Inquiry functions. More...

#include "grib2_int.h"
#include <stdarg.h>

Functions
	EXTERN_MUTEX (m)
	If pthreads are enabled, use externally-defined mutex for thread-safety.

int	g2c_inq (int g2cid, int *num_msg)
	Learn about a GRIB2 file.

int	g2c_inq_dim (int g2cid, int msg_num, int prod_num, int dim_num, size_t len, char name, float *val)
	Learn about the one of the dimensions of a GRIB2 product.

int	g2c_inq_msg (int g2cid, int msg_num, unsigned char discipline, int num_fields, int num_local, short center, short subcenter, unsigned char master_version, unsigned char *local_version)
	Learn about a GRIB2 message.

int	g2c_inq_msg_time (int g2cid, int msg_num, unsigned char sig_ref_time, short year, unsigned char month, unsigned char day, unsigned char hour, unsigned char minute, unsigned char *second)
	Learn about the date/time information in a GRIB2 message.

int	g2c_inq_prod (int g2cid, int msg_num, int prod_num, int pds_template_len, int pds_template, int gds_template_len, int gds_template, int drs_template_len, int drs_template)
	Inquire about a product.

Variables
G2C_FILE_INFO_T	g2c_file [G2C_MAX_FILES+1]
	Global file information.

Detailed Description

Inquiry functions.

Author: Ed Hartnett

Date: 10/21/22

Definition in file g2cinq.c.

Function Documentation

◆ EXTERN_MUTEX()

EXTERN_MUTEX ( m )

If pthreads are enabled, use externally-defined mutex for thread-safety.

◆ g2c_inq()

int g2c_inq	(	int	g2cid,
		int *	num_msg
	)

Learn about a GRIB2 file.

Parameters

g2cid	ID of the opened file, as from g2c_open().
num_msg	Pointer that gets the number of messages in the file. Ignored if NULL.

Returns

G2C_NOERROR No error.
G2C_EBADID File ID not found.

Author: Ed Hartnett

Date: 10/21/22

Definition at line 31 of file g2cinq.c.

References G2C_EBADID, g2c_file, G2C_MAX_FILES, G2C_NOERROR, MUTEX_LOCK, MUTEX_UNLOCK, and g2c_file_info::num_messages.

◆ g2c_inq_dim()

int g2c_inq_dim	(	int	g2cid,
		int	msg_num,
		int	prod_num,
		int	dim_num,
		size_t *	len,
		char *	name,
		float *	val
	)

Learn about the one of the dimensions of a GRIB2 product.

Parameters

g2cid	ID of the opened file, as from g2c_open().
msg_num	Number of the message in the file, starting with the first message as 0.
prod_num	Product number.
dim_num	Dimension number, with the first dimension as 0.
len	Pointer that gets the length of this dimension. Ignored if NULL.
name	Pointer that gets the name of this dimension. Must have memory of size G2C_MAX_NAME. Ignored if NULL.
val	Pointer that gets array of dimension values, of length len. Ignored if NULL.

Returns

G2C_NOERROR No error.
G2C_EBADID File ID not found.
G2C_ENOMSG Message not found.
G2C_ENOPRODUCT Product not found.
G2C_ENOSECTION GDS not found.

Author: Ed Hartnett

Date: 10/21/22

Definition at line 328 of file g2cinq.c.

References G2C_EBADID, G2C_ENOMSG, G2C_ENOPRODUCT, G2C_ENOSECTION, g2c_file, G2C_MAX_FILES, G2C_MAX_NAME, G2C_NOERROR, g2c_dim_info::len, g2c_message_info::msg_num, MUTEX_LOCK, g2c_dim_info::name, g2c_message_info::next, g2c_section_info::next, g2c_section_info::prev, g2c_message_info::sec, g2c_section_info::sec_info, g2c_section_info::sec_num, and g2c_dim_info::value.

◆ g2c_inq_msg()

int g2c_inq_msg	(	int	g2cid,
		int	msg_num,
		unsigned char *	discipline,
		int *	num_fields,
		int *	num_local,
		short *	center,
		short *	subcenter,
		unsigned char *	master_version,
		unsigned char *	local_version
	)

Learn about a GRIB2 message.

Parameters

g2cid	ID of the opened file, as from g2c_open().
msg_num	Number of the message in the file, starting with the first message as 0.
discipline	Pointer that gets the discipline from the message. Ignored if NULL.
num_fields	Pointer that gets the number of fields in the message. Ignored if NULL.
num_local	Pointer that gets the number of local sections in the message. Ignored if NULL.
center	Pointer that gets the code for the producing center from the message. Ignored if NULL.
subcenter	Pointer that gets the code for the producing subcenter from the message. Ignored if NULL.
master_version	Pointer that gets the master version from the message. Ignored if NULL.
local_version	Pointer that gets the local version from the message. Ignored if NULL.

