NSString+Utils Category - MD5String - isValidEmailAddress - googleAddressSearchFormat - phoneAppFriendlyNumber - safariFriendlyURL

gistfile1.m

//
//  NSString+Utils.m
//  Invenias
//
//  Created by Martin McBrearty on 15/01/2013.
//  Copyright (c) 2013 Myello Digital Ltd. All rights reserved.
//

#import "NSString+Utils.h"

@implementation NSString (Utils)

- (NSString*) MD5String
{
    const char *cStr = [self UTF8String];
    unsigned char digest[16];
    CC_MD5( cStr, strlen(cStr), digest ); // This is the md5 call
    
    NSMutableString *output = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH * 2];
    
    for(int i = 0; i < CC_MD5_DIGEST_LENGTH; i++)
        [output appendFormat:@"%02x", digest[i]];
    
    return  output;
}

- (BOOL)isValidEmailAddress
{
    NSError *error = NULL;
    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"\\b[A-Z0-9._%-]+@[A-Z0-9.-]+\\.[A-Z]{2,6}\\b"
                                                                           options:NSRegularExpressionCaseInsensitive
                                                                             error:&error];
    
    NSUInteger numberOfMatches = [regex numberOfMatchesInString:self options:0 range:NSMakeRange(0, [self length])];
    
    return (numberOfMatches > 0) ? YES : NO;
}

- (NSString*) googleAddressSearchFormat
{
    NSString *result = [self stringByReplacingOccurrencesOfString:@" " withString:@"+"];
    return [result stringByReplacingOccurrencesOfString:@"\n" withString:@","];
}

- (NSString*) phoneAppFriendlyNumber
{
    NSError *error = NULL;
    
    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"[A-Za-z]|[ \\-+,!@£$%^&*(){}\?.<>~`;:'|/\"\\[\\]\\\\]"
                                                                           options:NSRegularExpressionCaseInsensitive
                                                                             error:&error];
    
    if(!error)
        return [regex stringByReplacingMatchesInString:self options:0 range:NSMakeRange(0, [self length]) withTemplate:@""];

    return self;
}

- (NSString*) safariFriendlyURL
{
    NSRange range = [self rangeOfString:@"http://"];
    
    if(range.location == NSNotFound)
        return [NSString stringWithFormat:@"http://%@",self];
    
    return self;
}

@end