/// <summary>
/// Removes empty child directory
/// </summary>
/// <param name="name">Directory name</param>
/// <exception cref="InvalidOperationException">
/// Throws if child item is not a directory, or if child directory is not empty,
/// or if the item kind is not volume or directory, or if a child item with the specified name is not exists
/// </exception>
public void RemoveChildDirectory(string name)
{
this.ValidateCanHasChildItems();
IFileSystemItem directory = FileSystemItemFactory.CreateDirectory(name); // validate name
IFileSystemItem child = this.ChildItems.Where(item => FileSystemItemNameComparer.Equals(directory.Name, item.Name)).FirstOrDefault();
if (child is null)
{
throw new InvalidOperationException("Directory with the specified name is not exists.");
}
if (child.Kind != FileSystemItemKind.Directory)
{
throw new InvalidOperationException("Item with the specified name is not a directory.");
}
if (child.ChildItems.Count > 0)
{
throw new InvalidOperationException("Directory with the specified name is not empty.");
}
this.childItems.Remove(child);
}
/// <summary>
/// Adds child directory
/// </summary>
/// <param name="name">Directory name</param>
/// <exception cref="InvalidOperationException">
/// Throws if child directory or file with same name already exists,
/// or if the item kind is not volume or directory
/// </exception>
/// <returns>Added child directory</returns>
public IFileSystemItem AddChildDirectory(string name)
{
this.ValidateCanHasChildItems();
IFileSystemItem directory = FileSystemItemFactory.CreateDirectory(name);
if (this.ChildItems.Any(item => FileSystemItemNameComparer.Equals(directory.Name, item.Name)))
{
throw new InvalidOperationException("Directory or file with the specified name already exists.");
}
this.childItems.Add(directory);
return(directory);
}