package vfs

// VFS is the interface that wraps the basic methods of a virtual file system.
type VFS interface {
	// Name returns the name of the file system.
	Name() string

	// Size returns the total size of all files in the file system.
	Size() int64

	// Set sets the value of key as src.
	// Setting the same key multiple times, the last set call takes effect.
	Set(key string, src []byte) error

	// Delete deletes the value of key.
	Delete(key string) error

	// Get gets the value of key to dst, and returns dst no matter whether or not there is an error.
	Get(key string) ([]byte, error)

	// Stat returns the FileInfo of key.
	Stat(key string) (*FileInfo, error)

	// StatAll returns the FileInfo of all keys.
	StatAll() []*FileInfo
}