Meet furious - commander inspired elegant solution for creating command line tools.

furious is ultra lightweight and less than 100 lines of code. The API is dead simple and have been modified from commander to make few things simpler.

Installation

npm install furious --save

API

furious

var furious = require('furious');
//add commands and options here 
furious.execute(process.argv , 'Tool for doing string operations'); //execute the user given command.  

NOTE : Don't forget to call furious.execute() at the end. It is responsible for executing the user command.

.command(commandName , description , callback)

Create a command with this function.

• commandName string - Command Name.
• decription string - Description for the Command.
• callback function(args) - function to be executed when command is given in the command line. args - array of arguments.
• Example : programname upper hello - Here upper is the Command name and hello is available in args of the callback.

furious
  .command('upper' , 'print upper case values' , function(args){
    var firstArg = args[0];
    console.log(firstArg.toUpperCase());
  });

.option(optionNamesArray , description , callback)

Create options for already existing command.

• optionNamesArray array - Option names. Each option name should start with - or --
• description array - Description about the Option.
• callback function(args) - function to be executed when option is given in the command line. args - array of arguments.
• Example : programname upper -h - Here upper is Command name and -h is the option.

furious
  .command('upper' , 'print upper case values' , function(args){
    var firstArg = args[0];
    console.log(firstArg.toUpperCase());
  })
  .option(['-h' ,'--help'] , 'Help for Upper' , function(args){
    console.log('You can provide help for this command here.');
  });

In this case ,both programname upper -h and programname upper --help invoke the same callback.

.alias( aliasArray )

Specify Alias for commands.

furious
  .command('upper' , 'print upper case values' , function(args){
    var firstArg = args[0];
    console.log(firstArg.toUpperCase());
  })
  .alias(['up' , 'u']);

.execute(argv , description , noCommandOrOptionOperation , commonOperation)

This is where the user given command on the terminal is parsed and executed.

• argv array - send in process.argv to execute the command given by user.
• description string - Description of the command line tool.
• noCommandOrOptionOperation function() - function to be executed when there is no commands given by user or the command definition is not available.
• commonOperation function(argv) - function to be executed commonly for all the commands. Eg. You may instantiate timers for measuring the performance of your utility here.

var noCommandOrOptionOperation = function(){ console.log('Please Specify a Command or Option'); };
var commonOperation = function(argv){console.log('Welcome to the cli');};

furious.execute(process.argv , 'Cli for something' , noCommandOrOptionOperation , commonOperation );

Expect for a printHelp function in future versions , that can be easily used in noCommandOrOptionOperation and commonOperation.

Caveats

• If definition for a command is specified twice then , first definition will be considered and rest are rejected.
• The package is in beta phase and has few things left behind to do. So watch out for version 1.0.0 , until then , try to play around with it.

Contribution

More than welcomed. Feel free to send in a pull request or file an issue.

License

The MIT License.