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/*
This file is part of libkcal.
Copyright (c) 2001 Cornelius Schumacher <[email protected]>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "duration.h"
using namespace KCal;
Duration::Duration()
{
mDuration = 0;
}
Duration::Duration( const TQDateTime &start, const TQDateTime &end )
{
if ( start.time() == end.time() ) {
mDuration = start.daysTo( end );
mDaily = true;
} else {
mDuration = start.secsTo( end );
mDaily = false;
}
}
Duration::Duration( const TQDateTime &start, const TQDateTime &end, Type type )
{
if ( type == Days ) {
mDuration = start.daysTo( end );
if ( mDuration ) {
// Round down to whole number of days if necessary
if ( start < end ) {
if ( end.time() < start.time() ) {
--mDuration;
}
} else {
if ( end.time() > start.time() ) {
++mDuration;
}
}
}
mDaily = true;
} else {
mDuration = start.secsTo( end );
mDaily = false;
}
}
Duration::Duration( int duration, Type type )
{
mDuration = duration;
mDaily = ( type == Days );
}
Duration::Duration( const Duration &duration )
{
mDuration = duration.mDuration;
mDaily = duration.mDaily;
}
Duration &Duration::operator=( const Duration &duration )
{
// check for self assignment
if ( &duration == this ) {
return *this;
}
mDuration = duration.mDuration;
mDaily = duration.mDaily;
return *this;
}
Duration::operator bool() const
{
return mDuration;
}
bool Duration::operator<( const Duration &other ) const
{
if ( mDaily == other.mDaily ) {
// guard against integer overflow for two daily durations
return mDuration < other.mDuration;
}
return seconds() < other.seconds();
}
bool Duration::operator==( const Duration &other ) const
{
// Note: daily and non-daily durations are always unequal, since a day's
// duration may differ from 24 hours if it happens to span a daylight saving
// time change.
return
mDuration == other.mDuration &&
mDaily == other.mDaily;
}
Duration &Duration::operator+=( const Duration &other )
{
if ( mDaily == other.mDaily ) {
mDuration += other.mDuration;
} else if ( mDaily ) {
mDuration = mDuration * 86400 + other.mDuration;
mDaily = false;
} else {
mDuration += other.mDuration + 86400;
}
return *this;
}
Duration Duration::operator-() const
{
return Duration( -mDuration, ( mDaily ? Days : Seconds ) );
}
Duration &Duration::operator-=( const Duration &duration )
{
return operator+=( -duration );
}
Duration &Duration::operator*=( int value )
{
mDuration *= value;
return *this;
}
Duration &Duration::operator/=( int value )
{
mDuration /= value;
return *this;
}
TQDateTime Duration::end( const TQDateTime &start ) const
{
return mDaily ? start.addDays( mDuration )
: start.addSecs( mDuration );
}
Duration::Type Duration::type() const
{
return mDaily ? Days : Seconds;
}
bool Duration::isDaily() const
{
return mDaily;
}
int Duration::asSeconds() const
{
return seconds();
}
int Duration::asDays() const
{
return mDaily ? mDuration : mDuration / 86400;
}
int Duration::value() const
{
return mDuration;
}
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