Example usage for io.vertx.core.cli CommandLine isAskingForHelp

Introduction

In this page you can find the example usage for io.vertx.core.cli CommandLine isAskingForHelp.

Prototype

boolean isAskingForHelp();

Source Link

Document

Checks whether or not the user has passed a "help" option and is asking for help.

Usage

From source file:examples.cli.CLIExamples.java

License:Open Source License

public void example9(PrintStream stream) {
    CLI cli = CLI.create("test")
            .addOption(new Option().setLongName("help").setShortName("h").setFlag(true).setHelp(true))
            .addOption(new Option().setLongName("mandatory").setRequired(true));

    CommandLine line = cli.parse(Collections.singletonList("-h"));

    // The parsing does not fail and let you do:
    if (!line.isValid() && line.isAskingForHelp()) {
        StringBuilder builder = new StringBuilder();
        cli.usage(builder);/*from www .ja  v a  2 s  .  c  o  m*/
        stream.print(builder.toString());
    }
}

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