X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=youtube_dl%2Futils.py;h=b84436ed64cc264659dd0a70811e2812612709cc;hb=af03000ad5a445f03fbacb63ce626f8dcfe785c7;hp=d61af88378727f6e2df201f129e05554da52d3ae;hpb=b836118724122a639a1cb78d55d91724bf1e7251;p=youtube-dl

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index d61af8837..b84436ed6 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -184,6 +184,7 @@ DATE_FORMATS_MONTH_FIRST.extend([
 ])
 
 PACKED_CODES_RE = r"}\('(.+)',(\d+),(\d+),'([^']+)'\.split\('\|'\)"
+JSON_LD_RE = r'(?is)<script[^>]+type=(["\'])application/ld\+json\1[^>]*>(?P<json_ld>.+?)</script>'
 
 
 def preferredencoding():
@@ -1228,7 +1229,7 @@ def unified_timestamp(date_str, day_first=True):
 
 
 def determine_ext(url, default_ext='unknown_video'):
-    if url is None:
+    if url is None or '.' not in url:
         return default_ext
     guess = url.partition('?')[0].rpartition('.')[2]
     if re.match(r'^[A-Za-z0-9]+$', guess):
@@ -1865,6 +1866,13 @@ def strip_or_none(v):
     return None if v is None else v.strip()
 
 
+def url_or_none(url):
+    if not url or not isinstance(url, compat_str):
+        return None
+    url = url.strip()
+    return url if re.match(r'^(?:[a-zA-Z][\da-zA-Z.+-]*:)?//', url) else None
+
+
 def parse_duration(s):
     if not isinstance(s, compat_basestring):
         return None
@@ -2253,12 +2261,12 @@ US_RATINGS = {
 
 
 TV_PARENTAL_GUIDELINES = {
-    'Y': 0,
-    'Y7': 7,
-    'G': 0,
-    'PG': 0,
-    '14': 14,
-    'MA': 17,
+    'TV-Y': 0,
+    'TV-Y7': 7,
+    'TV-G': 0,
+    'TV-PG': 0,
+    'TV-14': 14,
+    'TV-MA': 17,
 }
 
 
@@ -2272,16 +2280,16 @@ def parse_age_limit(s):
         return int(m.group('age'))
     if s in US_RATINGS:
         return US_RATINGS[s]
-    m = re.match(r'^TV[_-]?(%s)$' % '|'.join(TV_PARENTAL_GUIDELINES.keys()), s)
+    m = re.match(r'^TV[_-]?(%s)$' % '|'.join(k[3:] for k in TV_PARENTAL_GUIDELINES), s)
     if m:
-        return TV_PARENTAL_GUIDELINES[m.group(1)]
+        return TV_PARENTAL_GUIDELINES['TV-' + m.group(1)]
     return None
 
 
 def strip_jsonp(code):
     return re.sub(
         r'''(?sx)^
-            (?:window\.)?(?P<func_name>[a-zA-Z0-9_.$]+)
+            (?:window\.)?(?P<func_name>[a-zA-Z0-9_.$]*)
             (?:\s*&&\s*(?P=func_name))?
             \s*\(\s*(?P<callback_data>.*)\);?
             \s*?(?://[^\n]*)*$''',
@@ -2667,6 +2675,7 @@ def dfxp2srt(dfxp_data):
     ]
 
     _x = functools.partial(xpath_with_ns, ns_map={
+        'xml': 'http://www.w3.org/XML/1998/namespace',
         'ttml': 'http://www.w3.org/ns/ttml',
         'tts': 'http://www.w3.org/ns/ttml#styling',
     })
@@ -2758,7 +2767,9 @@ def dfxp2srt(dfxp_data):
     repeat = False
     while True:
         for style in dfxp.findall(_x('.//ttml:style')):
-            style_id = style.get('id')
+            style_id = style.get('id') or style.get(_x('xml:id'))
+            if not style_id:
+                continue
             parent_style_id = style.get('style')
             if parent_style_id:
                 if parent_style_id not in styles: