CliBuilder argument without dash

问题:

Using Groovy CliBuilder, ideally I would like to have an cmd-line as follows:

./MyProgram.groovy CommandName -arg1 -arg2 -arg3

Is is possible to parse pull out the CommandName as an argument using CliBuilder?

回答1:

You can do that if you set the property stopAtNonOption to false so that the parsing does not stop in CommandName. Then you can get the command from CliBuilder options. A tiny example below:

def test(args) {
    def cli = new CliBuilder(usage: 'testOptions.groovy [command] -r -u', stopAtNonOption: false)
    cli.with {
        r longOpt: 'reverse', 'Reverse command'
        u longOpt: 'upper', 'Uppercase command'
    }

    def options = cli.parse(args)
    def otherArguments = options.arguments()
    def command = otherArguments ? otherArguments[0] : 'defaultCommand'

    def result = command
    if (options.r) {
        result = result.reverse()
    }

    if (options.u) {
        result = result.toUpperCase()
    }

    result
}

assert 'myCommand' == test(['myCommand'])
assert 'MYCOMMAND' == test(['myCommand', '-u'])
assert 'dnammoCym' == test(['myCommand', '-r'])
assert 'DNAMMOCYM' == test(['myCommand', '-r', '-u'])
assert 'defaultCommand' == test([])