__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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/*
* rl - command-line interface to read a line from the standard input
* (or another fd) using readline.
*
* usage: rl [-p prompt] [-u unit] [-d default] [-n nchars]
*/
/* Copyright (C) 1987-2009 Free Software Foundation, Inc.
This file is part of the GNU Readline Library (Readline), a library for
reading lines of text with interactive input and history editing.
Readline is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Readline is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Readline. If not, see <http://www.gnu.org/licenses/>.
*/
#if defined (HAVE_CONFIG_H)
# include <config.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#else
extern int getopt();
extern int sleep();
#endif
#include <stdio.h>
#include <sys/types.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#else
extern void exit();
#endif
#if defined (READLINE_LIBRARY)
# include "posixstat.h"
# include "readline.h"
# include "history.h"
#else
# include <sys/stat.h>
# include <readline/readline.h>
# include <readline/history.h>
#endif
extern int optind;
extern char *optarg;
#if !defined (strchr) && !defined (__STDC__)
extern char *strrchr();
#endif
static char *progname;
static char *deftext;
static int
event_hook ()
{
fprintf (stderr, "ding!\n");
sleep (1);
return 0;
}
static int
set_deftext ()
{
if (deftext)
{
rl_insert_text (deftext);
deftext = (char *)NULL;
rl_startup_hook = (rl_hook_func_t *)NULL;
}
return 0;
}
static void
usage()
{
fprintf (stderr, "%s: usage: %s [-p prompt] [-u unit] [-d default] [-n nchars]\n",
progname, progname);
}
int
main (argc, argv)
int argc;
char **argv;
{
char *temp, *prompt;
struct stat sb;
int opt, fd, nch;
FILE *ifp;
progname = strrchr(argv[0], '/');
if (progname == 0)
progname = argv[0];
else
progname++;
/* defaults */
prompt = "readline$ ";
fd = nch = 0;
deftext = (char *)0;
while ((opt = getopt(argc, argv, "p:u:d:n:")) != EOF)
{
switch (opt)
{
case 'p':
prompt = optarg;
break;
case 'u':
fd = atoi(optarg);
if (fd < 0)
{
fprintf (stderr, "%s: bad file descriptor `%s'\n", progname, optarg);
exit (2);
}
break;
case 'd':
deftext = optarg;
break;
case 'n':
nch = atoi(optarg);
if (nch < 0)
{
fprintf (stderr, "%s: bad value for -n: `%s'\n", progname, optarg);
exit (2);
}
break;
default:
usage ();
exit (2);
}
}
if (fd != 0)
{
if (fstat (fd, &sb) < 0)
{
fprintf (stderr, "%s: %d: bad file descriptor\n", progname, fd);
exit (1);
}
ifp = fdopen (fd, "r");
rl_instream = ifp;
}
if (deftext && *deftext)
rl_startup_hook = set_deftext;
if (nch > 0)
rl_num_chars_to_read = nch;
rl_event_hook = event_hook;
temp = readline (prompt);
/* Test for EOF. */
if (temp == 0)
exit (1);
printf ("%s\n", temp);
exit (0);
}