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test-sha1: add a binary output mode

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The test-sha1 helper program will run our internal sha1
routines over its input and output the 40-byte hex sha1.
Sometimes, however, it is useful to have the binary 20-byte
sha1 (and it's a pain to convert back in the shell). Let's
add a "-b" option to output the binary version.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2013-08-22 19:12:42 -04:00 committed by Junio C Hamano
parent a3bc3d070c
commit 54c93cb4af
1 changed files with 12 additions and 3 deletions
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15
test-sha1.c
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@ -5,10 +5,15 @@ int main(int ac, char **av)
git_SHA_CTX ctx;
unsigned char sha1[20];
unsigned bufsz = 8192;
int binary = 0;
char *buffer;
if (ac == 2)
bufsz = strtoul(av[1], NULL, 10) * 1024 * 1024;
if (ac == 2) {
if (!strcmp(av[1], "-b"))
binary = 1;
else
bufsz = strtoul(av[1], NULL, 10) * 1024 * 1024;
}
if (!bufsz)
bufsz = 8192;
@ -42,6 +47,10 @@ int main(int ac, char **av)
git_SHA1_Update(&ctx, buffer, this_sz);
}
git_SHA1_Final(sha1, &ctx);
puts(sha1_to_hex(sha1));
if (binary)
fwrite(sha1, 1, 20, stdout);
else
puts(sha1_to_hex(sha1));
exit(0);
}