[syslinux] [Syslinux] [PATCH] [RFC] lib: add a hex dump lib function

[Liu Aleaxander]

Hi Sebastian,

On Sat, Dec 12, 2009 at 10:08 PM, Sebastian Herbszt <herbszt at gmx.de> wrote:
>
[snip]
>
>> diff --git a/com32/lib/hexdump.c b/com32/lib/hexdump.c
>> new file mode 100644
>> index 0000000..04edbcf
>> --- /dev/null
>> +++ b/com32/lib/hexdump.c
>> @@ -0,0 +1,42 @@
>> +/*
>> + * The hex dump lib.
>> + *
>> + * Copyright (C) 2009 Liu Aleaxander -- All rights reserved. This file
>> + * may be redistributed under the terms of the GNU Public License.
>> + */
>> +
>
> com32/LICENCE says libcom32 is under the MIT license.
>
Thanks! and sorry for not noticing that.

And here is the version 2, with a hexdump.h file included in include/ directory.

---
 com32/include/hexdump.h |    6 ++++
 com32/lib/Makefile      |    2 +
 com32/lib/hexdump.c     |   61 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 69 insertions(+), 0 deletions(-)
 create mode 100644 com32/include/hexdump.h
 create mode 100644 com32/lib/hexdump.c

diff --git a/com32/include/hexdump.h b/com32/include/hexdump.h
new file mode 100644
index 0000000..0ff9bb3
--- /dev/null
+++ b/com32/include/hexdump.h
@@ -0,0 +1,6 @@
+#ifndef HEXDUMP_H
+#define HEXDUMP_H
+
+__extern void hexdump(const void *, int);
+
+#endif /* hexdump.h */
diff --git a/com32/lib/Makefile b/com32/lib/Makefile
index c5b1981..0c7cf07 100644
--- a/com32/lib/Makefile
+++ b/com32/lib/Makefile
@@ -29,6 +29,8 @@ LIBOBJS = \
 	\
 	opendir.o readdir.o closedir.o getcwd.o chdir.o fdopendir.o	\
 	\
+	hexdump.o							\
+	\
 	libgcc/__ashldi3.o libgcc/__udivdi3.o			\
 	libgcc/__negdi2.o libgcc/__ashrdi3.o libgcc/__lshrdi3.o		\
 	libgcc/__muldi3.o libgcc/__udivmoddi4.o libgcc/__umoddi3.o	\
diff --git a/com32/lib/hexdump.c b/com32/lib/hexdump.c
new file mode 100644
index 0000000..5fbabfd
--- /dev/null
+++ b/com32/lib/hexdump.c
@@ -0,0 +1,61 @@
+/*
+ * The hex dump lib.
+ *
+ *   Copyright (C) 2009 Liu Aleaxander -- All rights reserved.
+ *
+ *   Permission is hereby granted, free of charge, to any person
+ *   obtaining a copy of this software and associated documentation
+ *   files (the "Software"), to deal in the Software without
+ *   restriction, including without limitation the rights to use,
+ *   copy, modify, merge, publish, distribute, sublicense, and/or
+ *   sell copies of the Software, and to permit persons to whom
+ *   the Software is furnished to do so, subject to the following
+ *   conditions:
+ *
+ *   The above copyright notice and this permission notice shall
+ *   be included in all copies or substantial portions of the Software.
+ *
+ *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *   OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+void hexdump(const void *data, int len)
+{
+    int i, index, offset = 0;
+    uint8_t *p = data;
+    uint8_t hex[16 * 3 + 1] = {0, };
+    uint8_t text[16 + 1] = {0, };
+    uint8_t c;
+
+    for (i = 0; i < len; i++) {
+	index = i & 0xf;
+	if (i && index == 0) {
+	    /* print the buffer before reset it */
+	    printf("%08x  %-48s  |%-16s|\n", offset, hex, text);
+	    offset += 0x10;
+	    memset(hex, 0, sizeof hex);
+	    memset(text, 0, sizeof text);
+	}
+
+	c = *p++;
+	sprintf((char *)&hex[index * 3], "%02x ", c);
+	if (c < 0x20 || c > 0x7f)
+	    text[index] = '.';
+	else
+	    text[index] = c;
+    }
+
+    /* print the last part */
+    printf("%08x  %-48s  |%-16s|\n", offset, hex, text);
+}
-- 
1.6.4.1


-- 
regards
Liu Aleaxander