2 // System.IO.DirectoryInfo.cs
5 // Miguel de Icaza, miguel@ximian.com
6 // Jim Richardson, develop@wtfo-guru.com
7 // Dan Lewis, dihlewis@yahoo.co.uk
8 // Sebastien Pouliot <sebastien@ximian.com>
9 // Marek Safar <marek.safar@gmail.com>
11 // Copyright (C) 2002 Ximian, Inc.
12 // Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved
13 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
14 // Copyright (C) 2014 Xamarin, Inc (http://www.xamarin.com)
16 // Permission is hereby granted, free of charge, to any person obtaining
17 // a copy of this software and associated documentation files (the
18 // "Software"), to deal in the Software without restriction, including
19 // without limitation the rights to use, copy, modify, merge, publish,
20 // distribute, sublicense, and/or sell copies of the Software, and to
21 // permit persons to whom the Software is furnished to do so, subject to
22 // the following conditions:
24 // The above copyright notice and this permission notice shall be
25 // included in all copies or substantial portions of the Software.
27 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
31 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
32 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
33 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 using System.Collections;
37 using System.Collections.Generic;
38 using System.Runtime.InteropServices;
39 using System.Runtime.Serialization;
40 using System.Security;
42 using System.Security.AccessControl;
48 public sealed class DirectoryInfo : FileSystemInfo {
50 private string current;
51 private string parent;
53 public DirectoryInfo (string path) : this (path, false)
57 internal DirectoryInfo (string path, bool simpleOriginalPath)
61 SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
63 FullPath = Path.GetFullPath (path);
64 if (simpleOriginalPath)
65 OriginalPath = Path.GetFileName (path);
72 private DirectoryInfo (SerializationInfo info, StreamingContext context)
73 : base (info, context)
80 int len = FullPath.Length - 1;
81 if ((len > 1) && (FullPath [len] == Path.DirectorySeparatorChar))
83 int last = FullPath.LastIndexOf (Path.DirectorySeparatorChar, len);
84 if ((last == -1) || ((last == 0) && (len == 0))) {
88 current = FullPath.Substring (last + 1, len - last);
89 if (last == 0 && !Environment.IsRunningOnWindows)
90 parent = Path.DirectorySeparatorStr;
92 parent = FullPath.Substring (0, last);
93 // adjust for drives, i.e. a special case for windows
94 if (Environment.IsRunningOnWindows) {
95 if ((parent.Length == 2) && (parent [1] == ':') && Char.IsLetter (parent [0]))
96 parent += Path.DirectorySeparatorChar;
103 public override bool Exists {
107 if (stat.Attributes == MonoIO.InvalidFileAttributes)
110 if ((stat.Attributes & FileAttributes.Directory) == 0)
117 public override string Name {
118 get { return current; }
121 public DirectoryInfo Parent {
123 if ((parent == null) || (parent.Length == 0))
125 return new DirectoryInfo (parent);
129 public DirectoryInfo Root {
131 string root = Path.GetPathRoot (FullPath);
135 return new DirectoryInfo (root);
139 // creational methods
141 public void Create ()
143 Directory.CreateDirectory (FullPath);
146 public DirectoryInfo CreateSubdirectory (string path)
150 path = Path.Combine (FullPath, path);
151 Directory.CreateDirectory (path);
152 return new DirectoryInfo (path);
155 // directory listing methods
157 public FileInfo [] GetFiles ()
159 return GetFiles ("*");
162 public FileInfo [] GetFiles (string searchPattern)
164 if (searchPattern == null)
165 throw new ArgumentNullException ("searchPattern");
167 string [] names = Directory.GetFiles (FullPath, searchPattern);
169 FileInfo[] infos = new FileInfo [names.Length];
171 foreach (string name in names)
172 infos [i++] = new FileInfo (name);
177 public DirectoryInfo [] GetDirectories ()
179 return GetDirectories ("*");
182 public DirectoryInfo [] GetDirectories (string searchPattern)
184 if (searchPattern == null)
