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From: "Viesca Novack, Andrei" <andrein@amazon.com>
To: "user@commons.apache.org" <user@commons.apache.org>
Date: Thu, 25 Oct 2012 15:47:42 -0700
Subject: [CLI] Using OptionGroups
Thread-Topic: [CLI] Using OptionGroups
Thread-Index: Ac2zAirL8wOZ2WceTZmKjXF+0xyRCA==
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Hello all,
First of all I thank you for Commons CLI, such a useful library!

Question:
I have two sets of arguments in my command line java program, I haven't bee=
n able to find documentation on how to handle different OptionGroups, I wan=
t to have the program detect that it got either group1, group2 or help. To =
make it interesting, group 1 contains required and not required arguments.

I am using release 1.2 and here's my code so far:

Option in =3D OptionBuilder.hasArg().withArgName("file")
				.withLongOpt("in").withDescription("VCD file to convert.")
				.create("i");
		in.setRequired(true);

		Option out =3D OptionBuilder.hasArg().withArgName("file")
				.withLongOpt("out").withDescription("Output CSV file.")
				.create("o");
		out.setRequired(true);

		Option getsignals =3D new Option(
				"g",
				"getsignals",
				false,
				"Gets a list of signals available in a VCD file. Use in conjunction wit=
h the i option only.");
		getsignals.setRequired(true);

		Option signals =3D OptionBuilder
				.hasArgs()
				.withArgName("signalList")
				.withLongOpt("signals")
				.withDescription(
						"Comma separated list of requested signals to include in the CSV.")
				.withValueSeparator(',').withType(new ArrayList<String>())
				.create("s");
		signals.setRequired(true);

		Option timeUnit =3D OptionBuilder
				.hasArg()
				.withLongOpt("timeUnit")
				.withDescription(
						"Time units to use. Options: 'ms','us' or 'ns'.")
				.create("t");
		timeUnit.setRequired(false);

		Option noDuplicates =3D new Option("n", "noDuplicates", false,
				"Set flag to remove duplicate time entries.");
		noDuplicates.setRequired(false);

		Option append =3D new Option("a", "append", false,
				"Set flag to append information to existing CSV.");
		append.setRequired(false);

		Option getDeltas =3D new Option("d", "deltas", false,
				"Set to calculate delta values between entries.");
		getDeltas.setRequired(false);

		Option help =3D new Option("h", "help", false,
				"Prints usage information.");
		help.setRequired(true);

		// Group for converting:
		options =3D new Options();
		OptionGroup groupConvert =3D new OptionGroup();
		groupConvert.addOption(in);
		groupConvert.addOption(out);
		groupConvert.addOption(signals);
		groupConvert.addOption(timeUnit);
		groupConvert.addOption(noDuplicates);
		groupConvert.addOption(append);
		groupConvert.addOption(getDeltas);
		groupConvert.addOption(getsignals);
		groupConvert.setRequired(true);

		// Group for viewing signals
		OptionGroup groupViewSignals =3D new OptionGroup();
		groupViewSignals.addOption(in);
		groupViewSignals.addOption(getsignals);
		groupViewSignals.setRequired(true);

		options.addOption(help);
		options.addOptionGroup(groupConvert);
		options.addOptionGroup(groupViewSignals);

Thanks!
Andrei Viesca

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