TYPO3 v15 dev-main snapshot ()
This commit is contained in:
@@ -0,0 +1,213 @@
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<?php
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declare(strict_types=1);
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/*
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* This file is part of the TYPO3 CMS project.
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*
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* It is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, either version 2
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* of the License, or any later version.
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*
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* For the full copyright and license information, please read the
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* LICENSE.txt file that was distributed with this source code.
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*
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* The TYPO3 project - inspiring people to share!
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*/
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namespace TYPO3\CMS\Scheduler\CronCommand;
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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/**
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* This class provides calculations for the cron command format.
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*
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* @internal not part of TYPO3 Public API
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*/
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class CronCommand
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{
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/**
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* Normalized sections of the cron command.
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* Comma separated lists of integers and the character '*' are allowed.
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*
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* field lower and upper bound
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* ----- --------------
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* minute 0-59
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* hour 0-23
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* day of month 1-31
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* month 1-12
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* day of week 1-7
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*/
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protected array $cronCommandSections;
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/**
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* Timestamp of next execution date.
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* This value starts with 'now + 1 minute' if not set externally
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* by unit tests. After a call to calculateNextValue() it holds the timestamp of
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* the next execution date which matches the cron command restrictions.
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*/
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protected int $timestamp;
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/**
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* Constructor
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*
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* @param string $cronCommand The cron command can hold any combination documented as valid
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* @param bool|int $timestamp Optional start time, used in unit tests
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*/
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public function __construct(string $cronCommand, bool|int $timestamp = false)
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{
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$cronCommand = NormalizeCommand::normalize($cronCommand);
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// Explode cron command to sections
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$this->cronCommandSections = GeneralUtility::trimExplode(' ', $cronCommand);
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// Initialize the values with the starting time
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// This takes care that the calculated time is always in the future
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if ($timestamp === false) {
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$timestamp = strtotime('+1 minute');
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} else {
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$timestamp += 60;
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}
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$this->timestamp = $this->roundTimestamp($timestamp);
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}
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/**
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* Calculates the date of the next execution.
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*
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* @throws \RuntimeException
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*/
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public function calculateNextValue(): void
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{
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$newTimestamp = $this->getTimestamp();
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// Calculate next minute and hour field
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$loopCount = 0;
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while (true) {
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$loopCount++;
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// If there was no match within two days, cron command is invalid.
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// The second day is needed to catch the summertime leap in some countries.
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if ($loopCount > 2880) {
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throw new \RuntimeException('Unable to determine next execution timestamp: Hour and minute combination is invalid.', 1291494126);
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}
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if ($this->minuteAndHourMatchesCronCommand($newTimestamp)) {
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break;
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}
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$newTimestamp += 60;
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}
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$loopCount = 0;
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while (true) {
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$loopCount++;
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// A date must match within the next 4 years, this high number makes
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// sure leap year cron command configuration are caught.
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// If the loop runs longer than that, the cron command is invalid.
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if ($loopCount > 1464) {
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throw new \RuntimeException('Unable to determine next execution timestamp: Day of month, month and day of week combination is invalid.', 1291501280);
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}
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if ($this->dayMatchesCronCommand($newTimestamp)) {
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break;
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}
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$newTimestamp += $this->numberOfSecondsInDay($newTimestamp);
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}
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$this->timestamp = $newTimestamp;
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}
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/**
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* Get next timestamp
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*/
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public function getTimestamp(): int
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{
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return $this->timestamp;
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}
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/**
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* Get cron command sections. Array of strings, each containing either
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* a list of comma separated integers or *
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*/
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public function getCronCommandSections(): array
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{
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return $this->cronCommandSections;
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}
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/**
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* Determine if current timestamp matches minute and hour cron command restriction.
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*/
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protected function minuteAndHourMatchesCronCommand(int $timestamp): bool
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{
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$minute = (int)date('i', $timestamp);
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$hour = (int)date('G', $timestamp);
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$commandMatch = false;
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if ($this->isInCommandList($this->cronCommandSections[0], $minute) && $this->isInCommandList($this->cronCommandSections[1], $hour)) {
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$commandMatch = true;
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}
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return $commandMatch;
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}
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/**
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* Determine if current timestamp matches day of month, month and day of week
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* cron command restriction
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*/
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protected function dayMatchesCronCommand(int $timestamp): bool
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{
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$dayOfMonth = (int)date('j', $timestamp);
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$month = (int)date('n', $timestamp);
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$dayOfWeek = (int)date('N', $timestamp);
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$isInDayOfMonth = $this->isInCommandList($this->cronCommandSections[2], $dayOfMonth);
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$isInMonth = $this->isInCommandList($this->cronCommandSections[3], $month);
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$isInDayOfWeek = $this->isInCommandList($this->cronCommandSections[4], $dayOfWeek);
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// Quote from vixiecron:
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// Note: The day of a command's execution can be specified by two fields — day of month, and day of week.
