Styjun

I want masking email in textfield.text, but I only get the value in the middle. I want to get the value from the middle to @ gmail.com like example below.

ex:

1. let var = 12345678@gmail.com

output = ****5678@gmail.com

2. let var = 123456789@gmail.com

output = ****56789@gmail.com

 let email = "123456789@gmail.com"

 let components = email.components(separatedBy: "@")

 let result = hideMidChars(components.first!) + "@" + components.last!

 print(result)

output I get: ****5****@gmail.com

my expectations: ****56789@gmail.com

func hide(email: String) -> String 

 let parts = email.split(separator: "@")
 if parts.count < 2 
 return email
 
 let name = parts[0]
 let appendix = parts[1]
 let lenght = name.count
 if lenght == 1 
 return "*@(appendix)"
 
 let semiLenght = lenght / 2

 var suffixSemiLenght = semiLenght
 if (lenght % 2 == 1) 
 suffixSemiLenght += 1
 

 let prefix = String(repeating: "*", count: semiLenght)
 let lastPart = String(name.suffix(suffixSemiLenght))

 let result = "(prefix)(lastPart)@(appendix)"
 return result

let email = "123456789@gmail.com"
let result = hide(email: email)
print(result)

try extending the string protocol and declare a variable which returns an .init(repeating: ,count):

extension StringProtocol 
 var masked: String 
 return String(repeating: "•", count: Swift.max(0, count - count/2)) + suffix(count/2)
 

usage as follows:

let email = "123456789@gmail.com"

print(email.masked) //"••••••••••gmail.com"

if you want a part of the email showing just manipulate the suffix(count - 3) as follows:

return String(repeating: "•", count: Swift.max(0, count - count/2)) + suffix(count/2)