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Re: NSUnarchiver unarchiveObjectWithData problem
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Re: NSUnarchiver unarchiveObjectWithData problem


  • Subject: Re: NSUnarchiver unarchiveObjectWithData problem
  • From: Gus Mueller <email@hidden>
  • Date: Mon, 16 Jun 2003 20:14:37 -0700

I'm still trying to figure out this problem I'm having with
NSUnarchiver- I've simplified the code quite a bit to what you see
below. All I'm doing is loading in a RTF with the Zapfino font + funky
letter A, archive it, and unarchive it. Then bang! I get the
exception. Seems kind of strange to me.

Just a fair warning first- the code below loads a RTF over the network (
http://gusmueller.com/zap.rtf ), in case anybody wants to try it over a
modem.

I compile it like so:
cc -framework Cocoa nph.m

run it as such:
./a.out

and it produces the output:

2003-06-16 22:04:46.392 a.out[1328] s: this char right here will barf:
\\ufffd
2003-06-16 22:04:46.395 a.out[1328] *** Uncaught exception:
<NSInvalidArgumentException> *** -[NSPlaceholderDictionary
initWithObjects:forKeys:count:]: attempt to insert nil value
Trace/BPT trap

thanks in advance for any help or advice,

-gus



#import <Cocoa/Cocoa.h>

int main (int argc, const char * argv[]) {

NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

NSString *ss = [NSString stringWithContentsOfURL:[NSURL
URLWithString:@"http://gusmueller.com/zap.rtf";]];

NSMutableAttributedString *s = [[NSMutableAttributedString alloc]
initWithRTF:[ss
dataUsingEncoding:NSUTF8StringEncoding]
documentAttributes:NULL];

// it's a good string at this point:
NSLog(@"s: %@", [s string]);

// archive it.
NSData *data = [NSArchiver archivedDataWithRootObject:s];

// Then try and unarchive it, but this throws the exception-
s = [NSUnarchiver unarchiveObjectWithData:data];

// we never get to see what it is...
// *** -[NSPlaceholderDictionary initWithObjects:forKeys:count:]:
attempt to insert nil value
NSLog(@"%@", [s string]);

[pool release];

return 0;
}
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References: 
 >NSUnarchiver unarchiveObjectWithData problem (From: Gus Mueller <email@hidden>)

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