/// <summary>
/// 根据文件大小创建文件。
/// 注意：多个用户同时上传相同文件时，可能会同时创建相同文件。
/// </summary>
public void make(string filePath, long len)
{
//文件不存在则创建
if (string.IsNullOrEmpty(filePath))
{
return;
}
if (!LongPathFile.Exists(filePath))
{
var pos = filePath.LastIndexOf('\\');
if (-1 == pos)
{
pos = filePath.LastIndexOf('/');
}
var dir = filePath.Substring(0, pos);
//自动创建目录
if (!LongPathDirectory.Exists(dir))
{
System.Diagnostics.Debug.WriteLine(string.Format("路径不存在：{0}", dir));
PathTool.createDirectory(dir);
}
else
{
System.Diagnostics.Debug.WriteLine(string.Format("路径存在：{0}", dir));
}
var fs = LongPathFile.Open(filePath, FileMode.Create, FileAccess.Write);
fs.SetLength(len);
fs.Close();
}
}
public static bool Exists(string path)
{
#if DOTNET5_4
return(Directory.Exists(path));
#else
return(LongPathDirectory.Exists(path));
#endif
}
public static bool Exists(string path)
{
if (path.Length < MAX_PATH)
{
return(System.IO.Directory.Exists(path));
}
else
{
return(LongPathDirectory.Exists(path));
}
}
public static bool Exists(string path)
{
#if DOTNET5_4
return(Directory.Exists(path));
#else
if (DMLibTestConstants.SupportUNCPath)
{
path = LongPath.ToUncPath(path);
}
return(LongPathDirectory.Exists(path));
#endif
}
/// <summary>
/// Determines whether the specified path exists and refers to a junction point.
/// </summary>
/// <param name = "path">The junction point path</param>
/// <returns>True if the specified path represents a junction point</returns>
/// <exception cref = "IOException">Thrown if the specified path is invalid
/// or some other error occurs</exception>
public static bool Exists(Path path)
{
if (!LongPathDirectory.Exists(path))
{
return(false);
}
using (var handle = OpenReparsePoint(path, EFileAccess.GenericRead))
{
var target = InternalGetTarget(handle);
return(target != null);
}
}
private void OnFileSystemEntriesListBoxMouseDoubleClick(object sender, MouseEventArgs e)
{
if (fileSystemEntriesListBox.SelectedItem != null)
{
string path = (string)fileSystemEntriesListBox.SelectedItem;
if (LongPathDirectory.Exists(path))
{
this.currentPath.Text = path;
}
RefreshFileList();
}
}
bool IDirectoryAdapter.Exists(string path)
{
AssertAllowed(path);
#if !MONO
var mTx = CurrentTransaction();
if (mTx.HasValue)
{
return(((IDirectoryAdapter)mTx.Value).Exists(path));
}
#endif
return(LongPathDirectory.Exists(path));
}
/// <summary>
/// Deletes a junction point at the specified source directory along with the directory itself.
/// Does nothing if the junction point does not exist.
/// </summary>
/// <remarks>
/// Only works on NTFS.
/// </remarks>
/// <param name = "junctionPoint">The junction point path</param>
public static void Delete(Path junctionPoint)
{
if (!LongPathDirectory.Exists(junctionPoint))
{
if (LongPathFile.Exists(junctionPoint))
{
throw new IOException("Path is not a junction point.");
}
return;
}
using (var handle = OpenReparsePoint(junctionPoint, EFileAccess.GenericWrite))
{
var reparseDataBuffer = new REPARSE_DATA_BUFFER();
reparseDataBuffer.ReparseTag = IO_REPARSE_TAG_MOUNT_POINT;
reparseDataBuffer.ReparseDataLength = 0;
reparseDataBuffer.PathBuffer = new byte[0x3ff0];
var inBufferSize = Marshal.SizeOf(reparseDataBuffer);
var inBuffer = Marshal.AllocHGlobal(inBufferSize);
try
{
Marshal.StructureToPtr(reparseDataBuffer, inBuffer, false);
int bytesReturned;
