Config4CLI

This little project provides a smaller converter from [http://commons.apache.org/proper/commons-cli/](Apache Commons CLI) commandline parser to the Typesafe Config.

Maven

<dependency>
  <groupId>de.mukis</groupId>
  <artifactId>config4cli</artifactId>
  <version>0.1.0</version>
</dependency>

Usage

First you generate your cli options as usual with commons-cli. For example

Options options = new Options();

Option debug = new Option("debug", "print debugging information");
Option help = new Option( "help", "print this message" );

options.addOption(debug);
options.addOption(help);

For more information look at the usage page.

Your main method could now look like this

public static void main(String[] args) {
    CommandLineParser basicParser = new BasicParser();
    CommandLine cmd = basicParser.parse(options, args);

    Config config = CommandLineConfig.fromCommandLine(cmd);
}

Conversion options

Currently theres only one conversion strategy.

non-arg options

option-name = true

Example call: -debug

single-arg options

option-name = argument

Example call: -file /absolute/path

property-arg options

option-name {
    prop1 = val1
    prop2 = val2
}

Example call: -D prop1=val1 -D prop2=val2

multi-arg options

option-name {
    argName1 = val1
    argName2 = val2
}

Example call: -position 23.6,12.4,1452,803

The options object is defined as follows. Note that the withArgName parameter must have the same structure as the actual commandline input. This includes separator and argument count.

Option position = OptionBuilder.withArgName("longitude,latitude,altitude,speed") //
         .hasArgs(4) //
         .withValueSeparator(',') //
         .withDescription("use four arguments for something") //
         .create("position");

Conversion will result in

position {
    longitude = 23.6
    latitude = 12.4
    altitude = 1452
    speed = 803
}

License

The license is Apache 2.0, see LICENSE.txt.

Links

• Apache Commons CLI
• Typesafe Config