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header.go
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/
header.go
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package mail
import (
"net/mail"
"time"
"github.com/emersion/go-message"
"github.com/emersion/go-message/charset"
)
const dateLayout = "Mon, 02 Jan 2006 15:04:05 -0700"
// A Header is a mail header.
type Header struct {
message.Header
}
// NewHeader creates a new mail header.
func NewHeader() Header {
return Header{make(message.Header)}
}
// AddressList parses the named header field as a list of addresses. If the
// header is missing, it returns nil.
func (h Header) AddressList(key string) ([]*Address, error) {
v := h.Get(key)
if v == "" {
return nil, nil
}
return parseAddressList(v)
}
// SetAddressList formats the named header to the provided list of addresses.
func (h Header) SetAddressList(key string, addrs []*Address) {
h.Set(key, formatAddressList(addrs))
}
// Date parses the Date header field.
func (h Header) Date() (time.Time, error) {
return mail.Header(h.Header).Date()
}
// SetDate formats the Date header field.
func (h Header) SetDate(t time.Time) {
h.Set("Date", t.Format(dateLayout))
}
// Subject parses the Subject header field. If there is an error, the raw field
// value is returned alongside the error.
func (h Header) Subject() (string, error) {
return charset.DecodeHeader(h.Get("Subject"))
}
// SetSubject formats the Subject header field.
func (h Header) SetSubject(s string) {
h.Set("Subject", charset.EncodeHeader(s))
}