/core/externals/google-toolbox-for-mac/Foundation/GTMNSString+Replace.m
Objective C | 53 lines | 18 code | 9 blank | 26 comment | 2 complexity | 559a1818976c6a63099fc17541d4b0ed MD5 | raw file
1// 2// GTMNSString+Replace.m 3// 4// Copyright 2006-2008 Google Inc. 5// 6// Licensed under the Apache License, Version 2.0 (the "License"); you may not 7// use this file except in compliance with the License. You may obtain a copy 8// of the License at 9// 10// http://www.apache.org/licenses/LICENSE-2.0 11// 12// Unless required by applicable law or agreed to in writing, software 13// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 14// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 15// License for the specific language governing permissions and limitations under 16// the License. 17// 18 19#import "GTMNSString+Replace.h" 20 21 22@implementation NSString (GTMStringReplaceAdditions) 23 24#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5 25// 10.5 has stringByReplacingOccurrencesOfString:withString:, use that directly. 26 27- (NSString *)gtm_stringByReplacingString:(NSString *)target 28 withString:(NSString *)replacement { 29 // If |target| was nil, then do nothing and return |self| 30 // 31 // We do the retain+autorelease dance here because of this use case: 32 // NSString *s1 = [[NSString alloc] init...]; 33 // NSString *s2 = [s1 stringByReplacingString:@"foo" withString:@"bar"]; 34 // [s1 release]; // |s2| still needs to be valid after this line 35 if (!target) 36 return [[self retain] autorelease]; 37 38 // If |replacement| is nil we want it to be treated as if @"" was specified 39 // ... effectively removing |target| from self 40 if (!replacement) 41 replacement = @""; 42 43 NSMutableString *result = [[self mutableCopy] autorelease]; 44 [result replaceOccurrencesOfString:target 45 withString:replacement 46 options:0 47 range:NSMakeRange(0, [result length])]; 48 return result; 49} 50 51#endif // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5 52 53@end