/usr/share/php/Horde/Date.php is in php-horde-date 2.2.0-1ubuntu1.
This file is owned by root:root, with mode 0o644.
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/**
* Horde Date wrapper/logic class, including some calculation
* functions.
*
* @category Horde
* @package Date
*
* @TODO in format():
* http://php.net/intldateformatter
*
* @TODO on timezones:
* http://trac.agavi.org/ticket/1008
* http://trac.agavi.org/changeset/3659
*
* @TODO on switching to PHP::DateTime:
* The only thing ever stored in the database *IS* Unix timestamps. Doing
* anything other than that is unmanageable, yet some frameworks use 'server
* based' times in their systems, simply because they do not bother with
* daylight saving and only 'serve' one timezone!
*
* The second you have to manage 'real' time across timezones then daylight
* saving becomes essential, BUT only on the display side! Since the browser
* only provides a time offset, this is useless and to be honest should simply
* be ignored ( until it is upgraded to provide the correct information ;)
* ). So we need a 'display' function that takes a simple numeric epoch, and a
* separate timezone id into which the epoch is to be 'converted'. My W3C
* mapping works simply because ADOdb then converts that to it's own simple
* offset abbreviation - in my case GMT or BST. As long as DateTime passes the
* full 64 bit number the date range from 100AD is also preserved ( and
* further back if 2 digit years are disabled ). If I want to display the
* 'real' timezone with this 'time' then I just add it in place of ADOdb's
* 'timezone'. I am tempted to simply adjust the ADOdb class to take a
* timezone in place of the simple GMT switch it currently uses.
*
* The return path is just the reverse and simply needs to take the client
* display offset off prior to storage of the UTC epoch. SO we use
* DateTimeZone to get an offset value for the clients timezone and simply add
* or subtract this from a timezone agnostic display on the client end when
* entering new times.
*
*
* It's not really feasible to store dates in specific timezone, as most
* national/local timezones support DST - and that is a pain to support, as
* eg. sorting breaks when some timestamps get repeated. That's why it's
* usually better to store datetimes as either UTC datetime or plain unix
* timestamp. I usually go with the former - using database datetime type.
*/
/**
* @category Horde
* @package Date
*/
class Horde_Date
{
const DATE_SUNDAY = 0;
const DATE_MONDAY = 1;
const DATE_TUESDAY = 2;
const DATE_WEDNESDAY = 3;
const DATE_THURSDAY = 4;
const DATE_FRIDAY = 5;
const DATE_SATURDAY = 6;
const MASK_SUNDAY = 1;
const MASK_MONDAY = 2;
const MASK_TUESDAY = 4;
const MASK_WEDNESDAY = 8;
const MASK_THURSDAY = 16;
const MASK_FRIDAY = 32;
const MASK_SATURDAY = 64;
const MASK_WEEKDAYS = 62;
const MASK_WEEKEND = 65;
const MASK_ALLDAYS = 127;
const MASK_SECOND = 1;
const MASK_MINUTE = 2;
const MASK_HOUR = 4;
const MASK_DAY = 8;
const MASK_MONTH = 16;
const MASK_YEAR = 32;
const MASK_ALLPARTS = 63;
const DATE_DEFAULT = 'Y-m-d H:i:s';
const DATE_JSON = 'Y-m-d\TH:i:s';
/**
* Year
*
* @var integer
*/
protected $_year;
/**
* Month
*
* @var integer
*/
protected $_month;
/**
* Day
*
* @var integer
*/
protected $_mday;
/**
* Hour
*
* @var integer
*/
protected $_hour = 0;
/**
* Minute
*
* @var integer
*/
protected $_min = 0;
/**
* Second
*
* @var integer
*/
protected $_sec = 0;
/**
* String representation of the date's timezone.
*
* @var string
*/
protected $_timezone;
/**
* These aliases map Windows and Lotus Timezone IDs to those understood by
* PHP.
