/*
 * Diff Match and Patch
 * Copyright 2018 The diff-match-patch Authors.
 * https://github.com/google/diff-match-patch
 *
 * 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.
 *
 * Author: fraser@google.com (Neil Fraser)
 * ObjC port: jan@geheimwerk.de (Jan Weiß)
 */

#import "NSString+UnicharUtilities.h"


@implementation NSString (UnicharUtilities)

+ (NSString *)diff_stringFromUnichar:(unichar)ch;
{
  CFStringRef c = CFStringCreateWithCharacters(kCFAllocatorDefault, &ch, 1);
  CFMakeCollectable(c);
  return [(NSString *)c autorelease];
}

- (NSString *)diff_substringWithCharacterAtIndex:(NSUInteger)anIndex;
{
  return [self substringWithRange:NSMakeRange(anIndex, 1)];
}

@end
