initial commit

pkg/core/encoding.go

@@ -0,0 +1,56 @@
+// Copyright (C) 2023 Marius Schellenberger
+
+package core
+
+import (
+	"encoding/base32"
+	"encoding/base64"
+	"encoding/hex"
+)
+
+var b32raw = base32.StdEncoding.WithPadding(base32.NoPadding)
+
+type Encoding int
+
+func (e Encoding) String() string {
+	switch e {
+	case Base32:
+		return "base32"
+	case Base64:
+		return "base64"
+	case Base64URL:
+		return "base64url"
+	}
+	return "hex"
+}
+
+func (e Encoding) EncodeToString(src []byte) string {
+	switch e {
+	case Base32:
+		return b32raw.EncodeToString(src)
+	case Base64:
+		return base64.RawStdEncoding.EncodeToString(src)
+	case Base64URL:
+		return base64.RawURLEncoding.EncodeToString(src)
+	}
+	return hex.EncodeToString(src)
+}
+
+func EncodingFromString(e string) Encoding {
+	switch e {
+	case "base32":
+		return Base32
+	case "base64":
+		return Base64
+	case "base64url":
+		return Base64URL
+	}
+	return Hex
+}
+
+const (
+	Hex Encoding = iota
+	Base32
+	Base64
+	Base64URL
+)