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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\Finder\Iterator;
use Symfony\Component\Finder\Exception\AccessDeniedException;
use Symfony\Component\Finder\SplFileInfo;
/**
* Extends the \RecursiveDirectoryIterator to support relative paths.
*
* @author Victor Berchet <victor@suumit.com>
*/
class RecursiveDirectoryIterator extends \RecursiveDirectoryIterator
{
/**
* @var bool
*/
private $ignoreUnreadableDirs;
/**
* @var bool
*/
private $rewindable;
// these 3 properties take part of the performance optimization to avoid redoing the same work in all iterations
private $rootPath;
private $subPath;
private $directorySeparator = '/';
/**
* @throws \RuntimeException
*/
public function __construct(string $path, int $flags, bool $ignoreUnreadableDirs = false)
{
if ($flags & (self::CURRENT_AS_PATHNAME | self::CURRENT_AS_SELF)) {
throw new \RuntimeException('This iterator only support returning current as fileinfo.');
}
parent::__construct($path, $flags);
$this->ignoreUnreadableDirs = $ignoreUnreadableDirs;
$this->rootPath = $path;
if ('/' !== \DIRECTORY_SEPARATOR && !($flags & self::UNIX_PATHS)) {
$this->directorySeparator = \DIRECTORY_SEPARATOR;
}
}
/**
* Return an instance of SplFileInfo with support for relative paths.
*
* @return SplFileInfo
*/
#[\ReturnTypeWillChange]
public function current()
{
// the logic here avoids redoing the same work in all iterations
if (null === $subPathname = $this->subPath) {
$subPathname = $this->subPath = $this->getSubPath();
}
if ('' !== $subPathname) {
$subPathname .= $this->directorySeparator;
}
$subPathname .= $this->getFilename();
if ('/' !== $basePath = $this->rootPath) {
$basePath .= $this->directorySeparator;
}
return new SplFileInfo($basePath.$subPathname, $this->subPath, $subPathname);
}
/**
* @param bool $allowLinks
*
* @return bool
*/
#[\ReturnTypeWillChange]
public function hasChildren($allowLinks = false)
{
$hasChildren = parent::hasChildren($allowLinks);
if (!$hasChildren || !$this->ignoreUnreadableDirs) {
return $hasChildren;
}
try {
parent::getChildren();
return true;
} catch (\UnexpectedValueException $e) {
// If directory is unreadable and finder is set to ignore it, skip children
return false;
}
}
/**
* @return \RecursiveDirectoryIterator
*
* @throws AccessDeniedException
*/
#[\ReturnTypeWillChange]
public function getChildren()
{
try {
$children = parent::getChildren();
if ($children instanceof self) {
// parent method will call the constructor with default arguments, so unreadable dirs won't be ignored anymore
$children->ignoreUnreadableDirs = $this->ignoreUnreadableDirs;
// performance optimization to avoid redoing the same work in all children
$children->rewindable = &$this->rewindable;
$children->rootPath = $this->rootPath;
}
return $children;
} catch (\UnexpectedValueException $e) {
throw new AccessDeniedException($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Do nothing for non rewindable stream.
*
* @return void
*/
#[\ReturnTypeWillChange]
public function rewind()
{
if (false === $this->isRewindable()) {
return;
}
parent::rewind();
}
/**
* Checks if the stream is rewindable.
*
* @return bool
*/
public function isRewindable()
{
if (null !== $this->rewindable) {
return $this->rewindable;
}
if (false !== $stream = @opendir($this->getPath())) {
$infos = stream_get_meta_data($stream);
closedir($stream);
if ($infos['seekable']) {
return $this->rewindable = true;
}
}
return $this->rewindable = false;
}
}
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