/**
* Returns the GCalendar timezone offset in seconds. The given
* date is used to be DST compatible.
*
* @param $date
* @return offset in seconds
*/
function getGCalendarTZOffset($date = null)
{
static $tzs;
if ($tzs == null) {
$tzs = parse_ini_file(JPATH_SITE . DS . 'components' . DS . 'com_gcalendar' . DS . 'models' . DS . 'timezones.ini');
}
$tz = GCalendarUtil::getComponentParameter('timezone');
$offset = '00:00';
if (!empty($tz)) {
$offset = $tzs[$tz];
}
if ($date == null) {
$date = time();
}
$dst = GCalendarModelJSONFeed::isDST($date) ? 1 : 0;
$gcalendarOffset = ((int) substr($offset, 1, 3) - $dst) * 60 + substr($offset, 3);
$gcalendarOffset = substr($offset, 0, 1) == '-' ? -1 * $gcalendarOffset : $gcalendarOffset;
return $gcalendarOffset * 60;
}
}
$requestedDayStart += $SECSINDAY;
$isDST = GCalendarModelJSONFeed::isDST($requestedDayStart, $serverTz);
$dstAdjustment = 0;
if ($wasDSTStart && !$isDST) {
$dstAdjustment = 3600;
$wasDSTStart = $isDST;
} else {
if (!$wasDSTStart && $isDST) {
$dstAdjustment = -3600;
$wasDSTStart = $isDST;
}
}
$requestedDayStart += $dstAdjustment;
$requestedDayEnd = $requestedDayStart + $SECSINDAY;
$isDST = GCalendarModelJSONFeed::isDST($requestedDayEnd, $serverTz);
$dstAdjustment = 0;
if ($wasDSTEnd && !$isDST) {
$dstAdjustment = 3600;
$wasDSTEnd = $isDST;
} else {
if (!$wasDSTEnd && $isDST) {
$dstAdjustment = -3600;
$wasDSTEnd = $isDST;
}
}
$requestedDayEnd += $dstAdjustment;
}
echo json_encode($data);
?>
