c_rows.c

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

int db_get_num_rows(dbCursor * cursor)
{
    int nrows, ret_code;

    /* start the procedure call */
    db__set_protocol_fds(cursor->driver->send, cursor->driver->recv);
    DB_START_PROCEDURE_CALL(DB_PROC_ROWS);

    /* send the argument(s) to the procedure */
    DB_SEND_TOKEN(&cursor->token);

    /* get the return code for the procedure call */
    DB_RECV_RETURN_CODE(&ret_code);

    if (ret_code != DB_OK)
        return -1;

    /* get the results */
    DB_RECV_INT(&nrows);

    return nrows;
}