index.js

/**
 * node-archiver
 *
 * Copyright (c) 2015 Chris Talkington.
 * Licensed under the MIT license.
 * https://github.com/archiverjs/node-archiver/blob/master/LICENSE
 */

var Archiver = require('./lib/core');

var formats = {};

var vending = module.exports = function(format, options) {
  return vending.create(format, options);
};

vending.create = function(format, options) {
  if (formats[format]) {
    var instance = new Archiver(format, options);
    instance.setFormat(format);
    instance.setModule(new formats[format](options));

    return instance;
  } else {
    throw new Error('create(' + format + '): format not registered');
  }
};

vending.registerFormat = function(format, module) {
  if (formats[format]) {
    throw new Error('register(' + format + '): format already registered');
  }

  if (typeof module !== 'function') {
    throw new Error('register(' + format + '): format module invalid');
  }

  if (typeof module.prototype.append !== 'function' || typeof module.prototype.finalize !== 'function') {
    throw new Error('register(' + format + '): format module missing methods');
  }

  formats[format] = module;
};

vending.registerFormat('zip', require('./lib/plugins/zip'));
vending.registerFormat('tar', require('./lib/plugins/tar'));
vending.registerFormat('json', require('./lib/plugins/json'));