From e206ea0c5a68723bcfcfb2b192e319b1db6ce956 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Mon, 31 Dec 2012 18:37:07 -0800
Subject: [PATCH] shared: Add generic hexdump helper

---
 src/shared/util.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++
 src/shared/util.h | 27 ++++++++++++++++++
 2 files changed, 100 insertions(+)
 create mode 100644 src/shared/util.c
 create mode 100644 src/shared/util.h

diff --git a/src/shared/util.c b/src/shared/util.c
new file mode 100644
index 000000000..5cfce1cc0
--- /dev/null
+++ b/src/shared/util.c
@@ -0,0 +1,73 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2012  Intel Corporation. All rights reserved.
+ *
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <ctype.h>
+
+#include "src/shared/util.h"
+
+void util_hexdump(const char dir, const unsigned char *buf, size_t len,
+				util_debug_func_t function, void *user_data)
+{
+	static const char hexdigits[] = "0123456789abcdef";
+	char str[68];
+	size_t i;
+
+	if (!function || !len)
+		return;
+
+	str[0] = dir;
+
+	for (i = 0; i < len; i++) {
+		str[((i % 16) * 3) + 1] = ' ';
+		str[((i % 16) * 3) + 2] = hexdigits[buf[i] >> 4];
+		str[((i % 16) * 3) + 3] = hexdigits[buf[i] & 0xf];
+		str[(i % 16) + 51] = isprint(buf[i]) ? buf[i] : '.';
+
+		if ((i + 1) % 16 == 0) {
+			str[49] = ' ';
+			str[50] = ' ';
+			str[67] = '\0';
+			function(str, user_data);
+			str[0] = ' ';
+		}
+	}
+
+	if (i % 16 > 0) {
+		size_t j;
+		for (j = (i % 16); j < 16; j++) {
+			str[(j * 3) + 1] = ' ';
+			str[(j * 3) + 2] = ' ';
+			str[(j * 3) + 3] = ' ';
+			str[j + 51] = ' ';
+		}
+		str[49] = ' ';
+		str[50] = ' ';
+		str[67] = '\0';
+		function(str, user_data);
+	}
+}
diff --git a/src/shared/util.h b/src/shared/util.h
new file mode 100644
index 000000000..cb25f2ce7
--- /dev/null
+++ b/src/shared/util.h
@@ -0,0 +1,27 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2012  Intel Corporation. All rights reserved.
+ *
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+typedef void (*util_debug_func_t)(const char *str, void *user_data);
+
+void util_hexdump(const char dir, const unsigned char *buf, size_t len,
+				util_debug_func_t function, void *user_data);
-- 
2.47.3