Adding upstream version 0.13.1.upstream/0.13.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 729 insertions, 0 deletions

diff --git a/vendor/cweagans/composer-patches/composer.json b/vendor/cweagans/composer-patches/composer.json
new file mode 100644
index 0000000..1565b02
--- /dev/null
+++ b/vendor/cweagans/composer-patches/composer.json
@@ -0,0 +1,30 @@
+{
+  "name": "cweagans/composer-patches",
+  "description": "Provides a way to patch Composer packages.",
+  "minimum-stability": "dev",
+  "license": "BSD-3-Clause",
+  "type": "composer-plugin",
+  "extra": {
+    "class": "cweagans\\Composer\\Patches"
+  },
+  "authors": [
+    {
+      "name": "Cameron Eagans",
+      "email": "me@cweagans.net"
+    }
+  ],
+  "require": {
+    "php": ">=5.3.0",
+    "composer-plugin-api": "^1.0 || ^2.0"
+  },
+  "require-dev": {
+    "composer/composer": "~1.0 || ~2.0",
+    "phpunit/phpunit": "~4.6"
+  },
+  "autoload": {
+    "psr-4": {"cweagans\\Composer\\": "src"}
+  },
+  "autoload-dev": {
+    "psr-4": {"cweagans\\Composer\\Tests\\": "tests"}
+  }
+}
diff --git a/vendor/cweagans/composer-patches/src/PatchEvent.php b/vendor/cweagans/composer-patches/src/PatchEvent.php
new file mode 100644
index 0000000..31d36f8
--- /dev/null
+++ b/vendor/cweagans/composer-patches/src/PatchEvent.php
@@ -0,0 +1,70 @@
+<?php
+
+/**
+ * @file
+ * Dispatch events when patches are applied.
+ */
+
+namespace cweagans\Composer;
+
+use Composer\EventDispatcher\Event;
+use Composer\Package\PackageInterface;
+
+class PatchEvent extends Event {
+
+ /**
+  * @var PackageInterface $package
+  */
+ protected $package;
+ /**
+  * @var string $url
+  */
+ protected $url;
+ /**
+  * @var string $description
+  */
+ protected $description;
+
+  /**
+   * Constructs a PatchEvent object.
+   *
+   * @param string $eventName
+   * @param PackageInterface $package
+   * @param string $url
+   * @param string $description
+   */
+  public function __construct($eventName, PackageInterface $package, $url, $description) {
+    parent::__construct($eventName);
+    $this->package = $package;
+    $this->url = $url;
+    $this->description = $description;
+  }
+
+  /**
+   * Returns the package that is patched.
+   *
+   * @return PackageInterface
+   */
+  public function getPackage() {
+    return $this->package;
+  }
+
+  /**
+   * Returns the url of the patch.
+   *
+   * @return string
+   */
+  public function getUrl() {
+    return $this->url;
+  }
+
+  /**
+   * Returns the description of the patch.
+   *
+   * @return string
+   */
+  public function getDescription() {
+    return $this->description;
+  }
+
+}
diff --git a/vendor/cweagans/composer-patches/src/PatchEvents.php b/vendor/cweagans/composer-patches/src/PatchEvents.php
new file mode 100644
index 0000000..ecee947
--- /dev/null
+++ b/vendor/cweagans/composer-patches/src/PatchEvents.php
@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * @file
+ * Dispatch events when patches are applied.
+ */
+
+namespace cweagans\Composer;
+
+class PatchEvents {
+
+  /**
+   * The PRE_PATCH_APPLY event occurs before a patch is applied.
+   *
+   * The event listener method receives a cweagans\Composer\PatchEvent instance.
+   *
+   * @var string
+   */
+  const PRE_PATCH_APPLY = 'pre-patch-apply';
+
+  /**
+   * The POST_PATCH_APPLY event occurs after a patch is applied.
+   *
+   * The event listener method receives a cweagans\Composer\PatchEvent instance.
+   *
+   * @var string
+   */
+  const POST_PATCH_APPLY = 'post-patch-apply';
+
+}
diff --git a/vendor/cweagans/composer-patches/src/Patches.php b/vendor/cweagans/composer-patches/src/Patches.php
new file mode 100644
index 0000000..3d7d864
--- /dev/null
+++ b/vendor/cweagans/composer-patches/src/Patches.php
@@ -0,0 +1,599 @@
+<?php
+
+/**
+ * @file
+ * Provides a way to patch Composer packages after installation.