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// If both fields are restricted (i.e., aren't *), the command will be run when either field
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// matches the current time. For example, `30 4 1,15 * 5' would cause
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// a command to be run at 4:30 am on the 1st and 15th of each month, plus every Friday.
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$isDayOfMonthRestricted = (string)$this->cronCommandSections[2] !== '*';
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$isDayOfWeekRestricted = (string)$this->cronCommandSections[4] !== '*';
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if (!$isInMonth) {
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return false;
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}
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// If both day-of-month and day-of-week are unrestricted, month match is enough.
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if (!$isDayOfMonthRestricted && !$isDayOfWeekRestricted) {
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return true;
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}
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// Otherwise, at least one restriction must match.
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return ($isInDayOfMonth && $isDayOfMonthRestricted) || ($isInDayOfWeek && $isDayOfWeekRestricted);
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}
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/**
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* Determine if a given number validates a cron command section. The given cron
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* command must be a 'normalized' list with only comma separated integers or '*'
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*/
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protected function isInCommandList(string $commandExpression, int $numberToMatch): bool
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{
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if ($commandExpression === '*') {
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$inList = true;
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} else {
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$inList = GeneralUtility::inList($commandExpression, (string)$numberToMatch);
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}
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return $inList;
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}
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/**
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* Helper method to calculate number of seconds in a day.
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*
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* This is not always 86400 (60*60*24) and depends on the timezone:
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* Some countries like Germany have a summertime / wintertime switch,
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* on every last sunday in march clocks are forwarded by one hour (set from 2:00 to 3:00),
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* and on last sunday of october they are set back one hour (from 3:00 to 2:00).
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* This shortens and lengthens the length of a day by one hour.
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*/
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protected function numberOfSecondsInDay(int $timestamp): int
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{
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$now = mktime(0, 0, 0, (int)date('n', $timestamp), (int)date('j', $timestamp), (int)date('Y', $timestamp));
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// Make sure to be in next day, even if day has 25 hours
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$nextDay = $now + 60 * 60 * 25;
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$nextDay = mktime(0, 0, 0, (int)date('n', $nextDay), (int)date('j', $nextDay), (int)date('Y', $nextDay));
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return $nextDay - $now;
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}
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/**
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* Round a timestamp down to full minute.
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*/
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protected function roundTimestamp(int $timestamp): int
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{
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return (int)(floor($timestamp / 60) * 60);
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}
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}
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@@ -0,0 +1,336 @@
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<?php
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declare(strict_types=1);
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/*
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* This file is part of the TYPO3 CMS project.
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*
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* It is free software; you can redistribute it and/or modify it under
|
||||
* the terms of the GNU General Public License, either version 2
|
||||
* of the License, or any later version.
|
||||
*
|
||||
* For the full copyright and license information, please read the
|
||||
* LICENSE.txt file that was distributed with this source code.
|
||||
*
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* The TYPO3 project - inspiring people to share!
|
||||
*/
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namespace TYPO3\CMS\Scheduler\CronCommand;
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use TYPO3\CMS\Core\Utility\MathUtility;
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/**
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* Validate and normalize a cron command.
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*
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* Special fields like three letter weekdays, ranges and steps are substituted
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* to a comma separated list of integers. Example:
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* '2-4 10-40/10 * mar * fri' will be normalized to '2,4 10,20,30,40 * * 3 1,2'
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*
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* @internal not part of TYPO3 Public API
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*/
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class NormalizeCommand
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{
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/**
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* Main API method: Get the cron command and normalize it.
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*
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* If no exception is thrown, the resulting cron command is validated
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* and consists of five whitespace separated fields, which are either
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* the letter '*' or a sorted, unique comma separated list of integers.
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*
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* @throws \InvalidArgumentException cron command is invalid or out of bounds
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*/
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public static function normalize(string $cronCommand): string
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{
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$cronCommand = trim($cronCommand);
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$cronCommand = self::convertKeywordsToCronCommand($cronCommand);
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return self::normalizeFields($cronCommand);
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}
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/**
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* Accept special cron command keywords and convert to standard cron syntax.
