msimerson/log-ship-elastic-postfix

// node built-ins
var fs        = require('fs');
var path      = require('path');

// npm modules
var ini       = require('ini');

// local modules
var logger    = require('./logger');

function loadConfig (etcDir) {
  var file = 'log-ship-elastic-postfix.ini';
  var candidates = [];
  if (etcDir) candidates.push(path.resolve(etcDir, file));
  if (etcDir !== '/etc') {
    candidates.push(path.resolve('/etc', file));
  }
  if (etcDir !== './') {
    candidates.push(path.resolve('./', file));
  }

  // first one that is readable wins
  for (var i = 0; i < candidates.length; i++) {
    var filePath = candidates[i];
    try {
      var data = fs.readFileSync(filePath, 'utf-8');
      return ini.parse(data);
    }
    catch (ignore) {
      logger.error(ignore);
    }
  }
}

module.exports = function (etcDir) {
  return new loadConfig(etcDir);
}