Dbxgoto()

PURPOSE

go to specified record number and reposition keys in index tag

SYNOPSIS

#include "dbl.h"
 
	int	dbxgoto(dbx, recno)
 
	<input parameters>
	char	*dbx;		/* Tagged index file descriptor	*/
	long	recno;		/* Record number to go to		*/
 
 
	<output parameters>
	none

RETURN VALUE

The dbxgoto() function returns for success, or < 0 if an error occurs. See the section on return code values for a detailed list of return codes.

DESCRIPTION

The dbxgoto() function will go to the specified record number in the table associated with the tagged file. The record number specified becomes the current record and the index tag is repositioned.

EXAMPLE

The following example checks how many records are in the table, then goes to the last physical record in the table.

#include <stdio.h>
#include "dbl.h"		/* Recital/Library include file		*/
#include "dblproto.h"		/* Recital/Library prototype file	*/
 
	static	dBFIELD fields[6] = {
		"VESSEL",	'C',	18,	0,	0,
		"LAT",	'N',	4,	1,	0,
		"LONG",	'N',	4,	1,	0,
		"AMOUNT",	'N',	10,	0,	0,
		"DATE",	'D',	8,	0,	0,
		"FLAG",	'C',	9,	0,	0
	};
 
	static void errorproc(
		char	*func,
		char	*str,
		int	rc);
 
	main()
	{
	int	rc; 		/* Return Code for error handling	*/
	char	*dbf; 		/* File descriptor for table		*/
	char	*dbx; 		/* File descriptor for tagged index	*/
	long	db_size;	/* Size of table variable		*/
 
	rc = dbdcache(100);
	errorproc("dbdcache()","table cache specified.", rc);
	rc = dbicache(100);
	errorproc("dbicache()", "index cache specified.", rc);
	rc = dbfilemode(1,0);
	rc = dbopen("shipwreck.dbf", &dbf);
	errorproc("dbopen()","table opened in shared mode.", rc);
 
	rc = dbsize(dbf, &db_size);
	errorproc("dbsize()", "size retrieved.", rc);
	printf("t	  No. of Records: t%dn", db_size);
 
	rc = dbxgoto(dbx, db_size);
	errorproc("dbxgoto()", "gone to last physical record in table.", rc);
 
	rc = dbxclose(dbx);
	errorproc("dbxclose()", "tagged index closed.", rc);
	rc = dbclose(dbf);
	errorproc("dbclose()", "table closed.", rc);
 
	exit(0);
}
 
	static void errorproc(func, str, rc)
	char	*func;
	char	*str;
	int	rc;
{
	if ( rc != SUCCESS ) {
	printf("n  Error performing function %s -> %dn", func, rc);
	exit(1);
	}
	printf("Function: t%s, t%s - Okn", func, str);
	return;
}

SEE ALSO

dbxfwd(), dbxrewind()