var result = DeviceIoControl(handle.DangerousGetHandle(), FSCTL_DELETE_REPARSE_POINT,
inBuffer, 8, IntPtr.Zero, 0, out bytesReturned, IntPtr.Zero);
if (!result)
{
ThrowLastWin32Error("Unable to delete junction point.");
}
}
finally
{
Marshal.FreeHGlobal(inBuffer);
}
try
{
LongPathDirectory.Delete(junctionPoint);
}
catch (IOException ex)
{
throw new IOException("Unable to delete junction point.", ex);
}
}
}
/// <summary>
/// 自动创建多层级路径
/// </summary>
/// <param name="path"></param>
/// <param name="separator">路径分隔符，默认：/</param>
public static void createDirectory(string path, char separator = '/')
{
var dirs = path.Split(separator);
var folder = "";
foreach (var dir in dirs)
{
if (folder != "")
{
folder = folder + "/" + dir;
}
else
{
folder = dir;
}
if (!LongPathDirectory.Exists(folder))
{
LongPathDirectory.Create(folder);
}
System.Diagnostics.Debug.WriteLine(folder);
}
}
private void OnDeleteButtonClick(object sender, EventArgs e)
{
string selectedPath = (string)fileSystemEntriesListBox.SelectedItem;
try {
if (LongPathDirectory.Exists(selectedPath))
{
LongPathDirectory.Delete(selectedPath);
}
else
{
LongPathFile.Delete(selectedPath);
}
}
catch (IOException ex) {
ShowError(ex);
}
catch (UnauthorizedAccessException ex) {
ShowError(ex);
}
RefreshFileList();
}
public static IEnumerable <string> EnumerateFiles(
string path,
string searchPattern,
string fromFilePath,
SearchOption searchOption,
bool followsymlink,
CancellationToken cancellationToken)
{
Utils.CheckCancellation(cancellationToken);
if ((searchOption != SearchOption.TopDirectoryOnly) && (searchOption != SearchOption.AllDirectories))
{
throw new ArgumentOutOfRangeException("searchOption");
}
// Remove whitespaces in the end.
searchPattern = searchPattern.TrimEnd();
if (searchPattern.Length == 0)
{
// Returns an empty string collection.
return(new List <string>());
}
// To support patterns like "folderA\" aiming at listing files under some folder.
if ("." == searchPattern)
{
searchPattern = "*";
}
Utils.CheckCancellation(cancellationToken);
CheckSearchPattern(searchPattern);
Utils.CheckCancellation(cancellationToken);
// Check path permissions.
string fullPath = null;
if (Interop.CrossPlatformHelpers.IsWindows)
{
fullPath = LongPath.ToUncPath(path);
}
else
{
fullPath = Path.GetFullPath(path);
}
#if CODE_ACCESS_SECURITY
CheckPathDiscoveryPermission(fullPath);
#endif // CODE_ACCESS_SECURITY
string patternDirectory = LongPath.GetDirectoryName(searchPattern);
#if CODE_ACCESS_SECURITY
if (!string.IsNullOrEmpty(patternDirectory))
{
CheckPathDiscoveryPermission(LongPath.Combine(fullPath, patternDirectory));
}
#endif // CODE_ACCESS_SECURITY
if (!string.IsNullOrEmpty(fromFilePath) &&
!string.IsNullOrEmpty(patternDirectory))
{
// if file pattern is like folder\fileName*, we'll list location\folder with pattern fileName*
// but the listted relative path will still be like folder\fileName1, and the continuation token will look the same.
// Then here we need to make continuation token to be path relative to location\folder.
string tmpPatternDir = AppendDirectorySeparator(patternDirectory);
fromFilePath = fromFilePath.Substring(tmpPatternDir.Length);
}
string fullPathWithPattern = LongPath.Combine(fullPath, searchPattern);
// To support patterns like "folderA\" aiming at listing files under some folder.
