nsstring-validate.mm

来自「lumaqq」· MM 代码 · 共 40 行

/*
 * LumaQQ - Cross platform QQ client, special edition for Mac
 *
 * Copyright (C) 2007 luma <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#import "NSString-Validate.h"


@implementation NSString (Validate)

- (BOOL)isEmpty {
	return [[self stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length] == 0;
}

- (BOOL)isNewLine {
	if([self length] == 1)
		return [self characterAtIndex:0] == '\n' || [self characterAtIndex:0] == '\r';
	else if([self length] == 2)
		return [self characterAtIndex:0] == '\r' && [self characterAtIndex:1] == '\n';
	else
		return NO;
}

@end