Use err(3) instead of local redefintion. Add usage() as a separate

function. Rewrote man page in mdoc format.

2 files changed, 75 insertions, 79 deletions

diff --git a/usr.bin/lam/lam.1 b/usr.bin/lam/lam.1
index 660e5dc..7151952 100644
--- a/usr.bin/lam/lam.1
+++ b/usr.bin/lam/lam.1
@@ -31,97 +31,98 @@
 .\"
 .\"	@(#)lam.1	8.1 (Berkeley) 6/6/93
 .\"
-.TH LAM 1 "June 6, 1993"
-.UC 4
-.SH NAME
-lam \- laminate files
-.SH SYNOPSIS
-.B lam [ \-[fp]
-min.max
-.B ] [ \-s
-sepstring
-.B ] [ \-t
-c
-.B ]
-file ...
-.SH DESCRIPTION
-.I Lam
+.Dd June 6, 1993
+.Dt LAM 1
+.Os
+.Sh NAME
+.Nm lam
+.Nd laminate files
+.Sh SYNOPSIS
+.Nm
+.Op Fl f Ar min.max
+.Op Fl s Ar sepstring
+.Op Fl t Ar c 
+.Ar file ...
+.Nm lam
+.Op Fl p Ar min.max
+.Op Fl s Ar sepstring
+.Op Fl t Ar c 
+.Ar file ...
+.Sh DESCRIPTION
+.Nm Lam
 copies the named files side by side onto the standard output.
 The
-.IR n -th
+.Em n-th
 input lines from the input
-.IR file s
+.Ar files
 are considered fragments of the single long
-.IR n -th
+.Em n-th
 output line into which they are assembled.
 The name `\fB\-\fP' means the standard input, and may be repeated.
-.PP
+.Pp
 Normally, each option affects only the
-.I file
+.Ar file
 after it.
 If the option letter is capitalized it affects all subsequent files
 until it appears again uncapitalized.
 The options are described below.
-.IP \fB\-f\fP\ min.max
+.Bl -tag -width indent
+.It Fl f Ar min.max
 Print line fragments according to the format string
-.IR min.max ,
+.Ar min.max ,
 where
-.I min
+.Ar min
 is the minimum field width and
-.I max
+.Ar max
 the maximum field width.
 If
-.I min
+.Ar min
 begins with a zero, zeros will be added to make up the field width,
 and if it begins with a `\-', the fragment will be left-adjusted
 within the field.
-.IP \fB\-p\fP\ min.max
-Like \fB\-f\fP,
+.It Fl p Ar min.max
+Like
+.Fl f ,
 but pad this file's field when end-of-file is reached
 and other files are still active.
-.IP \fB\-s\fP\ sepstring
+.It Fl s Ar sepstring
 Print
-.I sepstring
+.Ar sepstring
 before printing line fragments from the next file.
 This option may appear after the last file.
-.IP \fB\-t\fP\ c
+.It Fl t Ar c
 The input line terminator is
-.I c
+.Ar c
 instead of a newline.
 The newline normally appended to each output line is omitted.
-.PP
+.El
+.Pp
 To print files simultaneously for easy viewing use
-.IR pr (1).
-.SH EXAMPLES
-.de IC
-.IP
-.ss 36
-.ft B
-..
-.de NC
-.br
-.ss 12
-.PP
-..
-.PP
+.Xr pr 1 .
+.Sh EXAMPLES
 The command
-.IC
+.Bd -literal
 lam file1 file2 file3 file4
-.NC
+.Ed
+
 joins 4 files together along each line.
 To merge the lines from four different files use
-.IC
+.Bd -literal
 lam file1 \-S "\\
 .br
 " file2 file3 file4
-.NC
+.Ed
+
 Every 2 lines of a file may be joined on one line with
-.IC
+.Bd -literal
 lam \- \- < file
-.NC
+.Ed
+
 and a form letter with substitutions keyed by `@' can be done with
-.IC
+.Bd -literal
 lam \-t @ letter changes
-.NC
-.SH SEE ALSO
-join(1), pr(1), printf(3)
+.Ed
+.Sh SEE ALSO
+.Xr join 1 ,
+.Xr pr 1 ,
+.Xr printf 3
diff --git a/usr.bin/lam/lam.c b/usr.bin/lam/lam.c
index 07d6abb..599337a 100644
--- a/usr.bin/lam/lam.c
+++ b/usr.bin/lam/lam.c
@@ -32,13 +32,17 @@
  */
 
