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/*
This file is part of libkdepim.
Copyright (c) 2002 Cornelius Schumacher <schumacher@kde.org>
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 <config.h>
#include <time.h>
#include <unistd.h>
#include <stdlib.h>
#include <qstring.h>
#include <kstandarddirs.h>
#include <kglobal.h>
#include <kconfig.h>
#include <klocale.h>
#include <kdebug.h>
#include "kpimprefs.h"
KPimPrefs::KPimPrefs( const QString &name )
: KConfigSkeleton( name )
{
}
KPimPrefs::~KPimPrefs()
{
}
void KPimPrefs::usrSetDefaults()
{
setCategoryDefaults();
}
void KPimPrefs::usrReadConfig()
{
kdDebug(5300) << "KPimPrefs::usrReadConfig()" << endl;
config()->setGroup("General");
mCustomCategories = config()->readListEntry( "Custom Categories" );
if ( mCustomCategories.isEmpty() ) setCategoryDefaults();
mCustomCategories.sort();
}
const QString KPimPrefs::timezone()
{
QString zone = "";
// Read TimeZoneId from korganizerrc.
KConfig korgcfg( locate( "config", "korganizerrc" ) );
korgcfg.setGroup( "Time & Date" );
QString tz( korgcfg.readEntry( "TimeZoneId" ) );
if ( !tz.isEmpty() ) {
zone = tz;
kdDebug(5300) << "timezone from korganizerrc is " << zone << endl;
}
// If timezone not found in KOrg, use the system's default timezone.
if ( zone.isEmpty() ) {
char zonefilebuf[ PATH_MAX ];
int len = readlink( "/etc/localtime", zonefilebuf, PATH_MAX );
if ( len > 0 && len < PATH_MAX ) {
zone = QString::fromLocal8Bit( zonefilebuf, len );
zone = zone.mid( zone.find( "zoneinfo/" ) + 9 );
kdDebug(5300) << "system timezone from /etc/localtime is " << zone
<< endl;
} else {
tzset();
zone = tzname[ 0 ];
kdDebug(5300) << "system timezone from tzset() is " << zone << endl;
}
}
return( zone );
}
QDateTime KPimPrefs::utcToLocalTime( const QDateTime &_dt,
const QString &timeZoneId )
{
QDateTime dt(_dt);
// kdDebug() << "--- UTC: " << dt.toString() << endl;
int yearCorrection = 0;
// The timezone conversion only works for dates > 1970
// For dates < 1970 we adjust the date to be in 1970,
// do the correction there and then re-adjust back.
// Actually, we use 1971 to prevent errors around
// January 1, 1970
int year = dt.date().year();
if (year < 1971)
{
yearCorrection = 1971 - year;
dt = dt.addYears(yearCorrection);
// kdDebug() << "--- Adjusted UTC: " << dt.toString() << endl;
}
QCString origTz = getenv("TZ");
setenv( "TZ", "UTC", 1 );
time_t utcTime = dt.toTime_t();
setenv( "TZ", timeZoneId.local8Bit(), 1 );
struct tm *local = localtime( &utcTime );
if ( origTz.isNull() ) {
unsetenv( "TZ" );
} else {
setenv( "TZ", origTz, 1 );
}
tzset();
QDateTime result( QDate( local->tm_year + 1900 - yearCorrection,
local->tm_mon + 1, local->tm_mday ),
QTime( local->tm_hour, local->tm_min, local->tm_sec ) );
// kdDebug() << "--- LOCAL: " << result.toString() << endl;
return result;
}
QDateTime KPimPrefs::localTimeToUtc( const QDateTime &_dt,
const QString &timeZoneId )
{
QDateTime dt(_dt);
// kdDebug() << "--- LOCAL: " << dt.toString() << endl;
int yearCorrection = 0;
// The timezone conversion only works for dates > 1970
// For dates < 1970 we adjust the date to be in 1970,
// do the correction there and then re-adjust back.
// Actually, we use 1971 to prevent errors around
// January 1, 1970
int year = dt.date().year();
if (year < 1971)
{
yearCorrection = 1971 - year;
dt = dt.addYears(yearCorrection);
// kdDebug() << "--- Adjusted LOCAL: " << dt.toString() << endl;
}
QCString origTz = getenv("TZ");
setenv( "TZ", timeZoneId.local8Bit(), 1 );
time_t localTime = dt.toTime_t();
setenv( "TZ", "UTC", 1 );
struct tm *utc = gmtime( &localTime );
if ( origTz.isNull() ) {
unsetenv( "TZ" );
} else {
setenv( "TZ", origTz, 1 );
}
tzset();
QDateTime result( QDate( utc->tm_year + 1900 - yearCorrection,
utc->tm_mon + 1, utc->tm_mday ),
QTime( utc->tm_hour, utc->tm_min, utc->tm_sec ) );
// kdDebug() << "--- UTC: " << result.toString() << endl;
return result;
}
void KPimPrefs::usrWriteConfig()
{
config()->setGroup( "General" );
config()->writeEntry( "Custom Categories", mCustomCategories );
}
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