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// +----------------------------------------------------------------------+
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2004 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 2.0 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available at through the world-wide-web at |
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// | http://www.php.net/license/2_02.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Authors: Ulf Wendel <ulf.wendel@phpdoc.de> |
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// | Sebastian Bergmann <sb@sebastian-bergmann.de> |
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// | Ian Eure <ieure@php.net> |
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// +----------------------------------------------------------------------+
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// $Id: trifile.php 6209 2008-08-26 15:30:39Z vargenau $
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require_once 'Cache/Container/file.php';
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* This cache container stores files with no special encoding to reduce overhead.
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* Expiration & user data are stored in seperate files, prefixed with a '.' and
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* suffixed with '.exp' & '.dat' respectively.
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* See http://atomized.org/PEAR/Cache_trifile.html for more information.
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* @author Ian Eure <ieure@php.net>
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class Cache_Container_trifile extends Cache_Container_file {
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* @param string $id Cache ID to fetch
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* @param string $group Group to fetch from
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* @return array 1-dimensional array in the format: expiration,data,userdata
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function fetch($id, $group)
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$file = $this->getFilename($id, $group);
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if (!file_exists($file))
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return array(NULL, NULL, NULL);
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file_get_contents($this->_getExpFile($file)),
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file_get_contents($file),
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file_get_contents($this->_getUDFile($file))
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* Get the file to store cache data in.
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* @return string Cache data file name
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function _getFile($file)
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$dir = dirname($file);
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$file = basename($file);
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return $dir.'/.'.$file;
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* Get the file to store expiration data in.
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* @return string Expiration data file name
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function _getExpFile($file)
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return $this->_getFile($file).'.exp';
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* Get the file to store user data in.
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* @return string User data file name
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function _getUDFile($file)
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return $this->_getFile($file).'.dat';
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* @param string $id Cache ID
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* @param mixed $cachedata Data to cache
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* @param mixed $expires When the data expires
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* @param string $group Cache group to store data in
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* @param mixed $userdata Additional data to store
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* @return boolean true on success, false otherwise
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function save($id, $cachedata, $expires, $group, $userdata)
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$this->flushPreload($id, $group);
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$file = $this->getFilename($id, $group);
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if (PEAR::isError($res = $this->_saveData($file, $cachedata))) {
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if (PEAR::isError($res = $this->_saveData($this->_getExpFile($file), $expires))) {
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if(PEAR::isError($res = $this->_saveData($this->_getUDFile($file), $userData))) {
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* Save data in a file
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* @param string $file File to save data in
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* @param string $data Data to save
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* @return mixed true on success, Cache_Error otherwise
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function _saveData($file, $data) {
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if (!($fh = @fopen($file, 'wb')))
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return new Cache_Error("Can't access '$file' to store cache data. Check access rights and path.", __FILE__, __LINE__);
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if ($this->fileLocking) {
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if($this->fileLocking) {
b'\\ No newline at end of file'