2014-08-13 10:39:27 +01:00
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//
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// System.IO.DirectoryInfo.cs
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//
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// Authors:
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// Miguel de Icaza, miguel@ximian.com
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// Jim Richardson, develop@wtfo-guru.com
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// Dan Lewis, dihlewis@yahoo.co.uk
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// Sebastien Pouliot <sebastien@ximian.com>
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2015-01-13 10:44:36 +00:00
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// Marek Safar <marek.safar@gmail.com>
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2014-08-13 10:39:27 +01:00
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//
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// Copyright (C) 2002 Ximian, Inc.
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// Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved
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// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
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2015-01-13 10:44:36 +00:00
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// Copyright (C) 2014 Xamarin, Inc (http://www.xamarin.com)
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2014-08-13 10:39:27 +01:00
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.Collections;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using System.Runtime.Serialization;
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using System.Security;
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using System.Text;
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using System.Security.AccessControl;
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namespace System.IO {
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[Serializable]
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[ComVisible (true)]
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public sealed class DirectoryInfo : FileSystemInfo {
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private string current;
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private string parent;
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public DirectoryInfo (string path) : this (path, false)
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{
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}
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internal DirectoryInfo (string path, bool simpleOriginalPath)
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{
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CheckPath (path);
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SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
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FullPath = Path.GetFullPath (path);
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if (simpleOriginalPath)
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OriginalPath = Path.GetFileName (path);
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else
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OriginalPath = path;
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Initialize ();
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}
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private DirectoryInfo (SerializationInfo info, StreamingContext context)
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: base (info, context)
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{
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Initialize ();
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}
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void Initialize ()
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{
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int len = FullPath.Length - 1;
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if ((len > 1) && (FullPath [len] == Path.DirectorySeparatorChar))
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len--;
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int last = FullPath.LastIndexOf (Path.DirectorySeparatorChar, len);
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if ((last == -1) || ((last == 0) && (len == 0))) {
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current = FullPath;
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parent = null;
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} else {
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current = FullPath.Substring (last + 1, len - last);
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if (last == 0 && !Environment.IsRunningOnWindows)
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parent = Path.DirectorySeparatorStr;
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else
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parent = FullPath.Substring (0, last);
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// adjust for drives, i.e. a special case for windows
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if (Environment.IsRunningOnWindows) {
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if ((parent.Length == 2) && (parent [1] == ':') && Char.IsLetter (parent [0]))
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parent += Path.DirectorySeparatorChar;
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}
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}
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}
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// properties
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public override bool Exists {
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get {
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Refresh (false);
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if (stat.Attributes == MonoIO.InvalidFileAttributes)
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return false;
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if ((stat.Attributes & FileAttributes.Directory) == 0)
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return false;
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return true;
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}
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}
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public override string Name {
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get { return current; }
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}
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public DirectoryInfo Parent {
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get {
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if ((parent == null) || (parent.Length == 0))
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return null;
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return new DirectoryInfo (parent);
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}
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}
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public DirectoryInfo Root {
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get {
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string root = Path.GetPathRoot (FullPath);
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if (root == null)
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return null;
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return new DirectoryInfo (root);
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}
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}
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// creational methods
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public void Create ()
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{
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Directory.CreateDirectory (FullPath);
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}
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public DirectoryInfo CreateSubdirectory (string path)
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{
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CheckPath (path);
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path = Path.Combine (FullPath, path);
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Directory.CreateDirectory (path);
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return new DirectoryInfo (path);
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}
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// directory listing methods
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public FileInfo [] GetFiles ()
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{
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return GetFiles ("*");
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}
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public FileInfo [] GetFiles (string searchPattern)
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{
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if (searchPattern == null)
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throw new ArgumentNullException ("searchPattern");
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string [] names = Directory.GetFiles (FullPath, searchPattern);
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FileInfo[] infos = new FileInfo [names.Length];
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int i = 0;
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foreach (string name in names)
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infos [i++] = new FileInfo (name);
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return infos;
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}
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public DirectoryInfo [] GetDirectories ()
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{
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return GetDirectories ("*");
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}
