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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 comma separated string of geographical coordinates and zoom level.
*
* Valid token must match one of following formats:
* - <latitude>,<longitude>,<zoom>
* - <latitude>,<longitude>
*/
class CGeomapCoordinatesParser extends CParser {
/**
* @var array
*/
public $result;
/**
* @param string $source
* @param int $pos
*
* @return int
*/
public function parse($source, $pos = 0) {
$this->length = 0;
$this->match = '';
$this->result = [];
$regex = '/^(?P<latitude>-?\d+(\.\d+)?),\s*(?P<longitude>-?\d+(\.\d+)?)(,(?P<zoom>\d+))?$/';
if (!preg_match($regex, substr($source, $pos), $matches)) {
return self::PARSE_FAIL;
}
if ((float) $matches['latitude'] < GEOMAP_LAT_MIN || (float) $matches['latitude'] > GEOMAP_LAT_MAX
|| (float) $matches['longitude'] < GEOMAP_LNG_MIN || (float) $matches['longitude'] > GEOMAP_LNG_MAX) {
return self::PARSE_FAIL;
}
$this->match = $matches[0];
$this->length = strlen($this->match);
$this->result = array_intersect_key($matches, array_flip(['latitude', 'longitude', 'zoom']));
return self::PARSE_SUCCESS;
}
}
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