[pLog-svn] r1695 - in plog/branches/plog-1.1-ben/class: . cache
cache/Cache_Lite
ork at devel.plogworld.net
ork at devel.plogworld.net
Mon Apr 4 16:25:27 GMT 2005
Author: ork
Date: 2005-04-04 16:25:26 +0000 (Mon, 04 Apr 2005)
New Revision: 1695
Added:
plog/branches/plog-1.1-ben/class/cache/
plog/branches/plog-1.1-ben/class/cache/Cache_Lite/
plog/branches/plog-1.1-ben/class/cache/Cache_Lite/Lite.php
plog/branches/plog-1.1-ben/class/cache/cache.class.php
plog/branches/plog-1.1-ben/class/cache/cachemanager.class.php
Log:
added a cachemanager :)
Added: plog/branches/plog-1.1-ben/class/cache/Cache_Lite/Lite.php
===================================================================
--- plog/branches/plog-1.1-ben/class/cache/Cache_Lite/Lite.php 2005-04-04 16:06:34 UTC (rev 1694)
+++ plog/branches/plog-1.1-ben/class/cache/Cache_Lite/Lite.php 2005-04-04 16:25:26 UTC (rev 1695)
@@ -0,0 +1,736 @@
+<?php
+
+/**
+* Fast, light and safe Cache Class
+*
+* Cache_Lite is a fast, light and safe cache system. It's optimized
+* for file containers. It is fast and safe (because it uses file
+* locking and/or anti-corruption tests).
+*
+* There are some examples in the 'docs/examples' file
+* Technical choices are described in the 'docs/technical' file
+*
+* A tutorial is available in english at this url :
+* http://www.pearfr.org/index.php/en/article/cache_lite
+* (big thanks to Pierre-Alain Joye for the translation)
+*
+* The same tutorial is also available in french at this url :
+* http://www.pearfr.org/index.php/fr/article/cache_lite
+*
+* Memory Caching is from an original idea of
+* Mike BENOIT <ipso at snappymail.ca>
+*
+* @package Cache_Lite
+* @category Caching
+* @version $Id: Lite.php,v 1.23 2005/02/27 18:24:28 fab Exp $
+* @author Fabien MARTY <fab at php.net>
+*/
+
+define('CACHE_LITE_ERROR_RETURN', 1);
+define('CACHE_LITE_ERROR_DIE', 8);
+
+class Cache_Lite
+{
+
+ // --- Private properties ---
+
+ /**
+ * Directory where to put the cache files
+ * (make sure to add a trailing slash)
+ *
+ * @var string $_cacheDir
+ */
+ var $_cacheDir = '/tmp/';
+
+ /**
+ * Enable / disable caching
+ *
+ * (can be very usefull for the debug of cached scripts)
+ *
+ * @var boolean $_caching
+ */
+ var $_caching = true;
+
+ /**
+ * Cache lifetime (in seconds)
+ *
+ * @var int $_lifeTime
+ */
+ var $_lifeTime = 3600;
+
+ /**
+ * Enable / disable fileLocking
+ *
+ * (can avoid cache corruption under bad circumstances)
+ *
+ * @var boolean $_fileLocking
+ */
+ var $_fileLocking = true;
+
+ /**
+ * Timestamp of the last valid cache
+ *
+ * @var int $_refreshTime
+ */
+ var $_refreshTime;
+
+ /**
+ * File name (with path)
+ *
+ * @var string $_file
+ */
+ var $_file;
+
+ /**
+ * File name (without path)
+ *
+ * @var string $_fileName
+ */
+ var $_fileName;
+
+ /**
+ * Enable / disable write control (the cache is read just after writing to detect corrupt entries)
+ *
+ * Enable write control will lightly slow the cache writing but not the cache reading
+ * Write control can detect some corrupt cache files but maybe it's not a perfect control
+ *
+ * @var boolean $_writeControl
+ */
+ var $_writeControl = true;
+
+ /**
+ * Enable / disable read control
+ *
+ * If enabled, a control key is embeded in cache file and this key is compared with the one
+ * calculated after the reading.
