Question

Is there a standard or recommended getopts library for Groovy that will allow me to quickly process long and short command line arguements in Groovy?

groovy foo.groovy –fname=foo.txt –output=foo.html –verbose

Answer 1

You could also simply use Groovy CliBuilder (which internally uses Apache Commons Cli).

You will find a good example of how it works here=> http://www.reverttoconsole.com/blog/codesnippets/groovy-clibuilder-in-practice/

def cli = new CliBuilder()
cli.with {
     usage: 'Self'
     h longOpt:'help', 'usage information'
     i longOpt:'input', 'input file', args:1
     o longOpt:'output', 'output file',args:1
     a longOpt:'action', 'action to invoke',args:1
     d longOpt:'directory','process all files of directory', args:1
}
def opt = cli.parse(args)
def action
if( args.length == 0) {
    cli.usage()
    return
}
if( opt.h ) {
    cli.usage()
    return
}
if( opt.i ) {
input = opt.i
}
...