src/rmdir.c

   1 /* rmdir -- remove directories
   2    Copyright (C) 90, 91, 95, 96, 97, 1998 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 /* Options:
  19    -p, --parent         Remove any parent dirs that are explicitly mentioned
  20                         in an argument, if they become empty after the
  21                         argument file is removed.
  22
  23    David MacKenzie <djm@ai.mit.edu>  */
  24
  25 #include <config.h>
  26 #include <stdio.h>
  27 #include <getopt.h>
  28 #include <sys/types.h>
  29
  30 #include "system.h"
  31 #include "closeout.h"
  32 #include "error.h"
  33
  34 void strip_trailing_slashes ();
  35
  36 /* The name this program was run with. */
  37 char *program_name;
  38
  39 /* If nonzero, remove empty parent directories. */
  40 static int empty_paths;
  41
  42 /* If nonzero, don't treat failure to remove a nonempty directory
  43    as an error.  */
  44 static int ignore_fail_on_non_empty;
  45
  46 /* If nonzero, output a diagnostic for every directory processed.  */
  47 static int verbose;
  48
  49 /* If nonzero, display usage information and exit.  */
  50 static int show_help;
  51
  52 /* If nonzero, print the version on standard output and exit.  */
  53 static int show_version;
  54
  55 static struct option const longopts[] =
  56 {
  57   /* Don't name this `--force' because it's not close enough in meaning
  58      to e.g. rm's -f option.  */
  59   {"ignore-fail-on-non-empty", no_argument, NULL, 13},
  60
  61   {"path", no_argument, NULL, 'p'},
  62   {"parents", no_argument, NULL, 'p'},
  63   {"verbose", no_argument, NULL, 14},
  64   {"help", no_argument, &show_help, 1},
  65   {"version", no_argument, &show_version, 1},
  66   {NULL, 0, NULL, 0}
  67 };
  68
  69 /* Remove any empty parent directories of PATH.
  70    If PATH contains slash characters, at least one of them
  71    (beginning with the rightmost) is replaced with a NUL byte.  */
  72
  73 static int
  74 remove_parents (char *path)
  75 {
  76   char *slash;
  77   int fail = 0;
  78
  79   while (1)
  80     {
  81       slash = strrchr (path, '/');
  82       if (slash == NULL)
  83         break;
  84       /* Remove any characters after the slash, skipping any extra
  85          slashes in a row. */
  86       while (slash > path && *slash == '/')
  87         --slash;
  88       slash[1] = 0;
  89       fail = rmdir (path);
  90
  91       /* Give a diagnostic for each successful removal if --verbose.  */
  92       if (verbose && !fail)
  93         error (0, errno, _("removed directory, %s"), path);
  94
  95       if (fail)
  96         {
  97           /* Give a diagnostic and set fail if not --ignore.  */
  98           if (!ignore_fail_on_non_empty || errno != ENOTEMPTY)
  99             {
 100               error (0, errno, "%s", path);
 101               fail = 1;
 102             }
 103           break;
 104         }
 105     }
 106   return fail;
 107 }
 108
 109 static void
 110 usage (int status)
 111 {
 112   if (status != 0)
 113     fprintf (stderr, _("Try `%s --help' for more information.\n"),
 114              program_name);
 115   else
 116     {
 117       printf (_("Usage: %s [OPTION]... DIRECTORY...\n"), program_name);
 118       printf (_("\
 119 Remove the DIRECTORY(ies), if they are empty.\n\
 120 \n\
 121       --ignore-fail-on-non-empty\n\
 122                   ignore each failure that is solely because the\n\
 123                   directory is non-empty\n\
 124   -p, --parents   remove explicit parent directories if being emptied\n\
 125       --verbose   output a diagnostic for every directory processed\n\
 126       --help      display this help and exit\n\
 127       --version   output version information and exit\n\
 128 "));
 129       puts (_("\nReport bugs to <fileutils-bugs@gnu.org>."));
 130       close_stdout ();
 131     }
 132   exit (status);
 133 }
 134
 135 int
 136 main (int argc, char **argv)
 137 {
 138   int errors = 0;
 139   int optc;
 140
 141   program_name = argv[0];
 142   setlocale (LC_ALL, "");
 143   bindtextdomain (PACKAGE, LOCALEDIR);
 144   textdomain (PACKAGE);
 145
 146   empty_paths = 0;
 147
 148   while ((optc = getopt_long (argc, argv, "p", longopts, NULL)) != -1)
 149     {
 150       switch (optc)
 151         {
 152         case 0:                 /* Long option. */
 153           break;
 154         case 'p':
 155           empty_paths = 1;
 156           break;
 157         case 13:
 158           ignore_fail_on_non_empty = 1;
 159           break;
 160         case 14:
 161           verbose = 1;
 162           break;
 163         default:
 164           usage (1);
 165         }
 166     }
 167
 168   if (show_version)
 169     {
 170       printf ("rmdir (%s) %s\n", GNU_PACKAGE, VERSION);
 171       close_stdout ();
 172       exit (0);
 173     }
 174
 175   if (show_help)
 176     usage (0);
 177
 178   if (optind == argc)
 179     {
 180       error (0, 0, _("too few arguments"));
 181       usage (1);
 182     }
 183
 184   for (; optind < argc; ++optind)
 185     {
 186       int fail;
 187       char *dir = argv[optind];
 188
 189       /* Stripping slashes is harmless for rmdir;
 190          if the arg is not a directory, it will fail with ENOTDIR.  */
 191       strip_trailing_slashes (dir);
 192       fail = rmdir (dir);
 193
 194       /* Give a diagnostic for each successful removal if --verbose.  */
 195       if (verbose && !fail)
 196         error (0, errno, _("removed directory, %s"), dir);
 197
 198       if (fail)
 199         {
 200           if (!ignore_fail_on_non_empty || errno != ENOTEMPTY)
 201             {
 202               error (0, errno, "%s", dir);
 203               errors = 1;
 204             }
 205         }
 206       else if (empty_paths)
 207         errors += remove_parents (dir);
 208     }
 209
 210   exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
 211 }