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/* This file is part of the YAZ toolkit.
* Copyright (C) Index Data
* See the file LICENSE for details.
*/
/**
* \file odr_null.c
* \brief Implements ODR NULL codec
*/
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include "odr-priv.h"
/*
* Top level null en/decoder.
* Returns 1 on success, 0 on error.
*/
int odr_null(ODR o, Odr_null **p, int opt, const char *name)
{
int res, cons = 0;
if (o->error)
return 0;
if (o->op->t_class < 0)
{
o->op->t_class = ODR_UNIVERSAL;
o->op->t_tag = ODR_NULL;
}
res = ber_tag(o, p, o->op->t_class, o->op->t_tag, &cons, opt, name);
if (res < 0)
return 0;
if (!res)
return odr_missing(o, opt, name);
if (o->direction == ODR_PRINT)
{
odr_prname(o, name);
odr_printf(o, "NULL\n");
return 1;
}
if (cons)
{
#ifdef ODR_STRICT_NULL
odr_seterror(OPROTO, 42);
return 0;
#else
/* Warning: Bad NULL */
#endif
}
if (o->direction == ODR_DECODE)
*p = odr_nullval();
return ber_null(o);
}
/*
* Local variables:
* c-basic-offset: 4
* c-file-style: "Stroustrup"
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
*/
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