public static void Move(string sourceDirName, string destDirName)
{
if (Path.GetPathRoot(sourceDirName) != Path.GetPathRoot(destDirName))
{
throw new ArgumentException();
}
// sourceDirName and destDirName validation in Path.GetFullPath()
sourceDirName = Path.GetFullPath(sourceDirName);
destDirName = Path.GetFullPath(destDirName);
var tryCopyAndDelete = false;
var srcRecord = FileSystemManager.AddToOpenList(sourceDirName);
try {
// Make sure sourceDir is actually a directory
if (!Exists(sourceDirName))
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.DirectoryNotFound);
}
// If Move() returns false, we'll try doing copy and delete to accomplish the move
tryCopyAndDelete = !DriveInfo.GetForPath(sourceDirName).Move(sourceDirName, destDirName);
}
finally {
FileSystemManager.RemoveFromOpenList(srcRecord);
}
if (tryCopyAndDelete)
{
RecursiveCopyAndDelete(sourceDirName, destDirName);
}
}
public FileEnum(string path, FileEnumFlags flags)
{
this.m_flags = flags;
this.m_path = path;
this.m_openForReadHandle = FileSystemManager.AddToOpenListForRead(this.m_path);
this.m_findFile = DriveInfo.GetForPath(this.m_path).Find(this.m_path, "*");
}
public static DirectoryInfo CreateDirectory(string path)
{
// path validation in Path.GetFullPath()
path = Path.GetFullPath(path);
/// According to MSDN, Directory.CreateDirectory on an existing
/// directory is no-op.
DriveInfo.GetForPath(path).CreateDirectory(path);
return(new DirectoryInfo(path));
}
public static void Delete(string path, bool recursive)
{
path = Path.GetFullPath(path);
var record = FileSystemManager.LockDirectory(path);
var drive = DriveInfo.GetForPath(path);
try {
var attributes = drive.GetAttributes(path);
if ((uint)attributes == 0xFFFFFFFF)
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.DirectoryNotFound);
}
if (((attributes & (FileAttributes.Directory)) == 0) ||
((attributes & (FileAttributes.ReadOnly)) != 0))
{
/// it's readonly or not a directory
throw new IOException("", (int)IOException.IOExceptionErrorCode.UnauthorizedAccess);
}
if (!Exists(path)) // make sure it is indeed a directory (and not a file)
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.DirectoryNotFound);
}
if (!recursive)
{
var ff = drive.Find(path, "*");
try {
if (ff.GetNext() != null)
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.DirectoryNotEmpty);
}
}
finally {
ff.Close();
}
}
drive.Delete(path);
}
finally {
// regardless of what happened, we need to release the directory when we're done
FileSystemManager.UnlockDirectory(record);
}
}
private static void RecursiveCopyAndDelete(string sourceDirName, string destDirName)
{
string[] files;
int filesCount, i;
var relativePathIndex = sourceDirName.Length + 1; // relative path starts after the sourceDirName and a path seperator
// We have to make sure no one else can modify it (for example, delete the directory and
// create a file of the same name) while we're moving
var recordSrc = FileSystemManager.AddToOpenList(sourceDirName);
try {
// Make sure sourceDir is actually a directory
if (!Exists(sourceDirName))
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.DirectoryNotFound);
}
// Make sure destDir does not yet exist
if (Exists(destDirName))
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.PathAlreadyExists);
}
DriveInfo.GetForPath(destDirName).CreateDirectory(destDirName);
files = Directory.GetFiles(sourceDirName);
filesCount = files.Length;
for (i = 0; i < filesCount; i++)
{
File.Copy(files[i], Path.Combine(destDirName, files[i].Substring(relativePathIndex)), false, true);
}
files = Directory.GetDirectories(sourceDirName);
filesCount = files.Length;
for (i = 0; i < filesCount; i++)
{
RecursiveCopyAndDelete(files[i], Path.Combine(destDirName, files[i].Substring(relativePathIndex)));
