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common.js 

/*
 * utils.js: Utility functions for the nconf module.
 *
 * (C) 2011, Charlie Robbins
 *
 */
 
var fs = require('fs'),
    async = require('async'),
    formats = require('./formats'),
    stores = require('./stores');

var common = exports;

function loadFiles (files)

@files {Object|Array} List of files (or settings object) to load.

@callback {function} Continuation to respond to when complete.

Loads all the data in the specified files.

 
common.loadFiles = function (files, callback) {
  if (!files) {
    return callback(null, {});
  }

  var options = Array.isArray(files) ? { files: files } : files,
      store = new stores.Memory();

Set the default JSON format if not already specified

 
  options.format = options.format || formats.json;

  function loadFile (file, next) {
    fs.readFile(file, function (err, data) {
      if (err) {
        return next(err);
      }

      data = options.format.parse(data.toString());
      Object.keys(data).forEach(function (key) {
        store.merge(key, data[key]);
      });

      next();
    });
  }

  async.forEach(files, loadFile, function (err) {
    return err ? callback(err) : callback(null, store.store);
  });
};