From 84adefa331c4159d432d22840663c38f155cd4c1 Mon Sep 17 00:00:00 2001
From: Erlang/OTP <otp@erlang.org>
Date: Fri, 20 Nov 2009 14:54:40 +0000
Subject: The R13B03 release.

---
 lib/erl_interface/src/decode/decode_intlist.c | 82 +++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 lib/erl_interface/src/decode/decode_intlist.c

(limited to 'lib/erl_interface/src/decode/decode_intlist.c')

diff --git a/lib/erl_interface/src/decode/decode_intlist.c b/lib/erl_interface/src/decode/decode_intlist.c
new file mode 100644
index 0000000000..65552a4ed4
--- /dev/null
+++ b/lib/erl_interface/src/decode/decode_intlist.c
@@ -0,0 +1,82 @@
+/*
+ * %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%
+ */
+/* 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; 
+}
-- 
cgit v1.2.3