WebSVN – lars-tiefland.cakephp – /cake/libs/view/helpers/cache.php

<?php
/* SVN FILE: $Id: cache.php 7945 2008-12-19 02:16:01Z gwoo $ */
/**
 * Short description for file.
 *
 * Long description for file
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 * @link          http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
 * @package       cake
 * @subpackage    cake.cake.libs.view.helpers
 * @since         CakePHP(tm) v 1.0.0.2277
 * @version       $Revision: 7945 $
 * @modifiedby    $LastChangedBy: gwoo $
 * @lastmodified  $Date: 2008-12-18 18:16:01 -0800 (Thu, 18 Dec 2008) $
 * @license       http://www.opensource.org/licenses/mit-license.php The MIT License
 */
/**
 * Short description for file.
 *
 * Long description for file
 *
 * @package       cake
 * @subpackage    cake.cake.libs.view.helpers
 */
class CacheHelper extends AppHelper {
/**
 * Array of strings replaced in cached views.
 * The strings are found between <cake:nocache><cake:nocache> in views
 *
 * @var array
 * @access private
 */
        var $__replace = array();
/**
 * Array of string that are replace with there var replace above.
 * The strings are any content inside <cake:nocache><cake:nocache> and includes the tags in views
 *
 * @var array
 * @access private
 */
        var $__match = array();
/**
 * holds the View object passed in final call to CacheHelper::cache()
 *
 * @var object
 * @access public
 */
        var $view;
/**
 * cache action time
 *
 * @var object
 * @access public
 */
        var $cacheAction;
/**
 * Main method used to cache a view
 *
 * @param string $file File to cache
 * @param string $out output to cache
 * @param boolean $cache
 * @return view ouput
 */
        function cache($file, $out, $cache = false) {
                $cacheTime = 0;
                $useCallbacks = false;
                if (is_array($this->cacheAction)) {
                        $contoller = Inflector::underscore($this->controllerName);
                        $check = str_replace('/', '_', $this->here);
                        $replace = str_replace('/', '_', $this->base);
                        $match = str_replace($this->base, '', $this->here);
                        $match = str_replace('//', '/', $match);
                        $match = str_replace('/' . $contoller . '/', '', $match);
                        $match = str_replace('/' . $this->controllerName . '/', '', $match);
                        $check = str_replace($replace, '', $check);
                        $check = str_replace('_' . $contoller . '_', '', $check);
                        $check = str_replace('_' . $this->controllerName . '_', '', $check);
                        $check = Inflector::slug($check);
                        $check = preg_replace('/^_+/', '', $check);
                        $keys = str_replace('/', '_', array_keys($this->cacheAction));
                        $found = array_keys($this->cacheAction);
                        $index = null;
                        $count = 0;

                        foreach ($keys as $key => $value) {
                                if (strpos($check, $value) === 0) {
                                        $index = $found[$count];
                                        break;
                                }
                                $count++;
                        }

                        if (isset($index)) {
                                $pos1 = strrpos($match, '/');
                                $char = strlen($match) - 1;

                                if ($pos1 == $char) {
                                        $match = substr($match, 0, $char);
                                }

                                $key = $match;
                        } elseif ($this->action == 'index') {
                                $index = 'index';
                        }

                        $options = $this->cacheAction;
                        if (isset($this->cacheAction[$index])) {
                                if (is_array($this->cacheAction[$index])) {
                                        $options = array_merge(array('duration'=> 0, 'callbacks' => false), $this->cacheAction[$index]);
                                } else {
                                        $cacheTime = $this->cacheAction[$index];
                                }
                        }

                        if (array_key_exists('duration', $options)) {
                                $cacheTime = $options['duration'];
                        }
                        if (array_key_exists('callbacks', $options)) {
                                $useCallbacks = $options['callbacks'];
                        }

                } else {
                        $cacheTime = $this->cacheAction;
                }

                if ($cacheTime != '' && $cacheTime > 0) {
                        $this->__parseFile($file, $out);
                        if ($cache === true) {
                                $cached = $this->__parseOutput($out);
                                $this->__writeFile($cached, $cacheTime, $useCallbacks);
                        }
                        return $out;
                } else {
                        return $out;
                }
        }
/**
 * Parse file searching for no cache tags
 *
 * @param string $file
 * @param boolean $cache
 * @access private
 */
        function __parseFile($file, $cache) {
                if (is_file($file)) {
                        $file = file_get_contents($file);
                } elseif ($file = fileExistsInPath($file)) {
                        $file = file_get_contents($file);
                }

                preg_match_all('/(<cake:nocache>(?<=<cake:nocache>)[\\s\\S]*?(?=<\/cake:nocache>)<\/cake:nocache>)/i', $cache, $oresult, PREG_PATTERN_ORDER);
                preg_match_all('/(?<=<cake:nocache>)([\\s\\S]*?)(?=<\/cake:nocache>)/i', $file, $result, PREG_PATTERN_ORDER);

