Merge pull request #108 from wneessen/feature/107_provide-more-ways-for-middleware-to-interact-with-mail-parts

Introducing Msg part deletion
This commit is contained in:
Winni Neessen 2023-01-28 14:49:08 +01:00 committed by GitHub
commit 3c0f5d03d8
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4 changed files with 33 additions and 2 deletions

8
msg.go
View file

@ -989,7 +989,13 @@ func (m *Msg) encodeString(s string) string {
// hasAlt returns true if the Msg has more than one part
func (m *Msg) hasAlt() bool {
return len(m.parts) > 1
c := 0
for _, p := range m.parts {
if !p.del {
c++
}
}
return c > 1
}
// hasMixed returns true if the Msg has mixed parts

View file

@ -102,7 +102,9 @@ func (mw *msgWriter) writeMsg(m *Msg) {
}
for _, p := range m.parts {
mw.writePart(p, m.charset)
if !p.del {
mw.writePart(p, m.charset)
}
}
if m.hasAlt() {
mw.stopMP()

View file

@ -16,6 +16,7 @@ type PartOption func(*Part)
type Part struct {
ctype ContentType
enc Encoding
del bool
w func(io.Writer) (int64, error)
}
@ -64,6 +65,12 @@ func (p *Part) SetWriteFunc(w func(io.Writer) (int64, error)) {
p.w = w
}
// Delete removes the current part from the parts list of the Msg by setting the
// del flag to true. The msgWriter will skip it then
func (p *Part) Delete() {
p.del = true
}
// WithPartEncoding overrides the default Part encoding
func WithPartEncoding(e Encoding) PartOption {
return func(p *Part) {

View file

@ -241,6 +241,22 @@ func TestPart_SetContent(t *testing.T) {
}
}
// TestPart_Delete tests Part.Delete
func TestPart_Delete(t *testing.T) {
c := "This is a test with ümläutß"
m := NewMsg()
m.SetBodyString(TypeTextPlain, c)
pl, err := getPartList(m)
if err != nil {
t.Errorf("failed: %s", err)
return
}
pl[0].Delete()
if !pl[0].del {
t.Errorf("Delete failed. Expected: %t, got: %t", true, pl[0].del)
}
}
// getPartList is a helper function
func getPartList(m *Msg) ([]*Part, error) {
pl := m.GetParts()