char lastC = fullPathWithPattern[fullPathWithPattern.Length - 1];
if (Path.DirectorySeparatorChar == lastC ||
Path.AltDirectorySeparatorChar == lastC ||
Path.VolumeSeparatorChar == lastC)
{
fullPathWithPattern = fullPathWithPattern + '*';
}
string directoryName = AppendDirectorySeparator(LongPath.GetDirectoryName(fullPathWithPattern));
string filePattern = fullPathWithPattern.Substring(directoryName.Length);
if (!LongPathDirectory.Exists(directoryName))
{
throw new DirectoryNotFoundException(
string.Format(
CultureInfo.CurrentCulture,
Resources.PathNotFound,
directoryName));
}
Utils.CheckCancellation(cancellationToken);
return(InternalEnumerateFiles(directoryName, filePattern, fromFilePath, searchOption, followsymlink, cancellationToken));
}
private static IEnumerable <string> InternalEnumerateFiles(
string directoryName,
string filePattern,
string fromFilePath,
SearchOption searchOption,
bool followsymlink,
CancellationToken cancellationToken)
{
Stack <string> folders = new Stack <string>();
Stack <string> currentFolderSubFolders = new Stack <string>();
folders.Push(directoryName);
string[] pathSegList = null;
bool passedContinuationToken = false;
int pathSegListIndex = 0;
if (null != fromFilePath)
{
pathSegList = fromFilePath.Split(new char[] { Path.DirectorySeparatorChar });
}
else
{
passedContinuationToken = true;
}
while (folders.Count > 0)
{
string folder = AppendDirectorySeparator(folders.Pop());
Utils.CheckCancellation(cancellationToken);
// Skip non-existent folders
if (!LongPathDirectory.Exists(folder))
{
#if DOTNET5_4
if (CrossPlatformHelpers.IsLinux)
{
if (!SymlinkedDirExists(folder))
{
continue;
}
}
else
{
continue;
}
#else
continue;
#endif
}
#if CODE_ACCESS_SECURITY // Only accessible to fully trusted code in non-CAS models
try
{
CheckPathDiscoveryPermission(folder);
}
catch (SecurityException)
{
// Ignore this folder if we have no right to discovery it.
continue;
}
catch (UnauthorizedAccessException)
{
// Ignore this folder if we have no right to discovery it.
continue;
}
#else // CODE_ACCESS_SECURITY
try
{
// In non-CAS scenarios, it's still important to check for folder accessibility
// since the OS can block access to some paths. Getting files from a location
// will force path discovery checks which will indicate whether or not the user
// is authorized to access the directory.
foreach (var fileItem in LongPathDirectory.EnumerateFileSystemEntries(folder, "*", SearchOption.TopDirectoryOnly))
{
// Just try to get the first item in directly to check whether has permission to access the directory.
break;
}
}
catch (SecurityException)
{
// Ignore this folder if we have no right to discovery it.
continue;
}
catch (UnauthorizedAccessException)
{
// Ignore this folder if we have no right to discovery it.
continue;
}
catch (Exception ex)
{
throw new TransferException(string.Format(CultureInfo.CurrentCulture, Resources.EnumerateDirectoryException, folder), ex);
}
#endif // CODE_ACCESS_SECURITY
// Return all files contained directly in this folder (which occur after the continuationTokenFile)
// Only consider the folder if the continuation token is already past or the continuation token may be passed by
// a file within this directory (based on pathSegListIndex and the patSegList.Length)
if (passedContinuationToken ||
(pathSegList.Length - 1 == pathSegListIndex))
{
string continuationTokenFile = null;
if (!passedContinuationToken)
{
continuationTokenFile = pathSegList[pathSegListIndex];
}
// Load files directly under this folder.
foreach (var filePath in Utils.CatchException(() =>
{
return(LongPathDirectory.EnumerateFileSystemEntries(folder, filePattern, SearchOption.TopDirectoryOnly));
},
(ex) =>
{
throw new TransferException(string.Format(CultureInfo.CurrentCulture, Resources.EnumerateDirectoryException, folder), ex);
}))
{
Utils.CheckCancellation(cancellationToken);
EnumerateFileEntryInfo fileEntryInfo = null;
try
{
#if DOTNET5_4
if (CrossPlatformHelpers.IsLinux)
{
fileEntryInfo = GetFileEntryInfo(filePath);
}
else
{
fileEntryInfo = new EnumerateFileEntryInfo()
{
FileName = LongPath.GetFileName(filePath),
FileAttributes = LongPathFile.GetAttributes(filePath)
};
}
#else
fileEntryInfo = new EnumerateFileEntryInfo()
{
FileName = LongPath.GetFileName(filePath),
FileAttributes = LongPathFile.GetAttributes(filePath)
};
#endif
}
// Cross-plat file system accessibility settings may cause exceptions while
// retrieving attributes from inaccessible paths. These paths shold be skipped.
