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<?php
/*
* This file is part of the Carbon package.
*
* (c) Brian Nesbitt <brian@nesbot.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Carbon;
use BadMethodCallException;
use Closure;
use Countable;
use DateInterval;
use DateTime;
use DateTimeInterface;
use InvalidArgumentException;
use Iterator;
use ReflectionClass;
use ReflectionFunction;
use ReflectionMethod;
use RuntimeException;
/**
* Substitution of DatePeriod with some modifications and many more features.
* Fully compatible with PHP 5.3+!
*
* @method static CarbonPeriod start($date, $inclusive = null) Create instance specifying start date.
* @method static CarbonPeriod since($date, $inclusive = null) Alias for start().
* @method static CarbonPeriod sinceNow($inclusive = null) Create instance with start date set to now.
* @method static CarbonPeriod end($date = null, $inclusive = null) Create instance specifying end date.
* @method static CarbonPeriod until($date = null, $inclusive = null) Alias for end().
* @method static CarbonPeriod untilNow($inclusive = null) Create instance with end date set to now.
* @method static CarbonPeriod dates($start, $end = null) Create instance with start and end date.
* @method static CarbonPeriod between($start, $end = null) Create instance with start and end date.
* @method static CarbonPeriod recurrences($recurrences = null) Create instance with maximum number of recurrences.
* @method static CarbonPeriod times($recurrences = null) Alias for recurrences().
* @method static CarbonPeriod options($options = null) Create instance with options.
* @method static CarbonPeriod toggle($options, $state = null) Create instance with options toggled on or off.
* @method static CarbonPeriod filter($callback, $name = null) Create instance with filter added to the stack.
* @method static CarbonPeriod push($callback, $name = null) Alias for filter().
* @method static CarbonPeriod prepend($callback, $name = null) Create instance with filter prepened to the stack.
* @method static CarbonPeriod filters(array $filters) Create instance with filters stack.
* @method static CarbonPeriod interval($interval) Create instance with given date interval.
* @method static CarbonPeriod each($interval) Create instance with given date interval.
* @method static CarbonPeriod every($interval) Create instance with given date interval.
* @method static CarbonPeriod step($interval) Create instance with given date interval.
* @method static CarbonPeriod stepBy($interval) Create instance with given date interval.
* @method static CarbonPeriod invert() Create instance with inverted date interval.
* @method static CarbonPeriod years($years = 1) Create instance specifying a number of years for date interval.
* @method static CarbonPeriod year($years = 1) Alias for years().
* @method static CarbonPeriod months($months = 1) Create instance specifying a number of months for date interval.
* @method static CarbonPeriod month($months = 1) Alias for months().
* @method static CarbonPeriod weeks($weeks = 1) Create instance specifying a number of weeks for date interval.
* @method static CarbonPeriod week($weeks = 1) Alias for weeks().
* @method static CarbonPeriod days($days = 1) Create instance specifying a number of days for date interval.
* @method static CarbonPeriod dayz($days = 1) Alias for days().
* @method static CarbonPeriod day($days = 1) Alias for days().
* @method static CarbonPeriod hours($hours = 1) Create instance specifying a number of hours for date interval.
* @method static CarbonPeriod hour($hours = 1) Alias for hours().
* @method static CarbonPeriod minutes($minutes = 1) Create instance specifying a number of minutes for date interval.
* @method static CarbonPeriod minute($minutes = 1) Alias for minutes().
* @method static CarbonPeriod seconds($seconds = 1) Create instance specifying a number of seconds for date interval.
* @method static CarbonPeriod second($seconds = 1) Alias for seconds().
* @method CarbonPeriod start($date, $inclusive = null) Change the period start date.
* @method CarbonPeriod since($date, $inclusive = null) Alias for start().
* @method CarbonPeriod sinceNow($inclusive = null) Change the period start date to now.
* @method CarbonPeriod end($date = null, $inclusive = null) Change the period end date.
* @method CarbonPeriod until($date = null, $inclusive = null) Alias for end().