*
* @todo This list better moves somewhere else
* @var array
*/
protected static $_timezoneAliases = array(
'Dateline Standard Time' => 'Etc/GMT+12',
'UTC-11' => 'Etc/GMT+11',
'Hawaiian Standard Time' => 'Pacific/Honolulu',
'Alaskan Standard Time' => 'America/Anchorage',
'Pacific Standard Time (Mexico)' => 'America/Santa_Isabel',
'Pacific Standard Time' => 'America/Los_Angeles',
'US Mountain Standard Time' => 'America/Phoenix',
'Mountain Standard Time (Mexico)' => 'America/Chihuahua',
'Mountain Standard Time' => 'America/Denver',
'Central America Standard Time' => 'America/Guatemala',
'Central Standard Time' => 'America/Chicago',
'Central Standard Time (Mexico)' => 'America/Mexico_City',
'Canada Central Standard Time' => 'America/Regina',
'SA Pacific Standard Time' => 'America/Bogota',
'Eastern Standard Time' => 'America/New_York',
'US Eastern Standard Time' => 'America/Indianapolis',
'Venezuela Standard Time' => 'America/Caracas',
'Paraguay Standard Time' => 'America/Asuncion',
'Atlantic Standard Time' => 'America/Halifax',
'Central Brazilian Standard Time' => 'America/Cuiaba',
'SA Western Standard Time' => 'America/La_Paz',
'Pacific SA Standard Time' => 'America/Santiago',
'Newfoundland Standard Time' => 'America/St_Johns',
'E. South America Standard Time' => 'America/Sao_Paulo',
'Argentina Standard Time' => 'America/Buenos_Aires',
'SA Eastern Standard Time' => 'America/Cayenne',
'Greenland Standard Time' => 'America/Godthab',
'Montevideo Standard Time' => 'America/Montevideo',
'Bahia Standard Time' => 'America/Bahia',
'UTC-02' => 'Etc/GMT+2',
'Azores Standard Time' => 'Atlantic/Azores',
'Cape Verde Standard Time' => 'Atlantic/Cape_Verde',
'Morocco Standard Time' => 'Africa/Casablanca',
'GMT Standard Time' => 'Europe/London',
'Greenwich Standard Time' => 'Atlantic/Reykjavik',
'W. Europe Standard Time' => 'Europe/Berlin',
'Central Europe Standard Time' => 'Europe/Budapest',
'Romance Standard Time' => 'Europe/Paris',
'Central European Standard Time' => 'Europe/Warsaw',
'W. Central Africa Standard Time' => 'Africa/Lagos',
'Namibia Standard Time' => 'Africa/Windhoek',
'Jordan Standard Time' => 'Asia/Amman',
'GTB Standard Time' => 'Europe/Bucharest',
'Middle East Standard Time' => 'Asia/Beirut',
'Egypt Standard Time' => 'Africa/Cairo',
'Syria Standard Time' => 'Asia/Damascus',
'E. Europe Standard Time' => 'Asia/Nicosia',
'South Africa Standard Time' => 'Africa/Johannesburg',
'FLE Standard Time' => 'Europe/Kiev',
'Turkey Standard Time' => 'Europe/Istanbul',
'Israel Standard Time' => 'Asia/Jerusalem',
'Arabic Standard Time' => 'Asia/Baghdad',
'Kaliningrad Standard Time' => 'Europe/Kaliningrad',
'Arab Standard Time' => 'Asia/Riyadh',
'E. Africa Standard Time' => 'Africa/Nairobi',
'Iran Standard Time' => 'Asia/Tehran',
'Arabian Standard Time' => 'Asia/Dubai',
'Azerbaijan Standard Time' => 'Asia/Baku',
'Russian Standard Time' => 'Europe/Moscow',
'Mauritius Standard Time' => 'Indian/Mauritius',
'Georgian Standard Time' => 'Asia/Tbilisi',
'Caucasus Standard Time' => 'Asia/Yerevan',
'Afghanistan Standard Time' => 'Asia/Kabul',
'Pakistan Standard Time' => 'Asia/Karachi',
'West Asia Standard Time' => 'Asia/Tashkent',
'India Standard Time' => 'Asia/Calcutta',
'Sri Lanka Standard Time' => 'Asia/Colombo',
'Nepal Standard Time' => 'Asia/Katmandu',
'Central Asia Standard Time' => 'Asia/Almaty',
'Bangladesh Standard Time' => 'Asia/Dhaka',
'Ekaterinburg Standard Time' => 'Asia/Yekaterinburg',
'Myanmar Standard Time' => 'Asia/Rangoon',
'SE Asia Standard Time' => 'Asia/Bangkok',
'N. Central Asia Standard Time' => 'Asia/Novosibirsk',
'China Standard Time' => 'Asia/Shanghai',
'North Asia Standard Time' => 'Asia/Krasnoyarsk',
'Singapore Standard Time' => 'Asia/Singapore',
'W. Australia Standard Time' => 'Australia/Perth',
'Taipei Standard Time' => 'Asia/Taipei',
'Ulaanbaatar Standard Time' => 'Asia/Ulaanbaatar',
'North Asia East Standard Time' => 'Asia/Irkutsk',
'Tokyo Standard Time' => 'Asia/Tokyo',
'Korea Standard Time' => 'Asia/Seoul',
'Cen. Australia Standard Time' => 'Australia/Adelaide',
'AUS Central Standard Time' => 'Australia/Darwin',
'E. Australia Standard Time' => 'Australia/Brisbane',
'AUS Eastern Standard Time' => 'Australia/Sydney',
'West Pacific Standard Time' => 'Pacific/Port_Moresby',
'Tasmania Standard Time' => 'Australia/Hobart',
'Yakutsk Standard Time' => 'Asia/Yakutsk',
'Central Pacific Standard Time' => 'Pacific/Guadalcanal',
'Vladivostok Standard Time' => 'Asia/Vladivostok',
'New Zealand Standard Time' => 'Pacific/Auckland',
'UTC+12' => 'Etc/GMT-12',
'Fiji Standard Time' => 'Pacific/Fiji',
'Magadan Standard Time' => 'Asia/Magadan',
'Tonga Standard Time' => 'Pacific/Tongatapu',
'Samoa Standard Time' => 'Pacific/Apia',
// Found from Lotus Notes
'W. Europe' => 'Europe/Berlin',
'E. Europe' => 'Asia/Nicosia',
);
/**
* Default format for __toString()
*
* @var string
*/
protected $_defaultFormat = self::DATE_DEFAULT;
/**
* Default specs that are always supported.
