dynoSrc-cookie.js

/**
 * dynoSrc-cookie
 */

(function (dynoSrc) {

var manifest = dynoSrc.manifest,

  cookieName = '<%= cookieName %>' || '_ds',
  cookiePairSeparator = '<%= cookiePairSeparator %>' || '|',
  cookieRevSeparator = '<%= cookieRevSeparator %>' || '@';

/*\
|*|
|*|  :: cookies.js ::
|*|
|*|  A complete cookies reader/writer framework with full unicode support.
|*|
|*|  https://developer.mozilla.org/en-US/docs/DOM/document.cookie
|*|
|*|  This framework is released under the GNU Public License, version 3 or later.
|*|  http://www.gnu.org/licenses/gpl-3.0-standalone.html
|*|
|*|  Syntaxes:
|*|
|*|  * docCookies.setItem(name, value[, end[, path[, domain[, secure]]]])
|*|  * docCookies.getItem(name)
|*|  * docCookies.removeItem(name[, path], domain)
|*|  * docCookies.hasItem(name)
|*|  * docCookies.keys()
|*|
\*/

var docCookies = {
  getItem: function (sKey) {
    return decodeURIComponent(document.cookie.replace(new RegExp("(?:(?:^|.*;)\\s*" + encodeURIComponent(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=\\s*([^;]*).*$)|^.*$"), "$1")) || null;
  },
  setItem: function (sKey, sValue, vEnd, sPath, sDomain, bSecure) {
    if (!sKey || /^(?:expires|max\-age|path|domain|secure)$/i.test(sKey)) { return false; }
    var sExpires = "";
    if (vEnd) {
      switch (vEnd.constructor) {
        case Number:
          sExpires = vEnd === Infinity ? "; expires=Fri, 31 Dec 9999 23:59:59 GMT" : "; max-age=" + vEnd;
          break;
        case String:
          sExpires = "; expires=" + vEnd;
          break;
        case Date:
          sExpires = "; expires=" + vEnd.toUTCString();
          break;
      }
    }
    document.cookie = encodeURIComponent(sKey) + "=" + encodeURIComponent(sValue) + sExpires + (sDomain ? "; domain=" + sDomain : "") + (sPath ? "; path=" + sPath : "") + (bSecure ? "; secure" : "");
    return true;
  },
  removeItem: function (sKey, sPath, sDomain) {
    if (!sKey || !this.hasItem(sKey)) { return false; }
    document.cookie = encodeURIComponent(sKey) + "=; expires=Thu, 01 Jan 1970 00:00:00 GMT" + ( sDomain ? "; domain=" + sDomain : "") + ( sPath ? "; path=" + sPath : "");
    return true;
  },
  hasItem: function (sKey) {
    return (new RegExp("(?:^|;\\s*)" + encodeURIComponent(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=")).test(document.cookie);
  },
  keys: /* optional method: you can safely remove it! */ function () {
    var aKeys = document.cookie.replace(/((?:^|\s*;)[^\=]+)(?=;|$)|^\s*|\s*(?:\=[^;]*)?(?:\1|$)/g, "").split(/\s*(?:\=[^;]*)?;\s*/);
    for (var nIdx = 0; nIdx < aKeys.length; nIdx++) { aKeys[nIdx] = decodeURIComponent(aKeys[nIdx]); }
    return aKeys;
  }
};

function readCookie () {
  var cookie = docCookies.getItem(cookieName) || '',
      kvPairs = cookie ? cookie.split(cookiePairSeparator) : [],
      cookieRevSeparator = cookieRevSeparator;

  // Parse out modules.
  kvPairs.forEach(function (pair) {
    var parts = pair.split(cookieRevSeparator),
        module = parts[0],
        version = parts[1];

    manifest[module] = version;
  });
}

function writeCookie () {
  var cookie = '',
      encodedPairs = [],
      name;

  // Encode for cookie.
  for (name in manifest) {
    encodedPairs.push(name + cookieRevSeparator + manifest[name]);
  }

  cookie = encodedPairs.join(cookiePairSeparator);
  docCookies.setItem(cookieName, cookie, Infinity, '/');
}

function destroyCookie () {
  docCookies.removeItem(cookieName);
}

// Automatically write manifest out to cookie when it updates.
dynoSrc.onUpdate(writeCookie.bind(dynoSrc));
// Automatically nuke cookie if destroy occurs
dynoSrc.onDestroy(destroyCookie);
// Prime manifest with values cached in cookie.
readCookie.call(dynoSrc);

})(window.dynoSrc);