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121 lines
2.8 KiB
121 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 ranges separated by a comma.
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*/
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class CRangesParser extends CParser {
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/**
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* Status code range parser.
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*
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* @var CRangeParser
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*/
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private $range_parser;
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/**
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* Array of ranges strings. Range value with suffix will be stored as string of calculated value, value "1K"
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* will be stored as "1024".
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*
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* @var array
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*/
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private $ranges = [];
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/**
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* Options to initialize other parsers.
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*
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* usermacros Allow usermacros in ranges.
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* lldmacros Allow lldmacros in ranges.
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* with_minus Allow negative ranges.
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* with_float Allow float number ranges.
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* with_suffix Allow number ranges with suffix, supported suffixes see CNumberParser::$suffixes.
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*
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* @var array
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*/
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private $options = [
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'usermacros' => false,
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'lldmacros' => false,
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'with_minus' => false,
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'with_float' => false,
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'with_suffix' => false
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];
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/**
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* @param array $options An array of options to initialize other parsers.
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*/
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public function __construct($options = []) {
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$this->options = $options + $this->options;
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$this->range_parser = new CRangeParser($this->options);
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}
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/**
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* Parse the given status codes separated by a comma.
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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->ranges = [];
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$p = $pos;
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while (true) {
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if ($this->range_parser->parse($source, $p) == self::PARSE_FAIL) {
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break;
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}
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$p += $this->range_parser->getLength();
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$this->ranges[] = $this->range_parser->getRange();
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if (!isset($source[$p]) || $source[$p] !== ',') {
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break;
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}
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$p++;
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}
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if ($p == $pos) {
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return self::PARSE_FAIL;
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}
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if ($source[$p - 1] === ',') {
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$p--;
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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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/**
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* Retrieve the status code ranges.
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*
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* @return array
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*/
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public function getRanges() {
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return $this->ranges;
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}
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}
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