* @var string
*/
protected static $_defaultSpecs = '-%CdDeHImMnRStTyY';
/**
* Internally supported strftime() specifiers.
* @var string
*/
protected static $_supportedSpecs = '';
/**
* Map of required correction masks.
*
* @see __set()
*
* @var array
*/
protected static $_corrections = array(
'year' => self::MASK_YEAR,
'month' => self::MASK_MONTH,
'mday' => self::MASK_DAY,
'hour' => self::MASK_HOUR,
'min' => self::MASK_MINUTE,
'sec' => self::MASK_SECOND,
);
protected $_formatCache = array();
/**
* Builds a new date object. If $date contains date parts, use them to
* initialize the object.
*
* Recognized formats:
* - arrays with keys 'year', 'month', 'mday', 'day'
* 'hour', 'min', 'minute', 'sec'
* - objects with properties 'year', 'month', 'mday', 'hour', 'min', 'sec'
* - yyyy-mm-dd hh:mm:ss
* - yyyymmddhhmmss
* - yyyymmddThhmmssZ
* - yyyymmdd (might conflict with unix timestamps between 31 Oct 1966 and
* 03 Mar 1973)
* - unix timestamps
* - anything parsed by strtotime()/DateTime.
*
* @throws Horde_Date_Exception
*/
public function __construct($date = null, $timezone = null)
{
if (!self::$_supportedSpecs) {
self::$_supportedSpecs = self::$_defaultSpecs;
if (function_exists('nl_langinfo')) {
self::$_supportedSpecs .= 'bBpxX';
}
}
if (func_num_args() > 2) {
// Handle args in order: year month day hour min sec tz
$this->_initializeFromArgs(func_get_args());
return;
}
$this->_initializeTimezone($timezone);
if (is_null($date)) {
return;
}
if (is_string($date)) {
$date = trim($date, '"');
}
if (is_object($date)) {
$this->_initializeFromObject($date);
} elseif (is_array($date)) {
$this->_initializeFromArray($date);
} elseif (preg_match('/^(\d{4})-?(\d{2})-?(\d{2})T? ?(\d{2}):?(\d{2}):?(\d{2})(?:\.\d+)?(Z?)$/', $date, $parts)) {
$this->_year = (int)$parts[1];
$this->_month = (int)$parts[2];
$this->_mday = (int)$parts[3];
$this->_hour = (int)$parts[4];
$this->_min = (int)$parts[5];
$this->_sec = (int)$parts[6];
if ($parts[7]) {
$this->_initializeTimezone('UTC');
}
} elseif (preg_match('/^(\d{4})-?(\d{2})-?(\d{2})$/', $date, $parts) &&
$parts[2] > 0 && $parts[2] <= 12 &&
$parts[3] > 0 && $parts[3] <= 31) {
$this->_year = (int)$parts[1];
$this->_month = (int)$parts[2];
$this->_mday = (int)$parts[3];
$this->_hour = $this->_min = $this->_sec = 0;
} elseif ((string)(int)$date == $date) {
// Try as a timestamp.
if ($this->_timezone) {
$oldtimezone = date_default_timezone_get();
date_default_timezone_set($this->_timezone);
}
$parts = @getdate($date);
if ($parts) {
$this->_year = $parts['year'];
$this->_month = $parts['mon'];
$this->_mday = $parts['mday'];
$this->_hour = $parts['hours'];
$this->_min = $parts['minutes'];
$this->_sec = $parts['seconds'];
}
if ($this->_timezone) {
date_default_timezone_set($oldtimezone);
}
} else {
if (!empty($timezone)) {
try {
$parsed = new DateTime($date, new DateTimeZone($timezone));
} catch (Exception $e) {
throw new Horde_Date_Exception(sprintf(Horde_Date_Translation::t("Failed to parse time string (%s)"), $date));
}
} else {
try {
$parsed = new DateTime($date);
} catch (Exception $e) {
throw new Horde_Date_Exception(sprintf(Horde_Date_Translation::t("Failed to parse time string (%s)"), $date));
}
$parsed->setTimezone(new DateTimeZone(date_default_timezone_get()));
$this->_initializeTimezone(date_default_timezone_get());
}
$this->_year = (int)$parsed->format('Y');
$this->_month = (int)$parsed->format('m');
$this->_mday = (int)$parsed->format('d');
$this->_hour = (int)$parsed->format('H');
$this->_min = (int)$parsed->format('i');
$this->_sec = (int)$parsed->format('s');
}
}
/**
* Returns a simple string representation of the date object
*
* @return string This object converted to a string.
