What characters are allowed in a iOS file name?

Question

I\'m looking for a way to make sure a string can be used as a file name under iOS. I\'m currently in the section of the code that deletes incompatible characters. I\'m wonde

Answer 1

Base on Marian Answers, here is a string extension to remove any unwanted characters.

extension String {

func stripCharacters() -> String {
    var invalidCharacters = CharacterSet(charactersIn: ":/")
    invalidCharacters.formUnion(.newlines)
    invalidCharacters.formUnion(.illegalCharacters)
    invalidCharacters.formUnion(.controlCharacters)

    let newString = self
        .components(separatedBy: invalidCharacters)
        .joined(separator: "_")

    return newString
   }
}

Example:
let fileName = "Man(lop23/45"
let newFileName = fileName.stripCharacters()
print(newFileName)