102 lines
2.7 KiB
Objective-C
102 lines
2.7 KiB
Objective-C
/*
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* $Id: SecondsFormatter.m 227 2007-01-21 06:22:13Z stephen_booth $
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*
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* Copyright (C) 2006 - 2007 Stephen F. Booth <me@sbooth.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#import "SecondsFormatter.h"
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@implementation SecondsFormatter
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- (NSString *)stringForObjectValue:(id)object {
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NSString *result = nil;
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unsigned value;
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unsigned days = 0;
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unsigned hours = 0;
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unsigned minutes = 0;
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unsigned seconds = 0;
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if(nil == object || NO == [object isKindOfClass:[NSNumber class]] || isnan([object doubleValue])) {
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return @"";
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}
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value = (unsigned)([object doubleValue]);
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seconds = value % 60;
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minutes = value / 60;
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while(60 <= minutes) {
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minutes -= 60;
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++hours;
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}
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while(24 <= hours) {
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hours -= 24;
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++days;
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}
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if(0 < days) {
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result = [NSString stringWithFormat:@"%u:%.2u:%.2u:%.2u", days, hours, minutes, seconds];
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} else if(0 < hours) {
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result = [NSString stringWithFormat:@"%u:%.2u:%.2u", hours, minutes, seconds];
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} else if(0 < minutes) {
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result = [NSString stringWithFormat:@"%u:%.2u", minutes, seconds];
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} else {
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result = [NSString stringWithFormat:@"0:%.2u", seconds];
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}
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return result;
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}
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- (BOOL)getObjectValue:(id *)object forString:(NSString *)string errorDescription:(NSString **)error {
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NSScanner *scanner = nil;
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BOOL result = NO;
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int value = 0;
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unsigned seconds = 0;
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scanner = [NSScanner scannerWithString:string];
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while(NO == [scanner isAtEnd]) {
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// Grab a value
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if([scanner scanInt:&value]) {
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seconds *= 60;
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seconds += value;
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result = YES;
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}
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// Grab the separator, if present
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[scanner scanString:@":" intoString:NULL];
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}
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if(result && NULL != object) {
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*object = [NSNumber numberWithUnsignedInt:seconds];
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} else if(NULL != error) {
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*error = @"Couldn't convert value to seconds";
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}
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return result;
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}
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- (NSAttributedString *)attributedStringForObjectValue:(id)object withDefaultAttributes:(NSDictionary *)attributes {
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NSAttributedString *result = nil;
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result = [[NSAttributedString alloc] initWithString:[self stringForObjectValue:object] attributes:attributes];
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return result;
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}
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@end
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