function rdf_preprocess_comment

Implements MODULE_preprocess_HOOK().

File

modules/rdf/rdf.module, line 665

Code

function rdf_preprocess_comment(&$variables) {
    $comment = $variables['comment'];
    if (!empty($comment->rdf_mapping['rdftype'])) {
        // Adds RDFa markup to the comment container. The about attribute specifies
        // the URI of the resource described within the HTML element, while the
        // typeof attribute indicates its RDF type (e.g., sioc:Post, foaf:Document,
        // and so on.)
        $uri = entity_uri('comment', $comment);
        $variables['attributes_array']['about'] = url($uri['path'], $uri['options']);
        $variables['attributes_array']['typeof'] = $comment->rdf_mapping['rdftype'];
    }
    // Adds RDFa markup for the date of the comment.
    if (!empty($comment->rdf_mapping['created'])) {
        // The comment date is precomputed as part of the rdf_data so that it can be
        // cached as part of the entity.
        $date_attributes_array = $comment->rdf_data['date'];
        $variables['rdf_template_variable_attributes_array']['created'] = $date_attributes_array;
        $variables['rdf_template_variable_attributes_array']['submitted'] = $date_attributes_array;
    }
    // Adds RDFa markup for the relation between the comment and its author.
    if (!empty($comment->rdf_mapping['uid'])) {
        $variables['rdf_template_variable_attributes_array']['author']['rel'] = $comment->rdf_mapping['uid']['predicates'];
        $variables['rdf_template_variable_attributes_array']['submitted']['rel'] = $comment->rdf_mapping['uid']['predicates'];
    }
    if (!empty($comment->rdf_mapping['title'])) {
        // Adds RDFa markup to the subject of the comment. Because the RDFa markup
        // is added to an <h3> tag which might contain HTML code, we specify an
        // empty datatype to ensure the value of the title read by the RDFa parsers
        // is a literal.
        $variables['title_attributes_array']['property'] = $comment->rdf_mapping['title']['predicates'];
        $variables['title_attributes_array']['datatype'] = '';
    }
    // Annotates the parent relationship between the current comment and the node
    // it belongs to. If available, the parent comment is also annotated.
    if (!empty($comment->rdf_mapping['pid'])) {
        // Adds the relation to the parent node.
        $parent_node_attributes['rel'] = $comment->rdf_mapping['pid']['predicates'];
        // The parent node URI is precomputed as part of the rdf_data so that it can
        // be cached as part of the entity.
        $parent_node_attributes['resource'] = $comment->rdf_data['nid_uri'];
        $variables['rdf_metadata_attributes_array'][] = $parent_node_attributes;
        // Adds the relation to parent comment, if it exists.
        if ($comment->pid != 0) {
            $parent_comment_attributes['rel'] = $comment->rdf_mapping['pid']['predicates'];
            // The parent comment URI is precomputed as part of the rdf_data so that
            // it can be cached as part of the entity.
            $parent_comment_attributes['resource'] = $comment->rdf_data['pid_uri'];
            $variables['rdf_metadata_attributes_array'][] = $parent_comment_attributes;
        }
    }
}