1 /* vi: set sw=4 ts=4: */
3 * Mini ar implementation for busybox
5 * Copyright (C) 2000 by Glenn McGrath
6 * Written by Glenn McGrath <bug1@optushome.com.au> 1 June 2000
8 * Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 extern int ar_main(int argc, char **argv)
34 FILE *src_stream = NULL;
35 char **extract_names = NULL;
37 int extract_function = extract_unconditional;
39 int num_of_entries = 0;
40 extern off_t archive_offset;
42 while ((opt = getopt(argc, argv, "ovtpx")) != -1) {
45 extract_function |= extract_preserve_date;
48 extract_function |= extract_verbose_list;
51 extract_function |= extract_list;
54 extract_function |= extract_to_stdout;
57 extract_function |= extract_all_to_fs;
64 /* check the src filename was specified */
69 src_stream = xfopen(argv[optind++], "r");
72 fread(ar_magic, 1, 8, src_stream);
74 if (strncmp(ar_magic,"!<arch>",7) != 0) {
75 error_msg_and_die("invalid magic");
78 /* Create a list of files to extract */
79 while (optind < argc) {
80 extract_names = xrealloc(extract_names, sizeof(char *) * (num_of_entries + 2));
81 extract_names[num_of_entries] = xstrdup(argv[optind]);
83 extract_names[num_of_entries] = NULL;
87 unarchive(src_stream, stdout, &get_header_ar, extract_function, "./", extract_names);