/**
 * cookie plugin
 *
 * copyright (c) 2006 klaus hartl (stilbuero.de)
 * dual licensed under the mit and gpl licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 */

/**
 * create a cookie with the given name and value and other optional parameters.
 *
 * @example $.cookie('the_cookie', 'the_value');
 * @desc set the value of a cookie.
 * @example $.cookie('the_cookie', 'the_value', {expires: 7, path: '/', domain: 'jquery.com', secure: true});
 * @desc create a cookie with all available options.
 * @example $.cookie('the_cookie', 'the_value');
 * @desc create a session cookie.
 * @example $.cookie('the_cookie', null);
 * @desc delete a cookie by passing null as value.
 *
 * @param string name the name of the cookie.
 * @param string value the value of the cookie.
 * @param object options an object literal containing key/value pairs to provide optional cookie attributes.
 * @option number|date expires either an integer specifying the expiration date from now on in days or a date object.
 *                             if a negative value is specified (e.g. a date in the past), the cookie will be deleted.
 *                             if set to null or omitted, the cookie will be a session cookie and will not be retained
 *                             when the the browser exits.
 * @option string path the value of the path atribute of the cookie (default: path of page that created the cookie).
 * @option string domain the value of the domain attribute of the cookie (default: domain of page that created the cookie).
 * @option boolean secure if true, the secure attribute of the cookie will be set and the cookie transmission will
 *                        require a secure protocol (like https).
 * @type undefined
 *
 * @name $.cookie
 * @cat plugins/cookie
 * @author klaus hartl/klaus.hartl@stilbuero.de
 */

/**
 * get the value of a cookie with the given name.
 *
 * @example $.cookie('the_cookie');
 * @desc get the value of a cookie.
 *
 * @param string name the name of the cookie.
 * @return the value of the cookie.
 * @type string
 *
 * @name $.cookie
 * @cat plugins/cookie
 * @author klaus hartl/klaus.hartl@stilbuero.de
 */
jquery.cookie = function(name, value, options) {
    if (typeof value != 'undefined') { // name and value given, set cookie
        options = options || {};
        if (value === null) {
            value = '';
            options.expires = -1;
        }
        var expires = '';
        if (options.expires && (typeof options.expires == 'number' || options.expires.toutcstring)) {
            var date;
            if (typeof options.expires == 'number') {
                date = new date();
                date.settime(date.gettime() + (options.expires * 24 * 60 * 60 * 1000));
            } else {
                date = options.expires;
            }
            expires = '; expires=' + date.toutcstring(); // use expires attribute, max-age is not supported by ie
        }
        var path = options.path ? '; path=' + options.path : '';
        var domain = options.domain ? '; domain=' + options.domain : '';
        var secure = options.secure ? '; secure' : '';
        document.cookie = [name, '=', encodeuricomponent(value), expires, path, domain, secure].join('');
    } else { // only name given, get cookie
        var cookievalue = null;
        if (document.cookie && document.cookie != '') {
            var cookies = document.cookie.split(';');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = jquery.trim(cookies[i]);
                // does this cookie string begin with the name we want?
                if (cookie.substring(0, name.length + 1) == (name + '=')) {
                    cookievalue = decodeuricomponent(cookie.substring(name.length + 1));
                    break;
                }
            }
        }
        return cookievalue;
    }
};