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//
// GTMNSString+Replace.m
//
// Copyright 2006-2008 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
//
#import "GTMNSString+Replace.h"
@implementation NSString (GTMStringReplaceAdditions)
#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
// 10.5 has stringByReplacingOccurrencesOfString:withString:, use that directly.
- (NSString *)gtm_stringByReplacingString:(NSString *)target
withString:(NSString *)replacement {
// If |target| was nil, then do nothing and return |self|
//
// We do the retain+autorelease dance here because of this use case:
// NSString *s1 = [[NSString alloc] init...];
// NSString *s2 = [s1 stringByReplacingString:@"foo" withString:@"bar"];
// [s1 release]; // |s2| still needs to be valid after this line
if (!target)
return [[self retain] autorelease];
// If |replacement| is nil we want it to be treated as if @"" was specified
// ... effectively removing |target| from self
if (!replacement)
replacement = @"";
NSMutableString *result = [[self mutableCopy] autorelease];
[result replaceOccurrencesOfString:target
withString:replacement
options:0
range:NSMakeRange(0, [result length])];
return result;
}
#endif // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
@end
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