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<?php |
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/** |
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* Platine Framework |
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* |
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* Platine Framework is a lightweight, high-performance, simple and elegant |
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* PHP Web framework |
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* |
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* This content is released under the MIT License (MIT) |
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* |
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* Copyright (c) 2020 Platine Framework |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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/** |
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* @file Cron.php |
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* |
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* The Cron expression parser class |
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* |
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* @package Platine\Framework\Task |
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* @author Platine Developers team |
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* @copyright Copyright (c) 2020 |
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* @license http://opensource.org/licenses/MIT MIT License |
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* @link http://www.iacademy.cf |
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* @version 1.0.0 |
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* @filesource |
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*/ |
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declare(strict_types=1); |
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namespace Platine\Framework\Task; |
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use InvalidArgumentException; |
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/** |
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* @class Cron |
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* @package Platine\Framework\Task |
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*/ |
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class Cron |
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{ |
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/** |
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* Parse the given cron expression and finds next execution time(stamp) |
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* @param string $expression |
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* 0 1 2 3 4 |
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* * * * * * |
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* - - - - - |
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* | | | | | |
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* | | | | +----- day of week (0 - 6) (Sunday=0) |
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* | | | +------- month (1 - 12) |
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* | | +--------- day of month (1 - 31) |
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* | +----------- hour (0 - 23) |
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* +------------- min (0 - 59) |
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* |
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* @param int $timestamp the after timestamp [default=current timestamp] |
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* @return int the Unix timestamp |
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*/ |
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public static function parse(string $expression, ?int $timestamp = null): int |
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{ |
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$cronExpression = trim($expression); |
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$cronRegex = '/^((\*(\/[0-9]+)?)|[0-9\-\,\/]+)\s+' |
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. '((\*(\/[0-9]+)?)|[0-9\-\,\/]+)\s+' |
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. '((\*(\/[0-9]+)?)|[0-9\-\,\/]+)\s+' |
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. '((\*(\/[0-9]+)?)|[0-9\-\,\/]+)\s+' |
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. '((\*(\/[0-9]+)?)|[0-9\-\,\/]+)$/i'; |
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if (!preg_match($cronRegex, $cronExpression)) { |
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throw new InvalidArgumentException(sprintf( |
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'Invalid cron expression [%s]', |
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$expression |
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)); |
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} |
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$crons = preg_split('/[\s]+/i', $cronExpression); |
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$start = time(); |
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if ($timestamp !== null) { |
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$start = $timestamp; |
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} |
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$dates = [ |
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'minutes' => self::parseNumber($crons[0], 0, 59), |
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'hours' => self::parseNumber($crons[1], 0, 23), |
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'dom' => self::parseNumber($crons[2], 1, 31), |
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'month' => self::parseNumber($crons[3], 1, 12), |
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'dow' => self::parseNumber($crons[4], 0, 6), |
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]; |
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// limited to time()+366 - no need |
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// to check more than 1 year ahead |
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$total = 60 * 60 * 24 * 366; |
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for ($i = 0; $i <= $total; $i += 60) { |
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$current = $start + $i; |
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if ( |
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in_array((int) date('j', $current), $dates['dom']) && |
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in_array((int) date('n', $current), $dates['month']) && |
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in_array((int) date('w', $current), $dates['dow']) && |
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in_array((int) date('G', $current), $dates['hours']) && |
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in_array((int) date('i', $current), $dates['minutes']) |
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) { |
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return $current; |
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} |
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} |
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return $start; |
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} |
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/** |
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* Parse and return a single cron style notation |
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* into numeric value |
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* @param string $expression |
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* @param int $min minimum possible value |
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* @param int $max maximum possible value |
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* @return array<int> |
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*/ |
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protected static function parseNumber(string $expression, int $min, int $max): array |
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{ |
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$result = []; |
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$values = explode(',', $expression); |
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foreach ($values as $value) { |
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$slashValues = explode('/', $value); |
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$step = $slashValues[1] ?? 1; |
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$minusValues = explode('-', $slashValues[0]); |
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$minimum = count($minusValues) === 2 ? $minusValues[0] |
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: ($slashValues[0] === '*' ? $min : $slashValues[0]); |
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$maximum = count($minusValues) === 2 ? $minusValues[1] |
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: ($slashValues[0] === '*' ? $max : $slashValues[0]); |
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for ($i = $minimum; $i <= $maximum; $i += $step) { |
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$result[$i] = intval($i); |
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} |
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} |
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ksort($result); |
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return $result; |
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} |
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} |
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platine-php /
framework
