Add an abstract json layout to make it's easier to change json library (#16528)
* Add an abstract json layout to make it's easier to change json library * Fix import * Fix import sequence * Fix blank lines * Fix blank linestokarchuk/v1.17
Lunny Xiao
3 years ago
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GitHub
parent
e0f9635c06
commit
9f31f3aa8a
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// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package json |
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import ( |
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"bytes" |
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"encoding/json" |
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"io" |
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jsoniter "github.com/json-iterator/go" |
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) |
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// Encoder represents an encoder for json
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type Encoder interface { |
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Encode(v interface{}) error |
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} |
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// Decoder represents a decoder for json
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type Decoder interface { |
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Decode(v interface{}) error |
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} |
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// Interface represents an interface to handle json data
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type Interface interface { |
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Marshal(v interface{}) ([]byte, error) |
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Unmarshal(data []byte, v interface{}) error |
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NewEncoder(writer io.Writer) Encoder |
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NewDecoder(reader io.Reader) Decoder |
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Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error |
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} |
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var ( |
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// DefaultJSONHandler default json handler
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DefaultJSONHandler Interface = JSONiter{jsoniter.ConfigCompatibleWithStandardLibrary} |
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_ Interface = StdJSON{} |
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_ Interface = JSONiter{} |
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) |
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// StdJSON implements Interface via encoding/json
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type StdJSON struct{} |
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// Marshal implements Interface
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func (StdJSON) Marshal(v interface{}) ([]byte, error) { |
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return json.Marshal(v) |
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} |
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// Unmarshal implements Interface
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func (StdJSON) Unmarshal(data []byte, v interface{}) error { |
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return json.Unmarshal(data, v) |
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} |
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// NewEncoder implements Interface
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func (StdJSON) NewEncoder(writer io.Writer) Encoder { |
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return json.NewEncoder(writer) |
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} |
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// NewDecoder implements Interface
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func (StdJSON) NewDecoder(reader io.Reader) Decoder { |
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return json.NewDecoder(reader) |
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} |
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// Indent implements Interface
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func (StdJSON) Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error { |
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return json.Indent(dst, src, prefix, indent) |
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} |
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// JSONiter implements Interface via jsoniter
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type JSONiter struct { |
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jsoniter.API |
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} |
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// Marshal implements Interface
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func (j JSONiter) Marshal(v interface{}) ([]byte, error) { |
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return j.API.Marshal(v) |
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} |
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// Unmarshal implements Interface
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func (j JSONiter) Unmarshal(data []byte, v interface{}) error { |
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return j.API.Unmarshal(data, v) |
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} |
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// NewEncoder implements Interface
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func (j JSONiter) NewEncoder(writer io.Writer) Encoder { |
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return j.API.NewEncoder(writer) |
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} |
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// NewDecoder implements Interface
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func (j JSONiter) NewDecoder(reader io.Reader) Decoder { |
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return j.API.NewDecoder(reader) |
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} |
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// Indent implements Interface, since jsoniter don't support Indent, just use encoding/json's
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func (j JSONiter) Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error { |
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return json.Indent(dst, src, prefix, indent) |
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} |
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// Marshal converts object as bytes
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func Marshal(v interface{}) ([]byte, error) { |
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return DefaultJSONHandler.Marshal(v) |
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} |
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// Unmarshal decodes object from bytes
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func Unmarshal(data []byte, v interface{}) error { |
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return DefaultJSONHandler.Unmarshal(data, v) |
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} |
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// NewEncoder creates an encoder to write objects to writer
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func NewEncoder(writer io.Writer) Encoder { |
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return DefaultJSONHandler.NewEncoder(writer) |
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} |
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// NewDecoder creates a decoder to read objects from reader
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func NewDecoder(reader io.Reader) Decoder { |
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return DefaultJSONHandler.NewDecoder(reader) |
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} |
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// Indent appends to dst an indented form of the JSON-encoded src.
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func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error { |
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return DefaultJSONHandler.Indent(dst, src, prefix, indent) |
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} |
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// MarshalIndent copied from encoding/json
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func MarshalIndent(v interface{}, prefix, indent string) ([]byte, error) { |
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b, err := Marshal(v) |
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if err != nil { |
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return nil, err |
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} |
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var buf bytes.Buffer |
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err = Indent(&buf, b, prefix, indent) |
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if err != nil { |
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return nil, err |
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} |
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return buf.Bytes(), nil |
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} |
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// Valid proxy to json.Valid
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func Valid(data []byte) bool { |
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return json.Valid(data) |
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} |
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