PunycodeSwift

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PunycodeSwift is a pure Swift library to allows you to encode and decode punycoded strings

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# PunycodeSwift

<code>PunycodeSwift</code> is a pure Swift library to allows you to encode and decode `punycoded` strings by using String extension.

## What is Punycode?

Punycode is a representation of Unicode with the limited ASCII character subset used for Internet host names. Using Punycode, host names containing Unicode characters are transcoded to a subset of ASCII consisting of letters, digits, and hyphen, which is called the Letter-Digit-Hyphen (LDH) subset. For example, München (German name for Munich) is encoded as Mnchen-3ya. [(Wikipedia)](https://en.wikipedia.org/wiki/Punycode)

## Requirements
- macOS 10.13 or later
- iOS 12.0 or later
- tvOS 12.0 or later
- watchOS 4.0 or later
- visionOS 1.0 or later
- Swift 5.0 or later

## Installation

### Swift Package Manager

Add the following to your `Package.swift` file.

- macOS, iOS, tvOS, watchOS, visionOS, and Swift 5
    ```swift
    dependencies: [
        .package(url: "https://github.com/futamura/PunycodeSwift.git", .upToNextMajor(from: "3.0.0"))
    ]
    ```

- macOS, iOS, tvOS, and Swift 5
    ```swift
    dependencies: [
        .package(url: "https://github.com/futamura/PunycodeSwift.git", .upToNextMajor(from: "2.1.1"))
    ]
    ```

### Carthage

Add the following to your `Cartfile` and follow [these instructions](https://github.com/Carthage/Carthage#adding-frameworks-to-an-application).

- macOS, iOS, tvOS, watchOS, visionOS, and Swift 5

```
    github "futamura/PunycodeSwift" ~> 3.0
    ```

- macOS, iOS, tvOS, and Swift 5

```
    github "futamura/PunycodeSwift" ~> 2.0
    ```

- macOS, iOS, tvOS, and Swift 4

```
    github "futamura/PunycodeSwift" ~> 1.0
    ```

### CocoaPods

To integrate TLDExtract into your project, add the following to your `Podfile`.

- macOS, iOS, tvOS, watchOS, visionOS, and Swift 5.0

```ruby
    pod 'Punycode', '~> 3.0'
    ```

- macOS, iOS, tvOS, and Swift 5.0

```ruby
    pod 'Punycode', '~> 2.0'
    ```

- macOS, iOS, tvOS, and Swift 4.2

```ruby
    pod 'Punycode', '~> 1.0'
    ```

## Usage

Full documentation is available at [https://futamura.github.io/PunycodeSwift/swiftdoc/](https://futamura.github.io/PunycodeSwift/swiftdoc/).

### Encode and decode IDNA:

```swift
import Punycode

var sushi: String = "寿司"

sushi = sushi.idnaEncoded!
print(sushi)  // xn--sprr0q

sushi = sushi.idnaDecoded!
print(sushi)  // "寿司"
```

### Encode and decode Punycode directly:

```swift
import Punycode

var sushi: String = "寿司"

sushi = sushi.punycodeEncoded!
print(sushi)  // sprr0q

sushi = sushi.punycodeDecoded!
print(sushi)  // "寿司"
```

## Copyright

Punycode is released under MIT license, which means you can modify it, redistribute it or use it however you like.

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