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authorScott Soule Cheloha <cheloha@cvs.openbsd.org>2022-12-02 22:21:36 +0000
committerScott Soule Cheloha <cheloha@cvs.openbsd.org>2022-12-02 22:21:36 +0000
commitdeae90b98f6e12a8199ca866dc381e872252c759 (patch)
treea353a667b6e1823e488662994097dff6697ceea4
parent15a5e1994854c2dc16dfe097f7177306bddbefb9 (diff)
midicat(1): add a usage() function
Tweaked by millert@. Link: https://marc.info/?l=openbsd-tech&m=166982129428027&w=2 ok millert@ kn@ ratchov@
-rw-r--r--usr.bin/midicat/midicat.c25
1 files changed, 15 insertions, 10 deletions
diff --git a/usr.bin/midicat/midicat.c b/usr.bin/midicat/midicat.c
index d6e8079226b..21bb05ac78a 100644
--- a/usr.bin/midicat/midicat.c
+++ b/usr.bin/midicat/midicat.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: midicat.c,v 1.4 2022/11/30 14:56:45 cheloha Exp $ */
+/* $OpenBSD: midicat.c,v 1.5 2022/12/02 22:21:35 cheloha Exp $ */
/*
* Copyright (c) 2015 Alexandre Ratchov <alex@caoua.org>
*
@@ -22,8 +22,7 @@
#include <unistd.h>
#include <string.h>
-char usagestr[] = "usage: midicat [-d] [-i in-file] [-o out-file] "
- "[-q in-port] [-q out-port]\n";
+void __dead usage(void);
int
main(int argc, char **argv)
@@ -62,16 +61,14 @@ main(int argc, char **argv)
ofile = optarg;
break;
default:
- goto bad_usage;
+ usage();
}
}
argc -= optind;
argv += optind;
- if (argc != 0) {
- bad_usage:
- fputs(usagestr, stderr);
- return 1;
- }
+
+ if (argc != 0)
+ usage();
/* we don't support more than one data flow */
if (ifile != NULL && ofile != NULL) {
@@ -87,7 +84,7 @@ main(int argc, char **argv)
/* if there're neither files nor ports, then we've nothing to do */
if (port0 == NULL && ifile == NULL && ofile == NULL)
- goto bad_usage;
+ usage();
/* if no port specified, use default one */
if (port0 == NULL)
@@ -195,3 +192,11 @@ main(int argc, char **argv)
close(ofd);
return 0;
}
+
+void __dead
+usage(void)
+{
+ fprintf(stderr, "usage: midicat [-d] [-i in-file] [-o out-file] "
+ "[-q in-port] [-q out-port]\n");
+ exit(1);
+}