JSONtoCodable is a generating tool from Raw JSON to Codable (Swift4) text written in Swift4.

Qiita: JSONからCodable化されたstructを自動生成するツールを作った話 - Qiita

TL;DR

From JSON,

{
    "user": {
        "Name": "Yuto Mizutani"
    },
    "lib": {
        "lib-name": "JSONtoCodable",
        "year": 2018,
        "version": "1.0.2",
        "released": "2018-09-22"
    },
    "text": "Hello, world!!"
}

to Codable.

public struct Result: Codable {
    public let user: User
    public let lib: Lib
    public let text: String

    public struct User: Codable {
        public let name: String

        private enum CodingKeys: String, CodingKey {
            case name = "Name"
        }
    }

    public struct Lib: Codable {
        public let libName: String
        public let year: Int
        public let version: String
        public let released: String

        private enum CodingKeys: String, CodingKey {
            case libName = "lib-name"
            case year
            case version
            case released
        }
    }
}

JaCo (macOS App)

jc (CLI App)

Installation

$ brew tap YutoMizutani/jc
$ brew install jc

Usage example

$ curl https://httpbin.org/get | jc

or generate .swift file,

$ curl https://httpbin.org/get | jc > Result.swift

Help command

$ jc -h

Screen shot

Support formats

• Type
  • String
  • Bool
  • Int
  • Double
  • struct(s)
  • Optional
• Array
  • Start array
  • Muptiple array
  • Arrayed objects
  • Optional array
• Number of nested array and objects
  • Infinity
• Number of spaces in entered JSON
  • 0 to infinity

Translations

JSON Value	Swift Type
“text”	String
true	Bool
-10	Int
1.0	Double
null	<Foo>?
(the others)	Any

Usage

import JSONtoCodable

let json: String = """
{
    "Hello": "Hello, world!!"
}
"""

let jsonToCodable = JSONtoCodable()
let codable = try? jsonToCodable.generate(json)

print(codable)
/*
struct Result: Codable {
    let hello: String

    private enum CodingKeys: String, CodingKey {
        case hello = "Hello"
    }
}
*/

Config

let config = Config()
config.name = "Result" // struct Result: Codable {}
config.accessModifier = AccessModifier.public // public struct
config.caseType = (variable: CaseType.camel, struct: CaseType.pascal)
config.lineType = LineType.lineFeed
config.indentType = IndentType.space(4)

See more: Config.swift

Installation

Cocoapods

Add this to your Podfile:

pod 'JSONtoCodable'

and

$ pod install

Carthage

Add this to your Cartfile:

github "YutoMizutani/JSONtoCodable"

and

$ carthage update

License

JSONtoCodable is available under the MIT license.