 #ifndef lint
-static char copyright[] =
+static const char copyright[] =
 "@(#) Copyright (c) 1993\n\
 	The Regents of the University of California.  All rights reserved.\n";
 #endif /* not lint */
 
 #ifndef lint
+#if 0
 static char sccsid[] = "@(#)lam.c	8.1 (Berkeley) 6/6/93";
+#endif
+static const char rcsid[] =
+	"$Id$";
 #endif /* not lint */
 
 /*
@@ -46,6 +50,7 @@ static char sccsid[] = "@(#)lam.c	8.1 (Berkeley) 6/6/93";
  *	Author:  John Kunze, UCB
  */
 
+#include <err.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -67,10 +72,10 @@ int	nofinalnl;		/* normally append \n to each output line */
 char	line[BIGBUFSIZ];
 char	*linep;
 
-void	 error __P((char *, char *));
 char	*gatherline __P((struct openfile *));
 void	 getargs __P((char *[]));
 char	*pad __P((struct openfile *));
+static void usage __P((void));
 
 int
 main(argc, argv)
@@ -81,7 +86,7 @@ main(argc, argv)
 
 	getargs(argv);
 	if (!morefiles)
-		error("lam - laminate files", "");
+		usage();
 	for (;;) {
 		linep = line;
 		for (ip = input; ip->fp != NULL; ip++)
@@ -113,8 +118,7 @@ getargs(av)
 			if (*p == '-')
 				ip->fp = stdin;
 			else if ((ip->fp = fopen(p, "r")) == NULL) {
-				perror(p);
-				exit(1);
+				err(1, p);
 			}
 			ip->pad = P;
 			if (!ip->sepstring)
@@ -131,14 +135,14 @@ getargs(av)
 			if (*++p || (p = *++av))
 				ip->sepstring = p;
 			else
-				error("Need string after -%s", c);
+				errx(1, "need string after -%s", c);
 			S = (*c == 'S' ? 1 : 0);
 			break;
 		case 't':
 			if (*++p || (p = *++av))
 				ip->eol = *p;
 			else
-				error("Need character after -%s", c);
+				errx(1, "need character after -%s", c);
 			T = (*c == 'T' ? 1 : 0);
 			nofinalnl = 1;
 			break;
@@ -150,15 +154,15 @@ getargs(av)
 			if (*++p || (p = *++av)) {
 				fmtp += strlen(fmtp) + 1;
 				if (fmtp > fmtbuf + BUFSIZ)
-					error("No more format space", "");
+					errx(1, "no more format space");
 				sprintf(fmtp, "%%%ss", p);
 				ip->format = fmtp;
 			}
 			else
-				error("Need string after -%s", c);
+				errx(1, "need string after -%s", c);
 			break;
 		default:
-			error("What do you mean by -%s?", c);
+			errx(1, "what do you mean by -%s?", c);
 			break;
 		}
 	}
@@ -214,20 +218,11 @@ gatherline(ip)
 	return (lp);
 }
 
-void
-error(msg, s)
-	char *msg, *s;
+static void
+usage()
 {
-	fprintf(stderr, "lam: ");
-	fprintf(stderr, msg, s);
-	fprintf(stderr,
-"\nUsage:  lam [ -[fp] min.max ] [ -s sepstring ] [ -t c ] file ...\n");
-	if (strncmp("lam - ", msg, 6) == 0)
-		fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s",
-		    "-f min.max	field widths for file fragments\n",
-		    "-p min.max	like -f, but pad missing fragments\n",
-		    "-s sepstring	fragment separator\n",
-"-t c		input line terminator is c, no \\n after output lines\n",
-		    "Capitalized options affect more than one file.\n");
+	fprintf(stderr, "%s\n%s\n",
+"usage: lam [ -f min.max ] [ -s sepstring ] [ -t c ] file ...",
+"       lam [ -p min.max ] [ -s sepstring ] [ -t c ] file ...");
 	exit(1);
 }