Date: Mon, 21 Sep 2020 17:06:37 +0000 (UTC) From: Kyle Evans <kevans@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r365954 - head/usr.bin/xargs Message-ID: <202009211706.08LH6bS7054372@repo.freebsd.org>
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Author: kevans Date: Mon Sep 21 17:06:36 2020 New Revision: 365954 URL: https://svnweb.freebsd.org/changeset/base/365954 Log: xargs: add some long options for GNU compatibility These are low-effort to add, so let's just do it. Reported by: "LukeShu" on Hacker News (-r / --no-run-if-empty) MFC after: 1 week Modified: head/usr.bin/xargs/xargs.1 head/usr.bin/xargs/xargs.c Modified: head/usr.bin/xargs/xargs.1 ============================================================================== --- head/usr.bin/xargs/xargs.1 Mon Sep 21 16:59:12 2020 (r365953) +++ head/usr.bin/xargs/xargs.1 Mon Sep 21 17:06:36 2020 (r365954) @@ -33,7 +33,7 @@ .\" $FreeBSD$ .\" $xMach: xargs.1,v 1.2 2002/02/23 05:23:37 tim Exp $ .\" -.Dd June 11, 2020 +.Dd September 21, 2020 .Dt XARGS 1 .Os .Sh NAME @@ -84,7 +84,7 @@ Any single character, including newlines, may be escap .Pp The options are as follows: .Bl -tag -width indent -.It Fl 0 +.It Fl 0 , Fl -null Change .Nm to expect NUL @@ -175,7 +175,7 @@ If EOF is reached and fewer lines have been read than then .Ar utility will be called with the available lines. -.It Fl n Ar number +.It Fl n Ar number , Fl -max-args= Ns Ar number Set the maximum number of arguments taken from standard input for each invocation of .Ar utility . @@ -201,7 +201,7 @@ in the child process before executing the command. This is useful if you want .Nm to run an interactive application. -.It Fl P Ar maxprocs +.It Fl P Ar maxprocs , Fl -max-procs= Ns Ar maxprocs Parallel mode: run at most .Ar maxprocs invocations of @@ -212,7 +212,7 @@ If is set to 0, .Nm will run as many processes as possible. -.It Fl p +.It Fl p , Fl -interactive Echo each command to be executed and ask the user whether it should be executed. An affirmative response, @@ -221,7 +221,7 @@ in the POSIX locale, causes the command to be executed, any other response causes it to be skipped. No commands are executed if the process is not attached to a terminal. -.It Fl r +.It Fl r , Fl -no-run-if-empty Compatibility with GNU .Nm . The GNU version of @@ -263,7 +263,7 @@ can use for replacements. The default for .Ar replsize is 255. -.It Fl s Ar size +.It Fl s Ar size , Fl -max-chars= Ns Ar size Set the maximum number of bytes for the command line length provided to .Ar utility . The sum of the length of the utility name, the arguments passed to @@ -277,10 +277,10 @@ The current default value for is .Dv ARG_MAX - 4096. -.It Fl t +.It Fl t , Fl -verbose Echo the command to be executed to standard error immediately before it is executed. -.It Fl x +.It Fl x , Fl -exit Force .Nm to terminate immediately if a command line containing Modified: head/usr.bin/xargs/xargs.c ============================================================================== --- head/usr.bin/xargs/xargs.c Mon Sep 21 16:59:12 2020 (r365953) +++ head/usr.bin/xargs/xargs.c Mon Sep 21 17:06:36 2020 (r365954) @@ -56,6 +56,7 @@ __FBSDID("$FreeBSD$"); #include <err.h> #include <errno.h> #include <fcntl.h> +#include <getopt.h> #include <langinfo.h> #include <locale.h> #include <paths.h> @@ -98,6 +99,22 @@ static volatile int childerr; extern char **environ; +static const char *optstr = "+0E:I:J:L:n:oP:pR:S:s:rtx"; + +static const struct option long_options[] = +{ + {"exit", no_argument, NULL, 'x'}, + {"interactive", no_argument, NULL, 'p'}, + {"max-args", required_argument, NULL, 'n'}, + {"max-chars", required_argument, NULL, 's'}, + {"max-procs", required_argument, NULL, 'P'}, + {"no-run-if-empty", no_argument, NULL, 'r'}, + {"null", no_argument, NULL, '0'}, + {"verbose", no_argument, NULL, 't'}, + + {NULL, no_argument, NULL, 0}, +}; + int main(int argc, char *argv[]) { @@ -137,7 +154,7 @@ main(int argc, char *argv[]) nline -= strlen(*ep++) + 1 + sizeof(*ep); } maxprocs = 1; - while ((ch = getopt(argc, argv, "0E:I:J:L:n:oP:pR:S:s:rtx")) != -1) + while ((ch = getopt_long(argc, argv, optstr, long_options, NULL)) != -1) switch (ch) { case 'E': eofstr = optarg;
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