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120 office 1 <?php
2  
3 /*
4 * This file is part of the Symfony package.
5 *
6 * (c) Fabien Potencier <fabien@symfony.com>
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11  
12 namespace Symfony\Component\Finder\Iterator;
13  
14 use Symfony\Component\Finder\Exception\AccessDeniedException;
15 use Symfony\Component\Finder\SplFileInfo;
16  
17 /**
18 * Extends the \RecursiveDirectoryIterator to support relative paths.
19 *
20 * @author Victor Berchet <victor@suumit.com>
21 */
22 class RecursiveDirectoryIterator extends \RecursiveDirectoryIterator
23 {
24 /**
25 * @var bool
26 */
27 private $ignoreUnreadableDirs;
28  
29 /**
30 * @var bool
31 */
32 private $rewindable;
33  
34 // these 3 properties take part of the performance optimization to avoid redoing the same work in all iterations
35 private $rootPath;
36 private $subPath;
37 private $directorySeparator = '/';
38  
39 /**
40 * Constructor.
41 *
42 * @param string $path
43 * @param int $flags
44 * @param bool $ignoreUnreadableDirs
45 *
46 * @throws \RuntimeException
47 */
48 public function __construct($path, $flags, $ignoreUnreadableDirs = false)
49 {
50 if ($flags & (self::CURRENT_AS_PATHNAME | self::CURRENT_AS_SELF)) {
51 throw new \RuntimeException('This iterator only support returning current as fileinfo.');
52 }
53  
54 parent::__construct($path, $flags);
55 $this->ignoreUnreadableDirs = $ignoreUnreadableDirs;
56 $this->rootPath = $path;
57 if ('/' !== DIRECTORY_SEPARATOR && !($flags & self::UNIX_PATHS)) {
58 $this->directorySeparator = DIRECTORY_SEPARATOR;
59 }
60 }
61  
62 /**
63 * Return an instance of SplFileInfo with support for relative paths.
64 *
65 * @return SplFileInfo File information
66 */
67 public function current()
68 {
69 // the logic here avoids redoing the same work in all iterations
70  
71 if (null === $subPathname = $this->subPath) {
72 $subPathname = $this->subPath = (string) $this->getSubPath();
73 }
74 if ('' !== $subPathname) {
75 $subPathname .= $this->directorySeparator;
76 }
77 $subPathname .= $this->getFilename();
78  
79 return new SplFileInfo($this->rootPath.$this->directorySeparator.$subPathname, $this->subPath, $subPathname);
80 }
81  
82 /**
83 * @return \RecursiveIterator
84 *
85 * @throws AccessDeniedException
86 */
87 public function getChildren()
88 {
89 try {
90 $children = parent::getChildren();
91  
92 if ($children instanceof self) {
93 // parent method will call the constructor with default arguments, so unreadable dirs won't be ignored anymore
94 $children->ignoreUnreadableDirs = $this->ignoreUnreadableDirs;
95  
96 // performance optimization to avoid redoing the same work in all children
97 $children->rewindable = &$this->rewindable;
98 $children->rootPath = $this->rootPath;
99 }
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 }