/**
* Returns a new block-object for the section/data-pair. The list
* of returned objects is:
*
* vcalendar => SG_iCal_VCalendar
* vtimezone => SG_iCal_VTimeZone
* vevent => SG_iCal_VEvent
* * => ArrayObject
*
* @param $ical SG_iCalReader The reader this section/data-pair belongs to
* @param $section string
* @param SG_iCal_Line[]
*/
public static function factory(SG_iCal $ical, $section, $data)
{
switch ($section) {
case "vcalendar":
require_once dirname(__FILE__) . '/../blocks/SG_iCal_VCalendar.php';
return new SG_iCal_VCalendar(SG_iCal_Line::Remove_Line($data), $ical);
case "vtimezone":
require_once dirname(__FILE__) . '/../blocks/SG_iCal_VTimeZone.php';
return new SG_iCal_VTimeZone(SG_iCal_Line::Remove_Line($data), $ical);
case "vevent":
require_once dirname(__FILE__) . '/../blocks/SG_iCal_VEvent.php';
return new SG_iCal_VEvent($data, $ical);
default:
return new ArrayObject(SG_iCal_Line::Remove_Line((array) $data));
}
}
/**
* Parses the feed found in content and calls storeSection to store
* parsed data
* @param string $content
* @param SG_iCal $ical
*/
private static function _Parse($content, SG_iCal $ical)
{
$main_sections = array('vevent', 'vjournal', 'vtodo', 'vtimezone', 'vcalendar');
$array_idents = array('exdate', 'rdate');
$sections = array();
$section = '';
$current_data = array();
foreach ($content as $line) {
$line = new SG_iCal_Line($line);
if ($line->isBegin()) {
// New block of data, $section = new block
$section = strtolower($line->getData());
$sections[] = strtolower($line->getData());
} elseif ($line->isEnd()) {
// End of block of data ($removed = just ended block, $section = new top-block)
$removed = array_pop($sections);
$section = end($sections);
if (array_search($removed, $main_sections) !== false) {
self::StoreSection($removed, $current_data[$removed], $ical);
$current_data[$removed] = array();
}
} else {
// Data line
foreach ($main_sections as $s) {
// Loops though the main sections
if (array_search($s, $sections) !== false) {
// This section is in the main section
if ($section == $s) {
// It _is_ the main section else
if (in_array($line->getIdent(), $array_idents)) {
//exdate could appears more that once
$current_data[$s][$line->getIdent()][] = $line;
} else {
$current_data[$s][$line->getIdent()] = $line;
}
} else {
// Sub section
$current_data[$s][$section][$line->getIdent()] = $line;
}
break;
}
}
}
}
$current_data = array();
}
/**
* Constructs a new SG_iCal_VEvent. Needs the SG_iCalReader
* supplied so it can query for timezones.
* @param SG_iCal_Line[] $data
* @param SG_iCalReader $ical
*/
public function __construct($data, SG_iCal $ical)
{
$this->uid = $data['uid']->getData();
unset($data['uid']);
if (isset($data['rrule'])) {
$this->recurrence = new SG_iCal_Recurrence($data['rrule']);
unset($data['rrule']);
}
if (isset($data['exrule'])) {
$this->recurex = new SG_iCal_Recurrence($data['exrule']);
unset($data['exrule']);
}
if (isset($data['dtstart'])) {
$this->start = $this->getTimestamp($data['dtstart'], $ical);
unset($data['dtstart']);
}
if (isset($data['dtend'])) {
$this->end = $this->getTimestamp($data['dtend'], $ical);
unset($data['dtend']);
} elseif (isset($data['duration'])) {
$dur = new SG_iCal_Duration($data['duration']->getData());
$this->end = $this->start + $dur->getDuration();
unset($data['duration']);
}
//google cal set dtend as end of initial event (duration)
if (isset($this->recurrence)) {
//if there is a recurrence rule
//exclusions
if (isset($data['exdate'])) {
foreach ($data['exdate'] as $exdate) {
foreach ($exdate->getDataAsArray() as $ts) {
$this->excluded[] = strtotime($ts);
}
}
unset($data['exdate']);
}
//additions
if (isset($data['rdate'])) {
foreach ($data['rdate'] as $rdate) {
foreach ($rdate->getDataAsArray() as $ts) {
$this->added[] = strtotime($ts);
}
}
unset($data['rdate']);
}
$until = $this->recurrence->getUntil();
$count = $this->recurrence->getCount();
//check if there is either 'until' or 'count' set
if ($until) {
//ok..
} elseif ($count) {
//if count is set, then figure out the last occurrence and set that as the end date
$this->getFrequency();
$until = $this->freq->lastOccurrence($this->start);
} else {
//forever... limit to 3 years
$this->recurrence->setUntil('+3 years');
$until = $this->recurrence->getUntil();
}
//date_default_timezone_set( xx ) needed ?;
$this->laststart = strtotime($until);
$this->lastend = $this->laststart + $this->getDuration();
}
$imports = array('summary', 'description', 'location');
foreach ($imports as $import) {
if (isset($data[$import])) {
$this->{$import} = $data[$import]->getData();
unset($data[$import]);
}
}
if (isset($this->previous_tz)) {
date_default_timezone_set($this->previous_tz);
}
$this->data = SG_iCal_Line::Remove_Line($data);
}
/**
* Creates an recurrence object with a passed in line. Parses the line.
* @param object $line an SG_iCal_Line object which will be parsed to get the
* desired information.
*/
public function __construct(SG_iCal_Line $line)
{
$this->parseLine($line->getData());
}
/**
* Converts recurrence rule to array of string of dates.
*
* @param string $rule RUle.
*
* @return array Array of dates or empty array.
* @throws Ai1ec_Bootstrap_Exception
*/
protected function get_date_array_from_rule($rule)
{
if ('RDATE' !== substr($rule, 0, 5) && 'EXDATE' !== substr($rule, 0, 6)) {
return array();
}
$line = new SG_iCal_Line('RRULE:' . $rule);
$dates = $line->getDataAsArray();
$dates_as_strings = array();
foreach ($dates as $date) {
$date = str_replace(array('RDATE=', 'EXDATE='), '', $date);
$date = $this->_registry->get('date.time', $date);
$dates_as_strings[] = $date->format('m/d/Y');
}
return $dates_as_strings;
}
/**
* Calculates the timestamp from a DT line.
* @param $line SG_iCal_Line
* @return int
*/
private function getTimestamp(SG_iCal_Line $line, SG_iCal $ical)
{
$ts = strtotime($line->getData());
if (isset($line['tzid'])) {
$tz = $ical->getTimeZoneInfo($line['tzid']);
$offset = $tz->getOffset($ts);
$ts = strtotime(date('D, d M Y H:i:s', $ts) . ' ' . $offset);
}
return $ts;
}
