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<?php
declare(strict_types=1);
/**
* 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 BadMethodCallException;
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 int $microseconds Total microseconds of the current interval.
* @property-read int $dayzExcludeWeeks Total days remaining in the final week of the current instance (days % 7).
* @property-read int $daysExcludeWeeks alias of dayzExcludeWeeks
* @method static \Cake\Chronos\ChronosInterval years($years = 1) Create instance specifying a number of years.
* @method static \Cake\Chronos\ChronosInterval year($years = 1) Alias for years
* @method static \Cake\Chronos\ChronosInterval months($months = 1) Create instance specifying a number of months.
* @method static \Cake\Chronos\ChronosInterval month($months = 1) Alias for months
* @method static \Cake\Chronos\ChronosInterval weeks($weeks = 1) Create instance specifying a number of weeks.
* @method static \Cake\Chronos\ChronosInterval week($weeks = 1) Alias for weeks
* @method static \Cake\Chronos\ChronosInterval days($days = 1) Create instance specifying a number of days.
* @method static \Cake\Chronos\ChronosInterval dayz($days = 1) Alias for days
* @method static \Cake\Chronos\ChronosInterval day($days = 1) Alias for days
* @method static \Cake\Chronos\ChronosInterval hours($hours = 1) Create instance specifying a number of hours.
* @method static \Cake\Chronos\ChronosInterval hour($hours = 1) Alias for hours
* @method static \Cake\Chronos\ChronosInterval minutes($minutes = 1) Create instance specifying a number of minutes.
* @method static \Cake\Chronos\ChronosInterval minute($minutes = 1) Alias for minutes
* @method static \Cake\Chronos\ChronosInterval seconds($seconds = 1) Create instance specifying a number of seconds.
* @method static \Cake\Chronos\ChronosInterval second($seconds = 1) Alias for seconds
* @method static \Cake\Chronos\ChronosInterval microseconds($microseconds = 1) Create instance specifying a number of microseconds.
* @method static \Cake\Chronos\ChronosInterval microsecond($microseconds = 1) Alias for microseconds
*/
class ChronosInterval extends DateInterval
{
/**
* @var string
*/
public const PERIOD_PREFIX = 'P';
/**
* @var string
*/
public const PERIOD_YEARS = 'Y';
/**
* @var string
*/
public const PERIOD_MONTHS = 'M';
/**
* @var string
*/
public const PERIOD_DAYS = 'D';
/**
* @var string
*/
public const PERIOD_TIME_PREFIX = 'T';
/**
* @var string
*/
public const PERIOD_HOURS = 'H';
/**
* @var string
*/
public const PERIOD_MINUTES = 'M';
/**
* @var string
*/
public const PERIOD_SECONDS = 'S';
/**
* 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): bool
{
return $interval->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.
* @param int|null $microseconds The microseconds to use.
*/
public function __construct(
?int $years = 1,
?int $months = null,
?int $weeks = null,
?int $days = null,
?int $hours = null,
?int $minutes = null,
?int $seconds = null,
?int $microseconds = null
) {
$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);
if ($microseconds > 0) {
$this->f = $microseconds / 1000000;
}
}
/**
* 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.
* @param int|null $microseconds The microseconds to use.
