[src/trunk]: src/games/fortune/strfile Simplify, errors to stderr.

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

details:   https://anonhg.NetBSD.org/src/rev/ca900779741d
branches:  trunk
changeset: 1009679:ca900779741d
user:      christos <christos%NetBSD.org@localhost>
date:      Thu Apr 30 12:32:26 2020 +0000

description:
Simplify, errors to stderr.

diffstat:

 games/fortune/strfile/strfile.c |  35 ++++++++++++++++++-----------------
 1 files changed, 18 insertions(+), 17 deletions(-)

diffs (89 lines):

diff -r 9896f3d750c1 -r ca900779741d games/fortune/strfile/strfile.c
--- a/games/fortune/strfile/strfile.c   Thu Apr 30 12:32:16 2020 +0000
+++ b/games/fortune/strfile/strfile.c   Thu Apr 30 12:32:26 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: strfile.c,v 1.39 2020/04/29 20:45:05 nia Exp $ */
+/*     $NetBSD: strfile.c,v 1.40 2020/04/30 12:32:26 christos Exp $    */
 
 /*-
  * Copyright (c) 1989, 1993
@@ -47,7 +47,7 @@
 #if 0
 static char sccsid[] = "@(#)strfile.c  8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: strfile.c,v 1.39 2020/04/29 20:45:05 nia Exp $");
+__RCSID("$NetBSD: strfile.c,v 1.40 2020/04/30 12:32:26 christos Exp $");
 #endif
 #endif /* not lint */
 #endif /* __NetBSD__ */
@@ -55,6 +55,7 @@
 #include <sys/types.h>
 #include <sys/param.h>
 #include <ctype.h>
+#include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -131,7 +132,7 @@
 
 static uint32_t h2nl(uint32_t h);
 static void getargs(int argc, char **argv);
-static void usage(void) __dead;
+static void usage(const char *, ...) __dead __printflike(1, 2);
 static void add_offset(FILE *fp, off_t off);
 static void do_order(void);
 static int cmp_str(const void *vp1, const void *vp2);
@@ -295,39 +296,39 @@
                        break;
                case '?':
                default:
-                       usage();
+                       usage(NULL);
                }
        argv += optind;
 
        if (*argv) {
                Infile = *argv;
                if (*++argv) {
-                       len = strlen(*argv);
+                       len = strlcpy(Outfile, *argv, sizeof(Outfile));
                        if (len >= sizeof(Outfile)) {
-                               puts("Bad output filename");
-                               usage();
+                               usage("Too long output filename");
                        }
-                       (void) memcpy(Outfile, *argv, len + 1);
                }
        }
        if (!Infile) {
-               puts("No input file name");
-               usage();
+               usage("No input file name");
        }
        if (*Outfile == '\0') {
-               len = strlen(Infile) + sizeof(".dat");
-               if (len > sizeof(Outfile)) {
-                       puts("Bad input filename");
-                       usage();
+               len = snprintf(Outfile, sizeof(Outfile), "%s.dat", Infile);
+               if (len >= sizeof(Outfile)) {
+                       usage("Too long input filename");
                }
-               (void) strcpy(Outfile, Infile);
-               (void) strcat(Outfile, ".dat");
        }
 }
 
 static void
-usage(void)
+usage(const char *fmt, ...)
 {
+       if (fmt) {
+               va_list ap;
+               va_start(ap, fmt);
+               vwarnx(fmt, ap);
+               va_end(ap);
+       }
        (void) fprintf(stderr,
            "Usage: %s [-iorsx] [-c char] sourcefile [datafile]\n",
            getprogname());