Function parseHeaderMail

pkg/gitdiff/patch_header.go:357–400

(mailLine string, r io.Reader, opts patchHeaderOptions)

}

func parseHeaderMail(mailLine string, r io.Reader, opts patchHeaderOptions) (*PatchHeader, error) {
	msg, err := mail.ReadMessage(r)
	if err != nil {
		return nil, err
	}

	h := &PatchHeader{}

	if strings.HasPrefix(mailLine, mailHeaderPrefix) {
		mailLine = strings.TrimPrefix(mailLine, mailHeaderPrefix)
		if i := strings.IndexByte(mailLine, ' '); i > 0 {
			h.SHA = mailLine[:i]
		}
	}

	from := msg.Header.Get("From")
	if from != "" {
		u, err := ParsePatchIdentity(from)
		if err != nil {
			return nil, err
		}
		h.Author = &u
	}

	date := msg.Header.Get("Date")
	if date != "" {
		d, err := ParsePatchDate(date)
		if err != nil {
			return nil, err
		}
		h.AuthorDate = d
	}

	subject := msg.Header.Get("Subject")
	h.SubjectPrefix, h.Title = cleanSubject(subject, opts.subjectCleanMode)

	s := bufio.NewScanner(msg.Body)
	h.Body, h.BodyAppendix = scanMessageBody(s, "", true)
	if s.Err() != nil {
		return nil, s.Err()
	}

	return h, nil
}

func cleanSubject(s string, mode SubjectCleanMode) (prefix string, subject string) {
	switch mode {