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<?php
namespace League\Flysystem;
use InvalidArgumentException;
use League\Flysystem\Plugin\PluggableTrait;
use League\Flysystem\Plugin\PluginNotFoundException;
use LogicException;
/**
* Class MountManager.
*
* Proxies methods to Filesystem (@see __call):
*
* @method AdapterInterface getAdapter($prefix)
* @method Config getConfig($prefix)
* @method bool has($path)
* @method bool write($path, $contents, array $config = [])
* @method bool writeStream($path, $resource, array $config = [])
* @method bool put($path, $contents, $config = [])
* @method bool putStream($path, $contents, $config = [])
* @method string readAndDelete($path)
* @method bool update($path, $contents, $config = [])
* @method bool updateStream($path, $resource, $config = [])
* @method string|false read($path)
* @method resource|false readStream($path)
* @method bool rename($path, $newpath)
* @method bool delete($path)
* @method bool deleteDir($dirname)
* @method bool createDir($dirname, $config = [])
* @method array listFiles($directory = '', $recursive = false)
* @method array listPaths($directory = '', $recursive = false)
* @method array getWithMetadata($path, array $metadata)
* @method string|false getMimetype($path)
* @method string|false getTimestamp($path)
* @method string|false getVisibility($path)
* @method int|false getSize($path);
* @method bool setVisibility($path, $visibility)
* @method array|false getMetadata($path)
* @method Handler get($path, Handler $handler = null)
* @method Filesystem flushCache()
* @method void assertPresent($path)
* @method void assertAbsent($path)
* @method Filesystem addPlugin(PluginInterface $plugin)
*/
class MountManager
{
use PluggableTrait;
/**
* @var array
*/
protected $filesystems = [];
/**
* Constructor.
*
* @param array $filesystems
*/
public function __construct(array $filesystems = [])
{
$this->mountFilesystems($filesystems);
}
/**
* Mount filesystems.
*
* @param array $filesystems [:prefix => Filesystem,]
*
* @return $this
*/
public function mountFilesystems(array $filesystems)
{
foreach ($filesystems as $prefix => $filesystem) {
$this->mountFilesystem($prefix, $filesystem);
}
return $this;
}
/**
* Mount filesystems.
*
* @param string $prefix
* @param FilesystemInterface $filesystem
*
* @return $this
*/
public function mountFilesystem($prefix, FilesystemInterface $filesystem)
{
if ( ! is_string($prefix)) {
throw new InvalidArgumentException(__METHOD__ . ' expects argument #1 to be a string.');
}
$this->filesystems[$prefix] = $filesystem;
return $this;
}
/**
* Get the filesystem with the corresponding prefix.
*
* @param string $prefix
*
* @throws LogicException
*
* @return FilesystemInterface
*/
public function getFilesystem($prefix)
{
if ( ! isset($this->filesystems[$prefix])) {
throw new LogicException('No filesystem mounted with prefix ' . $prefix);
}
return $this->filesystems[$prefix];
}
/**
* Retrieve the prefix from an arguments array.
*
* @param array $arguments
*
* @return array [:prefix, :arguments]
*/
public function filterPrefix(array $arguments)
{
if (empty($arguments)) {
throw new LogicException('At least one argument needed');
}
$path = array_shift($arguments);
if ( ! is_string($path)) {
throw new InvalidArgumentException('First argument should be a string');
}
if ( ! preg_match('#^.+\:\/\/.*#', $path)) {
throw new InvalidArgumentException('No prefix detected in path: ' . $path);
}
list($prefix, $path) = explode('://', $path, 2);
array_unshift($arguments, $path);
return [$prefix, $arguments];
}
/**
* @param string $directory
* @param bool $recursive
*
* @return array
*/
public function listContents($directory = '', $recursive = false)
{
list($prefix, $arguments) = $this->filterPrefix([$directory]);
$filesystem = $this->getFilesystem($prefix);
$directory = array_shift($arguments);
$result = $filesystem->listContents($directory, $recursive);
foreach ($result as &$file) {
$file['filesystem'] = $prefix;
}
return $result;
}
/**
* Call forwarder.
*
* @param string $method
* @param array $arguments
*
* @return mixed
*/
public function __call($method, $arguments)
{
list($prefix, $arguments) = $this->filterPrefix($arguments);
return $this->invokePluginOnFilesystem($method, $arguments, $prefix);
}
/**
* @param $from
* @param $to
* @param array $config
*
* @return bool
*/
public function copy($from, $to, array $config = [])
{
list($prefixFrom, $arguments) = $this->filterPrefix([$from]);
$fsFrom = $this->getFilesystem($prefixFrom);
$buffer = call_user_func_array([$fsFrom, 'readStream'], $arguments);
if ($buffer === false) {
return false;
}
list($prefixTo, $arguments) = $this->filterPrefix([$to]);
$fsTo = $this->getFilesystem($prefixTo);
$result = call_user_func_array([$fsTo, 'writeStream'], array_merge($arguments, [$buffer, $config]));
if (is_resource($buffer)) {
fclose($buffer);
}
return $result;
}
/**
* List with plugin adapter.
*
* @param array $keys
* @param string $directory
* @param bool $recursive
*/
public function listWith(array $keys = [], $directory = '', $recursive = false)
{
list($prefix, $arguments) = $this->filterPrefix([$directory]);
$directory = $arguments[0];
$arguments = [$keys, $directory, $recursive];
return $this->invokePluginOnFilesystem('listWith', $arguments, $prefix);
}
/**
* Move a file.
*
* @param $from
* @param $to
* @param array $config
*
* @return bool
*/
public function move($from, $to, array $config = [])
{
$copied = $this->copy($from, $to, $config);
if ($copied) {
return $this->delete($from);
}
return false;
}
/**
* Invoke a plugin on a filesystem mounted on a given prefix.
*
* @param $method
* @param $arguments
* @param $prefix
*
* @return mixed
*/
public function invokePluginOnFilesystem($method, $arguments, $prefix)
{
$filesystem = $this->getFilesystem($prefix);
try {
return $this->invokePlugin($method, $arguments, $filesystem);
} catch (PluginNotFoundException $e) {
// Let it pass, it's ok, don't panic.
}
$callback = [$filesystem, $method];
return call_user_func_array($callback, $arguments);
}
}