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 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 void Create (FilePermissions mode)
  51                 {
  52                         int r = Syscall.mkdir (Path, mode);
  53                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
  54                         base.Refresh ();
  55                 }
  56
  57                 public void Create ()
  58                 {
  59                         FilePermissions mode = FilePermissions.ACCESSPERMS;
  60                         Create (mode);
  61                 }
  62
  63                 public override void Delete ()
  64                 {
  65                         Delete (false);
  66                 }
  67
  68                 public void Delete (bool recursive)
  69                 {
  70                         if (recursive) {
  71                                 foreach (UnixFileSystemInfo e in GetFileSystemEntries ()) {
  72                                         UnixDirectoryInfo d = e as UnixDirectoryInfo;
  73                                         if (d != null)
  74                                                 d.Delete (true);
  75                                         else
  76                                                 e.Delete ();
  77                                 }
  78                         }
  79                         int r = Syscall.rmdir (Path);
  80                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
  81                         base.Refresh ();
  82                 }
  83
  84                 public Dirent[] GetEntries ()
  85                 {
  86                         IntPtr dirp = Syscall.opendir (Path);
  87                         if (dirp == IntPtr.Zero)
  88                                 UnixMarshal.ThrowExceptionForLastError ();
  89
  90                         bool complete = false;
  91                         try {
  92                                 Dirent[] entries = GetEntries (dirp);
  93                                 complete = true;
  94                                 return entries;
  95                         }
  96                         finally {
  97                                 int r = Syscall.closedir (dirp);
  98                                 // don't throw an exception if an exception is in progress
  99                                 if (complete)
 100                                         UnixMarshal.ThrowExceptionForLastErrorIf (r);
 101                         }
 102                 }
 103
 104                 private static Dirent[] GetEntries (IntPtr dirp)
 105                 {
 106                         ArrayList entries = new ArrayList ();
 107
 108                         int r;
 109                         IntPtr result;
 110                         do {
 111                                 Dirent d = new Dirent ();
 112                                 r = Syscall.readdir_r (dirp, d, out result);
 113                                 if (r == 0 && result != IntPtr.Zero)
 114                                         // don't include current & parent dirs
 115                                         if (d.d_name != "." && d.d_name != "..")
 116                                                 entries.Add (d);
 117                         } while  (r == 0 && result != IntPtr.Zero);
 118                         if (r != 0)
 119                                 UnixMarshal.ThrowExceptionForLastErrorIf (r);
 120
 121                         return (Dirent[]) entries.ToArray (typeof(Dirent));
 122                 }
 123
 124                 public Dirent[] GetEntries (Regex regex)
 125                 {
 126                         IntPtr dirp = Syscall.opendir (Path);
 127                         if (dirp == IntPtr.Zero)
 128                                 UnixMarshal.ThrowExceptionForLastError ();
 129
 130                         try {
 131                                 return GetEntries (dirp, regex);
 132                         }
 133                         finally {
 134                                 int r = Syscall.closedir (dirp);
 135                                 UnixMarshal.ThrowExceptionForLastErrorIf (r);
 136                         }
 137                 }
 138
 139                 private static Dirent[] GetEntries (IntPtr dirp, Regex regex)
 140                 {
 141                         ArrayList entries = new ArrayList ();
 142
 143                         int r;
 144                         IntPtr result;
 145                         do {
 146                                 Dirent d = new Dirent ();
 147                                 r = Syscall.readdir_r (dirp, d, out result);
 148                                 if (r == 0 && result != IntPtr.Zero && regex.Match (d.d_name).Success) {
 149                                         // don't include current & parent dirs
 150                                         if (d.d_name != "." && d.d_name != "..")
 151                                                 entries.Add (d);
 152                                 }
 153                         } while  (r == 0 && result != IntPtr.Zero);
 154                         if (r != 0)
 155                                 UnixMarshal.ThrowExceptionForLastError ();
 156
 157                         return (Dirent[]) entries.ToArray (typeof(Dirent));
 158                 }
 159
 160                 public Dirent[] GetEntries (string regex)
 161                 {
 162                         Regex re = new Regex (regex);
 163                         return GetEntries (re);
 164                 }
 165
 166                 public UnixFileSystemInfo[] GetFileSystemEntries ()
 167                 {
 168                         Dirent[] dentries = GetEntries ();
 169                         return GetFileSystemEntries (dentries);
 170                 }
 171
 172                 private UnixFileSystemInfo[] GetFileSystemEntries (Dirent[] dentries)
 173                 {
 174                         UnixFileSystemInfo[] entries = new UnixFileSystemInfo[dentries.Length];
 175                         for (int i = 0; i != entries.Length; ++i)
 176                                 entries [i] = UnixFileSystemInfo.Create (dentries[i].d_name);
 177                         return entries;
 178                 }
 179
 180                 public UnixFileSystemInfo[] GetFileSystemEntries (Regex regex)
 181                 {
 182                         Dirent[] dentries = GetEntries (regex);
 183                         return GetFileSystemEntries (dentries);
 184                 }
 185
 186                 public UnixFileSystemInfo[] GetFileSystemEntries (string regex)
 187                 {
 188                         Regex re = new Regex (regex);
 189                         return GetFileSystemEntries (re);
 190                 }
 191         }
 192 }
 193
 194 // vim: noexpandtab