                if (!empty($this->__replace)) {
                        foreach ($oresult['0'] as $k => $element) {
                                $index = array_search($element, $this->__match);
                                if ($index !== false) {
                                        array_splice($oresult[0], $k, 1);
                                }
                        }
                }

                if (!empty($result['0'])) {
                        $count = 0;
                        foreach ($result['0'] as $block) {
                                if (isset($oresult['0'][$count])) {
                                        $this->__replace[] = $block;
                                        $this->__match[] = $oresult['0'][$count];
                                }
                                $count++;
                        }
                }
        }
/**
 * Parse the output and replace cache tags
 *
 * @param sting $cache
 * @return string with all replacements made to <cake:nocache><cake:nocache>
 * @access private
 */
        function __parseOutput($cache) {
                $count = 0;
                if (!empty($this->__match)) {

                        foreach ($this->__match as $found) {
                                $original = $cache;
                                $length = strlen($found);
                                $position = 0;

                                        for ($i = 1; $i <= 1; $i++) {
                                                $position = strpos($cache, $found, $position);

                                                if ($position !== false) {
                                                        $cache = substr($original, 0, $position);
                                                        $cache .= $this->__replace[$count];
                                                        $cache .= substr($original, $position + $length);
                                                } else {
                                                        break;
                                                }
                                        }
                                        $count++;
                        }
                        return $cache;
                }
                return $cache;
        }
/**
 * Write a cached version of the file
 *
 * @param string $file
 * @param sting $timestamp
 * @return cached view
 * @access private
 */
        function __writeFile($content, $timestamp, $useCallbacks = false) {
                $now = time();

                if (is_numeric($timestamp)) {
                        $cacheTime = $now + $timestamp;
                } else {
                        $cacheTime = strtotime($timestamp, $now);
                }
                $path = $this->here;
                if ($this->here == '/') {
                        $path = 'home';
                }
                $cache = strtolower(Inflector::slug($path));

                if (empty($cache)) {
                        return;
                }
                $cache = $cache . '.php';
                $file = '<!--cachetime:' . $cacheTime . '--><?php';

                if (empty($this->plugin)) {
                        $file .= '
                        App::import(\'Controller\', \'' . $this->controllerName. '\');
                        ';
                } else {
                        $file .= '
                        App::import(\'Controller\', \'' . $this->plugin . '.' . $this->controllerName. '\');
                        ';
                }

                $file .= '$controller =& new ' . $this->controllerName . 'Controller();
                                $controller->plugin = $this->plugin = \''.$this->plugin.'\';
                                $controller->helpers = $this->helpers = unserialize(\'' . serialize($this->helpers) . '\');
                                $controller->base = $this->base = \'' . $this->base . '\';
                                $controller->layout = $this->layout = \'' . $this->layout. '\';
                                $controller->webroot = $this->webroot = \'' . $this->webroot . '\';
                                $controller->here = $this->here = \'' . $this->here . '\';
                                $controller->namedArgs  = $this->namedArgs  = \'' . $this->namedArgs . '\';
                                $controller->argSeparator = $this->argSeparator = \'' . $this->argSeparator . '\';
                                $controller->params = $this->params = unserialize(stripslashes(\'' . addslashes(serialize($this->params)) . '\'));
                                $controller->action = $this->action = unserialize(\'' . serialize($this->action) . '\');
                                $controller->data = $this->data = unserialize(stripslashes(\'' . addslashes(serialize($this->data)) . '\'));
                                $controller->themeWeb = $this->themeWeb = \'' . $this->themeWeb . '\';';

                if ($useCallbacks == true) {
                        $file .= '
                                $controller->constructClasses();
                                $controller->Component->initialize($controller);
                                $controller->beforeFilter();
                                $controller->Component->startup($controller);';
                }

                $file .= '
                                Router::setRequestInfo(array($this->params, array(\'base\' => $this->base, \'webroot\' => $this->webroot)));
                                $loadedHelpers = array();
                                $loadedHelpers = $this->_loadHelpers($loadedHelpers, $this->helpers);
                                foreach (array_keys($loadedHelpers) as $helper) {
                                        $camelBackedHelper = Inflector::variable($helper);
                                        ${$camelBackedHelper} =& $loadedHelpers[$helper];
                                        $this->loaded[$camelBackedHelper] =& ${$camelBackedHelper};
                                }
                ?>';
                $content = preg_replace("/(<\\?xml)/", "<?php echo '$1';?>",$content);
                $file .= $content;
                return cache('views' . DS . $cache, $file, $timestamp);
        }
}

?>
Subversion-Projekte lars-tiefland.cakephp

(root)/cake/libs/view/helpers/cache.php @ 4 – Revision 1
