diff core/lib/Drupal/Core/Config/Config.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/Config/Config.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,306 @@
+<?php
+
+namespace Drupal\Core\Config;
+
+use Drupal\Component\Utility\NestedArray;
+use Drupal\Core\Cache\Cache;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+
+/**
+ * Defines the default configuration object.
+ *
+ * Encapsulates all capabilities needed for configuration handling for a
+ * specific configuration object, including support for runtime overrides. The
+ * overrides are handled on top of the stored configuration so they are not
+ * saved back to storage.
+ *
+ * @ingroup config_api
+ */
+class Config extends StorableConfigBase {
+
+  /**
+   * An event dispatcher instance to use for configuration events.
+   *
+   * @var \Symfony\Component\EventDispatcher\EventDispatcherInterface
+   */
+  protected $eventDispatcher;
+
+  /**
+   * The current runtime data.
+   *
+   * The configuration data from storage merged with module and settings
+   * overrides.
+   *
+   * @var array
+   */
+  protected $overriddenData;
+
+  /**
+   * The current module overrides.
+   *
+   * @var array
+   */
+  protected $moduleOverrides;
+
+  /**
+   * The current settings overrides.
+   *
+   * @var array
+   */
+  protected $settingsOverrides;
+
+  /**
+   * Constructs a configuration object.
+   *
+   * @param string $name
+   *   The name of the configuration object being constructed.
+   * @param \Drupal\Core\Config\StorageInterface $storage
+   *   A storage object to use for reading and writing the
+   *   configuration data.
+   * @param \Symfony\Component\EventDispatcher\EventDispatcherInterface $event_dispatcher
+   *   An event dispatcher instance to use for configuration events.
+   * @param \Drupal\Core\Config\TypedConfigManagerInterface $typed_config
+   *   The typed configuration manager service.
+   */
+  public function __construct($name, StorageInterface $storage, EventDispatcherInterface $event_dispatcher, TypedConfigManagerInterface $typed_config) {
+    $this->name = $name;
+    $this->storage = $storage;
+    $this->eventDispatcher = $event_dispatcher;
+    $this->typedConfigManager = $typed_config;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function initWithData(array $data) {
+    parent::initWithData($data);
+    $this->resetOverriddenData();
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function get($key = '') {
+    if (!isset($this->overriddenData)) {
+      $this->setOverriddenData();
+    }
+    if (empty($key)) {
+      return $this->overriddenData;
+    }
+    else {
+      $parts = explode('.', $key);
+      if (count($parts) == 1) {
+        return isset($this->overriddenData[$key]) ? $this->overriddenData[$key] : NULL;
+      }
+      else {
+        $value = NestedArray::getValue($this->overriddenData, $parts, $key_exists);
+        return $key_exists ? $value : NULL;
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setData(array $data) {
+    parent::setData($data);
+    $this->resetOverriddenData();
+    return $this;
+  }
+
+  /**
+   * Sets settings.php overrides for this configuration object.
+   *
+   * The overridden data only applies to this configuration object.
+   *
+   * @param array $data
+   *   The overridden values of the configuration data.
+   *
+   * @return \Drupal\Core\Config\Config
+   *   The configuration object.
+   */
+  public function setSettingsOverride(array $data) {
+    $this->settingsOverrides = $data;
+    $this->resetOverriddenData();
+    return $this;
+  }
+
+  /**
+   * Sets module overrides for this configuration object.
+   *
+   * @param array $data
+   *   The overridden values of the configuration data.
+   *
+   * @return \Drupal\Core\Config\Config
+   *   The configuration object.
+   */
+  public function setModuleOverride(array $data) {
+    $this->moduleOverrides = $data;
+    $this->resetOverriddenData();
+    return $this;
+  }
+
+  /**
+   * Sets the current data for this configuration object.
+   *
+   * Configuration overrides operate at two distinct layers: modules and
+   * settings.php. Overrides in settings.php take precedence over values
+   * provided by modules. Precedence or different module overrides is
+   * determined by the priority of the config.factory.override tagged services.
+   *
+   * @return \Drupal\Core\Config\Config
+   *   The configuration object.
