git/t/helper/test-hexdump.c
Jeff Hostetler 9915e08f9b t/helper/hexdump: add helper to print hexdump of stdin
Co-authored-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-05-26 15:59:27 -07:00

30 lines
473 B
C

#include "test-tool.h"
#include "git-compat-util.h"
/*
* Read stdin and print a hexdump to stdout.
*/
int cmd__hexdump(int argc, const char **argv)
{
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;
}