Re: NSFileManager contentsEqualAtPath

FROM : Michele Balistreri
DATE : Mon Aug 14 23:57:26 2006

It might have something to do with caching i think. Now that's just a 
guess, i don't know how exactly the AFP (i suppose you use AFP) 
server/client are implemented but it may cache some data not get the 
updates immediately. Try for example stopping/restarting file 
sharing. Again, i'm not sure this is the answer, but you should take 
a look at that.

Il giorno 14/ago/06, alle ore 22:57, Gerriet M. Denkmann ha scritto:

> Computer A has mounted via Finder some home directory of computer B.
>
> A program does on A:
>
> NSFileManager *fileManager = [ NSFileManager defaultManager ] ;
> NSString *localPath = @"/Users/userid/Desktop/Test1/a"; <-- on 
> computer A
> NSString *distantPath = @"/Volumes/userid/Desktop/Test1/b"; <-- on 
> computer B
> BOOL ok = [ fileManager copyPath: localPath  toPath: distantPath 
> handler: nil ];
> // ok
>
> Then the user deletes the last line (2 bytes + \n) of file b on 
> computer B .
>
> Now the program does on A:
> BOOL same = [ fileManager contentsEqualAtPath: distantPath andPath: 
> localPath ];
> // same <-- strange
>
> but the other way round:
> BOOL sam2 = [ fileManager contentsEqualAtPath: localPath andPath: 
> distantPath ];
> // not same <-- strange
>
> the user does on computer A:
> ls -l /Users/userid/Desktop/Test1/a --> 53 bytes
> ls -l /Volumes/userid/Desktop/Test1/b --> 53 bytes <-- strange
>
> the user does on computer B:
> ls -l /Users/userid/Desktop/Test1/b --> 50 bytes
>
> the user opens distantPath  on computer A in a hex editor and sees 
> 50 bytes as expected, followed by 3 zero bytes.
>
> What is my program doing wrong that it gets such strange and 
> unexpected results?
> (both computers 10.4.7 ppc)
>
> Gerriet.
>
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