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[utils] Introduce url_or_none

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Sergey M․ 2018-07-21 18:01:06 +07:00
parent b96b4be461
commit af03000ad5
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11
test/test_utils.py
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@ -78,6 +78,7 @@ from youtube_dl.utils import (
uppercase_escape,
lowercase_escape,
url_basename,
url_or_none,
base_url,
urljoin,
urlencode_postdata,
@ -507,6 +508,16 @@ class TestUtil(unittest.TestCase):
self.assertEqual(urljoin('http://foo.de/', ['foobar']), None)
self.assertEqual(urljoin('http://foo.de/a/b/c.txt', '.././../d.txt'), 'http://foo.de/d.txt')
def test_url_or_none(self):
self.assertEqual(url_or_none(None), None)
self.assertEqual(url_or_none(''), None)
self.assertEqual(url_or_none('foo'), None)
self.assertEqual(url_or_none('http://foo.de'), 'http://foo.de')
self.assertEqual(url_or_none('https://foo.de'), 'https://foo.de')
self.assertEqual(url_or_none('http$://foo.de'), None)
self.assertEqual(url_or_none('http://foo.de'), 'http://foo.de')
self.assertEqual(url_or_none('//foo.de'), '//foo.de')
def test_parse_age_limit(self):
self.assertEqual(parse_age_limit(None), None)
self.assertEqual(parse_age_limit(False), None)

7
youtube_dl/utils.py
View file

@ -1866,6 +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