/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
using System;
using System.IO;
namespace Lucene.Net.Support
{
///
/// Represents the methods to support some operations over files.
///
public class FileSupport
{
///
/// Returns an array of abstract pathnames representing the files and directories of the specified path.
///
/// The abstract pathname to list it childs.
/// An array of abstract pathnames childs of the path specified or null if the path is not a directory
public static System.IO.FileInfo[] GetFiles(System.IO.FileInfo path)
{
if ((path.Attributes & FileAttributes.Directory) > 0)
{
String[] fullpathnames = Directory.GetFileSystemEntries(path.FullName);
System.IO.FileInfo[] result = new System.IO.FileInfo[fullpathnames.Length];
for (int i = 0; i < result.Length; i++)
result[i] = new System.IO.FileInfo(fullpathnames[i]);
return result;
}
else
return null;
}
// TODO: This filesupport thing is silly. Same goes with _TestUtil's RMDir.
// If we're removing a directory
public static System.IO.FileInfo[] GetFiles(System.IO.DirectoryInfo path)
{
return GetFiles(new FileInfo(path.FullName));
}
///
/// Returns a list of files in a give directory.
///
/// The full path name to the directory.
///
/// An array containing the files.
public static System.String[] GetLuceneIndexFiles(System.String fullName,
Index.IndexFileNameFilter indexFileNameFilter)
{
System.IO.DirectoryInfo dInfo = new System.IO.DirectoryInfo(fullName);
System.Collections.ArrayList list = new System.Collections.ArrayList();
foreach (System.IO.FileInfo fInfo in dInfo.GetFiles())
{
if (indexFileNameFilter.Accept(fInfo, fInfo.Name) == true)
{
list.Add(fInfo.Name);
}
}
System.String[] retFiles = new System.String[list.Count];
list.CopyTo(retFiles);
return retFiles;
}
// Disable the obsolete warning since we must use FileStream.Handle
// because Mono does not support FileSystem.SafeFileHandle at present.
#pragma warning disable 618
///
/// Flushes the specified file stream. Ensures that all buffered
/// data is actually written to the file system.
///
/// The file stream.
public static void Sync(System.IO.FileStream fileStream)
{
if (fileStream == null)
throw new ArgumentNullException("fileStream");
fileStream.Flush();
//if (OS.IsWindows)
//{
// if (!FlushFileBuffers(fileStream.Handle))
// throw new System.IO.IOException();
//}
//else if (OS.IsUnix)
//{
// if (fsync(fileStream.Handle) != IntPtr.Zero)
// throw new System.IO.IOException();
//}
//else
//{
// throw new NotImplementedException();
//}
}
#pragma warning restore 618
//[System.Runtime.InteropServices.DllImport("libc")]
//extern static IntPtr fsync(IntPtr fd);
//[System.Runtime.InteropServices.DllImport("kernel32.dll")]
//extern static bool FlushFileBuffers(IntPtr hFile);
}
}