add a mime/multipart.Writer #1823
Description
We need the mime/multipart Writer half.
something like....
package multipart
// Writer creates new multipart messages.
type Writer struct {
Boundary string
w io.Writer
}
// NewWriter returns a new Writer with a random boundary.
func NewWriter(w io.Writer) *Writer {
...
}
func (w *Writer) Write(p *Part) os.Error {
...
}
func (w *Writer) Close() os.Error {
}
func NewPart(header textproto.MIMEHeader, body io.Reader) *Part {
}
// NewFilePart is a convenience wrapper around NewPart.
func NewFilePart(formName, fileName string, body io.Reader) *Part {