Implement XCU5 prompt mode (-p).
This commit is contained in:
kleink
parent
4ce1b28f8c
commit
1a2a0445fa
|
|
@ -1,4 +1,4 @@
|
|||
.\" $NetBSD: xargs.1,v 1.9 1999/01/12 00:07:20 lukem Exp $
|
||||
.\" $NetBSD: xargs.1,v 1.10 1999/12/22 14:41:00 kleink Exp $
|
||||
.\"
|
||||
.\" Copyright (c) 1990, 1991, 1993
|
||||
.\" The Regents of the University of California. All rights reserved.
|
||||
|
|
@ -37,7 +37,7 @@
|
|||
.\"
|
||||
.\" @(#)xargs.1 8.1 (Berkeley) 6/6/93
|
||||
.\"
|
||||
.Dd January 12, 1999
|
||||
.Dd December 21, 1999
|
||||
.Dt XARGS 1
|
||||
.Os
|
||||
.Sh NAME
|
||||
|
|
@ -46,6 +46,7 @@
|
|||
.Sh SYNOPSIS
|
||||
.Nm
|
||||
.Op Fl 0
|
||||
.Op Fl p
|
||||
.Op Fl t
|
||||
.Oo Op Fl x
|
||||
.Fl n Ar number
|
||||
|
|
@ -107,6 +108,16 @@ arguments remaining for the last invocation of
|
|||
The current default value for
|
||||
.Ar number
|
||||
is 5000.
|
||||
.It Fl p
|
||||
Prompt mode: immediately before each command execution the user is prompted
|
||||
whether to execute the command instance. If an affirmative response is read
|
||||
from
|
||||
.Pa /dev/tty
|
||||
the command will be executed; otherwise this particular invocation will be
|
||||
skipped.
|
||||
This option implies the
|
||||
.Fl t
|
||||
option.
|
||||
.It Fl s Ar size
|
||||
Set the maximum number of bytes for the command line length provided to
|
||||
.Ar utility .
|
||||
|
|
@ -148,6 +159,11 @@ command line cannot be assembled,
|
|||
.Ar utility
|
||||
cannot be invoked, an invocation of the utility is terminated by a signal
|
||||
or an invocation of the utility exits with a value of 255.
|
||||
.Sh FILES
|
||||
.Bl -tag -width /dev/tty -compact
|
||||
.It Pa /dev/tty
|
||||
used to read responses in prompt mode
|
||||
.El
|
||||
.Sh DIAGNOSTICS
|
||||
.Nm
|
||||
exits with one of the following values:
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: xargs.c,v 1.11 1998/12/20 15:06:53 christos Exp $ */
|
||||
/* $NetBSD: xargs.c,v 1.12 1999/12/22 14:41:01 kleink Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1990, 1993
|
||||
|
|
@ -46,27 +46,32 @@ __COPYRIGHT("@(#) Copyright (c) 1990, 1993\n\
|
|||
#if 0
|
||||
static char sccsid[] = "@(#)xargs.c 8.1 (Berkeley) 6/6/93";
|
||||
#endif
|
||||
__RCSID("$NetBSD: xargs.c,v 1.11 1998/12/20 15:06:53 christos Exp $");
|
||||
__RCSID("$NetBSD: xargs.c,v 1.12 1999/12/22 14:41:01 kleink Exp $");
|
||||
#endif /* not lint */
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/wait.h>
|
||||
#include <err.h>
|
||||
#include <errno.h>
|
||||
#include <langinfo.h>
|
||||
#include <limits.h>
|
||||
#include <locale.h>
|
||||
#include <paths.h>
|
||||
#include <regex.h>
|
||||
#include <signal.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <limits.h>
|
||||
#include <locale.h>
|
||||
#include <signal.h>
|
||||
