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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/erl_interface/src/decode/decode_version.c
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The R13B03 release.OTP_R13B03
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-rw-r--r--lib/erl_interface/src/decode/decode_version.c38
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diff --git a/lib/erl_interface/src/decode/decode_version.c b/lib/erl_interface/src/decode/decode_version.c
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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"
+
+/* remove version identifier from the start of the buffer */
+int ei_decode_version(const char *buf, int *index, int *version)
+{
+ const char *s = buf + *index;
+ const char *s0 = s;
+ int v;
+
+ v = get8(s);
+ if (version) *version = v;
+ if (v != ERL_VERSION_MAGIC)
+ return -1;
+
+ *index += s-s0;
+
+ return 0;
+}