* @method CarbonPeriod untilNow($inclusive = null) Change the period end date to now.
* @method CarbonPeriod dates($start, $end = null) Change the period start and end date.
* @method CarbonPeriod recurrences($recurrences = null) Change the maximum number of recurrences.
* @method CarbonPeriod times($recurrences = null) Alias for recurrences().
* @method CarbonPeriod options($options = null) Change the period options.
* @method CarbonPeriod toggle($options, $state = null) Toggle given options on or off.
* @method CarbonPeriod filter($callback, $name = null) Add a filter to the stack.
* @method CarbonPeriod push($callback, $name = null) Alias for filter().
* @method CarbonPeriod prepend($callback, $name = null) Prepend a filter to the stack.
* @method CarbonPeriod filters(array $filters = array()) Set filters stack.
* @method CarbonPeriod interval($interval) Change the period date interval.
* @method CarbonPeriod invert() Invert the period date interval.
* @method CarbonPeriod years($years = 1) Set the years portion of the date interval.
* @method CarbonPeriod year($years = 1) Alias for years().
* @method CarbonPeriod months($months = 1) Set the months portion of the date interval.
* @method CarbonPeriod month($months = 1) Alias for months().
* @method CarbonPeriod weeks($weeks = 1) Set the weeks portion of the date interval.
* @method CarbonPeriod week($weeks = 1) Alias for weeks().
* @method CarbonPeriod days($days = 1) Set the days portion of the date interval.
* @method CarbonPeriod dayz($days = 1) Alias for days().
* @method CarbonPeriod day($days = 1) Alias for days().
* @method CarbonPeriod hours($hours = 1) Set the hours portion of the date interval.
* @method CarbonPeriod hour($hours = 1) Alias for hours().
* @method CarbonPeriod minutes($minutes = 1) Set the minutes portion of the date interval.
* @method CarbonPeriod minute($minutes = 1) Alias for minutes().
* @method CarbonPeriod seconds($seconds = 1) Set the seconds portion of the date interval.
* @method CarbonPeriod second($seconds = 1) Alias for seconds().
*/
class CarbonPeriod implements Iterator, Countable
{
/**
* Built-in filters.
*
* @var string
*/
const RECURRENCES_FILTER = 'Carbon\CarbonPeriod::filterRecurrences';
const END_DATE_FILTER = 'Carbon\CarbonPeriod::filterEndDate';
/**
* Special value which can be returned by filters to end iteration. Also a filter.
*
* @var string
*/
const END_ITERATION = 'Carbon\CarbonPeriod::endIteration';
/**
* Available options.
*
* @var int
*/
const EXCLUDE_START_DATE = 1;
const EXCLUDE_END_DATE = 2;
/**
* Number of maximum attempts before giving up on finding next valid date.
*
* @var int
*/
const NEXT_MAX_ATTEMPTS = 1000;
/**
* The registered macros.
*
* @var array
*/
protected static $macros = array();
/**
* Underlying date interval instance. Always present, one day by default.
*
* @var CarbonInterval
*/
protected $dateInterval;
/**
* Whether current date interval was set by default.
*
* @var bool
*/
protected $isDefaultInterval;
/**
* The filters stack.
*
* @var array
*/
protected $filters = array();
/**
* Period start date. Applied on rewind. Always present, now by default.
*
* @var Carbon
*/
protected $startDate;
/**
* Period end date. For inverted interval should be before the start date. Applied via a filter.
*
* @var Carbon|null
*/
protected $endDate;
/**
* Limit for number of recurrences. Applied via a filter.
*
* @var int|null
*/
protected $recurrences;
/**
* Iteration options.
*
* @var int
*/
protected $options;
/**
* Index of current date. Always sequential, even if some dates are skipped by filters.
* Equal to null only before the first iteration.
*
* @var int
*/
protected $key;
/**
* Current date. May temporarily hold unaccepted value when looking for a next valid date.
* Equal to null only before the first iteration.
*
* @var Carbon
*/
protected $current;
/**
* Timezone of current date. Taken from the start date.