+ *
+ * @var boolean $_writeControl
+ */
+ var $_readControl = true;
+
+ /**
+ * Type of read control (only if read control is enabled)
+ *
+ * Available values are :
+ * 'md5' for a md5 hash control (best but slowest)
+ * 'crc32' for a crc32 hash control (lightly less safe but faster, better choice)
+ * 'strlen' for a length only test (fastest)
+ *
+ * @var boolean $_readControlType
+ */
+ var $_readControlType = 'crc32';
+
+ /**
+ * Pear error mode (when raiseError is called)
+ *
+ * (see PEAR doc)
+ *
+ * @see setToDebug()
+ * @var int $_pearErrorMode
+ */
+ var $_pearErrorMode = CACHE_LITE_ERROR_RETURN;
+
+ /**
+ * Current cache id
+ *
+ * @var string $_id
+ */
+ var $_id;
+
+ /**
+ * Current cache group
+ *
+ * @var string $_group
+ */
+ var $_group;
+
+ /**
+ * Enable / Disable "Memory Caching"
+ *
+ * NB : There is no lifetime for memory caching !
+ *
+ * @var boolean $_memoryCaching
+ */
+ var $_memoryCaching = false;
+
+ /**
+ * Enable / Disable "Only Memory Caching"
+ * (be carefull, memory caching is "beta quality")
+ *
+ * @var boolean $_onlyMemoryCaching
+ */
+ var $_onlyMemoryCaching = false;
+
+ /**
+ * Memory caching array
+ *
+ * @var array $_memoryCachingArray
+ */
+ var $_memoryCachingArray = array();
+
+ /**
+ * Memory caching counter
+ *
+ * @var int $memoryCachingCounter
+ */
+ var $_memoryCachingCounter = 0;
+
+ /**
+ * Memory caching limit
+ *
+ * @var int $memoryCachingLimit
+ */
+ var $_memoryCachingLimit = 1000;
+
+ /**
+ * File Name protection
+ *
+ * if set to true, you can use any cache id or group name
+ * if set to false, it can be faster but cache ids and group names
+ * will be used directly in cache file names so be carefull with
+ * special characters...
+ *
+ * @var boolean $fileNameProtection
+ */
+ var $_fileNameProtection = true;
+
+ /**
+ * Enable / disable automatic serialization
+ *
+ * it can be used to save directly datas which aren't strings
+ * (but it's slower)
+ *
+ * @var boolean $_serialize
+ */
+ var $_automaticSerialization = false;
+
+ /**
+ * Disable / Tune the automatic cleaning process
+ *
+ * The automatic cleaning process destroy too old (for the given life time)
+ * cache files when a new cache file is written.
+ * 0 => no automatic cache cleaning
+ * 1 => systematic cache cleaning
+ * x (integer) > 1 => automatic cleaning randomly 1 times on x cache write
+ *
+ * @var int $_automaticCleaning
+ */
+ var $_automaticCleaningFactor = 0;
+
+ /**
+ * Nested directory level
+ *
+ *
+ * @var int $_hashedDirectoryLevel
+ */
+ var $_hashedDirectoryLevel = 0;
+
+ // --- Public methods ---
+
+ /**
+ * Constructor
+ *
+ * $options is an assoc. Available options are :
+ * $options = array(
+ * 'cacheDir' => directory where to put the cache files (string),
+ * 'caching' => enable / disable caching (boolean),
+ * 'lifeTime' => cache lifetime in seconds (int),
+ * 'fileLocking' => enable / disable fileLocking (boolean),
+ * 'writeControl' => enable / disable write control (boolean),
+ * 'readControl' => enable / disable read control (boolean),
+ * 'readControlType' => type of read control 'crc32', 'md5', 'strlen' (string),
+ * 'pearErrorMode' => pear error mode (when raiseError is called) (cf PEAR doc) (int),
+ * 'memoryCaching' => enable / disable memory caching (boolean),
+ * 'onlyMemoryCaching' => enable / disable only memory caching (boolean),
+ * 'memoryCachingLimit' => max nbr of records to store into memory caching (int),
+ * 'fileNameProtection' => enable / disable automatic file name protection (boolean),
+ * 'automaticSerialization' => enable / disable automatic serialization (boolean)
