Zabbix

<?php

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;

** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

** See the GNU Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

​

/**

 * A parser for simple intervals.

 */

class CSimpleIntervalParser extends CParser {

​

    /**

     * @var array

     */

    private $macro_parsers = [];

​

    private $options = [

        'usermacros' => false,

        'lldmacros' => false,

        'negative' => false,

        'with_year' => false

    ];

​

    public function __construct($options = []) {

        $this->options = $options + $this->options;

​

        if ($this->options['usermacros']) {

            array_push($this->macro_parsers, new CUserMacroParser, new CUserMacroFunctionParser);

        }

        if ($this->options['lldmacros']) {

            array_push($this->macro_parsers, new CLLDMacroParser, new CLLDMacroFunctionParser);

        }

    }

​

    /**

     * Parse the given source string.

     *

     * 0..N[smhdwMy]|{$M}|{#M}|{{#M}.func()}

     *

     * @param string $source  Source string that needs to be parsed.

     * @param int    $pos     Position offset.

     */

    public function parse($source, $pos = 0) {

        $this->length = 0;

        $this->match = '';

​

        $minus = $this->options['negative'] ? '-?' : '';

        $p = $pos;

​

        if (preg_match(

            '/^('.$minus.'(0|[1-9][0-9]*)['.

            ($this->options['with_year'] ? ZBX_TIME_SUFFIXES_WITH_YEAR : ZBX_TIME_SUFFIXES).']?)/',

            substr($source, $p), $matches)