+   */
+  protected function setOverriddenData() {
+    $this->overriddenData = $this->data;
+    if (isset($this->moduleOverrides) && is_array($this->moduleOverrides)) {
+      $this->overriddenData = NestedArray::mergeDeepArray([$this->overriddenData, $this->moduleOverrides], TRUE);
+    }
+    if (isset($this->settingsOverrides) && is_array($this->settingsOverrides)) {
+      $this->overriddenData = NestedArray::mergeDeepArray([$this->overriddenData, $this->settingsOverrides], TRUE);
+    }
+    return $this;
+  }
+
+  /**
+   * Resets the current data, so overrides are re-applied.
+   *
+   * This method should be called after the original data or the overridden data
+   * has been changed.
+   *
+   * @return \Drupal\Core\Config\Config
+   *   The configuration object.
+   */
+  protected function resetOverriddenData() {
+    unset($this->overriddenData);
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function set($key, $value) {
+    parent::set($key, $value);
+    $this->resetOverriddenData();
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function clear($key) {
+    parent::clear($key);
+    $this->resetOverriddenData();
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function save($has_trusted_data = FALSE) {
+    // Validate the configuration object name before saving.
+    static::validateName($this->name);
+
+    // If there is a schema for this configuration object, cast all values to
+    // conform to the schema.
+    if (!$has_trusted_data) {
+      if ($this->typedConfigManager->hasConfigSchema($this->name)) {
+        // Ensure that the schema wrapper has the latest data.
+        $this->schemaWrapper = NULL;
+        foreach ($this->data as $key => $value) {
+          $this->data[$key] = $this->castValue($key, $value);
+        }
+      }
+      else {
+        foreach ($this->data as $key => $value) {
+          $this->validateValue($key, $value);
+        }
+      }
+    }
+
+    $this->storage->write($this->name, $this->data);
+    if (!$this->isNew) {
+      Cache::invalidateTags($this->getCacheTags());
+    }
+    $this->isNew = FALSE;
+    $this->eventDispatcher->dispatch(ConfigEvents::SAVE, new ConfigCrudEvent($this));
+    $this->originalData = $this->data;
+    // Potentially configuration schema could have changed the underlying data's
+    // types.
+    $this->resetOverriddenData();
+    return $this;
+  }
+
+  /**
+   * Deletes the configuration object.
+   *
+   * @return \Drupal\Core\Config\Config
+   *   The configuration object.
+   */
+  public function delete() {
+    $this->data = [];
+    $this->storage->delete($this->name);
+    Cache::invalidateTags($this->getCacheTags());
+    $this->isNew = TRUE;
+    $this->resetOverriddenData();
+    $this->eventDispatcher->dispatch(ConfigEvents::DELETE, new ConfigCrudEvent($this));
+    $this->originalData = $this->data;
+    return $this;
+  }
+
+  /**
+   * Gets the raw data without overrides.
+   *
+   * @return array
+   *   The raw data.
+   */
+  public function getRawData() {
+    return $this->data;
+  }
+
+  /**
+   * Gets original data from this configuration object.
+   *
+   * Original data is the data as it is immediately after loading from
+   * configuration storage before any changes. If this is a new configuration
+   * object it will be an empty array.
+   *
+   * @see \Drupal\Core\Config\Config::get()
+   *
+   * @param string $key
+   *   A string that maps to a key within the configuration data.
+   * @param bool $apply_overrides
+   *   Apply any overrides to the original data. Defaults to TRUE.
+   *
+   * @return mixed
+   *   The data that was requested.
+   */
+  public function getOriginal($key = '', $apply_overrides = TRUE) {
+    $original_data = $this->originalData;
+    if ($apply_overrides) {
+      // Apply overrides.
+      if (isset($this->moduleOverrides) && is_array($this->moduleOverrides)) {
+        $original_data = NestedArray::mergeDeepArray([$original_data, $this->moduleOverrides], TRUE);
+      }
+      if (isset($this->settingsOverrides) && is_array($this->settingsOverrides)) {
+        $original_data = NestedArray::mergeDeepArray([$original_data, $this->settingsOverrides], TRUE);
+      }
+    }
+
+    if (empty($key)) {
+      return $original_data;
+    }
+    else {
+      $parts = explode('.', $key);
+      if (count($parts) == 1) {
+        return isset($original_data[$key]) ? $original_data[$key] : NULL;
+      }
+      else {
+        $value = NestedArray::getValue($original_data, $parts, $key_exists);
+        return $key_exists ? $value : NULL;
+      }
+    }
+  }
+
+}