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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_boolean.c
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The R13B03 release.OTP_R13B03
Diffstat (limited to 'lib/erl_interface/src/decode/decode_boolean.c')
-rw-r--r--lib/erl_interface/src/decode/decode_boolean.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/lib/erl_interface/src/decode/decode_boolean.c b/lib/erl_interface/src/decode/decode_boolean.c
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+++ b/lib/erl_interface/src/decode/decode_boolean.c
@@ -0,0 +1,57 @@
+/*
+ * %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 <string.h>
+#include "eidef.h"
+#include "eiext.h"
+#include "putget.h"
+
+/* c non-zero -> erlang "true" atom, otherwise "false" */
+int ei_decode_boolean(const char *buf, int *index, int *p)
+{
+ const char *s = buf + *index;
+ const char *s0 = s;
+ int len;
+ int t;
+
+ if (get8(s) != ERL_ATOM_EXT) return -1;
+
+ len = get16be(s);
+
+ switch (len) {
+ case 4:
+ /* typecast makes ansi happy */
+ if (strncmp((char*)s,"true",4)) return -1;
+ t = 1;
+ break;
+
+ case 5:
+ if (strncmp((char*)s,"false",5)) return -1;
+ t = 0;
+ break;
+
+ default:
+ return -1;
+ }
+
+ s += len;
+ if (p) *p = t;
+ *index += s-s0;
+
+ return 0;
+}