/**
* 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;
}
/**
* sort iCal compoments
*
* ascending sort on properties (if exist) x-current-dtstart, dtstart,
* x-current-dtend, dtend, x-current-due, due, duration, created, dtstamp, uid if called without arguments,
* otherwise sorting on specific (argument) property values
*
* @author Kjell-Inge Gustafsson, kigkonsult <*****@*****.**>
* @since 2.16.4 - 2012-12-17
* @param string $sortArg, optional
* @return void
*
*/
function sort($sortArg = FALSE)
{
if (is_array($this->components)) {
if ($sortArg) {
$sortArg = strtoupper($sortArg);
if (!in_array($sortArg, array('ATTENDEE', 'CATEGORIES', 'CONTACT', 'DTSTAMP', 'LOCATION', 'ORGANIZER', 'PRIORITY', 'RELATED-TO', 'RESOURCES', 'STATUS', 'SUMMARY', 'UID', 'URL'))) {
$sortArg = FALSE;
}
}
/* set sort parameters for each component */
foreach ($this->components as $cix => &$c) {
$c->srtk = array('0', '0', '0', '0');
if ('VTimeZone' == $c->objName) {
if (FALSE === ($c->srtk[0] = $c->getProperty('tzid'))) {
$c->srtk[0] = 0;
}
continue;
} elseif ($sortArg) {
if ('ATTENDEE' == $sortArg || 'CATEGORIES' == $sortArg || 'CONTACT' == $sortArg || 'RELATED-TO' == $sortArg || 'RESOURCES' == $sortArg) {
$propValues = array();
$c->_getProperties($sortArg, $propValues);
if (!empty($propValues)) {
$sk = array_keys($propValues);
$c->srtk[0] = $sk[0];
if ('RELATED-TO' == $sortArg) {
$c->srtk[0] .= $c->getProperty('uid');
}
} elseif ('RELATED-TO' == $sortArg) {
$c->srtk[0] = $c->getProperty('uid');
}
} elseif (FALSE !== ($d = $c->getProperty($sortArg))) {
$c->srtk[0] = $d;
if ('UID' == $sortArg) {
if (FALSE !== ($d = $c->getProperty('recurrence-id'))) {
$c->srtk[1] = ICalUtilityFunctions::_date2strdate($d);
if (FALSE === ($c->srtk[2] = $c->getProperty('sequence'))) {
$c->srtk[2] = PHP_INT_MAX;
}
} else {
$c->srtk[1] = $c->srtk[2] = PHP_INT_MAX;
}
}
}
continue;
}
if (FALSE !== ($d = $c->getProperty('X-CURRENT-DTSTART'))) {
$c->srtk[0] = ICalUtilityFunctions::_strdate2date($d[1]);
unset($c->srtk[0]['unparsedtext']);
} elseif (FALSE === ($c->srtk[0] = $c->getProperty('dtstart'))) {
$c->srtk[1] = 0;
}
// sortkey 0 : dtstart
if (FALSE !== ($d = $c->getProperty('X-CURRENT-DTEND'))) {
$c->srtk[1] = ICalUtilityFunctions::_strdate2date($d[1]);
// sortkey 1 : dtend/due(/dtstart+duration)
unset($c->srtk[1]['unparsedtext']);
} elseif (FALSE === ($c->srtk[1] = $c->getProperty('dtend'))) {
if (FALSE !== ($d = $c->getProperty('X-CURRENT-DUE'))) {
$c->srtk[1] = ICalUtilityFunctions::_strdate2date($d[1]);
unset($c->srtk[1]['unparsedtext']);
} elseif (FALSE === ($c->srtk[1] = $c->getProperty('due'))) {
if (FALSE === ($c->srtk[1] = $c->getProperty('duration', FALSE, FALSE, TRUE))) {
$c->srtk[1] = 0;
}
}
}
if (FALSE === ($c->srtk[2] = $c->getProperty('created'))) {
// sortkey 2 : created/dtstamp
if (FALSE === ($c->srtk[2] = $c->getProperty('dtstamp'))) {
$c->srtk[2] = 0;
}
}
if (FALSE === ($c->srtk[3] = $c->getProperty('uid'))) {
// sortkey 3 : uid
$c->srtk[3] = 0;
}
}
// end foreach( $this->components as & $c
/* sort */
usort($this->components, array('ICalUtilityFunctions', '_cmpfcn'));
}
}
/**
* creates formatted output for calendar component property data value type recur
*
* @author Kjell-Inge Gustafsson, kigkonsult <*****@*****.**>
* @since 2.14.1 - 2012-10-06
* @param array $recurlabel
* @param array $recurdata
* @return string
*/
function _format_recur($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 => $rulevalue) {
switch ($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':
$content2 .= ";{$rulelabel}=";
$bydaycnt = 0;
foreach ($rulevalue as $vix => $valuePart) {
$content21 = $content22 = null;
if (is_array($valuePart)) {
$content2 .= $bydaycnt ? ',' : null;
foreach ($valuePart as $vix2 => $valuePart2) {
if ('DAY' != strtoupper($vix2)) {
$content21 .= $valuePart2;
} else {
$content22 .= $valuePart2;
}
}
$content2 .= $content21 . $content22;
$bydaycnt++;
} else {
$content2 .= $bydaycnt ? ',' : null;
if ('DAY' != strtoupper($vix)) {
$content21 .= $valuePart;
} else {
$content22 .= $valuePart;
$bydaycnt++;
}
$content2 .= $content21 . $content22;
}
}
break;
default:
$content2 .= ";{$rulelabel}={$rulevalue}";
break;
}
}
$output .= $this->_createElement($recurlabel, $attributes, $content1 . $content2);
}
return $output;
}
