/**
* creates formatted output for calendar component property data value type recur
*
* @author Kjell-Inge Gustafsson, kigkonsult <*****@*****.**>
* @since 2.16.25 - 2013-06-30
* @param array $recurlabel
* @param array $recurdata
* @uses calendarComponent::getConfig()
* @uses calendarComponent::_createElement()
* @uses calendarComponent::_createParams()
* @uses iCalUtilityFunctions::_date2strdate()
* @uses iCalUtilityFunctions::_recurBydaySort()
* @return string
*/
function _format_recur($recurlabel, $recurdata)
{
$output = null;
foreach ($recurdata as $therule) {
if (empty($therule['value'])) {
if ($this->getConfig('allowEmpty')) {
$output .= $this->_createElement($recurlabel);
}
continue;
}
$attributes = isset($therule['params']) ? $this->_createParams($therule['params']) : null;
$content1 = $content2 = null;
foreach ($therule['value'] as $rulelabel => $rulevalue) {
switch (strtoupper($rulelabel)) {
case 'FREQ':
$content1 .= "FREQ={$rulevalue}";
break;
case 'UNTIL':
$parno = isset($rulevalue['hour']) ? 7 : 3;
$content2 .= ';UNTIL=' . iCalUtilityFunctions::_date2strdate($rulevalue, $parno);
break;
case 'COUNT':
case 'INTERVAL':
case 'WKST':
$content2 .= ";{$rulelabel}={$rulevalue}";
break;
case 'BYSECOND':
case 'BYMINUTE':
case 'BYHOUR':
case 'BYMONTHDAY':
case 'BYYEARDAY':
case 'BYWEEKNO':
case 'BYMONTH':
case 'BYSETPOS':
$content2 .= ";{$rulelabel}=";
if (is_array($rulevalue)) {
foreach ($rulevalue as $vix => $valuePart) {
$content2 .= $vix ? ',' : null;
$content2 .= $valuePart;
}
} else {
$content2 .= $rulevalue;
}
break;
case 'BYDAY':
$byday = array('');
$bx = 0;
foreach ($rulevalue as $bix => $bydayPart) {
if (!empty($byday[$bx]) && !ctype_digit(substr($byday[$bx], -1))) {
// new day
$byday[++$bx] = '';
}
if (!is_array($bydayPart)) {
// day without order number
$byday[$bx] .= (string) $bydayPart;
} else {
// day with order number
foreach ($bydayPart as $bix2 => $bydayPart2) {
$byday[$bx] .= (string) $bydayPart2;
}
}
}
// end foreach( $rulevalue as $bix => $bydayPart )
if (1 < count($byday)) {
usort($byday, array('iCalUtilityFunctions', '_recurBydaySort'));
}
$content2 .= ';BYDAY=' . implode(',', $byday);
break;
default:
$content2 .= ";{$rulelabel}={$rulevalue}";
break;
}
}
$output .= $this->_createElement($recurlabel, $attributes, $content1 . $content2);
}
return $output;
}
/**
* transforms a dateTime from a timezone to another using PHP DateTime and DateTimeZone class (PHP >= PHP 5.2.0)
*
* @author Kjell-Inge Gustafsson, kigkonsult <*****@*****.**>
* @since 2.15.1 - 2012-10-17
* @param mixed $date, date to alter
* @param string $tzFrom, PHP valid 'from' timezone
* @param string $tzTo, PHP valid 'to' timezone, default 'UTC'
* @param string $format, date output format, default 'Ymd\THis'
* @return bool
*/
public static function transformDateTime(&$date, $tzFrom, $tzTo = 'UTC', $format = 'Ymd\\THis')
{
if (is_array($date) && isset($date['timestamp'])) {
try {
$d = new DateTime("@{$date['timestamp']}");
// set UTC date
$d->setTimezone(new DateTimeZone($tzFrom));
// convert to 'from' date
} catch (Exception $e) {
return FALSE;
}
} else {
if (iCalUtilityFunctions::_isArrayDate($date)) {
if (isset($date['tz'])) {
unset($date['tz']);
}
$date = iCalUtilityFunctions::_date2strdate(iCalUtilityFunctions::_chkDateArr($date));
}
if ('Z' == substr($date, -1)) {
$date = substr($date, 0, strlen($date) - 2);
}
try {
$d = new DateTime($date, new DateTimeZone($tzFrom));
} catch (Exception $e) {
return FALSE;
}
}
try {
$d->setTimezone(new DateTimeZone($tzTo));
} catch (Exception $e) {
return FALSE;
}
$date = $d->format($format);
return TRUE;
}
