nip19.

nip19/utils.go

@@ -1,17 +1,28 @@
 package nip19
 
 import (
-	"encoding/hex"
-	"strings"
+	"bytes"
 )
 
-// TranslatePublicKey turns a hex or bech32 public key into always hex
-func TranslatePublicKey(bech32orHexKey string) string {
-	if strings.HasPrefix(bech32orHexKey, "npub1") {
-		data, _, _ := Decode(bech32orHexKey)
-		return hex.EncodeToString(data)
+const (
+	TLVDefault uint8 = 0
+	TLVRelay   uint8 = 1
+)
+
+func readTLVEntry(data []byte) (typ uint8, value []byte) {
+	if len(data) < 2 {
+		return 0, nil
 	}
 
-	// just return what we got
-	return bech32orHexKey
+	typ = data[0]
+	length := int(data[1])
+	value = data[2 : 2+length]
+	return
+}
+
+func writeTLVEntry(buf *bytes.Buffer, typ uint8, value []byte) {
+	length := len(value)
+	buf.WriteByte(typ)
+	buf.WriteByte(uint8(length))
+	buf.Write(value)
 }