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| author | Quentin Carbonneaux <quentin.carbonneaux@yale.edu> | 2016-04-11 18:00:45 -0400 |
|---|---|---|
| committer | Quentin Carbonneaux <quentin.carbonneaux@yale.edu> | 2016-04-11 18:00:45 -0400 |
| commit | 8bb7d57b4ef4d0c0f04dbeb67eb1e3f55d407c0d (patch) | |
| tree | db74da1e73473a56c94057b1afae2bd482680cbb | |
| parent | 3a3c88532c4d1c5fdf89d159cb24706dcbc6fc28 (diff) | |
| download | roux-8bb7d57b4ef4d0c0f04dbeb67eb1e3f55d407c0d.tar.gz | |
improve help message slightly
| -rw-r--r-- | main.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/main.c b/main.c index b1047c9..5fad26e 100644 --- a/main.c +++ b/main.c @@ -84,7 +84,7 @@ main(int ac, char *av[]) asm = Defaultasm; outf = stdout; - while ((c = getopt(ac, av, "d:o:G:")) != -1) + while ((c = getopt(ac, av, "hd:o:G:")) != -1) switch (c) { case 'd': for (; *optarg; optarg++) @@ -107,9 +107,14 @@ main(int ac, char *av[]) exit(1); } break; + case 'h': default: - fprintf(stderr, "usage: %s [-d <flags>] [-o out] {file.ssa, -}\n", av[0]); - exit(1); + fprintf(stderr, "%s [OPTIONS] {file.ssa, -}\n", av[0]); + fprintf(stderr, "\t%-10s prints this help\n", "-h"); + fprintf(stderr, "\t%-10s output to file\n", "-o file"); + fprintf(stderr, "\t%-10s generate gas (e) or osx (m) asm\n", "-G {e,m}"); + fprintf(stderr, "\t%-10s dump debug information\n", "-d <flags>"); + exit(c != 'h'); } switch (asm) { |