/// <summary>
/// Creates a Windows user file system.
/// </summary>
/// <param name="license">A license string.</param>
/// <param name="userFileSystemRootPath">A root folder of your user file system. Your file system tree will be located under this folder.</param>
/// <param name="log">Logger.</param>
internal VfsEngine(string license, string userFileSystemRootPath, VirtualDriveBase virtualDrive, ILog log) : base(license, userFileSystemRootPath)
{
logger = new Logger("File System Engine", log);
this.virtualDrive = virtualDrive;
// We want our file system to run regardless of any errors.
// If any request to file system fails in user code or in Engine itself we continue processing.
ThrowExceptions = false;
StateChanged += Engine_StateChanged;
Error += Engine_Error;
Message += Engine_Message;
}
/// <summary>
/// Returns true if the item was created and must be synched to remote storage.
/// </summary>
/// <param name="virtualDrive">Vitrual drive.</param>
/// <returns>
/// True if the item was created in the user file system and does not exists
/// in the remote storage. False otherwise.
/// </returns>
public static bool IsNew(this PlaceholderItem placeholder, VirtualDriveBase virtualDrive)
{
// ETag absence signals that the item is new.
// However, ETag file may not exists during move operation,
// additionally checking OriginalPath presence.
// Can not rely on OriginalPath only,
// because MS Office files are being deleted and re-created during transactional save.
string originalPath = placeholder.GetOriginalPath();
bool eTagFileExists = File.Exists(virtualDrive.GetETagManager(placeholder.Path).ETagFilePath);
return(!eTagFileExists && string.IsNullOrEmpty(originalPath));
}
/// <summary>
/// Creates instance of this class.
/// </summary>
/// <param name="userFileSystemPath">File or folder path in the user file system.</param>
/// <param name="logger">Logger.</param>
public VfsFileSystemItem(string userFileSystemPath, ILogger logger, VfsEngine engine, VirtualDriveBase virtualDrive)
{
if (string.IsNullOrEmpty(userFileSystemPath))
{
throw new ArgumentNullException(nameof(userFileSystemPath));
}
if (logger == null)
{
throw new ArgumentNullException(nameof(logger));
}
UserFileSystemPath = userFileSystemPath;
Logger = logger;
Engine = engine;
VirtualDrive = virtualDrive;
}
/// <summary>
/// Creates instance of this class.
/// </summary>
/// <param name="path">File path in user file system.</param>
/// <param name="logger">Logger.</param>
public VfsFile(string path, ILogger logger, VfsEngine engine, VirtualDriveBase userEngine) : base(path, logger, engine, userEngine)
{
}
public VfsFolder(string path, ILogger logger, VfsEngine engine, VirtualDriveBase virtualDrive) : base(path, logger, engine, virtualDrive)
{
}