//------------------------------------------------------------------------------
//
// System.IO.FileInfo.cs
//
// Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved
//
// Author: Jim Richardson, develop@wtfo-guru.com
// Dan Lewis (dihlewis@yahoo.co.uk)
// Created: Monday, August 13, 2001
//
//------------------------------------------------------------------------------
//
// Copyright (C) 2004, 2006 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.Runtime.InteropServices;
using System.Runtime.Serialization;
using System.Security;
#if !NET_2_1
using System.Security.AccessControl;
#endif
namespace System.IO{
[Serializable]
[ComVisible (true)]
public sealed class FileInfo : FileSystemInfo
{
private bool exists;
#if MOONLIGHT
internal FileInfo ()
{
}
#endif
public FileInfo (string fileName)
{
if (fileName == null)
throw new ArgumentNullException ("fileName");
CheckPath (fileName);
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
OriginalPath = fileName;
FullPath = Path.GetFullPath (fileName);
}
private FileInfo (SerializationInfo info, StreamingContext context)
: base (info, context)
{
}
internal override void InternalRefresh ()
{
exists = File.Exists (FullPath);
}
// public properties
public override bool Exists {
get {
Refresh (false);
if (stat.Attributes == MonoIO.InvalidFileAttributes)
return false;
if ((stat.Attributes & FileAttributes.Directory) != 0)
return false;
return exists;
}
}
public override string Name {
get {
return Path.GetFileName (FullPath);
}
}
#if !NET_2_1
public bool IsReadOnly {
get {
if (!Exists)
throw new FileNotFoundException ("Could not find file \"" + OriginalPath + "\".", OriginalPath);
return ((stat.Attributes & FileAttributes.ReadOnly) != 0);
}
set {
if (!Exists)
throw new FileNotFoundException ("Could not find file \"" + OriginalPath + "\".", OriginalPath);
FileAttributes attrs = File.GetAttributes(FullPath);
if (value)
attrs |= FileAttributes.ReadOnly;
else
attrs &= ~FileAttributes.ReadOnly;
File.SetAttributes(FullPath, attrs);
}
}
[MonoLimitation ("File encryption isn't supported (even on NTFS).")]
[ComVisible (false)]
public void Encrypt ()
{
// MS.NET support this only on NTFS file systems, i.e. it's a file-system (not a framework) feature.
// otherwise it throws a NotSupportedException (or a PlatformNotSupportedException on older OS).
// we throw the same (instead of a NotImplementedException) because most code should already be
// handling this exception to work properly.
throw new NotSupportedException (Locale.GetText ("File encryption isn't supported on any file system."));
}
[MonoLimitation ("File encryption isn't supported (even on NTFS).")]
[ComVisible (false)]
public void Decrypt ()
{
// MS.NET support this only on NTFS file systems, i.e. it's a file-system (not a framework) feature.
// otherwise it throws a NotSupportedException (or a PlatformNotSupportedException on older OS).
// we throw the same (instead of a NotImplementedException) because most code should already be
// handling this exception to work properly.
