david
28b02db2ea
git-svn-id: https://192.168.0.254/svn/Proyectos.Incam_SGD/tags/3.7.0.2_original@1 eb19766c-00d9-a042-a3a0-45cb8ec72764
293 lines
9.6 KiB
PHP
293 lines
9.6 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Cache
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* @subpackage Frontend
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* @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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/**
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* Zend_Cache_Core
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*/
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require_once 'Zend/Cache/Core.php';
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/**
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* @package Zend_Cache
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* @subpackage Frontend
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* @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Cache_Frontend_Page extends Zend_Cache_Core
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{
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/**
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* This frontend specific options
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*
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* ====> (boolean) httpConditional :
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* - if true, http conditional mode is on
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* WARNING : httpConditional OPTION IS NOT IMPLEMENTED FOR THE MOMENT (TODO)
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*
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* ====> (boolean) debugHeader :
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* - if true, a debug text is added before each cached pages
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*
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* ====> (array) defaultOptions :
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* - an associative array of default options :
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* - (boolean) cache : cache is on by default if true
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* - (boolean) cacheWithXXXVariables (XXXX = 'Get', 'Post', 'Session', 'Files' or 'Cookie') :
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* if true, cache is still on even if there are some variables in this superglobal array
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* if false, cache is off if there are some variables in this superglobal array
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* - (boolean) makeIdWithXXXVariables (XXXX = 'Get', 'Post', 'Session', 'Files' or 'Cookie') :
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* if true, we have to use the content of this superglobal array to make a cache id
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* if false, the cache id won't be dependent of the content of this superglobal array
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*
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* ====> (array) regexps :
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* - an associative array to set options only for some REQUEST_URI
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* - keys are (pcre) regexps
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* - values are associative array with specific options to set if the regexp matchs on $_SERVER['REQUEST_URI']
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* (see defaultOptions for the list of available options)
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* - if several regexps match the $_SERVER['REQUEST_URI'], only the last one will be used
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*
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* @var array options
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*/
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protected $_specificOptions = array(
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'httpConditional' => false,
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'debugHeader' => false,
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'defaultOptions' => array(
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'cacheWithGetVariables' => false,
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'cacheWithPostVariables' => false,
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'cacheWithSessionVariables' => false,
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'cacheWithFilesVariables' => false,
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'cacheWithCookieVariables' => false,
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'makeIdWithGetVariables' => true,
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'makeIdWithPostVariables' => true,
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'makeIdWithSessionVariables' => true,
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'makeIdWithFilesVariables' => true,
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'makeIdWithCookieVariables' => true,
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'cache' => true
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),
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'regexps' => array()
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);
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/**
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* Internal array to store some options
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*
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* @var array associative array of options
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*/
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protected $_activeOptions = array();
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/**
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* Constructor
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*
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* @param array $options associative array of options
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* @param boolean $doNotTestCacheValidity if set to true, the cache validity won't be tested
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*/
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public function __construct($options = array())
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{
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if (isset($options['httpConditional'])) {
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if ($options['httpConditional']) {
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Zend_Cache::throwException('httpConditional is not implemented for the moment !');
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}
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}
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while (list($name, $value) = each($options)) {
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switch ($name) {
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case 'regexps':
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$this->_setRegexps($value);
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break;
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case 'defaultOptions':
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$this->_setDefaultOptions($value);
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break;
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default:
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$this->setOption($name, $value);
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}
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}
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}
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/**
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* Specific setter for the 'defaultOptions' option (with some additional tests)
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*
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* @param array $options associative array
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*/
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protected function _setDefaultOptions($options)
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{
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if (!is_array($options)) {
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Zend_Cache::throwException('defaultOptions must be an array !');
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}
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foreach ($options as $key=>$value) {
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if (!isset($this->_specificOptions['defaultOptions'][$key])) {
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Zend_Cache::throwException("unknown option [$key] !");
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} else {
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$this->_specificOptions['defaultOptions'][$key] = $value;
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}
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}
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}
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/**
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* Specific setter for the 'regexps' option (with some additional tests)
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*
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* @param array $options associative array
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*/
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protected function _setRegexps($regexps)
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{
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if (!is_array($regexps)) {
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Zend_Cache::throwException('regexps option must be an array !');
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}
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foreach ($regexps as $regexp=>$conf) {
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if (!is_array($conf)) {
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Zend_Cache::throwException('regexps option must be an array of arrays !');
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}
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$validKeys = array_keys($this->_specificOptions['defaultOptions']);
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foreach ($conf as $key=>$value) {
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if (!in_array($key, $validKeys)) {
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Zend_Cache::throwException("unknown option [$key] !");
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}
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}
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}
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$this->setOption('regexps', $regexps);
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}
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/**
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* Start the cache
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*
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* @param string $id (optional) a cache id (if you set a value here, maybe you have to use Output frontend instead)
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* @param boolean $doNotDie for unit testing only !
