busybox/coreutils/yes.c

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/* vi: set sw=4 ts=4: */
/*
* Mini yes implementation for busybox
*
* Copyright (C) 2000 Edward Betts <edward@debian.org>.
*
* 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 of the License, 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
*
*/
#include "internal.h"
#include <stdio.h>
extern int yes_main(int argc, char **argv)
{
int i;
if (argc >=1 && *argv[1]=='-') {
usage("yes [OPTION]... [STRING]...\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
"\nRepeatedly outputs a line with all specified STRING(s), or `y'.\n"
#endif
);
}
if (argc == 1) {
while (1)
if (puts("y") == EOF) {
perror("yes");
exit(FALSE);
}
}
while (1)
for (i = 1; i < argc; i++)
if (fputs(argv[i], stdout) == EOF
|| putchar(i == argc - 1 ? '\n' : ' ') == EOF) {
perror("yes");
exit(FALSE);
}
exit(TRUE);
}