1 files changed, 85 insertions, 0 deletions
diff --git a/grub-core/lib/hexdump.c b/grub-core/lib/hexdump.c
new file mode 100644
index 0000000..317635a
--- /dev/null
+++ b/grub-core/lib/hexdump.c
@@ -0,0 +1,85 @@
+/* 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;
+    }
+}