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[yaffs-website] / vendor / drush / drush / lib / Drush / Config / CoreExtensionFilter.php

diff --git a/vendor/drush/drush/lib/Drush/Config/CoreExtensionFilter.php b/vendor/drush/drush/lib/Drush/Config/CoreExtensionFilter.php
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+++ b/vendor/drush/drush/lib/Drush/Config/CoreExtensionFilter.php
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+<?php
+
+/**
+ * @file
+ * Definition of Drush\Config\StorageFilter.
+ */
+
+namespace Drush\Config;
+
+use Drupal\Core\Config\StorageInterface;
+
+/**
+ * This filter adjusts the data going to and coming from
+ * the core.extension configuration object.
+ *
+ * Modules named in this list are ignored during config-import
+ * and config-export operations.  What this means in practical terms is:
+ *
+ *   * During a 'read' operation, if a named module is enabled in the
+ *     active configuration, then it will remain enabled after the
+ *     import.  If it is disabled in the active configuration, then it
+ *     will remain disabled.  The value from the data being imported
+ *     is ignored.
+ *
+ *   * During a 'write' operation, if a named module is enabled in
+ *     the configuration already written out on the target storage
+ *     object, then it will remain enabled.  If it is disabled in
+ *     the previously-exported data, then it will remain disabled.  If
+ *     there is no existing export (first-time export), then all of
+ *     the named modules will be excluded (disabled) from the export.
+ *     The current enabled / disabled state of the module in the
+ *     active configuration is ignored.
+ *
+ * The data from core.extension looks like this:
+ *
+ * module:
+ *   modulename: weight
+ * theme:
+ *   themename: weight
+ *
+ * The "adjustments" lists is just an array where the values
+ * are the module names to exclude from import / export, as
+ * described above.
+ */
+class CoreExtensionFilter implements StorageFilter {
+
+  protected $adjustments;
+
+  function __construct($adjustments = array()) {
+    $this->adjustments = $adjustments;
+  }
+
+  public function filterRead($name, $data) {
+    if ($name != 'core.extension') {
+      return $data;
+    }
+    $active_storage = \Drupal::service('config.storage');
+    return $this->filterOutIgnored($data, $active_storage->read($name));
+  }
+
+  public function filterWrite($name, array $data, StorageInterface $storage) {
+    if ($name != 'core.extension') {
+      return $data;
+    }
+    $originalData = $storage->read($name);
+    return $this->filterOutIgnored($data, $storage->read($name));
+  }
+
+  protected function filterOutIgnored($data, $originalData) {
+    foreach($this->adjustments as $module) {
+      if (is_array($originalData) && array_key_exists($module, $originalData['module'])) {
+        $data['module'][$module] = $originalData['module'][$module];
+      }
+      else {
+        unset($data['module'][$module]);
+      }
+    }
+    return $data;
+
+  }
+}