git/t/helper/test-hexdump.c
Jeff King 126e3b3d2a t/helper: mark unused argv/argc arguments
Many test helper programs do not bother to look at argc or argv, because
they don't take any options. In a user-facing program, it's a good idea
to check for unexpected arguments and complain. But for a test helper,
it's not worth the trouble to enforce this.

But we do want to tell the compiler we're OK with ignoring them, to
silence -Wunused-parameter (and obviously we can't get rid of them,
since we have to conform to the usual cmd__foo() interface).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-28 14:11:24 -07:00

30 lines
487 B
C

#include "test-tool.h"
#include "git-compat-util.h"
/*
* Read stdin and print a hexdump to stdout.
*/
int cmd__hexdump(int argc UNUSED, const char **argv UNUSED)
{
char buf[1024];
ssize_t i, len;
int have_data = 0;
for (;;) {
len = xread(0, buf, sizeof(buf));
if (len < 0)
die_errno("failure reading stdin");
if (!len)
break;
have_data = 1;
for (i = 0; i < len; i++)
printf("%02x ", (unsigned char)buf[i]);
}
if (have_data)
putchar('\n');
return 0;
}