+ */
+
+namespace cweagans\Composer;
+
+use Composer\Composer;
+use Composer\DependencyResolver\Operation\InstallOperation;
+use Composer\DependencyResolver\Operation\UninstallOperation;
+use Composer\DependencyResolver\Operation\UpdateOperation;
+use Composer\DependencyResolver\Operation\OperationInterface;
+use Composer\EventDispatcher\EventSubscriberInterface;
+use Composer\IO\IOInterface;
+use Composer\Package\AliasPackage;
+use Composer\Package\PackageInterface;
+use Composer\Plugin\PluginInterface;
+use Composer\Installer\PackageEvents;
+use Composer\Script\Event;
+use Composer\Script\ScriptEvents;
+use Composer\Installer\PackageEvent;
+use Composer\Util\ProcessExecutor;
+use Composer\Util\RemoteFilesystem;
+use Symfony\Component\Process\Process;
+
+class Patches implements PluginInterface, EventSubscriberInterface {
+
+  /**
+   * @var Composer $composer
+   */
+  protected $composer;
+  /**
+   * @var IOInterface $io
+   */
+  protected $io;
+  /**
+   * @var EventDispatcher $eventDispatcher
+   */
+  protected $eventDispatcher;
+  /**
+   * @var ProcessExecutor $executor
+   */
+  protected $executor;
+  /**
+   * @var array $patches
+   */
+  protected $patches;
+
+  /**
+   * @var array $installedPatches
+   */
+  protected $installedPatches;
+
+  /**
+   * Apply plugin modifications to composer
+   *
+   * @param Composer    $composer
+   * @param IOInterface $io
+   */
+  public function activate(Composer $composer, IOInterface $io) {
+    $this->composer = $composer;
+    $this->io = $io;
+    $this->eventDispatcher = $composer->getEventDispatcher();
+    $this->executor = new ProcessExecutor($this->io);
+    $this->patches = array();
+    $this->installedPatches = array();
+  }
+
+  /**
+   * Returns an array of event names this subscriber wants to listen to.
+   */
+  public static function getSubscribedEvents() {
+    return array(
+      ScriptEvents::PRE_INSTALL_CMD => array('checkPatches'),
+      ScriptEvents::PRE_UPDATE_CMD => array('checkPatches'),
+      PackageEvents::PRE_PACKAGE_INSTALL => array('gatherPatches'),
+      PackageEvents::PRE_PACKAGE_UPDATE => array('gatherPatches'),
+      // The following is a higher weight for compatibility with
+      // https://github.com/AydinHassan/magento-core-composer-installer and more generally for compatibility with
+      // every Composer plugin which deploys downloaded packages to other locations.
+      // In such cases you want that those plugins deploy patched files so they have to run after
+      // the "composer-patches" plugin.
+      // @see: https://github.com/cweagans/composer-patches/pull/153
+      PackageEvents::POST_PACKAGE_INSTALL => array('postInstall', 10),
+      PackageEvents::POST_PACKAGE_UPDATE => array('postInstall', 10),
+    );
+  }
+
+  /**
+   * Before running composer install,
+   * @param Event $event
+   */
+  public function checkPatches(Event $event) {
+    if (!$this->isPatchingEnabled()) {
+      return;
+    }
+
+    try {
+      $repositoryManager = $this->composer->getRepositoryManager();
+      $localRepository = $repositoryManager->getLocalRepository();
+      $installationManager = $this->composer->getInstallationManager();
+      $packages = $localRepository->getPackages();
+
+      $extra = $this->composer->getPackage()->getExtra();
+      $patches_ignore = isset($extra['patches-ignore']) ? $extra['patches-ignore'] : array();
+
+      $tmp_patches = $this->grabPatches();
+      foreach ($packages as $package) {
+        $extra = $package->getExtra();
+        if (isset($extra['patches'])) {
+          if (isset($patches_ignore[$package->getName()])) {
+            foreach ($patches_ignore[$package->getName()] as $package_name => $patches) {
+              if (isset($extra['patches'][$package_name])) {
+                $extra['patches'][$package_name] = array_diff($extra['patches'][$package_name], $patches);
+              }
+            }
+          }
+          $this->installedPatches[$package->getName()] = $extra['patches'];
+        }
+        $patches = isset($extra['patches']) ? $extra['patches'] : array();
+        $tmp_patches = $this->arrayMergeRecursiveDistinct($tmp_patches, $patches);
+      }
+
+      if ($tmp_patches == FALSE) {
+        $this->io->write('<info>No patches supplied.</info>');
+        return;
+      }
+
+      // Remove packages for which the patch set has changed.