}
DriveInfo.GetForPath(sourceDirName).Delete(sourceDirName);
}
finally {
FileSystemManager.RemoveFromOpenList(recordSrc);
}
}
public void Reset()
{
if (this.m_disposed)
{
throw new ObjectDisposedException();
}
if (this.m_findFile != null)
{
this.m_findFile.Close();
}
if (this.m_openForReadHandle == null)
{
this.m_openForReadHandle = FileSystemManager.AddToOpenListForRead(this.m_path);
}
this.m_findFile = DriveInfo.GetForPath(this.m_path).Find(this.m_path, "*");
}
public void Refresh()
{
var record = FileSystemManager.AddToOpenListForRead(this.m_fullPath);
try
{
this._nativeFileInfo = DriveInfo.GetForPath(this.m_fullPath).GetFileSystemEntry(this.m_fullPath);
if (this._nativeFileInfo == null)
{
var errorCode = (this is FileInfo) ? IOException.IOExceptionErrorCode.FileNotFound : IOException.IOExceptionErrorCode.DirectoryNotFound;
throw new IOException("", (int)errorCode);
}
}
finally
{
FileSystemManager.RemoveFromOpenList(record);
}
}
public static bool Exists(string path)
{
// path validation in Path.GetFullPath()
path = Path.GetFullPath(path);
/// Is this the absolute root? this always exists.
if (path.Length == 3 && path[0] >= 'A' && path[0] <= 'Z' && path[1] == ':' && (path[2] == Path.DirectorySeparatorChar))
{
return(true);
}
else
{
try {
var attributes = DriveInfo.GetForPath(path).GetAttributes(path);
/// This is essentially file not found.
if ((uint)attributes == 0xFFFFFFFF)
{
return(false);
}
/// Need to make sure these are not FAT16 or FAT32 specific.
if ((((FileAttributes)attributes) & FileAttributes.Directory) == FileAttributes.Directory)
{
/// It is a directory.
return(true);
}
}
catch (Exception) {
return(false);
}
}
return(false);
}
public FileStream(string path, FileMode mode, FileAccess access, FileShare share, int bufferSize)
{
// This will perform validation on path
this._fileName = Path.GetFullPath(path);
// make sure mode, access, and share are within range
if (mode < FileMode.CreateNew || mode > FileMode.Append ||
access < FileAccess.Read || access > FileAccess.ReadWrite ||
share < FileShare.None || share > FileShare.ReadWrite)
{
throw new ArgumentOutOfRangeException();
}
// Get wantsRead and wantsWrite from access, note that they cannot both be false
this.wantsRead = (access & FileAccess.Read) == FileAccess.Read;
this.wantsWrite = (access & FileAccess.Write) == FileAccess.Write;
// You can't open for readonly access (wantsWrite == false) when
// mode is CreateNew, Create, Truncate or Append (when it's not Open or OpenOrCreate)
if (mode != FileMode.Open && mode != FileMode.OpenOrCreate && !this.wantsWrite)
{
throw new ArgumentException();
}
// We need to register the share information prior to the actual file open call (the NativeFileStream ctor)
// so subsequent file operation on the same file will behave correctly
this._fileRecord = FileSystemManager.AddToOpenList(this._fileName, (int)access, (int)share);
try {
this.drive = DriveInfo.GetForPath(this._fileName);
var attributes = this.drive.GetAttributes(this._fileName);
var exists = ((uint)attributes != 0xFFFFFFFF);
this.isReadOnly = (exists) ? (((FileAttributes)attributes) & FileAttributes.ReadOnly) == FileAttributes.ReadOnly : false;
// If the path specified is an existing directory, fail
if (exists && ((((FileAttributes)attributes) & FileAttributes.Directory) == FileAttributes.Directory))
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.UnauthorizedAccess);
}
// The seek limit is 0 (the beginning of the file) for all modes except Append
this._seekLimit = 0;
switch (mode)
{
case FileMode.CreateNew: // if the file exists, IOException is thrown
if (exists)
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.PathAlreadyExists);
}
