/* * $Id: SecondsFormatter.m 227 2007-01-21 06:22:13Z stephen_booth $ * * Copyright (C) 2006 - 2007 Stephen F. Booth * * 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 "SecondsFormatter.h" @implementation SecondsFormatter - (NSString *) stringForObjectValue:(id)object { NSString *result = nil; unsigned value; unsigned days = 0; unsigned hours = 0; unsigned minutes = 0; unsigned seconds = 0; if(nil == object || NO == [object isKindOfClass:[NSNumber class]] || isnan([object doubleValue])) { return nil; } value = (unsigned)([object doubleValue]); seconds = value % 60; minutes = value / 60; while(60 <= minutes) { minutes -= 60; ++hours; } while(24 <= hours) { hours -= 24; ++days; } if(0 < days) { result = [NSString stringWithFormat:@"%u:%.2u:%.2u:%.2u", days, hours, minutes, seconds]; } else if(0 < hours) { result = [NSString stringWithFormat:@"%u:%.2u:%.2u", hours, minutes, seconds]; } else if(0 < minutes) { result = [NSString stringWithFormat:@"%u:%.2u", minutes, seconds]; } else { result = [NSString stringWithFormat:@"0:%.2u", seconds]; } return result; } - (BOOL) getObjectValue:(id *)object forString:(NSString *)string errorDescription:(NSString **)error { NSScanner *scanner = nil; BOOL result = NO; int value = 0; unsigned seconds = 0; scanner = [NSScanner scannerWithString:string]; while(NO == [scanner isAtEnd]) { // Grab a value if([scanner scanInt:&value]) { seconds *= 60; seconds += value; result = YES; } // Grab the separator, if present [scanner scanString:@":" intoString:NULL]; } if(result && NULL != object) { *object = [NSNumber numberWithUnsignedInt:seconds]; } else if(NULL != error) { *error = @"Couldn't convert value to seconds"; } return result; } - (NSAttributedString *) attributedStringForObjectValue:(id)object withDefaultAttributes:(NSDictionary *)attributes { NSAttributedString *result = nil; result = [[NSAttributedString alloc] initWithString:[self stringForObjectValue:object] attributes:attributes]; return [result autorelease]; } @end