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<?php /* * This file is part of Composer. * * (c) Nils Adermann <[email protected]> * Jordi Boggiano <[email protected]> * * 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 <[email protected]> * @author Jordi Boggiano <[email protected]> */ 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 * * @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); }