this._nativeFileStream = this.drive.OpenFile(this._fileName, bufferSize);
break;
case FileMode.Create: // if the file exists, it should be overwritten
this._nativeFileStream = this.drive.OpenFile(this._fileName, bufferSize);
if (exists)
{
this._nativeFileStream.Length = 0;
}
break;
case FileMode.Open: // if the file does not exist, IOException/FileNotFound is thrown
if (!exists)
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.FileNotFound);
}
this._nativeFileStream = this.drive.OpenFile(this._fileName, bufferSize);
break;
case FileMode.OpenOrCreate: // if the file does not exist, it is created
this._nativeFileStream = this.drive.OpenFile(this._fileName, bufferSize);
break;
case FileMode.Truncate: // the file would be overwritten. if the file does not exist, IOException/FileNotFound is thrown
if (!exists)
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.FileNotFound);
}
this._nativeFileStream = this.drive.OpenFile(this._fileName, bufferSize);
this._nativeFileStream.Length = 0;
break;
case FileMode.Append: // Opens the file if it exists and seeks to the end of the file. Append can only be used in conjunction with FileAccess.Write
// Attempting to seek to a position before the end of the file will throw an IOException and any attempt to read fails and throws an NotSupportedException
if (access != FileAccess.Write)
{
throw new ArgumentException();
}
this._nativeFileStream = this.drive.OpenFile(this._fileName, bufferSize);
this._seekLimit = this._nativeFileStream.Seek(0, SeekOrigin.End);
break;
// We've already checked the mode value previously, so no need for default
//default:
// throw new ArgumentOutOfRangeException();
}
// Now that we have a valid NativeFileStream, we add it to the FileRecord, so it could gets clean up
// in case an eject or force format
this._fileRecord.NativeFileStream = this._nativeFileStream;
// Make sure the requests (wantsRead / wantsWrite) matches the filesystem capabilities (canRead / canWrite)
if ((this.wantsRead && !this.CanRead) || (this.wantsWrite && !this.CanWrite))
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.UnauthorizedAccess);
}
}
catch {
// something went wrong, clean up and re-throw the exception
if (this._nativeFileStream != null)
{
this._nativeFileStream.Close();
}
FileSystemManager.RemoveFromOpenList(this._fileRecord);
throw;
}
}
private static string[] GetChildren(string path, string searchPattern, bool isDirectory)
{
// path and searchPattern validation in Path.GetFullPath() and Path.NormalizePath()
path = Path.GetFullPath(path);
if (!Directory.Exists(path))
{
throw new IOException("", (int)IOException.IOExceptionErrorCode.DirectoryNotFound);
}
Path.NormalizePath(searchPattern, true);
var fileNames = new ArrayList();
var root = Path.GetPathRoot(path);
if (false && string.Equals(root, path)) //TODO check to see it always go here
/// This is special case. Return all the volumes.
/// Note this will not work, once we start having \\server\share like paths.
{
if (isDirectory)
{
var volumes = DriveInfo.GetDrives();
var count = volumes.Length;
for (var i = 0; i < count; i++)
{
fileNames.Add(volumes[i].RootDirectory.Name);
}
}
}
else
{
var record = FileSystemManager.AddToOpenListForRead(path);
IFileSystemEntryFinder ff = null;
try {
ff = DriveInfo.GetForPath(path).Find(path, searchPattern);
var targetAttribute = (isDirectory ? FileAttributes.Directory : 0);
var fileinfo = ff.GetNext();
while (fileinfo != null)
{
if ((fileinfo.Attributes & FileAttributes.Directory) == targetAttribute)
{
fileNames.Add(fileinfo.FileName);
}
fileinfo = ff.GetNext();
}
}
finally {
if (ff != null)
{
ff.Close();
}
FileSystemManager.RemoveFromOpenList(record);
}
}
return((string[])fileNames.ToArray(typeof(string)));
}
