#7 Implement base theme support

src/Handler.php

@@ -124,7 +124,10 @@ class Handler
           ->getExtra() + ['theme-d8-sass' => []];
       $this->options = array_replace_recursive([
         'project_name' => 'mytheme',
-        'copy_starterkit' => true,
+        'base_theme' => [
+          'name' => 'bartik',
+          'import' => [],
+        ],
         'bower_assets' => [
           'global' => false,
           'fonts' => [],
@@ -222,6 +225,7 @@ class Handler
     if (empty($string)) {
       return '';
     }
+    $string = str_replace('THEMENAME', '{{ project_name }}', $string);
 
     $this->twig_loader->setTemplate('fixed', $string);
     return str_replace('"', '"', $this->twig->render('fixed', $this->getOptions()));
@@ -330,18 +334,18 @@ class Handler
       $finder = new Finder();
       $finder->ignoreDotFiles(FALSE);
 
-      # TODO: Replace this with the base_theme settings from composer.json
-      # TODO: Those settings also need to go into default settings above
-        // Copy all files
-        $this->copyFiles($fs, $finder, $pluginRoot . '/templates', $destination);
-        if ($this->getOption('copy_starterkit')) {
-          // Copy Bootstrap base theme files
-          $bootstrapPackage = $this->getPackage('drupal/bootstrap');
-          if ($bootstrapPackage) {
-            $bootstrapRoot = $this->getInstallationManager()->getInstallPath($bootstrapPackage);
-            $this->copyFiles($fs, $finder, $bootstrapRoot . '/starterkits/sass', $destination);
-          }
+      // Copy all files
+      $this->copyFiles($fs, $finder, $pluginRoot . '/templates', $destination);
+
+      // Handle optional base theme
+      $baseTheme = $this->getOption('base_theme');
+      if (isset($baseTheme['package'])) {
+        $baseThemePackage = $this->getPackage($baseTheme['package']);
+        if ($baseThemePackage && isset($baseTheme['starterkit'])) {
+          $starterkitRoot = $this->getInstallationManager()->getInstallPath($baseThemePackage) . DIRECTORY_SEPARATOR . $baseTheme['starterkit'];
+          $this->copyFiles($fs, $finder, $starterkitRoot , $destination);
         }
+      }
 
       // Remove bower stuff if that's available globally
       if ($this->getOption('bower_assets')['global']) {

templates/{{ project_name }}.info.yml

 core: 8.x
 type: theme
-base theme: bartik
+base theme: {{ base_theme.name }}
 
 name: '{{ project_name }}'
 description: 'Drupal theme {{ project_name }}'