customText.swift

//
//  customText.swift
//
//  Created by Nicolò Candiani on 03/09/17.
//

import UIKit

extension String{
    
    func customText() -> NSMutableAttributedString {
        let fontSuper:UIFont? = UIFont(name: "Helvetica", size:10)
        let font = UIFont(name: "Helvetica", size: 18)
        let attString:NSMutableAttributedString = NSMutableAttributedString(string: self, attributes: [NSAttributedStringKey.font:font!])
        var indexA = Array(repeating: 0, count: 10)
        var indexB = Array(repeating: 0, count: 10)
        var indexC = Array(repeating: 0, count: 10)
        var indexD = Array(repeating: 0, count: 10)
        var x = 0
        var z = 0
        var y = 0
        var w = 0
        
        for a in 0..<self.count{
            let index = self.index(self.startIndex, offsetBy: a)
            if self[index] == "{"{
                indexA[x] = a
                debugPrint(indexA[x])
                x+=1
            }
            if self[index] == "}"{
                indexB[z] = a
                debugPrint(indexB[z])
                z+=1
            }
            if self[index] == "£"{
                indexC[y] = a
                y+=1
            }
            if self[index] == "$"{
                indexD[w] = a
                w+=1
            }
        }
     
  
        
        for  a in 0..<10{
            if indexA[a] != 0 || indexB[a] != 0 {
                for b in indexA[a]+1..<indexB[a]{
                    attString.setAttributes([NSAttributedStringKey.font:fontSuper!,NSAttributedStringKey.baselineOffset:10], range: NSRange(location:b,length:1))
                }
            }
            if indexC[a] != 0 || indexD[a] != 0 {
                for b in indexC[a]+1..<indexD[a]{
                    attString.setAttributes([NSAttributedStringKey.font:fontSuper!,NSAttributedStringKey.baselineOffset:-5], range: NSRange(location:b,length:1))
                }
            }
        }
        attString.mutableString.replaceOccurrences(of: "{", with: "", options: NSString.CompareOptions.caseInsensitive, range: NSRange(location: 0, length: attString.length))
        attString.mutableString.replaceOccurrences(of: "}", with: "", options: NSString.CompareOptions.caseInsensitive, range: NSRange(location: 0, length: attString.length))
        attString.mutableString.replaceOccurrences(of: "£", with: "", options: NSString.CompareOptions.caseInsensitive, range: NSRange(location: 0, length: attString.length))
        attString.mutableString.replaceOccurrences(of: "$", with: "", options: NSString.CompareOptions.caseInsensitive, range: NSRange(location: 0, length: attString.length))
        return attString
    }
    }