The extensions for URL in Swift.

URL+Extensions.swift

import Foundation

extension URL {
  
  /// 返回不带有任何参数的 URL
  /// let anURLString = "https://127.0.0.1:8080/search/index.html?type=ios&version=1.0"
  /// let anURL = URL.init(string: anURLString)!
  /// print(anURL.bareURL)
  /// Optional(https://127.0.0.1:8080/search/index.html)
  var bareURL: URL? {
    
    var components = URLComponents.init()
    
    components.scheme = self.scheme
    
    components.host = self.host
    
    components.port = self.port
    
    components.path = self.path
    
    return components.url
  }
  
  /// 返回不带有任何参数的 URL
  /// let anURLString = "https://127.0.0.1:8080/search/index.html?type=ios&version=1.0"
  /// let anURL = URL.init(string: anURLString)!
  /// print(anURL.bareURL)
  /// Optional(https://127.0.0.1:8080/search/index.html)
  /// print(anURL.standardURL)
  /// Optional(https://127.0.0.1:8080/search/index.html?type=ios&version=1.0)
  var standardURL: URL? {
    
    guard let bareURL = self.bareURL else { return nil }
    
    guard var components = URLComponents(url: bareURL, resolvingAgainstBaseURL: true) else { return nil }
    
    components.query = self.query
    
    return components.url
  }
  
  /// 返回该 URL 所包含的参数
  /// let anURLString = "https://127.0.0.1:8080/search/index.html?type=ios&version=1.0"
  /// let anURL = URL.init(string: anURLString)!
  /// print(anURL.queryItems)
  /// ["type": "ios", "version": "1.0"]
  var queryItems: [String: Any] {
    
    var items: [String: Any] = [:]
    
    guard var components = URLComponents(url: self, resolvingAgainstBaseURL: true) else { return items }
    
    guard let queryItems = components.queryItems else { return items }
    
    queryItems.forEach { items[$0.name] = $0.value }
    
    return items
  }
}