+      $promises = array();
+      foreach ($packages as $package) {
+        if (!($package instanceof AliasPackage)) {
+          $package_name = $package->getName();
+          $extra = $package->getExtra();
+          $has_patches = isset($tmp_patches[$package_name]);
+          $has_applied_patches = isset($extra['patches_applied']) && count($extra['patches_applied']) > 0;
+          if (($has_patches && !$has_applied_patches)
+            || (!$has_patches && $has_applied_patches)
+            || ($has_patches && $has_applied_patches && $tmp_patches[$package_name] !== $extra['patches_applied'])) {
+            $uninstallOperation = new UninstallOperation($package, 'Removing package so it can be re-installed and re-patched.');
+            $this->io->write('<info>Removing package ' . $package_name . ' so that it can be re-installed and re-patched.</info>');
+            $promises[] = $installationManager->uninstall($localRepository, $uninstallOperation);
+          }
+        }
+      }
+      $promises = array_filter($promises);
+      if ($promises) {
+        $this->composer->getLoop()->wait($promises);
+      }
+    }
+    // If the Locker isn't available, then we don't need to do this.
+    // It's the first time packages have been installed.
+    catch (\LogicException $e) {
+      return;
+    }
+  }
+
+  /**
+   * Gather patches from dependencies and store them for later use.
+   *
+   * @param PackageEvent $event
+   */
+  public function gatherPatches(PackageEvent $event) {
+    // If we've already done this, then don't do it again.
+    if (isset($this->patches['_patchesGathered'])) {
+      $this->io->write('<info>Patches already gathered. Skipping</info>', TRUE, IOInterface::VERBOSE);
+      return;
+    }
+    // If patching has been disabled, bail out here.
+    elseif (!$this->isPatchingEnabled()) {
+      $this->io->write('<info>Patching is disabled. Skipping.</info>', TRUE, IOInterface::VERBOSE);
+      return;
+    }
+
+    $this->patches = $this->grabPatches();
+    if (empty($this->patches)) {
+      $this->io->write('<info>No patches supplied.</info>');
+    }
+
+    $extra = $this->composer->getPackage()->getExtra();
+    $patches_ignore = isset($extra['patches-ignore']) ? $extra['patches-ignore'] : array();
+
+    // Now add all the patches from dependencies that will be installed.
+    $operations = $event->getOperations();
+    $this->io->write('<info>Gathering patches for dependencies. This might take a minute.</info>');
+    foreach ($operations as $operation) {
+      if ($operation instanceof InstallOperation || $operation instanceof UpdateOperation) {
+        $package = $this->getPackageFromOperation($operation);
+        $extra = $package->getExtra();
+        if (isset($extra['patches'])) {
+          if (isset($patches_ignore[$package->getName()])) {
+            foreach ($patches_ignore[$package->getName()] as $package_name => $patches) {
+              if (isset($extra['patches'][$package_name])) {
+                $extra['patches'][$package_name] = array_diff($extra['patches'][$package_name], $patches);
+              }
+            }
+          }
+          $this->patches = $this->arrayMergeRecursiveDistinct($this->patches, $extra['patches']);
+        }
+        // Unset installed patches for this package
+        if(isset($this->installedPatches[$package->getName()])) {
+          unset($this->installedPatches[$package->getName()]);
+        }
+      }
+    }
+
+    // Merge installed patches from dependencies that did not receive an update.
+    foreach ($this->installedPatches as $patches) {
+      $this->patches = $this->arrayMergeRecursiveDistinct($this->patches, $patches);
+    }
+
+    // If we're in verbose mode, list the projects we're going to patch.
+    if ($this->io->isVerbose()) {
+      foreach ($this->patches as $package => $patches) {
+        $number = count($patches);
+        $this->io->write('<info>Found ' . $number . ' patches for ' . $package . '.</info>');
+      }
+    }
+
+    // Make sure we don't gather patches again. Extra keys in $this->patches
+    // won't hurt anything, so we'll just stash it there.
