Zabbix

/*

** Zabbix

** Copyright (C) 2001-2023 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.

**/

​

#include "eval.h"

​

#include "zbxexpr.h"

#include "zbxstr.h"

​

/* The tag expression token is virtual token used during item query filter processing. */

#define ZBX_EVAL_TOKEN_TAG_EXPRESSION       (1000)

​

/******************************************************************************

 *                                                                            *

 * Purpose: parse item query /host/key?[filter] into host, key and filter     *

 *          components                                                        *

 *                                                                            *

 * Parameters: str   - [IN] the item query                                    *

 *             len   - [IN] the query length                                  *

 *             query - [IN] the parsed item query                             *

 *                                                                            *

 * Return value: The number of parsed characters.                             *

 *                                                                            *

 ******************************************************************************/

size_t  zbx_eval_parse_query(const char *str, size_t len, zbx_item_query_t *query)

{

    size_t      n;

    const char  *host, *key, *filter;

​

    if (0 == (n = eval_parse_query(str, &host, &key, &filter)) || n != len)

        return 0;

​

    query->host = (host != key - 1 ? zbx_substr(host, 0, key - host - 2) : NULL);

​

    if (NULL != filter)

    {

        query->key = zbx_substr(key, 0, (filter - key) - 3);

        query->filter = zbx_substr(filter, 0, (str + len - filter) - 2);

    }

    else

    {

        query->key = zbx_substr(key, 0, (str + len - key) - 1);

        query->filter = NULL;

    }

​

    return n;

}

​