diff options
Diffstat (limited to 'usr.bin/fold/fold.c')
| -rw-r--r-- | usr.bin/fold/fold.c | 35 |
1 files changed, 24 insertions, 11 deletions
diff --git a/usr.bin/fold/fold.c b/usr.bin/fold/fold.c index dd5b541..080c9ab 100644 --- a/usr.bin/fold/fold.c +++ b/usr.bin/fold/fold.c @@ -35,25 +35,36 @@ */ #ifndef lint -static char copyright[] = +static const char copyright[] = "@(#) Copyright (c) 1990, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint +#if 0 static char sccsid[] = "@(#)fold.c 8.1 (Berkeley) 6/6/93"; +#endif +static const char rcsid[] = + "$Id$"; #endif /* not lint */ +#include <err.h> #include <stdio.h> +#include <stdlib.h> #include <string.h> +#include <unistd.h> #define DEFLINEWIDTH 80 +void fold __P((int)); +static void usage __P((void)); + +int main(argc, argv) int argc; char **argv; { - extern int errno, optind; + extern int optind; extern char *optarg; register int ch; int width; @@ -64,9 +75,7 @@ main(argc, argv) switch (ch) { case 'w': if ((width = atoi(optarg)) <= 0) { - (void)fprintf(stderr, - "fold: illegal width value.\n"); - exit(1); + errx(1, "illegal width value"); } break; case '0': case '1': case '2': case '3': case '4': @@ -80,9 +89,7 @@ main(argc, argv) } break; default: - (void)fprintf(stderr, - "usage: fold [-w width] [file ...]\n"); - exit(1); + usage(); } argv += optind; argc -= optind; @@ -93,14 +100,20 @@ main(argc, argv) fold(width); else for (; *argv; ++argv) if (!freopen(*argv, "r", stdin)) { - (void)fprintf(stderr, - "fold: %s: %s\n", *argv, strerror(errno)); - exit(1); + err(1, "%s", *argv); } else fold(width); exit(0); } +static void +usage() +{ + (void)fprintf(stderr, "usage: fold [-w width] [file ...]\n"); + exit(1); +} + +void fold(width) register int width; { |