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public DirectoryInfo [] GetDirectories (string searchPattern)
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{
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if (searchPattern == null)
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throw new ArgumentNullException ("searchPattern");
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string [] names = Directory.GetDirectories (FullPath, searchPattern);
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DirectoryInfo[] infos = new DirectoryInfo [names.Length];
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int i = 0;
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foreach (string name in names)
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infos [i++] = new DirectoryInfo (name);
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return infos;
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}
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public FileSystemInfo [] GetFileSystemInfos ()
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{
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return GetFileSystemInfos ("*");
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}
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public FileSystemInfo [] GetFileSystemInfos (string searchPattern)
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{
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return GetFileSystemInfos (searchPattern, SearchOption.TopDirectoryOnly);
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}
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public
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FileSystemInfo [] GetFileSystemInfos (string searchPattern, SearchOption searchOption)
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{
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if (searchPattern == null)
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throw new ArgumentNullException ("searchPattern");
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if (searchOption != SearchOption.TopDirectoryOnly && searchOption != SearchOption.AllDirectories)
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throw new ArgumentOutOfRangeException ("searchOption", "Must be TopDirectoryOnly or AllDirectories");
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if (!Directory.Exists (FullPath))
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throw new IOException ("Invalid directory");
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List<FileSystemInfo> infos = new List<FileSystemInfo> ();
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InternalGetFileSystemInfos (searchPattern, searchOption, infos);
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return infos.ToArray ();
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}
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void InternalGetFileSystemInfos (string searchPattern, SearchOption searchOption, List<FileSystemInfo> infos)
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{
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// UnauthorizedAccessExceptions might happen here and break everything for SearchOption.AllDirectories
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string [] dirs = Directory.GetDirectories (FullPath, searchPattern);
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string [] files = Directory.GetFiles (FullPath, searchPattern);
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Array.ForEach<string> (dirs, (dir) => { infos.Add (new DirectoryInfo (dir)); });
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Array.ForEach<string> (files, (file) => { infos.Add (new FileInfo (file)); });
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if (dirs.Length == 0 || searchOption == SearchOption.TopDirectoryOnly)
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return;
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foreach (string dir in dirs) {
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DirectoryInfo dinfo = new DirectoryInfo (dir);
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dinfo.InternalGetFileSystemInfos (searchPattern, searchOption, infos);
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}
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}
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// directory management methods
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public override void Delete ()
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{
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Delete (false);
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}
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public void Delete (bool recursive)
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{
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Directory.Delete (FullPath, recursive);
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}
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public void MoveTo (string destDirName)
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{
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if (destDirName == null)
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throw new ArgumentNullException ("destDirName");
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if (destDirName.Length == 0)
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throw new ArgumentException ("An empty file name is not valid.", "destDirName");
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Directory.Move (FullPath, Path.GetFullPath (destDirName));
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FullPath = OriginalPath = destDirName;
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Initialize ();
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}
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public override string ToString ()
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{
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return OriginalPath;
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}
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public DirectoryInfo[] GetDirectories (string searchPattern, SearchOption searchOption)
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{
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//NULL-check of searchPattern is done in Directory.GetDirectories
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string [] names = Directory.GetDirectories (FullPath, searchPattern, searchOption);
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//Convert the names to DirectoryInfo instances
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DirectoryInfo[] infos = new DirectoryInfo [names.Length];
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for (int i = 0; i<names.Length; ++i){
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string name = names[i];
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infos [i] = new DirectoryInfo (name);
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}
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return infos;
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}
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internal int GetFilesSubdirs (ArrayList l, string pattern)
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{
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int count;
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FileInfo [] thisdir = null;
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try {
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thisdir = GetFiles (pattern);
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} catch (System.UnauthorizedAccessException){
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return 0;
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}
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count = thisdir.Length;
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l.Add (thisdir);
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foreach (DirectoryInfo subdir in GetDirectories ()){
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count += subdir.GetFilesSubdirs (l, pattern);
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}
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return count;
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}
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public FileInfo[] GetFiles (string searchPattern, SearchOption searchOption)
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{
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switch (searchOption) {
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case SearchOption.TopDirectoryOnly:
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return GetFiles (searchPattern);
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case SearchOption.AllDirectories: {
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ArrayList groups = new ArrayList ();
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int count = GetFilesSubdirs (groups, searchPattern);
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int current = 0;
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FileInfo [] all = new FileInfo [count];
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foreach (FileInfo [] p in groups){
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p.CopyTo (all, current);
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current += p.Length;
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}
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return all;
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}
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default:
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string msg = Locale.GetText ("Invalid enum value '{0}' for '{1}'.", searchOption, "SearchOption");
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throw new ArgumentOutOfRangeException ("searchOption", msg);
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}
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}
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// access control methods
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[MonoLimitation ("DirectorySecurity isn't implemented")]