*/
public function __toString()
{
try {
return $this->format($this->_defaultFormat);
} catch (Exception $e) {
return '';
}
}
/**
* Returns a DateTime object representing this object.
*
* @return DateTime
*/
public function toDateTime()
{
try {
$date = new DateTime(null, new DateTimeZone($this->_timezone));
$date->setDate($this->_year, $this->_month, $this->_mday);
$date->setTime($this->_hour, $this->_min, $this->_sec);
} catch (Exception $e) {
throw new Horde_Date_Exception($e);
}
return $date;
}
/**
* Converts a date in the proleptic Gregorian calendar to the no of days
* since 24th November, 4714 B.C.
*
* Returns the no of days since Monday, 24th November, 4714 B.C. in the
* proleptic Gregorian calendar (which is 24th November, -4713 using
* 'Astronomical' year numbering, and 1st January, 4713 B.C. in the
* proleptic Julian calendar). This is also the first day of the 'Julian
* Period' proposed by Joseph Scaliger in 1583, and the number of days
* since this date is known as the 'Julian Day'. (It is not directly
* to do with the Julian calendar, although this is where the name
* is derived from.)
*
* The algorithm is valid for all years (positive and negative), and
* also for years preceding 4714 B.C.
*
* Algorithm is from PEAR::Date_Calc
*
* @author Monte Ohrt <monte@ispi.net>
* @author Pierre-Alain Joye <pajoye@php.net>
* @author Daniel Convissor <danielc@php.net>
* @author C.A. Woodcock <c01234@netcomuk.co.uk>
*
* @return integer The number of days since 24th November, 4714 B.C.
*/
public function toDays()
{
if (function_exists('GregorianToJD')) {
return gregoriantojd($this->_month, $this->_mday, $this->_year);
}
$day = $this->_mday;
$month = $this->_month;
$year = $this->_year;
if ($month > 2) {
// March = 0, April = 1, ..., December = 9,
// January = 10, February = 11
$month -= 3;
} else {
$month += 9;
--$year;
}
$hb_negativeyear = $year < 0;
$century = intval($year / 100);
$year = $year % 100;
if ($hb_negativeyear) {
// Subtract 1 because year 0 is a leap year;
// And N.B. that we must treat the leap years as occurring
// one year earlier than they do, because for the purposes
// of calculation, the year starts on 1st March:
//
return intval((14609700 * $century + ($year == 0 ? 1 : 0)) / 400) +
intval((1461 * $year + 1) / 4) +
intval((153 * $month + 2) / 5) +
$day + 1721118;
} else {
return intval(146097 * $century / 4) +
intval(1461 * $year / 4) +
intval((153 * $month + 2) / 5) +
$day + 1721119;
}
}
/**
* Converts number of days since 24th November, 4714 B.C. (in the proleptic
* Gregorian calendar, which is year -4713 using 'Astronomical' year
* numbering) to Gregorian calendar date.
*
* Returned date belongs to the proleptic Gregorian calendar, using
* 'Astronomical' year numbering.
*
* The algorithm is valid for all years (positive and negative), and
* also for years preceding 4714 B.C. (i.e. for negative 'Julian Days'),
* and so the only limitation is platform-dependent (for 32-bit systems
* the maximum year would be something like about 1,465,190 A.D.).
*
* N.B. Monday, 24th November, 4714 B.C. is Julian Day '0'.
*
* Algorithm is from PEAR::Date_Calc
*
* @author Monte Ohrt <monte@ispi.net>
* @author Pierre-Alain Joye <pajoye@php.net>
* @author Daniel Convissor <danielc@php.net>
* @author C.A. Woodcock <c01234@netcomuk.co.uk>
*
* @param int $days the number of days since 24th November, 4714 B.C.
* @param string $format the string indicating how to format the output
*
* @return Horde_Date A Horde_Date object representing the date.
*/
public static function fromDays($days)
{
if (function_exists('jdtogregorian')) {
list($month, $day, $year) = explode('/', jdtogregorian($days));
} else {
$days = intval($days);
$days -= 1721119;
$century = floor((4 * $days - 1) / 146097);
$days = floor(4 * $days - 1 - 146097 * $century);
$day = floor($days / 4);
$year = floor((4 * $day + 3) / 1461);
$day = floor(4 * $day + 3 - 1461 * $year);
$day = floor(($day + 4) / 4);
$month = floor((5 * $day - 3) / 153);
$day = floor(5 * $day - 3 - 153 * $month);
$day = floor(($day + 5) / 5);
$year = $century * 100 + $year;
if ($month < 10) {
$month +=3;
} else {
$month -=9;
++$year;
}
}
return new Horde_Date($year, $month, $day);
}
/**
* Getter for the date and time properties.
