Function NewWrapper

wrapio/limitwrap.go:30–37

NewWrapper creates a Wrapper based on ReadWriterAt rwa. L is the current length, O is the current offset, and N is offset at which we "wrap".

(rwa ReadWriterAt, L, O, N int64)

// NewWrapper creates a Wrapper based on ReadWriterAt rwa.
// L is the current length, O is the current offset, and N is offset at which we "wrap".
func NewWrapper(rwa ReadWriterAt, L, O, N int64) *Wrapper {
	return &Wrapper{
		L:   L,
		O:   O,
		N:   N,
		rwa: rwa,
	}
}

// Len returns the # of bytes in the Wrapper
func (wpr *Wrapper) Len() int64 {