securefilepath

type SecureFilePath interface {
	// Create a child path, given a segment (e.g. "child.txt"). Non-segments
	// like "../child.txt" or "/path/child.txt" will result in an error.
	Child(string) (SecureFilePath, error)

	// Return the full path as a string.
	Path() string

	// Parent returns the path to the parent of this path or this path
	// itself if it is the root.
	Parent() SecureFilePath

	// Base returns the basename (the last segment) of the path.
	Base() string

	// Return the children of the directory.
	Children() ([]SecureFilePath, error)

	// Exists determines whether a file exists at this path at the time of
	// the call.
	Exists() (bool, error)
}