RuleURL.swift 2.2 KB

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  1. // RuleURL.swift
  2. // Eureka ( https://github.com/xmartlabs/Eureka )
  3. //
  4. // Copyright (c) 2016 Xmartlabs SRL ( http://xmartlabs.com )
  5. //
  6. //
  7. // Permission is hereby granted, free of charge, to any person obtaining a copy
  8. // of this software and associated documentation files (the "Software"), to deal
  9. // in the Software without restriction, including without limitation the rights
  10. // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11. // copies of the Software, and to permit persons to whom the Software is
  12. // furnished to do so, subject to the following conditions:
  13. //
  14. // The above copyright notice and this permission notice shall be included in
  15. // all copies or substantial portions of the Software.
  16. //
  17. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18. // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19. // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20. // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21. // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22. // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23. // THE SOFTWARE.
  24. import Foundation
  25. import UIKit
  26. public struct RuleURL: RuleType {
  27. public init(allowsEmpty: Bool = true, requiresProtocol: Bool = false, msg: String = "Field value must be an URL!", id: String? = nil) {
  28. validationError = ValidationError(msg: msg)
  29. self.allowsEmpty = allowsEmpty
  30. self.requiresProtocol = requiresProtocol
  31. self.id = id
  32. }
  33. public var id: String?
  34. public var allowsEmpty = true
  35. public var requiresProtocol = false
  36. public var validationError: ValidationError
  37. public func isValid(value: URL?) -> ValidationError? {
  38. if let value = value, value.absoluteString.isEmpty == false {
  39. let predicate = NSPredicate(format:"SELF MATCHES %@", RegExprPattern.URL.rawValue)
  40. guard predicate.evaluate(with: value.absoluteString) else {
  41. return validationError
  42. }
  43. return nil
  44. } else if !allowsEmpty {
  45. return validationError
  46. }
  47. return nil
  48. }
  49. }