Adds support for composer.json directives

Author: VangelisP

README.md

@@ -40,6 +40,7 @@ of your root `composer.json`.
   "extra": {
     "drupal-l10n": {
       "destination": "translations/contrib",
+      "core-only": true,
       "languages": [
         "fr",
         "es"
@@ -55,6 +56,9 @@ translation files. By default the destination is
 
 The `languages` parameter specify the languages you want to retrieve.
 
+The `core-only` parameter (default `false`) limits downloads to Drupal core
+translations only, and skips contrib modules/themes/profiles.
+
 ## Drupal configuration
 
 You can say to Drupal to not download translations files by updating your

src/Handler.php

@@ -150,6 +150,13 @@ public function downloadLocalization($dev = TRUE, array $packages = [], $coreOnl
 
     $webroot = realpath($this->getWebRoot());
 
+    // Collect options.
+    $options = $this->getOptions();
+
+    // The command line option takes precedence, but the composer.json setting
+    // can enable this mode as well.
+    $coreOnly = $coreOnly || !empty($options['core-only']);
+
     // Prepare a list of Drupal project to download the translations.
     $drupal_projects = [];
     if (empty($packages)) {
@@ -181,9 +188,6 @@ public function downloadLocalization($dev = TRUE, array $packages = [], $coreOnl
     // Get the Drupal core version.
     $core_version = $this->getDrupalCoreVersion($drupal_core_package);
 
-    // Collect options.
-    $options = $this->getOptions();
-
     $httpDownloader = new HttpDownloader($this->io, $this->composer->getConfig());
 
     $fetcher = new FileFetcher($this->io, $httpDownloader, $options, $core_version, $this->progress);
@@ -312,6 +316,7 @@ protected function getOptions() {
     $options = $extra['drupal-l10n'] + [
       'destination' => 'sites/default/files/translations',
       'languages' => [],
+      'core-only' => FALSE,
     ];
     return $options;
   }

tests/PluginTest.php

@@ -171,6 +171,38 @@ public function testCoreOnlyOption() {
     $this->assertFileDoesNotExist($contrib_translation_file, 'Contrib translation should not exist after --core-only command.');
   }
 
+  /**
+   * Tests that core-only option from composer.json skips contrib translations.
+   */
+  public function testCoreOnlyOptionFromComposerJson() {
+    $composer_json = $this->composerJsonDefaults();
+    $composer_json['extra']['drupal-l10n']['core-only'] = TRUE;
+    $this->writeComposerJson($composer_json);
+
+    $core_version = '9.5.3';
+    $contrib_module = 'entity_share';
+    $contrib_composer_version = '3.0.0-rc4';
+    $contrib_drupal_version = '8.x-3.0-rc4';
+    $translations_directory = $this->tmpDir . DIRECTORY_SEPARATOR . 'translations' . DIRECTORY_SEPARATOR . 'contrib';
+    $core_translation_file = $translations_directory . DIRECTORY_SEPARATOR . 'drupal-' . $core_version . '.fr.po';
+    $contrib_translation_file = $translations_directory . DIRECTORY_SEPARATOR . $contrib_module . '-' . $contrib_drupal_version . '.fr.po';
+
+    $this->composer('install');
+    $this->composer('require --update-with-dependencies drupal/core:"' . $core_version . '"');
+    $this->composer('require drupal/' . $contrib_module . ':"' . $contrib_composer_version . '"');
+    $this->assertFileExists($core_translation_file, 'Drupal core translation should exist after install.');
+    $this->assertFileExists($contrib_translation_file, 'Contrib translation should exist after install.');
+
+    $this->fs->remove($core_translation_file);
+    $this->fs->remove($contrib_translation_file);
+    $this->assertFileDoesNotExist($core_translation_file, 'Drupal core translation should not exist after removal.');
+    $this->assertFileDoesNotExist($contrib_translation_file, 'Contrib translation should not exist after removal.');
+
+    $this->composer('drupal:l10n');
+    $this->assertFileExists($core_translation_file, 'Drupal core translation should exist after composer.json core-only mode.');
+    $this->assertFileDoesNotExist($contrib_translation_file, 'Contrib translation should not exist after composer.json core-only mode.');
+  }
+
   /**
    * Tests that on Drupal 7, core and contrib modules are handled.
    */
@@ -219,8 +251,11 @@ public function testDrupal10() {
   /**
    * Writes the default composer json to the temp directory.
    */
-  protected function writeComposerJson() {
-    $json = json_encode($this->composerJsonDefaults(), JSON_PRETTY_PRINT);
+  protected function writeComposerJson(array $composer_json = NULL) {
+    if (is_null($composer_json)) {
+      $composer_json = $this->composerJsonDefaults();
+    }
+    $json = json_encode($composer_json, JSON_PRETTY_PRINT);
     // Write composer.json.
     file_put_contents($this->tmpDir . '/composer.json', $json);
   }