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* Allowed keywords: @yearly, @annually, @monthly, @weekly, @daily, @midnight, @hourly
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*/
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protected static function convertKeywordsToCronCommand(string $cronCommand): string
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{
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switch ($cronCommand) {
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case '@yearly':
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case '@annually':
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$cronCommand = '0 0 1 1 *';
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break;
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case '@monthly':
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$cronCommand = '0 0 1 * *';
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break;
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case '@weekly':
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$cronCommand = '0 0 * * 0';
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break;
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case '@daily':
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case '@midnight':
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$cronCommand = '0 0 * * *';
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break;
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case '@hourly':
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$cronCommand = '0 * * * *';
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break;
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}
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return $cronCommand;
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}
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/**
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* Normalize cron command field to list of integers or *
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*/
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protected static function normalizeFields(string $cronCommand): string
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{
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$fieldArray = self::splitFields($cronCommand);
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$fieldArray[0] = self::normalizeIntegerField($fieldArray[0]);
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$fieldArray[1] = self::normalizeIntegerField($fieldArray[1], 0, 23);
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$fieldArray[2] = self::normalizeIntegerField($fieldArray[2], 1, 31);
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$fieldArray[3] = self::normalizeMonthAndWeekdayField($fieldArray[3], true);
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$fieldArray[4] = self::normalizeMonthAndWeekdayField($fieldArray[4], false);
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return implode(' ', $fieldArray);
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}
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/**
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* Split a given cron command like '23 * * * *' to an array with five fields.
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*
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* @throws \InvalidArgumentException If splitted array does not contain five entries
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*/
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protected static function splitFields(string $cronCommand): array
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{
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$fields = explode(' ', $cronCommand);
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if (count($fields) !== 5) {
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throw new \InvalidArgumentException('Unable to split given cron command to five fields.', 1291227373);
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}
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return $fields;
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}
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/**
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* Normalize month field.
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*/
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protected static function normalizeMonthAndWeekdayField(string $expression, bool $isMonthField = true): string
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{
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if ((string)$expression === '*') {
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$fieldValues = '*';
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} else {
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// Fragment expression by , / and - and substitute three letter code of month and weekday to numbers
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$listOfCommaValues = explode(',', $expression);
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$fieldArray = [];
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foreach ($listOfCommaValues as $listElement) {
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if (str_contains($listElement, '/')) {
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[$left, $right] = explode('/', $listElement);
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if (str_contains($left, '-')) {
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[$leftBound, $rightBound] = explode('-', $left);
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$leftBound = self::normalizeMonthAndWeekday($leftBound, $isMonthField);
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$rightBound = self::normalizeMonthAndWeekday($rightBound, $isMonthField);
|
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$left = $leftBound . '-' . $rightBound;
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} else {
|
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if ((string)$left !== '*') {
|
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$left = self::normalizeMonthAndWeekday($left, $isMonthField);
|
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}
|
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}
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$fieldArray[] = $left . '/' . $right;
|
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} elseif (str_contains($listElement, '-')) {
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[$left, $right] = explode('-', $listElement);
|
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$left = self::normalizeMonthAndWeekday($left, $isMonthField);
|
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$right = self::normalizeMonthAndWeekday($right, $isMonthField);
|
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$fieldArray[] = $left . '-' . $right;
|
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} else {
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$fieldArray[] = self::normalizeMonthAndWeekday($listElement, $isMonthField);
|
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}
|
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}
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$fieldValues = implode(',', $fieldArray);
|
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}
|
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return $isMonthField ? self::normalizeIntegerField($fieldValues, 1, 12) : self::normalizeIntegerField($fieldValues, 1, 7);
|
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}
|
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|
||||
/**
|
||||
* Normalize integer field.
