fsys

type FS interface {
	Open(path string) (fs.File, error)

	OpenFile(name string, flag int, perm fs.FileMode) (*os.File, error)

	Create(path string) (*os.File, error)

	// Readfile returns the content of a given file
	ReadFile(path string) ([]byte, error)

	// WriteFile writes the data to a file at the given path,
	// it overwrites existing content
	WriteFile(path string, data []byte, perm fs.FileMode) error

	// Calculate a sha256 cheksum on the file
	Sha256(path string) (string, error)

	// Walk walks the file system with the given WalkDirFunc.
	Walk(path string, walkFn fs.WalkDirFunc) error

	// Exists is true if the path exists in the file system.
	Exists(path string) bool

	// Stat returns a FileInfo describing the named file from the file system.
	Stat(path string) (fs.FileInfo, error)

	// Glob returns the list of matching files,
	// emulating https://golang.org/pkg/path/filepath/#Glob
	Glob(pattern string) ([]string, error)

	// MkDir makes a directory.
	Mkdir(path string) error

	// MkDirAll makes a directory path, creating intervening directories.
	MkdirAll(path string) error

	// RemoveAll removes path and any children it contains.
	RemoveAll(path string) error

	// RemoveAll removes path and any children it contains.
	Remove(path string) error
}