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-rw-r--r--youtube_dl/utils.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index b8700efcb..b84436ed6 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -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