+    $this->patches['_patchesGathered'] = TRUE;
+  }
+
+  /**
+   * Get the patches from root composer or external file
+   * @return Patches
+   * @throws \Exception
+   */
+  public function grabPatches() {
+      // First, try to get the patches from the root composer.json.
+    $extra = $this->composer->getPackage()->getExtra();
+    if (isset($extra['patches'])) {
+      $this->io->write('<info>Gathering patches for root package.</info>');
+      $patches = $extra['patches'];
+      return $patches;
+    }
+    // If it's not specified there, look for a patches-file definition.
+    elseif (isset($extra['patches-file'])) {
+      $this->io->write('<info>Gathering patches from patch file.</info>');
+      $patches = file_get_contents($extra['patches-file']);
+      $patches = json_decode($patches, TRUE);
+      $error = json_last_error();
+      if ($error != 0) {
+        switch ($error) {
+          case JSON_ERROR_DEPTH:
+            $msg = ' - Maximum stack depth exceeded';
+            break;
+          case JSON_ERROR_STATE_MISMATCH:
+            $msg =  ' - Underflow or the modes mismatch';
+            break;
+          case JSON_ERROR_CTRL_CHAR:
+            $msg = ' - Unexpected control character found';
+            break;
+          case JSON_ERROR_SYNTAX:
+            $msg =  ' - Syntax error, malformed JSON';
+            break;
+          case JSON_ERROR_UTF8:
+            $msg =  ' - Malformed UTF-8 characters, possibly incorrectly encoded';
+            break;
+          default:
+            $msg =  ' - Unknown error';
+            break;
+          }
+          throw new \Exception('There was an error in the supplied patches file:' . $msg);
+        }
+      if (isset($patches['patches'])) {
+        $patches = $patches['patches'];
+        return $patches;
+      }
+      elseif(!$patches) {
+        throw new \Exception('There was an error in the supplied patch file');
+      }
+    }
+    else {
+      return array();
+    }
+  }
+
+  /**
+   * @param PackageEvent $event
+   * @throws \Exception
+   */
+  public function postInstall(PackageEvent $event) {
+
+    // Check if we should exit in failure.
+    $extra = $this->composer->getPackage()->getExtra();
+    $exitOnFailure = getenv('COMPOSER_EXIT_ON_PATCH_FAILURE') || !empty($extra['composer-exit-on-patch-failure']);
+    $skipReporting = getenv('COMPOSER_PATCHES_SKIP_REPORTING') || !empty($extra['composer-patches-skip-reporting']);
+
+    // Get the package object for the current operation.
+    $operation = $event->getOperation();
+    /** @var PackageInterface $package */
+    $package = $this->getPackageFromOperation($operation);
+    $package_name = $package->getName();
+
+    if (!isset($this->patches[$package_name])) {
+      if ($this->io->isVerbose()) {
+        $this->io->write('<info>No patches found for ' . $package_name . '.</info>');
+      }
+      return;
+    }
+    $this->io->write('  - Applying patches for <info>' . $package_name . '</info>');
+
+    // Get the install path from the package object.
+    $manager = $event->getComposer()->getInstallationManager();
+    $install_path = $manager->getInstaller($package->getType())->getInstallPath($package);
+
+    // Set up a downloader.
+    $downloader = new RemoteFilesystem($this->io, $this->composer->getConfig());
+
+    // Track applied patches in the package info in installed.json
+    $localRepository = $this->composer->getRepositoryManager()->getLocalRepository();
+    $localPackage = $localRepository->findPackage($package_name, $package->getVersion());
+    $extra = $localPackage->getExtra();
+    $extra['patches_applied'] = array();
+
+    foreach ($this->patches[$package_name] as $description => $url) {
+      $this->io->write('    <info>' . $url . '</info> (<comment>' . $description. '</comment>)');
+      try {
+        $this->eventDispatcher->dispatch(NULL, new PatchEvent(PatchEvents::PRE_PATCH_APPLY, $package, $url, $description));
+        $this->getAndApplyPatch($downloader, $install_path, $url, $package);
+        $this->eventDispatcher->dispatch(NULL, new PatchEvent(PatchEvents::POST_PATCH_APPLY, $package, $url, $description));
+        $extra['patches_applied'][$description] = $url;
+      }
+      catch (\Exception $e) {
+        $this->io->write('   <error>Could not apply patch! Skipping. The error was: ' . $e->getMessage() . '</error>');
+        if ($exitOnFailure) {
+          throw new \Exception("Cannot apply patch $description ($url)!");
+        }
+      }
+    }
+    $localPackage->setExtra($extra);
+
+    $this->io->write('');
+
+    if (true !== $skipReporting) {
+      $this->writePatchReport($this->patches[$package_name], $install_path);
+    }
+  }
+
+  /**
+   * Get a Package object from an OperationInterface object.
