src/rmdir.c

   1 /* rmdir -- remove directories
   2    Copyright (C) 90, 91, 95, 1996 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 void strip_trailing_slashes ();
  34
  35 /* The name this program was run with. */
  36 char *program_name;
  37
  38 /* If nonzero, remove empty parent directories. */
  39 static int empty_paths;
  40
  41 /* If nonzero, display usage information and exit.  */
  42 static int show_help;
  43
  44 /* If nonzero, print the version on standard output and exit.  */
  45 static int show_version;
  46
  47 static struct option const longopts[] =
  48 {
  49   {"path", no_argument, &empty_paths, 1},
  50   {"parents", no_argument, &empty_paths, 1},
  51   {"help", no_argument, &show_help, 1},
  52   {"version", no_argument, &show_version, 1},
  53   {NULL, 0, NULL, 0}
  54 };
  55
  56 /* Remove any empty parent directories of `path'.
  57    Replaces '/' characters in `path' with NULs. */
  58
  59 static void
  60 remove_parents (char *path)
  61 {
  62   char *slash;
  63
  64   do
  65     {
  66       slash = strrchr (path, '/');
  67       if (slash == NULL)
  68         break;
  69       /* Remove any characters after the slash, skipping any extra
  70          slashes in a row. */
  71       while (slash > path && *slash == '/')
  72         --slash;
  73       slash[1] = 0;
  74     }
  75   while (rmdir (path) == 0);
  76 }
  77
  78 static void
  79 usage (int status)
  80 {
  81   if (status != 0)
  82     fprintf (stderr, _("Try `%s --help' for more information.\n"),
  83              program_name);
  84   else
  85     {
  86       printf (_("Usage: %s [OPTION]... DIRECTORY...\n"), program_name);
  87       printf (_("\
  88 Remove the DIRECTORY(ies), if they are empty.\n\
  89 \n\
  90   -p, --parents   remove explicit parent directories if being emptied\n\
  91       --help      display this help and exit\n\
  92       --version   output version information and exit\n"));
  93     }
  94   exit (status);
  95 }
  96
  97 int
  98 main (int argc, char **argv)
  99 {
 100   int errors = 0;
 101   int optc;
 102
 103   program_name = argv[0];
 104   setlocale (LC_ALL, "");
 105   bindtextdomain (PACKAGE, LOCALEDIR);
 106   textdomain (PACKAGE);
 107
 108   empty_paths = 0;
 109
 110   while ((optc = getopt_long (argc, argv, "p", longopts, (int *) 0)) != EOF)
 111     {
 112       switch (optc)
 113         {
 114         case 0:                 /* Long option. */
 115           break;
 116         case 'p':
 117           empty_paths = 1;
 118           break;
 119         default:
 120           usage (1);
 121         }
 122     }
 123
 124   if (show_version)
 125     {
 126       printf ("rmdir - %s\n", PACKAGE_VERSION);
 127       exit (0);
 128     }
 129
 130   if (show_help)
 131     usage (0);
 132
 133   if (optind == argc)
 134     {
 135       error (0, 0, _("too few arguments"));
 136       usage (1);
 137     }
 138
 139   for (; optind < argc; ++optind)
 140     {
 141       /* Stripping slashes is harmless for rmdir;
 142          if the arg is not a directory, it will fail with ENOTDIR.  */
 143       strip_trailing_slashes (argv[optind]);
 144       if (rmdir (argv[optind]) != 0)
 145         {
 146           error (0, errno, "%s", argv[optind]);
 147           errors = 1;
 148         }
 149       else if (empty_paths)
 150         remove_parents (argv[optind]);
 151     }
 152
 153   exit (errors);
 154 }