/*

YUI 3.10.3 (build 2fb5187)

Copyright 2013 Yahoo! Inc. All rights reserved.

Licensed under the BSD License.

http://yuilibrary.com/license/

*/

YUI.add('querystring-stringify', function (Y, NAME) {

/**

 * Provides Y.QueryString.stringify method for converting objects to Query Strings.

 *

 * @module querystring

 * @submodule querystring-stringify

 */

var QueryString = Y.namespace("QueryString"),

    stack = [],

    L = Y.Lang;

/**

 * Provides Y.QueryString.escape method to be able to override default encoding

 * method.  This is important in cases where non-standard delimiters are used, if

 * the delimiters would not normally be handled properly by the builtin

 * (en|de)codeURIComponent functions.

 * Default: encodeURIComponent

 *

 * @method escape

 * @for QueryString

 * @static

 **/

QueryString.escape = encodeURIComponent;

/**

 * <p>Converts an arbitrary value to a Query String representation.</p>

 *

 * <p>Objects with cyclical references will trigger an exception.</p>

 *

 * @method stringify

 * @for QueryString

 * @public

 * @param obj {Variant} any arbitrary value to convert to query string

 * @param cfg {Object} (optional) Configuration object.  The three

 * supported configurations are:

 * <ul><li>sep: When defined, the value will be used as the key-value

 * separator.  The default value is "&".</li>

 * <li>eq: When defined, the value will be used to join the key to

 * the value.  The default value is "=".</li>

 * <li>arrayKey: When set to true, the key of an array will have the

 * '[]' notation appended to the key.  The default value is false.

 * </li></ul>

 * @param name {String} (optional) Name of the current key, for handling children recursively.

 * @static

 */

QueryString.stringify = function (obj, c, name) {

    var begin, end, i, l, n, s,

        sep = c && c.sep ? c.sep : "&",

        eq = c && c.eq ? c.eq : "=",

        aK = c && c.arrayKey ? c.arrayKey : false;

    if (L.isNull(obj) || L.isUndefined(obj) || L.isFunction(obj)) {

        return name ? QueryString.escape(name) + eq : '';

    }

    if (L.isBoolean(obj) || Object.prototype.toString.call(obj) === '[object Boolean]') {

        obj =+ obj;

    }

    if (L.isNumber(obj) || L.isString(obj)) {

        return QueryString.escape(name) + eq + QueryString.escape(obj);

    }

    if (L.isArray(obj)) {

        s = [];

        name = aK ? name + '[]' : name;

        l = obj.length;

        for (i = 0; i < l; i++) {

            s.push( QueryString.stringify(obj[i], c, name) );

        }

        return s.join(sep);

    }

    // now we know it's an object.

    // Check for cyclical references in nested objects

    for (i = stack.length - 1; i >= 0; --i) {

        if (stack[i] === obj) {

            throw new Error("QueryString.stringify. Cyclical reference");

        }

    }

    stack.push(obj);

    s = [];

    begin = name ? name + '[' : '';

    end = name ? ']' : '';

    for (i in obj) {

        if (obj.hasOwnProperty(i)) {

            n = begin + i + end;

            s.push(QueryString.stringify(obj[i], c, n));

        }

    }

    stack.pop();

    s = s.join(sep);

    if (!s && name) {

        return name + "=";

    }

    return s;

};

}, '3.10.3', {"requires": ["yui-base"]});