flat_citation.module

<?php
/**
 * @file
 * Flat Citation
 */

/**
 * Implements hook_block_info().
 */
function flat_citation_block_info()
{
    return array(
      'flat_citation' => array(
        'visibility' => BLOCK_VISIBILITY_LISTED,
        'pages' => 'islandora/object/*',
        'cache' => DRUPAL_CACHE_PER_PAGE,
        'info' => t('FLAT citation from CMDI metadata'),
      ),
    );
}
  
function flat_citation_get_citation(AbstractObject $object)
{

    module_load_include('inc', 'flat_citation', 'includes/CitationGenerator');

    $generator       = new CitationGenerator();
    $citation = $generator->generate($object->id);

    return $citation;
}

/**
 * Implements hook_block_view().
 */
function flat_citation_block_view()
{

    $to_render = array();

    $object = menu_get_object('islandora_object', 2);

    if ($object) {
        $citation = flat_citation_get_citation($object);

        $result = "<p>" . $citation . "</p>";


        if (isset($result)) {
            $to_render['content'] = $result;
        }
    }
    return $to_render;
}