Re: multiple componentsSeparatedByString

FROM : Koen van der Drift
DATE : Mon Nov 25 02:37:16 2002

At 6:04 PM -0500 11/24/02, Jonathan Jackel wrote:

>Scanners are a bit weird.  You need to "scanUpTo" to scan past the undesired
>part of the string, and then scan the characters.  I think this will work.
>
>
>  while (! [scanner isAtEnd])
>  {
>      if ([scanner scanUpToCharactersFromSet: stopSet intoString:nil] &&
>            [scanner scanCharactersFromSet:stopSet intoString:&result])
>      {
>          [anArray addObject:result];
>      }
>  }

Thanks Jonathan. Unfortunately, this doesn't work. Starting with the string
"QWERTYASDFGZXCVBNM" I get three single charcters as result: "A" "C" and
"B", instead of "QWERTYA", "SDFGZXC", "VB" and "NM".

>>  stopSet = [NSCharacterSet characterSetWithCharactersInString:@"ABC];
>
>You need a closing quote mark after the string.

Yes, I noticed that after posting, it was a copy-paste error.


I realized later that besides the result strings, I also need the position
of the result string in the original string. I didn't see any methods in
NSScanner that allowed me to get that data, although I might be able to do
it with NSString's rangeOfString or maybe rangeOfCharacterFromSet.
Moreover, in some occasions I need to skip one of the characters in the
stopSet. So I guess scanning the string character by character is the way
to go. Unless I am missing something very essential ;)

Are there any examples/tutorials of NSString parsing available?

thanks,

- Koen.
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