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<?php |
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declare(strict_types = 1); |
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namespace drupol\phpvfs\Node; |
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use drupol\phpvfs\Utils\Path; |
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/** |
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* Class Directory. |
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*/ |
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class Directory extends FilesystemNode implements DirectoryInterface |
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{ |
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/** |
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* @param string $id |
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* |
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* @throws \Exception |
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* |
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* @return \drupol\phpvfs\Node\DirectoryInterface |
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*/ |
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public function cd(string $id): DirectoryInterface |
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{ |
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if (!$this->exist($id)) { |
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throw new \Exception(\sprintf('Cannot change directory to %s: No such file or directory.', $id)); |
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} |
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$path = Path::fromString($id); |
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if ($path->isRoot() && ($root = $this->root()) instanceof DirectoryInterface) { |
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return $root; |
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} |
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/** @var \drupol\phpvfs\Node\DirectoryInterface $cwd */ |
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$cwd = $path->isAbsolute() ? |
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$this->root() : |
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$this; |
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foreach ($path->getIterator() as $pathPart) { |
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$cwd = $cwd->containsAttributeId($pathPart); |
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} |
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if ($cwd instanceof DirectoryInterface) { |
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return $cwd; |
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} |
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} |
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/** |
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* @param string $id |
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* |
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* @return null|\drupol\phpvfs\Node\DirectoryInterface|\drupol\phpvfs\Node\FileInterface|\drupol\phpvfs\Node\FilesystemNodeInterface |
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*/ |
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public function containsAttributeId(string $id): ?FilesystemNodeInterface |
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{ |
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/** @var \drupol\phpvfs\Node\FilesystemNodeInterface $child */ |
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foreach ($this->children() as $child) { |
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if ($child->getAttribute('id') === $id) { |
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return $child; |
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} |
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} |
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return null; |
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} |
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/** |
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* @param string $id |
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* @param array $attributes |
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* |
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* @throws \Exception |
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* |
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* @return \drupol\phpvfs\Node\Directory |
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*/ |
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public static function create(string $id, array $attributes = []) |
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{ |
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$path = Path::fromString($id); |
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if (\DIRECTORY_SEPARATOR !== $id && false !== \strpos($id, \DIRECTORY_SEPARATOR)) { |
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if ($path->isAbsolute()) { |
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$firstPart = \DIRECTORY_SEPARATOR; |
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} else { |
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$firstPart = $path->shift(); |
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} |
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$root = self::create($firstPart, $attributes); |
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foreach ($path->getIterator() as $pathPart) { |
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$child = new self(['id' => $pathPart]); |
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$root->add($child); |
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$root = $child; |
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} |
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return $root; |
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} |
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$attributes = ['id' => $id] + $attributes; |
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return new self($attributes); |
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} |
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/** |
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* @param string ...$ids |
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* |
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* @return bool |
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*/ |
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public function exist(string ...$ids): bool |
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{ |
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$exist = true; |
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$existId = true; |
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foreach ($ids as $id) { |
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$path = Path::fromString($id); |
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/** @var \drupol\phpvfs\Node\DirectoryInterface $cwd */ |
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$cwd = $path->isAbsolute() ? |
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$this->root() : |
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$this; |
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foreach ($path->getIterator() as $pathPart) { |
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$pathPartExist = false; |
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if (\DIRECTORY_SEPARATOR === $pathPart) { |
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$pathPartExist = true; |
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} elseif (null !== $child = $cwd->containsAttributeId($pathPart)) { |
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$pathPartExist = true; |
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$cwd = $child; |
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} |
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$existId = $existId && $pathPartExist; |
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} |
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$exist = $exist && $existId; |
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} |
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return $exist; |
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} |
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/** |
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* @param string $id |
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* |
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* @throws \Exception |
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* |
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* @return \drupol\phpvfs\Node\FilesystemNodeInterface |
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*/ |
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public function get(string $id) |
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{ |
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$path = Path::fromString($id); |
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if ($path->isRoot()) { |
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return $this->root(); |
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} |
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/** @var \drupol\phpvfs\Node\DirectoryInterface $cwd */ |
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$child = $path->isAbsolute() ? |
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$this->root() : |
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$this; |
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foreach ($path->getIterator() as $pathPart) { |
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$child = $child->containsAttributeId($pathPart); |
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} |
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return $child; |
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} |
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/** |
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* @param string $id |
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* |
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* @throws \Exception |
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* |
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* @return \drupol\phptree\Node\NodeInterface|\drupol\phpvfs\Node\DirectoryInterface |
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*/ |
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public function mkdir(string $id) |
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{ |
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$dir = self::create($id); |
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return $this->add($dir->root()); |
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} |
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/** |
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* @param string $id |
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* |
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* @throws \Exception |
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* |
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* @return \drupol\phpvfs\Node\DirectoryInterface |
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*/ |
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public function rmdir(string $id): DirectoryInterface |
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{ |
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if (!$this->exist($id)) { |
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throw new \Exception(\sprintf('Cannot remove %s: No such file or directory.', $id)); |
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} |
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$path = Path::fromString($id); |
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if ($path->isRoot()) { |
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throw new \Exception(\sprintf('Cannot remove root directory.')); |
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} |
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/** @var \drupol\phpvfs\Node\DirectoryInterface $cwd */ |
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$cwd = $path->isAbsolute() ? |
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$this->root() : |
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$this; |
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$last = $path->getLastPart(); |
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foreach ($cwd->all() as $child) { |
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if (!($child instanceof DirectoryInterface)) { |
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continue; |
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} |
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if ($child->getAttribute('id') !== $last) { |
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continue; |
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} |
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if (null !== $cwd = $child->getParent()) { |
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$cwd->remove($child); |
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} |
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} |
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if ($cwd instanceof DirectoryInterface) { |
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return $cwd; |
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} |
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} |
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} |
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For hinted functions/methods where all return statements with the correct type are only reachable via conditions, ?null? gets implicitly returned which may be incompatible with the hinted type. Let?s take a look at an example: