add -0 option, written by me

2 files changed, 29 insertions, 5 deletions

diff --git a/usr.bin/xargs/xargs.1 b/usr.bin/xargs/xargs.1
index 312c7f0165b..4e3713e3757 100644
--- a/usr.bin/xargs/xargs.1
+++ b/usr.bin/xargs/xargs.1
@@ -45,6 +45,7 @@
 .Nd "construct argument list(s) and execute utility"
 .Sh SYNOPSIS
 .Nm xargs
+.Op Fl 0
 .Op Fl t
 .Oo Op Fl x
 .Fl n Ar number
@@ -81,6 +82,16 @@ Any single character, including newlines, may be escaped by a backslash.
 .Pp
 The options are as follows:
 .Bl -tag -width indent
+.It Fl 0
+Changes
+.Nm xargs
+to expect NUL
+(``\\0'')
+characters as seperators, instead of spaces and newlines.
+This is expected to be used in concert with the
+.Fl 0
+option in
+.Nm find .
 .It Fl n Ar number
 Set the maximum number of arguments taken from standard input for each
 invocation of the utility.
diff --git a/usr.bin/xargs/xargs.c b/usr.bin/xargs/xargs.c
index 73910240dcc..062f54f1f49 100644
--- a/usr.bin/xargs/xargs.c
+++ b/usr.bin/xargs/xargs.c
@@ -62,6 +62,7 @@ static char rcsid[] = "$NetBSD: xargs.c,v 1.7 1994/11/14 06:51:41 jtc Exp $";
 #include "pathnames.h"
 
 int tflag, rval;
+int zflag;
 
 void run __P((char **));
 void usage __P((void));
@@ -94,7 +95,7 @@ main(argc, argv)
 	nargs = 5000;
 	nline = ARG_MAX - 4 * 1024;
 	nflag = xflag = 0;
-	while ((ch = getopt(argc, argv, "n:s:tx")) != EOF)
+	while ((ch = getopt(argc, argv, "0n:s:tx")) != EOF)
 		switch(ch) {
 		case 'n':
 			nflag = 1;
@@ -110,6 +111,9 @@ main(argc, argv)
 		case 'x':
 			xflag = 1;
 			break;
+		case '0':
+			zflag = 1;
+			break;
 		case '?':
 		default:
 			usage();
@@ -183,10 +187,17 @@ main(argc, argv)
 		case ' ':
 		case '\t':
 			/* Quotes escape tabs and spaces. */
-			if (insingle || indouble)
+			if (insingle || indouble || zflag)
 				goto addch;
 			goto arg2;
+		case '\0':
+			if (zflag)
+				goto arg2;
+			goto addch;
 		case '\n':
+			if (zflag)
+				goto addch;
+
 			/* Empty lines are skipped. */
 			if (argp == p)
 				continue;
@@ -217,16 +228,18 @@ arg2:			*p = '\0';
 			argp = p;
 			break;
 		case '\'':
-			if (indouble)
+			if (indouble || zflag)
 				goto addch;
 			insingle = !insingle;
 			break;
 		case '"':
-			if (insingle)
+			if (insingle || zflag)
 				goto addch;
 			indouble = !indouble;
 			break;
 		case '\\':
+			if (zflag)
+				goto addch;
 			/* Backslash escapes anything, is escaped by quotes. */
 			if (!insingle && !indouble && (ch = getchar()) == EOF)
 				errx(1, "backslash at EOF");
@@ -316,6 +329,6 @@ void
 usage()
 {
 	(void)fprintf(stderr,
-"usage: xargs [-t] [-n number [-x]] [-s size] [utility [argument ...]]\n");
+"usage: xargs [-0] [-t] [-n number [-x]] [-s size] [utility [argument ...]]\n");
 	exit(1);
 }