<?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_View

 * @subpackage Helper

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

 */

/** @see Zend_View_Helper_Abstract */

require_once 'Zend/View/Helper/Abstract.php';

/**

 * Helper for retrieving the BaseUrl

 *

 * @package    Zend_View

 * @subpackage Helper

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

 */

class Zend_View_Helper_BaseUrl extends Zend_View_Helper_Abstract

{

    /**

     * BaseUrl

     *

     * @var string

     */

    protected $_baseUrl;

    /**

     * Returns site's base url, or file with base url prepended

     *

     * $file is appended to the base url for simplicity

     *

     * @param  string|null $file

     * @return string

     */

    public function baseUrl($file = null)

    {

        // Get baseUrl

        $baseUrl = $this->getBaseUrl();

        // Remove trailing slashes

        if (null !== $file) {

            $file = '/' . ltrim($file, '/\\');

        }

        return $baseUrl . $file;

    }

    /**

     * Set BaseUrl

     *

     * @param  string $base

     * @return Zend_View_Helper_BaseUrl

     */

    public function setBaseUrl($base)

    {

        $this->_baseUrl = rtrim($base, '/\\');

        return $this;

    }

    /**

     * Get BaseUrl

     *

     * @return string

     */

    public function getBaseUrl()

    {

        if ($this->_baseUrl === null) {

            /** @see Zend_Controller_Front */

            require_once 'Zend/Controller/Front.php';

            $baseUrl = Zend_Controller_Front::getInstance()->getBaseUrl();

            // Remove scriptname, eg. index.php from baseUrl

            $baseUrl = $this->_removeScriptName($baseUrl);

            $this->setBaseUrl($baseUrl);

        }

        return $this->_baseUrl;

    }

    /**

     * Remove Script filename from baseurl

     *

     * @param  string $url

     * @return string

     */

    protected function _removeScriptName($url)

    {

        if (!isset($_SERVER['SCRIPT_NAME'])) {

            // We can't do much now can we? (Well, we could parse out by ".")

            return $url;

        }

        if (($pos = strripos($url, basename($_SERVER['SCRIPT_NAME']))) !== false) {

            $url = substr($url, 0, $pos);

        }

        return $url;

    }

}