Show ar.c syntax highlighted
/* 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 <string.h>
#include <getopt.h>
#include <unistd.h>
#include "busybox.h"
extern int ar_main(int argc, char **argv)
{
FILE *src_stream = NULL;
char **extract_names = NULL;
char ar_magic[8];
int extract_function = extract_unconditional;
int opt;
int num_of_entries = 0;
extern off_t archive_offset;
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");
/* check ar magic */
fread(ar_magic, 1, 8, src_stream);
archive_offset = 8;
if (strncmp(ar_magic,"!<arch>",7) != 0) {
error_msg_and_die("invalid magic");
}
/* Create a list of files to extract */
while (optind < argc) {
extract_names = xrealloc(extract_names, sizeof(char *) * (num_of_entries + 2));
extract_names[num_of_entries] = xstrdup(argv[optind]);
num_of_entries++;
extract_names[num_of_entries] = NULL;
optind++;
}
unarchive(src_stream, stdout, &get_header_ar, extract_function, "./", extract_names);
return EXIT_SUCCESS;
}
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