Method Writer

minify.go:288–300

Writer wraps a Writer interface and minifies the stream. Errors from the minifier are returned by Close on the writer. The writer must be closed explicitly.

(mediatype string, w io.Writer)

// Errors from the minifier are returned by Close on the writer.
// The writer must be closed explicitly.
func (m *M) Writer(mediatype string, w io.Writer) io.WriteCloser {
	pr, pw := io.Pipe()
	z := &writer{pw, sync.WaitGroup{}, false, nil}
	z.wg.Add(1)
	go func() {
		defer z.wg.Done()
		defer pr.Close()
		if err := m.Minify(mediatype, w, pr); err != nil {
			z.err = err
		}
	}()
	return z
}

// responseWriter wraps an http.ResponseWriter and makes sure that errors from the minifier are passed down through Close (can be blocking).
// All writes to the response writer are intercepted and minified on the fly.