*
* @var \DateTimeZone|null
*/
protected $timezone;
/**
* The cached validation result for current date.
*
* @var bool|string|null
*/
protected $validationResult;
/**
* Create a new instance.
*
* @return static
*/
public static function create()
{
return static::createFromArray(func_get_args());
}
/**
* Create a new instance from an array of parameters.
*
* @param array $params
*
* @return static
*/
public static function createFromArray(array $params)
{
// PHP 5.3 equivalent of new static(...$params).
$reflection = new ReflectionClass(get_class());
/** @var static $instance */
$instance = $reflection->newInstanceArgs($params);
return $instance;
}
/**
* Create CarbonPeriod from ISO 8601 string.
*
* @param string $iso
* @param int|null $options
*
* @return static
*/
public static function createFromIso($iso, $options = null)
{
$params = static::parseIso8601($iso);
$instance = static::createFromArray($params);
if ($options !== null) {
$instance->setOptions($options);
}
return $instance;
}
/**
* Return whether given interval contains non zero value of any time unit.
*
* @param \DateInterval $interval
*
* @return bool
*/
protected static function intervalHasTime(DateInterval $interval)
{
// The array_key_exists and get_object_vars are used as a workaround to check microsecond support.
// Both isset and property_exists will fail on PHP 7.0.14 - 7.0.21 due to the following bug:
// https://bugs.php.net/bug.php?id=74852
return $interval->h || $interval->i || $interval->s || array_key_exists('f', get_object_vars($interval)) && $interval->f;
}
/**
* Return whether given callable is a string pointing to one of Carbon's is* methods
* and should be automatically converted to a filter callback.
*
* @param callable $callable
*
* @return bool
*/
protected static function isCarbonPredicateMethod($callable)
{
return is_string($callable) && substr($callable, 0, 2) === 'is' && (method_exists('Carbon\Carbon', $callable) || Carbon::hasMacro($callable));
}
/**
* Return whether given variable is an ISO 8601 specification.
*
* Note: Check is very basic, as actual validation will be done later when parsing.
* We just want to ensure that variable is not any other type of a valid parameter.
*
* @param mixed $var
*
* @return bool
*/
protected static function isIso8601($var)
{
if (!is_string($var)) {
return false;
}
// Match slash but not within a timezone name.
$part = '[a-z]+(?:[_-][a-z]+)*';
preg_match("#\b$part/$part\b|(/)#i", $var, $match);
return isset($match[1]);
}
/**
* Parse given ISO 8601 string into an array of arguments.
*
* @param string $iso
*
* @return array
*/
protected static function parseIso8601($iso)
{
$result = array();
$interval = null;
$start = null;
$end = null;
foreach (explode('/', $iso) as $key => $part) {
if ($key === 0 && preg_match('/^R([0-9]*)$/', $part, $match)) {
$parsed = strlen($match[1]) ? (int) $match[1] : null;
} elseif ($interval === null && $parsed = CarbonInterval::make($part)) {
$interval = $part;
} elseif ($start === null && $parsed = Carbon::make($part)) {
$start = $part;
} elseif ($end === null && $parsed = Carbon::make(static::addMissingParts($start, $part))) {
$end = $part;
} else {
throw new InvalidArgumentException("Invalid ISO 8601 specification: $iso.");
}
$result[] = $parsed;
}
return $result;
}
/**
* Add missing parts of the target date from the soure date.
*
* @param string $source
* @param string $target
*
* @return string
*/
protected static function addMissingParts($source, $target)
{
$pattern = '/'.preg_replace('/[0-9]+/', '[0-9]+', preg_quote($target, '/')).'$/';
$result = preg_replace($pattern, $target, $source, 1, $count);
return $count ? $result : $target;
}
/**
* Register a custom macro.
*
* @param string $name
* @param object|callable $macro
*
* @return void
*/
public static function macro($name, $macro)
{
static::$macros[$name] = $macro;
}
/**
* Remove all macros.
*/
public static function resetMacros()
{
static::$macros = array();
}
/**
* Register macros from a mixin object.
