zui/src/js/cookie.js

一个基于 Bootstrap 深度定制开源前端实践方案，帮助你快速构建现代跨屏应用。

/* ========================================================================
 * jQuery Cookie Plugin v1.4.1
 * https://github.com/carhartl/jquery-cookie
 * 
 * ZUI: The file has been changed in ZUI. It will not keep update with the
 * official version in the future.
 * http://zui.sexy
 * ========================================================================
 * Copyright 2013 Klaus Hartl
 * Released under the MIT license
 * ======================================================================== */


/*!
 * jQuery Cookie Plugin v1.4.1
 * https://github.com/carhartl/jquery-cookie
 * Copyright 2006, 2014 Klaus Hartl
 * Released under the MIT license
 */

(function(factory) {
    if(typeof define === 'function' && define.amd) {
        // AMD
        define(['jquery'], factory);
    } else if(typeof exports === 'object') {
        // CommonJS
        factory(require('jquery'));
    } else {
        // Browser globals
        factory(jQuery);
    }
}(function($) {

    var pluses = /\+/g;

    function encode(s) {
        return config.raw ? s : encodeURIComponent(s);
    }

    function decode(s) {
        return config.raw ? s : decodeURIComponent(s);
    }

    function stringifyCookieValue(value) {
        return encode(config.json ? JSON.stringify(value) : String(value));
    }

    function parseCookieValue(s) {
        if(s.indexOf('"') === 0) {
            // This is a quoted cookie as according to RFC2068, unescape...
            s = s.slice(1, -1).replace(/\\"/g, '"').replace(/\\\\/g, '\\');
        }

        try {
            // Replace server-side written pluses with spaces.
            // If we can't decode the cookie, ignore it, it's unusable.
            // If we can't parse the cookie, ignore it, it's unusable.
            s = decodeURIComponent(s.replace(pluses, ' '));
            return config.json ? JSON.parse(s) : s;
        } catch(e) {}
    }

    function read(s, converter) {
        var value = config.raw ? s : parseCookieValue(s);
        return $.isFunction(converter) ? converter(value) : value;
    }

    var config = $.cookie = function(key, value, options) {

        // Write

        if(value !== undefined && !$.isFunction(value)) {
            options = $.extend({}, config.defaults, options);

            if(typeof options.expires === 'number') {
                var days = options.expires,
                    t = options.expires = new Date();
                t.setTime(+t + days * 864e+5);
            }

            return(document.cookie = [
                encode(key), '=', stringifyCookieValue(value),
                options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
                options.path ? '; path=' + options.path : '',
                options.domain ? '; domain=' + options.domain : '',
                options.secure ? '; secure' : ''
            ].join(''));
        }

        // Read

        var result = key ? undefined : {};

        // To prevent the for loop in the first place assign an empty array
        // in case there are no cookies at all. Also prevents odd result when
        // calling $.cookie().
        var cookies = document.cookie ? document.cookie.split('; ') : [];

        for(var i = 0, l = cookies.length; i < l; i++) {
            var parts = cookies[i].split('=');
            var name = decode(parts.shift());
            var cookie = parts.join('=');

            if(key && key === name) {
                // If second argument (value) is a function it's a converter...
                result = read(cookie, value);
                break;
            }

            // Prevent storing a cookie that we couldn't decode.
            if(!key && (cookie = read(cookie)) !== undefined) {
                result[name] = cookie;
            }
        }

        return result;
    };

    config.defaults = {};

    $.removeCookie = function(key, options) {
        if($.cookie(key) === undefined) {
            return false;
        }

        // Must not alter options, thus extending a fresh object...
        $.cookie(key, '', $.extend({}, options, {
            expires: -1
        }));
        return !$.cookie(key);
    };
}));