throw new NotSupportedException (Locale.GetText ("File encryption isn't supported on any file system."));
}
#endif
public long Length {
get {
if (!Exists)
throw new FileNotFoundException ("Could not find file \"" + OriginalPath + "\".", OriginalPath);
return stat.Length;
}
}
public string DirectoryName {
get {
return Path.GetDirectoryName (FullPath);
}
}
public DirectoryInfo Directory {
get {
return new DirectoryInfo (DirectoryName);
}
}
// streamreader methods
public StreamReader OpenText ()
{
return new StreamReader (Open (FileMode.Open, FileAccess.Read));
}
public StreamWriter CreateText ()
{
return new StreamWriter (Open (FileMode.Create, FileAccess.Write));
}
public StreamWriter AppendText ()
{
return new StreamWriter (Open (FileMode.Append, FileAccess.Write));
}
// filestream methods
public FileStream Create ()
{
return File.Create (FullPath);
}
public FileStream OpenRead ()
{
return Open (FileMode.Open, FileAccess.Read, FileShare.Read);
}
public FileStream OpenWrite ()
{
return Open (FileMode.OpenOrCreate, FileAccess.Write);
}
public FileStream Open (FileMode mode)
{
return Open (mode, FileAccess.ReadWrite);
}
public FileStream Open (FileMode mode, FileAccess access)
{
return Open (mode, access, FileShare.None);
}
public FileStream Open (FileMode mode, FileAccess access, FileShare share)
{
return new FileStream (FullPath, mode, access, share);
}
// file methods
public override void Delete ()
{
MonoIOError error;
SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
if (!MonoIO.Exists (FullPath, out error))
// a weird MS.NET behaviour
return;
if (MonoIO.ExistsDirectory (FullPath, out error))
throw new UnauthorizedAccessException ("Access to the path \"" + FullPath + "\" is denied.");
if (!MonoIO.DeleteFile (FullPath, out error))
throw MonoIO.GetException (OriginalPath, error);
}
public void MoveTo (string destFileName)
{
if (destFileName == null)
throw new ArgumentNullException ("destFileName");
if (destFileName == Name || destFileName == FullName)
return;
if (!File.Exists (FullPath))
throw new FileNotFoundException ();
File.Move (FullPath, destFileName);
this.FullPath = Path.GetFullPath (destFileName);
}
public FileInfo CopyTo (string destFileName)
{
return CopyTo (destFileName, false);
}
public FileInfo CopyTo (string destFileName, bool overwrite)
{
if (destFileName == null)
throw new ArgumentNullException ("destFileName");
if (destFileName.Length == 0)
throw new ArgumentException ("An empty file name is not valid.", "destFileName");
string dest = Path.GetFullPath (destFileName);
if (overwrite && File.Exists (dest))
File.Delete (dest);
File.Copy (FullPath, dest);
return new FileInfo (dest);
}
public override string ToString ()
{
#if NET_2_1
// for Moonlight we *never* return paths, since ToString is not [SecurityCritical] we simply return the Name
return Name;
#else
return OriginalPath;
#endif
}
#if !NET_2_1
public FileSecurity GetAccessControl ()
{
throw new NotImplementedException ();
}
public FileSecurity GetAccessControl (AccessControlSections includeSections)
{
throw new NotImplementedException ();
}
[ComVisible (false)]
public FileInfo Replace (string destinationFileName,
string destinationBackupFileName)
{
string destinationFullPath = null;
if (!Exists)
throw new FileNotFoundException ();
if (destinationFileName == null)
throw new ArgumentNullException ("destinationFileName");
if (destinationFileName.Length == 0)
throw new ArgumentException ("An empty file name is not valid.", "destinationFileName");
destinationFullPath = Path.GetFullPath (destinationFileName);
if (!File.Exists (destinationFullPath))
throw new FileNotFoundException ();
FileAttributes attrs = File.GetAttributes (destinationFullPath);
if ( (attrs & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
throw new UnauthorizedAccessException ();
if (destinationBackupFileName != null) {
if (destinationBackupFileName.Length == 0)
throw new ArgumentException ("An empty file name is not valid.", "destinationBackupFileName");
File.Copy (destinationFullPath, Path.GetFullPath (destinationBackupFileName), true);
}
File.Copy (FullPath, destinationFullPath,true);
File.Delete (FullPath);
return new FileInfo (destinationFullPath);
}
[ComVisible (false)]
[MonoLimitation ("We ignore the ignoreMetadataErrors parameter")]
public FileInfo Replace (string destinationFileName,
string destinationBackupFileName,
bool ignoreMetadataErrors)
{
return Replace (destinationFileName, destinationBackupFileName);
}
public void SetAccessControl (FileSecurity fileSecurity)
{
throw new NotImplementedException ();
}
#endif
}
}
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