示例#1
0
// IsAttachment returns true, if the given header defines an attachment.
// First it checks, if the Content-Disposition header defines an attachement.
// If this test is false, the Content-Type header is checked.
//
// Valid Attachment-Headers:
//
//    Content-Disposition: attachment; filename="frog.jpg"
//    Content-Type: attachment; filename="frog.jpg"
//
func IsAttachment(header mail.Header) bool {
	mediatype, _, _ := mime.ParseMediaType(header.Get("Content-Disposition"))
	if strings.ToLower(mediatype) == "attachment" {
		return true
	}

	mediatype, _, _ = mime.ParseMediaType(header.Get("Content-Type"))
	if strings.ToLower(mediatype) == "attachment" {
		return true
	}

	return false
}
示例#2
0
// IsPlain returns true, if the the mime headers define a valid
// 'text/plain' or 'text/html part'. Ff emptyContentTypeIsPlain is set
// to true, a missing Content-Type header will result in a positive
// plain part detection.
func IsPlain(header mail.Header, emptyContentTypeIsPlain bool) bool {
	ctype := header.Get("Content-Type")
	if ctype == "" && emptyContentTypeIsPlain {
		return true
	}

	mediatype, _, err := mime.ParseMediaType(ctype)
	if err != nil {
		return false
	}
	switch mediatype {
	case "text/plain",
		"text/html":
		return true
	}

	return false

}