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// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package json
import (
"bytes"
"encoding/json"
"io"
jsoniter "github.com/json-iterator/go"
)
// Encoder represents an encoder for json
type Encoder interface {
Encode(v interface{}) error
}
// Decoder represents a decoder for json
type Decoder interface {
Decode(v interface{}) error
}
// Interface represents an interface to handle json data
type Interface interface {
Marshal(v interface{}) ([]byte, error)
Unmarshal(data []byte, v interface{}) error
NewEncoder(writer io.Writer) Encoder
NewDecoder(reader io.Reader) Decoder
Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error
}
var (
// DefaultJSONHandler default json handler
DefaultJSONHandler Interface = JSONiter{jsoniter.ConfigCompatibleWithStandardLibrary}
_ Interface = StdJSON{}
_ Interface = JSONiter{}
)
// StdJSON implements Interface via encoding/json
type StdJSON struct{}
// Marshal implements Interface
func (StdJSON) Marshal(v interface{}) ([]byte, error) {
return json.Marshal(v)
}
// Unmarshal implements Interface
func (StdJSON) Unmarshal(data []byte, v interface{}) error {
return json.Unmarshal(data, v)
}
// NewEncoder implements Interface
func (StdJSON) NewEncoder(writer io.Writer) Encoder {
return json.NewEncoder(writer)
}
// NewDecoder implements Interface
func (StdJSON) NewDecoder(reader io.Reader) Decoder {
return json.NewDecoder(reader)
}
// Indent implements Interface
func (StdJSON) Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
return json.Indent(dst, src, prefix, indent)
}
// JSONiter implements Interface via jsoniter
type JSONiter struct {
jsoniter.API
}
// Marshal implements Interface
func (j JSONiter) Marshal(v interface{}) ([]byte, error) {
return j.API.Marshal(v)
}
// Unmarshal implements Interface
func (j JSONiter) Unmarshal(data []byte, v interface{}) error {
return j.API.Unmarshal(data, v)
}
// NewEncoder implements Interface
func (j JSONiter) NewEncoder(writer io.Writer) Encoder {
return j.API.NewEncoder(writer)
}
// NewDecoder implements Interface
func (j JSONiter) NewDecoder(reader io.Reader) Decoder {
return j.API.NewDecoder(reader)
}
// Indent implements Interface, since jsoniter don't support Indent, just use encoding/json's
func (j JSONiter) Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
return json.Indent(dst, src, prefix, indent)
}
// Marshal converts object as bytes
func Marshal(v interface{}) ([]byte, error) {
return DefaultJSONHandler.Marshal(v)
}
// Unmarshal decodes object from bytes
func Unmarshal(data []byte, v interface{}) error {
return DefaultJSONHandler.Unmarshal(data, v)
}
// NewEncoder creates an encoder to write objects to writer
func NewEncoder(writer io.Writer) Encoder {
return DefaultJSONHandler.NewEncoder(writer)
}
// NewDecoder creates a decoder to read objects from reader
func NewDecoder(reader io.Reader) Decoder {
return DefaultJSONHandler.NewDecoder(reader)
}
// Indent appends to dst an indented form of the JSON-encoded src.
func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
return DefaultJSONHandler.Indent(dst, src, prefix, indent)
}
// MarshalIndent copied from encoding/json
func MarshalIndent(v interface{}, prefix, indent string) ([]byte, error) {
b, err := Marshal(v)
if err != nil {
return nil, err
}
var buf bytes.Buffer
err = Indent(&buf, b, prefix, indent)
if err != nil {
return nil, err
}
return buf.Bytes(), nil
}
// Valid proxy to json.Valid
func Valid(data []byte) bool {
return json.Valid(data)
}
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