Add custom installer for drupal-console-library type (#22)

composer.json

@@ -14,6 +14,7 @@
     },
     "require": {
         "composer-plugin-api": "^1.0",
+        "composer/installers": "^1.2",
         "symfony/yaml": "~2.7|~3.0",
         "symfony/finder": "~2.7|~3.0"
     },

src/DrupalConsoleInstaller.php

@@ -0,0 +1,19 @@
+<?php
+namespace Drupal\Console\Composer\Plugin;
+
+use Composer\Installers\BaseInstaller;
+
+/**
+ * Class DemoInstaller
+ *
+ * @package Composer\Installers
+ */
+class DrupalConsoleInstaller extends BaseInstaller
+{
+  /**
+   * @var array
+   */
+  protected $locations = array(
+    'console-library' => 'vendor/drupal/{$name}/',
+  );
+}

src/Extender.php

@@ -38,6 +38,11 @@ public function activate(Composer $composer, IOInterface $io)
     {
         $this->composer = $composer;
         $this->io = $io;
+
+      $installer = new Installer($io, $composer);
+
+      $composer->getInstallationManager()->addInstaller($installer);
+
     }
 
     /**

src/Installer.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace Drupal\Console\Composer\Plugin;
+
+use Composer\IO\IOInterface;
+use Composer\Package\PackageInterface;
+use Composer\Installers\Installer as BaseInstaller;
+
+class Installer extends BaseInstaller
+{
+
+  /**
+   * Package types to installer class map
+   *
+   * @var array
+   */
+  private $supportedTypes = array(
+    'drupal' => 'DrupalConsoleInstaller'
+  );
+
+  /**
+   * {@inheritDoc}
+   */
+  public function getInstallPath(PackageInterface $package)
+  {
+    $type = $package->getType();
+    $frameworkType = $this->findFrameworkType($type);
+
+    if ($frameworkType === false) {
+      throw new \InvalidArgumentException(
+        'Sorry the package type of this package is not yet supported.'
+      );
+    }
+
+    $class = 'Drupal\\Console\\Composer\\Plugin\\' . $this->supportedTypes[$frameworkType];
+    $installer = new $class($package, $this->composer, $this->getIO());
+
+    return $installer->getInstallPath($package, $frameworkType);
+  }
+
+  /**
+   * Get the second part of the regular expression to check for support of a
+   * package type
+   *
+   * @param  string $frameworkType
+   * @return string
+   */
+  protected function getLocationPattern($frameworkType)
+  {
+    $pattern = false;
+    if (!empty($this->supportedTypes[$frameworkType])) {
+      $frameworkClass = 'Drupal\\Console\\Composer\\Plugin\\' . $this->supportedTypes[$frameworkType];
+      /** @var BaseInstaller $framework */
+      $framework = new $frameworkClass(null, $this->composer, $this->getIO());
+      $locations = array_keys($framework->getLocations());
+      $pattern = $locations ? '(' . implode('|', $locations) . ')' : false;
+    }
+
+    return $pattern ? : '(\w+)';
+  }
+
+  /**
+   * Get I/O object
+   *
+   * @return IOInterface
+   */
+  private function getIO()
+  {
+    return $this->io;
+  }
+}