|
||||
*
|
||||
* @throws \InvalidArgumentException If field is invalid or out of bounds
|
||||
*/
|
||||
protected static function normalizeIntegerField(string $expression, int $lowerBound = 0, int $upperBound = 59): string
|
||||
{
|
||||
if ($expression === '*') {
|
||||
$fieldValues = '*';
|
||||
} else {
|
||||
$listOfCommaValues = explode(',', $expression);
|
||||
$fieldArray = [];
|
||||
foreach ($listOfCommaValues as $listElement) {
|
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if (str_contains($listElement, '/')) {
|
||||
[$left, $right] = explode('/', $listElement);
|
||||
if ($left === '*') {
|
||||
$leftList = self::convertRangeToListOfValues($lowerBound . '-' . $upperBound);
|
||||
} else {
|
||||
$leftList = self::convertRangeToListOfValues($left);
|
||||
}
|
||||
$fieldArray[] = self::reduceListOfValuesByStepValue($leftList . '/' . $right);
|
||||
} elseif (str_contains($listElement, '-')) {
|
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$fieldArray[] = self::convertRangeToListOfValues($listElement);
|
||||
} elseif (MathUtility::canBeInterpretedAsInteger($listElement)) {
|
||||
$fieldArray[] = $listElement;
|
||||
} elseif (strlen($listElement) === 2 && $listElement[0] === '0') {
|
||||
$fieldArray[] = (int)$listElement;
|
||||
} else {
|
||||
throw new \InvalidArgumentException('Unable to normalize integer field.', 1291429389);
|
||||
}
|
||||
}
|
||||
$fieldValues = implode(',', $fieldArray);
|
||||
}
|
||||
if ($fieldValues !== '*') {
|
||||
$fieldList = explode(',', $fieldValues);
|
||||
sort($fieldList);
|
||||
$fieldList = array_unique($fieldList);
|
||||
if (current($fieldList) < $lowerBound) {
|
||||
throw new \InvalidArgumentException('Lowest element in list is smaller than allowed.', 1291470084);
|
||||
}
|
||||
if (end($fieldList) > $upperBound) {
|
||||
throw new \InvalidArgumentException('An element in the list is higher than allowed.', 1291470170);
|
||||
}
|
||||
$fieldValues = implode(',', $fieldList);
|
||||
}
|
||||
return $fieldValues;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert a range of integers to a list: 4-6 results in a string '4,5,6'
|
||||
*
|
||||
* @param string $range integer-integer
|
||||
* @throws \InvalidArgumentException If range can not be converted to list
|
||||
*/
|
||||
protected static function convertRangeToListOfValues(string $range): string
|
||||
{
|
||||
if ($range === '') {
|
||||
throw new \InvalidArgumentException('Unable to convert range to list of values with empty string.', 1291234985);
|
||||
}
|
||||
$rangeArray = explode('-', $range);
|
||||
// Sanitize fields and cast to integer
|
||||
foreach ($rangeArray as $fieldNumber => $fieldValue) {
|
||||
if (!MathUtility::canBeInterpretedAsInteger($fieldValue)) {
|
||||
throw new \InvalidArgumentException('Unable to convert value to integer.', 1291237668);
|
||||
}
|
||||
$rangeArray[$fieldNumber] = (int)$fieldValue;
|
||||
}
|
||||
|
||||
$rangeArrayCount = count($rangeArray);
|
||||
if ($rangeArrayCount === 1) {
|
||||
$resultList = $rangeArray[0];
|
||||
} elseif ($rangeArrayCount === 2) {
|
||||
$left = $rangeArray[0];
|
||||
$right = $rangeArray[1];
|
||||
if ($left > $right) {
|
||||
throw new \InvalidArgumentException('Unable to convert range to list: Left integer must not be greater than right integer.', 1291237145);
|
||||
}
|
||||
$resultListArray = [];
|
||||
for ($i = $left; $i <= $right; $i++) {
|
||||
$resultListArray[] = $i;
|
||||
}
|
||||
$resultList = implode(',', $resultListArray);
|
||||
} else {
|
||||
throw new \InvalidArgumentException('Unable to convert range to list of values.', 1291234986);
|
||||
}
|
||||
return (string)$resultList;
|
||||
}
|
||||
|
||||
/**
|
||||
* Reduce a given list of values by step value.
|
||||
* Following a range with ``/<number>'' specifies skips of the number's value through the range.
