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<?php
/**
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
* @copyright Copyright (c) Brian Nesbitt <brian@nesbot.com>
* @link http://cakephp.org CakePHP(tm) Project
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Chronos;
use DateInterval;
use InvalidArgumentException;
/**
* A simple API extension for DateInterval.
* The implementation provides helpers to handle weeks but only days are saved.
* Weeks are calculated based on the total days of the current instance.
*
* @property int $years Total years of the current interval.
* @property int $months Total months of the current interval.
* @property int $weeks Total weeks of the current interval calculated from the days.
* @property int $dayz Total days of the current interval (weeks * 7 + days).
* @property int $hours Total hours of the current interval.
* @property int $minutes Total minutes of the current interval.
* @property int $seconds Total seconds of the current interval.
*
* @property-read int $dayzExcludeWeeks Total days remaining in the final week of the current instance (days % 7).
* @property-read int $daysExcludeWeeks alias of dayzExcludeWeeks
*
* @method static ChronosInterval years($years = 1) Create instance specifying a number of years.
* @method static ChronosInterval year($years = 1) Alias for years
* @method static ChronosInterval months($months = 1) Create instance specifying a number of months.
* @method static ChronosInterval month($months = 1) Alias for months
* @method static ChronosInterval weeks($weeks = 1) Create instance specifying a number of weeks.
* @method static ChronosInterval week($weeks = 1) Alias for weeks
* @method static ChronosInterval days($days = 1) Create instance specifying a number of days.
* @method static ChronosInterval dayz($days = 1) Alias for days
* @method static ChronosInterval day($days = 1) Alias for days
* @method static ChronosInterval hours($hours = 1) Create instance specifying a number of hours.
* @method static ChronosInterval hour($hours = 1) Alias for hours
* @method static ChronosInterval minutes($minutes = 1) Create instance specifying a number of minutes.
* @method static ChronosInterval minute($minutes = 1) Alias for minutes
* @method static ChronosInterval seconds($seconds = 1) Create instance specifying a number of seconds.
* @method static ChronosInterval second($seconds = 1) Alias for seconds
*
* @method ChronosInterval years() years($years = 1) Set the years portion of the current interval.
* @method ChronosInterval year() year($years = 1) Alias for years.
* @method ChronosInterval months() months($months = 1) Set the months portion of the current interval.
* @method ChronosInterval month() month($months = 1) Alias for months.
* @method ChronosInterval weeks() weeks($weeks = 1) Set the weeks portion of the current interval. Will overwrite dayz value.
* @method ChronosInterval week() week($weeks = 1) Alias for weeks.
* @method ChronosInterval days() days($days = 1) Set the days portion of the current interval.
* @method ChronosInterval dayz() dayz($days = 1) Alias for days.
* @method ChronosInterval day() day($days = 1) Alias for days.
* @method ChronosInterval hours() hours($hours = 1) Set the hours portion of the current interval.
* @method ChronosInterval hour() hour($hours = 1) Alias for hours.
* @method ChronosInterval minutes() minutes($minutes = 1) Set the minutes portion of the current interval.
* @method ChronosInterval minute() minute($minutes = 1) Alias for minutes.
* @method ChronosInterval seconds() seconds($seconds = 1) Set the seconds portion of the current interval.
* @method ChronosInterval second() second($seconds = 1) Alias for seconds.
*/
class ChronosInterval extends DateInterval
{
/**
* Interval spec period designators
*/
const PERIOD_PREFIX = 'P';
const PERIOD_YEARS = 'Y';
const PERIOD_MONTHS = 'M';
const PERIOD_DAYS = 'D';
const PERIOD_TIME_PREFIX = 'T';
const PERIOD_HOURS = 'H';
const PERIOD_MINUTES = 'M';
const PERIOD_SECONDS = 'S';
/**
* Before PHP 5.4.20/5.5.4 instead of `false` days will be set to -99999 when the interval instance
* was created by DateTime:diff().
*/
const PHP_DAYS_FALSE = -99999;
/**
* Whether or not this object was created in HHVM
*
* @var bool
*/
protected $isHHVM = false;
/**
* Determine if the interval was created via DateTime:diff() or not.
*
* @param \DateInterval $interval The interval to check.
* @return bool
*/
protected static function wasCreatedFromDiff(DateInterval $interval)
{
return ($interval->days !== false && $interval->days !== static::PHP_DAYS_FALSE);
}
/**
* Create a new ChronosInterval instance.
*
* @param int|null $years The year to use.
* @param int|null $months The month to use.
* @param int|null $weeks The week to use.
* @param int|null $days The day to use.
* @param int|null $hours The hours to use.
