src/rmdir.c

   1 /* rmdir -- remove directories
   2    Copyright (C) 90, 91, 1995-1999 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 "error.h"
  32
  33 /* The official name of this program (e.g., no `g' prefix).  */
  34 #define PROGRAM_NAME "rmdir"
  35
  36 #define AUTHORS "David MacKenzie"
  37
  38 #ifndef EEXIST
  39 # define EEXIST 0
  40 #endif
  41
  42 #ifndef ENOTEMPTY
  43 # define ENOTEMPTY 0
  44 #endif
  45
  46 void strip_trailing_slashes ();
  47
  48 /* The name this program was run with. */
  49 char *program_name;
  50
  51 /* If nonzero, remove empty parent directories. */
  52 static int empty_paths;
  53
  54 /* If nonzero, don't treat failure to remove a nonempty directory
  55    as an error.  */
  56 static int ignore_fail_on_non_empty;
  57
  58 /* If nonzero, output a diagnostic for every directory processed.  */
  59 static int verbose;
  60
  61 static struct option const longopts[] =
  62 {
  63   /* Don't name this `--force' because it's not close enough in meaning
  64      to e.g. rm's -f option.  */
  65   {"ignore-fail-on-non-empty", no_argument, NULL, CHAR_MAX + 1},
  66
  67   {"path", no_argument, NULL, 'p'},
  68   {"parents", no_argument, NULL, 'p'},
  69   {"verbose", no_argument, NULL, 14},
  70   {GETOPT_HELP_OPTION_DECL},
  71   {GETOPT_VERSION_OPTION_DECL},
  72   {NULL, 0, NULL, 0}
  73 };
  74
  75 /* Remove any empty parent directories of PATH.
  76    If PATH contains slash characters, at least one of them
  77    (beginning with the rightmost) is replaced with a NUL byte.  */
  78
  79 static int
  80 remove_parents (char *path)
  81 {
  82   char *slash;
  83   int fail = 0;
  84
  85   while (1)
  86     {
  87       slash = strrchr (path, '/');
  88       if (slash == NULL)
  89         break;
  90       /* Remove any characters after the slash, skipping any extra
  91          slashes in a row. */
  92       while (slash > path && *slash == '/')
  93         --slash;
  94       slash[1] = 0;
  95
  96       /* Give a diagnostic for each attempted removal if --verbose.  */
  97       if (verbose)
  98         error (0, errno, _("removing directory, %s"), path);
  99
 100       fail = rmdir (path);
 101
 102       if (fail)
 103         {
 104           /* Give a diagnostic and set fail if not --ignore.  */
 105           if (!ignore_fail_on_non_empty || errno != ENOTEMPTY)
 106             {
 107               error (0, errno, "%s", path);
 108               fail = 1;
 109             }
 110           break;
 111         }
 112     }
 113   return fail;
 114 }
 115
 116 void
 117 usage (int status)
 118 {
 119   if (status != 0)
 120     fprintf (stderr, _("Try `%s --help' for more information.\n"),
 121              program_name);
 122   else
 123     {
 124       printf (_("Usage: %s [OPTION]... DIRECTORY...\n"), program_name);
 125       printf (_("\
 126 Remove the DIRECTORY(ies), if they are empty.\n\
 127 \n\
 128       --ignore-fail-on-non-empty\n\
 129                   ignore each failure that is solely because the\n\
 130                   directory is non-empty\n\
 131   -p, --parents   remove explicit parent directories if being emptied\n\
 132       --verbose   output a diagnostic for every directory processed\n\
 133       --help      display this help and exit\n\
 134       --version   output version information and exit\n\
 135 "));
 136       puts (_("\nReport bugs to <bug-fileutils@gnu.org>."));
 137       close_stdout ();
 138     }
 139   exit (status);
 140 }
 141
 142 int
 143 main (int argc, char **argv)
 144 {
 145   int errors = 0;
 146   int optc;
 147
 148   program_name = argv[0];
 149   setlocale (LC_ALL, "");
 150   bindtextdomain (PACKAGE, LOCALEDIR);
 151   textdomain (PACKAGE);
 152
 153   empty_paths = 0;
 154
 155   while ((optc = getopt_long (argc, argv, "p", longopts, NULL)) != -1)
 156     {
 157       switch (optc)
 158         {
 159         case 0:                 /* Long option. */
 160           break;
 161         case 'p':
 162           empty_paths = 1;
 163           break;
 164         case CHAR_MAX + 1:
 165           ignore_fail_on_non_empty = 1;
 166           break;
 167         case 14:
 168           verbose = 1;
 169           break;
 170         case_GETOPT_HELP_CHAR;
 171         case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 172         default:
 173           usage (1);
 174         }
 175     }
 176
 177   if (optind == argc)
 178     {
 179       error (0, 0, _("too few arguments"));
 180       usage (1);
 181     }
 182
 183   for (; optind < argc; ++optind)
 184     {
 185       int fail;
 186       char *dir = argv[optind];
 187
 188       /* Stripping slashes is harmless for rmdir;
 189          if the arg is not a directory, it will fail with ENOTDIR.  */
 190       strip_trailing_slashes (dir);
 191
 192       /* Give a diagnostic for each attempted removal if --verbose.  */
 193       if (verbose)
 194         error (0, errno, _("removing directory, %s"), dir);
 195
 196       fail = rmdir (dir);
 197
 198       if (fail)
 199         {
 200           if (ignore_fail_on_non_empty
 201               && (errno == ENOTEMPTY || errno == EEXIST))
 202             continue;
 203
 204           error (0, errno, "%s", dir);
 205           errors = 1;
 206         }
 207       else if (empty_paths)
 208         {
 209           errors += remove_parents (dir);
 210         }
 211     }
 212
 213   exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
 214 }