code.grnet.gr Git - pithos-ios/blob - Classes/NSString+Conveniences.m

   1 //
   2 //  NSString+Conveniences.m
   3 //  OpenStack
   4 //
   5 //  Created by Mike Mayo on 10/9/10.
   6 //  The OpenStack project is provided under the Apache 2.0 license.
   7 //
   8
   9 #import "NSString+Conveniences.h"
  10
  11 @implementation NSString (Conveniences)
  12
  13 - (BOOL)isURL {
  14 //    return [self hasPrefix:@"http://"] || [self hasPrefix:@"https://"];
  15     return [[NSPredicate predicateWithFormat:@"SELF MATCHES %@",
  16              @"(http|https)://((\\w)*|([0-9]*)|([-|_])*)+([\\.|/]((\\w)*|([0-9]*)|([-|_])*))+"]
  17             evaluateWithObject:self];
  18 }
  19
  20 - (NSString *)replace:(NSString *)s with:(NSString *)r {
  21     if ([r isKindOfClass:[NSString class]]) {
  22         return [self stringByReplacingOccurrencesOfString:s withString:r];
  23     } else {
  24         return [self stringByReplacingOccurrencesOfString:s withString:[r description]];
  25     }
  26 }
  27
  28 - (NSString *)replace:(NSString *)s withInt:(NSInteger)i {
  29     return [self replace:s with:[NSString stringWithFormat:@"%i", i]];
  30 }
  31
  32 + (NSString *)encodeToPercentEscape:(NSString *)string {
  33     return [((NSString *)CFURLCreateStringByAddingPercentEscapes(NULL,
  34                                                                  (CFStringRef)string,
  35                                                                  NULL,
  36                                                                  (CFStringRef)@"!*'();:@&=+$,/?%#[]",
  37                                                                  kCFStringEncodingUTF8)) autorelease];
  38 }
  39
  40 + (NSString *)encodeToPercentEscape:(NSString *)string charactersToEncode:(NSString *)charactersToEncode {
  41     return [((NSString *)CFURLCreateStringByAddingPercentEscapes(NULL,
  42                                                                  (CFStringRef)string,
  43                                                                  NULL,
  44                                                                  (CFStringRef)charactersToEncode,
  45                                                                  kCFStringEncodingUTF8)) autorelease];
  46 }
  47
  48
  49 + (NSString *)decodeFromPercentEscape:(NSString *)string {
  50     return [((NSString *)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(NULL,
  51                                                                                  (CFStringRef)string,
  52                                                                                  (CFStringRef)@"",
  53                                                                                  kCFStringEncodingUTF8)) autorelease];
  54 }
  55
  56 @end