*
* @param object $mixin
*
* @throws \ReflectionException
*
* @return void
*/
public static function mixin($mixin)
{
$reflection = new ReflectionClass($mixin);
$methods = $reflection->getMethods(
ReflectionMethod::IS_PUBLIC | ReflectionMethod::IS_PROTECTED
);
foreach ($methods as $method) {
$method->setAccessible(true);
static::macro($method->name, $method->invoke($mixin));
}
}
/**
* Check if macro is registered.
*
* @param string $name
*
* @return bool
*/
public static function hasMacro($name)
{
return isset(static::$macros[$name]);
}
/**
* Provide static proxy for instance aliases.
*
* @param string $method
* @param array $parameters
*
* @return mixed
*/
public static function __callStatic($method, $parameters)
{
return call_user_func_array(
array(new static, $method), $parameters
);
}
/**
* CarbonPeriod constructor.
*
* @throws InvalidArgumentException
*/
public function __construct()
{
// Parse and assign arguments one by one. First argument may be an ISO 8601 spec,
// which will be first parsed into parts and then processed the same way.
$arguments = func_get_args();
if (count($arguments) && static::isIso8601($iso = $arguments[0])) {
array_splice($arguments, 0, 1, static::parseIso8601($iso));
}
foreach ($arguments as $argument) {
if ($this->dateInterval === null && $parsed = CarbonInterval::make($argument)) {
$this->setDateInterval($parsed);
} elseif ($this->startDate === null && $parsed = Carbon::make($argument)) {
$this->setStartDate($parsed);
} elseif ($this->endDate === null && $parsed = Carbon::make($argument)) {
$this->setEndDate($parsed);
} elseif ($this->recurrences === null && $this->endDate === null && is_numeric($argument)) {
$this->setRecurrences($argument);
} elseif ($this->options === null && (is_int($argument) || $argument === null)) {
$this->setOptions($argument);
} else {
throw new InvalidArgumentException('Invalid constructor parameters.');
}
}
if ($this->startDate === null) {
$this->setStartDate(Carbon::now());
}
if ($this->dateInterval === null) {
$this->setDateInterval(CarbonInterval::day());
$this->isDefaultInterval = true;
}
if ($this->options === null) {
$this->setOptions(0);
}
}
/**
* Change the period date interval.
*
* @param DateInterval|string $interval
*
* @throws \InvalidArgumentException
*
* @return $this
*/
public function setDateInterval($interval)
{
if (!$interval = CarbonInterval::make($interval)) {
throw new InvalidArgumentException('Invalid interval.');
}
if ($interval->spec() === 'PT0S') {
throw new InvalidArgumentException('Empty interval is not accepted.');
}
$this->dateInterval = $interval;
$this->isDefaultInterval = false;
$this->handleChangedParameters();
return $this;
}
/**
* Invert the period date interval.
*
* @return $this
*/
public function invertDateInterval()
{
$interval = $this->dateInterval->invert();
return $this->setDateInterval($interval);
}
/**
* Set start and end date.
*
* @param DateTime|DateTimeInterface|string $start
* @param DateTime|DateTimeInterface|string|null $end
*
* @return $this
*/
public function setDates($start, $end)
{
$this->setStartDate($start);
$this->setEndDate($end);
return $this;
}
/**
* Change the period options.
*
* @param int|null $options
*
* @throws \InvalidArgumentException
*
* @return $this
*/
public function setOptions($options)
{
if (!is_int($options) && !is_null($options)) {
throw new InvalidArgumentException('Invalid options.');
}
$this->options = $options ?: 0;
$this->handleChangedParameters();
return $this;
}
/**
* Get the period options.
*
* @return int
*/
public function getOptions()
{
return $this->options;
}
/**
* Toggle given options on or off.
*
* @param int $options
* @param bool|null $state
*
* @throws \InvalidArgumentException
*
* @return $this
*/
public function toggleOptions($options, $state = null)
{
if ($state === null) {
$state = ($this->options & $options) !== $options;
}
return $this->setOptions($state ?
