default_name.c

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#include <stdlib.h>
#include <string.h>
#include <grass/gis.h>
#include <grass/dbmi.h>
#include <grass/glocale.h>

const char *db_get_default_driver_name(void)
{
    const char *drv;

    if ((drv = G__getenv2("DB_DRIVER", G_VAR_MAPSET)))
        return G_store(drv);

    return NULL;
}

const char *db_get_default_database_name(void)
{
    const char *drv;

    if ((drv = G__getenv2("DB_DATABASE", G_VAR_MAPSET)))
        return G_store(drv);

    return NULL;
}

const char *db_get_default_schema_name(void)
{
    const char *sch;

    if ((sch = G__getenv2("DB_SCHEMA", G_VAR_MAPSET)))
        return G_store(sch);

    return NULL;
}

const char *db_get_default_group_name(void)
{
    const char *gr;

    if ((gr = G__getenv2("DB_GROUP", G_VAR_MAPSET)))
        return G_store(gr);

    return NULL;
}

int db_set_default_connection(void)
{
    dbConnection connection;
    char buf[GPATH_MAX];

    G_debug(1,
            "Creating new default DB params with db_set_default_connection()");

    /* is this really needed ? */
    db_get_connection(&connection);

    if (strcmp(DB_DEFAULT_DRIVER, "dbf") == 0) {
        /* Set default values and create dbf db dir */

        connection.driverName = "dbf";
        connection.databaseName = "$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/";
        db_set_connection(&connection);

        sprintf(buf, "%s/%s/dbf", G_location_path(), G_mapset());
        G__make_mapset_element("dbf");
    }
    else if (strcmp(DB_DEFAULT_DRIVER, "sqlite") == 0) {
        /* Set default values and create dbf db dir */

        connection.driverName = "sqlite";
        /*
         * TODO: Use one DB for entire mapset (LFS problems?)
         *      or per-map DBs in $MASPET/vector/mapname/sqlite.db (how to set that here?)
         *      or $MAPSET/sqlite/mapname.sql as with dbf?
         */
        connection.databaseName =
            "$GISDBASE/$LOCATION_NAME/$MAPSET/sqlite.db";
        db_set_connection(&connection);
    }
    else
        G_fatal_error(_("Programmer error"));

    return DB_OK;
}