Swift-argument-parser support

[Kyle-Ye]

Can we use swift-argument-parser to replace vapor'console-kit. All the commands and help text will remain the same. But the code is more clear and more maintainable (in my opinion) since more people are familiar with swift-argument-parser than console-kit.

If the maintainer agree on this, I can try to make a PR for it.

[0xTim]

@Kyle-Ye sorry for not getting around to it. The long term goal is to move both the toolbox and Vapor itself over to using Swift Argument Parser. However I believe when we tried it there were missing features like colour support in the terminal that would block us (and make us unable to do it in a non-breaking way)

[Kyle-Ye]

@Kyle-Ye sorry for not getting around to it. The long term goal is to move both the toolbox and Vapor itself over to using Swift Argument Parser. However I believe when we tried it there were missing features like colour support in the terminal that would block us (and make us unable to do it in a non-breaking way)

Maybe we could add a feature request to Swift Argument Parser to support colorful output?

Or just implement the feature ourselves in a fork and hopefully it will be merged into the main branch of SAP.

[Kyle-Ye]

It's such a common feature to support colorful output.

I maintain a CLI tool in my company and also use Swift Argument Parser as a start point. To support colorful output I just manually add something below

import Foundation

/// USAGE:
/// "\("only this string will be green!", color: .green)"
public enum ASCIIColor: String, CaseIterable {
    case black = "\u{001B}[0;30m"
    case red = "\u{001B}[0;31m"
    case green = "\u{001B}[0;32m"
    case yellow = "\u{001B}[0;33m"
    case blue = "\u{001B}[0;34m"
    case magenta = "\u{001B}[0;35m"
    case cyan = "\u{001B}[0;36m"
    case white = "\u{001B}[0;37m"
    case `default` = "\u{001B}[0;0m"
}

extension DefaultStringInterpolation {
    mutating func appendInterpolation<T: CustomStringConvertible>(_ value: T, color: ASCIIColor) {
        appendInterpolation("\(color.rawValue)\(value)\(ASCIIColor.default.rawValue)")
    }
}

public func echo(with string: String, color: ASCIIColor = .default) {
    print("\(string, color: color)")
}

But it seems hard to do it if we want the parsed-command output to be colorful like what currently we are

[0xTim]

It's definitely something they should support longer term I think