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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Config\Resource;
/**
* DirectoryResource represents a resources stored in a subdirectory tree.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class DirectoryResource implements ResourceInterface, \Serializable
{
private $resource;
private $pattern;
/**
* Constructor.
*
* @param string $resource The file path to the resource
* @param string $pattern A pattern to restrict monitored files
*/
public function __construct($resource, $pattern = null)
{
$this->resource = $resource;
$this->pattern = $pattern;
}
/**
* Returns a string representation of the Resource.
*
* @return string A string representation of the Resource
*/
public function __toString()
{
return (string) $this->resource;
}
/**
* Returns the resource tied to this Resource.
*
* @return mixed The resource
*/
public function getResource()
{
return $this->resource;
}
public function getPattern()
{
return $this->pattern;
}
/**
* Returns true if the resource has not been updated since the given timestamp.
*
* @param integer $timestamp The last time the resource was loaded
*
* @return Boolean true if the resource has not been updated, false otherwise
*/
public function isFresh($timestamp)
{
if (!is_dir($this->resource)) {
return false;
}
$newestMTime = filemtime($this->resource);
foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->resource), \RecursiveIteratorIterator::SELF_FIRST) as $file) {
// if regex filtering is enabled only check matching files
if ($this->pattern && $file->isFile() && !preg_match($this->pattern, $file->getBasename())) {
continue;
}
// always monitor directories for changes, except the .. entries
// (otherwise deleted files wouldn't get detected)
if ($file->isDir() && '/..' === substr($file, -3)) {
continue;
}
$newestMTime = max($file->getMTime(), $newestMTime);
}
return $newestMTime < $timestamp;
}
public function serialize()
{
return serialize(array($this->resource, $this->pattern));
}
public function unserialize($serialized)
{
list($this->resource, $this->pattern) = unserialize($serialized);
}
}