/cake/libs/view/helpers/cache.php
PHP | 261 lines | 162 code | 22 blank | 77 comment | 35 complexity | 6b98dd05eb81a2af94838d7cb276f0d6 MD5 | raw file
- <?php
- /**
- * CacheHelper helps create full page view caching.
- *
- * PHP versions 4 and 5
- *
- * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
- * Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
- *
- * Licensed under The MIT License
- * Redistributions of files must retain the above copyright notice.
- *
- * @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
- * @link http://cakephp.org CakePHP(tm) Project
- * @package cake
- * @subpackage cake.cake.libs.view.helpers
- * @since CakePHP(tm) v 1.0.0.2277
- * @license MIT License (http://www.opensource.org/licenses/mit-license.php)
- */
- /**
- * CacheHelper helps create full page view caching.
- *
- * When using CacheHelper you don't call any of its methods, they are all automatically
- * called by View, and use the $cacheAction settings set in the controller.
- *
- * @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();
- /**
- * 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 $cache Whether or not a cache file should be written.
- * @return string view ouput
- */
- function cache($file, $out, $cache = false) {
- $cacheTime = 0;
- $useCallbacks = false;
- if (is_array($this->cacheAction)) {
- $keys = array_keys($this->cacheAction);
- $index = null;
- foreach ($keys as $action) {
- if ($action == $this->params['action']) {
- $index = $action;
- break;
- }
- }
- if (!isset($index) && $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 (isset($options['duration'])) {
- $cacheTime = $options['duration'];
- }
- if (isset($options['callbacks'])) {
- $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 The filename that needs to be parsed.
- * @param string $cache The cached content
- * @access private
- */
- function __parseFile($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, $outputResult, PREG_PATTERN_ORDER);
- preg_match_all('/(?<=<cake:nocache>)([\\s\\S]*?)(?=<\/cake:nocache>)/i', $file, $fileResult, PREG_PATTERN_ORDER);
- $fileResult = $fileResult[0];
- $outputResult = $outputResult[0];
- if (!empty($this->__replace)) {
- foreach ($outputResult as $i => $element) {
- $index = array_search($element, $this->__match);
- if ($index !== false) {
- unset($outputResult[$i]);
- }
- }
- $outputResult = array_values($outputResult);
- }
- if (!empty($fileResult)) {
- $i = 0;
- foreach ($fileResult as $cacheBlock) {
- if (isset($outputResult[$i])) {
- $this->__replace[] = $cacheBlock;
- $this->__match[] = $outputResult[$i];
- }
- $i++;
- }
- }
- }
- /**
- * Parse the output and replace cache tags
- *
- * @param string $cache Output to replace content in.
- * @return string with all replacements made to <cake:nocache><cake:nocache>
- * @access private
- */
- function __parseOutput($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 $content view content to write to a cache file.
- * @param sting $timestamp Duration to set for cache file.
- * @return boolean success of caching view.
- * @access private
- */
- function __writeFile($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->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->theme = $this->theme = \'' . $this->theme . '\';
- Router::setRequestInfo(array($this->params, array(\'base\' => $this->base, \'webroot\' => $this->webroot)));';
- if ($useCallbacks == true) {
- $file .= '
- $controller->constructClasses();
- $controller->Component->initialize($controller);
- $controller->beforeFilter();
- $controller->Component->startup($controller);';
- }
- $file .= '
- $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};
- $this->{$helper} =& $loadedHelpers[$helper];
- }
- ?>';
- $content = preg_replace("/(<\\?xml)/", "<?php echo '$1';?>",$content);
- $file .= $content;
- return cache('views' . DS . $cache, $file, $timestamp);
- }
- }
- ?>