$this->options | $options :
$this->options & ~$options
);
}
/**
* Toggle EXCLUDE_START_DATE option.
*
* @param bool $state
*
* @return $this
*/
public function excludeStartDate($state = true)
{
return $this->toggleOptions(static::EXCLUDE_START_DATE, $state);
}
/**
* Toggle EXCLUDE_END_DATE option.
*
* @param bool $state
*
* @return $this
*/
public function excludeEndDate($state = true)
{
return $this->toggleOptions(static::EXCLUDE_END_DATE, $state);
}
/**
* Get the underlying date interval.
*
* @return CarbonInterval
*/
public function getDateInterval()
{
return $this->dateInterval->copy();
}
/**
* Get start date of the period.
*
* @return Carbon
*/
public function getStartDate()
{
return $this->startDate->copy();
}
/**
* Get end date of the period.
*
* @return Carbon|null
*/
public function getEndDate()
{
if ($this->endDate) {
return $this->endDate->copy();
}
}
/**
* Get number of recurrences.
*
* @return int|null
*/
public function getRecurrences()
{
return $this->recurrences;
}
/**
* Returns true if the start date should be excluded.
*
* @return bool
*/
public function isStartExcluded()
{
return ($this->options & static::EXCLUDE_START_DATE) !== 0;
}
/**
* Returns true if the end date should be excluded.
*
* @return bool
*/
public function isEndExcluded()
{
return ($this->options & static::EXCLUDE_END_DATE) !== 0;
}
/**
* Add a filter to the stack.
*
* @param callable $callback
* @param string $name
*
* @return $this
*/
public function addFilter($callback, $name = null)
{
$tuple = $this->createFilterTuple(func_get_args());
$this->filters[] = $tuple;
$this->handleChangedParameters();
return $this;
}
/**
* Prepend a filter to the stack.
*
* @param callable $callback
* @param string $name
*
* @return $this
*/
public function prependFilter($callback, $name = null)
{
$tuple = $this->createFilterTuple(func_get_args());
array_unshift($this->filters, $tuple);
$this->handleChangedParameters();
return $this;
}
/**
* Create a filter tuple from raw parameters.
*
* Will create an automatic filter callback for one of Carbon's is* methods.
*
* @param array $parameters
*
* @return array
*/
protected function createFilterTuple(array $parameters)
{
$method = array_shift($parameters);
if (!$this->isCarbonPredicateMethod($method)) {
return array($method, array_shift($parameters));
}
return array(function ($date) use ($method, $parameters) {
return call_user_func_array(array($date, $method), $parameters);
}, $method);
}
/**
* Remove a filter by instance or name.
*
* @param callable|string $filter
*
* @return $this
*/
public function removeFilter($filter)
{
$key = is_callable($filter) ? 0 : 1;
$this->filters = array_values(array_filter(
$this->filters,
function ($tuple) use ($key, $filter) {
return $tuple[$key] !== $filter;
}
));
$this->updateInternalState();
$this->handleChangedParameters();
return $this;
}
/**
* Return whether given instance or name is in the filter stack.
*
* @param callable|string $filter
*
* @return bool
*/
public function hasFilter($filter)
{
$key = is_callable($filter) ? 0 : 1;
foreach ($this->filters as $tuple) {
if ($tuple[$key] === $filter) {
return true;
}
}
return false;
}
/**
* Get filters stack.
*
* @return array
*/
public function getFilters()
{
return $this->filters;
}
/**
* Set filters stack.
*
* @param array $filters
*
* @return $this
*/
public function setFilters(array $filters)
{
$this->filters = $filters;
$this->updateInternalState();
$this->handleChangedParameters();
return $this;
}
/**
* Reset filters stack.
*
* @return $this
*/
public function resetFilters()
{
$this->filters = array();
if ($this->endDate !== null) {
$this->filters[] = array(static::END_DATE_FILTER, null);
}
if ($this->recurrences !== null) {
$this->filters[] = array(static::RECURRENCES_FILTER, null);
}
$this->handleChangedParameters();
return $this;
}
/**
* Update properties after removing built-in filters.
