LXR busybox/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 source tree.
   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//usage:#define yes_trivial_usage
  22//usage:       "[STRING]"
  23//usage:#define yes_full_usage "\n\n"
  24//usage:       "Repeatedly output a line with STRING, or 'y'"
  25
  26int yes_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  27int yes_main(int argc UNUSED_PARAM, char **argv)
  28{
  29        char **pp;
  30
  31        argv[0] = (char*)"y";
  32        if (argv[1])
  33                ++argv;
  34
  35        do {
  36                pp = argv;
  37                while (1) {
  38                        fputs(*pp, stdout);
  39                        if (!*++pp)
  40                                break;
  41                        putchar(' ');
  42                }
  43        } while (putchar('\n') != EOF);
  44
  45        bb_perror_nomsg_and_die();
  46}
  47