<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Service

 * @subpackage Technorati

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Utils.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * Collection of utilities for various Zend_Service_Technorati classes.

 *

 * @category   Zend

 * @package    Zend_Service

 * @subpackage Technorati

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Service_Technorati_Utils

{

    /**

     * Parses, validates and returns a valid Zend_Uri object

     * from given $input.

     *

     * @param   string|Zend_Uri_Http $input

     * @return  null|Zend_Uri_Http

     * @throws  Zend_Service_Technorati_Exception

     * @static

     */

    public static function normalizeUriHttp($input)

    {

        // allow null as value

        if ($input === null) {

            return null;

        }

        /**

         * @see Zend_Uri

         */

        require_once 'Zend/Uri.php';

        if ($input instanceof Zend_Uri_Http) {

            $uri = $input;

        } else {

            try {

                $uri = Zend_Uri::factory((string) $input);

            }

            // wrap exception under Zend_Service_Technorati_Exception object

            catch (Exception $e) {

                /**

                 * @see Zend_Service_Technorati_Exception

                 */

                require_once 'Zend/Service/Technorati/Exception.php';

                throw new Zend_Service_Technorati_Exception($e->getMessage(), 0, $e);

            }

        }

        // allow inly Zend_Uri_Http objects or child classes

        if (!($uri instanceof Zend_Uri_Http)) {

            /**

             * @see Zend_Service_Technorati_Exception

             */

            require_once 'Zend/Service/Technorati/Exception.php';

            throw new Zend_Service_Technorati_Exception(

                "Invalid URL $uri, only HTTP(S) protocols can be used");

        }

        return $uri;

    }

    /**

     * Parses, validates and returns a valid Zend_Date object

     * from given $input.

     *

     * $input can be either a string, an integer or a Zend_Date object.

     * If $input is string or int, it will be provided to Zend_Date as it is.

     * If $input is a Zend_Date object, the object instance will be returned.

     *

     * @param   mixed|Zend_Date $input

     * @return  null|Zend_Date

     * @throws  Zend_Service_Technorati_Exception

     * @static

     */

    public static function normalizeDate($input)

    {

        /**

         * @see Zend_Date

         */

        require_once 'Zend/Date.php';

        /**

         * @see Zend_Locale

         */

        require_once 'Zend/Locale.php';

        // allow null as value and return valid Zend_Date objects

        if (($input === null) || ($input instanceof Zend_Date)) {

            return $input;

        }

        // due to a BC break as of ZF 1.5 it's not safe to use Zend_Date::isDate() here

        // see ZF-2524, ZF-2334

        if (@strtotime($input) !== FALSE) {

            return new Zend_Date($input);

        } else {

            /**

             * @see Zend_Service_Technorati_Exception

             */

            require_once 'Zend/Service/Technorati/Exception.php';

            throw new Zend_Service_Technorati_Exception("'$input' is not a valid Date/Time");

        }

    }

    /**

     * @todo public static function xpathQueryAndSet() {}

     */

    /**

     * @todo public static function xpathQueryAndSetIf() {}

     */

    /**

     * @todo public static function xpathQueryAndSetUnless() {}

     */

}