* @param int|null $minutes The minutes to use.
* @param int|null $seconds The seconds to use.
*/
public function __construct($years = 1, $months = null, $weeks = null, $days = null, $hours = null, $minutes = null, $seconds = null)
{
$this->isHHVM = defined('HHVM_VERSION');
$spec = static::PERIOD_PREFIX;
$spec .= $years > 0 ? $years . static::PERIOD_YEARS : '';
$spec .= $months > 0 ? $months . static::PERIOD_MONTHS : '';
$specDays = 0;
$specDays += $weeks > 0 ? $weeks * ChronosInterface::DAYS_PER_WEEK : 0;
$specDays += $days > 0 ? $days : 0;
$spec .= ($specDays > 0) ? $specDays . static::PERIOD_DAYS : '';
if ($spec === static::PERIOD_PREFIX) {
$spec .= '0' . static::PERIOD_YEARS;
}
if ($hours > 0 || $minutes > 0 || $seconds > 0) {
$spec .= static::PERIOD_TIME_PREFIX;
$spec .= $hours > 0 ? $hours . static::PERIOD_HOURS : '';
$spec .= $minutes > 0 ? $minutes . static::PERIOD_MINUTES : '';
$spec .= $seconds > 0 ? $seconds . static::PERIOD_SECONDS : '';
}
parent::__construct($spec);
}
/**
* Create a new ChronosInterval instance from specific values.
* This is an alias for the constructor that allows better fluent
* syntax as it allows you to do ChronosInterval::create(1)->fn() rather than
* (new ChronosInterval(1))->fn().
*
* @param int|null $years The year to use.
* @param int|null $months The month to use.
* @param int|null $weeks The week to use.
* @param int|null $days The day to use.
* @param int|null $hours The hours to use.
* @param int|null $minutes The minutes to use.
* @param int|null $seconds The seconds to use.
* @return static
*/
public static function create($years = 1, $months = null, $weeks = null, $days = null, $hours = null, $minutes = null, $seconds = null)
{
return new static($years, $months, $weeks, $days, $hours, $minutes, $seconds);
}
/**
* Provide static helpers to create instances. Allows:
*
* ```
* ChronosInterval::years(3)
* // or
* ChronosInterval::month(1);
* ```
*
* Note: This is done using the magic method to allow static and instance methods to
* have the same names.
*
* @param string $name The property to configure. Accepts singular and plural forms.
* @param array $args Contains the value to use.
* @return static
*/
public static function __callStatic($name, $args)
{
$arg = count($args) === 0 ? 1 : $args[0];
switch ($name) {
case 'years':
case 'year':
return new static($arg);
case 'months':
case 'month':
return new static(null, $arg);
case 'weeks':
case 'week':
return new static(null, null, $arg);
case 'days':
case 'dayz':
case 'day':
return new static(null, null, null, $arg);
case 'hours':
case 'hour':
return new static(null, null, null, null, $arg);
case 'minutes':
case 'minute':
return new static(null, null, null, null, null, $arg);
case 'seconds':
case 'second':
return new static(null, null, null, null, null, null, $arg);
}
}
/**
* Create a ChronosInterval instance from a DateInterval one. Can not instance
* DateInterval objects created from DateTime::diff() as you can't externally
* set the $days field.
*
* @param \DateInterval $di The DateInterval instance to copy.
* @throws \InvalidArgumentException
* @return static
*/
public static function instance(DateInterval $di)
{
if (static::wasCreatedFromDiff($di)) {
throw new InvalidArgumentException(
"Can not instance a DateInterval object created from DateTime::diff()."
);
}
$instance = new static($di->y, $di->m, 0, $di->d, $di->h, $di->i, $di->s);
$instance->invert = $di->invert;
$instance->days = $di->days;
return $instance;
}
/**
* Get a part of the ChronosInterval object
*
* @param string $name The property to read.
* @throws \InvalidArgumentException
* @return int
*/
public function __get($name)
{
switch ($name) {
case 'years':
return $this->isHHVM ? parent::__get('y') : $this->y;
case 'months':
return $this->isHHVM ? parent::__get('m') : $this->m;
case 'dayz':
return $this->isHHVM ? parent::__get('d') : $this->d;
case 'hours':
return $this->isHHVM ? parent::__get('h') : $this->h;
case 'minutes':
return $this->isHHVM ? parent::__get('i') : $this->i;
case 'seconds':
return $this->isHHVM ? parent::__get('s') : $this->s;
case 'weeks':
return (int)floor(($this->isHHVM ? parent::__get('d') : $this->d) / ChronosInterface::DAYS_PER_WEEK);
case 'daysExcludeWeeks':
case 'dayzExcludeWeeks':
return $this->dayz % ChronosInterface::DAYS_PER_WEEK;
case 'days':
return $this->isHHVM ? parent::__get('days') : $this->days;
case 'y':
case 'm':
case 'd':
case 'h':
case 'i':
case 's':
case 'invert':
return parent::__get($name);
default:
throw new InvalidArgumentException(sprintf("Unknown getter '%s'", $name));
}
}
/**
* Set a part of the ChronosInterval object
*
* @param string $name The property to augment.
