Re: how to stop NSString/NSData from interpreting backslash

• Subject: Re: how to stop NSString/NSData from interpreting backslash
• From: Joseph Jones <email@hidden>
• Date: Tue, 30 Sep 2003 21:56:34 -0700

Hi all-

I'm hoping someone can help me with the following code:

int x;
NSString* src = [NSString stringWithFormat:@"abc\n\ndef"];
for (x = 0; x < 10; x++)
{
printf("%i %c\n", x, [src characterAtIndex:x]);
}


What I had hoped to be printed was:

1 a
2 b
3 \
4 n
5 \
6 n
7 d
8 e
9 f

what was actually printed was:

0 a
1 b
2 c
3

4

5 d
6 e
7 f
*** Uncaught exception

I know, just escape the backslash with a \\.

Problem is, I am reading a source file and doing some analysis, and the
source file has lots of backslashes. I don't want those interpreted as
escape chars, I want to literally see the \ chr(92) and then read the
next char. I thought maybe NSString was "helping me out", so I read in
the file as NSData...

NSData* source = [NSData dataWithContentsOfFile:filename];
char* p = (char*)[source bytes];

but p+x still evaluates the \ followed by an n as a carriage return
rather than two bytes of data, chr(92) followed by chr(110).

anyone have any ideas how to get around this?

Thanks, Ted
ted at elowery dot net
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