185 throw new ArgumentNullException ("searchPattern");
187 string [] names = Directory.GetDirectories (FullPath, searchPattern);
189 DirectoryInfo[] infos = new DirectoryInfo [names.Length];
191 foreach (string name in names)
192 infos [i++] = new DirectoryInfo (name);
197 public FileSystemInfo [] GetFileSystemInfos ()
199 return GetFileSystemInfos ("*");
202 public FileSystemInfo [] GetFileSystemInfos (string searchPattern)
204 return GetFileSystemInfos (searchPattern, SearchOption.TopDirectoryOnly);
208 FileSystemInfo [] GetFileSystemInfos (string searchPattern, SearchOption searchOption)
210 if (searchPattern == null)
211 throw new ArgumentNullException ("searchPattern");
212 if (searchOption != SearchOption.TopDirectoryOnly && searchOption != SearchOption.AllDirectories)
213 throw new ArgumentOutOfRangeException ("searchOption", "Must be TopDirectoryOnly or AllDirectories");
214 if (!Directory.Exists (FullPath))
215 throw new IOException ("Invalid directory");
217 List<FileSystemInfo> infos = new List<FileSystemInfo> ();
218 InternalGetFileSystemInfos (searchPattern, searchOption, infos);
219 return infos.ToArray ();
222 void InternalGetFileSystemInfos (string searchPattern, SearchOption searchOption, List<FileSystemInfo> infos)
224 // UnauthorizedAccessExceptions might happen here and break everything for SearchOption.AllDirectories
225 string [] dirs = Directory.GetDirectories (FullPath, searchPattern);
226 string [] files = Directory.GetFiles (FullPath, searchPattern);
228 Array.ForEach<string> (dirs, (dir) => { infos.Add (new DirectoryInfo (dir)); });
229 Array.ForEach<string> (files, (file) => { infos.Add (new FileInfo (file)); });
230 if (dirs.Length == 0 || searchOption == SearchOption.TopDirectoryOnly)
233 foreach (string dir in dirs) {
234 DirectoryInfo dinfo = new DirectoryInfo (dir);
235 dinfo.InternalGetFileSystemInfos (searchPattern, searchOption, infos);
239 // directory management methods
241 public override void Delete ()
246 public void Delete (bool recursive)
248 Directory.Delete (FullPath, recursive);
251 public void MoveTo (string destDirName)
253 if (destDirName == null)
254 throw new ArgumentNullException ("destDirName");
255 if (destDirName.Length == 0)
256 throw new ArgumentException ("An empty file name is not valid.", "destDirName");
258 Directory.Move (FullPath, Path.GetFullPath (destDirName));
259 FullPath = OriginalPath = destDirName;
263 public override string ToString ()
268 public DirectoryInfo[] GetDirectories (string searchPattern, SearchOption searchOption)
270 //NULL-check of searchPattern is done in Directory.GetDirectories
271 string [] names = Directory.GetDirectories (FullPath, searchPattern, searchOption);
272 //Convert the names to DirectoryInfo instances
273 DirectoryInfo[] infos = new DirectoryInfo [names.Length];
274 for (int i = 0; i<names.Length; ++i){
275 string name = names[i];
276 infos [i] = new DirectoryInfo (name);
281 internal int GetFilesSubdirs (ArrayList l, string pattern)
284 FileInfo [] thisdir = null;
287 thisdir = GetFiles (pattern);
288 } catch (System.UnauthorizedAccessException){
292 count = thisdir.Length;
295 foreach (DirectoryInfo subdir in GetDirectories ()){
296 count += subdir.GetFilesSubdirs (l, pattern);
301 public FileInfo[] GetFiles (string searchPattern, SearchOption searchOption)
303 switch (searchOption) {
304 case SearchOption.TopDirectoryOnly:
305 return GetFiles (searchPattern);
306 case SearchOption.AllDirectories: {
307 ArrayList groups = new ArrayList ();
308 int count = GetFilesSubdirs (groups, searchPattern);
311 FileInfo [] all = new FileInfo [count];
312 foreach (FileInfo [] p in groups){
313 p.CopyTo (all, current);
319 string msg = Locale.GetText ("Invalid enum value '{0}' for '{1}'.", searchOption, "SearchOption");
320 throw new ArgumentOutOfRangeException ("searchOption", msg);
324 // access control methods
326 [MonoLimitation ("DirectorySecurity isn't implemented")]
327 public void Create (DirectorySecurity directorySecurity)
329 if (directorySecurity != null)
