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Date:      Tue, 07 May 2002 23:04:11 -0400
From:      "Brian F. Feldman" <green@FreeBSD.ORG>
To:        "J. Mallett" <jmallett@FreeBSD.ORG>
Cc:        "David O'Brien" <obrien@FreeBSD.ORG>, Garance A Drosihn <drosih@rpi.edu>, arch@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-committers@FreeBSD.ORG
Subject:   Re: cvs commit: src/usr.bin/sed main.c sed.1 
Message-ID:  <200205080304.g4834BL42647@green.bikeshed.org>
In-Reply-To: Your message of "Wed, 08 May 2002 01:36:53 -0000." <20020508013651.GA28536@FreeBSD.ORG> 

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"J. Mallett" <jmallett@FreeBSD.ORG> wrote:
> On Tue, May 07, 2002 at 06:27:50PM -0700, David O'Brien wrote:
> > On Wed, May 08, 2002 at 12:59:58AM +0000, J. Mallett wrote:
> > > > If a user can not be bothered to use '-I .blah' instead of
> > > > '-i.blah', then they can continue to use perl for all I care.
> > ...
> > > I like your logic better than the logic I've been using.
> > > If one or two more people will agree to this, I'll happily make
> > > the necessary changes.
> > 
> > I do not agree, I WILL not agree.  I will commit -i[ext] later if anyone
> > takes it away (or fails to add it).  The ENTIRE PURPOSE HERE is to add
> > "perl -i" functionality.  NOT find how many different ways things can be
> > proposed.
> 
> But unless people will shut the hell up about allowing -i with no argument,
> we cannot achieve that without adding another option one way or the other.
> 
> [...]

Trying to move this to arch:
Another option would be to extend getopt(3) in what could simply be a very 
reasonable way.  Here's my proposition for making a "clean" version that 
acts like Perl:

Index: Makefile
===================================================================
RCS file: /usr2/ncvs/src/usr.bin/sed/Makefile,v
retrieving revision 1.4
diff -u -r1.4 Makefile
--- Makefile	8 Feb 2002 23:07:35 -0000	1.4
+++ Makefile	8 May 2002 02:49:35 -0000
@@ -3,6 +3,7 @@
 
 PROG=	sed
 SRCS=	compile.c main.c misc.c process.c
+SRCS+=	getopt.c
 
 
 .include <bsd.prog.mk>
Index: main.c
===================================================================
RCS file: /usr2/ncvs/src/usr.bin/sed/main.c,v
retrieving revision 1.19
diff -u -r1.19 main.c
--- main.c	7 May 2002 23:33:44 -0000	1.19
+++ main.c	8 May 2002 02:58:58 -0000
@@ -124,7 +124,7 @@
 	fflag = 0;
 	inplace = NULL;
 
-	while ((c = getopt(argc, argv, "Eae:f:i:n")) != -1)
+	while ((c = getopt(argc, argv, "Eae:f:i;n")) != -1)
 		switch (c) {
 		case 'E':
 			rflags = REG_EXTENDED;
@@ -146,6 +146,8 @@
 			break;
 		case 'i':
 			inplace = optarg;
+			if (inplace == NULL)
+				inplace = "";
 			break;
 		case 'n':
 			nflag = 1;
@@ -182,8 +184,8 @@
 usage()
 {
 	(void)fprintf(stderr, "%s\n%s\n",
-		"usage: sed script [-Ean] [-i extension] [file ...]",
-		"       sed [-an] [-i extension] [-e script] ... [-f script_file] ... [file ...]");
+		"usage: sed script [-Ean] [-i[extension]] [file ...]",
+		"       sed [-an] [-i[extension]] [-e script] ... [-f script_file] ... [file ...]");
 	exit(1);
 }
 
@@ -434,20 +436,21 @@
 	if (*inplace == '\0') {
 		char template[] = "/tmp/sed.XXXXXXXXXX";
 
-		if (mktemp(template) == NULL)
-			err(1, "mktemp");
+		output = mkstemp(template);
+		if (output == -1)
+			err(1, "mkstemp");
 		strlcpy(backup, template, MAXPATHLEN);
 	} else {
 		strlcpy(backup, *filename, MAXPATHLEN);
 		strlcat(backup, inplace, MAXPATHLEN);
+		output = open(backup, O_WRONLY|O_CREAT);
+		if (output == -1)
+			err(1, "open(%s)", backup);
 	}
 
 	input = open(*filename, O_RDONLY);
 	if (input == -1)
 		err(1, "open(%s)", *filename);
-	output = open(backup, O_WRONLY|O_CREAT);
-	if (output == -1)
-		err(1, "open(%s)", backup);
 	if (fchmod(output, orig.st_mode & ~S_IFMT) == -1)
 		err(1, "chmod");
 	buffer = malloc(orig.st_size);
--- ../../lib/libc/stdlib/getopt.c	Thu Sep  6 02:47:20 2001
+++ getopt.c	Tue May  7 22:49:22 2002
@@ -93,12 +93,8 @@
 			    "%s: illegal option -- %c\n", __progname, optopt);
 		return (BADCH);
 	}
-	if (*++oli != ':') {			/* don't need argument */
-		optarg = NULL;
-		if (!*place)
-			++optind;
-	}
-	else {					/* need an argument */
+	switch (*++oli) {
+	case ':':				/* need an argument */
 		if (*place)			/* no white space */
 			optarg = place;
 		else if (nargc <= ++optind) {	/* no arg */
@@ -115,6 +111,19 @@
 			optarg = nargv[optind];
 		place = EMSG;
 		++optind;
+		break;
+	case ';':				/* argument optional */
+		if (*place)
+			optarg = place;
+		else
+			optarg = NULL;
+		place = EMSG;
+		optind++;
+		break;
+	default:				/* don't need argument */
+		optarg = NULL;
+		if (!*place)
+			++optind;
 	}
 	return (optopt);			/* dump back option letter */
 }


-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org  <> bfeldman@tislabs.com      \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\



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