--- /dev/null
+<?php
+
+/**
+ * @file
+ * Builds placeholder replacement tokens for comment-related data.
+ */
+
+use Drupal\Component\Utility\UrlHelper;
+use Drupal\Core\Datetime\Entity\DateFormat;
+use Drupal\Core\Entity\ContentEntityInterface;
+use Drupal\Core\Entity\FieldableEntityInterface;
+use Drupal\Core\Render\BubbleableMetadata;
+
+/**
+ * Implements hook_token_info().
+ */
+function comment_token_info() {
+ $type = [
+ 'name' => t('Comments'),
+ 'description' => t('Tokens for comments posted on the site.'),
+ 'needs-data' => 'comment',
+ ];
+
+ $tokens = [];
+ // Provide a integration for each entity type except comment.
+ foreach (\Drupal::entityTypeManager()->getDefinitions() as $entity_type_id => $entity_type) {
+ if ($entity_type_id == 'comment' || !$entity_type->entityClassImplements(ContentEntityInterface::class)) {
+ continue;
+ }
+
+ if (\Drupal::service('comment.manager')->getFields($entity_type_id)) {
+ // Get the correct token type.
+ $token_type = ($entity_type_id == 'taxonomy_term') ? 'term' : $entity_type_id;
+
+ // @todo Make this work per field. See https://www.drupal.org/node/2031903.
+ $tokens[$token_type]['comment-count'] = [
+ 'name' => t("Comment count"),
+ 'description' => t("The number of comments posted on an entity."),
+ ];
+ $tokens[$token_type]['comment-count-new'] = [
+ 'name' => t("New comment count"),
+ 'description' => t("The number of comments posted on an entity since the reader last viewed it."),
+ ];
+ }
+ }
+
+ // Core comment tokens
+ $comment['cid'] = [
+ 'name' => t("Comment ID"),
+ 'description' => t("The unique ID of the comment."),
+ ];
+ $comment['hostname'] = [
+ 'name' => t("IP Address"),
+ 'description' => t("The IP address of the computer the comment was posted from."),
+ ];
+ $comment['mail'] = [
+ 'name' => t("Email address"),
+ 'description' => t("The email address left by the comment author."),
+ ];
+ $comment['homepage'] = [
+ 'name' => t("Home page"),
+ 'description' => t("The home page URL left by the comment author."),
+ ];
+ $comment['title'] = [
+ 'name' => t("Title"),
+ 'description' => t("The title of the comment."),
+ ];
+ $comment['body'] = [
+ 'name' => t("Content"),
+ 'description' => t("The formatted content of the comment itself."),
+ ];
+ $comment['langcode'] = [
+ 'name' => t('Language code'),
+ 'description' => t('The language code of the language the comment is written in.'),
+ ];
+ $comment['url'] = [
+ 'name' => t("URL"),
+ 'description' => t("The URL of the comment."),
+ ];
+ $comment['edit-url'] = [
+ 'name' => t("Edit URL"),
+ 'description' => t("The URL of the comment's edit page."),
+ ];
+
+ // Chained tokens for comments
+ $comment['created'] = [
+ 'name' => t("Date created"),
+ 'description' => t("The date the comment was posted."),
+ 'type' => 'date',
+ ];
+ $comment['changed'] = [
+ 'name' => t("Date changed"),
+ 'description' => t("The date the comment was most recently updated."),
+ 'type' => 'date',
+ ];
+ $comment['parent'] = [
+ 'name' => t("Parent"),
+ 'description' => t("The comment's parent, if comment threading is active."),
+ 'type' => 'comment',
+ ];
+ $comment['entity'] = [
+ 'name' => t("Entity"),
+ 'description' => t("The entity the comment was posted to."),
+ 'type' => 'entity',
+ ];
+ $comment['author'] = [
+ 'name' => t("Author"),
+ 'description' => t("The author name of the comment."),
+ 'type' => 'user',
+ ];
+
+ return [
+ 'types' => ['comment' => $type],
+ 'tokens' => [
+ 'comment' => $comment,
+ ] + $tokens,
+ ];
+}
+
+/**
+ * Implements hook_tokens().
+ */
+function comment_tokens($type, $tokens, array $data, array $options, BubbleableMetadata $bubbleable_metadata) {
+ $token_service = \Drupal::token();
+
+ $url_options = ['absolute' => TRUE];
+ if (isset($options['langcode'])) {
+ $url_options['language'] = \Drupal::languageManager()->getLanguage($options['langcode']);
+ $langcode = $options['langcode'];
+ }
+ else {
+ $langcode = NULL;
+ }
+ $replacements = [];
+
+ if ($type == 'comment' && !empty($data['comment'])) {
+ /** @var \Drupal\comment\CommentInterface $comment */
+ $comment = $data['comment'];
+
+ foreach ($tokens as $name => $original) {
+ switch ($name) {
+ // Simple key values on the comment.
+ case 'cid':
+ $replacements[$original] = $comment->id();
+ break;
+
+ // Poster identity information for comments.
