Add alterable breadcrumbs to Islandora.

includes/breadcrumb.inc

@@ -27,6 +27,7 @@
 function islandora_get_breadcrumbs($object) {
   $breadcrumbs = islandora_get_breadcrumbs_recursive($object->id, $object->repository);
   array_pop($breadcrumbs);
+  drupal_alter('islandora_breadcrumbs', $breadcrumbs);
   return $breadcrumbs;
 }
 

islandora.api.php

@@ -648,3 +648,10 @@ function hook_islandora_derivative() {
 function hook_CMODEL_PID_islandora_derivative() {
 
 }
+
+/**
+ * Alters breadcrumbs used on Solr search results and collection views.
+ */
+function hook_islandora_breadcrumbs_alter(&$breadcrumbs) {
+
+}