//
// System.IO.DirectoryInfo.cs
//
// Authors:
// Miguel de Icaza, miguel@ximian.com
// Jim Richardson, develop@wtfo-guru.com
// Dan Lewis, dihlewis@yahoo.co.uk
// Sebastien Pouliot <sebastien@ximian.com>
//
// Copyright (C) 2002 Ximian, Inc.
// Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved
// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Runtime.Serialization;
using System.Security;
using System.Text;
#if !MOONLIGHT
using System.Security.AccessControl;
#endif
namespace System.IO{
[Serializable]
[ComVisible (true)]
public sealed class DirectoryInfo : FileSystemInfo {
private string current;
private string parent;
#if MOONLIGHT
internal DirectoryInfo ()
{
}
#endif
public DirectoryInfo (string path) : this (path, false)
{
}
internal DirectoryInfo (string path, bool simpleOriginalPath)
{
CheckPath (path);
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
FullPath = Path.GetFullPath (path);
if (simpleOriginalPath)
OriginalPath = Path.GetFileName (path);
else
OriginalPath = path;
Initialize ();
}
private DirectoryInfo (SerializationInfo info, StreamingContext context)
: base (info, context)
{
Initialize ();
}
void Initialize ()
{
int len = FullPath.Length - 1;
if ((len > 1) && (FullPath [len] == Path.DirectorySeparatorChar))
len--;
int last = FullPath.LastIndexOf (Path.DirectorySeparatorChar, len);
if ((last == -1) || ((last == 0) && (len == 0))) {
current = FullPath;
parent = null;
} else {
current = FullPath.Substring (last + 1, len - last);
if (last == 0 && !Environment.IsRunningOnWindows)
parent = Path.DirectorySeparatorStr;
else
parent = FullPath.Substring (0, last);
// adjust for drives, i.e. a special case for windows
if (Environment.IsRunningOnWindows) {
if ((parent.Length == 2) && (parent [1] == ':') && Char.IsLetter (parent [0]))
parent += Path.DirectorySeparatorChar;
}
}
}
// properties
public override bool Exists {
get {
Refresh (false);
if (stat.Attributes == MonoIO.InvalidFileAttributes)
return false;
if ((stat.Attributes & FileAttributes.Directory) == 0)
return false;
return true;
}
}
public override string Name {
get { return current; }
}
public DirectoryInfo Parent {
get {
if ((parent == null) || (parent.Length == 0))
return null;
return new DirectoryInfo (parent);
}
}
public DirectoryInfo Root {
get {
string root = Path.GetPathRoot (FullPath);
if (root == null)
return null;
return new DirectoryInfo (root);
}
}
// creational methods
public void Create ()
{
Directory.CreateDirectory (FullPath);
}
public DirectoryInfo CreateSubdirectory (string path)
{
CheckPath (path);
path = Path.Combine (FullPath, path);
Directory.CreateDirectory (path);
return new DirectoryInfo (path);
}
// directory listing methods
public FileInfo [] GetFiles ()
{
return GetFiles ("*");
}
public FileInfo [] GetFiles (string searchPattern)
{
if (searchPattern == null)
throw new ArgumentNullException ("searchPattern");
string [] names = Directory.GetFiles (FullPath, searchPattern);
FileInfo[] infos = new FileInfo [names.Length];
int i = 0;
foreach (string name in names)
infos [i++] = new FileInfo (name);
return infos;
}
public DirectoryInfo [] GetDirectories ()
{
return GetDirectories ("*");
}
public DirectoryInfo [] GetDirectories (string searchPattern)
{
if (searchPattern == null)
throw new ArgumentNullException ("searchPattern");
string [] names = Directory.GetDirectories (FullPath, searchPattern);
DirectoryInfo[] infos = new DirectoryInfo [names.Length];
int i = 0;
foreach (string name in names)
infos [i++] = new DirectoryInfo (name);
return infos;
}
public FileSystemInfo [] GetFileSystemInfos ()
{
return GetFileSystemInfos ("*");
}
public FileSystemInfo [] GetFileSystemInfos (string searchPattern)
{
return GetFileSystemInfos (searchPattern, SearchOption.TopDirectoryOnly);
}
#if NET_4_0
public
#endif
FileSystemInfo [] GetFileSystemInfos (string searchPattern, SearchOption searchOption)
