node-getopt/examples/help.js

featured command line args parser

// examples/help.js
// Works with help
Getopt = require('..');

getopt = new Getopt([
  ['s' , ''                    , 'short option.'],
  [''  , 'long'                , 'long option.'],
  ['S' , 'short-with-arg=ARG'  , 'option with argument', 'S'],
  ['L' , 'long-with-arg=ARG'   , 'long option with argument'],
  [''  , 'color[=COLOR]'       , 'COLOR is optional'],
  ['m' , 'multi-with-arg=ARG+' , 'multiple option with argument'],
  [''  , 'no-comment'],
  ['h' , 'help'                , 'display this help']
]);

// Use custom help template instead of default help
// [[OPTIONS]] is the placeholder for options list
getopt.setHelp(
  "Usage: node help.js [OPTION]\n" +
  "node-getopt help demo.\n" +
  "\n" +
  "[[OPTIONS]]\n" +
  "\n" +
  "Installation: npm install node-getopt\n" +
  "Respository:  https://github.com/jiangmiao/node-getopt"
);

getopt.showHelp();