+ * 'automaticCleaningFactor' => distable / tune automatic cleaning process (int)
+ * 'hashedDirectoryLevel' => level of the hashed directory system (int)
+ * );
+ *
+ * @param array $options options
+ * @access public
+ */
+ function Cache_Lite($options = array(NULL))
+ {
+ $availableOptions = array('hashedDirectoryLevel', 'automaticCleaningFactor', 'automaticSerialization', 'fileNameProtection', 'memoryCaching', 'onlyMemoryCaching', 'memoryCachingLimit', 'cacheDir', 'caching', 'lifeTime', 'fileLocking', 'writeControl', 'readControl', 'readControlType', 'pearErrorMode');
+ foreach($options as $key => $value) {
+ if(in_array($key, $availableOptions)) {
+ $property = '_'.$key;
+ $this->$property = $value;
+ }
+ }
+ $this->_refreshTime = time() - $this->_lifeTime;
+ }
+
+ /**
+ * Test if a cache is available and (if yes) return it
+ *
+ * @param string $id cache id
+ * @param string $group name of the cache group
+ * @param boolean $doNotTestCacheValidity if set to true, the cache validity won't be tested
+ * @return string data of the cache (or false if no cache available)
+ * @access public
+ */
+ function get($id, $group = 'default', $doNotTestCacheValidity = false)
+ {
+ $this->_id = $id;
+ $this->_group = $group;
+ $data = false;
+ if ($this->_caching) {
+ $this->_setFileName($id, $group);
+// TBD: we won't have memory caching at all ..
+// if ($this->_memoryCaching) {
+// if (isset($this->_memoryCachingArray[$this->_file])) {
+// if ($this->_automaticSerialization) {
+// return unserialize($this->_memoryCachingArray[$this->_file]);
+// } else {
+// return $this->_memoryCachingArray[$this->_file];
+// }
+// } else {
+// if ($this->_onlyMemoryCaching) {
+// return false;
+// }
+// }
+// }
+ if ($doNotTestCacheValidity) {
+ if (file_exists($this->_file)) {
+ $data = $this->_read();
+ }
+ } else {
+ if ((file_exists($this->_file)) && (@filemtime($this->_file) > $this->_refreshTime)) {
+ $data = $this->_read();
+ }
+ }
+// if (($data) and ($this->_memoryCaching)) {
+// $this->_memoryCacheAdd($this->_file, $data);
+// }
+ if (($this->_automaticSerialization) and (is_string($data))) {
+ $data = unserialize($data);
+ }
+ return $data;
+ }
+ return false;
+ }
+
+ /**
+ * Save some data in a cache file
+ *
+ * @param string $data data to put in cache (can be another type than strings if automaticSerialization is on)
+ * @param string $id cache id
+ * @param string $group name of the cache group
+ * @return boolean true if no problem
+ * @access public
+ */
+ function save($data, $id = NULL, $group = 'default')
+ {
+ if ($this->_caching) {
+ if ($this->_automaticSerialization) {
+ $data = serialize($data);
+ }
+ if (isset($id)) {
+ $this->_setFileName($id, $group);
+ }
+// TBD: we won't have memory caching at all..
+// if ($this->_memoryCaching) {
+// $this->_memoryCacheAdd($this->_file, $data);
+// if ($this->_onlyMemoryCaching) {
+// return true;
+// }
+// }
+ if ($this->_automaticCleaningFactor>0) {
+ $rand = rand(1, $this->_automaticCleaningFactor);
+ if ($rand==1) {
+ $this->clean(false, 'old');
+ }
+ }
+ if ($this->_writeControl) {
+ if (!$this->_writeAndControl($data)) {
+ @touch($this->_file, time() - 2*abs($this->_lifeTime));
+ return false;
+ } else {
+ return true;
+ }
+ } else {
+ return $this->_write($data);
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Remove a cache file
+ *
+ * @param string $id cache id
+ * @param string $group name of the cache group
+ * @return boolean true if no problem
+ * @access public
+ */
+ function remove($id, $group = 'default')
+ {
+ $this->_setFileName($id, $group);
+// TBD: we won't have memory caching at all..
