text: /* vi: set sw=4 ts=4: */
  /*
   * Mini ar implementation for busybox
   *
   * Copyright (C) 2000 by Glenn McGrath
   * Written by Glenn McGrath <bug1@iinet.net.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
   *
   * There is no single standard to adhere to so ar may not portable
   * between different systems
   * http://www.unix-systems.org/single_unix_specification_v2/xcu/ar.html
   */
  
  #include <fcntl.h>
  #include <getopt.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <time.h>
  #include <utime.h>
  #include <unistd.h>
  
  #include "unarchive.h"
  #include "busybox.h"
  
  static void header_verbose_list_ar(const file_header_t *file_header)
  {
  	const char *mode = bb_mode_string(file_header->mode);
  	char *mtime;
  
  	mtime = ctime(&file_header->mtime);
  	mtime[16] = ' ';
  	memmove(&mtime[17], &mtime[20], 4);
  	mtime[21] = '\0';
  	printf("%s %d/%d%7d %s %s\n", &mode[1], file_header->uid, file_header->gid, (int) file_header->size, &mtime[4], file_header->name);
  }
  
  #define AR_CTX_PRINT			0x01
  #define AR_CTX_LIST				0x02
  #define AR_CTX_EXTRACT			0x04
  #define AR_OPT_PRESERVE_DATE	0x08
  #define AR_OPT_VERBOSE			0x10
  #define AR_OPT_CREATE			0x20
  
  extern int ar_main(int argc, char **argv)
  {
  	archive_handle_t *archive_handle;
  	unsigned long opt;
  	char magic[8];
  
  	archive_handle = init_handle();
  
  	bb_opt_complementaly = "p~tx:t~px:x~pt";
  	opt = bb_getopt_ulflags(argc, argv, "ptxovc");
  
  	if ((opt & 0x80000000UL) || (optind == argc)) {
  		bb_show_usage();
  	}
  
  	if (opt & AR_CTX_PRINT) {
  		archive_handle->action_data = data_extract_to_stdout;
  	}
  	if (opt & AR_CTX_LIST) {
  		archive_handle->action_header = header_list;
  	}
  	if (opt & AR_CTX_EXTRACT) {
  		archive_handle->action_data = data_extract_all;
  	}
  	if (opt & AR_OPT_PRESERVE_DATE) {
  		archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
  	}
  	if (opt & AR_OPT_VERBOSE) {
  		archive_handle->action_header = header_verbose_list_ar;
  	}
  	if (opt & AR_OPT_CREATE) {
  		bb_error_msg_and_die("Archive creation not supported.  Install binutils 'ar'.");
  	}
  
  	archive_handle->src_fd = bb_xopen(argv[optind++], O_RDONLY);
  
  	while (optind < argc) {
  		archive_handle->filter = filter_accept_list;
  		archive_handle->accept = llist_add_to(archive_handle->accept, argv[optind++]);
  	}
  
  	archive_xread_all(archive_handle, magic, 7);
  	if (strncmp(magic, "!<arch>", 7) != 0) {
  		bb_error_msg_and_die("Invalid ar magic");
  	}
  	archive_handle->offset += 7;
  
  	while (get_header_ar(archive_handle) == EXIT_SUCCESS);
  
  	return EXIT_SUCCESS;
  }
  