NewDir creates a Dir from the specified path, recursively.

NewFile creates a new File from the specified path.

NewTree creates a Tree from the specified path, recursively.

ErrAlreadyClosed is returned when a file is closed twice.

ErrDirectoryCollision occurs when merging directories with the name subdir names.

ErrFileCollision occurs when merging directories with the name file names.

ErrFileOpen is returned when a file is opened twice.

ErrMissingDir occurs when requesting a subtree for a non-existent directory.

ErrNotOpen is returned when a file is accessed while closed.

Dir represents a generic directory on Disk.

File is a generic representation of a File on disk.

Tree represents a generic file tree on disk.