+// if ($this->_memoryCaching) {
+// if (isset($this->_memoryCachingArray[$this->_file])) {
+// unset($this->_memoryCachingArray[$this->_file]);
+// $this->_memoryCachingCounter = $this->_memoryCachingCounter - 1;
+// }
+// if ($this->_onlyMemoryCaching) {
+// return true;
+// }
+// }
+ return $this->_unlink($this->_file);
+ }
+
+ /**
+ * Clean the cache
+ *
+ * if no group is specified all cache files will be destroyed
+ * else only cache files of the specified group will be destroyed
+ *
+ * @param string $group name of the cache group
+ * @param string $mode flush cache mode : 'old', 'ingroup', 'notingroup'
+ * @return boolean true if no problem
+ * @access public
+ */
+ function clean($group = false, $mode = 'ingroup')
+ {
+ return $this->_cleanDir($this->_cacheDir, $group, $mode);
+ }
+
+ /**
+ * Set to debug mode
+ *
+ * When an error is found, the script will stop and the message will be displayed
+ * (in debug mode only).
+ *
+ * @access public
+ */
+ function setToDebug()
+ {
+ $this->_pearErrorMode = CACHE_LITE_ERROR_DIE;
+ }
+
+ /**
+ * Set a new life time
+ *
+ * @param int $newLifeTime new life time (in seconds)
+ * @access public
+ */
+ function setLifeTime($newLifeTime)
+ {
+ $this->_lifeTime = $newLifeTime;
+ $this->_refreshTime = time() - $newLifeTime;
+ }
+
+ /**
+ * Save the state of the caching memory array into a cache file cache
+ *
+ * @param string $id cache id
+ * @param string $group name of the cache group
+ * @access public
+ */
+ function saveMemoryCachingState($id, $group = 'default')
+ {
+ if ($this->_caching) {
+ $array = array(
+ 'counter' => $this->_memoryCachingCounter,
+ 'array' => $this->_memoryCachingState
+ );
+ $data = serialize($array);
+ $this->save($data, $id, $group);
+ }
+ }
+
+ /**
+ * Load the state of the caching memory array from a given cache file cache
+ *
+ * @param string $id cache id
+ * @param string $group name of the cache group
+ * @param boolean $doNotTestCacheValidity if set to true, the cache validity won't be tested
+ * @access public
+ */
+ function getMemoryCachingState($id, $group = 'default', $doNotTestCacheValidity = false)
+ {
+ if ($this->_caching) {
+ if ($data = $this->get($id, $group, $doNotTestCacheValidity)) {
+ $array = unserialize($data);
+ $this->_memoryCachingCounter = $array['counter'];
+ $this->_memoryCachingArray = $array['array'];
+ }
+ }
+ }
+
+ /**
+ * Return the cache last modification time
+ *
+ * BE CAREFUL : THIS METHOD IS FOR HACKING ONLY !
+ *
+ * @return int last modification time
+ */
+ function lastModified() {
+ return filemtime($this->_file);
+ }
+
+ /**
+ * Trigger a PEAR error
+ *
+ * To improve performances, the PEAR.php file is included dynamically.
+ * The file is so included only when an error is triggered. So, in most
+ * cases, the file isn't included and perfs are much better.
