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/* hexdump.c - hexdump function */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/types.h>
#include <grub/misc.h>
#include <grub/lib/hexdump.h>
void
hexdump (unsigned long bse, char *buf, int len)
{
int pos;
char line[80];
while (len > 0)
{
int cnt, i;
pos = grub_snprintf (line, sizeof (line), "%08lx ", bse);
cnt = 16;
if (cnt > len)
cnt = len;
for (i = 0; i < cnt; i++)
{
pos += grub_snprintf (&line[pos], sizeof (line) - pos,
"%02x ", (unsigned char) buf[i]);
if ((i & 7) == 7)
line[pos++] = ' ';
}
for (; i < 16; i++)
{
pos += grub_snprintf (&line[pos], sizeof (line) - pos, " ");
if ((i & 7) == 7)
line[pos++] = ' ';
}
line[pos++] = '|';
for (i = 0; i < cnt; i++)
line[pos++] = ((buf[i] >= 32) && (buf[i] < 127)) ? buf[i] : '.';
line[pos++] = '|';
line[pos] = 0;
grub_printf ("%s\n", line);
/* Print only first and last line if more than 3 lines are identical. */
if (len >= 4 * 16
&& ! grub_memcmp (buf, buf + 1 * 16, 16)
&& ! grub_memcmp (buf, buf + 2 * 16, 16)
&& ! grub_memcmp (buf, buf + 3 * 16, 16))
{
grub_printf ("*\n");
do
{
bse += 16;
buf += 16;
len -= 16;
}
while (len >= 3 * 16 && ! grub_memcmp (buf, buf + 2 * 16, 16));
}
bse += 16;
buf += 16;
len -= cnt;
}
}
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