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/* yes - output a string repeatedly until killed
Copyright (C) 1991-1997, 1999, 2000 Free Software Foundation, Inc.
This program 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 2, or (at your option)
any later version.
This program 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 this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* David MacKenzie <djm@gnu.ai.mit.edu> */
#include <config.h>
#include <stdio.h>
#include <sys/types.h>
#include <getopt.h>
#include "error.h"
#include "system.h"
#include "long-options.h"
#include "closeout.h"
/* The official name of this program (e.g., no `g' prefix). */
#define PROGRAM_NAME "yes"
#define AUTHORS "David MacKenzie"
/* How many iterations between ferror checks. */
#define UNROLL 10000
/* The name this program was run with. */
char *program_name;
void
usage (int status)
{
if (status != 0)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
printf (_("Usage: %s [OPTION]... [STRING]...\n"), program_name);
printf (_("\
Repeatedly output a line with all specified STRING(s), or `y'.\n\
\n\
--help display this help and exit\n\
--version output version information and exit\n"));
puts (_("\nReport bugs to <bug-sh-utils@gnu.org>."));
}
exit (status);
}
int
main (int argc, char **argv)
{
program_name = argv[0];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
atexit (close_stdout);
/* Don't recognize --help or --version if POSIXLY_CORRECT is set. */
if (getenv ("POSIXLY_CORRECT") == NULL)
parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
AUTHORS, usage);
if (argc == 1)
{
while (1)
{
int i;
for (i = 0; i < UNROLL; i++)
puts ("y");
if (ferror (stdout))
break;
}
}
else
{
while (1)
{
int i;
for (i = 0; i < UNROLL; i++)
{
int j;
for (j = 1; j < argc; j++)
{
fputs (argv[j], stdout);
putchar (j == argc - 1 ? '\n' : ' ');
}
}
if (ferror (stdout))
break;
}
}
error (0, errno, "standard output");
exit (EXIT_FAILURE);
}
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