david
802479ed64
git-svn-id: https://192.168.0.254/svn/Proyectos.FundacionLQDVI_WebCongresos/trunk@2 94ccb1af-fd9d-d947-8d90-7f70ea60afc8
75 lines
2.5 KiB
PHP
75 lines
2.5 KiB
PHP
<?php
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/**
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* @package domit-xmlparser
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* @copyright (C) 2004 John Heinstein. All rights reserved
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License
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* @author John Heinstein <johnkarl@nbnet.nb.ca>
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* @link http://www.engageinteractive.com/domit/ DOMIT! Home Page
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* DOMIT! is Free Software
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**/
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/** Extension for cache files */
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define ('DOMIT_FILE_EXTENSION_CACHE', 'dch');
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/**
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* A simple caching mechanism for a DOMIT_Document
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*/
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class DOMIT_cache {
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/**
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* Serializes and caches the specified DOMIT! document
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* @param string The name of the xml file to be saved
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* @param Object A reference to the document to be saved
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* @param string The write attributes for the saved document ('w' or 'wb')
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*/
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function toCache($xmlFileName, &$doc, $writeAttributes = 'w') {
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require_once(DOMIT_INCLUDE_PATH . 'xml_domit_utilities.php');
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require_once(DOMIT_INCLUDE_PATH . 'php_file_utilities.php');
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$name = DOMIT_Utilities::removeExtension($xmlFileName) . '.' . DOMIT_FILE_EXTENSION_CACHE;
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php_file_utilities::putDataToFile($name, serialize($doc), $writeAttributes);
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return (file_exists($name) && is_writable($name));
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} //toCache
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/**
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* Unserializes a cached DOMIT! document
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* @param string The name of the xml file to be retrieved
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* @return Object The retrieved document
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*/
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function &fromCache($xmlFileName) {
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require_once(DOMIT_INCLUDE_PATH . 'xml_domit_utilities.php');
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require_once(DOMIT_INCLUDE_PATH . 'php_file_utilities.php');
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$name = DOMIT_Utilities::removeExtension($xmlFileName) . '.' . DOMIT_FILE_EXTENSION_CACHE;
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$fileContents =& php_file_utilities::getDataFromFile($name, 'r');
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$newxmldoc =& unserialize($fileContents);
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return $newxmldoc;
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} //fromCache
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/**
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* Determines whether a cached version of the specified document exists
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* @param string The name of the xml file to be retrieved
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* @return boolean True if a cache of the specified document exists
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*/
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function cacheExists($xmlFileName) {
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require_once(DOMIT_INCLUDE_PATH . 'xml_domit_utilities.php');
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$name = DOMIT_Utilities::removeExtension($xmlFileName) . '.' . DOMIT_FILE_EXTENSION_CACHE;
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return file_exists($name);
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} //xmlFileName
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/**
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* Removes a cache of the specified document
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* @param string The name of the xml file to be retrieved
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* @return boolean True if a cache has been removed
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*/
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function removeFromCache($xmlFileName) {
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require_once(DOMIT_INCLUDE_PATH . 'xml_domit_utilities.php');
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$name = DOMIT_Utilities::removeExtension($xmlFileName) . '.' . DOMIT_FILE_EXTENSION_CACHE;
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return unlink($name);
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} //removeFromCache
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} //DOMIT_cache
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?>
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