If you have a string which may or may not be a URL and you want to get a
nsIURI for it, do not do this:
// BAD!
nsCOMPtr<nsIURL> uri;
nsComponentManager::CreateInstance("@mozilla.org/network/standard-url;1",
nsnull,
NS_GET_IID(nsIURL),
getter_AddRefs(uri));
uri->SetSpec(url);
//
This above code bypass necko's pluggable protocol architecture
completely. Furthermore, if you have a bad URL, not all of the getter
attribute will be set properly.
The proper thing to do is to call NS_NewURI:
http://lxr.mozilla.org/seamonkey/source/netwerk/base/public/nsNetUtil.h#66
This is in regards to bug
http://bugzilla.mozilla.org/show_bug.cgi?id=73845
The bug has a listing of call sites that I know about and will change
(if I can). If you are doing anything special, please contact me.
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