Line data    Source code

       1             : /* yes - output a string repeatedly until killed
       2             :    Copyright (C) 1991-1997, 1999-2004, 2007 Free Software Foundation, Inc.
       3             : 
       4             :    This program is free software: you can redistribute it and/or modify
       5             :    it under the terms of the GNU General Public License as published by
       6             :    the Free Software Foundation, either version 3 of the License, or
       7             :    (at your option) any later version.
       8             : 
       9             :    This program is distributed in the hope that it will be useful,
      10             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12             :    GNU General Public License for more details.
      13             : 
      14             :    You should have received a copy of the GNU General Public License
      15             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
      16             : 
      17             : /* David MacKenzie <djm@gnu.ai.mit.edu> */
      18             : 
      19             : #include <config.h>
      20             : #include <stdio.h>
      21             : #include <sys/types.h>
      22             : #include <getopt.h>
      23             : 
      24             : #include "system.h"
      25             : 
      26             : #include "error.h"
      27             : #include "long-options.h"
      28             : 
      29             : /* The official name of this program (e.g., no `g' prefix).  */
      30             : #define PROGRAM_NAME "yes"
      31             : 
      32             : #define AUTHORS "David MacKenzie"
      33             : 
      34             : /* The name this program was run with. */
      35             : char *program_name;
      36             : 
      37             : void
      38           9 : usage (int status)
      39             : {
      40           9 :   if (status != EXIT_SUCCESS)
      41           7 :     fprintf (stderr, _("Try `%s --help' for more information.\n"),
      42             :              program_name);
      43             :   else
      44             :     {
      45           2 :       printf (_("\
      46             : Usage: %s [STRING]...\n\
      47             :   or:  %s OPTION\n\
      48             : "),
      49             :               program_name, program_name);
      50             : 
      51           2 :       fputs (_("\
      52             : Repeatedly output a line with all specified STRING(s), or `y'.\n\
      53             : \n\
      54             : "), stdout);
      55           2 :       fputs (HELP_OPTION_DESCRIPTION, stdout);
      56           2 :       fputs (VERSION_OPTION_DESCRIPTION, stdout);
      57           2 :       emit_bug_reporting_address ();
      58             :     }
      59           9 :   exit (status);
      60             : }
      61             : 
      62             : int
      63          10 : main (int argc, char **argv)
      64             : {
      65             :   initialize_main (&argc, &argv);
      66          10 :   program_name = argv[0];
      67          10 :   setlocale (LC_ALL, "");
      68             :   bindtextdomain (PACKAGE, LOCALEDIR);
      69             :   textdomain (PACKAGE);
      70             : 
      71          10 :   atexit (close_stdout);
      72             : 
      73          10 :   parse_long_options (argc, argv, PROGRAM_NAME, PACKAGE_NAME, VERSION,
      74             :                       usage, AUTHORS, (char const *) NULL);
      75           7 :   if (getopt_long (argc, argv, "+", NULL, NULL) != -1)
      76           7 :     usage (EXIT_FAILURE);
      77             : 
      78           0 :   if (argc <= optind)
      79             :     {
      80           0 :       optind = argc;
      81           0 :       argv[argc++] = "y";
      82             :     }
      83             : 
      84             :   for (;;)
      85           0 :     {
      86             :       int i;
      87           0 :       for (i = optind; i < argc; i++)
      88           0 :         if (fputs (argv[i], stdout) == EOF
      89           0 :             || putchar (i == argc - 1 ? '\n' : ' ') == EOF)
      90             :           {
      91           0 :             error (0, errno, _("standard output"));
      92           0 :             exit (EXIT_FAILURE);
      93             :           }
      94             :     }
      95             : }