*
* @return void
*/
protected function updateInternalState()
{
if (!$this->hasFilter(static::END_DATE_FILTER)) {
$this->endDate = null;
}
if (!$this->hasFilter(static::RECURRENCES_FILTER)) {
$this->recurrences = null;
}
}
/**
* Add a recurrences filter (set maximum number of recurrences).
*
* @param int|null $recurrences
*
* @throws \InvalidArgumentException
*
* @return $this
*/
public function setRecurrences($recurrences)
{
if (!is_numeric($recurrences) && !is_null($recurrences) || $recurrences < 0) {
throw new InvalidArgumentException('Invalid number of recurrences.');
}
if ($recurrences === null) {
return $this->removeFilter(static::RECURRENCES_FILTER);
}
$this->recurrences = (int) $recurrences;
if (!$this->hasFilter(static::RECURRENCES_FILTER)) {
return $this->addFilter(static::RECURRENCES_FILTER);
}
$this->handleChangedParameters();
return $this;
}
/**
* Recurrences filter callback (limits number of recurrences).
*
* @param \Carbon\Carbon $current
* @param int $key
*
* @return bool|string
*/
protected function filterRecurrences($current, $key)
{
if ($key < $this->recurrences) {
return true;
}
return static::END_ITERATION;
}
/**
* Change the period start date.
*
* @param DateTime|DateTimeInterface|string $date
* @param bool|null $inclusive
*
* @throws \InvalidArgumentException
*
* @return $this
*/
public function setStartDate($date, $inclusive = null)
{
if (!$date = Carbon::make($date)) {
throw new InvalidArgumentException('Invalid start date.');
}
$this->startDate = $date;
if ($inclusive !== null) {
$this->toggleOptions(static::EXCLUDE_START_DATE, !$inclusive);
}
return $this;
}
/**
* Change the period end date.
*
* @param DateTime|DateTimeInterface|string|null $date
* @param bool|null $inclusive
*
* @throws \InvalidArgumentException
*
* @return $this
*/
public function setEndDate($date, $inclusive = null)
{
if (!is_null($date) && !$date = Carbon::make($date)) {
throw new InvalidArgumentException('Invalid end date.');
}
if (!$date) {
return $this->removeFilter(static::END_DATE_FILTER);
}
$this->endDate = $date;
if ($inclusive !== null) {
$this->toggleOptions(static::EXCLUDE_END_DATE, !$inclusive);
}
if (!$this->hasFilter(static::END_DATE_FILTER)) {
return $this->addFilter(static::END_DATE_FILTER);
}
$this->handleChangedParameters();
return $this;
}
/**
* End date filter callback.
*
* @param \Carbon\Carbon $current
*
* @return bool|string
*/
protected function filterEndDate($current)
{
if (!$this->isEndExcluded() && $current == $this->endDate) {
return true;
}
if ($this->dateInterval->invert ? $current > $this->endDate : $current < $this->endDate) {
return true;
}
return static::END_ITERATION;
}
/**
* End iteration filter callback.
*
* @return string
*/
protected function endIteration()
{
return static::END_ITERATION;
}
/**
* Handle change of the parameters.
*/
protected function handleChangedParameters()
{
$this->validationResult = null;
}
/**
* Validate current date and stop iteration when necessary.
*
* Returns true when current date is valid, false if it is not, or static::END_ITERATION
* when iteration should be stopped.
*
* @return bool|string
*/
protected function validateCurrentDate()
{
if ($this->current === null) {
$this->rewind();
}
// Check after the first rewind to avoid repeating the initial validation.
if ($this->validationResult !== null) {
return $this->validationResult;
}
return $this->validationResult = $this->checkFilters();
}
/**
* Check whether current value and key pass all the filters.
*
* @return bool|string
*/
protected function checkFilters()
{
$current = $this->prepareForReturn($this->current);
foreach ($this->filters as $tuple) {
$result = call_user_func(
$tuple[0], $current->copy(), $this->key, $this
);
if ($result === static::END_ITERATION) {
return static::END_ITERATION;
}
if (!$result) {
return false;
}
}
return true;
}
/**
* Prepare given date to be returned to the external logic.
