Add base

codec/binary.go

@@ -0,0 +1,47 @@
+package codec
+
+import (
+	"encoding"
+	"fmt"
+)
+
+var (
+	Binary Codec = &binaryCodec{}
+)
+
+type binaryCodec struct{}
+
+func (*binaryCodec) Name() string {
+	return "binary"
+}
+
+func (*binaryCodec) Marshal(v interface{}) ([]byte, error) {
+	// Check for native implementation.
+	if m, ok := v.(encoding.BinaryMarshaler); ok {
+		return m.MarshalBinary()
+	}
+
+	// Otherwise assume byte slice.
+	b, ok := v.([]byte)
+	if !ok {
+		return nil, fmt.Errorf("value not []byte")
+	}
+
+	return b, nil
+}
+
+func (*binaryCodec) Unmarshal(b []byte, v interface{}) error {
+	// Check for native implementation.
+	if u, ok := v.(encoding.BinaryUnmarshaler); ok {
+		return u.UnmarshalBinary(b)
+	}
+
+	// Otherwise assume byte slice.
+	bp, ok := v.(*[]byte)
+	if !ok {
+		return fmt.Errorf("value must be *[]byte")
+	}
+
+	*bp = append((*bp)[:0], b...)
+	return nil
+}