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Name	Action
..
Adapter
AdapterInterface.php	Edit
Config.php	Edit
ConfigAwareTrait.php	Edit
Directory.php	Edit
Exception.php	Edit
File.php	Edit
FileExistsException.php	Edit
FileNotFoundException.php	Edit
Filesystem.php	Edit
FilesystemInterface.php	Edit
FilesystemNotFoundException.php	Edit
Handler.php	Edit
MountManager.php	Edit
NotSupportedException.php	Edit
Plugin
PluginInterface.php	Edit
ReadInterface.php	Edit
RootViolationException.php	Edit
SafeStorage.php	Edit
UnreadableFileException.php	Edit
Util
Util.php	Edit

Editing: Filesystem.php

<?php

namespace League\Flysystem;

use InvalidArgumentException;
use League\Flysystem\Adapter\CanOverwriteFiles;
use League\Flysystem\Plugin\PluggableTrait;
use League\Flysystem\Util\ContentListingFormatter;

/**
 * @method array getWithMetadata(string $path, array $metadata)
 * @method bool  forceCopy(string $path, string $newpath)
 * @method bool  forceRename(string $path, string $newpath)
 * @method array listFiles(string $path = '', boolean $recursive = false)
 * @method array listPaths(string $path = '', boolean $recursive = false)
 * @method array listWith(array $keys = [], $directory = '', $recursive = false)
 */
class Filesystem implements FilesystemInterface
{
    use PluggableTrait;
    use ConfigAwareTrait;

/**
     * @var AdapterInterface
     */
    protected $adapter;

/**
     * Constructor.
     *
     * @param AdapterInterface $adapter
     * @param Config|array     $config
     */
    public function __construct(AdapterInterface $adapter, $config = null)
    {
        $this->adapter = $adapter;
        $this->setConfig($config);
    }

/**
     * Get the Adapter.
     *
     * @return AdapterInterface adapter
     */
    public function getAdapter()
    {
        return $this->adapter;
    }

/**
     * @inheritdoc
     */
    public function has($path)
    {
        $path = Util::normalizePath($path);

return strlen($path) === 0 ? false : (bool) $this->getAdapter()->has($path);
    }

/**
     * @inheritdoc
     */
    public function write($path, $contents, array $config = [])
    {
        $path = Util::normalizePath($path);
        $this->assertAbsent($path);
        $config = $this->prepareConfig($config);

return (bool) $this->getAdapter()->write($path, $contents, $config);
    }

/**
     * @inheritdoc
     */
    public function writeStream($path, $resource, array $config = [])
    {
        if ( ! is_resource($resource)) {
            throw new InvalidArgumentException(__METHOD__ . ' expects argument #2 to be a valid resource.');
        }

$path = Util::normalizePath($path);
        $this->assertAbsent($path);
        $config = $this->prepareConfig($config);

Util::rewindStream($resource);

return (bool) $this->getAdapter()->writeStream($path, $resource, $config);
    }

/**
     * @inheritdoc
     */
    public function put($path, $contents, array $config = [])
    {
        $path = Util::normalizePath($path);
        $config = $this->prepareConfig($config);

if ( ! $this->getAdapter() instanceof CanOverwriteFiles && $this->has($path)) {
            return (bool) $this->getAdapter()->update($path, $contents, $config);
        }

return (bool) $this->getAdapter()->write($path, $contents, $config);
    }

/**
     * @inheritdoc
     */
    public function putStream($path, $resource, array $config = [])
    {
        if ( ! is_resource($resource)) {
            throw new InvalidArgumentException(__METHOD__ . ' expects argument #2 to be a valid resource.');
        }

$path = Util::normalizePath($path);
        $config = $this->prepareConfig($config);
        Util::rewindStream($resource);

if ( ! $this->getAdapter() instanceof CanOverwriteFiles &&$this->has($path)) {
            return (bool) $this->getAdapter()->updateStream($path, $resource, $config);
        }

return (bool) $this->getAdapter()->writeStream($path, $resource, $config);
    }

/**
     * @inheritdoc
     */
    public function readAndDelete($path)
    {
        $path = Util::normalizePath($path);
        $this->assertPresent($path);
        $contents = $this->read($path);

if ($contents === false) {
            return false;
        }

$this->delete($path);

return $contents;
    }

/**
     * @inheritdoc
     */
    public function update($path, $contents, array $config = [])
    {
        $path = Util::normalizePath($path);
        $config = $this->prepareConfig($config);

$this->assertPresent($path);

return (bool) $this->getAdapter()->update($path, $contents, $config);
    }

/**
     * @inheritdoc
     */
    public function updateStream($path, $resource, array $config = [])
    {
        if ( ! is_resource($resource)) {
            throw new InvalidArgumentException(__METHOD__ . ' expects argument #2 to be a valid resource.');
        }

$path = Util::normalizePath($path);
        $config = $this->prepareConfig($config);
        $this->assertPresent($path);
        Util::rewindStream($resource);

return (bool) $this->getAdapter()->updateStream($path, $resource, $config);
    }

