box/coreutils/yes.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * yes implementation for busybox
   4  *
   5  * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
   6  *
   7  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
   8  */
   9
  10 /* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
  11
  12 /* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
  13  *
  14  * Size reductions and removed redundant applet name prefix from error messages.
  15  */
  16
  17 #include "libbb.h"
  18
  19 /* This is a NOFORK applet. Be very careful! */
  20
  21 int yes_main(int argc, char **argv);
  22 int yes_main(int argc, char **argv)
  23 {
  24         char **first_arg;
  25
  26         argv[0] = (char*)"y";
  27         if (argc != 1) {
  28                 ++argv;
  29         }
  30
  31         first_arg = argv;
  32         do {
  33                 while (1) {
  34                         fputs(*argv, stdout);
  35                         if (!*++argv)
  36                                 break;
  37                         putchar(' ');
  38                 }
  39                 argv = first_arg;
  40         } while (putchar('\n') != EOF);
  41
  42         bb_perror_nomsg_and_die();
  43 }