*
* @param Carbon $date
*
* @return Carbon
*/
protected function prepareForReturn(Carbon $date)
{
$date = $date->copy();
if ($this->timezone) {
$date->setTimezone($this->timezone);
}
return $date;
}
/**
* Check if the current position is valid.
*
* @return bool
*/
public function valid()
{
return $this->validateCurrentDate() === true;
}
/**
* Return the current key.
*
* @return int|null
*/
public function key()
{
if ($this->valid()) {
return $this->key;
}
}
/**
* Return the current date.
*
* @return Carbon|null
*/
public function current()
{
if ($this->valid()) {
return $this->prepareForReturn($this->current);
}
}
/**
* Move forward to the next date.
*
* @throws \RuntimeException
*
* @return void
*/
public function next()
{
if ($this->current === null) {
$this->rewind();
}
if ($this->validationResult !== static::END_ITERATION) {
$this->key++;
$this->incrementCurrentDateUntilValid();
}
}
/**
* Rewind to the start date.
*
* Iterating over a date in the UTC timezone avoids bug during backward DST change.
*
* @see https://bugs.php.net/bug.php?id=72255
* @see https://bugs.php.net/bug.php?id=74274
* @see https://wiki.php.net/rfc/datetime_and_daylight_saving_time
*
* @throws \RuntimeException
*
* @return void
*/
public function rewind()
{
$this->key = 0;
$this->current = $this->startDate->copy();
$this->timezone = static::intervalHasTime($this->dateInterval) ? $this->current->getTimezone() : null;
if ($this->timezone) {
$this->current->setTimezone('UTC');
}
$this->validationResult = null;
if ($this->isStartExcluded() || $this->validateCurrentDate() === false) {
$this->incrementCurrentDateUntilValid();
}
}
/**
* Skip iterations and returns iteration state (false if ended, true if still valid).
*
* @param int $count steps number to skip (1 by default)
*
* @return bool
*/
public function skip($count = 1)
{
for ($i = $count; $this->valid() && $i > 0; $i--) {
$this->next();
}
return $this->valid();
}
/**
* Keep incrementing the current date until a valid date is found or the iteration is ended.
*
* @throws \RuntimeException
*
* @return void
*/
protected function incrementCurrentDateUntilValid()
{
$attempts = 0;
do {
$this->current->add($this->dateInterval);
$this->validationResult = null;
if (++$attempts > static::NEXT_MAX_ATTEMPTS) {
throw new RuntimeException('Could not find next valid date.');
}
} while ($this->validateCurrentDate() === false);
}
/**
* Format the date period as ISO 8601.
*
* @return string
*/
public function toIso8601String()
{
$parts = array();
if ($this->recurrences !== null) {
$parts[] = 'R'.$this->recurrences;
}
$parts[] = $this->startDate->toIso8601String();
$parts[] = $this->dateInterval->spec();
if ($this->endDate !== null) {
$parts[] = $this->endDate->toIso8601String();
}
return implode('/', $parts);
}
/**
* Convert the date period into a string.
*
* @return string
*/
public function toString()
{
$translator = Carbon::getTranslator();
$parts = array();
$format = !$this->startDate->isStartOfDay() || $this->endDate && !$this->endDate->isStartOfDay()
? 'Y-m-d H:i:s'
: 'Y-m-d';
if ($this->recurrences !== null) {
$parts[] = $translator->transChoice('period_recurrences', $this->recurrences, array(':count' => $this->recurrences));
}
$parts[] = $translator->trans('period_interval', array(':interval' => $this->dateInterval->forHumans()));
$parts[] = $translator->trans('period_start_date', array(':date' => $this->startDate->format($format)));
if ($this->endDate !== null) {
$parts[] = $translator->trans('period_end_date', array(':date' => $this->endDate->format($format)));
}
$result = implode(' ', $parts);
return mb_strtoupper(mb_substr($result, 0, 1)).mb_substr($result, 1);
}
/**
* Format the date period as ISO 8601.
