NSString category for string splitting with a limit.

NSString+ComponentsLimit.h

//
//  NSString+ComponentsLimit.h
//
//  Created by Shilo White on 8/31/13.
//  Copyright (c) 2013 Shilocity Productions. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSString (ComponentsLimit)

- (NSArray *)componentsSeparatedByString:(NSString *)separator limit:(NSUInteger)limit;

@end

NSString+ComponentsLimit.m

//
//  NSString+ComponentsLimit.m
//
//  Created by Shilo White on 8/31/13.
//  Copyright (c) 2013 Shilocity Productions. All rights reserved.
//

#import "NSString+ComponentsLimit.h"

@implementation NSString (ComponentsLimit)

- (NSArray *)componentsSeparatedByString:(NSString *)separator limit:(NSUInteger)limit
{
    if (limit == 0)
  	return [self componentsSeparatedByString:separator];
    
	NSArray *allComponents = [self componentsSeparatedByString:separator];
	NSMutableArray *components = [NSMutableArray arrayWithCapacity:MIN(limit, allComponents.count)];
    
	int i = 0;
	for (NSString *component in allComponents)
    {
		if (i >= limit)
        {
			[components addObject:[[allComponents subarrayWithRange:NSMakeRange(i, allComponents.count-1)] componentsJoinedByString:separator]];
			break;
		}
		[components addObject:component];
		i++;
	}
    
	return components;
}
@end

This doesn't work at all and crashes because:

• it's not allComponents.count-1 but allComponents.count-i
• it's not i >= limit but limit - 1

Implementation that works:

if (limit == 0)
    return [self componentsSeparatedByString:separator];

NSArray *allComponents = [self componentsSeparatedByString:separator];
if (allComponents.count <= limit) return allComponents;

NSMutableArray *components = [NSMutableArray arrayWithCapacity:MIN(limit, allComponents.count)];

int i = 0;
for (NSString *component in allComponents) {
    if (i == (limit - 1)) {
        [components addObject:
                [[allComponents subarrayWithRange:NSMakeRange(i, allComponents.count - i)]
                        componentsJoinedByString:separator]];
        break;
    }
    [components addObject:component];
    i++;
}

return components;

Thank you! Unfortunately this code is very old and I no longer use Objective-C as well as have no time. So I can not validate any of it. I will take your word for it, thank you for the effort and contribution!