{
if (searchPattern == null)
throw new ArgumentNullException ("searchPattern");
if (searchOption != SearchOption.TopDirectoryOnly && searchOption != SearchOption.AllDirectories)
throw new ArgumentOutOfRangeException ("searchOption", "Must be TopDirectoryOnly or AllDirectories");
if (!Directory.Exists (FullPath))
throw new IOException ("Invalid directory");
List<FileSystemInfo> infos = new List<FileSystemInfo> ();
InternalGetFileSystemInfos (searchPattern, searchOption, infos);
return infos.ToArray ();
}
void InternalGetFileSystemInfos (string searchPattern, SearchOption searchOption, List<FileSystemInfo> infos)
{
// UnauthorizedAccessExceptions might happen here and break everything for SearchOption.AllDirectories
string [] dirs = Directory.GetDirectories (FullPath, searchPattern);
string [] files = Directory.GetFiles (FullPath, searchPattern);
Array.ForEach<string> (dirs, (dir) => { infos.Add (new DirectoryInfo (dir)); });
Array.ForEach<string> (files, (file) => { infos.Add (new FileInfo (file)); });
if (dirs.Length == 0 || searchOption == SearchOption.TopDirectoryOnly)
return;
foreach (string dir in dirs) {
DirectoryInfo dinfo = new DirectoryInfo (dir);
dinfo.InternalGetFileSystemInfos (searchPattern, searchOption, infos);
}
}
// directory management methods
public override void Delete ()
{
Delete (false);
}
public void Delete (bool recursive)
{
Directory.Delete (FullPath, recursive);
}
public void MoveTo (string destDirName)
{
if (destDirName == null)
throw new ArgumentNullException ("destDirName");
if (destDirName.Length == 0)
throw new ArgumentException ("An empty file name is not valid.", "destDirName");
Directory.Move (FullPath, Path.GetFullPath (destDirName));
}
public override string ToString ()
{
return OriginalPath;
}
#if !MOONLIGHT
public DirectoryInfo[] GetDirectories (string searchPattern, SearchOption searchOption)
{
switch (searchOption) {
case SearchOption.TopDirectoryOnly:
return GetDirectories (searchPattern);
case SearchOption.AllDirectories:
Queue workq = new Queue(GetDirectories(searchPattern));
Queue doneq = new Queue();
while (workq.Count > 0)
{
DirectoryInfo cinfo = (DirectoryInfo) workq.Dequeue();
DirectoryInfo[] cinfoDirs = cinfo.GetDirectories(searchPattern);
foreach (DirectoryInfo i in cinfoDirs) workq.Enqueue(i);
doneq.Enqueue(cinfo);
}
DirectoryInfo[] infos = new DirectoryInfo[doneq.Count];
doneq.CopyTo(infos, 0);
return infos;
default:
string msg = Locale.GetText ("Invalid enum value '{0}' for '{1}'.", searchOption, "SearchOption");
throw new ArgumentOutOfRangeException ("searchOption", msg);
}
}
internal int GetFilesSubdirs (ArrayList l, string pattern)
{
int count;
FileInfo [] thisdir = null;
try {
thisdir = GetFiles (pattern);
} catch (System.UnauthorizedAccessException){
return 0;
}
count = thisdir.Length;
l.Add (thisdir);
foreach (DirectoryInfo subdir in GetDirectories ()){
count += subdir.GetFilesSubdirs (l, pattern);
}
return count;
}
public FileInfo[] GetFiles (string searchPattern, SearchOption searchOption)
{
switch (searchOption) {
case SearchOption.TopDirectoryOnly:
return GetFiles (searchPattern);
case SearchOption.AllDirectories: {
ArrayList groups = new ArrayList ();
int count = GetFilesSubdirs (groups, searchPattern);
int current = 0;
FileInfo [] all = new FileInfo [count];
foreach (FileInfo [] p in groups){
p.CopyTo (all, current);
current += p.Length;
}
return all;
}
default:
string msg = Locale.GetText ("Invalid enum value '{0}' for '{1}'.", searchOption, "SearchOption");
throw new ArgumentOutOfRangeException ("searchOption", msg);
}
}
// access control methods
[MonoLimitation ("DirectorySecurity isn't implemented")]
public void Create (DirectorySecurity directorySecurity)
{
if (directorySecurity != null)
throw new UnauthorizedAccessException ();
Create ();
}
[MonoLimitation ("DirectorySecurity isn't implemented")]
