NSString+compactDescription.m   [plain text]

/*
 * Copyright (c) 2013-2014 Apple Inc. All Rights Reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */


#import "NSString+compactDescription.h"

@implementation NSString (compactDescription)

-(NSString*)compactDescription
{
	static NSCharacterSet *forceQuotes = nil;
	static dispatch_once_t setup;
	dispatch_once(&setup, ^{
		forceQuotes = [NSCharacterSet characterSetWithCharactersInString:@"\"' \t\n\r="];
	});
	
	if ([self rangeOfCharacterFromSet:forceQuotes].location != NSNotFound) {
		NSString *escaped = [self stringByReplacingOccurrencesOfString:@"\\" withString:@"\\\\"];
		escaped = [escaped stringByReplacingOccurrencesOfString:@"\"" withString:@"\\\""];
		return [NSString stringWithFormat:@"\"%@\"", escaped];
	} else {
		return self;
	}
}

@end