From a8795327cae2bfce299d770039db40a3ac4df2e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sun, 7 Aug 2016 20:45:18 +0700
Subject: [PATCH] [utils] Add support TV Parental Guidelines ratings in
 parse_age_limit

---
 test/test_utils.py  | 15 +++++++++++++++
 youtube_dl/utils.py | 20 ++++++++++++++++++--
 2 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/test/test_utils.py b/test/test_utils.py
index 5a2ae4a1e..724346886 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -42,6 +42,7 @@
     ohdave_rsa_encrypt,
     OnDemandPagedList,
     orderedSet,
+    parse_age_limit,
     parse_duration,
     parse_filesize,
     parse_count,
@@ -432,6 +433,20 @@ def test_url_basename(self):
             url_basename('http://media.w3.org/2010/05/sintel/trailer.mp4'),
             'trailer.mp4')
 
+    def test_parse_age_limit(self):
+        self.assertEqual(parse_age_limit(None), None)
+        self.assertEqual(parse_age_limit(False), None)
+        self.assertEqual(parse_age_limit('invalid'), None)
+        self.assertEqual(parse_age_limit(0), 0)
+        self.assertEqual(parse_age_limit(18), 18)
+        self.assertEqual(parse_age_limit(21), 21)
+        self.assertEqual(parse_age_limit(22), None)
+        self.assertEqual(parse_age_limit('18'), 18)
+        self.assertEqual(parse_age_limit('18+'), 18)
+        self.assertEqual(parse_age_limit('PG-13'), 13)
+        self.assertEqual(parse_age_limit('TV-14'), 14)
+        self.assertEqual(parse_age_limit('TV-MA'), 17)
+
     def test_parse_duration(self):
         self.assertEqual(parse_duration(None), None)
         self.assertEqual(parse_duration(False), None)
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index ddbfcd2f1..c50238ba1 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -1984,11 +1984,27 @@ def encode_compat_str(string, encoding=preferredencoding(), errors='strict'):
 }
 
 
+TV_PARENTAL_GUIDELINES = {
+    'TV-Y': 0,
+    'TV-Y7': 7,
+    'TV-G': 0,
+    'TV-PG': 0,
+    'TV-14': 14,
+    'TV-MA': 17,
+}
+
+
 def parse_age_limit(s):
-    if s is None:
+    if type(s) == int:
+        return s if 0 <= s <= 21 else None
+    if not isinstance(s, compat_basestring):
         return None
     m = re.match(r'^(?P<age>\d{1,2})\+?$', s)
-    return int(m.group('age')) if m else US_RATINGS.get(s)
+    if m:
+        return int(m.group('age'))
+    if s in US_RATINGS:
+        return US_RATINGS[s]
+    return TV_PARENTAL_GUIDELINES.get(s)
 
 
 def strip_jsonp(code):