Issues with sub options

[ericnewton76]

Issue by wadewegner
Thursday Oct 01, 2015 at 18:07 GMT
Originally opened as gsscoder/commandline#249

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I'm having an issue with the parser not figuring out my sub-options.

Here's the code in Main:

var invokedVerb = "";
var invokedVerbInstance = new object();

var options = new Options();
if (!CommandLine.Parser.Default.ParseArguments(args, options,
    (verb, subOptions) =>
    {
        // if parsing succeeds the verb name and correct instance
        // will be passed to onVerbCommand delegate (string,object)
        invokedVerb = verb;
        if (!string.IsNullOrEmpty(invokedVerb))
        invokedVerbInstance = subOptions;
    }))
{
    Environment.Exit(CommandLine.Parser.DefaultExitCodeFail);
}

This is pretty much right from the wiki.

My options are defined as this:

class Options
{
    public Options()
    {
        CpVerb = new CPSubOptions { };
    }

    [VerbOption("cp", HelpText = "Interact with cp.")]
    public CPSubOptions CpVerb { get; set; }

    [HelpVerbOption]
    public string GetUsage(string verb)
    {
        return HelpText.AutoBuild(this, verb);
    }
}

class CPSubOptions
{
    [Option('n', "name", HelpText = "Get details name.")]
    public string Name { get; set; }
}

When I run with cp as the args, it works and the parser determines that CPSubOptions is the subOptions and invokedVerbInstance is set appropriately.

However, when I run with cp --name blah or cp -n blah, the subOptions is null, so it's not parsed properly.

Any help?

[ericnewton76]

Comment by nemec
Sunday Oct 04, 2015 at 06:50 GMT

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What version are you using? Based on the stable branch, your sample code works perfectly (for me). Based on Master, it fails to compile since the library has gone through some major changes for 2.0.

[ericnewton76]

Comment by gsscoder
Monday Oct 05, 2015 at 22:43 GMT

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📎 Please read: #250. Thanks for collaboration and patience! 😅
Giacomo
P.S.: valid only for me, if a main contrib. is available he's obviously free to support devs/users of the project.

[ericnewton76]

Comment by Mizipzor
Tuesday Feb 02, 2016 at 20:25 GMT

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@wadewegner did you figure it out? I also tried your code and as @nemec I get the expected result; subOptions is not null and Name has a value.

[ericnewton76]

Comment by Jamby93
Monday Apr 18, 2016 at 19:59 GMT

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Same issue here with an almost identical class configuration. subOptions passed to callback is null, although options.subOption is valid with correct values (options.CpVerb in your case).

[ericnewton76]

Comment by brandorf
Wednesday Apr 27, 2016 at 19:16 GMT

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I'm seeing this as well with latest version from nuget.

[ericnewton76]

Comment by nemec
Friday Apr 29, 2016 at 00:08 GMT

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@Jamby93 @brandorf latest stable or prerelease? I just tested again with 1.9.71 from NuGet, copy and pasting the above, and it works perfectly. VS 2015, .Net 4.5.2 in case you're running something different.

The exact code: https://gist.github.com/nemec/bc9d78e47d7a7d8a72a9711488b3bfef