98 lines
1.7 KiB
Go
98 lines
1.7 KiB
Go
// Package toml provides a toml codec
|
|
package toml
|
|
|
|
import (
|
|
"bytes"
|
|
"io"
|
|
|
|
"github.com/BurntSushi/toml"
|
|
"github.com/unistack-org/micro/v3/codec"
|
|
rutil "github.com/unistack-org/micro/v3/util/reflect"
|
|
)
|
|
|
|
type tomlCodec struct{}
|
|
|
|
const (
|
|
flattenTag = "flatten"
|
|
)
|
|
|
|
func (c *tomlCodec) Marshal(v interface{}) ([]byte, error) {
|
|
switch m := v.(type) {
|
|
case nil:
|
|
return nil, nil
|
|
case *codec.Frame:
|
|
return m.Data, nil
|
|
}
|
|
|
|
buf := bytes.NewBuffer(nil)
|
|
defer buf.Reset()
|
|
|
|
if nv, nerr := rutil.StructFieldByTag(v, codec.DefaultTagName, flattenTag); nerr == nil {
|
|
v = nv
|
|
}
|
|
|
|
err := toml.NewEncoder(buf).Encode(v)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return buf.Bytes(), nil
|
|
}
|
|
|
|
func (c *tomlCodec) Unmarshal(b []byte, v interface{}) error {
|
|
if len(b) == 0 || v == nil {
|
|
return nil
|
|
}
|
|
|
|
if m, ok := v.(*codec.Frame); ok {
|
|
m.Data = b
|
|
return nil
|
|
}
|
|
|
|
if nv, nerr := rutil.StructFieldByTag(v, codec.DefaultTagName, flattenTag); nerr == nil {
|
|
v = nv
|
|
}
|
|
|
|
return toml.Unmarshal(b, v)
|
|
}
|
|
|
|
func (c *tomlCodec) ReadHeader(conn io.Reader, m *codec.Message, t codec.MessageType) error {
|
|
return nil
|
|
}
|
|
|
|
func (c *tomlCodec) ReadBody(conn io.Reader, v interface{}) error {
|
|
if v == nil {
|
|
return nil
|
|
}
|
|
|
|
buf, err := io.ReadAll(conn)
|
|
if err != nil {
|
|
return err
|
|
} else if len(buf) == 0 {
|
|
return nil
|
|
}
|
|
return c.Unmarshal(buf, v)
|
|
}
|
|
|
|
func (c *tomlCodec) Write(conn io.Writer, m *codec.Message, v interface{}) error {
|
|
if v == nil {
|
|
return nil
|
|
}
|
|
buf, err := c.Marshal(v)
|
|
if err != nil {
|
|
return err
|
|
} else if len(buf) == 0 {
|
|
return codec.ErrInvalidMessage
|
|
}
|
|
|
|
_, err = conn.Write(buf)
|
|
return err
|
|
}
|
|
|
|
func (c *tomlCodec) String() string {
|
|
return "toml"
|
|
}
|
|
|
|
func NewCodec() codec.Codec {
|
|
return &tomlCodec{}
|
|
}
|