Finish the prop set feature.

code/tool/webdav/webdav.go

@@ -593,7 +593,7 @@ func (h *Handler) handleProppatch(w http.ResponseWriter, r *http.Request) (statu
 		}
 		return http.StatusMethodNotAllowed, err
 	}
-	patches, status, err := readProppatch(r.Body)
+	patches, status, err := ReadProppatch(r.Body)
 	if err != nil {
 		return status, err
 	}

code/tool/webdav/xml.go

@@ -493,7 +493,7 @@ type propertyupdate struct {
 	SetRemove []setRemove `xml:",any"`
 }
 
-func readProppatch(r io.Reader) (patches []Proppatch, status int, err error) {
+func ReadProppatch(r io.Reader) (patches []Proppatch, status int, err error) {
 	var pu propertyupdate
 	if err = ixml.NewDecoder(r).Decode(&pu); err != nil {
 		return nil, http.StatusBadRequest, err

code/tool/webdav/xml_test.go

@@ -705,7 +705,7 @@ func TestReadProppatch(t *testing.T) {
 	}}
 
 	for _, tc := range testCases {
-		pp, status, err := readProppatch(strings.NewReader(tc.input))
+		pp, status, err := ReadProppatch(strings.NewReader(tc.input))
 		if tc.wantStatus != 0 {
 			if err == nil {
 				t.Errorf("%s: got nil error, want non-nil", tc.desc)