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util/nvmutil: better hexdump

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this is a more generic one that i implemented
for "lottery.c" (which is really just a tester
of my rset function in lib/rand.c)

i could probably actually write a full hexdump
program in libreboot-utils to be honest.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-29 07:21:08 +01:00
parent 546565f321
commit afe2e71c01
4 changed files with 47 additions and 76 deletions
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util/libreboot-utils/lottery.c
+1 -44
View File
@@ -13,9 +13,6 @@
static void
exit_cleanup(void);
static void
spew_buf(const void *data, size_t len);
int
main(int argc, char **argv)
{
@@ -35,53 +32,13 @@ main(int argc, char **argv)
same = 1;
if (argc < 2) /* no spew */
spew_buf(buf, BUFSIZ);
spew_hex(buf, BUFSIZ);
free(buf);
fprintf(stderr, "\n%s\n", same ? "You win!" : "You lose!");
return same ^ 1;
}
static void
spew_buf(const void *data, size_t len)
{
const unsigned char *buf = data;
unsigned char c;
size_t i, j;
if (buf == NULL ||
len == 0)
return;
for (i = 0; i < len; i += 16) {
printf("%08zx ", i);
for (j = 0; j < 16; j++) {
if (i + j < len)
printf("%02x ", buf[i + j]);
else
printf(" ");
if (j == 7)
printf(" ");
}
printf(" |");
for (j = 0; j < 16 && i + j < len; j++) {
c = buf[i + j];
printf("%c", isprint(c) ? c : '.');
}
printf("|\n");
}
printf("%08zx\n", len);
}
static void
exit_cleanup(void)
{