+ *
+ * @param string $msg error message
+ * @param int $code error code
+ * @access public
+ */
+ function raiseError($msg, $code)
+ {
+ include_once('PEAR.php');
+ PEAR::raiseError($msg, $code, $this->_pearErrorMode);
+ }
+
+ // --- Private methods ---
+
+ /**
+ * Remove a file
+ *
+ * @param string $file complete file path and name
+ * @return boolean true if no problem
+ * @access private
+ */
+ function _unlink($file)
+ {
+ if (file_exists($file) && !@unlink($file)) {
+ $this->raiseError('Cache_Lite : Unable to remove cache !', -3);
+ return false;
+ } else {
+ return true;
+ }
+ }
+
+ /**
+ * Recursive function for cleaning cache file in the given directory
+ *
+ * @param string $dir directory complete path (with a trailing slash)
+ * @param string $group name of the cache group
+ * @param string $mode flush cache mode : 'old', 'ingroup', 'notingroup'
+ * @return boolean true if no problem
+ * @access private
+ */
+ function _cleanDir($dir, $group = false, $mode = 'ingroup')
+ {
+ if ($this->_fileNameProtection) {
+ $motif = ($group) ? 'cache_'.md5($group).'_' : 'cache_';
+ } else {
+ $motif = ($group) ? 'cache_'.$group.'_' : 'cache_';
+ }
+ if ($this->_memoryCaching) {
+ while (list($key, $value) = each($this->_memoryCachingArray)) {
+ if (strpos($key, $motif, 0)) {
+ unset($this->_memoryCachingArray[$key]);
+ $this->_memoryCachingCounter = $this->_memoryCachingCounter - 1;
+ }
+ }
+ if ($this->_onlyMemoryCaching) {
+ return true;
+ }
+ }
+ if (!($dh = opendir($dir))) {
+ $this->raiseError('Cache_Lite : Unable to open cache directory !', -4);
+ return false;
+ }
+ $result = true;
+ while ($file = readdir($dh)) {
+ if (($file != '.') && ($file != '..')) {
+ if (substr($file, 0, 6)=='cache_') {
+ $file2 = $dir . $file;
+ if (is_file($file2)) {
+ switch ($mode) {
+ case 'old':
+ // files older than lifeTime get deleted from cache
+ if ((mktime() - filemtime($file2)) > $this->_lifeTime) {
+ $result = ($result and ($this->_unlink($file2)));
+ }
+ break;
+ case 'notingroup':
+ if (!strpos($file2, $motif, 0)) {
+ $result = ($result and ($this->_unlink($file2)));
+ }
+ break;
+ case 'ingroup':
+ default:
+ if (strpos($file2, $motif, 0)) {
+ $result = ($result and ($this->_unlink($file2)));
+ }
+ break;
+ }
+ }
+ if ((is_dir($file2)) and ($this->_hashedDirectoryLevel>0)) {
+ $result = ($result and ($this->_cleanDir($file2 . '/', $group, $mode)));
+ }
+ }
+ }
+ }
+ return $result;
+ }
+
+ /**
+ * Add some date in the memory caching array
+ *
+ * @param string $id cache id
+ * @param string $data data to cache
+ * @access private
+ */
+ function _memoryCacheAdd($id, $data)
+ {
+ $this->_memoryCachingArray[$this->_file] = $data;
+ if ($this->_memoryCachingCounter >= $this->_memoryCachingLimit) {
+ list($key, $value) = each($this->_memoryCachingArray);
+ unset($this->_memoryCachingArray[$key]);
+ } else {
+ $this->_memoryCachingCounter = $this->_memoryCachingCounter + 1;
+ }
+ }
+
+ /**
+ * Make a file name (with path)
+ *
+ * @param string $id cache id
+ * @param string $group name of the group
+ * @access private
+ */
+ function _setFileName($id, $group)
+ {
+
+ if ($this->_fileNameProtection) {
+ $suffix = 'cache_'.md5($group).'_'.md5($id);
+ } else {
+ $suffix = 'cache_'.$group.'_'.$id;
+ }
+ $root = $this->_cacheDir;
+ if ($this->_hashedDirectoryLevel>0) {
+ $hash = md5($suffix);
+ for ($i=0 ; $i<$this->_hashedDirectoryLevel ; $i++) {
+ $root = $root . 'cache_' . substr($hash, 0, $i + 1) . '/';
+ }
+ }
+ $this->_fileName = $suffix;
+ $this->_file = $root.$suffix;
+ }
+
+ /**
+ * Read the cache file and return the content
+ *
+ * @return string content of the cache file
+ * @access private
+ */
+ function _read()
+ {
+ $fp = @fopen($this->_file, "rb");
+ if ($this->_fileLocking) @flock($fp, LOCK_SH);
+ if ($fp) {
+ clearstatcache(); // because the filesize can be cached by PHP itself...
