blache

type Creator interface {
	// Create a directory.
	MkdirAll(dir string) error
	// Create a file into the directory dir (can be empty) with the data.
	// This method can be called concurrently an many many time.
	Create(dir, name string, data []byte) error
}

type Option struct {
	// The regions sources.
	In fs.FS
	// The output. Must be defined.
	Out Creator
	// Disable bar print
	NoBar bool
	// The max number of CPU who can be used.
	// If less 0, it will the the number of CPU.
	CPU int
	// Log the error. Is not set, never output.
	Error func(error)
}

type OsCreator struct {
	Root       string
	sync.Mutex // used to limit the number of concurent open file.
}