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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1998-2009. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#include "eidef.h"
#include "eiext.h"
#include "putget.h"
int ei_decode_tuple_header(const char *buf, int *index, int *arity)
{
const char *s = buf + *index;
const char *s0 = s;
int i;
switch ((i=get8(s))) {
case ERL_SMALL_TUPLE_EXT:
if (arity) *arity = get8(s);
else s++;
break;
case ERL_LARGE_TUPLE_EXT:
if (arity) *arity = get32be(s);
else s += 4;
break;
default:
return -1;
}
*index += s-s0;
return 0;
}
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