*
* @param string $name One of 'year', 'month', 'mday', 'hour', 'min',
* 'sec' or 'timezone' (since Horde_Date 2.0.0).
*
* @return integer|string The property value, or null if not set.
*/
public function __get($name)
{
if ($name == 'day') {
$name = 'mday';
}
if ($name[0] == '_') {
return null;
}
return $this->{'_' . $name};
}
/**
* Setter for the date and time properties.
*
* @param string $name One of 'year', 'month', 'mday', 'hour',
* 'min', 'sec' or 'timezone' (since
* Horde_Date 2.0.0).
* @param integer|string $value The property value.
*/
public function __set($name, $value)
{
if ($name == 'timezone') {
$this->_initializeTimezone($value);
return;
}
if ($name == 'day') {
$name = 'mday';
}
if ($name != 'year' && $name != 'month' && $name != 'mday' &&
$name != 'hour' && $name != 'min' && $name != 'sec') {
throw new InvalidArgumentException('Undefined property ' . $name);
}
$down = $value < $this->{'_' . $name};
$this->{'_' . $name} = $value;
$this->_correct(self::$_corrections[$name], $down);
$this->_formatCache = array();
}
/**
* Returns whether a date or time property exists.
*
* @param string $name One of 'year', 'month', 'mday', 'hour', 'min' or
* 'sec'.
*
* @return boolen True if the property exists and is set.
*/
public function __isset($name)
{
if ($name == 'day') {
$name = 'mday';
}
return ($name == 'year' || $name == 'month' || $name == 'mday' ||
$name == 'hour' || $name == 'min' || $name == 'sec') &&
isset($this->{'_' . $name});
}
/**
* Adds a number of seconds or units to this date, returning a new Date
* object.
*/
public function add($factor)
{
$d = clone($this);
if (is_array($factor) || is_object($factor)) {
foreach ($factor as $property => $value) {
$d->$property += $value;
}
} else {
$d->sec += $factor;
}
return $d;
}
/**
* Subtracts a number of seconds or units from this date, returning a new
* Horde_Date object.
*/
public function sub($factor)
{
if (is_array($factor)) {
foreach ($factor as &$value) {
$value *= -1;
}
} else {
$factor *= -1;
}
return $this->add($factor);
}
/**
* Converts this object to a different timezone.
*
* @param string $timezone The new timezone.
*
* @return Horde_Date This object.
*/
public function setTimezone($timezone)
{
$date = $this->toDateTime();
/* Workaround for standard cases of bug #11688 */
if (array_key_exists($timezone, self::$_timezoneAliases)) {
$timezone = self::$_timezoneAliases[$timezone];
}
$date->setTimezone(new DateTimeZone($timezone));
$this->_timezone = $timezone;
$this->_year = (int)$date->format('Y');
$this->_month = (int)$date->format('m');
$this->_mday = (int)$date->format('d');
$this->_hour = (int)$date->format('H');
$this->_min = (int)$date->format('i');
$this->_sec = (int)$date->format('s');
$this->_formatCache = array();
return $this;
}
/**
* Sets the default date format used in __toString()
*
* @param string $format
*/
public function setDefaultFormat($format)
{
$this->_defaultFormat = $format;
}
/**
* Returns the day of the week (0 = Sunday, 6 = Saturday) of this date.
*
* @return integer The day of the week.
*/
public function dayOfWeek()
{
if ($this->_month > 2) {
$month = $this->_month - 2;
$year = $this->_year;
} else {
$month = $this->_month + 10;
$year = $this->_year - 1;
}
$day = (floor((13 * $month - 1) / 5) +
$this->_mday + ($year % 100) +
floor(($year % 100) / 4) +
floor(($year / 100) / 4) - 2 *
floor($year / 100) + 77);
return (int)($day - 7 * floor($day / 7));
}
/**
* Returns the day number of the year (1 to 365/366).
*
* @return integer The day of the year.
*/
public function dayOfYear()
{
return $this->format('z') + 1;
}
/**
* Returns the week of the month.
*
* @return integer The week number.
*/
public function weekOfMonth()
{
return ceil($this->_mday / 7);
}
/**
* Returns the week of the year, first Monday is first day of first week.
*
* @return integer The week number.
*/
public function weekOfYear()
{
return $this->format('W');
}
/**
* Returns the number of weeks in the given year (52 or 53).
*
* @param integer $year The year to count the number of weeks in.
*
* @return integer $numWeeks The number of weeks in $year.
*/
public static function weeksInYear($year)
{
// Find the last Thursday of the year.
$date = new Horde_Date($year . '-12-31');
while ($date->dayOfWeek() != self::DATE_THURSDAY) {
--$date->mday;
}
return $date->weekOfYear();
}
/**
* Sets the date of this object to the $nth weekday of $weekday.
