PercentEncoder is a lightweight library to escape string using so called URL encoding in Swift.

PercentEncoder uses JavaScriptCore framework for URL-encoding although URL-encoding is executed with CFURLCreateStringByAddingPercentEscapes() or NSString.stringByAddingPercentEncodingWithAllowedCharacters() in most cases.
The followings is the reason and has motivated me to make this library.

• CFURLCreateStringByAddingPercentEscapes() deprecated in iOS9
• NSString.stringByAddingPercentEncodingWithAllowedCharacters() is introduced from iOS 7. However it won't work in multi-byte languages like Japanes, Chinese, etc and an app crashes as shown at the issue in Alamorefire.

PercentEncoder offers PercentEncoding enum and String extension methos for URL-encoding.

PercentEncoding has four values which are equivalent to Javscript functions(encodeURI, encodeURIComponent, decodeURI, decodeURIComponent).

let url = "http://tasanobu.jp?city=東京&year='20"

/// EncodeURI
let escaped = PercentEncoding.EncodeURI.evaluate(string: url)
// encoded to "http://tasanobu.jp?city=%E6%9D%B1%E4%BA%AC&year='20"

/// DecodeURI
PercentEncoding.DecodeURIComponent.evaluate(string: escaped)
// decoded back to "http://tasanobu.jp?city=東京&year='20"


let value = "東京" // 東京 means Tokyo which is the capital of Japan.

/// EncodeURI
let encoded = PercentEncoding.EncodeURIComponent.evaluate(string: value)
// encoded to "%E6%9D%B1%E4%BA%AC"

/// DecodeURI
PercentEncoding.DecodeURIComponent.evaluate(string: encoded)
// decoded back to "東京"

PercentEncoding offers String extension methods which are equivalent to Javscript functions(encodeURI, encodeURIComponent, decodeURI, decodeURIComponent).

/// encodeURI
"http://tasanobu.jp?city=東京&year='20".ped_encodeURI()

/// decodeURI
"http://tasanobu.jp?city=%E6%9D%B1%E4%BA%AC&year='20".ped_decodeURI()


/// encodeURIComponent
let encoded = "東京".ped_encodeURIComponent()
// encoded to "%E6%9D%B1%E4%BA%AC"

/// decodeURIComponent
encoded.ped_decodedURIComponent()
// decoded back to "東京"

• Swift 4.0
• Xcode 9.0
• iOS 8.0+

• Install with Cocoapods

  platform :ios, '8.0'
  use_frameworks!
  
  pod 'PercentEncoder'

• Git submodule

See https://github.com/tasanobu/PercentEncoder/releases

PercentEncoder is released under the MIT license. See LICENSE for details.