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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>
This commit is contained in:
Jeff Hostetler 2022-05-26 21:47:20 +00:00 committed by Junio C Hamano
parent d6d58ff8ab
commit 9915e08f9b
4 changed files with 33 additions and 0 deletions
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1
Makefile
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@ -729,6 +729,7 @@ TEST_BUILTINS_OBJS += test-getcwd.o
TEST_BUILTINS_OBJS += test-hash-speed.o
TEST_BUILTINS_OBJS += test-hash.o
TEST_BUILTINS_OBJS += test-hashmap.o
TEST_BUILTINS_OBJS += test-hexdump.o
TEST_BUILTINS_OBJS += test-index-version.o
TEST_BUILTINS_OBJS += test-json-writer.o
TEST_BUILTINS_OBJS += test-lazy-init-name-hash.o

30
t/helper/test-hexdump.c Normal file
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@ -0,0 +1,30 @@
#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;
}

1
t/helper/test-tool.c
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@ -38,6 +38,7 @@ static struct test_cmd cmds[] = {
{ "getcwd", cmd__getcwd },
{ "hashmap", cmd__hashmap },
{ "hash-speed", cmd__hash_speed },
{ "hexdump", cmd__hexdump },
{ "index-version", cmd__index_version },
{ "json-writer", cmd__json_writer },
{ "lazy-init-name-hash", cmd__lazy_init_name_hash },

1
t/helper/test-tool.h
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@ -29,6 +29,7 @@ int cmd__genzeros(int argc, const char **argv);
int cmd__getcwd(int argc, const char **argv);
int cmd__hashmap(int argc, const char **argv);
int cmd__hash_speed(int argc, const char **argv);
int cmd__hexdump(int argc, const char **argv);
int cmd__index_version(int argc, const char **argv);
int cmd__json_writer(int argc, const char **argv);
int cmd__lazy_init_name_hash(int argc, const char **argv);