public DirectoryInfo CreateSubdirectory (string path, DirectorySecurity directorySecurity)
{
if (directorySecurity != null)
throw new UnauthorizedAccessException ();
return CreateSubdirectory (path);
}
[MonoNotSupported ("DirectorySecurity isn't implemented")]
public DirectorySecurity GetAccessControl ()
{
throw new UnauthorizedAccessException ();
}
[MonoNotSupported ("DirectorySecurity isn't implemented")]
public DirectorySecurity GetAccessControl (AccessControlSections includeSections)
{
throw new UnauthorizedAccessException ();
}
[MonoLimitation ("DirectorySecurity isn't implemented")]
public void SetAccessControl (DirectorySecurity directorySecurity)
{
if (directorySecurity != null)
throw new ArgumentNullException ("directorySecurity");
throw new UnauthorizedAccessException ();
}
#endif
#if NET_4_0 || MOONLIGHT
public IEnumerable<DirectoryInfo> EnumerateDirectories ()
{
return EnumerateDirectories ("*", SearchOption.TopDirectoryOnly);
}
public IEnumerable<DirectoryInfo> EnumerateDirectories (string searchPattern)
{
return EnumerateDirectories (searchPattern, SearchOption.TopDirectoryOnly);
}
public IEnumerable<DirectoryInfo> EnumerateDirectories (string searchPattern, SearchOption searchOption)
{
foreach (string name in Directory.EnumerateDirectories (FullPath, searchPattern, searchOption))
yield return new DirectoryInfo (name);
}
public IEnumerable<FileInfo> EnumerateFiles ()
{
return EnumerateFiles ("*", SearchOption.TopDirectoryOnly);
}
public IEnumerable<FileInfo> EnumerateFiles (string searchPattern)
{
return EnumerateFiles (searchPattern, SearchOption.TopDirectoryOnly);
}
public IEnumerable<FileInfo> EnumerateFiles (string searchPattern, SearchOption searchOption)
{
foreach (string name in Directory.EnumerateFiles (FullPath, searchPattern, searchOption))
yield return new FileInfo (name);
}
public IEnumerable<FileSystemInfo> EnumerateFileSystemInfos ()
{
return EnumerateFileSystemInfos ("*", SearchOption.TopDirectoryOnly);
}
public IEnumerable<FileSystemInfo> EnumerateFileSystemInfos (string searchPattern)
{
return EnumerateFileSystemInfos (searchPattern, SearchOption.TopDirectoryOnly);
}
public IEnumerable<FileSystemInfo> EnumerateFileSystemInfos (string searchPattern, SearchOption searchOption)
{
if (searchPattern == null)
throw new ArgumentNullException ("searchPattern");
if (searchOption != SearchOption.TopDirectoryOnly && searchOption != SearchOption.AllDirectories)
throw new ArgumentOutOfRangeException ("searchoption");
return EnumerateFileSystemInfos (FullPath, searchPattern, searchOption);
}
static internal IEnumerable<FileSystemInfo> EnumerateFileSystemInfos (string full, string searchPattern, SearchOption searchOption)
{
string path_with_pattern = Path.Combine (full, searchPattern);
IntPtr handle;
MonoIOError error;
FileAttributes rattr;
bool subdirs = searchOption == SearchOption.AllDirectories;
Path.Validate (full);
string s = MonoIO.FindFirst (full, path_with_pattern, out rattr, out error, out handle);
if (s == null)
yield break;
if (error != 0)
throw MonoIO.GetException (Path.GetDirectoryName (path_with_pattern), (MonoIOError) error);
try {
if (((rattr & FileAttributes.ReparsePoint) == 0)){
if ((rattr & FileAttributes.Directory) != 0)
yield return new DirectoryInfo (s);
else
yield return new FileInfo (s);
}
while ((s = MonoIO.FindNext (handle, out rattr, out error)) != null){
if ((rattr & FileAttributes.ReparsePoint) != 0)
continue;
if ((rattr & FileAttributes.Directory) != 0)
yield return new DirectoryInfo (s);
else
yield return new FileInfo (s);
if (((rattr & FileAttributes.Directory) != 0) && subdirs)
foreach (FileSystemInfo child in EnumerateFileSystemInfos (s, searchPattern, searchOption))
yield return child;
}
} finally {
MonoIO.FindClose (handle);
}
}
#endif
}
}
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