*
* @return string
*/
public function spec()
{
return $this->toIso8601String();
}
/**
* Convert the date period into an array without changing current iteration state.
*
* @return array
*/
public function toArray()
{
$state = array(
$this->key,
$this->current ? $this->current->copy() : null,
$this->validationResult,
);
$result = iterator_to_array($this);
list(
$this->key,
$this->current,
$this->validationResult
) = $state;
return $result;
}
/**
* Count dates in the date period.
*
* @return int
*/
public function count()
{
return count($this->toArray());
}
/**
* Return the first date in the date period.
*
* @return Carbon|null
*/
public function first()
{
if ($array = $this->toArray()) {
return $array[0];
}
}
/**
* Return the last date in the date period.
*
* @return Carbon|null
*/
public function last()
{
if ($array = $this->toArray()) {
return $array[count($array) - 1];
}
}
/**
* Call given macro.
*
* @param string $name
* @param array $parameters
*
* @return mixed
*/
protected function callMacro($name, $parameters)
{
$macro = static::$macros[$name];
$reflection = new ReflectionFunction($macro);
$reflectionParameters = $reflection->getParameters();
$expectedCount = count($reflectionParameters);
$actualCount = count($parameters);
if ($expectedCount > $actualCount && $reflectionParameters[$expectedCount - 1]->name === 'self') {
for ($i = $actualCount; $i < $expectedCount - 1; $i++) {
$parameters[] = $reflectionParameters[$i]->getDefaultValue();
}
$parameters[] = $this;
}
if ($macro instanceof Closure && method_exists($macro, 'bindTo')) {
$macro = $macro->bindTo($this, get_class($this));
}
return call_user_func_array($macro, $parameters);
}
/**
* Convert the date period into a string.
*
* @return string
*/
public function __toString()
{
return $this->toString();
}
/**
* Add aliases for setters.
*
* CarbonPeriod::days(3)->hours(5)->invert()
* ->sinceNow()->until('2010-01-10')
* ->filter(...)
* ->count()
*
* Note: We use magic method to let static and instance aliases with the same names.
*
* @param string $method
* @param array $parameters
*
* @return mixed
*/
public function __call($method, $parameters)
{
if (static::hasMacro($method)) {
return $this->callMacro($method, $parameters);
}
$first = count($parameters) >= 1 ? $parameters[0] : null;
$second = count($parameters) >= 2 ? $parameters[1] : null;
switch ($method) {
case 'start':
case 'since':
return $this->setStartDate($first, $second);
case 'sinceNow':
return $this->setStartDate(new Carbon, $first);
case 'end':
case 'until':
return $this->setEndDate($first, $second);
case 'untilNow':
return $this->setEndDate(new Carbon, $first);
case 'dates':
case 'between':
return $this->setDates($first, $second);
case 'recurrences':
case 'times':
return $this->setRecurrences($first);
case 'options':
return $this->setOptions($first);
case 'toggle':
return $this->toggleOptions($first, $second);
case 'filter':
case 'push':
return $this->addFilter($first, $second);
case 'prepend':
return $this->prependFilter($first, $second);
case 'filters':
return $this->setFilters($first ?: array());
case 'interval':
case 'each':
case 'every':
case 'step':
case 'stepBy':
return $this->setDateInterval($first);
case 'invert':
return $this->invertDateInterval();
case 'years':
case 'year':
case 'months':
case 'month':
case 'weeks':
case 'week':
case 'days':
case 'dayz':
case 'day':
case 'hours':
case 'hour':
case 'minutes':
case 'minute':
case 'seconds':
case 'second':
return $this->setDateInterval(call_user_func(
// Override default P1D when instantiating via fluent setters.
array($this->isDefaultInterval ? new CarbonInterval('PT0S') : $this->dateInterval, $method),
count($parameters) === 0 ? 1 : $first
));
}
throw new BadMethodCallException("Method $method does not exist.");
}
}
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