freeforall/NSString+Utilities.m at master · johnkdoe/freeforall · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
//
//  NSString+Utilities.m
//  xolaware utilities
//
//  Created by me on 2012.04.09.

#include "xolawareOpenSourceCopyright.h"	//  Copyright (c) 2012 xolaware.

#import "NSString+Utilities.h"

@implementation NSString (Utilities)

- (BOOL)isNonEmpty {
	return ![self isEqualToString:@""];
}

- (NSString*)stringByLocalizingThenAppending:(NSString*)stringToAppend {
	return [NSLocalizedString(self, nil) stringByAppendingString:stringToAppend];
}

- (NSURL*)urlForMainBundleResourceHTML {
	NSString* resPath = [[NSBundle mainBundle] pathForResource:self ofType:@"html"];
	if (resPath)
		return [NSURL fileURLWithPath:resPath];
	return nil;
}

- (NSDictionary*)dictionaryInterpretingContentsAsHttpQuery {
	NSArray* parameters = [self componentsSeparatedByString:@"&"];
	if (2 > parameters.count || 0 != parameters.count % 2)
		return nil;
	NSMutableDictionary* items = [NSMutableDictionary dictionaryWithCapacity:parameters.count];
	for (NSString* parameter in parameters)
	{
		NSArray* parameterKeyEqualValue = [parameter componentsSeparatedByString:@"="];
		if (2 != parameterKeyEqualValue.count)
			continue;	// skip this one w.r.t inserting it in the dictionary
		[items setValue:parameterKeyEqualValue[1] forKey:parameterKeyEqualValue[0]];
	}
	return items.count ? items.copy : nil;
}

- (BOOL)hasCharacterInSet:(NSCharacterSet*)charSet {
	return NSNotFound != [self rangeOfCharacterFromSet:charSet].location;
}

- (BOOL)hasEmailTraits {
	NSUInteger atSign = [self rangeOfString:@"@"].location;
	NSUInteger dot = [self rangeOfString:@"." options:NSBackwardsSearch].location;

	// cursory check, this should catch a bunch
	return NSNotFound != atSign && NSNotFound != dot
		&& atSign != 0 && atSign < (dot-1) && dot < self.length-2;
}

- (BOOL)hasNewline {
	return [self hasCharacterInSet:[NSCharacterSet newlineCharacterSet]];
}

- (BOOL)hasWhitespace {
	return [self hasCharacterInSet:[NSCharacterSet whitespaceCharacterSet]];
}

- (BOOL)hasWhitespaceOrNewline {
	return [self hasCharacterInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}

- (NSString*)uuidStringByCompactingExistingUUID {
	return [[self stringByReplacingOccurrencesOfString:@"-" withString:@""] lowercaseString];
}

+ (NSString*)generateCompactUUID {
	NSString* uuidStr;
	if (UIDevice.currentDevice.systemVersion.floatValue >= 6.0)
		uuidStr = [[NSUUID UUID] UUIDString];
#if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_6_0
	else // if the above check kicks in, then we're no longer even building for pre-iOS6
	{
		CFUUIDRef u = CFUUIDCreate(NULL);
		CFStringRef s = CFUUIDCreateString(NULL, u);
		CFRelease(u);
		uuidStr = ((__bridge NSString *)s).copy;
		CFRelease(s);
	}
#endif
	return [uuidStr uuidStringByCompactingExistingUUID];
}

@end