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<?php
namespace Gaufrette\Adapter;
use Gaufrette\Util;
use Gaufrette\Adapter;
use Gaufrette\Stream;
/**
* Adapter for the local filesystem.
*
* @author Antoine Hérault <[email protected]>
* @author Leszek Prabucki <[email protected]>
*/
class Local implements Adapter, StreamFactory, ChecksumCalculator, SizeCalculator, MimeTypeProvider
{
protected $directory;
private $create;
private $mode;
/**
* @param string $directory Directory where the filesystem is located
* @param bool $create Whether to create the directory if it does not
* exist (default FALSE)
* @param int $mode Mode for mkdir
*
* @throws \RuntimeException if the specified directory does not exist and
* could not be created
*/
public function __construct($directory, $create = false, $mode = 0777)
{
$this->directory = Util\Path::normalize($directory);
if (is_link($this->directory)) {
$this->directory = realpath($this->directory);
}
$this->create = $create;
$this->mode = $mode;
}
/**
* {@inheritdoc}
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function read($key)
{
if ($this->isDirectory($key)) {
return false;
}
return file_get_contents($this->computePath($key));
}
/**
* {@inheritdoc}
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function write($key, $content)
{
$path = $this->computePath($key);
$this->ensureDirectoryExists(\Gaufrette\Util\Path::dirname($path), true);
return file_put_contents($path, $content);
}
/**
* {@inheritdoc}
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function rename($sourceKey, $targetKey)
{
$targetPath = $this->computePath($targetKey);
$this->ensureDirectoryExists(\Gaufrette\Util\Path::dirname($targetPath), true);
return rename($this->computePath($sourceKey), $targetPath);
}
/**
* {@inheritdoc}
*/
public function exists($key)
{
return is_file($this->computePath($key));
}
/**
* {@inheritdoc}
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function keys()
{
$this->ensureDirectoryExists($this->directory, $this->create);
try {
$files = new \RecursiveIteratorIterator(
new \RecursiveDirectoryIterator(
$this->directory,
\FilesystemIterator::SKIP_DOTS | \FilesystemIterator::UNIX_PATHS
),
\RecursiveIteratorIterator::CHILD_FIRST
);
} catch (\Exception $e) {
$files = new \EmptyIterator();
}
$keys = [];
foreach ($files as $file) {
$keys[] = $this->computeKey($file);
}
sort($keys);
return $keys;
}
/**
* {@inheritdoc}
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function mtime($key)
{
return filemtime($this->computePath($key));
}
/**
* {@inheritdoc}
*
* Can also delete a directory recursively when the given $key matches a
* directory.
*/
public function delete($key)
{
if ($this->isDirectory($key)) {
return $this->deleteDirectory($this->computePath($key));
} elseif ($this->exists($key)) {
return unlink($this->computePath($key));
}
return false;
}
/**
* @param string $key
*
* @return bool
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function isDirectory($key)
{
return is_dir($this->computePath($key));
}
/**
* {@inheritdoc}
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function createStream($key)
{
return new Stream\Local($this->computePath($key), $this->mode);
}
/**
* {@inheritdoc}
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function checksum($key)
{
return Util\Checksum::fromFile($this->computePath($key));
}
/**
* {@inheritdoc}
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function size($key)
{
return Util\Size::fromFile($this->computePath($key));
}
/**
* {@inheritdoc}
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function mimeType($key)
{
$fileInfo = new \finfo(FILEINFO_MIME_TYPE);
return $fileInfo->file($this->computePath($key));
}
/**
* Computes the key from the specified path.
*
* @param $path
* @return string
*
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
public function computeKey($path)
{
$path = $this->normalizePath($path);
return ltrim(substr($path, strlen($this->directory)), '/');
}
/**
* Computes the path from the specified key.
*
* @param string $key The key which for to compute the path
*
* @return string A path
*
* @throws \InvalidArgumentException If the directory already exists
* @throws \OutOfBoundsException If the computed path is out of the directory
* @throws \RuntimeException If directory does not exists and cannot be created
*/
protected function computePath($key)
{
$this->ensureDirectoryExists($this->directory, $this->create);
return $this->normalizePath($this->directory . '/' . $key);
}
/**
* Normalizes the given path.
*
* @param string $path
*
* @return string
* @throws \OutOfBoundsException If the computed path is out of the
* directory
*/
protected function normalizePath($path)
{
$path = Util\Path::normalize($path);
if (0 !== strpos($path, $this->directory)) {
throw new \OutOfBoundsException(sprintf('The path "%s" is out of the filesystem.', $path));
}
return $path;
}
/**
* Ensures the specified directory exists, creates it if it does not.
*
* @param string $directory Path of the directory to test
* @param bool $create Whether to create the directory if it does
* not exist
*
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory does not exists and could not
* be created
*/
protected function ensureDirectoryExists($directory, $create = false)
{
if (!is_dir($directory)) {
if (!$create) {
throw new \RuntimeException(sprintf('The directory "%s" does not exist.', $directory));
}
$this->createDirectory($directory);
}
}
/**
* Creates the specified directory and its parents.
*
* @param string $directory Path of the directory to create
*
* @throws \InvalidArgumentException if the directory already exists
* @throws \RuntimeException if the directory could not be created
*/
protected function createDirectory($directory)
{
if (!@mkdir($directory, $this->mode, true) && !is_dir($directory)) {
throw new \RuntimeException(sprintf('The directory \'%s\' could not be created.', $directory));
}
}
/**
* @param string The directory's path to delete
*
* @throws \InvalidArgumentException When attempting to delete the root
* directory of this adapter.
*
* @return bool Wheter the operation succeeded or not
*/
private function deleteDirectory($directory)
{
if ($this->directory === $directory) {
throw new \InvalidArgumentException(
sprintf('Impossible to delete the root directory of this Local adapter ("%s").', $directory)
);
}
$status = true;
if (file_exists($directory)) {
$iterator = new \RecursiveIteratorIterator(
new \RecursiveDirectoryIterator(
$directory,
\FilesystemIterator::SKIP_DOTS | \FilesystemIterator::UNIX_PATHS
),
\RecursiveIteratorIterator::CHILD_FIRST
);
foreach ($iterator as $item) {
if ($item->isDir()) {
$status = $status && rmdir(strval($item));
} else {
$status = $status && unlink(strval($item));
}
}
$status = $status && rmdir($directory);
}
return $status;
}
}