node-notifier/lib/utils.js

var cp = require('child_process')
  , os = require('os')
  , fs = require('fs')
  , osVersionError = 'Incorrect OS. node-notify requires Mac OS 10.8 or higher'
  , shellwords = require('shellwords')
  ;

var escapeQuotes = function (str) {
  if (typeof str === 'string') {
    return str.replace(/(["$`\\])/g, '\\$1');
  } else {
    return str;
  }
};

var inArray = function (arr, val) {
  for(var i = 0; i < arr.length; i++) {
    if (arr[i] === val) {
      return true;
    }
  }
  return false;
};

var notifySendFlags = {
  "u":            "urgency",
  "urgency":      "urgency",
  "t":            "expire-time",
  "e":            "expire-time",
  "expire":       "expire-time",
  "expire-time":  "expire-time",
  "i":            "icon",
  "icon":         "icon",
  "c":            "category",
  "category":     "category",
  "h":            "hint",
  "hint":         "hint"
};

module.exports.command = function (notifier, options, cb) {
  var notifyApp = cp.exec(shellwords.escape(notifier) + ' ' + options.join(' '), function (error, stdout, stderr) {
    if (error) {
      return cb(error);
    }

    cb(stderr, stdout);
  });

  return notifyApp;
};

var mapAppIcon = function (options) {
  if (options.appIcon) {
    options.icon = options.appIcon;
    delete options.appIcon;
  }

  return options;
};

var mapText = function (options) {
  if (options.text) {
    options.message = options.text;
    delete options.text;
  }

  return options;
};

var mapIconShorthand = function (options) {
  if (options.i) {
    options.icon = options.i;
    delete options.i;
  }

  return options;
};

module.exports.mapToNotifySend = function (options) {
  options = mapAppIcon(options);
  options = mapText(options);

  for (var key in options) {
    if (key === "message" || key === "title") continue;
    if (options.hasOwnProperty(key) && (notifySendFlags[key] != key)) {
      options[notifySendFlags[key]] = options[key];
      delete options[key];
    }
  }

  return options;
};

module.exports.mapToGrowl = function (options) {
  options = mapAppIcon(options);
  options = mapIconShorthand(options);

  if (options.message) {
    options.text = options.message;
    delete options.message;
  }

  if (options.icon && !Buffer.isBuffer(options.icon)) {
    options.icon = fs.readFileSync(options.icon);
  }

  return options;
};

module.exports.mapToMac = function (options) {
  options = mapIconShorthand(options);
  options = mapText(options);

  if (options.icon) {
    options.appIcon = options.icon;
    delete options.icon;
  }

  return options;
};

module.exports.constructArgumentList = function (options, initial, keyExtra, allowedArguments) {
  var args = [];
  keyExtra = keyExtra || "";
  var checkForAllowed = allowedArguments !== void 0;

  (initial || []).forEach(function (val) {
    args.push('"' + escapeQuotes(val) + '"');
  });
  for(var key in options) {
    if (options.hasOwnProperty(key) && (!checkForAllowed || inArray(allowedArguments, key))) {
      args.push('-' + keyExtra + key, '"' + escapeQuotes(options[key]) + '"');
    }
  }
  return args;
};

module.exports.getOSXVersion = function (cb) {
  return cp.exec("sw_vers -productVersion", cb);
}

module.exports.isMacOSX = function (cb) {
  if (os.type().toLowerCase() != 'darwin') {
    return cb(true, "You can't use the terminal-notifier reporter unless you are on a Mac.");
  }
  return module.exports.getOSXVersion(function (error, stdout, stderr) {
    if (error) {
      return cb(true, error, stderr);
    }
    if (Number(stdout.split(".")[1]) >= 8) {
      return cb(false);
    }

    return cb(true, osVersionError);
  });
};