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PhutilCalendarAbsoluteDateTime.php
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Mon, May 13, 07:26

PhutilCalendarAbsoluteDateTime.php
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<?php
final class PhutilCalendarAbsoluteDateTime
extends PhutilCalendarDateTime {
private $year;
private $month;
private $day;
private $hour = 0;
private $minute = 0;
private $second = 0;
private $timezone;
public static function newFromISO8601($value, $timezone = 'UTC') {
$pattern =
'/^'.
'(?P<y>\d{4})(?P<m>\d{2})(?P<d>\d{2})'.
'(?:'.
'T(?P<h>\d{2})(?P<i>\d{2})(?P<s>\d{2})(?<z>Z)?'.
')?'.
'\z/';
$matches = null;
$ok = preg_match($pattern, $value, $matches);
if (!$ok) {
throw new Exception(
pht(
'Expected ISO8601 datetime in the format "19990105T112233Z", '.
'found "%s".',
$value));
}
if (isset($matches['z'])) {
if ($timezone != 'UTC') {
throw new Exception(
pht(
'ISO8601 date ends in "Z" indicating UTC, but a timezone other '.
'than UTC ("%s") was specified.',
$timezone));
}
}
$datetime = id(new self())
->setYear((int)$matches['y'])
->setMonth((int)$matches['m'])
->setDay((int)$matches['d'])
->setTimezone($timezone);
if (isset($matches['h'])) {
$datetime
->setHour((int)$matches['h'])
->setMinute((int)$matches['i'])
->setSecond((int)$matches['s']);
} else {
$datetime
->setIsAllDay(true);
}
return $datetime;
}
public static function newFromEpoch($epoch, $timezone = 'UTC') {
$date = new DateTime('@'.$epoch);
$zone = new DateTimeZone($timezone);
$date->setTimezone($zone);
return id(new self())
->setYear((int)$date->format('Y'))
->setMonth((int)$date->format('m'))
->setDay((int)$date->format('d'))
->setHour((int)$date->format('H'))
->setMinute((int)$date->format('i'))
->setSecond((int)$date->format('s'))
->setTimezone($timezone);
}
public static function newFromDictionary(array $dict) {
static $keys;
if ($keys === null) {
$keys = array_fuse(
array(
'kind',
'year',
'month',
'day',
'hour',
'minute',
'second',
'timezone',
'isAllDay',
));
}
foreach ($dict as $key => $value) {
if (!isset($keys[$key])) {
throw new Exception(
pht(
'Unexpected key "%s" in datetime dictionary, expected keys: %s.',
$key,
implode(', ', array_keys($keys))));
}
}
if (idx($dict, 'kind') !== 'absolute') {
throw new Exception(
pht(
'Expected key "%s" with value "%s" in datetime dictionary.',
'kind',
'absolute'));
}
if (!isset($dict['year'])) {
throw new Exception(
pht(
'Expected key "%s" in datetime dictionary.',
'year'));
}
$datetime = id(new self())
->setYear(idx($dict, 'year'))
->setMonth(idx($dict, 'month', 1))
->setDay(idx($dict, 'day', 1))
->setHour(idx($dict, 'hour', 0))
->setMinute(idx($dict, 'minute', 0))
->setSecond(idx($dict, 'second', 0))
->setTimezone(idx($dict, 'timezone'))
->setIsAllDay((bool)idx($dict, 'isAllDay', false));
return $datetime;
}
public function newRelativeDateTime($duration) {
if (is_string($duration)) {
$duration = PhutilCalendarDuration::newFromISO8601($duration);
}
if (!($duration instanceof PhutilCalendarDuration)) {
throw new Exception(
pht(
'Expected "PhutilCalendarDuration" object or ISO8601 duration '.
'string.'));
}
return id(new PhutilCalendarRelativeDateTime())
->setOrigin($this)
->setDuration($duration);
}
public function toDictionary() {
return array(
'kind' => 'absolute',
'year' => (int)$this->getYear(),
'month' => (int)$this->getMonth(),
'day' => (int)$this->getDay(),
'hour' => (int)$this->getHour(),
'minute' => (int)$this->getMinute(),
'second' => (int)$this->getSecond(),
'timezone' => $this->getTimezone(),
'isAllDay' => (bool)$this->getIsAllDay(),
);
}
public function setYear($year) {
$this->year = $year;
return $this;
}
public function getYear() {
return $this->year;
}
public function setMonth($month) {
$this->month = $month;
return $this;
}
public function getMonth() {
return $this->month;
}
public function setDay($day) {
$this->day = $day;
return $this;
}
public function getDay() {
return $this->day;
}
public function setHour($hour) {
$this->hour = $hour;
return $this;
}
public function getHour() {
return $this->hour;
}
public function setMinute($minute) {
$this->minute = $minute;
return $this;
}
public function getMinute() {
return $this->minute;
}
public function setSecond($second) {
$this->second = $second;
return $this;
}
public function getSecond() {
return $this->second;
}
public function setTimezone($timezone) {
$this->timezone = $timezone;
return $this;
}
public function getTimezone() {
return $this->timezone;
}
private function getEffectiveTimezone() {
$date_timezone = $this->getTimezone();
$viewer_timezone = $this->getViewerTimezone();
// Because all-day events are always "floating", the effective timezone
// is the viewer timezone if it is available. Otherwise, we'll return a
// DateTime object with the correct values, but it will be incorrectly
// adjusted forward or backward to the viewer's zone later.
$zones = array();
if ($this->getIsAllDay()) {
$zones[] = $viewer_timezone;
$zones[] = $date_timezone;
} else {
$zones[] = $date_timezone;
$zones[] = $viewer_timezone;
}
$zones = array_filter($zones);
if (!$zones) {
throw new Exception(
pht(
'Datetime has no timezone or viewer timezone.'));
}
return head($zones);
}
public function newPHPDateTimeZone() {
$zone = $this->getEffectiveTimezone();
return new DateTimeZone($zone);
}
public function newPHPDateTime() {
$zone = $this->newPHPDateTimeZone();
$y = $this->getYear();
$m = $this->getMonth();
$d = $this->getDay();
if ($this->getIsAllDay()) {
$h = 0;
$i = 0;
$s = 0;
} else {
$h = $this->getHour();
$i = $this->getMinute();
$s = $this->getSecond();
}
$format = sprintf('%04d-%02d-%02d %02d:%02d:%02d', $y, $m, $d, $h, $i, $s);
return new DateTime($format, $zone);
}
public function newAbsoluteDateTime() {
return clone $this;
}
}

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