__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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<?php
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Composer\Downloader;
use Composer\Package\PackageInterface;
use React\Promise\PromiseInterface;
/**
* Downloader interface.
*
* @author Konstantin Kudryashov <ever.zet@gmail.com>
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
interface DownloaderInterface
{
/**
* Returns installation source (either source or dist).
*
* @return string "source" or "dist"
*/
public function getInstallationSource();
/**
* This should do any network-related tasks to prepare for an upcoming install/update
*
* @param string $path download path
* @return PromiseInterface|null
*/
public function download(PackageInterface $package, $path, PackageInterface $prevPackage = null);
/**
* Do anything that needs to be done between all downloads have been completed and the actual operation is executed
*
* All packages get first downloaded, then all together prepared, then all together installed/updated/uninstalled. Therefore
* for error recovery it is important to avoid failing during install/update/uninstall as much as possible, and risky things or
* user prompts should happen in the prepare step rather. In case of failure, cleanup() will be called so that changes can
* be undone as much as possible.
*
* @param string $type one of install/update/uninstall
* @param PackageInterface $package package instance
* @param string $path download path
* @param PackageInterface $prevPackage previous package instance in case of an update
* @return PromiseInterface|null
*/
public function prepare($type, PackageInterface $package, $path, PackageInterface $prevPackage = null);
/**
* Installs specific package into specific folder.
*
* @param PackageInterface $package package instance
* @param string $path download path
* @return PromiseInterface|null
*/
public function install(PackageInterface $package, $path);
/**
* Updates specific package in specific folder from initial to target version.
*
* @param PackageInterface $initial initial package
* @param PackageInterface $target updated package
* @param string $path download path
* @return PromiseInterface|null
*/
public function update(PackageInterface $initial, PackageInterface $target, $path);
/**
* Removes specific package from specific folder.
*
* @param PackageInterface $package package instance
* @param string $path download path
* @return PromiseInterface|null
*/
public function remove(PackageInterface $package, $path);
/**
* Do anything to cleanup changes applied in the prepare or install/update/uninstall steps
*
* Note that cleanup will be called for all packages, either after install/update/uninstall is complete,
* or if any package failed any operation. This is to give all installers a change to cleanup things
* they did previously, so you need to keep track of changes applied in the installer/downloader themselves.
*
* @param string $type one of install/update/uninstall
* @param PackageInterface $package package instance
* @param string $path download path
* @param PackageInterface $prevPackage previous package instance in case of an update
* @return PromiseInterface|null
*/
public function cleanup($type, PackageInterface $package, $path, PackageInterface $prevPackage = null);
}