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<?php

/**
 * @file
 * Builds placeholder replacement tokens for node-related data.
 */



/**
 * Implements hook_token_info().
 */
function node_token_info() {
  $type = array(
    'name' => t('Nodes'),
    'description' => t('Tokens related to individual content items, or "nodes".'),
    'needs-data' => 'node',
  );

  // Core tokens for nodes.
  $node['nid'] = array(
    'name' => t("Content ID"),
    'description' => t('The unique ID of the content item, or "node".'),
  );
  $node['vid'] = array(
    'name' => t("Revision ID"),
    'description' => t("The unique ID of the node's latest revision."),
  );
  $node['tnid'] = array(
    'name' => t("Translation set ID"),
    'description' => t("The unique ID of the original-language version of this node, if one exists."),
  );
  $node['type'] = array(
    'name' => t("Content type"),
    'description' => t("The type of the node."),
  );
  $node['type-name'] = array(
    'name' => t("Content type name"),
    'description' => t("The human-readable name of the node type."),
  );
  $node['title'] = array(
    'name' => t("Title"),
    'description' => t("The title of the node."),
  );
  $node['body'] = array(
    'name' => t("Body"),
    'description' => t("The main body text of the node."),
  );
  $node['summary'] = array(
    'name' => t("Summary"),
    'description' => t("The summary of the node's main body text."),
  );
  $node['language'] = array(
    'name' => t("Language"),
    'description' => t("The language the node is written in."),
  );
  $node['url'] = array(
    'name' => t("URL"),
    'description' => t("The URL of the node."),
  );
  $node['edit-url'] = array(
    'name' => t("Edit URL"),
    'description' => t("The URL of the node's edit page."),
  );

  // Chained tokens for nodes.
  $node['created'] = array(
    'name' => t("Date created"),
    'description' => t("The date the node was posted."),
    'type' => 'date',
  );
  $node['changed'] = array(
    'name' => t("Date changed"),
    'description' => t("The date the node was most recently updated."),
    'type' => 'date',
  );
  $node['author'] = array(
    'name' => t("Author"),
    'description' => t("The author of the node."),
    'type' => 'user',
  );

  return array(
    'types' => array('node' => $type),
    'tokens' => array('node' => $node),
  );
}

/**
 * Implements hook_tokens().
 */
function node_tokens($type, $tokens, array $data = array(), array $options = array()) {
  $url_options = array('absolute' => TRUE);
  if (isset($options['language'])) {
    $url_options['language'] = $options['language'];
    $language_code = $options['language']->language;
  }
  else {
    $language_code = NULL;
  }
  $sanitize = !empty($options['sanitize']);

  $replacements = array();

  if ($type == 'node' && !empty($data['node'])) {
    $node = $data['node'];

    foreach ($tokens as $name => $original) {
      switch ($name) {
        // Simple key values on the node.
        case 'nid':
          $replacements[$original] = $node->nid;
          break;

        case 'vid':
          $replacements[$original] = $node->vid;
          break;

        case 'tnid':
          $replacements[$original] = $node->tnid;
          break;

        case 'type':
          $replacements[$original] = $sanitize ? check_plain($node->type) : $node->type;
          break;

        case 'type-name':
          $type_name = node_type_get_name($node);
          $replacements[$original] = $sanitize ? check_plain($type_name) : $type_name;
          break;

        case 'title':
          $replacements[$original] = $sanitize ? check_plain($node->title) : $node->title;
          break;

        case 'body':
        case 'summary':
          if ($items = field_get_items('node', $node, 'body', $language_code)) {
            $column = ($name == 'body') ? 'value' : 'summary';
            $instance = field_info_instance('node', 'body', $node->type);
            $field_langcode = field_language('node', $node, 'body', $language_code);
            $replacements[$original] = $sanitize ? _text_sanitize($instance, $field_langcode, $items[0], $column) : $items[0][$column];
          }
          break;

        case 'language':
          $langcode = entity_language('node', $node);
          $replacements[$original] = $sanitize ? check_plain($langcode) : $langcode;
          break;

        case 'url':
          $replacements[$original] = url('node/' . $node->nid, $url_options);
          break;

        case 'edit-url':
          $replacements[$original] = url('node/' . $node->nid . '/edit', $url_options);
          break;

        // Default values for the chained tokens handled below.
        case 'author':
          $account = user_load($node->uid);
          $name = format_username($account);
          $replacements[$original] = $sanitize ? check_plain($name) : $name;
          break;

        case 'created':
          $replacements[$original] = format_date($node->created, 'medium', '', NULL, $language_code);
          break;

        case 'changed':
          $replacements[$original] = format_date($node->changed, 'medium', '', NULL, $language_code);
          break;
      }
    }

    if ($author_tokens = token_find_with_prefix($tokens, 'author')) {
      $author = user_load($node->uid);
      $replacements += token_generate('user', $author_tokens, array('user' => $author), $options);
    }

    if ($created_tokens = token_find_with_prefix($tokens, 'created')) {
      $replacements += token_generate('date', $created_tokens, array('date' => $node->created), $options);
    }

    if ($changed_tokens = token_find_with_prefix($tokens, 'changed')) {
      $replacements += token_generate('date', $changed_tokens, array('date' => $node->changed), $options);
    }
  }

  return $replacements;
}