Unicode in URLs (was "Handling framework exceptions/errors?")
Unicode in URLs (was "Handling framework exceptions/errors?")
- Subject: Unicode in URLs (was "Handling framework exceptions/errors?")
- From: David Troy <email@hidden>
- Date: Sun, 29 Jun 2008 16:10:24 -0400
Jens,
Thanks for the help.
I am being handed a URL as an NSString and am simply forwarding it to
the frameworks for processing.
A example URL which causes a crash is:
http://foo.com/56033713/アイコン用ハング音_normal.jpg
(where foo.com is something else)
I didn't check to see if [NSURL URLWithString:url] is returning nil.
If it is, I should of course be trapping that and not trying to create
a request from it.
I am doing this:
NSMutableURLRequest *theRequest=[NSMutableURLRequest requestWithURL:
[NSURL URLWithString:url]
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:timeout];
I was sort of under the impression that NSURL URLWithString: would
deal with escaping/translating the Kanji characters, but I could see
how it might not.
Is there some method I can use to break the Kanji back out into
escaped characters before passing it to NSURL URLWithString: ?
Thanks!
Dave
On Jun 29, 2008, at 4:00 PM, Jens Alfke wrote:
On 29 Jun '08, at 9:56 AM, David Troy wrote:
I have a situation where I am loading arbitray data from network-
supplied URLs. Sometimes the URLs contain Kanji unicode
characters. When they do, my HTTP loading mechanism (which is
built around NSURL* frameworks) dies with an exception deep inside
of CFURLGetString.
That indicates either a bug in the frameworks, or that you're
passing in illegal values.
Also, what do you mean by a URL containing Kanji characters? URLs
can only contain ASCII; anything else should be escaped using "%".
If you try to construct an NSURL from an invalid string, you'll get
nil, and passing that nil URL into other framework calls could
definitely cause exceptions/crashes.
Pasting in the backtrace from a crash log would be useful for
diagnosing this.
—Jens
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