jwalk

README

jwalk

Jwalk is built on top of easyjson/jlexer, and allows to easily unmarshal any JSON input with arbitrary key names by walking through it.

Usage

package main

import (
	"fmt"
	"log"

	"github.com/romanyx/jwalk"
)

const input = `{
	"key1": [{
		"id": 1
	}, {
		"id": 2
	}],
	"key2": [1,2],
	"key3": {
		"id": 1,
		"name": null
	}
}`

func main() {
	i, err := jwalk.Parse([]byte(input))
	if err != nil {
		log.Fatal(err)
	}

	switch v := i.(type) {
	case jwalk.ObjectWalker:
		v.Walk(func(key string, value interface{}) error {
			fmt.Println(key + ":")
			switch v := value.(type) {
			case jwalk.ObjectsWalker:
				v.Walk(func(obj jwalk.ObjectWalker) error {
					fmt.Println("\t-")
					obj.Walk(func(key string, value interface{}) error {
						if v, ok := value.(jwalk.Value); ok {
							fmt.Println("\t", key+":", v.Interface())
						}
						return nil
					})
					return nil
				})
			case jwalk.Value:
				fmt.Println("\t", v.Interface())
			case jwalk.ObjectWalker:
				v.Walk(func(key string, value interface{}) error {
					if v, ok := value.(jwalk.Value); ok {
						fmt.Println("\t", key+":", v.Interface())
					}
					return nil
				})
			}
			return nil
		})
	}
}

Testing

go test

Contributing

Please feel free to submit issues, fork the repository and send pull requests!

Documentation

Overview

Code generated by go run make_value.go. DO NOT EDIT.

Index

• func Parse(data []byte) (interface{}, error)
• type ObjectWalker
• type ObjectsWalker
• type Value

Functions

func Parse

func Parse(data []byte) (interface{}, error)

Parse parses the json data.

Types

type ObjectWalker

type ObjectWalker interface {
	Walk(func(name string, value interface{}) error) error
	json.Marshaler
}

ObjectWalker iterates through JSON object fields.

type ObjectsWalker

type ObjectsWalker interface {
	Walk(func(obj ObjectWalker) error) error
	json.Marshaler
}

ObjectsWalker iterates through array of JSON objects.

type Value

type Value interface {
	Bytes() []byte
	String() string
	Int8() int8
	Int16() int16
	Int32() int32
	Int64() int64
	Int() int
	Uint() uint
	Uint8() uint8
	Uint16() uint16
	Uint32() uint32
	Uint64() uint64
	Float32() float32
	Float64() float64
	Interface() interface{}
}