+ case 'hostname':
+ $replacements[$original] = $comment->getHostname();
+ break;
+
+ case 'mail':
+ $mail = $comment->getAuthorEmail();
+ // Add the user cacheability metadata in case the author of the comment
+ // is not the anonymous user.
+ if ($comment->getOwnerId()) {
+ $bubbleable_metadata->addCacheableDependency($comment->getOwner());
+ }
+ $replacements[$original] = $mail;
+ break;
+
+ case 'homepage':
+ $replacements[$original] = UrlHelper::stripDangerousProtocols($comment->getHomepage());
+ break;
+
+ case 'title':
+ $replacements[$original] = $comment->getSubject();
+ break;
+
+ case 'body':
+ // "processed" returns a \Drupal\Component\Render\MarkupInterface via
+ // check_markup().
+ $replacements[$original] = $comment->comment_body->processed;
+ break;
+
+ case 'langcode':
+ $replacements[$original] = $comment->language()->getId();
+ break;
+
+ // Comment related URLs.
+ case 'url':
+ $url_options['fragment'] = 'comment-' . $comment->id();
+ $replacements[$original] = $comment->url('canonical', $url_options);
+ break;
+
+ case 'edit-url':
+ $url_options['fragment'] = NULL;
+ $replacements[$original] = $comment->url('edit-form', $url_options);
+ break;
+
+ case 'author':
+ $name = $comment->getAuthorName();
+ // Add the user cacheability metadata in case the author of the comment
+ // is not the anonymous user.
+ if ($comment->getOwnerId()) {
+ $bubbleable_metadata->addCacheableDependency($comment->getOwner());
+ }
+ $replacements[$original] = $name;
+ break;
+
+ case 'parent':
+ if ($comment->hasParentComment()) {
+ $parent = $comment->getParentComment();
+ $bubbleable_metadata->addCacheableDependency($parent);
+ $replacements[$original] = $parent->getSubject();
+ }
+ break;
+
+ case 'created':
+ $date_format = DateFormat::load('medium');
+ $bubbleable_metadata->addCacheableDependency($date_format);
+ $replacements[$original] = format_date($comment->getCreatedTime(), 'medium', '', NULL, $langcode);
+ break;
+
+ case 'changed':
+ $date_format = DateFormat::load('medium');
+ $bubbleable_metadata->addCacheableDependency($date_format);
+ $replacements[$original] = format_date($comment->getChangedTime(), 'medium', '', NULL, $langcode);
+ break;
+
+ case 'entity':
+ $entity = $comment->getCommentedEntity();
+ $bubbleable_metadata->addCacheableDependency($entity);
+ $title = $entity->label();
+ $replacements[$original] = $title;
+ break;
+ }
+ }
+
+ // Chained token relationships.
+ if ($entity_tokens = $token_service->findwithPrefix($tokens, 'entity')) {
+ $entity = $comment->getCommentedEntity();
+ $replacements += $token_service->generate($comment->getCommentedEntityTypeId(), $entity_tokens, [$comment->getCommentedEntityTypeId() => $entity], $options, $bubbleable_metadata);
+ }
+
+ if ($date_tokens = $token_service->findwithPrefix($tokens, 'created')) {
+ $replacements += $token_service->generate('date', $date_tokens, ['date' => $comment->getCreatedTime()], $options, $bubbleable_metadata);
+ }
+
+ if ($date_tokens = $token_service->findwithPrefix($tokens, 'changed')) {
+ $replacements += $token_service->generate('date', $date_tokens, ['date' => $comment->getChangedTime()], $options, $bubbleable_metadata);
+ }
+
+ if (($parent_tokens = $token_service->findwithPrefix($tokens, 'parent')) && $parent = $comment->getParentComment()) {
+ $replacements += $token_service->generate('comment', $parent_tokens, ['comment' => $parent], $options, $bubbleable_metadata);
+ }
+
+ if (($author_tokens = $token_service->findwithPrefix($tokens, 'author')) && $account = $comment->getOwner()) {
+ $replacements += $token_service->generate('user', $author_tokens, ['user' => $account], $options, $bubbleable_metadata);
+ }
+ }
+ // Replacement tokens for any content entities that have comment field.
+ elseif (!empty($data[$type]) && $data[$type] instanceof FieldableEntityInterface) {
+ /** @var $entity \Drupal\Core\Entity\FieldableEntityInterface */
+ $entity = $data[$type];
+
+ foreach ($tokens as $name => $original) {
+ switch ($name) {
+ case 'comment-count':
+ $count = 0;
+ $fields = array_keys(\Drupal::service('comment.manager')->getFields($entity->getEntityTypeId()));
+ $definitions = array_keys($entity->getFieldDefinitions());
+ $valid_fields = array_intersect($fields, $definitions);
+ foreach ($valid_fields as $field_name) {
+ $count += $entity->get($field_name)->comment_count;
+ }
+ $replacements[$original] = $count;
+ break;
+
+ case 'comment-count-new':
+ $replacements[$original] = \Drupal::service('comment.manager')->getCountNewComments($entity);
+ break;
+ }
+ }
+ }
+
+ return $replacements;
+}