Is a formatter (subclass of NSFormatter) which removes the newlines encountered in input. This can be used to avoid newlines characters to get in NSTextFields, for example by copy&pasting.

BSSingleLineFormatter source preview

#import "BSSingleLineFormatter.h"
#import "NSCharacterSet+BSNewLineCharacterSet.h"


@implementation BSSingleLineFormatter

- (NSString *)stringForObjectValue:(id)anObject
{
  NSString *returnString = @"";
  NSString *tmpString = nil;
  
  NSScanner *scanner = [NSScanner scannerWithString:anObject];
  while([scanner scanUpToCharactersFromSet:[NSCharacterSet newlineCharacterSet] intoString:&tmpString])
    returnString = [returnString stringByAppendingString:tmpString];

  return returnString;
}

- (BOOL)getObjectValue:(id *)anObject forString:(NSString *)string errorDescription:(NSString **)error
{
  NSScanner *scanner = [NSScanner scannerWithString:string];
  NSString *tmpString = nil;
  *anObject = @"";
  while([scanner scanUpToCharactersFromSet:[NSCharacterSet newlineCharacterSet] intoString:&tmpString])
    *anObject = [*anObject stringByAppendingString:tmpString];
  return YES;
}

- (BOOL)isPartialStringValid:(NSString *)partialString newEditingString:(NSString **)newString errorDescription:(NSString **)error
{
  if([partialString rangeOfCharacterFromSet:[NSCharacterSet newlineCharacterSet]].location == NSNotFound)
    return YES;
  
  NSScanner *scanner = [NSScanner scannerWithString:partialString];
  NSString *tmpString = nil;
  *newString = @"";
    
  while([scanner scanUpToCharactersFromSet:[NSCharacterSet newlineCharacterSet] intoString:&tmpString])
    *newString = [*newString stringByAppendingString:tmpString];
  
  return NO;
}
@end

BSSingleLineFormatter header preview

#import <Cocoa/Cocoa.h>


@interface BSSingleLineFormatter : NSFormatter 
{

}

@end

Dependencies:

• NSCharacterSet (BSNewLineCharacterSet)

Download Dependencies

Compatible with:

• Mac OS X 10.0
• Mac OS X 10.1
• Mac OS X 10.2
• Mac OS X 10.3
• Mac OS X 10.4 PPC
• Mac OS X 10.4 Intel
• Mac OS X 10.5 PPC
• Mac OS X 10.5 Intel

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