--- /dev/null
+<?php
+
+namespace Drupal\language\Plugin\migrate\source\d6;
+
+use Drupal\migrate\Row;
+use Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase;
+
+/**
+ * Drupal 6 i18n vocabularies source from database.
+ *
+ * @MigrateSource(
+ * id = "d6_language_content_settings_taxonomy_vocabulary",
+ * source_module = "taxonomy"
+ * )
+ */
+class LanguageContentSettingsTaxonomyVocabulary extends DrupalSqlBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function query() {
+ return $this->select('vocabulary', 'v')
+ ->fields('v', ['vid', 'language']);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function fields() {
+ return [
+ 'vid' => $this->t('The vocabulary ID.'),
+ 'language' => $this->t('The default language for new terms.'),
+ 'state' => $this->t('The i18n taxonomy translation setting.'),
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function prepareRow(Row $row) {
+ // Get the i18n taxonomy translation setting for this vocabulary.
+ // 0 - No multilingual options
+ // 1 - Localizable terms. Run through the localization system.
+ // 2 - Predefined language for a vocabulary and its terms.
+ // 3 - Per-language terms, translatable (referencing terms with different
+ // languages) but not localizable.
+ $i18ntaxonomy_vocabulary = $this->variableGet('i18ntaxonomy_vocabulary', NULL);
+ $vid = $row->getSourceProperty('vid');
+ $state = FALSE;
+ if (array_key_exists($vid, $i18ntaxonomy_vocabulary)) {
+ $state = $i18ntaxonomy_vocabulary[$vid];
+ }
+ $row->setSourceProperty('state', $state);
+ return parent::prepareRow($row);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getIds() {
+ $ids['vid']['type'] = 'integer';
+ return $ids;
+ }
+
+}