+   *
+   * @param OperationInterface $operation
+   * @return PackageInterface
+   * @throws \Exception
+   */
+  protected function getPackageFromOperation(OperationInterface $operation) {
+    if ($operation instanceof InstallOperation) {
+      $package = $operation->getPackage();
+    }
+    elseif ($operation instanceof UpdateOperation) {
+      $package = $operation->getTargetPackage();
+    }
+    else {
+      throw new \Exception('Unknown operation: ' . get_class($operation));
+    }
+
+    return $package;
+  }
+
+  /**
+   * Apply a patch on code in the specified directory.
+   *
+   * @param RemoteFilesystem $downloader
+   * @param $install_path
+   * @param $patch_url
+   * @param PackageInterface $package
+   * @throws \Exception
+   */
+  protected function getAndApplyPatch(RemoteFilesystem $downloader, $install_path, $patch_url, PackageInterface $package) {
+
+    // Local patch file.
+    if (file_exists($patch_url)) {
+      $filename = realpath($patch_url);
+    }
+    else {
+      // Generate random (but not cryptographically so) filename.
+      $filename = uniqid(sys_get_temp_dir().'/') . ".patch";
+
+      // Download file from remote filesystem to this location.
+      $hostname = parse_url($patch_url, PHP_URL_HOST);
+
+      try {
+        $downloader->copy($hostname, $patch_url, $filename, false);
+      } catch (\Exception $e) {
+        // In case of an exception, retry once as the download might
+        // have failed due to intermittent network issues.
+        $downloader->copy($hostname, $patch_url, $filename, false);
+      }
+    }
+
+    // The order here is intentional. p1 is most likely to apply with git apply.
+    // p0 is next likely. p2 is extremely unlikely, but for some special cases,
+    // it might be useful. p4 is useful for Magento 2 patches
+    $patch_levels = array('-p1', '-p0', '-p2', '-p4');
+
+    // Check for specified patch level for this package.
+    $extra = $this->composer->getPackage()->getExtra();
+    if (!empty($extra['patchLevel'][$package->getName()])){
+      $patch_levels = array($extra['patchLevel'][$package->getName()]);
+    }
+    // Attempt to apply with git apply.
+    $patched = $this->applyPatchWithGit($install_path, $patch_levels, $filename);
+
+    // In some rare cases, git will fail to apply a patch, fallback to using
+    // the 'patch' command.
+    if (!$patched) {
+      foreach ($patch_levels as $patch_level) {
+        // --no-backup-if-mismatch here is a hack that fixes some
+        // differences between how patch works on windows and unix.
+        if ($patched = $this->executeCommand("patch %s --no-backup-if-mismatch -d %s < %s", $patch_level, $install_path, $filename)) {
+          break;
+        }
+      }
+    }
+
+    // Clean up the temporary patch file.
+    if (isset($hostname)) {
+      unlink($filename);
+    }
+    // If the patch *still* isn't applied, then give up and throw an Exception.
+    // Otherwise, let the user know it worked.
+    if (!$patched) {
+      throw new \Exception("Cannot apply patch $patch_url");
+    }
+  }
+
+  /**
+   * Checks if the root package enables patching.
+   *
+   * @return bool
+   *   Whether patching is enabled. Defaults to TRUE.
+   */
+  protected function isPatchingEnabled() {
+    $extra = $this->composer->getPackage()->getExtra();
+
+    if (empty($extra['patches']) && empty($extra['patches-ignore']) && !isset($extra['patches-file'])) {
+      // The root package has no patches of its own, so only allow patching if
+      // it has specifically opted in.
+      return isset($extra['enable-patching']) ? $extra['enable-patching'] : FALSE;
+    }
+    else {
+      return TRUE;
+    }
+  }
+
+  /**
+   * Writes a patch report to the target directory.
