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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1998-2010. 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"
#include "erl_interface.h"
/*
* This file is actually part of the erl_interface library,
* not the newer 'ei' library. The header file is still in "ei.h"
*/
/* FIXME: is this to be completed? */
#if (0)
int ei_decode_term(const char *buf, int *index, void *t)
{
const char *s = buf + *index;
const char *s0 = s;
if (t) {
ETERM *tmp;
/* this decodes and advances s */
if (!(tmp = erl_decode_buf((unsigned char **)&s))) return -1;
*(ETERM **)t = tmp;
*index += s - s0;
return 0;
}
else {
int tmpindex = *index;
long ttype;
int arity;
int i;
/* these are all the external types */
switch ((ttype = get8(s))) {
case ERL_SMALL_INTEGER_EXT:
case ERL_INTEGER_EXT:
case ERL_SMALL_BIG_EXT:
return ei_decode_long(buf,index,NULL);
case ERL_FLOAT_EXT:
case NEW_FLOAT_EXT:
return ei_decode_double(buf,index,NULL);
case ERL_ATOM_EXT:
return ei_decode_atom(buf,index,NULL);
case ERL_REFERENCE_EXT:
case ERL_NEW_REFERENCE_EXT:
return ei_decode_ref(buf,index,NULL);
case ERL_PORT_EXT:
return ei_decode_port(buf,index,NULL);
case ERL_PID_EXT:
return ei_decode_pid(buf,index,NULL);
case ERL_SMALL_TUPLE_EXT:
case ERL_LARGE_TUPLE_EXT:
if (ei_decode_tuple_header(buf,index,&arity) < 0)
return -1;
for (i=0; i<arity; i++) {
if (ei_decode_term(buf,index,NULL)) {
/* restore possibly changed index before returning */
*index = tmpindex;
return -1;
}
}
return 0;
case ERL_STRING_EXT:
return ei_decode_string(buf,index,NULL);
case ERL_LIST_EXT:
case ERL_NIL_EXT:
if (ei_decode_list_header(buf,index,&arity) < 0)
return -1;
if (arity) {
for (i=0; i<arity; i++) {
if (ei_decode_term(buf,index,NULL) < 0) {
/* restore possibly changed index before returning */
*index = tmpindex;
return -1;
}
}
if (ei_decode_list_header(buf,index,&arity) < 0) {
*index = tmpindex;
return -1;
}
}
return 0;
case ERL_BINARY_EXT:
return ei_decode_binary(buf,index,NULL,NULL);
case ERL_LARGE_BIG_EXT:
default:
break;
}
}
return -1;
}
#else
int ei_decode_term(const char *buf, int *index, void *t)
{
const char *s = buf + *index;
const char *s0 = s;
ETERM *tmp;
/* this decodes and advances s */
if (!(tmp = erl_decode_buf((unsigned char **)&s))) return -1;
if (t) *(ETERM **)t = tmp;
else erl_free_term(tmp);
*index += s - s0;
return 0;
}
#endif
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