NSString ASCII filter

• James Hober NSString ASCII filter Feb 12 2008, 20:58
  What is the simplest, reasonably efficient way to determine if an
  NSString contains a non-ASCII character?
  
  What I came up with was:
  
      NSCharacterSet *nonASCII = [[NSCharacterSet
  characterSetWithRange:NSMakeRange(0, 128)] invertedSet];
      NSRange nonASCIIRange = [testString
  rangeOfCharacterFromSet:nonASCII];
      if (nonASCIIRange.location != NSNotFound)
      {
          NSLog(@"got a non-ASCII character");
      }
  
  Thanks,
  James
• Aki Inoue Re: NSString ASCII filter Feb 12 2008, 21:01
  This should be reasonably efficient.
  
  Aki
  
  On 2008/02/12, at 11:58, James Hober wrote:
  
  

  > What is the simplest, reasonably efficient way to determine if an
  > NSString contains a non-ASCII character?
  >
  > What I came up with was:
  >
  > NSCharacterSet *nonASCII = [[NSCharacterSet
  > characterSetWithRange:NSMakeRange(0, 128)] invertedSet];
  > NSRange nonASCIIRange = [testString
  > rangeOfCharacterFromSet:nonASCII];
  > if (nonASCIIRange.location != NSNotFound)
  > {
  > NSLog(@"got a non-ASCII character");
  > }
  >
  > Thanks,
  > James
  
• Sean McBride Re: NSString ASCII filter Feb 12 2008, 21:04
  On 2/12/08 11:58 AM, James Hober said:
  
  

  > What is the simplest, reasonably efficient way to determine if an
  > NSString contains a non-ASCII character
  

  
  How about:
  
  BOOL foo = [string canBeConvertedToEncoding:
    NSASCIIStringEncoding];
  
  --
  ____________________________________________________________
  Sean McBride, B. Eng                <sean...>
  Rogue Research                        www.rogue-research.com
  Mac Software Developer              Montréal, Québec, Canada
• James Hober Re: NSString ASCII filter Feb 12 2008, 22:29
  On Feb 12, 2008, at 12:04 PM, Sean McBride wrote:
  
  

  > On 2/12/08 11:58 AM, James Hober said:
  >
  >
  >> What is the simplest, reasonably efficient way to determine if an
  >> NSString contains a non-ASCII character
  >>
  >
  > How about:
  >
  > BOOL foo = [string canBeConvertedToEncoding:
  > NSASCIIStringEncoding];
  >
  

  
  Yes!  A one liner for simple task.  Thanks!
  
  James