0-9]{1,2})', runtime)
             duration = None
             if m:
                 duration = 60 * int(m.group('minutes')) + int(m.group('seconds'))
 
-            formats = []
-            for formats_el in li.findall('.//a'):
-                if formats_el.attrib['class'] != 'OverlayPanel':
-                    continue
-                target = formats_el.attrib['target']
-
-                format_code = formats_el.text
-                if 'Automatic' in format_code:
-                    continue
+            first_url = trailer_info['url']
+            trailer_id = first_url.split('/')[-1].rpartition('_')[0]
+            settings_json_url = compat_urlparse.urljoin(url, 'includes/settings/%s.json' % trailer_id)
+            settings_json = self._download_webpage(settings_json_url, trailer_id, u'Downloading settings json')
+            settings = json.loads(settings_json)
 
-                size_q = formats_el.attrib['href']
-                size_id = size_q.rpartition('#videos-')[2]
-                if size_id not in size_cache:
-                    size_url = url + size_q
-                    sizepage_html = self._download_webpage(
-                        size_url, movie,
-                        note=u'Downloading size info %s' % size_id,
-                        errnote=u'Error while downloading size info %s' % size_id,
-                    )
-                    _doc = xml.etree.ElementTree.fromstring(sizepage_html)
-                    size_cache[size_id] = _doc
-
-                sizepage_doc = size_cache[size_id]
-                links = sizepage_doc.findall('.//{http://www.w3.org/1999/xhtml}ul/{http://www.w3.org/1999/xhtml}li/{http://www.w3.org/1999/xhtml}a')
-                for vid_a in links:
-                    href = vid_a.get('href')
-                    if not href.endswith(target):
-                        continue
-                    detail_q = href.partition('#')[0]
-                    detail_url = url + '/' + detail_q
-
-                    m = re.match(r'includes/(?P<detail_id>[^/]+)/', detail_q)
-                    detail_id = m.group('detail_id')
-
-                    detail_html = self._download_webpage(
-                        detail_url, movie,
-                        note=u'Downloading detail %s %s' % (detail_id, size_id),
-                        errnote=u'Error while downloading detail %s %s' % (detail_id, size_id)
-                    )
-                    detail_doc = xml.etree.ElementTree.fromstring(detail_html)
-                    movie_link_el = detail_doc.find('.//{http://www.w3.org/1999/xhtml}a')
-                    assert movie_link_el.get('class') == 'movieLink'
-                    movie_link = movie_link_el.get('href').partition('?')[0].replace('_', '_h')
-                    ext = determine_ext(movie_link)
-                    assert ext == 'mov'
-
-                    formats.append({
-                        'format': format_code,
-                        'ext': ext,
-                        'url': movie_link,
-                    })
+            formats = []
+            for format in settings['metadata']['sizes']:
+                # The src is a file pointing to the real video file
+                format_url = re.sub(r'_(\d*p.mov)', r'_h\1', format['src'])
+                formats.append({
+                    'url': format_url,
+                    'ext': determine_ext(format_url),
+                    'format': format['type'],
+                    'width': format['width'],
+                    'height': int(format['height']),
+                })
+            formats = sorted(formats, key=lambda f: (f['height'], f['width']))
 
             info = {
                 '_type': 'video',