Time converter "071953Z" (ZULU TO CURRENT TIME) - ios

Question

I'm using an api that gives me the following time format:
"071953Z"
07 is the day
19 is the hours
53 are the minutes
Z is Zulu time
As you can see, there is no current month and year, i also want that to be added but i dont know how.
Could you help me to convert this to the current time? Thanks!

Answer 1

I think your best bet is to store the partial-datetime in a DateComponents. Then you can add a month and year to it and use Foundation's calendar API to do what you want:
extension DateComponents {
static func from(str: String) -> DateComponents? {
guard str.characters.count == 7 else {
return nil
}
var components = DateComponents()
components.timeZone = TimeZone(secondsFromGMT: 0)
components.calendar = Calendar(identifier: .gregorian)
let ranges = [0,2,4].map {
return str.index(str.startIndex, offsetBy: $0)..<str.index(str.startIndex, offsetBy: $0 + 2)
}
if let day = Int(str[ranges[0]]) {
components.day = day
} else {
return nil
}
if let hour = Int(str[ranges[1]]), hour < 24 {
components.hour = hour
} else {
return nil
}
if let minute = Int(str[ranges[2]]), minute < 60 {
components.minute = minute
} else {
return nil
}
return components
}
}
// This formatter is to convert the date to your local time. Configure to taste
let formatter = DateFormatter()
formatter.dateStyle = .medium
formatter.timeStyle = .medium
if var components = DateComponents.from(str: "071953Z") {
components.year = 2017
components.month = 4
if let date = components.date {
print(formatter.string(from: date))
} else {
print("\(components) does not make a valid date")
}
}