mcs/class/Mono.Posix/Mono.Unix/UnixDirectoryInfo.cs

   1 //
   2 // Mono.Unix/UnixDirectoryInfo.cs
   3 //
   4 // Authors:
   5 //   Jonathan Pryor (jonpryor@vt.edu)
   6 //
   7 // (C) 2004 Jonathan Pryor
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.Collections;
  31 using System.IO;
  32 using System.Text;
  33 using System.Text.RegularExpressions;
  34 using Mono.Unix;
  35
  36 namespace Mono.Unix {
  37
  38         public sealed class UnixDirectoryInfo : UnixFileSystemInfo
  39         {
  40                 public UnixDirectoryInfo (string path)
  41                         : base (path)
  42                 {
  43                 }
  44
  45                 internal UnixDirectoryInfo (string path, Stat stat)
  46                         : base (path, stat)
  47                 {
  48                 }
  49
  50                 public override string Name {
  51                         get {
  52                                 string r = UnixPath.GetFileName (FullPath);
  53                                 if (r == null || r == "")
  54                                         return FullPath;
  55                                 return r;
  56                         }
  57                 }
  58
  59                 public UnixDirectoryInfo Parent {
  60                         get {
  61                                 string dirname = UnixPath.GetDirectoryName (FullPath);
  62                                 if (dirname == null)
  63                                         return null;
  64                                 return new UnixDirectoryInfo (dirname);
  65                         }
  66                 }
  67
  68                 public UnixDirectoryInfo Root {
  69                         get {
  70                                 string root = UnixPath.GetPathRoot (FullPath);
  71                                 if (root == null)
  72                                         return null;
  73                                 return new UnixDirectoryInfo (root);
  74                         }
  75                 }
  76
  77                 public void Create (FilePermissions mode)
  78                 {
  79                         int r = Syscall.mkdir (FullPath, mode);
  80                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
  81                         base.Refresh ();
  82                 }
  83
  84                 public void Create ()
  85                 {
  86                         FilePermissions mode = FilePermissions.ACCESSPERMS;
  87                         Create (mode);
  88                 }
  89
  90                 public override void Delete ()
  91                 {
  92                         Delete (false);
  93                 }
  94
  95                 public void Delete (bool recursive)
  96                 {
  97                         if (recursive) {
  98                                 foreach (UnixFileSystemInfo e in GetFileSystemEntries ()) {
  99                                         UnixDirectoryInfo d = e as UnixDirectoryInfo;
 100                                         if (d != null)
 101                                                 d.Delete (true);
 102                                         else
 103                                                 e.Delete ();
 104                                 }
 105                         }
 106                         int r = Syscall.rmdir (FullPath);
 107                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
 108                         base.Refresh ();
 109                 }
 110
 111                 public Dirent[] GetEntries ()
 112                 {
 113                         IntPtr dirp = Syscall.opendir (FullPath);
 114                         if (dirp == IntPtr.Zero)
 115                                 UnixMarshal.ThrowExceptionForLastError ();
 116
 117                         bool complete = false;
 118                         try {
 119                                 Dirent[] entries = GetEntries (dirp);
 120                                 complete = true;
 121                                 return entries;
 122                         }
 123                         finally {
 124                                 int r = Syscall.closedir (dirp);
 125                                 // don't throw an exception if an exception is in progress
 126                                 if (complete)
 127                                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
 128                         }
 129                 }
 130
 131                 private static Dirent[] GetEntries (IntPtr dirp)
 132                 {
 133                         ArrayList entries = new ArrayList ();
 134
 135                         int r;
 136                         IntPtr result;
 137                         do {
 138                                 Dirent d = new Dirent ();
 139                                 r = Syscall.readdir_r (dirp, d, out result);
 140                                 if (r == 0 && result != IntPtr.Zero)
 141                                         // don't include current & parent dirs
 142                                         if (d.d_name != "." && d.d_name != "..")
 143                                                 entries.Add (d);
 144                         } while  (r == 0 && result != IntPtr.Zero);
 145                         if (r != 0)
 146                                 UnixMarshal.ThrowExceptionForLastErrorIf (r);
 147
 148                         return (Dirent[]) entries.ToArray (typeof(Dirent));
 149                 }
 150
 151                 public Dirent[] GetEntries (Regex regex)
 152                 {
 153                         IntPtr dirp = Syscall.opendir (FullPath);
 154                         if (dirp == IntPtr.Zero)
 155                                 UnixMarshal.ThrowExceptionForLastError ();
 156
 157                         try {
 158                                 return GetEntries (dirp, regex);
 159                         }
 160                         finally {
 161                                 int r = Syscall.closedir (dirp);
 162                                 UnixMarshal.ThrowExceptionForLastErrorIf (r);
 163                         }
 164                 }
 165
 166                 private static Dirent[] GetEntries (IntPtr dirp, Regex regex)
 167                 {
 168                         ArrayList entries = new ArrayList ();
 169
 170                         int r;
 171                         IntPtr result;
 172                         do {
 173                                 Dirent d = new Dirent ();
 174                                 r = Syscall.readdir_r (dirp, d, out result);
 175                                 if (r == 0 && result != IntPtr.Zero && regex.Match (d.d_name).Success) {
 176                                         // don't include current & parent dirs
 177                                         if (d.d_name != "." && d.d_name != "..")
 178                                                 entries.Add (d);
 179                                 }
 180                         } while  (r == 0 && result != IntPtr.Zero);
 181                         if (r != 0)
 182                                 UnixMarshal.ThrowExceptionForLastError ();
 183
 184                         return (Dirent[]) entries.ToArray (typeof(Dirent));
 185                 }
 186
 187                 public Dirent[] GetEntries (string regex)
 188                 {
 189                         Regex re = new Regex (regex);
 190                         return GetEntries (re);
 191                 }
 192
 193                 public UnixFileSystemInfo[] GetFileSystemEntries ()
 194                 {
 195                         Dirent[] dentries = GetEntries ();
 196                         return GetFileSystemEntries (dentries);
 197                 }
 198
 199                 private UnixFileSystemInfo[] GetFileSystemEntries (Dirent[] dentries)
 200                 {
 201                         UnixFileSystemInfo[] entries = new UnixFileSystemInfo[dentries.Length];
 202                         for (int i = 0; i != entries.Length; ++i)
 203                                 entries [i] = UnixFileSystemInfo.Create (dentries[i].d_name);
 204                         return entries;
 205                 }
 206
 207                 public UnixFileSystemInfo[] GetFileSystemEntries (Regex regex)
 208                 {
 209                         Dirent[] dentries = GetEntries (regex);
 210                         return GetFileSystemEntries (dentries);
 211                 }
 212
 213                 public UnixFileSystemInfo[] GetFileSystemEntries (string regex)
 214                 {
 215                         Regex re = new Regex (regex);
 216                         return GetFileSystemEntries (re);
 217                 }
 218         }
 219 }
 220
 221 // vim: noexpandtab