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<?php declare(strict_types = 0);
/*
** 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/>.
**/
/**
* Class is used to parse <sec|#num>:<time_shift> trigger parameter.
*/
class CPeriodParser extends CParser {
private $simple_interval_parser;
private $relative_time_parser;
/**
* An options array.
*
* Supported options:
* 'usermacros' => false Enable user macros usage in the periods.
* 'lldmacros' => false Enable low-level discovery macros usage in the periods.
*
* @var array
*/
protected $options = [
'usermacros' => false,
'lldmacros' => false
];
/**
* @var string
*/
private $sec_num = '';
/**
* @var string
*/
private $timeshift = '';
/**
* @param array $options
* @param bool $options['lldmacros']
*/
public function __construct(array $options) {
$this->options = $options + $this->options;
$this->simple_interval_parser = new CSimpleIntervalParser([
'usermacros' => $this->options['usermacros'],
'lldmacros' => $this->options['lldmacros'],
'with_year' => true
]);
$this->relative_time_parser = new CRelativeTimeParser([
'usermacros' => $this->options['usermacros'],
'lldmacros' => $this->options['lldmacros']
]);
}
/**
* Parse period.
*
* @param string $source
* @param int $pos
*
* @return int
*/
public function parse($source, $pos = 0): int {
$this->match = '';
$this->length = 0;
$this->sec_num = '';
$this->timeshift = '';
$p = $pos;
$sec_num = '';
$timeshift = '';
if (preg_match('/^#[0-9]+/', substr($source, $p), $matches)) {
$sec_num = $matches[0];
$p += strlen($matches[0]);
}
elseif ($this->simple_interval_parser->parse($source, $p) !== self::PARSE_FAIL) {
$sec_num = $this->simple_interval_parser->match;
$p += $this->simple_interval_parser->length;
}
else {
return self::PARSE_FAIL;
}
if (isset($source[$p]) && $source[$p] === ':') {
if ($this->relative_time_parser->parse($source, $p + 1) !== self::PARSE_FAIL) {
$timeshift = $this->relative_time_parser->match;
$p += $this->relative_time_parser->length + 1;
}
}
$this->length = $p - $pos;
$this->match = substr($source, $pos, $this->length);
$this->sec_num = $sec_num;
$this->timeshift = $timeshift;
return isset($source[$p]) ? self::PARSE_SUCCESS_CONT : self::PARSE_SUCCESS;
}
/**
* Returns the first part of the period.
*
* @return string
*/
public function getSecNum(): string {
return $this->sec_num;
}
/**
* Returns the second part of the period.
*
* @return string
*/
public function getTimeshift(): string {
return $this->timeshift;
}
}
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