*
* @param integer $weekday The day of the week (0 = Sunday, etc).
* @param integer $nth The $nth $weekday to set to (defaults to 1).
* Negative values count from end of the month
* (@since Horde_Date 2.1.0).
*/
public function setNthWeekday($weekday, $nth = 1)
{
if ($weekday < self::DATE_SUNDAY || $weekday > self::DATE_SATURDAY) {
return;
}
if ($nth >= 0) {
$this->_mday = 1;
$first = $this->dayOfWeek();
$this->_mday = $weekday - $first + 1;
if ($weekday < $first) {
$this->_mday += 7;
}
$diff = 7 * $nth - 7;
$this->_mday += $diff;
$this->_correct(self::MASK_DAY, false);
} else {
$this->_mday = Horde_Date_Utils::daysInMonth($this->_month, $this->_year);
$last = $this->dayOfWeek();
$this->_mday -= $last - $weekday;
if ($last < $weekday) {
$this->_mday -= 7;
}
$diff = -7 * $nth - 7;
$this->_mday -= $diff;
$this->_correct(self::MASK_DAY, true);
$this->_formatCache = array();
}
}
/**
* Is the date currently represented by this object a valid date?
*
* @return boolean Validity, counting leap years, etc.
*/
public function isValid()
{
return ($this->_year >= 0 && $this->_year <= 9999);
}
/**
* Compares this date to another date object to see which one is
* greater (later). Assumes that the dates are in the same
* timezone.
*
* @param mixed $other The date to compare to.
*
* @return integer == 0 if they are on the same date
* >= 1 if $this is greater (later)
* <= -1 if $other is greater (later)
*/
public function compareDate($other)
{
if (!($other instanceof Horde_Date)) {
$other = new Horde_Date($other);
}
if ($this->_year != $other->year) {
return $this->_year - $other->year;
}
if ($this->_month != $other->month) {
return $this->_month - $other->month;
}
return $this->_mday - $other->mday;
}
/**
* Returns whether this date is after the other.
*
* @param mixed $other The date to compare to.
*
* @return boolean True if this date is after the other.
*/
public function after($other)
{
return $this->compareDate($other) > 0;
}
/**
* Returns whether this date is before the other.
*
* @param mixed $other The date to compare to.
*
* @return boolean True if this date is before the other.
*/
public function before($other)
{
return $this->compareDate($other) < 0;
}
/**
* Returns whether this date is the same like the other.
*
* @param mixed $other The date to compare to.
*
* @return boolean True if this date is the same like the other.
*/
public function equals($other)
{
return $this->compareDate($other) == 0;
}
/**
* Compares this to another date object by time, to see which one
* is greater (later). Assumes that the dates are in the same
* timezone.
*
* @param mixed $other The date to compare to.
*
* @return integer == 0 if they are at the same time
* >= 1 if $this is greater (later)
* <= -1 if $other is greater (later)
*/
public function compareTime($other)
{
if (!($other instanceof Horde_Date)) {
$other = new Horde_Date($other);
}
if ($this->_hour != $other->hour) {
return $this->_hour - $other->hour;
}
if ($this->_min != $other->min) {
return $this->_min - $other->min;
}
return $this->_sec - $other->sec;
}
/**
* Compares this to another date object, including times, to see
* which one is greater (later). Assumes that the dates are in the
* same timezone.
*
* @param mixed $other The date to compare to.
*
* @return integer == 0 if they are equal
* >= 1 if $this is greater (later)
* <= -1 if $other is greater (later)
*/
public function compareDateTime($other)
{
if (!($other instanceof Horde_Date)) {
$other = new Horde_Date($other);
}
if ($diff = $this->compareDate($other)) {
return $diff;
}
return $this->compareTime($other);
}
/**
* Returns number of days between this date and another.
*
* @param Horde_Date $other The other day to diff with.
*
* @return integer The absolute number of days between the two dates.
*/
public function diff($other)
{
return abs($this->toDays() - $other->toDays());
}
/**
* Returns the time offset for local time zone.
*
* @param boolean $colon Place a colon between hours and minutes?
*
* @return string Timezone offset as a string in the format +HH:MM.
*/
public function tzOffset($colon = true)
{
return $colon ? $this->format('P') : $this->format('O');
}
/**
* Returns the unix timestamp representation of this date.
*
* @return integer A unix timestamp.
*/
public function timestamp()
{
if ($this->_year >= 1970 && $this->_year < 2038) {
return mktime($this->_hour, $this->_min, $this->_sec,
$this->_month, $this->_mday, $this->_year);
}
return $this->format('U');
}
/**
* Returns the unix timestamp representation of this date, 12:00am.
*
* @return integer A unix timestamp.
