diff options
Diffstat (limited to 'tools/nettle-hash.c')
| -rw-r--r-- | tools/nettle-hash.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/tools/nettle-hash.c b/tools/nettle-hash.c index c78656ad..b669a6ee 100644 --- a/tools/nettle-hash.c +++ b/tools/nettle-hash.c @@ -134,6 +134,19 @@ digest_file(const struct nettle_hash *alg, return 1; } +static void +usage (FILE *f) +{ + fprintf(f, "Usage: nettle-hash -a ALGORITHM [OPTIONS] [FILE ...]\n" + "Options:\n" + " --help Show this help.\n" + " -V, --version Show version information.\n" + " --list List supported hash algorithms.\n" + " -a, --algorithm=ALG Hash algorithm to use.\n" + " -l, --length=LENGTH Desired digest length (octets)\n" + " --raw Raw binary output.\n"); +} + /* FIXME: Be more compatible with md5sum and sha1sum. Options -c (check), -b (binary), -t (text), and output format with hex hash sum, optional star (meaning binary mode), and file name. */ @@ -165,15 +178,11 @@ main (int argc, char **argv) { default: abort(); + case '?': + usage (stderr); + return EXIT_FAILURE; case OPT_HELP: - printf("nettle-hash -a ALGORITHM [OPTIONS] [FILE ...]\n" - "Options:\n" - " --help Show this help.\n" - " -V, --version Show version information.\n" - " --list List supported hash algorithms.\n" - " -a, --algorithm=ALG Hash algorithm to use.\n" - " -l, --length=LENGTH Desired digest length (octets)\n" - " --raw Raw binary output.\n"); + usage (stdout); return EXIT_SUCCESS; case 'V': printf("nettle-hash (" PACKAGE_STRING ")\n"); |