Re: multiple componentsSeparatedByString

FROM : Jonathan Jackel
DATE : Mon Nov 25 00:04:43 2002

> I am trying this now, but run in some problems. Here's a snippet:


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];
      }
  }

Also, your e-mail has this code:

>  stopSet = [NSCharacterSet characterSetWithCharactersInString:@"ABC];

You need a closing quote mark after the string.

> I found another solution. Instead of using an NSScanner, I just extract
> each character from the string and test it against the NSCharacterSet:

That method works for this particular test, but your original question dealt
with interpreting a file with several different field separators at once.
Scanners, notwithstanding their weirdness, are tailor-made for this.  With
your "string" method you'll need to have a way to track the range of the
actual data, rather than the field separators.  It's very doable, of course,
but I think a scanner would be a lot better.

Jonathan
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