#include <err.h>
|
||||
#include "pathnames.h"
|
||||
|
||||
int tflag, zflag, rval;
|
||||
static int pflag, tflag, zflag, rval;
|
||||
static FILE *promptfile;
|
||||
static regex_t yesexpr;
|
||||
|
||||
void run __P((char **));
|
||||
int main __P((int, char **));
|
||||
void usage __P((void));
|
||||
static void run __P((char **));
|
||||
int main __P((int, char **));
|
||||
static void usage __P((void));
|
||||
|
||||
int
|
||||
main(argc, argv)
|
||||
|
|
@ -96,7 +101,7 @@ main(argc, argv)
|
|||
nargs = 5000;
|
||||
nline = ARG_MAX - 4 * 1024;
|
||||
nflag = xflag = 0;
|
||||
while ((ch = getopt(argc, argv, "0n:s:tx")) != -1)
|
||||
while ((ch = getopt(argc, argv, "0n:ps:tx")) != -1)
|
||||
switch(ch) {
|
||||
case '0':
|
||||
zflag = 1;
|
||||
|
|
@ -106,6 +111,9 @@ main(argc, argv)
|
|||
if ((nargs = atoi(optarg)) <= 0)
|
||||
errx(1, "illegal argument count");
|
||||
break;
|
||||
case 'p':
|
||||
pflag = tflag = 1;
|
||||
break;
|
||||
case 's':
|
||||
nline = atoi(optarg);
|
||||
break;
|
||||
|
|
@ -171,6 +179,20 @@ main(argc, argv)
|
|||
err(1, "malloc");
|
||||
ebp = (argp = p = bbp) + nline - 1;
|
||||
|
||||
if (pflag) {
|
||||
int error;
|
||||
|
||||
if ((promptfile = fopen(_PATH_TTY, "r")) == NULL)
|
||||
err(1, "prompt mode: cannot open input");
|
||||
if ((error = regcomp(&yesexpr, nl_langinfo(YESEXPR), REG_NOSUB))
|
||||
!= 0) {
|
||||
char msg[NL_TEXTMAX];
|
||||
|
||||
(void)regerror(error, NULL, msg, sizeof (msg));
|
||||
err(1, "cannot compile yesexpr: %s", msg);
|
||||
}
|
||||
}
|
||||
|
||||
for (insingle = indouble = 0;;)
|
||||
switch(ch = getchar()) {
|
||||
case EOF:
|
||||
|
|
@ -269,7 +291,7 @@ addch: if (p < ebp) {
|
|||
/* NOTREACHED */
|
||||
}
|
||||
|
||||
void
|
||||
static void
|
||||
run(argv)
|
||||
char **argv;
|
||||
{
|
||||
|
|
@ -282,8 +304,20 @@ run(argv)
|
|||
(void)fprintf(stderr, "%s", *argv);
|
||||
for (p = argv + 1; *p; ++p)
|
||||
(void)fprintf(stderr, " %s", *p);
|
||||
(void)fprintf(stderr, "\n");
|
||||
(void)fflush(stderr);
|
||||
if (pflag) {
|
||||
char buf[LINE_MAX + 1];
|
||||
|
||||
(void)fprintf(stderr, "?...");
|
||||
fflush(stderr);
|
||||
if (fgets(buf, sizeof (buf), promptfile) == NULL) {
|
||||
rval = 1;
|
||||
return;
|
||||
}
|
||||
if (regexec(&yesexpr, buf, 0, NULL, 0) != 0)
|
||||
return;
|
||||
} else {
|
||||
(void)fprintf(stderr, "\n");
|
||||
}
|
||||
}
|
||||
noinvoke = 0;
|
||||
switch(pid = vfork()) {
|
||||
|
|
@ -331,10 +365,10 @@ run(argv)
|
|||
}
|
||||
}
|
||||
|
||||
void
|
||||
static void
|
||||
usage()
|
||||
{
|
||||
(void)fprintf(stderr,
|
||||
"usage: xargs [-0t] [-n number [-x]] [-s size] [utility [argument ...]]\n");
|
||||
"usage: xargs [-0pt] [-n number [-x]] [-s size] [utility [argument ...]]\n");
|
||||
exit(1);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue