c_list_drivers.c

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#include <grass/dbmi.h>

const char *db_list_drivers(void)
{
    dbDbmscap *list, *cur;
    dbString drivernames;

    db_init_string(&drivernames);

    /* read the dbmscap info */
    if (NULL == (list = db_read_dbmscap()))
        return NULL;
    else {
        /* build the comma separated string of existing drivers */
        for (cur = list; cur; cur = cur->next) {
            if (cur->driverName == '\0')
                break;
            else {
                if (cur != list)
                    db_append_string(&drivernames, ",");
                db_append_string(&drivernames, cur->driverName);
            }
        }
    }

    return db_get_string(&drivernames);
}