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.

**/

​

#ifndef ZABBIX_ZBXVARIANT_H

#define ZABBIX_ZBXVARIANT_H

​

#include "zbxalgo.h"

​

#define ZBX_INFINITY    (1.0 / 0.0) /* "Positive infinity" value used as a fatal error code */

#define ZBX_UNKNOWN (-1.0 / 0.0)    /* "Negative infinity" value used as a code for "Unknown" */

​

#define ZBX_UNKNOWN_STR     "ZBX_UNKNOWN"   /* textual representation of ZBX_UNKNOWN */

#define ZBX_UNKNOWN_STR_LEN ZBX_CONST_STRLEN(ZBX_UNKNOWN_STR)

​

ZBX_VECTOR_DECL(var, zbx_variant_t)

void    zbx_vector_var_clear_ext(zbx_vector_var_t *v);

​

typedef union

{

    zbx_uint64_t        ui64;

    double          dbl;

​

    /* null terminated string */

    char            *str;

​

    /* length prefixed (4 bytes) binary data */

    void            *bin;

​

    zbx_vector_var_t    *vector;

​

    /* null terminated error message */

    char            *err;

}

zbx_variant_data_t;

​

struct zbx_variant

{

    unsigned char       type;

    zbx_variant_data_t  data;

};

​

#define ZBX_VARIANT_NONE    0

#define ZBX_VARIANT_STR     1

#define ZBX_VARIANT_DBL     2

#define ZBX_VARIANT_UI64    3

#define ZBX_VARIANT_BIN     4

#define ZBX_VARIANT_VECTOR  5

#define ZBX_VARIANT_ERR     6

​

void        zbx_variant_clear(zbx_variant_t *value);

void        zbx_variant_set_none(zbx_variant_t *value);

void        zbx_variant_set_str(zbx_variant_t *value, char *text);

void        zbx_variant_set_dbl(zbx_variant_t *value, double value_dbl);

void        zbx_variant_set_ui64(zbx_variant_t *value, zbx_uint64_t value_ui64);

void        zbx_variant_set_bin(zbx_variant_t *value, void *value_bin);

void        zbx_variant_set_error(zbx_variant_t *value, char *error);

void        zbx_variant_set_dbl_vector(zbx_variant_t *value, zbx_vector_dbl_t *dbl_vector);

​

void        zbx_variant_copy(zbx_variant_t *value, const zbx_variant_t *source);

int     zbx_variant_set_numeric(zbx_variant_t *value, const char *text);

int     zbx_variant_convert(zbx_variant_t *value, int type);

​

const char  *zbx_get_variant_type_desc(unsigned char type);

const char  *zbx_variant_value_desc(const zbx_variant_t *value);

const char  *zbx_variant_type_desc(const zbx_variant_t *value);

​

int     zbx_variant_compare(const zbx_variant_t *value1, const zbx_variant_t *value2);

​

void        *zbx_variant_data_bin_create(const void *data, zbx_uint32_t size);

zbx_uint32_t    zbx_variant_data_bin_get(const void *bin, const void ** const data);

​

int     zbx_variant_to_value_type(zbx_variant_t *value, unsigned char value_type, char **errmsg);

​

void        zbx_variant_set_vector(zbx_variant_t *value, zbx_vector_var_t *vector);

int     zbx_vector_var_get_type(zbx_vector_var_t *v);