stream/mts/meta/meta.go: updated meta.NewWith so that it just uses meta.New, and now ti can add an abitrary number of things to the map. It also overwrites keys that have been repeated

stream/mts/meta/meta.go

@@ -76,18 +76,18 @@ func New() *Data {
 	}
 }
 
-func NewWith(key, data string) *Data {
-	meta := &Data{
-		data: make(map[string]string),
-		enc: []byte{
-			0x00,                   // Reserved byte
-			(majVer << 4) | minVer, // MS and LS versions
-			0x00,                   // Data len byte1
-			0x00,                   // Data len byte2
-		},
+// NewWith creates a meta.Data and fills map with initial data given. If there
+// is repeated key, then the latter overwrites the prior.
+func NewWith(data [][2]string) *Data {
+	m := New()
+	m.order = make([]string, 0, len(data))
+	for _, d := range data {
+		if _, exists := m.data[d[0]]; !exists {
+			m.order = append(m.order, d[0])
 		}
-	meta.Add(key, data)
-	return meta
+		m.data[d[0]] = d[1]
+	}
+	return m
 }
 
 // Add adds metadata with key and val.