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113 lines
3.1 KiB
113 lines
3.1 KiB
<?php
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/*
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** Zabbix
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** Copyright (C) 2001-2023 Zabbix SIA
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**/
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/**
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* A parser for flexible intervals.
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*/
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class CFlexibleIntervalParser extends CParser {
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private $simple_interval_parser;
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private $time_period_parser;
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private $update_interval;
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private $time_period;
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private $options = [
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'usermacros' => false,
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'lldmacros' => false
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];
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public function __construct($options = []) {
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if (array_key_exists('usermacros', $options)) {
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$this->options['usermacros'] = $options['usermacros'];
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}
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if (array_key_exists('lldmacros', $options)) {
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$this->options['lldmacros'] = $options['lldmacros'];
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}
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$this->simple_interval_parser = new CSimpleIntervalParser([
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'usermacros' => $this->options['usermacros'],
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'lldmacros' => $this->options['lldmacros']
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]);
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$this->time_period_parser = new CTimePeriodParser([
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'usermacros' => $this->options['usermacros'],
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'lldmacros' => $this->options['lldmacros']
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]);
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}
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/**
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* Parse the given flexible interval. The source string can contain macros separated by a forward slash.
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*
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* (simple_interval|{$M}|{#M})/(time_period|{$M}|{#M})
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*
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* @param string $source Source string that needs to be parsed.
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* @param int $pos Position offset.
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*/
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public function parse($source, $pos = 0) {
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$this->length = 0;
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$this->match = '';
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$this->update_interval = '';
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$this->time_period = '';
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$p = $pos;
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if ($this->simple_interval_parser->parse($source, $p) == self::PARSE_FAIL) {
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return self::PARSE_FAIL;
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}
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$update_interval = $this->simple_interval_parser->getMatch();
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$p += $this->simple_interval_parser->getLength();
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if (!isset($source[$p]) || $source[$p] !== '/') {
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return self::PARSE_FAIL;
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}
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$p++;
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if ($this->time_period_parser->parse($source, $p) == self::PARSE_FAIL) {
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return self::PARSE_FAIL;
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}
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$this->update_interval = $update_interval;
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$this->time_period = $this->time_period_parser->getMatch();
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$p += $this->time_period_parser->getLength();
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$this->length = $p - $pos;
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$this->match = substr($source, $pos, $this->length);
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return isset($source[$p]) ? self::PARSE_SUCCESS_CONT : self::PARSE_SUCCESS;
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}
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/**
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* Returns matched update interval. Can contain macro.
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*
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* @return string
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*/
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public function getUpdateInterval() {
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return $this->update_interval;
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}
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/**
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* Returns matched time period. Can contain macro.
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*
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* @return string
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*/
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public function getTimePeriod() {
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return $this->time_period;
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}
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}
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