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