+   *
+   * @param array $patches
+   * @param string $directory
+   */
+  protected function writePatchReport($patches, $directory) {
+    $output = "This file was automatically generated by Composer Patches (https://github.com/cweagans/composer-patches)\n";
+    $output .= "Patches applied to this directory:\n\n";
+    foreach ($patches as $description => $url) {
+      $output .= $description . "\n";
+      $output .= 'Source: ' . $url . "\n\n\n";
+    }
+    file_put_contents($directory . "/PATCHES.txt", $output);
+  }
+
+  /**
+   * Executes a shell command with escaping.
+   *
+   * @param string $cmd
+   * @return bool
+   */
+  protected function executeCommand($cmd) {
+    // Shell-escape all arguments except the command.
+    $args = func_get_args();
+    foreach ($args as $index => $arg) {
+      if ($index !== 0) {
+        $args[$index] = escapeshellarg($arg);
+      }
+    }
+
+    // And replace the arguments.
+    $command = call_user_func_array('sprintf', $args);
+    $output = '';
+    if ($this->io->isVerbose()) {
+      $this->io->write('<comment>' . $command . '</comment>');
+      $io = $this->io;
+      $output = function ($type, $data) use ($io) {
+        if ($type == Process::ERR) {
+          $io->write('<error>' . $data . '</error>');
+        }
+        else {
+          $io->write('<comment>' . $data . '</comment>');
+        }
+      };
+    }
+    return ($this->executor->execute($command, $output) == 0);
+  }
+
+  /**
+   * Recursively merge arrays without changing data types of values.
+   *
+   * Does not change the data types of the values in the arrays. Matching keys'
+   * values in the second array overwrite those in the first array, as is the
+   * case with array_merge.
+   *
+   * @param array $array1
+   *   The first array.
+   * @param array $array2
+   *   The second array.
+   * @return array
+   *   The merged array.
+   *
+   * @see http://php.net/manual/en/function.array-merge-recursive.php#92195
+   */
+  protected function arrayMergeRecursiveDistinct(array $array1, array $array2) {
+    $merged = $array1;
+
+    foreach ($array2 as $key => &$value) {
+      if (is_array($value) && isset($merged[$key]) && is_array($merged[$key])) {
+        $merged[$key] = $this->arrayMergeRecursiveDistinct($merged[$key], $value);
+      }
+      else {
+        $merged[$key] = $value;
+      }
+    }
+
+    return $merged;
+  }
+
+  /**
+   * Attempts to apply a patch with git apply.
+   *
+   * @param $install_path
+   * @param $patch_levels
+   * @param $filename
+   *
+   * @return bool
+   *   TRUE if patch was applied, FALSE otherwise.
+   */
+  protected function applyPatchWithGit($install_path, $patch_levels, $filename) {
+    // Do not use git apply unless the install path is itself a git repo
+    // @see https://stackoverflow.com/a/27283285
+    if (!is_dir($install_path . '/.git')) {
+      return FALSE;
+    }
+
+    $patched = FALSE;
+    foreach ($patch_levels as $patch_level) {
+      if ($this->io->isVerbose()) {
+        $comment = 'Testing ability to patch with git apply.';
+        $comment .= ' This command may produce errors that can be safely ignored.';
+        $this->io->write('<comment>' . $comment . '</comment>');
+      }
+      $checked = $this->executeCommand('git -C %s apply --check -v %s %s', $install_path, $patch_level, $filename);
+      $output = $this->executor->getErrorOutput();
+      if (substr($output, 0, 7) == 'Skipped') {
+        // Git will indicate success but silently skip patches in some scenarios.
+        //
+        // @see https://github.com/cweagans/composer-patches/pull/165
+        $checked = FALSE;
+      }
+      if ($checked) {
+        // Apply the first successful style.
+        $patched = $this->executeCommand('git -C %s apply %s %s', $install_path, $patch_level, $filename);
+        break;
+      }
+    }
+    return $patched;
+  }
+
+  /**
+   * Indicates if a package has been patched.
+   *
+   * @param \Composer\Package\PackageInterface $package
+   *   The package to check.
+   *
+   * @return bool
+   *   TRUE if the package has been patched.
+   */
+  public static function isPackagePatched(PackageInterface $package) {
+    return array_key_exists('patches_applied', $package->getExtra());
+  }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function deactivate(Composer $composer, IOInterface $io)
+    {
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function uninstall(Composer $composer, IOInterface $io)
+    {
+    }
+
+}