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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1998-2016. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
/* since Erlang sends int-lists as either lists or strings, this
* function can be used when the caller needs an array but doesn't
* know which type to decode
*/
#include "eidef.h"
#include "eiext.h"
#include "putget.h"
int ei_decode_intlist(const char *buf, int *index, long *a, int *count)
{
const unsigned char *s = (const unsigned char *)(buf + *index);
const unsigned char *s0 = s;
int idx;
int len;
int i;
switch (get8(s)) {
case ERL_STRING_EXT:
len = get16be(s);
/* transfer and cast chars one at a time into array */
if (a) {
for (i=0; i<len; i++) {
a[i] = (long)(s[i]);
}
}
if (count) *count = len;
s += len;
break;
case ERL_LIST_EXT:
len = get32be(s);
idx = 0;
if (a) {
for (i=0; i<len; i++) {
if (ei_decode_long((char*)s,&idx,a+i) < 0) {
if (count) *count = i;
return -1;
}
}
}
else {
for (i=0; i<len; i++) {
if (ei_decode_long((char*)s,&idx,NULL) < 0) {
if (count) *count = i;
return -1;
}
}
}
if (count) *count = len;
s += idx;
break;
default:
return -1;
}
*index += s-s0;
return 0;
}
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