* @param int $val The value to change.
* @return void
* @throws \InvalidArgumentException
*/
public function __set($name, $val)
{
switch ($name) {
case 'years':
$this->isHHVM ? parent::__set('y', $val) : $this->y = $val;
break;
case 'months':
$this->isHHVM ? parent::__set('m', $val) : $this->m = $val;
break;
case 'weeks':
$val = $val * ChronosInterface::DAYS_PER_WEEK;
$this->isHHVM ? parent::__set('d', $val) : $this->d = $val;
break;
case 'dayz':
$this->isHHVM ? parent::__set('d', $val) : $this->d = $val;
break;
case 'hours':
$this->isHHVM ? parent::__set('h', $val) : $this->h = $val;
break;
case 'minutes':
$this->isHHVM ? parent::__set('i', $val) : $this->i = $val;
break;
case 'seconds':
$this->isHHVM ? parent::__set('s', $val) : $this->s = $val;
break;
case 'invert':
$this->isHHVM ? parent::__set('invert', $val) : $this->invert = $val;
break;
default:
if ($this->isHHVM) {
parent::__set($name, $val);
}
}
}
/**
* Allow setting of weeks and days to be cumulative.
*
* @param int $weeks Number of weeks to set
* @param int $days Number of days to set
* @return static
*/
public function weeksAndDays($weeks, $days)
{
$this->dayz = ($weeks * ChronosInterface::DAYS_PER_WEEK) + $days;
return $this;
}
/**
* Allow fluent calls on the setters... ChronosInterval::years(3)->months(5)->day().
*
* Note: This is done using the magic method to allow static and instance methods to
* have the same names.
*
* @param string $name The property name to augment. Accepts plural forms in addition
* to singular ones.
* @param array $args The value to set.
* @return static
*/
public function __call($name, $args)
{
$arg = count($args) === 0 ? 1 : $args[0];
switch ($name) {
case 'years':
case 'year':
$this->years = $arg;
break;
case 'months':
case 'month':
$this->months = $arg;
break;
case 'weeks':
case 'week':
$this->dayz = $arg * ChronosInterface::DAYS_PER_WEEK;
break;
case 'days':
case 'dayz':
case 'day':
$this->dayz = $arg;
break;
case 'hours':
case 'hour':
$this->hours = $arg;
break;
case 'minutes':
case 'minute':
$this->minutes = $arg;
break;
case 'seconds':
case 'second':
$this->seconds = $arg;
break;
}
return $this;
}
/**
* Add the passed interval to the current instance
*
* @param \DateInterval $interval The interval to add.
* @return static
*/
public function add(DateInterval $interval)
{
$sign = ($interval->invert === 1) ? -1 : 1;
if (static::wasCreatedFromDiff($interval)) {
$this->dayz = $this->dayz + ($interval->days * $sign);
} else {
$this->years = $this->years + ($interval->y * $sign);
$this->months = $this->months + ($interval->m * $sign);
$this->dayz = $this->dayz + ($interval->d * $sign);
$this->hours = $this->hours + ($interval->h * $sign);
$this->minutes = $this->minutes + ($interval->i * $sign);
$this->seconds = $this->seconds + ($interval->s * $sign);
}
return $this;
}
/**
* Returns the ISO 8601 interval string.
*
* @return string Interval as string representation
*/
public function __toString()
{
$date = array_filter([
static::PERIOD_YEARS => $this->y,
static::PERIOD_MONTHS => $this->m,
static::PERIOD_DAYS => $this->d,
]);
$time = array_filter([
static::PERIOD_HOURS => $this->h,
static::PERIOD_MINUTES => $this->i,
static::PERIOD_SECONDS => $this->s,
]);
$specString = static::PERIOD_PREFIX;
foreach ($date as $key => $value) {
$specString .= $value . $key;
}
if (count($time) > 0) {
$specString .= static::PERIOD_TIME_PREFIX;
foreach ($time as $key => $value) {
$specString .= $value . $key;
}
}
if ($specString === static::PERIOD_PREFIX) {
return 'PT0S';
}
return $this->invert === 1 ? '-' . $specString : $specString;
}
}