/**
     * @inheritdoc
     */
    public function read($path)
    {
        $path = Util::normalizePath($path);
        $this->assertPresent($path);

if ( ! ($object = $this->getAdapter()->read($path))) {
            return false;
        }

return $object['contents'];
    }

/**
     * @inheritdoc
     */
    public function readStream($path)
    {
        $path = Util::normalizePath($path);
        $this->assertPresent($path);

if ( ! $object = $this->getAdapter()->readStream($path)) {
            return false;
        }

return $object['stream'];
    }

/**
     * @inheritdoc
     */
    public function rename($path, $newpath)
    {
        $path = Util::normalizePath($path);
        $newpath = Util::normalizePath($newpath);
        $this->assertPresent($path);
        $this->assertAbsent($newpath);

return (bool) $this->getAdapter()->rename($path, $newpath);
    }

/**
     * @inheritdoc
     */
    public function copy($path, $newpath)
    {
        $path = Util::normalizePath($path);
        $newpath = Util::normalizePath($newpath);
        $this->assertPresent($path);
        $this->assertAbsent($newpath);

return $this->getAdapter()->copy($path, $newpath);
    }

/**
     * @inheritdoc
     */
    public function delete($path)
    {
        $path = Util::normalizePath($path);
        $this->assertPresent($path);

return $this->getAdapter()->delete($path);
    }

/**
     * @inheritdoc
     */
    public function deleteDir($dirname)
    {
        $dirname = Util::normalizePath($dirname);

if ($dirname === '') {
            throw new RootViolationException('Root directories can not be deleted.');
        }

return (bool) $this->getAdapter()->deleteDir($dirname);
    }

/**
     * @inheritdoc
     */
    public function createDir($dirname, array $config = [])
    {
        $dirname = Util::normalizePath($dirname);
        $config = $this->prepareConfig($config);

return (bool) $this->getAdapter()->createDir($dirname, $config);
    }

/**
     * @inheritdoc
     */
    public function listContents($directory = '', $recursive = false)
    {
        $directory = Util::normalizePath($directory);
        $contents = $this->getAdapter()->listContents($directory, $recursive);

return (new ContentListingFormatter($directory, $recursive))->formatListing($contents);
    }

/**
     * @inheritdoc
     */
    public function getMimetype($path)
    {
        $path = Util::normalizePath($path);
        $this->assertPresent($path);

if (( ! $object = $this->getAdapter()->getMimetype($path)) || ! array_key_exists('mimetype', $object)) {
            return false;
        }

return $object['mimetype'];
    }

/**
     * @inheritdoc
     */
    public function getTimestamp($path)
    {
        $path = Util::normalizePath($path);
        $this->assertPresent($path);

if (( ! $object = $this->getAdapter()->getTimestamp($path)) || ! array_key_exists('timestamp', $object)) {
            return false;
        }

return $object['timestamp'];
    }

/**
     * @inheritdoc
     */
    public function getVisibility($path)
    {
        $path = Util::normalizePath($path);
        $this->assertPresent($path);

if (( ! $object = $this->getAdapter()->getVisibility($path)) || ! array_key_exists('visibility', $object)) {
            return false;
        }

return $object['visibility'];
    }

/**
     * @inheritdoc
     */
    public function getSize($path)
    {
        $path = Util::normalizePath($path);
        $this->assertPresent($path);

if (( ! $object = $this->getAdapter()->getSize($path)) || ! array_key_exists('size', $object)) {
            return false;
        }

return (int) $object['size'];
    }

/**
     * @inheritdoc
     */
    public function setVisibility($path, $visibility)
    {
        $path = Util::normalizePath($path);
        $this->assertPresent($path);

return (bool) $this->getAdapter()->setVisibility($path, $visibility);
    }

/**
     * @inheritdoc
     */
    public function getMetadata($path)
    {
        $path = Util::normalizePath($path);
        $this->assertPresent($path);

return $this->getAdapter()->getMetadata($path);
    }

/**
     * @inheritdoc
     */
    public function get($path, Handler $handler = null)
    {
        $path = Util::normalizePath($path);

if ( ! $handler) {
            $metadata = $this->getMetadata($path);
            $handler = $metadata['type'] === 'file' ? new File($this, $path) : new Directory($this, $path);
        }

$handler->setPath($path);
        $handler->setFilesystem($this);

return $handler;
    }

/**
     * Assert a file is present.
     *
     * @param string $path path to file
     *
     * @throws FileNotFoundException
     *
     * @return void
     */
    public function assertPresent($path)
    {
        if ($this->config->get('disable_asserts', false) === false && ! $this->has($path)) {
            throw new FileNotFoundException($path);
        }
    }

/**
     * Assert a file is absent.
     *
     * @param string $path path to file
     *
     * @throws FileExistsException
     *
     * @return void
     */
    public function assertAbsent($path)
    {
        if ($this->config->get('disable_asserts', false) === false && $this->has($path)) {
            throw new FileExistsException($path);
        }
    }
}