validate url

gistfile1.txt

#import <Foundation/Foundation.h>

@interface NSString (CFXValidateURL)

- (BOOL)cfx_validateUrl;

- (BOOL)cfx_validateUrl_RegEx;

@end




#import "NSString+CFXValidateURL.h"

@implementation NSString (CFXValidateURL)

- (BOOL)cfx_validateUrl {
    NSUInteger length = [self length];
    if (length) {
        NSError *error = nil;
        NSDataDetector *dataDetector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypeLink error:&error];
        if (dataDetector && !error) {
            NSRange range = NSMakeRange(0, length);
            NSRange notFoundRange = (NSRange){NSNotFound, 0};
            NSRange linkRange = [dataDetector rangeOfFirstMatchInString:self options:0 range:range];
            if (!NSEqualRanges(notFoundRange, linkRange) && NSEqualRanges(range, linkRange)) {
                return YES;
            }
        }
    }
    return NO;
}

- (BOOL)cfx_validateUrl_RegEx {
    NSPredicate *websitePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",
                                     @"^(((((h|H)(t|T){2}(p|P)s?)|((f|F)(t|T)(p|P)))://(w{3}.)?)|(w{3}.))[A-Za-z0-9]+(.[A-Za-z0-9-:;\?#_]+)+"];
    if ([websitePredicate evaluateWithObject:self]){
        return YES;
    }
    return NO;
}

@end