*/
public function datestamp()
{
if ($this->_year >= 1970 && $this->_year < 2038) {
return mktime(0, 0, 0, $this->_month, $this->_mday, $this->_year);
}
$date = new DateTime($this->format('Y-m-d'));
return $date->format('U');
}
/**
* Formats date and time to be passed around as a short url parameter.
*
* @return string Date and time.
*/
public function dateString()
{
return sprintf('%04d%02d%02d', $this->_year, $this->_month, $this->_mday);
}
/**
* Formats date and time to the ISO format used by JSON.
*
* @return string Date and time.
*/
public function toJson()
{
return $this->format(self::DATE_JSON);
}
/**
* Formats date and time to the RFC 2445 iCalendar DATE-TIME format.
*
* @param boolean $floating Whether to return a floating date-time
* (without time zone information).
*
* @return string Date and time.
*/
public function toiCalendar($floating = false)
{
if ($floating) {
return $this->format('Ymd\THis');
}
$dateTime = $this->toDateTime();
$dateTime->setTimezone(new DateTimeZone('UTC'));
return $dateTime->format('Ymd\THis\Z');
}
/**
* Formats time using the specifiers available in date() or in the DateTime
* class' format() method.
*
* To format in languages other than English, use strftime() instead.
*
* @param string $format
*
* @return string Formatted time.
*/
public function format($format)
{
if (!isset($this->_formatCache[$format])) {
$this->_formatCache[$format] = $this->toDateTime()->format($format);
}
return $this->_formatCache[$format];
}
/**
* Formats date and time using strftime() format.
*
* @return string strftime() formatted date and time.
*/
public function strftime($format)
{
if (preg_match('/%[^' . self::$_supportedSpecs . ']/', $format)) {
return strftime($format, $this->timestamp());
} else {
return $this->_strftime($format);
}
}
/**
* Callback used to replace a strtime pattern
*
* @param array $matches preg_replace_callback() matches.
*
* @return string Replacement string.
*/
protected function _regexCallback($reg)
{
switch ($reg[0]) {
case '%b': return $this->strftime(Horde_Nls::getLangInfo(constant('ABMON_' . (int)$this->_month)));
case '%B': return $this->strftime(Horde_Nls::getLangInfo(constant('MON_' . (int)$this->_month)));
case '%C': return (int)($this->_year / 100);
case '%-d':
case '%#d': return sprintf('%d', $this->_mday);
case '%d': return sprintf('%02d', $this->_mday);
case '%D': return $this->strftime('%m/%d/%y');
case '%e': return sprintf('%2d', $this->_mday);
case '%-H':
case '%#H': return sprintf('%d', $this->_hour);
case '%H': return sprintf('%02d', $this->_hour);
case '%-I':
case '%#I': return sprintf('%d', $this->_hour == 0 ? 12 : ($this->_hour > 12 ? $this->_hour - 12 : $this->_hour));
case '%I': return sprintf('%02d', $this->_hour == 0 ? 12 : ($this->_hour > 12 ? $this->_hour - 12 : $this->_hour));
case '%-m':
case '%#m': return sprintf('%d', $this->_month);
case '%m': return sprintf('%02d', $this->_month);
case '%-M':
case '%#M': return sprintf('%d', $this->_min);
case '%M': return sprintf('%02d', $this->_min);
case '%n': return "\n";
case '%p': return $this->strftime(Horde_Nls::getLangInfo($this->_hour < 12 ? AM_STR : PM_STR));
case '%R': return $this->strftime('%H:%M');
case '%-S':
case '%#S': return sprintf('%d', $this->_sec);
case '%S': return sprintf('%02d', $this->_sec);
case '%t': return "\t";
case '%T': return $this->strftime('%H:%M:%S');
case '%x': return $this->strftime(Horde_Nls::getLangInfo(D_FMT));
case '%X': return $this->strftime(Horde_Nls::getLangInfo(T_FMT));
case '%y': return substr(sprintf('%04d', $this->_year), -2);
case '%Y': return (int)$this->_year;
case '%%': return '%';
}
return $reg[0];
}
/**
* Formats date and time using a limited set of the strftime() format.
*
* @return string strftime() formatted date and time.
*/
protected function _strftime($format)
{
return preg_replace_callback('/(%([-#]?)[%bBCdDeHImMnpRStTxXyY])/', array($this, '_regexCallback'), $format);
}
/**
* Corrects any over- or underflows in any of the date's members.
*
* @param integer $mask We may not want to correct some overflows.
* @param integer $down Whether to correct the date up or down.
