1 /* vi: set sw=4 ts=4: */
3 * cat implementation for busybox
5 * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 /* BB_AUDIT SUSv3 compliant */
24 /* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
26 /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
28 * This is a new implementation of 'cat' which aims to be SUSv3 compliant.
30 * Changes from the previous implementation include:
31 * 1) Multiple '-' args are accepted as required by SUSv3. The previous
32 * implementation would close stdin and segfault on a subsequent '-'.
33 * 2) The '-u' options is required by SUSv3. Note that the specified
34 * behavior for '-u' is done by default, so all we need do is accept
43 int cat_main(int argc, char **argv)
46 int retval = EXIT_SUCCESS;
48 bb_getopt_ulflags(argc, argv, "u");
56 if ((f = bb_wfopen_input(*argv)) != NULL) {
57 int r = bb_copyfd_eof(fileno(f), STDOUT_FILENO);
58 bb_fclose_nonstdin(f);
63 retval = EXIT_FAILURE;