busybox/ar.c
2001-06-13 07:26:39 +00:00

90 lines
2.4 KiB
C

/* vi: set sw=4 ts=4: */
/*
* Mini ar implementation for busybox
*
* Copyright (C) 2000 by Glenn McGrath
* Written by Glenn McGrath <bug1@optushome.com.au> 1 June 2000
*
* Based in part on BusyBox tar, Debian dpkg-deb and GNU ar.
*
* 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 <fcntl.h>
#include <stdlib.h>
#include <getopt.h>
#include <unistd.h>
#include "busybox.h"
extern int ar_main(int argc, char **argv)
{
FILE *src_stream = NULL;
int extract_function = 0, opt = 0;
file_headers_t *head;
file_headers_t *ar_extract_list = NULL;
while ((opt = getopt(argc, argv, "ovtpx")) != -1) {
switch (opt) {
case 'o':
extract_function |= extract_preserve_date;
break;
case 'v':
extract_function |= extract_verbose_list;
break;
case 't':
extract_function |= extract_list;
break;
case 'p':
extract_function |= extract_to_stdout;
break;
case 'x':
extract_function |= extract_all_to_fs;
break;
default:
show_usage();
}
}
/* check the src filename was specified */
if (optind == argc) {
show_usage();
}
src_stream = xfopen(argv[optind++], "r");
head = get_ar_headers(src_stream);
/* find files to extract or display */
/* search through argv and build extract list */
ar_extract_list = (file_headers_t *) xcalloc(1, sizeof(file_headers_t));
if (optind < argc) {
while (optind < argc) {
ar_extract_list = add_from_archive_list(head, ar_extract_list, argv[optind]);
optind++;
}
} else {
ar_extract_list = head;
}
/* If there isnt even one possible entry then abort */
if (ar_extract_list->name == NULL) {
error_msg_and_die("No files to extract");
}
fseek(src_stream, 0, SEEK_SET);
extract_archive(src_stream, stdout, ar_extract_list, extract_function, "./");
return EXIT_SUCCESS;
}