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@dedeexe
Last active July 12, 2019 11:34
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Simples And Fast String Mask Formatter.
//
// StringMaskFormatter.swift
// StringMaskFormatter
//
// Created by dede.exe on 10/07/16.
// It's totally base on article : "http://vojtastavik.com/2015/03/29/real-time-formatting-in-uitextfield-swift-basics/"
// And I don't mind if the original author should allow me(or not) to publish it :)... But I'll keep the reference
//
import UIKit
public struct StringMaskFormatter {
public var pattern : String = ""
public var replecementChar : Character = "*"
public var allowNumbers : Bool = true
public var allowText : Bool = false
public init(pattern:String, replecementChar:Character="*", allowNumbers:Bool=true, allowText:Bool=true)
{
self.pattern = pattern
self.replecementChar = replecementChar
self.allowNumbers = allowNumbers
self.allowText = allowText
}
private func prepareString(string:String) -> String {
var charSet : NSCharacterSet!
if allowText && allowNumbers {
charSet = NSCharacterSet.alphanumericCharacterSet().invertedSet
}
else if allowText {
charSet = NSCharacterSet.letterCharacterSet().invertedSet
}
else if allowNumbers {
charSet = NSCharacterSet.decimalDigitCharacterSet().invertedSet
}
let result = string.componentsSeparatedByCharactersInSet(charSet)
return result.joinWithSeparator("")
}
public func createFormattedStringFrom(text:String) -> String
{
var resultString = ""
if text.characters.count > 0 && pattern.characters.count > 0
{
var finalText = ""
var stop = false
let tempString = prepareString(text)
var formatIndex = pattern.startIndex
var tempIndex = tempString.startIndex
while !stop
{
let formattingPatternRange = formatIndex ..< formatIndex.advancedBy(1)
if pattern.substringWithRange(formattingPatternRange) != String(replecementChar) {
finalText = finalText.stringByAppendingString(pattern.substringWithRange(formattingPatternRange))
}
else if tempString.characters.count > 0 {
let pureStringRange = tempIndex ..< tempIndex.advancedBy(1)
finalText = finalText.stringByAppendingString(tempString.substringWithRange(pureStringRange))
tempIndex = tempIndex.advancedBy(1)
}
formatIndex = formatIndex.advancedBy(1)
if formatIndex >= pattern.endIndex || tempIndex >= tempString.endIndex {
stop = true
}
resultString = finalText
}
}
return resultString
}
}
//MARK: - Pre defined formats
extension StringMaskFormatter {
static func CPFPatternFactory() -> StringMaskFormatter {
return StringMaskFormatter(pattern: "***.***.***-**", replecementChar: "*", allowNumbers: true, allowText: false)
}
static func CreditCardPatternFactory() -> StringMaskFormatter {
return StringMaskFormatter(pattern: "**** **** **** ****", replecementChar: "*", allowNumbers: true, allowText: false)
}
static func MMYYDatePatternFactory() -> StringMaskFormatter {
return StringMaskFormatter(pattern: "**/**", replecementChar: "*", allowNumbers: true, allowText: false)
}
static func CompleteDatePatternFactory() -> StringMaskFormatter {
return StringMaskFormatter(pattern: "**/**/****", replecementChar: "*", allowNumbers: true, allowText: false)
}
static func SimpleDatePatternFactory() -> StringMaskFormatter {
return StringMaskFormatter(pattern: "**/**/**", replecementChar: "*", allowNumbers: true, allowText: false)
}
}
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