archival/unzip.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Mini unzip implementation for busybox
   4  *
   5  * Copyright (C) 2001 by Laurence Anderson
   6  *
   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.
  11  *
  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.
  16  *
  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
  20  *
  21  */
  22
  23 #include <fcntl.h>
  24 #include <getopt.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <unistd.h>
  28 #include "unarchive.h"
  29 #include "busybox.h"
  30
  31 extern int unzip_main(int argc, char **argv)
  32 {
  33         FILE *src_stream;
  34         int extract_function = extract_all_to_fs | extract_create_leading_dirs;
  35         char **extract_names = NULL;
  36         char **exclude_names = NULL;
  37         int opt = 0;
  38         int num_of_entries = 0;
  39         int exclude = 0;
  40         char *outdir = "./";
  41         FILE *msgout = stdout;
  42
  43         while ((opt = getopt(argc, argv, "lnopqxd:")) != -1) {
  44                 switch (opt) {
  45                         case 'l':
  46                                 extract_function |= extract_verbose_list;
  47                                 extract_function ^= extract_all_to_fs;
  48                                 break;
  49                         case 'n':
  50                                 break;
  51                         case 'o':
  52                                 extract_function |= extract_unconditional;
  53                                 break;
  54                         case 'p':
  55                                 extract_function |= extract_to_stdout;
  56                                 extract_function ^= extract_all_to_fs;
  57                                 /* FALLTHROUGH */
  58                         case 'q':
  59                                 msgout = xfopen("/dev/null", "w");
  60                                 break;
  61                         case 'd':
  62                                 outdir = xstrdup(optarg);
  63                                 strcat(outdir, "/");
  64                                 break;
  65                         case 'x':
  66                                 exclude = 1;
  67                                 break;
  68                 }
  69         }
  70
  71         if (optind == argc) {
  72                 show_usage();
  73         }
  74
  75         if (*argv[optind] == '-') src_stream = stdin;
  76         else src_stream = xfopen(argv[optind++], "r");
  77
  78         while (optind < argc) {
  79                 if (exclude) {
  80                         exclude_names = xrealloc(exclude_names, sizeof(char *) * (num_of_entries + 2));
  81                         exclude_names[num_of_entries] = xstrdup(argv[optind]);
  82                 } else {
  83                         extract_names = xrealloc(extract_names, sizeof(char *) * (num_of_entries + 2));
  84                         extract_names[num_of_entries] = xstrdup(argv[optind]);
  85                 }
  86                 num_of_entries++;
  87                 if (exclude) exclude_names[num_of_entries] = NULL;
  88                 else extract_names[num_of_entries] = NULL;
  89                 optind++;
  90         }
  91
  92         unarchive(src_stream, msgout, &get_header_zip, extract_function, outdir, extract_names, exclude_names);
  93         return EXIT_SUCCESS;
  94 }