*/
protected function _correct($mask = self::MASK_ALLPARTS, $down = false)
{
if ($mask & self::MASK_SECOND) {
if ($this->_sec < 0 || $this->_sec > 59) {
$mask |= self::MASK_MINUTE;
$this->_min += (int)($this->_sec / 60);
$this->_sec %= 60;
if ($this->_sec < 0) {
$this->_min--;
$this->_sec += 60;
}
}
}
if ($mask & self::MASK_MINUTE) {
if ($this->_min < 0 || $this->_min > 59) {
$mask |= self::MASK_HOUR;
$this->_hour += (int)($this->_min / 60);
$this->_min %= 60;
if ($this->_min < 0) {
$this->_hour--;
$this->_min += 60;
}
}
}
if ($mask & self::MASK_HOUR) {
if ($this->_hour < 0 || $this->_hour > 23) {
$mask |= self::MASK_DAY;
$this->_mday += (int)($this->_hour / 24);
$this->_hour %= 24;
if ($this->_hour < 0) {
$this->_mday--;
$this->_hour += 24;
}
}
}
if ($mask & self::MASK_MONTH) {
$this->_correctMonth();
/* When correcting the month, always correct the day too. Months
* have different numbers of days. */
if (isset($this->_mday)) {
$mask |= self::MASK_DAY;
}
}
if ($mask & self::MASK_DAY) {
while ($this->_mday > (366 + 31)) {
if ((Horde_Date_Utils::isLeapYear($this->_year) &&
($this->_month <= 2)) ||
(Horde_Date_Utils::isLeapYear($this->_year + 1) &&
($this->_month > 2))) {
$this->_mday -= 366;
} else {
$this->_mday -= 365;
}
$this->_year++;
}
while ($this->_mday > 28 &&
$this->_mday > Horde_Date_Utils::daysInMonth($this->_month, $this->_year)) {
if ($down) {
$this->_mday -= Horde_Date_Utils::daysInMonth($this->_month + 1, $this->_year) - Horde_Date_Utils::daysInMonth($this->_month, $this->_year);
} else {
$this->_mday -= Horde_Date_Utils::daysInMonth($this->_month, $this->_year);
$this->_month++;
}
$this->_correctMonth();
}
while ($this->_mday < 1) {
--$this->_month;
$this->_correctMonth();
$this->_mday += Horde_Date_Utils::daysInMonth($this->_month, $this->_year);
}
}
}
/**
* Corrects the current month.
*
* This cannot be done in _correct() because that would also trigger a
* correction of the day, which would result in an infinite loop.
*/
protected function _correctMonth()
{
$this->_year += (int)($this->_month / 12);
$this->_month %= 12;
if ($this->_month < 1) {
$this->_year--;
$this->_month += 12;
}
}
/**
* Handles args in order: year month day hour min sec tz
*/
protected function _initializeFromArgs($args)
{
$tz = (isset($args[6])) ? array_pop($args) : null;
$this->_initializeTimezone($tz);
$args = array_slice($args, 0, 6);
$keys = array('year' => 1, 'month' => 1, 'mday' => 1, 'hour' => 0, 'min' => 0, 'sec' => 0);
$date = array_combine(array_slice(array_keys($keys), 0, count($args)), $args);
$date = array_merge($keys, $date);
$this->_initializeFromArray($date);
}
protected function _initializeFromArray($date)
{
if (isset($date['year']) && is_string($date['year']) && strlen($date['year']) == 2) {
if ($date['year'] > 70) {
$date['year'] += 1900;
} else {
$date['year'] += 2000;
}
}
foreach ($date as $key => $val) {
if (in_array($key, array('year', 'month', 'mday', 'hour', 'min', 'sec'))) {
$this->{'_'. $key} = (int)$val;
}
}
// If $date['day'] is present and numeric we may have been passed
// a Horde_Form_datetime array.
if (isset($date['day']) &&
(string)(int)$date['day'] == $date['day']) {
$this->_mday = (int)$date['day'];
}
// 'minute' key also from Horde_Form_datetime
if (isset($date['minute']) &&
(string)(int)$date['minute'] == $date['minute']) {
$this->_min = (int)$date['minute'];
}
$this->_correct();
}
protected function _initializeFromObject($date)
{
if ($date instanceof DateTime) {
$this->_year = (int)$date->format('Y');
$this->_month = (int)$date->format('m');
$this->_mday = (int)$date->format('d');
$this->_hour = (int)$date->format('H');
$this->_min = (int)$date->format('i');
$this->_sec = (int)$date->format('s');
$this->_initializeTimezone($date->getTimezone()->getName());
} else {
$is_horde_date = $date instanceof Horde_Date;
foreach (array('year', 'month', 'mday', 'hour', 'min', 'sec') as $key) {
if ($is_horde_date || isset($date->$key)) {
$this->{'_' . $key} = (int)$date->$key;
}
}
if (!$is_horde_date) {
$this->_correct();
} else {
$this->_initializeTimezone($date->timezone);
}
}
}
protected function _initializeTimezone($timezone)
{
if (empty($timezone)) {
$timezone = date_default_timezone_get();
} elseif (array_key_exists($timezone, self::$_timezoneAliases)) {
/* Workaround for standard cases of bug #11688 */
$timezone = self::$_timezoneAliases[$timezone];
}
$this->_timezone = $timezone;
}
}
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