ret_codes.c

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#include <stdlib.h>
#include <grass/dbmi.h>
#include "macros.h"

int db__send_success()
{
    DB_SEND_INT(DB_OK);
    return DB_OK;
}

int db__send_failure()
{
    DB_SEND_INT(DB_FAILED);
    DB_SEND_C_STRING(db_get_error_msg());
    return DB_OK;
}

int db__recv_return_code(int *ret_code)
{
    dbString err_msg;

    /* get the return code first */
    DB_RECV_INT(ret_code);

    /* if OK, we're done here */
    if (*ret_code == DB_OK)
        return DB_OK;

    /* should be DB_FAILED */
    if (*ret_code != DB_FAILED) {
        db_protocol_error();
        return DB_PROTOCOL_ERR;
    }
    /* get error message from driver */
    db_init_string(&err_msg);
    DB_RECV_STRING(&err_msg);

    db_error(db_get_string(&err_msg));
    db_free_string(&err_msg);

    return DB_OK;
}