+ $length = @filesize($this->_file);
+ $mqr = get_magic_quotes_runtime();
+ set_magic_quotes_runtime(0);
+ if ($this->_readControl) {
+ $hashControl = @fread($fp, 32);
+ $length = $length - 32;
+ }
+ $data = @fread($fp, $length);
+ set_magic_quotes_runtime($mqr);
+ if ($this->_fileLocking) @flock($fp, LOCK_UN);
+ @fclose($fp);
+ if ($this->_readControl) {
+ $hashData = $this->_hash($data, $this->_readControlType);
+ if ($hashData != $hashControl) {
+ @touch($this->_file, time() - 2*abs($this->_lifeTime));
+ return false;
+ }
+ }
+ return $data;
+ }
+ $this->raiseError('Cache_Lite : Unable to read cache !', -2);
+ return false;
+ }
+
+ /**
+ * Write the given data in the cache file
+ *
+ * @param string $data data to put in cache
+ * @return boolean true if ok
+ * @access private
+ */
+ function _write($data)
+ {
+ $try = 1;
+ while ($try<=2) {
+ $fp = @fopen($this->_file, "wb");
+ if ($fp) {
+ if ($this->_fileLocking) @flock($fp, LOCK_EX);
+ if ($this->_readControl) {
+ @fwrite($fp, $this->_hash($data, $this->_readControlType), 32);
+ }
+ $len = strlen($data);
+ @fwrite($fp, $data, $len);
+ if ($this->_fileLocking) @flock($fp, LOCK_UN);
+ @fclose($fp);
+ return true;
+ } else {
+ if (($try==1) and ($this->_hashedDirectoryLevel>0)) {
+ $hash = md5($this->_fileName);
+ $root = $this->_cacheDir;
+ for ($i=0 ; $i<$this->_hashedDirectoryLevel ; $i++) {
+ $root = $root . 'cache_' . substr($hash, 0, $i + 1) . '/';
+ @mkdir($root, 0700);
+ }
+ $try = 2;
+ } else {
+ $try = 999;
+ }
+ }
+ }
+ $this->raiseError('Cache_Lite : Unable to write cache file : '.$this->_file, -1);
+ return false;
+ }
+
+ /**
+ * Write the given data in the cache file and control it just after to avoir corrupted cache entries
+ *
+ * @param string $data data to put in cache
+ * @return boolean true if the test is ok
+ * @access private
+ */
+ function _writeAndControl($data)
+ {
+ $this->_write($data);
+ $dataRead = $this->_read($data);
+ return ($dataRead==$data);
+ }
+
+ /**
+ * Make a control key with the string containing datas
+ *
+ * @param string $data data
+ * @param string $controlType type of control 'md5', 'crc32' or 'strlen'
+ * @return string control key
+ * @access private
+ */
+ function _hash($data, $controlType)
+ {
+ switch ($controlType) {
+ case 'md5':
+ return md5($data);
+ case 'crc32':
+ return sprintf('% 32d', crc32($data));
+ case 'strlen':
+ return sprintf('% 32d', strlen($data));
+ default:
+ $this->raiseError('Unknown controlType ! (available values are only \'md5\', \'crc32\', \'strlen\')', -5);
+ }
+ }
+
+}
+
+?>
Property changes on: plog/branches/plog-1.1-ben/class/cache/Cache_Lite/Lite.php
___________________________________________________________________
Name: svn:executable
+ *
Added: plog/branches/plog-1.1-ben/class/cache/cache.class.php
===================================================================
--- plog/branches/plog-1.1-ben/class/cache/cache.class.php 2005-04-04 16:06:34 UTC (rev 1694)
+++ plog/branches/plog-1.1-ben/class/cache/cache.class.php 2005-04-04 16:25:26 UTC (rev 1695)
@@ -0,0 +1,54 @@
+<?php
+
+ require_once( PLOG_CLASS_PATH . "class/object/object.class.php" );
+ require_once( PLOG_CLASS_PATH . "class/cache/Cache_Lite/Lite.php" );
+ require_once( PLOG_CLASS_PATH . "class/logger/loggermanager.class.php" );
+
+ /**
+ * Provides a singleton for storing and retrieving data from a global cache.
