Usage:

1. Clone
2. Build Strings scheme using My Mac
3. In Terminal go to Strings folder and run the following:

./main.swift <sourceURL> <destinationURL>

<sourceURL> - URL of Localizable.strings (english version) in your project

<destinationURL> - URL of the file with the resulting Strings struct

Example output:

struct Strings {
    /**
     * %1$@, %2$@ away
     */
    static func endRentalLabelDistanceToDropOff(param1: String, param2: String) -> String {
        return String(format: NSLocalizedString("end-rental.label.distance-to-drop-off", comment: "Text displayed on the alert view informing the user about the name and the distance to the nearest drop-off, e.g. 'Njalsgade, 53m away'"), param1, param2)
    }

    /**
     * I can't find the bike I rented
     */
    static func helpTitleICantFindTheBike() -> String {
        return NSLocalizedString("help.title.i-cant-find-the-bike", comment: "Help topic title")
    }
}

Adding a new string to your project:

1. Add a translation in the en.lproj/Localizable.strings with the following format:

\* <comment> *\
<new-string-id> = <english translation>;

<new-string-id> - use a combination of alphanumeric, . and - characters. Preferably in a format:

general-area.type-of-string.context,

Examples:

payment.text-input-placeholder.credit-card-expiry-date generic.button.continue end-rental.title.ending-rental-outside-of-dropzone

2. Run the script

3. Use the autogenerated function, e.g. Strings.paymentTextInputPlaceholderCreditCardExpiryDate()