test-sha1: add a binary output mode
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>
Jeff King committed
Aug 22, 2013 at 19:12 UTC
54c93cb4afc932ab125a59464bb52e04f9c36575
1 file changed
+12
-3
test-sha1.c
+12
-3
@@ -5,10 +5,15 @@ int main(int ac, char **av)
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git_SHA_CTX ctx;
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unsigned char sha1[20];
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unsigned bufsz = 8192;
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+ int binary = 0;
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char *buffer;
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- if (ac == 2)
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- bufsz = strtoul(av[1], NULL, 10) * 1024 * 1024;
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+ if (ac == 2) {
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+ if (!strcmp(av[1], "-b"))
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+ binary = 1;
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+ else
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+ bufsz = strtoul(av[1], NULL, 10) * 1024 * 1024;
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+ }
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if (!bufsz)
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bufsz = 8192;
@@ -42,6 +47,10 @@ int main(int ac, char **av)
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git_SHA1_Update(&ctx, buffer, this_sz);
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}
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git_SHA1_Final(sha1, &ctx);
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- puts(sha1_to_hex(sha1));
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+
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+ if (binary)
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+ fwrite(sha1, 1, 20, stdout);
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+ else
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+ puts(sha1_to_hex(sha1));
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exit(0);
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}