330 throw new UnauthorizedAccessException ();
334 [MonoLimitation ("DirectorySecurity isn't implemented")]
335 public DirectoryInfo CreateSubdirectory (string path, DirectorySecurity directorySecurity)
337 if (directorySecurity != null)
338 throw new UnauthorizedAccessException ();
339 return CreateSubdirectory (path);
342 public DirectorySecurity GetAccessControl ()
344 return Directory.GetAccessControl (FullPath);
347 public DirectorySecurity GetAccessControl (AccessControlSections includeSections)
349 return Directory.GetAccessControl (FullPath, includeSections);
352 public void SetAccessControl (DirectorySecurity directorySecurity)
354 Directory.SetAccessControl (FullPath, directorySecurity);
358 public IEnumerable<DirectoryInfo> EnumerateDirectories ()
360 return EnumerateDirectories ("*", SearchOption.TopDirectoryOnly);
363 public IEnumerable<DirectoryInfo> EnumerateDirectories (string searchPattern)
365 return EnumerateDirectories (searchPattern, SearchOption.TopDirectoryOnly);
368 public IEnumerable<DirectoryInfo> EnumerateDirectories (string searchPattern, SearchOption searchOption)
370 if (searchPattern == null)
371 throw new ArgumentNullException ("searchPattern");
373 return CreateEnumerateDirectoriesIterator (searchPattern, searchOption);
376 IEnumerable<DirectoryInfo> CreateEnumerateDirectoriesIterator (string searchPattern, SearchOption searchOption)
378 foreach (string name in Directory.EnumerateDirectories (FullPath, searchPattern, searchOption))
379 yield return new DirectoryInfo (name);
382 public IEnumerable<FileInfo> EnumerateFiles ()
384 return EnumerateFiles ("*", SearchOption.TopDirectoryOnly);
387 public IEnumerable<FileInfo> EnumerateFiles (string searchPattern)
389 return EnumerateFiles (searchPattern, SearchOption.TopDirectoryOnly);
392 public IEnumerable<FileInfo> EnumerateFiles (string searchPattern, SearchOption searchOption)
394 if (searchPattern == null)
395 throw new ArgumentNullException ("searchPattern");
397 return CreateEnumerateFilesIterator (searchPattern, searchOption);
400 IEnumerable<FileInfo> CreateEnumerateFilesIterator (string searchPattern, SearchOption searchOption)
402 foreach (string name in Directory.EnumerateFiles (FullPath, searchPattern, searchOption))
403 yield return new FileInfo (name);
406 public IEnumerable<FileSystemInfo> EnumerateFileSystemInfos ()
408 return EnumerateFileSystemInfos ("*", SearchOption.TopDirectoryOnly);
411 public IEnumerable<FileSystemInfo> EnumerateFileSystemInfos (string searchPattern)
413 return EnumerateFileSystemInfos (searchPattern, SearchOption.TopDirectoryOnly);
416 public IEnumerable<FileSystemInfo> EnumerateFileSystemInfos (string searchPattern, SearchOption searchOption)
418 if (searchPattern == null)
419 throw new ArgumentNullException ("searchPattern");
420 if (searchOption != SearchOption.TopDirectoryOnly && searchOption != SearchOption.AllDirectories)
421 throw new ArgumentOutOfRangeException ("searchoption");
423 return EnumerateFileSystemInfos (FullPath, searchPattern, searchOption);
426 static internal IEnumerable<FileSystemInfo> EnumerateFileSystemInfos (string full, string searchPattern, SearchOption searchOption)
428 string path_with_pattern = Path.Combine (full, searchPattern);
431 FileAttributes rattr;
432 bool subdirs = searchOption == SearchOption.AllDirectories;
434 Path.Validate (full);
436 string s = MonoIO.FindFirst (full, path_with_pattern, out rattr, out error, out handle);
440 throw MonoIO.GetException (Path.GetDirectoryName (path_with_pattern), (MonoIOError) error);
444 if (((rattr & FileAttributes.ReparsePoint) == 0)){
445 if ((rattr & FileAttributes.Directory) != 0)
446 yield return new DirectoryInfo (s);
448 yield return new FileInfo (s);
451 if (((rattr & FileAttributes.Directory) != 0) && subdirs)
452 foreach (FileSystemInfo child in EnumerateFileSystemInfos (s, searchPattern, searchOption))
455 } while ((s = MonoIO.FindNext (handle, out rattr, out error)) != null);
457 MonoIO.FindClose (handle);