/// <summary>
/// Create intersection with another option
/// </summary>
/// <param name="option"></param>
/// <returns>this if <paramref name="option"/> is null or new instance with intersection</returns>
public virtual AllOptions Intersection(IOption option)
{
if (option == null)
{
return(this);
}
AllOptions result = new AllOptions();
result.CanBrowse = this.CanBrowse | option.CanBrowse();
result.CanGetEntry = this.CanGetEntry | option.CanGetEntry();
result.CanObserve = this.CanObserve | option.CanObserve();
result.CanOpen = this.CanOpen | option.CanOpen();
result.CanRead = this.CanRead | option.CanRead();
result.CanWrite = this.CanWrite | option.CanWrite();
result.CanCreateFile = this.CanCreateFile | option.CanCreateFile();
result.CanDelete = this.CanDelete | option.CanDelete();
result.CanSetFileAttribute = this.CanSetFileAttribute | option.CanSetFileAttribute();
result.CanMount = this.CanMount | option.CanMount();
result.CanCreateFile = this.CanCreateFile | option.CanCreateFile();
result.CanDelete = this.CanDelete | option.CanDelete();
result.CanMove = this.CanMove | option.CanMove();
result.CanCreateDirectory = this.CanCreateDirectory | option.CanCreateDirectory();
result.CanMount = this.CanMount | option.CanMount();
result.CanUnmount = this.CanUnmount | option.CanUnmount();
result.CanListMountPoints = this.CanListMountPoints | option.CanListMountPoints();
result.SubPath = this.SubPath ?? option.SubPath();
return(result);
}
/// <summary>
/// Read options from <paramref name="option"/> and return flattened object.
/// </summary>
/// <param name="option"></param>
/// <returns></returns>
public static AllOptions Read(IOption option)
{
AllOptions result = new AllOptions();
result.ReadFrom(option);
return(result);
}
/// <summary>
/// Create adapter that adapts <paramref name="sourceFilesystem"/> into <see cref="IFileProvider"/>.
/// </summary>
/// <param name="sourceFilesystem"></param>
/// <param name="option">(optional) decorating options, such as <see cref="IToken"/></param>
public FileSystemProvider(IFileSystem sourceFilesystem, IOption option = null) : base()
{
FileSystem = sourceFilesystem ?? throw new ArgumentNullException(nameof(sourceFilesystem));
this.options = AllOptions.Read(Option.Union(sourceFilesystem, option));
this.token = option.AsOption <IToken>();
}