Swift Validators 🔶

String validation for iOS.

Contents

• Installation
• Walkthrough
• Usage
• Available validators
• License

ReactiveSwift + SwiftValidators

Want to use SwiftValidators with ReactiveSwift? SwiftValidatorsReactiveExtensions provides a set of extensions that play well with ValidatingProperty.

Installation

SwiftValidators is available on CocoaPods for iOS 9.0+, Xcode 8 and Swift 3.0

use_frameworks!

target 'MyProject' do
...
pod 'SwiftValidators'
...
end

It is also available through SPM:

import PackageDescription

let package = Package(
name: "MyProject",
targets: [],
dependencies: [
.Package(url: "https://github.com/gkaimakas/SwiftValidators.git",
majorVersion: 6)
]
)

Walkthrough

Usage

Validation is done using the apply function of a Validator. You can create a Validator manually or you can use on of the already available via static functions in the Validator class.

A Validator's apply function accepts an input as a nullable value that conforms to the StringConvertible protocol. By default String, NSString, Int, Float, Double and Bool conform to StringConvertible.

You can specify the Validator's behaviour when it's input is nil if you are using the static Validator function by setting the nilResponse parameter to either true or false. By default nilResponse is set to false.

Validator.exactLength(3).apply("abc") //returns true

Validator.exactLength(3).apply(true) //returns false (the string representation of true is 'true')

Validator.exactLength(3).apply(nil) //returns false since `nilResponse` is set to false by default

Valuidator.exactLength(3, nilResponse: true).apply(nil) //returns true since we set nilResponse to true

For more examples on how to call each validator you can look at the unit tests.

Logical Operators

You can combine operators using the logical AND, logical OR and Logical NOT operators ( &&, || and ! respectively).

let combinedANDValidator = Validator.required() && Validator.isTrue()

The combinedANDValidator will be true only when the value is not empty and "true"

let combinedORValidator = Validator.isTrue() || Validators.isFalse()

The combinedORValidator will be true if the value is "true" or "false", otherwise it will be false.

let reversedValidator = !Validator.isTrue()

The reversedValidator will be false when the value equals "true" and true for all other values.

Available Validators

*FQDNOptions is a class that is used on isFQDN for configuration purposes. It can be instantiated like this:

FQDNOptions(requireTLD: Bool, allowUnderscores: Bool, allowTrailingDot: Bool)

License MIT

Copyright (c) George Kaimakas [email protected]

Permission is hereby granted, free of charge, to any person obtaining 
acopy of this software and associated documentation files (the 
"Software"), to deal in the Software without restriction, including 
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to 
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be 
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.