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