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public void Create (DirectorySecurity directorySecurity)
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{
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if (directorySecurity != null)
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throw new UnauthorizedAccessException ();
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Create ();
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}
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[MonoLimitation ("DirectorySecurity isn't implemented")]
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public DirectoryInfo CreateSubdirectory (string path, DirectorySecurity directorySecurity)
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{
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if (directorySecurity != null)
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throw new UnauthorizedAccessException ();
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return CreateSubdirectory (path);
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}
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public DirectorySecurity GetAccessControl ()
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{
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return Directory.GetAccessControl (FullPath);
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}
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public DirectorySecurity GetAccessControl (AccessControlSections includeSections)
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{
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return Directory.GetAccessControl (FullPath, includeSections);
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}
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public void SetAccessControl (DirectorySecurity directorySecurity)
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{
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Directory.SetAccessControl (FullPath, directorySecurity);
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}
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public IEnumerable<DirectoryInfo> EnumerateDirectories ()
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{
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return EnumerateDirectories ("*", SearchOption.TopDirectoryOnly);
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}
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public IEnumerable<DirectoryInfo> EnumerateDirectories (string searchPattern)
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{
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return EnumerateDirectories (searchPattern, SearchOption.TopDirectoryOnly);
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}
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public IEnumerable<DirectoryInfo> EnumerateDirectories (string searchPattern, SearchOption searchOption)
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{
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if (searchPattern == null)
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throw new ArgumentNullException ("searchPattern");
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return CreateEnumerateDirectoriesIterator (searchPattern, searchOption);
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}
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IEnumerable<DirectoryInfo> CreateEnumerateDirectoriesIterator (string searchPattern, SearchOption searchOption)
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{
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foreach (string name in Directory.EnumerateDirectories (FullPath, searchPattern, searchOption))
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yield return new DirectoryInfo (name);
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}
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public IEnumerable<FileInfo> EnumerateFiles ()
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{
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return EnumerateFiles ("*", SearchOption.TopDirectoryOnly);
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}
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public IEnumerable<FileInfo> EnumerateFiles (string searchPattern)
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{
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return EnumerateFiles (searchPattern, SearchOption.TopDirectoryOnly);
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}
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public IEnumerable<FileInfo> EnumerateFiles (string searchPattern, SearchOption searchOption)
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{
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if (searchPattern == null)
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throw new ArgumentNullException ("searchPattern");
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return CreateEnumerateFilesIterator (searchPattern, searchOption);
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}
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IEnumerable<FileInfo> CreateEnumerateFilesIterator (string searchPattern, SearchOption searchOption)
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{
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foreach (string name in Directory.EnumerateFiles (FullPath, searchPattern, searchOption))
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yield return new FileInfo (name);
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}
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public IEnumerable<FileSystemInfo> EnumerateFileSystemInfos ()
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{
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return EnumerateFileSystemInfos ("*", SearchOption.TopDirectoryOnly);
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}
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public IEnumerable<FileSystemInfo> EnumerateFileSystemInfos (string searchPattern)
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{
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return EnumerateFileSystemInfos (searchPattern, SearchOption.TopDirectoryOnly);
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}
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public IEnumerable<FileSystemInfo> EnumerateFileSystemInfos (string searchPattern, SearchOption searchOption)
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{
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if (searchPattern == null)
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throw new ArgumentNullException ("searchPattern");
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if (searchOption != SearchOption.TopDirectoryOnly && searchOption != SearchOption.AllDirectories)
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throw new ArgumentOutOfRangeException ("searchoption");
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return EnumerateFileSystemInfos (FullPath, searchPattern, searchOption);
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}
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static internal IEnumerable<FileSystemInfo> EnumerateFileSystemInfos (string full, string searchPattern, SearchOption searchOption)
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{
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string path_with_pattern = Path.Combine (full, searchPattern);
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IntPtr handle;
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MonoIOError error;
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FileAttributes rattr;
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bool subdirs = searchOption == SearchOption.AllDirectories;
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Path.Validate (full);
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string s = MonoIO.FindFirst (full, path_with_pattern, out rattr, out error, out handle);
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if (s == null)
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yield break;
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if (error != 0)
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throw MonoIO.GetException (Path.GetDirectoryName (path_with_pattern), (MonoIOError) error);
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try {
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2015-01-13 10:44:36 +00:00
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do {
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if (((rattr & FileAttributes.ReparsePoint) == 0)){
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if ((rattr & FileAttributes.Directory) != 0)
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yield return new DirectoryInfo (s);
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else
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yield return new FileInfo (s);
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}
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2014-08-13 10:39:27 +01:00
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if (((rattr & FileAttributes.Directory) != 0) && subdirs)
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foreach (FileSystemInfo child in EnumerateFileSystemInfos (s, searchPattern, searchOption))
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yield return child;
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2015-01-13 10:44:36 +00:00
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} while ((s = MonoIO.FindNext (handle, out rattr, out error)) != null);
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2014-08-13 10:39:27 +01:00
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} finally {
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MonoIO.FindClose (handle);
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}
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}
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}
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}
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