Method Read

tools/copycallback.go:36–47

Read wraps the underlying Reader's "Read" method. It also captures the number of bytes read, and calls the callback.

(p []byte)

// Read wraps the underlying Reader's "Read" method. It also captures the number
// of bytes read, and calls the callback.
func (r *BodyWithCallback) Read(p []byte) (int, error) {
	n, err := r.ReadSeekCloser.Read(p)

	if n > 0 {
		r.readSize += int64(n)

		if (err == nil || err == io.EOF) && r.c != nil {
			err = r.c(r.totalSize, r.readSize, n)
		}
	}
	return n, err
}

// Seek wraps the underlying Seeker's "Seek" method, updating the number of
// bytes that have been consumed by this reader.