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* @return boolean true if the cache is hit (false else)
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*/
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public function start($id = false, $doNotDie = false)
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{
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$lastMatchingRegexp = null;
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foreach ($this->_specificOptions['regexps'] as $regexp => $conf) {
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if (preg_match("`$regexp`", $_SERVER['REQUEST_URI'])) {
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$lastMatchingRegexp = $regexp;
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}
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}
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$this->_activeOptions = $this->_specificOptions['defaultOptions'];
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if (!is_null($lastMatchingRegexp)) {
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$conf = $this->_specificOptions['regexps'][$lastMatchingRegexp];
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foreach ($conf as $key=>$value) {
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$this->_activeOptions[$key] = $value;
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}
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}
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if (!($this->_activeOptions['cache'])) {
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return false;
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}
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if (!$id) {
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$id = $this->_makeId();
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if (!$id) {
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return false;
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}
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}
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$data = $this->load($id);
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if ($data !== false) {
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if ($this->_specificOptions['debugHeader']) {
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echo 'DEBUG HEADER : This is a cached page !';
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}
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echo $data;
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if ($doNotDie) {
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return true;
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}
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die();
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}
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ob_start(array($this, '_flush'));
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ob_implicit_flush(false);
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return false;
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}
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/**
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* callback for output buffering
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* (shouldn't really be called manually)
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*
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* @param string $data buffered output
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* @return string data to send to browser
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*/
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public function _flush($data)
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{
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$this->save($data);
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return $data;
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}
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/**
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* Make an id depending on REQUEST_URI and superglobal arrays (depending on options)
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*
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* @return mixed a cache id (string), false if the cache should have not to be used
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*/
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private function _makeId()
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{
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$tmp = $_SERVER['REQUEST_URI'];
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foreach (array('Get', 'Post', 'Session', 'Files', 'Cookie') as $arrayName) {
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$tmp2 = $this->_makePartialId($arrayName, $this->_activeOptions['cacheWith' . $arrayName . 'Variables'], $this->_activeOptions['makeIdWith' . $arrayName . 'Variables']);
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if ($tmp2===false) {
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return false;
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}
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$tmp = $tmp . $tmp2;
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}
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return md5($tmp);
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}
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/**
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* Make a partial id depending on options
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*
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* @var string $arrayName superglobal array name
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* @var $bool1 if true, cache is still on even if there are some variables in the superglobal array
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* @var $bool2 if true, we have to use the content of the superglobal array to make a partial id
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* @return mixed partial id (string) or false if the cache should have not to be used
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*/
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private function _makePartialId($arrayName, $bool1, $bool2)
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{
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switch ($arrayName) {
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case 'Get':
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$var = $_GET;
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break;
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case 'Post':
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$var = $_POST;
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break;
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case 'Session':
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if (isset($_SESSION)) {
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$var = $_SESSION;
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} else {
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$var = null;
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}
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break;
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case 'Cookie':
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if (isset($_COOKIE)) {
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$var = $_COOKIE;
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} else {
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$var = null;
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}
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break;
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case 'Files':
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$var = $_FILES;
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break;
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default:
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return false;
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}
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if ($bool1) {
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if ($bool2) {
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return serialize($var);
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}
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return '';
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}
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if (count($var) > 0) {
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return false;
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}
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return '';
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}
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}
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