Rss-Bridge/lib/Cache.php

113 lines
2.8 KiB
PHP
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2013-08-11 13:30:41 +02:00
<?php
/**
* All cache logic
* Note : adapter are store in other place
*/
interface CacheInterface{
public function loadData();
public function saveData($datas);
public function getTime();
}
abstract class CacheAbstract implements CacheInterface{
protected $param;
public function prepare(array $param){
$this->param = $param;
return $this;
}
}
class Cache{
static protected $dirCache;
public function __construct(){
throw new \LogicException('Please use ' . __CLASS__ . '::create for new object.');
}
static public function create($nameCache){
if( !static::isValidNameCache($nameCache) ){
throw new \InvalidArgumentException('Name cache must be at least one uppercase follow or not by alphanumeric or dash characters.');
}
$pathCache = self::getDir() . $nameCache . '.php';
if( !file_exists($pathCache) ){
throw new \Exception('The cache you looking for does not exist.');
}
require_once $pathCache;
return new $nameCache();
}
static public function setDir($dirCache){
if( !is_string($dirCache) ){
throw new \InvalidArgumentException('Dir cache must be a string.');
}
if( !file_exists($dirCache) ){
throw new \Exception('Dir cache does not exist.');
}
self::$dirCache = $dirCache;
}
static public function getDir(){
$dirCache = self::$dirCache;
if( is_null($dirCache) ){
throw new \LogicException(__CLASS__ . ' class need to know cache path !');
}
return $dirCache;
}
static public function isValidNameCache($nameCache){
return preg_match('@^[A-Z][a-zA-Z0-9-]*$@', $nameCache);
}
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static public function utf8_encode_deep(&$input) {
if (is_string($input)) {
$input = utf8_encode($input);
} else if (is_array($input)) {
foreach ($input as &$value) {
Cache::utf8_encode_deep($value);
}
unset($value);
} else if (is_object($input)) {
$vars = array_keys(get_object_vars($input));
foreach ($vars as $var) {
Cache::utf8_encode_deep($input->$var);
}
}
}
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static public function purge() {
$cacheTimeLimit = time() - 60*60*24 ;
$cachePath = 'cache';
if(file_exists($cachePath)) {
$cacheIterator = new RecursiveIteratorIterator(
new RecursiveDirectoryIterator($cachePath),
RecursiveIteratorIterator::CHILD_FIRST
);
foreach ($cacheIterator as $cacheFile) {
if (in_array($cacheFile->getBasename(), array('.', '..')))
continue;
elseif ($cacheFile->isFile()) {
if( filemtime($cacheFile->getPathname()) < $cacheTimeLimit )
unlink( $cacheFile->getPathname() );
}
}
}
}
}