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// Copyright (C) 2011, Kenneth Skovhede
// http://www.hexad.dk, opensource@hexad.dk
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.Text;
using System.Collections.Generic;
using Alphaleonis.Win32.Filesystem;
namespace Duplicati.Library.Snapshots
{
/// <summary>
/// Handler for providing a snapshot like access to files and folders
/// </summary>
public class NoSnapshotWindows : NoSnapshot
{
private SystemIOWindows m_sysIO = new SystemIOWindows();
public NoSnapshotWindows(string[] sources)
: base(sources)
{
}
public NoSnapshotWindows(string[] sources, Dictionary<string, string> options)
: base(sources, options)
{
}
/// <summary>
/// Returns the symlink target if the entry is a symlink, and null otherwise
/// </summary>
/// <param name="file">The file or folder to examine</param>
/// <returns>The symlink target</returns>
public override string GetSymlinkTarget(string file)
{
return File.GetLinkTargetInfo(SystemIOWindows.PrefixWithUNC(file)).PrintName;
}
/// <summary>
/// Gets the attributes for the given file or folder
/// </summary>
/// <returns>The file attributes</returns>
/// <param name="file">The file or folder to examine</param>
public override System.IO.FileAttributes GetAttributes (string file)
{
return m_sysIO.GetFileAttributes(file);
}
/// <summary>
/// Returns the size of a file
/// </summary>
/// <param name="file">The full path to the file in non-snapshot format</param>
/// <returns>The lenth of the file</returns>
public override long GetFileSize (string file)
{
return m_sysIO.FileLength(file);
}
/// <summary>
/// Gets the last write time of a given file in UTC
/// </summary>
/// <param name="file">The full path to the file in non-snapshot format</param>
/// <returns>The last write time of the file</returns>
public override DateTime GetLastWriteTimeUtc (string file)
{
if (!SystemIOWindows.IsPathTooLong(file))
try { return base.GetLastWriteTimeUtc(file); }
catch (System.IO.PathTooLongException) { }
return File.GetLastWriteTimeUtc(SystemIOWindows.PrefixWithUNC(file));
}
/// <summary>
/// Opens a file for reading
/// </summary>
/// <param name="file">The full path to the file in non-snapshot format</param>
/// <returns>An open filestream that can be read</returns>
public override System.IO.Stream OpenRead (string file)
{
if (!SystemIOWindows.IsPathTooLong(file))
try { return base.OpenRead(file); }
catch (System.IO.PathTooLongException) { }
return File.OpenRead(SystemIOWindows.PrefixWithUNC(file));
}
/// <summary>
/// Lists all files in the given folder
/// </summary>
/// <returns>All folders found in the folder</returns>
/// <param name='folder'>The folder to examinate</param>
protected override string[] ListFiles (string folder)
{
if (!SystemIOWindows.IsPathTooLong(folder))
try { return base.ListFiles(folder); }
catch (System.IO.PathTooLongException) { }
string[] tmp = Directory.GetFiles(SystemIOWindows.PrefixWithUNC(folder));
string[] res = new string[tmp.Length];
for(int i = 0; i < tmp.Length; i++)
res[i] = SystemIOWindows.StripUNCPrefix(tmp[i]);
return res;
}
/// <summary>
/// Lists all folders in the given folder
/// </summary>
/// <returns>All folders found in the folder</returns>
/// <param name='folder'>The folder to examinate</param>
protected override string[] ListFolders (string folder)
{
if (!SystemIOWindows.IsPathTooLong(folder))
try { return base.ListFolders(folder); }
catch (System.IO.PathTooLongException) { }
string[] tmp = Directory.GetDirectories(SystemIOWindows.PrefixWithUNC(folder));
string[] res = new string[tmp.Length];
for (int i = 0; i < tmp.Length; i++)
res[i] = SystemIOWindows.StripUNCPrefix(tmp[i]);
return res;
}
/// <summary>
/// Gets the metadata for the given file or folder
/// </summary>
/// <returns>The metadata for the given file or folder</returns>
/// <param name="file">The file or folder to examine</param>
public override Dictionary<string, string> GetMetadata(string file)
{
return null;
}
/// <summary>
/// Gets a value indicating if the path points to a block device
/// </summary>
/// <returns><c>true</c> if this instance is a block device; otherwise, <c>false</c>.</returns>
/// <param name="file">The file or folder to examine</param>
public override bool IsBlockDevice(string file)
{
return false;
}
}
}
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