initial import

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

urlencode.go

@@ -0,0 +1,104 @@
+// Package urlencode provides a urlencode codec
+package urlencode
+
+import (
+	"io"
+	"io/ioutil"
+
+	"github.com/unistack-org/micro/v3/codec"
+	rutil "github.com/unistack-org/micro/v3/util/reflect"
+)
+
+type urlencodeCodec struct{}
+
+func (c *urlencodeCodec) Marshal(b interface{}) ([]byte, error) {
+	switch m := b.(type) {
+	case nil:
+		return nil, nil
+	case *codec.Frame:
+		return m.Data, nil
+	}
+
+	v, err := rutil.StructURLValues(b, "", []string{"protobuf", "json"})
+	if err != nil {
+		return nil, err
+	}
+
+	return []byte(v.Encode()), nil
+}
+
+func (c *urlencodeCodec) Unmarshal(b []byte, v interface{}) error {
+	if len(b) == 0 {
+		return nil
+	}
+	switch m := v.(type) {
+	case nil:
+		return nil
+	case *codec.Frame:
+		m.Data = b
+		return nil
+	}
+
+	mp, err := rutil.URLMap(string(b))
+	if err != nil {
+		return err
+	}
+
+	return rutil.Merge(v, rutil.FlattenMap(mp), rutil.Tags([]string{"protobuf", "json"}), rutil.SliceAppend(true))
+}
+
+func (c *urlencodeCodec) ReadHeader(conn io.Reader, m *codec.Message, t codec.MessageType) error {
+	return nil
+}
+
+func (c *urlencodeCodec) ReadBody(conn io.Reader, b interface{}) error {
+	switch m := b.(type) {
+	case nil:
+		return nil
+	case *codec.Frame:
+		buf, err := ioutil.ReadAll(conn)
+		if err != nil {
+			return err
+		} else if len(buf) == 0 {
+			return nil
+		}
+		m.Data = buf
+		return nil
+	}
+
+	buf, err := ioutil.ReadAll(conn)
+	if err != nil {
+		return err
+	} else if len(buf) == 0 {
+		return nil
+	}
+
+	return c.Unmarshal(buf, b)
+}
+
+func (c *urlencodeCodec) Write(conn io.Writer, m *codec.Message, b interface{}) error {
+	switch m := b.(type) {
+	case nil:
+		return nil
+	case *codec.Frame:
+		_, err := conn.Write(m.Data)
+		return err
+	}
+
+	buf, err := c.Marshal(b)
+	if err != nil {
+		return err
+	}
+
+	_, err = conn.Write(buf)
+
+	return err
+}
+
+func (c *urlencodeCodec) String() string {
+	return "json"
+}
+
+func NewCodec() codec.Codec {
+	return &urlencodeCodec{}
+}