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/*****************************************************************************
*
* MODULE: DBF driver
*
* AUTHOR(S): Radim Blazek
*
* PURPOSE: Simple driver for reading and writing dbf files
*
* COPYRIGHT: (C) 2000 by the GRASS Development Team
*
* This program is free software under the GNU General Public
* License (>=v2). Read the file COPYING that comes with GRASS
* for details.
*
*****************************************************************************/
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <gis.h>
#include <dbmi.h>
#include "globals.h"
#include "proto.h"
int
db__driver_open_database (handle)
dbHandle *handle;
{
char *name;
int len;
dbConnection connection;
char buf[1024];
DIR *dir;
struct dirent *ent;
char **tokens;
int no_tokens, n;
db.name[0] = '\0';
db.tables = NULL;
db.atables = 0;
db.ntables = 0;
db_get_connection( &connection );
name = db_get_handle_dbname(handle);
/* if name is empty use connection.databaseName*/
if( strlen(name) == 0 )
{
name = connection.databaseName;
}
strcpy ( db.name, name );
/* open database dir and read table ( *.dbf files ) names
* to structure */
/* parse variables in db.name if present */
if ( db.name[0] == '$' )
{
tokens = G_tokenize (db.name, "/");
no_tokens=G_number_of_tokens(tokens);
db.name[0] = '\0'; /* re-init */
for (n = 0; n < no_tokens ; n++)
{
if ( tokens[n][0] == '$' )
{
G_strchg(tokens[n],'$', ' ' );
G_chop(tokens[n]);
strcat(db.name, G__getenv(tokens[n]) );
}
else
strcat(db.name, tokens[n]);
strcat(db.name, "/");
}
G_free_tokens(tokens);
}
dir = opendir(db.name);
if (dir == NULL)
{
append_error ( "Cannot open dbf database: %s\n", name );
report_error( );
return DB_FAILED;
}
while ( ( ent = readdir (dir) ) )
{
len = strlen ( ent->d_name ) - 4;
if ( (len > 0) && ( G_strcasecmp ( ent->d_name + len, ".dbf") == 0) )
{
strcpy ( buf, ent->d_name );
buf[len] = '\0';
add_table ( buf, ent->d_name );
}
}
closedir ( dir );
return DB_OK;
}
int
db__driver_close_database()
{
int i;
for ( i = 0; i < db.ntables; i++)
{
save_table (i);
free_table (i);
}
free ( db.tables );
return DB_OK;
}
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