0001    //
0002    //  AskSettings.swift
0003    //  AskSettings
0004    //
0005    //  Created by Omar Abdelhafith on 03/11/2015.
0006    //  Copyright © 2015 Omar Abdelhafith. All rights reserved.
0007    //
0008    
0009    
0010    /// Settings used to costumize the behaviour of ask()
0011    public class AskSettings
Ask.swift:18
public func ask(prompt: String, customizationBlock: (AskSettings<String> -> Void)? = nil) -> String {
Ask.swift:33
public func ask<T: ArgConvertibleType>(prompt: String, type: T.Type, customizationBlock: (AskSettings<T> -> Void)? = nil) -> T {
Ask.swift:71
func getSettings<T>(callback: (AskSettings<T> -> Void)?) -> AskSettings<T> {
Ask.swift:71
func getSettings<T>(callback: (AskSettings<T> -> Void)?) -> AskSettings<T> {
Ask.swift:72
    let settings = AskSettings<T>()
AskSettings.swift:46
extension AskSettings: AskerValidator {<T
AskSettings.swift:14
    public var defaultValue: T?
AskSettings.swift:20
    var invalidClousures: [(T -> Bool, String)] = []
AskSettings.swift:30
    public func addInvalidCase(description: String, invalidIfTrue: (T -> Bool)) {
AskSettings.swift:34
    func preparedItem(originalString string: String) -> T {
AskSettings.swift:39
        return T.fromString(string)!: ArgConvertibleType> {
0012        
0013        /// Default value to set incase the user entered a blank
0014        public var defaultValue
AskSettings.swift:35
        if string.isEmpty && defaultValue != nil {
AskSettings.swift:36
            return defaultValue!: T?
0015        
0016        /// If set to true, another message will follow successful user entry asking the user to confirm
0017        /// his selection
0018        public var confirm
Ask.swift:39
    if settings.confirm { = false
0019        
0020        var invalidClousures
AskSettings.swift:31
        invalidClousures.append(invalidIfTrue, description)
AskSettings.swift:74
        for (isInvalid, validationError) in invalidClousures {: [(T -> Bool, String)] = []
0021        
0022        
0023        /**
0024         Add an invalid entry case
0025         
0026         - parameter description:   The string to be printed to the stdout if the case is invalid
0027         - parameter invalidIfTrue: If true is returned, then the user input was invalid, if false, the 
0028                                    user input was valid.
0029         */
0030        public func addInvalidCase(description: String, invalidIfTrue: (T -> Bool)) {
0031            invalidClousures.append(invalidIfTrue, description)
0032        }
0033        
0034        func preparedItem(originalString string: String) -> T {
0035            if string.isEmpty && defaultValue != nil {
0036                return defaultValue!
0037            }
0038            
0039            return T.fromString(string)!
0040        }
0041    }
0042    
0043    
0044    // MARK:- Internal extension
0045    
0046    extension AskSettings: AskerValidator {
0047        
0048        func invalidItemMessage(string: String?) -> String? {
0049            guard let string = string else {
0050                return "You provided an empty message, pelase enter anything!"
0051            }
0052            
0053            guard let validatedItem = T.fromString(string) else {
0054                return "You must enter a valid \(T.typeName())."
0055            }
0056            
0057            guard let validationError = firstValidationError(validatedItem) else {
0058                return nil
0059            }
0060            
0061            return validationError
0062        }
0063        
0064        func newItemPromptMessage() -> String {
0065            return "?  "
0066        }
0067        
0068        func validatedItem(forString string: String) -> T {
0069            return T.fromString(string)!
0070        }
0071        
0072        func firstValidationError
AskSettings.swift:57
        guard let validationError = firstValidationError(validatedItem) else {(item: T) -> String? {
0073            
0074            for (isInvalid, validationError) in invalidClousures {
0075                if isInvalid(item) {
0076                    return validationError
0077                }
0078            }
0079            
0080            return nil
0081        }
0082    }