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<?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 absolute and relative time used in the date-time inputs.
*/
class CRangeTimeParser extends CParser {
const ZBX_TIME_UNKNOWN = 0;
const ZBX_TIME_ABSOLUTE = 1;
const ZBX_TIME_RELATIVE = 2;
/**
* @var int $time_type
*/
private $time_type;
/**
* @var CRelativeTimeParser
*/
private $relative_time_parser;
/**
* @var CAbsoluteTimeParser
*/
private $absolute_time_parser;
public function __construct() {
$this->relative_time_parser = new CRelativeTimeParser();
$this->absolute_time_parser = new CAbsoluteTimeParser();
}
/**
* Parse the given period.
*
* @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 = '';
$this->time_type = self::ZBX_TIME_UNKNOWN;
$p = $pos;
if ($this->relative_time_parser->parse($source, $p) != self::PARSE_FAIL) {
$p += $this->relative_time_parser->getLength();
$this->time_type = self::ZBX_TIME_RELATIVE;
}
elseif ($this->absolute_time_parser->parse($source, $p) != self::PARSE_FAIL) {
$p += $this->absolute_time_parser->getLength();
$this->time_type = self::ZBX_TIME_ABSOLUTE;
}
else {
return self::PARSE_FAIL;
}
$this->length = $p - $pos;
$this->match = substr($source, $pos, $this->length);
return isset($source[$p]) ? self::PARSE_SUCCESS_CONT : self::PARSE_SUCCESS;
}
public function getTimeType() {
return $this->time_type;
}
/**
* Get DateTime object with its value set to either start or end of the period derived from the date/time specified.
*
* @param bool $is_start
* @param DateTimeZone|null $timezone
*
* @return DateTime|null
*/
public function getDateTime(bool $is_start, ?DateTimeZone $timezone = null): ?DateTime {
switch ($this->time_type) {
case self::ZBX_TIME_ABSOLUTE:
return $this->absolute_time_parser->getDateTime($is_start, $timezone);
case self::ZBX_TIME_RELATIVE:
return $this->relative_time_parser->getDateTime($is_start, $timezone);
default:
return null;
}
}
}
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