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go-getoptions v0.17.0 Release Notes

Release Date: 2019-10-24 // over 4 years ago

  • 🚀 As the releases before, this release has 100% test coverage.

    🚀 This release keeps on the work of removing the kinks around subcommands.
    An example showing subcommands can be found in ./examples/mygit.

    🚦 It also introduces the use of context to propagate cancelation signals, etc. to the child commands.

    Finally, it introduces a new helper that captures interrupts (for example Ctrl-C) and returns a top level context.

    💥 Breaking changes

    🔨 Refactor NewCommmand as a method.
    This will allow the built-in help to have information about the parent.
    It might also help with autocompletion.

    🔄 Change sigature to opt.NewCommand(name, description string).
    It takes a name and description now.

    🔄 Change signature of CommandFn to have a context as the first argument.
    🚦 It will allow the parent to propagate cancelation signals, etc. to the child commands.
    This change goes along a change to the helper opt.Dispatch to also have a context as the first argument.

    ⚡️ Updating:

    - list := getoptions.NewCommand().Self("list", "list instances").+ list := opt.NewCommand("list", "list instances"). SetOption(parent.Option("help"), parent.Option("debug")). SetCommandFn(runInstanceList) list.StringSlice("tag", 1, 99, opt.Alias("t"), opt.Description("Any AWS tags you want to list"))- opt.Command(list) ...- err = opt.Dispatch("help", remaining)+ err = opt.Dispatch(context.Background(), "help", remaining) ...-func runInstanceList(opt \*getoptions.GetOpt, args []string) error {+func runInstanceList(ctx context.Context, opt \*getoptions.GetOpt, args []string) error {

    🆕 New Features

    • 🚦 Introduce opt.InterruptContext(), a helper that returns a top level context that captures interrupt signals (os.Interrupt, syscall.SIGHUP, syscall.SIGTERM).
      An example can be found in ./examples/mygit.