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支持发送邮件内嵌附件

为*Email.AttachFile和Email.Attach增加了一个参数"id".
当id不为空时,设置头部信息Content-Disposition为inline,并添加Content-ID头的值为id
This commit is contained in:
TossPig 2014-10-10 14:40:07 +08:00
parent 8d20ea04b0
commit e5134873be

View File

@ -157,19 +157,19 @@ func (e *Email) Bytes() ([]byte, error) {
}
// Add attach file to the send mail
func (e *Email) AttachFile(filename string) (a *Attachment, err error) {
func (e *Email) AttachFile(filename string, id string) (a *Attachment, err error) {
f, err := os.Open(filename)
if err != nil {
return
}
ct := mime.TypeByExtension(filepath.Ext(filename))
basename := path.Base(filename)
return e.Attach(f, basename, ct)
return e.Attach(f, basename, ct, id)
}
// Attach is used to attach content from an io.Reader to the email.
// Parameters include an io.Reader, the desired filename for the attachment, and the Content-Type.
func (e *Email) Attach(r io.Reader, filename string, c string) (a *Attachment, err error) {
func (e *Email) Attach(r io.Reader, filename string, c string, id string) (a *Attachment, err error) {
var buffer bytes.Buffer
if _, err = io.Copy(&buffer, r); err != nil {
return
@ -186,7 +186,12 @@ func (e *Email) Attach(r io.Reader, filename string, c string) (a *Attachment, e
// If the Content-Type is blank, set the Content-Type to "application/octet-stream"
at.Header.Set("Content-Type", "application/octet-stream")
}
at.Header.Set("Content-Disposition", fmt.Sprintf("attachment;\r\n filename=\"%s\"", filename))
if id != "" {
at.Header.Set("Content-Disposition", fmt.Sprintf("inline;\r\n filename=\"%s\"", filename))
at.Header.Set("Content-ID", fmt.Sprintf("<%s>", id))
}else {
at.Header.Set("Content-Disposition", fmt.Sprintf("attachment;\r\n filename=\"%s\"", filename))
}
at.Header.Set("Content-Transfer-Encoding", "base64")
e.Attachments = append(e.Attachments, at)
return at, nil
@ -269,7 +274,7 @@ func qpEscape(dest []byte, c byte) {
const nums = "0123456789ABCDEF"
dest[0] = '='
dest[1] = nums[(c&0xf0)>>4]
dest[2] = nums[(c & 0xf)]
dest[2] = nums[(c&0xf)]
}
// headerToBytes enumerates the key and values in the header, and writes the results to the IO Writer