catch (FileNotFoundException) { }
catch (IOException) { }
catch (UnauthorizedAccessException) { }
catch (Exception ex)
{
throw new TransferException(string.Format(CultureInfo.CurrentCulture, Resources.FailedToGetFileInfoException, filePath), ex);
}
if (null == fileEntryInfo)
{
continue;
}
if (FileAttributes.Directory != (fileEntryInfo.FileAttributes & FileAttributes.Directory))
{
if (passedContinuationToken)
{
yield return(LongPath.Combine(folder, fileEntryInfo.FileName));
}
else
{
if (CrossPlatformHelpers.IsLinux)
{
if (!passedContinuationToken)
{
if (string.Equals(fileEntryInfo.FileName, continuationTokenFile, StringComparison.Ordinal))
{
passedContinuationToken = true;
}
}
else
{
yield return(LongPath.Combine(folder, fileEntryInfo.FileName));
}
}
else
{
// Windows file system is case-insensitive; OSX and Linux are case-sensitive
var comparison = CrossPlatformHelpers.IsWindows ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal;
int compareResult = string.Compare(fileEntryInfo.FileName, continuationTokenFile, comparison);
if (compareResult < 0)
{
// Skip files prior to the continuation token file
continue;
}
passedContinuationToken = true;
if (compareResult > 0)
{
yield return(LongPath.Combine(folder, fileEntryInfo.FileName));
}
}
}
}
}
// Passed folder which continuation token file is under,
// set passedContinuationToken to true.
passedContinuationToken = true;
}
// Next add sub-folders for processing
if (SearchOption.AllDirectories == searchOption)
{
string fromSubfolder = null;
bool passedSubfoler = passedContinuationToken;
if (!passedContinuationToken)
{
fromSubfolder = pathSegList[pathSegListIndex];
pathSegListIndex++;
}
// Add sub-folders.
foreach (var filePath in Utils.CatchException(() =>
{
return(LongPathDirectory.EnumerateFileSystemEntries(folder, "*", SearchOption.TopDirectoryOnly));
},
(ex) =>
{
throw new TransferException(string.Format(CultureInfo.CurrentCulture, Resources.EnumerateDirectoryException, folder), ex);
}))
{
Utils.CheckCancellation(cancellationToken);
EnumerateFileEntryInfo fileEntryInfo = null;
try
{
if (CrossPlatformHelpers.IsLinux)
{
fileEntryInfo = GetFileEntryInfo(filePath);
}
else
{
fileEntryInfo = new EnumerateFileEntryInfo()
{
FileName = LongPath.GetFileName(filePath),
FileAttributes = LongPathFile.GetAttributes(filePath)
};
}
}
// Cross-plat file system accessibility settings may cause exceptions while
// retrieving attributes from inaccessible paths. These paths shold be skipped.
catch (FileNotFoundException) { }
catch (IOException) { }
catch (UnauthorizedAccessException) { }
catch (Exception ex)
{
throw new TransferException(string.Format(CultureInfo.CurrentCulture, Resources.FailedToGetFileInfoException, filePath), ex);
}
if (null == fileEntryInfo)
{
continue;
}
if (FileAttributes.Directory == (fileEntryInfo.FileAttributes & FileAttributes.Directory) &&
!fileEntryInfo.FileName.Equals(@".") &&
!fileEntryInfo.FileName.Equals(@".."))
{
bool toBeEnumerated = false;
if (CrossPlatformHelpers.IsLinux)
{
toBeEnumerated = ToEnumerateTheSubDir(LongPath.Combine(folder, fileEntryInfo.FileName), fileEntryInfo, followsymlink);
}
// TODO: Ignore junction point or not. Make it configurable.
else if (FileAttributes.ReparsePoint != (fileEntryInfo.FileAttributes & FileAttributes.ReparsePoint))
{
toBeEnumerated = true;
}
if (toBeEnumerated)
{
if (passedSubfoler)
{
currentFolderSubFolders.Push(LongPath.Combine(folder, fileEntryInfo.FileName));
}
else
{
if (CrossPlatformHelpers.IsLinux)
{
if (string.Equals(fileEntryInfo.FileName, fromSubfolder, StringComparison.Ordinal))
{
passedSubfoler = true;
currentFolderSubFolders.Push(LongPath.Combine(folder, fileEntryInfo.FileName));
}
}
else
{
// Windows file system is case-insensitive; OSX and Linux are case-sensitive
var comparison = CrossPlatformHelpers.IsWindows ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal;
int compareResult = string.Compare(fileEntryInfo.FileName, fromSubfolder, comparison);
if (compareResult >= 0)
{
passedSubfoler = true;
currentFolderSubFolders.Push(LongPath.Combine(folder, fileEntryInfo.FileName));
if (compareResult > 0)
{
passedContinuationToken = true;
}
}
}
}
}
}
}
if (currentFolderSubFolders.Count <= 0)
{
passedContinuationToken = true;
}
else
{
while (currentFolderSubFolders.Count > 0)
{
folders.Push(currentFolderSubFolders.Pop());
}
}
}
}
}
public override bool DirectoryExists(string directoryPath)
{
return(LongPathDirectory.Exists(directoryPath));
}