* @return static
*/
public static function create(
?int $years = 1,
?int $months = null,
?int $weeks = null,
?int $days = null,
?int $hours = null,
?int $minutes = null,
?int $seconds = null,
?int $microseconds = null
): self {
return new static($years, $months, $weeks, $days, $hours, $minutes, $seconds, $microseconds);
}
/**
* 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(string $name, array $args): self
{
$arg = count($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);
case 'microseconds':
case 'microsecond':
return new static(null, null, null, null, null, null, null, $arg);
}
throw new BadMethodCallException(sprintf('Cannot create interval with `%s` units', $name));
}
/**
* 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 $di): self
{
if (static::wasCreatedFromDiff($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->f = $di->f;
$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(string $name)
{
switch ($name) {
case 'years':
return $this->y;
case 'months':
return $this->m;
case 'dayz':
return $this->d;
case 'hours':
return $this->h;
case 'minutes':
return $this->i;
case 'seconds':
return $this->s;
case 'microseconds':
return (int)($this->f * 1000000);
case 'weeks':
return (int)floor($this->d / ChronosInterface::DAYS_PER_WEEK);
case 'daysExcludeWeeks':
case 'dayzExcludeWeeks':
return $this->dayz % ChronosInterface::DAYS_PER_WEEK;
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(string $name, $val): void
{
switch ($name) {
case 'years':
$this->y = $val;
break;
case 'months':
$this->m = $val;
break;
case 'weeks':
$val = $val * ChronosInterface::DAYS_PER_WEEK;
$this->d = $val;
break;
case 'dayz':
$this->d = $val;
break;
case 'hours':
$this->h = $val;
break;
case 'minutes':
$this->i = $val;
break;
case 'seconds':
$this->s = $val;
break;
case 'microseconds':
$this->f = $val / 1000000;
break;
case 'invert':
$this->invert = $val;
break;
}
}
/**
* 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 $this
*/
public function weeksAndDays(int $weeks, int $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 $this
*/
public function __call(string $name, array $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;
case 'microseconds':
case 'microsecond':
$this->microseconds = $arg;
break;
}
return $this;
}
/**
* Add the passed interval to the current instance
*
* @param \DateInterval $interval The interval to add.
* @return $this
*/
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);
$this->microseconds = $this->microseconds + (int)($interval->f * 1000000 * $sign);
}
return $this;
}
/**
* Returns the ISO 8601 interval string.
*
* @return string Interval as string representation
*/
public function __toString(): string
{
// equivalence
$oneMinuteInSeconds = 60;
$oneHourInSeconds = $oneMinuteInSeconds * 60;
$oneDayInSeconds = $oneHourInSeconds * 24;
$oneMonthInDays = 365 / 12;
$oneMonthInSeconds = $oneDayInSeconds * $oneMonthInDays;
$oneYearInSeconds = 12 * $oneMonthInSeconds;
// convert
$ySecs = $this->y * $oneYearInSeconds;
$mSecs = $this->m * $oneMonthInSeconds;
$dSecs = $this->d * $oneDayInSeconds;
$hSecs = $this->h * $oneHourInSeconds;
$iSecs = $this->i * $oneMinuteInSeconds;
$sSecs = $this->s;
$totalSecs = $ySecs + $mSecs + $dSecs + $hSecs + $iSecs + $sSecs;
$y = null;
$m = null;
$d = null;
$h = null;
$i = null;
// years
if ($totalSecs >= $oneYearInSeconds) {
$y = floor($totalSecs / $oneYearInSeconds);
$totalSecs = $totalSecs - $y * $oneYearInSeconds;
}
// months
if ($totalSecs >= $oneMonthInSeconds) {
$m = floor($totalSecs / $oneMonthInSeconds);
$totalSecs = $totalSecs - $m * $oneMonthInSeconds;
}
// days
if ($totalSecs >= $oneDayInSeconds) {
$d = floor($totalSecs / $oneDayInSeconds);
$totalSecs = $totalSecs - $d * $oneDayInSeconds;
}
// hours
if ($totalSecs >= $oneHourInSeconds) {
$h = floor($totalSecs / $oneHourInSeconds);
$totalSecs = $totalSecs - $h * $oneHourInSeconds;
}
// minutes
if ($totalSecs >= $oneMinuteInSeconds) {
$i = floor($totalSecs / $oneMinuteInSeconds);
$totalSecs = $totalSecs - $i * $oneMinuteInSeconds;
}
$s = $totalSecs;
$date = array_filter([
static::PERIOD_YEARS => $y,
static::PERIOD_MONTHS => $m,
static::PERIOD_DAYS => $d,
]);
$time = array_filter([
static::PERIOD_HOURS => $h,
static::PERIOD_MINUTES => $i,
static::PERIOD_SECONDS => $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;
}
}
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