WITimeIntervalFormatter.m

/* $Id$ */

/*
 *  Copyright (c) 2009 Axel Andersson
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#import <WiredFoundation/WITimeIntervalFormatter.h>

@implementation WITimeIntervalFormatter

- (NSString *)stringFromTimeInterval:(NSTimeInterval)interval {
        NSString                *string;
        NSUInteger              days, hours, minutes, seconds;
        BOOL                    past = NO;

        interval = rint(interval);

        if(interval < 0) {
                past = YES;
                interval = -interval;
        }

        days = interval / 86400;
        interval -= days * 86400;

        hours = interval / 3600;
        interval -= hours * 3600;

        minutes = interval / 60;
        interval -= minutes * 60;

        seconds = interval;

        if(days > 0) {
                string = [NSSWF:
                        WILS(@"%lu:%0.2lu:%0.2lu:%0.2lu days", @"NSString-WIFoundation: time strings (days, hours, minutes, seconds)"),
                        days, hours, minutes, seconds];
        }
        else if(hours > 0) {
                string = [NSSWF:
                        WILS(@"%0.2lu:%0.2lu:%0.2lu hours", @"NSString-WIFoundation: time strings (hours, minutes, seconds)"),
                        hours, minutes, seconds];
        }
        else if(minutes > 0) {
                string = [NSSWF:
                        WILS(@"%0.2lu:%0.2lu minutes", @"NSString-WIFoundation: time strings (minutes, seconds)"),
                        minutes, seconds];
        }
        else {
                string = [NSSWF:
                        WILS(@"00:%0.2lu seconds", @"NSString-WIFoundation: time string (minutes, seconds)"),
                        seconds];
        }

        if(past)
                string = [NSSWF:WILS(@"%@ ago", @"NSString-WIFoundation: time string"), string];

        return string;
}



- (NSString *)stringFromTimeIntervalSinceDate:(NSDate *)date {
        return [self stringFromTimeInterval:[[NSDate date] timeIntervalSinceDate:date]];
}



- (NSString *)stringFromNumber:(NSNumber *)number {
        return [self stringFromTimeInterval:[number doubleValue]];
}



- (NSString *)stringForObjectValue:(id)object {
        return [self stringFromTimeInterval:[object doubleValue]];
}

@end