/// <summary>
/// Performs a directory deletion.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="directory">The directory to delete.</param>
/// <param name="execute">if set to true, the operation gets executed.</param>
private void PerformDirectoryDeletionOperation(IFileSystem fileSystem, IDirectoryInfo directory, bool execute)
{
var eventArgs = new DirectoryDeletionEventArgs(directory.FullName);
this.OnDeletingDirectory(eventArgs);
var directoryScanner = new FileSystemScanner(directory);
directoryScanner.FileFound += (sender, e) =>
this.OnProceededFile(new FileProceededEventArgs(e.File.FullName, e.File.Length));
directoryScanner.Start();
if (execute)
{
try
{
fileSystem.DeleteDirectory(directory);
this.OnDeletedDirectory(eventArgs);
}
catch (AccessException)
{
this.OnDirectoryDeletionError(new DirectoryDeletionEventArgs(directory.FullName));
}
}
}
/// <summary>
/// Checks the source directory recursively for directories and files that are not in the target directory and deletes them.
/// </summary>
/// <param name="sourceDirectory">The source directory.</param>
/// <param name="targetDirectory">The target directory.</param>
/// <param name="execute">if set to true, the modifications, creations and deletions will be executed executed.</param>
protected void CheckDeletionsRecursively(IDirectoryInfo sourceDirectory, IDirectoryInfo targetDirectory, bool execute)
{
if (!sourceDirectory.Exists)
{
throw new ArgumentException("The source directory doesn't exist.", Reflector.GetMemberName(() => sourceDirectory));
}
if (!targetDirectory.Exists)
{
throw new ArgumentException("The target directory doesn't exist.", Reflector.GetMemberName(() => targetDirectory));
}
var rootScanner = new FileSystemScanner(sourceDirectory);
IDirectoryInfo currentTargetDirectory = targetDirectory;
rootScanner.DirectoryFound += (sender, e) =>
{
this.CheckPause();
if (this.IsStopped)
{
rootScanner.Stop();
return;
}
string newTargetDirectoryPath = this.TargetFileSystem.CombinePath(currentTargetDirectory.FullName, e.Directory.Name);
bool newTargetDirectoryExists = this.SourceFileSystem.DirectoryExists(newTargetDirectoryPath);
bool newTargetDirectoryIsExcluded = this.deletedDirectoryPaths.Any(path => NormalizePath(newTargetDirectoryPath).StartsWith(path));
// Delete the directory if it doesn't exist in the source directory
if (!newTargetDirectoryExists && !newTargetDirectoryIsExcluded)
{
// If we perform a preview, add the directory that gets deleted to the deleted paths,
// so that the subdirectories don't get included.
if (!execute)
{
this.deletedDirectoryPaths.Add(NormalizePath(newTargetDirectoryPath));
}
this.PerformDirectoryDeletionOperation(this.TargetFileSystem, e.Directory, execute);
}
currentTargetDirectory = this.SourceFileSystem.GetDirectoryInfo(newTargetDirectoryPath);
};
rootScanner.DirectoryProceeded += (sender, e) =>
{
this.CheckPause();
if (this.IsStopped)
{
rootScanner.Stop();
return;
}
//When a directory has been completely proceeded, jump to the parent directory of the target directory
currentTargetDirectory = currentTargetDirectory.Parent;
};
rootScanner.FileFound += (sender, e) =>
{
this.CheckPause();
if (this.IsStopped)
{
rootScanner.Stop();
return;
}
string targetFilePath = this.TargetFileSystem.CombinePath(currentTargetDirectory.FullName, e.File.Name);
//Save the file path and length for the case that the file gets deleted,
//so that the FileProceeded event can be raises properly
string sourceFilePath = e.File.FullName;
long sourceFileLength = e.File.Length;
bool targetFileExists = this.SourceFileSystem.FileExists(targetFilePath);
bool targetFileIsExcluded = this.deletedDirectoryPaths.Any(path => NormalizePath(targetFilePath).StartsWith(path));
//Check if the file doesn't exist in the target directory
if (!targetFileExists && !targetFileIsExcluded)
{
this.PerformFileDeletionOperation(this.TargetFileSystem, e.File, execute);
//Add the deleted file to the proceeded files, to avoid a double-counting
//(this can happen when the deletion of the file fails)
this.proceededFilePaths.Add(e.File.Name);
}
this.OnProceededFile(new FileProceededEventArgs(sourceFilePath, sourceFileLength));
};
rootScanner.Start();
}
/// <summary>
/// Backups a directory recursively to another directory (without deletions).
