Java Properties Converter

prop2xml.groovy

if (args.length == 0) {
    println("Usage: groovy prop2xml.groovy messages.(properties|xml) [format]")
    println("read from STDIN: groovy prop2xml.groovy - [format]")
    System.exit(0)
}

def input = args[0] == '-'
    ? System.in
    : new File(args[0]).newInputStream()
def format = args.size() > 1
    ? args[1]
    : args[0].substring(args[0].lastIndexOf(".") + 1)
def props = new Properties()

input.withStream { stream ->
    if (format.endsWith("xml")) {
        props.loadFromXML(stream)
        props.store(System.out, null)
    } else {
        props.load(stream)
        props.storeToXML(System.out, null)
    }
}