From 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:29:51 +0200 Subject: Adding upstream version 2.06. Signed-off-by: Daniel Baumann --- grub-core/lib/hexdump.c | 85 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 grub-core/lib/hexdump.c (limited to 'grub-core/lib/hexdump.c') 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 . + */ + +#include +#include +#include + +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; + } +} -- cgit v1.2.3