/// </summary>
/// <param name="sourceDirectory">The source directory.</param>
/// <param name="targetDirectory">The target directory.</param>
/// <param name="execute">if set to true, the modifications, creations and deletions will be executed executed.</param>
protected void BackupDirectoryRecursively(IDirectoryInfo sourceDirectory, IDirectoryInfo targetDirectory, bool execute)
{
if (!sourceDirectory.Exists)
{
throw new ArgumentException("The source directory doesn't exist.", Reflector.GetMemberName(() => sourceDirectory));
}
if (!targetDirectory.Exists)
{
throw new ArgumentException("The target directory doesn't exist.", Reflector.GetMemberName(() => targetDirectory));
}
var rootScanner = new FileSystemScanner(sourceDirectory);
IDirectoryInfo currentTargetDirectory = targetDirectory;
rootScanner.DirectoryFound += (sender, e) =>
{
this.CheckPause();
if (this.IsStopped)
{
rootScanner.Stop();
return;
}
//Assemble the path of the new target directory
string newTargetDirectoryPath = this.TargetFileSystem.CombinePath(currentTargetDirectory.FullName, e.Directory.Name);
bool newTargetDirectoryExists = this.TargetFileSystem.DirectoryExists(newTargetDirectoryPath);
bool newTargetDirectoryIsExcluded = this.excludedPaths.Any(path => NormalizePath(newTargetDirectoryPath).StartsWith(path));
//Check if the new target directory exists and if not, create it
if (!newTargetDirectoryExists && !newTargetDirectoryIsExcluded)
{
this.PerformDirectoryCreationOperation(this.TargetFileSystem, e.Directory,
currentTargetDirectory, execute);
}
currentTargetDirectory = this.TargetFileSystem.GetDirectoryInfo(newTargetDirectoryPath);
};
rootScanner.DirectoryProceeded += (sender, e) =>
{
this.CheckPause();
if (this.IsStopped)
{
rootScanner.Stop();
return;
}
//When a directory has been completely proceeded, jump to the parent directory of the target directory
if (currentTargetDirectory.Parent != null)
{
currentTargetDirectory = currentTargetDirectory.Parent;
}
};
rootScanner.FileFound += (sender, e) =>
{
this.CheckPause();
if (this.IsStopped)
{
rootScanner.Stop();
return;
}
//Assemble the path of the target file
string targetFilePath = this.TargetFileSystem.CombinePath(currentTargetDirectory.FullName, e.File.Name);
//The file must not be a contained in any subfolder of the excluded folders
if (!this.excludedPaths.Any(path => NormalizePath(targetFilePath).StartsWith(path)))
{
//Check if the target file exists in the target directory and if not, create it
if (!this.TargetFileSystem.FileExists(targetFilePath))
{
this.PerformFileCreationOperation(this.SourceFileSystem, this.TargetFileSystem, e.File, currentTargetDirectory, execute);
//Add the created file to the proceeded files, to avoid a double-counting
this.proceededFilePaths.Add(this.TargetFileSystem.CombinePath(currentTargetDirectory.FullName, e.File.Name));
}
//Check if the source file is newer than the target file
else if (IsFileModified(e.File, this.TargetFileSystem.GetFileInfo(targetFilePath)))
{
this.PerformFileModificationOperation(this.SourceFileSystem, this.TargetFileSystem, e.File, currentTargetDirectory, execute);
//Add the created file to the proceeded files, to avoid a double-counting
this.proceededFilePaths.Add(this.TargetFileSystem.CombinePath(currentTargetDirectory.FullName, e.File.Name));
}
this.OnProceededFile(new FileProceededEventArgs(e.File.FullName, e.File.Length));
}
};
rootScanner.Start();
}