Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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RecursiveDirectoryIterator.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Symfony\Component\Finder\Iterator;
013
014 use Symfony\Component\Finder\Exception\AccessDeniedException;
015 use Symfony\Component\Finder\SplFileInfo;
016
017 /**
018 * Extends the \RecursiveDirectoryIterator to support relative paths.
019 *
020 * @author Victor Berchet <victor@suumit.com>
021 */
022 class RecursiveDirectoryIterator extends \RecursiveDirectoryIterator
023 {
024 /**
025 * @var bool
026 */
027 private $ignoreUnreadableDirs;
028
029 /**
030 * @var bool
031 */
032 private $rewindable;
033
034 // these 3 properties take part of the performance optimization to avoid redoing the same work in all iterations
035 private $rootPath;
036 private $subPath;
037 private $directorySeparator = '/';
038
039 /**
040 * Constructor.
041 *
042 * @param string $path
043 * @param int $flags
044 * @param bool $ignoreUnreadableDirs
045 *
046 * @throws \RuntimeException
047 */
048 public function __construct($path, $flags, $ignoreUnreadableDirs = false)
049 {
050 if ($flags & (self::CURRENT_AS_PATHNAME | self::CURRENT_AS_SELF)) {
051 throw new \RuntimeException('This iterator only support returning current as fileinfo.');
052 }
053
054 parent::__construct($path, $flags);
055 $this->ignoreUnreadableDirs = $ignoreUnreadableDirs;
056 $this->rootPath = (string) $path;
057 if ('/' !== DIRECTORY_SEPARATOR && !($flags & self::UNIX_PATHS)) {
058 $this->directorySeparator = DIRECTORY_SEPARATOR;
059 }
060 }
061
062 /**
063 * Return an instance of SplFileInfo with support for relative paths.
064 *
065 * @return SplFileInfo File information
066 */
067 public function current()
068 {
069 // the logic here avoids redoing the same work in all iterations
070
071 if (null === $subPathname = $this->subPath) {
072 $subPathname = $this->subPath = (string) $this->getSubPath();
073 }
074 if ('' !== $subPathname) {
075 $subPathname .= $this->directorySeparator;
076 }
077 $subPathname .= $this->getFilename();
078
079 return new SplFileInfo($this->rootPath.$this->directorySeparator.$subPathname, $this->subPath, $subPathname);
080 }
081
082 /**
083 * @return \RecursiveIterator
084 *
085 * @throws AccessDeniedException
086 */
087 public function getChildren()
088 {
089 try {
090 $children = parent::getChildren();
091
092 if ($children instanceof self) {
093 // parent method will call the constructor with default arguments, so unreadable dirs won't be ignored anymore
094 $children->ignoreUnreadableDirs = $this->ignoreUnreadableDirs;
095
096 // performance optimization to avoid redoing the same work in all children
097 $children->rewindable = &$this->rewindable;
098 $children->rootPath = $this->rootPath;
099 }
100
101 return $children;
102 } catch (\UnexpectedValueException $e) {
103 if ($this->ignoreUnreadableDirs) {
104 // If directory is unreadable and finder is set to ignore it, a fake empty content is returned.
105 return new \RecursiveArrayIterator(array());
106 } else {
107 throw new AccessDeniedException($e->getMessage(), $e->getCode(), $e);
108 }
109 }
110 }
111
112 /**
113 * Do nothing for non rewindable stream.
114 */
115 public function rewind()
116 {
117 if (false === $this->isRewindable()) {
118 return;
119 }
120
121 // @see https://bugs.php.net/68557
122 if (PHP_VERSION_ID < 50523 || PHP_VERSION_ID >= 50600 && PHP_VERSION_ID < 50607) {
123 parent::next();
124 }
125
126 parent::rewind();
127 }
128
129 /**
130 * Checks if the stream is rewindable.
131 *
132 * @return bool true when the stream is rewindable, false otherwise
133 */
134 public function isRewindable()
135 {
136 if (null !== $this->rewindable) {
137 return $this->rewindable;
138 }
139
140 // workaround for an HHVM bug, should be removed when https://github.com/facebook/hhvm/issues/7281 is fixed
141 if ('' === $this->getPath()) {
142 return $this->rewindable = false;
143 }
144
145 if (false !== $stream = @opendir($this->getPath())) {
146 $infos = stream_get_meta_data($stream);
147 closedir($stream);
148
149 if ($infos['seekable']) {
150 return $this->rewindable = true;
151 }
152 }
153
154 return $this->rewindable = false;
155 }
156 }
157