+ */
+
+ class Cache extends Object
+ {
+ var $cache;
+
+ function Cache( $cacheProperties )
+ {
+ $this->Object();
+ $this->cache = new Cache_Lite( $cacheProperties );
+ }
+
+ function setData( $id, $group, $data )
+ {
+ return $this->cache->save( $data, $id, $group );
+// $this->log->info("Caching $id ($group):" . $data );
+ }
+
+ function getData( $id, $group )
+ {
+ $inCache = $this->cache->get( $id, $group );
+// if ($inCache) {
+// $this->log->info("Cache hit for $id ($group):" . $data );
+// } else {
+// $this->log->info("Cache miss for $id ($group)" );
+// }
+ return $inCache;
+ }
+
+ function removeData( $id, $group )
+ {
+ $this->log->info("Removing from cache $id ($group)" );
+ return $this->cache->remove( $id, $group );
+ }
+
+ function clearCacheByGroup( $group )
+ {
+ return $this->cache->clean( $group );
+ }
+
+ function clearCache()
+ {
+ return $this->cache->clean();
+ }
+ }
+?>
Property changes on: plog/branches/plog-1.1-ben/class/cache/cache.class.php
___________________________________________________________________
Name: svn:executable
+ *
Added: plog/branches/plog-1.1-ben/class/cache/cachemanager.class.php
===================================================================
--- plog/branches/plog-1.1-ben/class/cache/cachemanager.class.php 2005-04-04 16:06:34 UTC (rev 1694)
+++ plog/branches/plog-1.1-ben/class/cache/cachemanager.class.php 2005-04-04 16:25:26 UTC (rev 1695)
@@ -0,0 +1,54 @@
+<?php
+
+ require_once( PLOG_CLASS_PATH . "class/object/object.class.php" );
+
+ define( "CACHE_GLOBAL", "pLog" );
+ define( "CACHE_LOCALES", "locales" );
+ define( "CACHE_BLOGINFOS", "bloginfo" );
+ define( "CACHE_CONFIGDBSTORAGE", "config_db_storage" );
+
+ /**
+ * Provides a singleton for storing and retrieving data from a global cache.
+ */
+
+ class CacheManager extends Object
+ {
+ var $cache;
+
+
+ function CacheManager()
+ {
+ $this->Object();
+ }
+
+ function clearCache()
+ {
+ $cache = CacheManager::getInstance();
+ $cache->_clearCache();
+ }
+
+ function &getCache()
+ {
+ static $cache;
+
+ if( $cache == null ) {
+ // source the neccessary files
+ require_once( PLOG_CLASS_PATH . "class/cache/cache.class.php" );
+
+ // define defaults
+ $cacheParameter = array(
+ 'cacheDir' => '/tmp/cache/',
+ 'caching' => true,
+ 'fileLocking' => true,
+ 'writeControl' => true,
+ 'readControl' => false,
+ 'automaticSerialization' => true,
+ 'hashedDirectoryLevel' => 2 );
+
+ // build a new cache object
+ $cache =& new Cache( $cacheParameter);
+ }
+ return $cache;
+ }
+ }
+?>
Property changes on: plog/branches/plog-1.1-ben/class/cache/cachemanager.class.php
___________________________________________________________________
Name: svn:executable
+ *
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