Re: NSDictionary crash
Re: NSDictionary crash
- Subject: Re: NSDictionary crash
- From: Alexander Heinz <email@hidden>
- Date: Sat, 25 Jul 2009 12:28:12 -0700
On Jul 25, 2009, at 11:20 AM, Kyle Sluder wrote:
On Jul 25, 2009, at 11:00 AM, "email@hidden" <email@hidden
> wrote:
I find the third option the most likely: iTunes rewrites the data
file
frequently. Is there a way to lock the file while reading it, or
detect if it is being modified, or suchlike? Thanks.
You aren't guaranteed that the iTunes library file will always be a
plist. The "correct" recommendation, which will also solve your
issue, is to use Apple Events to get the information you need.
In the general case, since you didn't write -[NSDictionary
initWithContentsOfFile:], you can't make it safe. You'll have to
open the file and read it's data yourself, then hand that off to the
NSDictionary initializer (or perhaps NSPropertyListSerialization).
--Kyle Sluder
An alternative would be to copy the file to a temporary location, and
then read from it, as long as you are okay with the version in memory
being slightly out-of-date. However, as Kyle points out, this is not
necessarily a safe way to do things going forward, and Apple Events is
probably what you want.
- Alex Heinz
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