Replace NEKit dependency with reduced subset

GlassVPN/zhuhaow-NEKit/Utils/HTTPURL.swift

@@ -0,0 +1,57 @@
+import Foundation
+
+public class HTTPURL {
+    public let scheme: String?
+    public let host: String?
+    public let port: Int?
+    //    public let path: String
+    public let relativePath: String
+
+    // swiftlint:disable:next force_try
+    static let urlreg = try! NSRegularExpression(pattern: "^(?:(?:(https?):\\/\\/)?([\\w\\.-]+)(?::(\\d+))?)?(?:\\/(.*))?$", options: NSRegularExpression.Options.caseInsensitive)
+
+    init?(string url: String) {
+        let nsurl = url as NSString
+
+        guard let result = HTTPURL.urlreg.firstMatch(in: url, range: NSRange(location: 0, length: nsurl.length)) else {
+            return nil
+        }
+
+        guard result.numberOfRanges == 5 else {
+            return nil
+        }
+
+        guard result.range(at: 0).location != NSNotFound else {
+            return nil
+        }
+
+        var range = result.range(at: 1)
+        if range.location != NSNotFound {
+            scheme = nsurl.substring(with: range)
+        } else {
+            scheme = nil
+        }
+
+        range = result.range(at: 2)
+        if range.location != NSNotFound {
+            host = nsurl.substring(with: range)
+        } else {
+            host = nil
+        }
+
+        range = result.range(at: 3)
+        if range.location != NSNotFound {
+            port = Int(nsurl.substring(with: range))
+        } else {
+            port = nil
+        }
+
+        range = result.range(at: 4)
+        if range.location != NSNotFound {
+            relativePath = nsurl.substring(with: range)
+        } else {
+            relativePath = ""
+        }
+
+    }
+}