Zabbix

<?php declare(strict_types = 1);

/*

** Zabbix

** Copyright (C) 2001-2022 Zabbix SIA

**

** This program is free software; you can redistribute it and/or modify

** it under the terms of the GNU General Public License as published by

** the Free Software Foundation; either version 2 of the License, or

** (at your option) any later version.

**

** 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 General Public License for more details.

**

** You should have received a copy of the GNU General Public License

** along with this program; if not, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

​

/**

 * Class is used to parse a query in trigger function in form of "/host/key".

 */

class CQueryParser extends CParser {

​

    // Wildcard character to define host or item key.

    const HOST_ITEMKEY_WILDCARD = '*';

​

    private $host_name_parser;

    private $host_macro_parser;

    private $item_key_parser;

    private $filter_parser;

​

    /**

     * An options array.

     *

     * Supported options:

     *   'usermacros' => false    Enable user macros usage in filter expression.

     *   'lldmacros' => false     Enable low-level discovery macros usage in filter expression.

     *   'calculated' => false    Allow wildcards to be used in place of hostname and item key. Allow filter expression

     *                            for item.

     *   'host_macro' => false    Allow {HOST.HOST} macro as host name part in the query.

     *   'host_macro_n' => false  Allow {HOST.HOST} and {HOST.HOST<1-9>} macros as host name part in the query.

     *   'empty_host' => false    Allow empty hostname.

     *

     * @var array

     */

    private $options = [

        'usermacros' => false,

        'lldmacros' => false,

        'calculated' => false,

        'host_macro' => false,

        'host_macro_n' => false,

        'empty_host' => false

    ];

​

    /**

     * @var string

     */

    private $host = '';

​

    /**