Auto decapitalize & snakecase json tools with high-performance 100% compatible drop-in replacement of "encoding/json"

New features:

1. Decapitalize for each field of struct.
2. Snakecase for each field of struct.

New features: Decapitalize & Snakecase

type Struct struct {
	Field    string
	FieldAge int
	MyAddr   string `json:"Addr"`
	IPAddr   string 
    ABC string
}
func Test_Capitalize(t *testing.T) {
	s := Struct{Field: "field", FieldAge: 10, MyAddr: "earth"}
	json := jsoniter.Decapitalized
	bs, err := json.Marshal(s)
	require.Nil(t, err)
    fmt.Println(bs ,err)
	var s1 Struct
	jsoniter.Unmarshal(bs, &s1)
	require.Equal(t, s1.Field, s.Field)
	require.Equal(t, s1.MyAddr, s.MyAddr)
	fmt.Println(string(bs))
    //output: {"field":"field","fieldAge":10,"Addr":"earth" , "ipAddr":"", "abc":""}
}
func Test_Snake(t *testing.T) {
	s := Struct{Field: "field", FieldAge: 10, MyAddr: "earth"}
	json := jsoniter.SnakeCase
	bs, err := json.Marshal(s)
	require.Nil(t, err)
	require.Equal(t, true, true)
	var s1 Struct
	json.Unmarshal(bs, &s1)
	require.Equal(t, s1.Field, s.Field)
	require.Equal(t, s1.MyAddr, s.MyAddr)
	fmt.Println(string(bs))
    //output: {"field":"field","field_age":10,"Addr":"earth", "ip_addr":"", "abc":""}
}

Benchmark

Source code: https://github.com/daqiancode/jsoniter-benchmark/blob/master/src/github.com/daqiancode/jsoniter-benchmark/benchmark_medium_payload_test.go

Raw Result (easyjson requires static code generation)

	ns/op	allocation bytes	allocation times
std decode	35510 ns/op	1960 B/op	99 allocs/op
easyjson decode	8499 ns/op	160 B/op	4 allocs/op
jsoniter decode	5623 ns/op	160 B/op	3 allocs/op
std encode	2213 ns/op	712 B/op	5 allocs/op
easyjson encode	883 ns/op	576 B/op	3 allocs/op
jsoniter encode	837 ns/op	384 B/op	4 allocs/op

Always benchmark with your own workload. The result depends heavily on the data input.

Usage

100% compatibility with standard lib

Replace

import "encoding/json"
json.Marshal(&data)

with

import "github.com/daqiancode/jsoniter"

var json = jsoniter.ConfigCompatibleWithStandardLibrary
json.Marshal(&data)

Replace

import "encoding/json"
json.Unmarshal(input, &data)

with

import "github.com/daqiancode/jsoniter"

var json = jsoniter.ConfigCompatibleWithStandardLibrary
json.Unmarshal(input, &data)

More documentation

How to get

go get github.com/daqiancode/jsoniter

Contribution Welcomed !

Contributors

• thockin
• mattn
• cch123
• Oleg Shaldybin
• Jason Toffaletti

Report issue or pull request, or email taowen@gmail.com, or