|
||||
* 1-5/2 -> 1,3,5
|
||||
* 2-10/3 -> 2,5,8
|
||||
*
|
||||
* @return string comma-separated list of valid values
|
||||
* @throws \InvalidArgumentException if step value is invalid or if resulting list is empty
|
||||
*/
|
||||
protected static function reduceListOfValuesByStepValue(string $stepExpression): string
|
||||
{
|
||||
if ($stepExpression === '') {
|
||||
throw new \InvalidArgumentException('Unable to convert step values.', 1291234987);
|
||||
}
|
||||
$stepValuesAndStepArray = explode('/', $stepExpression);
|
||||
$stepValuesAndStepArrayCount = count($stepValuesAndStepArray);
|
||||
if ($stepValuesAndStepArrayCount > 2) {
|
||||
throw new \InvalidArgumentException('Unable to convert step values: Multiple slashes found.', 1291242168);
|
||||
}
|
||||
$left = $stepValuesAndStepArray[0];
|
||||
$right = $stepValuesAndStepArray[1] ?? '';
|
||||
if ($left === '') {
|
||||
throw new \InvalidArgumentException('Unable to convert step values: Left part of / is empty.', 1291414955);
|
||||
}
|
||||
if ($right === '') {
|
||||
throw new \InvalidArgumentException('Unable to convert step values: Right part of / is empty.', 1291414956);
|
||||
}
|
||||
if (!MathUtility::canBeInterpretedAsInteger($right)) {
|
||||
throw new \InvalidArgumentException('Unable to convert step values: Right part must be a single integer.', 1291414957);
|
||||
}
|
||||
$right = (int)$right;
|
||||
$leftArray = explode(',', $left);
|
||||
$validValues = [];
|
||||
$currentStep = $right;
|
||||
foreach ($leftArray as $leftValue) {
|
||||
if (!MathUtility::canBeInterpretedAsInteger($leftValue)) {
|
||||
throw new \InvalidArgumentException('Unable to convert step values: Left part must be a single integer or comma separated list of integers.', 1291414958);
|
||||
}
|
||||
if ($currentStep === 0) {
|
||||
$currentStep = $right;
|
||||
}
|
||||
if ($currentStep === $right) {
|
||||
$validValues[] = (int)$leftValue;
|
||||
}
|
||||
$currentStep--;
|
||||
}
|
||||
if (empty($validValues)) {
|
||||
throw new \InvalidArgumentException('Unable to convert step values: Result value list is empty.', 1291414959);
|
||||
}
|
||||
return implode(',', $validValues);
|
||||
}
|
||||
|
||||
/**
|
||||
* Dispatcher method for normalizeMonth and normalizeWeekday
|
||||
*/
|
||||
protected static function normalizeMonthAndWeekday(string $expression, bool $isMonth = true): string
|
||||
{
|
||||
$expression = $isMonth ? self::normalizeMonth($expression) : self::normalizeWeekday($expression);
|
||||
return (string)$expression;
|
||||
}
|
||||
|
||||
/**
|
||||
* Accept a string representation or integer number of a month like
|
||||
* 'jan', 'February', 01, ... and convert to normalized integer value between 1 and 12
|
||||
*
|
||||
* @throws \InvalidArgumentException If month string can not be converted to integer
|
||||
*/
|
||||
protected static function normalizeMonth(string $month): int
|
||||
{
|
||||
$timestamp = strtotime('2010-' . $month . '-01');
|
||||
// timestamp must be >= 2010-01-01 and <= 2010-12-01
|
||||
if (!$timestamp || $timestamp < strtotime('2010-01-01') || $timestamp > strtotime('2010-12-01')) {
|
||||
throw new \InvalidArgumentException('Unable to convert given month name.', 1291083486);
|
||||
}
|
||||
return (int)date('n', $timestamp);
|
||||
}
|
||||
|
||||
/**
|
||||
* Accept a string representation or integer number of a weekday like
|
||||
* 'mon', 'Friday', 3, ... and convert to normalized integer value between 1 and 7
|
||||
*
|
||||
* @throws \InvalidArgumentException If weekday string can not be converted
|
||||
*/
|
||||
protected static function normalizeWeekday(string $weekday): int
|
||||
{
|
||||
$normalizedWeekday = false;
|
||||
// 0 (sunday) -> 7
|
||||
if ($weekday === '0') {
|
||||
$weekday = 7;
|
||||
}
|
||||
if ($weekday >= 1 && $weekday <= 7) {
|
||||
$normalizedWeekday = (int)$weekday;
|
||||
}
|
||||
if (!$normalizedWeekday) {
|
||||
// Convert string representation like 'sun' to integer
|
||||
$timestamp = strtotime('next ' . $weekday, (int)mktime(0, 0, 0, 1, 1, 2010));
|
||||
if (!$timestamp || $timestamp < strtotime('2010-01-01') || $timestamp > strtotime('2010-01-08')) {
|
||||
throw new \InvalidArgumentException('Unable to convert given weekday name.', 1291163589);
|
||||
}
|
||||
$normalizedWeekday = (int)date('N', $timestamp);
|
||||
}
|
||||
return $normalizedWeekday;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user