[src/trunk]: src/usr.bin/audiocfg Make the same code that appears repeatedly ...

[isaki <isaki%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/be9f5596d65d
branches:  trunk
changeset: 459109:be9f5596d65d
user:      isaki <isaki%NetBSD.org@localhost>
date:      Sat Aug 24 06:11:10 2019 +0000

description:
Make the same code that appears repeatedly a function.

diffstat:

 usr.bin/audiocfg/main.c |  75 +++++++++++++++++-------------------------------
 1 files changed, 27 insertions(+), 48 deletions(-)

diffs (111 lines):

diff -r 82640e1fcb04 -r be9f5596d65d usr.bin/audiocfg/main.c
--- a/usr.bin/audiocfg/main.c   Sat Aug 24 06:00:49 2019 +0000
+++ b/usr.bin/audiocfg/main.c   Sat Aug 24 06:11:10 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: main.c,v 1.14 2019/08/24 06:00:49 isaki Exp $ */
+/* $NetBSD: main.c,v 1.15 2019/08/24 06:11:10 isaki Exp $ */
 
 /*
  * Copyright (c) 2010 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -142,6 +142,28 @@
        }
 }
 
+/* Always return non-null adev, or exit */
+static struct audiodev *
+getadev_fromstr(const char *str)
+{
+       struct audiodev *adev;
+       unsigned int i;
+
+       if (*str < '0' || *str > '9')
+               usage();
+               /* NOTREACHED */
+       errno = 0;
+       i = strtoul(str, NULL, 10);
+       if (errno)
+               usage();
+               /* NOTREACHED */
+       adev = audiodev_get(i);
+       if (adev == NULL) {
+               errx(EXIT_FAILURE, "no such device");
+       }
+       return adev;
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -169,29 +191,9 @@
                                print_audiodev(adev);
                }
        } else if (strcmp(argv[1], "list") == 0 && argc == 3) {
-               errno = 0;
-               i = strtoul(argv[2], NULL, 10);
-               if (errno)
-                       usage();
-                       /* NOTREACHED */
-               adev = audiodev_get(i);
-               if (adev == NULL) {
-                       errx(EXIT_FAILURE, "no such device");
-               }
-               print_audiodev(adev);
+               print_audiodev(getadev_fromstr(argv[2]));
        } else if (strcmp(argv[1], "default") == 0 && argc == 3) {
-               if (*argv[2] < '0' || *argv[2] > '9')
-                       usage();
-                       /* NOTREACHED */
-               errno = 0;
-               i = strtoul(argv[2], NULL, 10);
-               if (errno)
-                       usage();
-                       /* NOTREACHED */
-               adev = audiodev_get(i);
-               if (adev == NULL) {
-                       errx(EXIT_FAILURE, "no such device");
-               }
+               adev = getadev_fromstr(argv[2]);
                printf("setting default audio device to %s\n", adev->xname);
                if (audiodev_set_default(adev) == -1) {
                        errx(EXIT_FAILURE, "couldn't set default device");
@@ -199,19 +201,7 @@
        } else if (strcmp(argv[1], "set") == 0 && argc == 8) {
                /* XXX bad commandline... */
                /* audiocfg set <index> [p|r] <enc> <prec> <ch> <freq> */
-               if (*argv[2] < '0' || *argv[2] > '9')
-                       usage();
-                       /* NOTREACHED */
-               errno = 0;
-               i = strtoul(argv[2], NULL, 10);
-               if (errno)
-                       usage();
-                       /* NOTREACHED */
-               adev = audiodev_get(i);
-               if (adev == NULL) {
-                       errx(EXIT_FAILURE, "no such device");
-               }
-
+               adev = getadev_fromstr(argv[2]);
                mode = 0;
                for (j = 0; j < strlen(argv[3]); j++) {
                        if (argv[3][j] == 'p')
@@ -243,18 +233,7 @@
                        errx(EXIT_FAILURE, "couldn't set parameter");
                }
        } else if (strcmp(argv[1], "test") == 0 && argc == 3) {
-               if (*argv[2] < '0' || *argv[2] > '9')
-                       usage();
-                       /* NOTREACHED */
-               errno = 0;
-               i = strtoul(argv[2], NULL, 10);
-               if (errno)
-                       usage();
-                       /* NOTREACHED */
-               adev = audiodev_get(i);
-               if (adev == NULL) {
-                       errx(EXIT_FAILURE, "no such device");
-               }
+               adev = getadev_fromstr(argv[2]);
                print_audiodev(adev);
                if (audiodev_test(adev) == -1)
                        return EXIT_FAILURE;