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116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
/* yes - output a string repeatedly until killed
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Copyright (C) 1991-1997, 1999-2003 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* David MacKenzie <djm@gnu.ai.mit.edu> */
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#include <config.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <getopt.h>
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#include "system.h"
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#include "closeout.h"
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#include "error.h"
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#include "long-options.h"
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/* The official name of this program (e.g., no `g' prefix). */
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#define PROGRAM_NAME "yes"
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#define AUTHORS "David MacKenzie"
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/* How many iterations between ferror checks. */
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#define UNROLL 10000
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/* The name this program was run with. */
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char *program_name;
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void
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usage (int status)
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{
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if (status != 0)
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fprintf (stderr, _("Try `%s --help' for more information.\n"),
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program_name);
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else
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{
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printf (_("\
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Usage: %s [STRING]...\n\
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or: %s OPTION\n\
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"),
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program_name, program_name);
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fputs (_("\
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Repeatedly output a line with all specified STRING(s), or `y'.\n\
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\n\
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"), stdout);
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fputs (HELP_OPTION_DESCRIPTION, stdout);
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fputs (VERSION_OPTION_DESCRIPTION, stdout);
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printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
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}
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exit (status);
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}
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int
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main (int argc, char **argv)
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{
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initialize_main (&argc, &argv);
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program_name = argv[0];
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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atexit (close_stdout);
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/* Don't recognize --help or --version if POSIXLY_CORRECT is set. */
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if (getenv ("POSIXLY_CORRECT") == NULL)
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parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
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AUTHORS, usage);
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if (argc == 1)
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{
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while (1)
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{
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int i;
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for (i = 0; i < UNROLL; i++)
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puts ("y");
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if (ferror (stdout))
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break;
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}
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}
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else
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{
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while (1)
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{
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int i;
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for (i = 0; i < UNROLL; i++)
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{
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int j;
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for (j = 1; j < argc; j++)
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{
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fputs (argv[j], stdout);
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putchar (j == argc - 1 ? '\n' : ' ');
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}
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}
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if (ferror (stdout))
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break;
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}
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}
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error (0, errno, "standard output");
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exit (EXIT_FAILURE);
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}
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