Returns

G2C_NOERROR No error.
G2C_EBADID File ID not found.
G2C_ENOMSG Message not found.

Author: Ed Hartnett

Date: 10/21/22

Definition at line 86 of file g2cinq.c.

References g2c_message_info::center, g2c_message_info::discipline, G2C_EBADID, G2C_ENOMSG, g2c_file, G2C_MAX_FILES, G2C_NOERROR, g2c_message_info::local_version, g2c_message_info::master_version, g2c_message_info::msg_num, g2c_message_info::next, g2c_message_info::num_fields, g2c_message_info::num_local, and g2c_message_info::subcenter.

◆ g2c_inq_msg_time()

int g2c_inq_msg_time	(	int	g2cid,
		int	msg_num,
		unsigned char *	sig_ref_time,
		short *	year,
		unsigned char *	month,
		unsigned char *	day,
		unsigned char *	hour,
		unsigned char *	minute,
		unsigned char *	second
	)

Learn about the date/time information in a GRIB2 message.

Parameters

g2cid	ID of the opened file, as from g2c_open().
msg_num	Number of the message in the file, starting with the first message as 0.
sig_ref_time	Pointer that gets Significane of reference time value from the message. Ignored if NULL.
year	Pointer that gets the year from the message. Ignored if NULL.
month	Pointer that gets the month from the message. Ignored if NULL.
day	Pointer that gets the day from the message. Ignored if NULL.
hour	Pointer that gets the hour from the message. Ignored if NULL.
minute	Pointer that gets the minute from the message. Ignored if NULL.
second	Pointer that gets the seconds from the message. Ignored if NULL.

Returns

G2C_NOERROR No error.
G2C_EBADID File ID not found.
G2C_ENOMSG Message not found.

Author: Ed Hartnett

Date: 10/22/22

Definition at line 149 of file g2cinq.c.

References g2c_message_info::day, G2C_EBADID, G2C_ENOMSG, g2c_file, G2C_MAX_FILES, G2C_NOERROR, g2c_message_info::hour, g2c_message_info::minute, g2c_message_info::month, g2c_message_info::msg_num, g2c_message_info::next, g2c_message_info::second, g2c_message_info::sig_ref_time, and g2c_message_info::year.

◆ g2c_inq_prod()

int g2c_inq_prod	(	int	g2cid,
		int	msg_num,
		int	prod_num,
		int *	pds_template_len,
		int *	pds_template,
		int *	gds_template_len,
		int *	gds_template,
		int *	drs_template_len,
		int *	drs_template
	)

Inquire about a product.

Parameters

g2cid	File ID.
msg_num	Message number.
prod_num	Product number.
pds_template_len	PDS template length. Ignored if NULL.
pds_template	The PDS template. Ignored if NULL.
gds_template_len	GDS template length. Ignored if NULL.
gds_template	The GDS template. Ignored if NULL.
drs_template_len	The DRS template length. Ignored if NULL.
drs_template	The DRS template. Ignored if NULL.

Returns

G2C_NOERROR No error.
G2C_EBADID File ID not found.
G2C_ENOMSG Message not found.
G2C_ENOPRODUCT Product not found.
G2C_ENOSECTION Section not found.

Author: Ed Hartnett

Date: 10/21/22

Definition at line 207 of file g2cinq.c.

References G2C_EBADID, G2C_ENOMSG, G2C_ENOPRODUCT, G2C_ENOSECTION, g2c_file, G2C_MAX_FILES, G2C_NOERROR, g2c_message_info::msg_num, MUTEX_LOCK, MUTEX_UNLOCK, g2c_message_info::next, g2c_section_info::next, g2c_section_info::prev, g2c_message_info::sec, g2c_section_info::sec_info, g2c_section_info::sec_num, g2c_section_info::template, and g2c_section_info::template_len.

Variable Documentation

◆ g2c_file

G2C_FILE_INFO_T g2c_file[G2C_MAX_FILES+1]

extern

Global file information.

Definition at line 10 of file g2cfile.c.

Referenced by g2c_inq(), g2c_inq_dim(), g2c_inq_msg(), g2c_inq_msg_time(), and g2c_inq_prod().

Functions

Variables

Detailed Description

Function Documentation

◆ EXTERN_MUTEX()

◆ g2c_inq()

◆ g2c_inq_dim()

◆ g2c_inq_msg()

◆ g2c_inq_msg_time()

◆ g2c_inq_prod()

Variable Documentation

◆ g2c_file