<?php

/*

 *  $Id$

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 * This software consists of voluntary contributions made by many individuals

 * and is licensed under the LGPL. For more information, see

 * <http://www.doctrine-project.org>.

 */

namespace Doctrine\Common\Cache;

/**

 * Xcache cache driver.

 *

 * @license http://www.opensource.org/licenses/lgpl-license.php LGPL

 * @link    www.doctrine-project.org

 * @since   2.0

 * @version $Revision: 3938 $

 * @author  Benjamin Eberlei <kontakt@beberlei.de>

 * @author  Guilherme Blanco <guilhermeblanco@hotmail.com>

 * @author  Jonathan Wage <jonwage@gmail.com>

 * @author  Roman Borschel <roman@code-factory.org>

 * @author  David Abdemoulaie <dave@hobodave.com>

 */

class XcacheCache extends AbstractCache

{

    /**

     * {@inheritdoc}

     */

    public function getIds()

    {

        $this->_checkAuth();

        $keys = array();

        for ($i = 0, $count = xcache_count(XC_TYPE_VAR); $i < $count; $i++) {

            $entries = xcache_list(XC_TYPE_VAR, $i);

            if (is_array($entries['cache_list'])) {

                foreach ($entries['cache_list'] as $entry) {

                    $keys[] = $entry['name'];

                }

            }

        }

        return $keys;

    }

    /**

     * {@inheritdoc}

     */

    protected function _doFetch($id)

    {

        return $this->_doContains($id) ? unserialize(xcache_get($id)) : false;

    }

    /**

     * {@inheritdoc}

     */

    protected function _doContains($id)

    {

        return xcache_isset($id);

    }

    /**

     * {@inheritdoc}

     */

    protected function _doSave($id, $data, $lifeTime = 0)

    {

        return xcache_set($id, serialize($data), (int) $lifeTime);

    }

    /**

     * {@inheritdoc}

     */

    protected function _doDelete($id)

    {

        return xcache_unset($id);

    }

    /**

     * Checks that xcache.admin.enable_auth is Off

     *

     * @throws \BadMethodCallException When xcache.admin.enable_auth is On

     * @return void

     */

    protected function _checkAuth()

    {

        if (ini_get('xcache.admin.enable_auth')) {

            throw new \BadMethodCallException('To use all features of \Doctrine\Common\Cache\XcacheCache, you must set "xcache.admin.enable_auth" to "Off" in your php.ini.');

        }

    }

}