Use hook mechanism and improve version acquisition

fedora_repository.module

@@ -2178,7 +2178,7 @@ function fedora_repository_batch_reingest_object($object, &$context) {
       $new_item = Fedora_Item::ingest_from_FOXML_file($foxml_file);
       if ($new_item->exists()) {
 // Batch operation was successful; can still add additional DSs, though
-        $context['message'][] = "{$new_item->pid} installed.";
+        $context['message'][] = t('%pid installed.', array('%pid' => $new_item->pid));
       }
     }
     
@@ -2238,22 +2238,17 @@ function fedora_repository_batch_reingest_object($object, &$context) {
  */
 function fedora_repository_get_islandora_datastream_version($item = NULL, $dsid = NULL, $datastream_file = NULL) {
   $return = NULL;
-  if (isset($item)) {
+  if (!empty($item) && !empty($dsid)) {
     $doc = simplexml_load_string($item->get_datastream_dissemination($dsid));
   }
-  elseif (isset($datastream_file)) {
+  elseif (!empty($datastream_file)) {
     $doc = simplexml_load_file($datastream_file);
   }
   
-  if (!empty($doc)) {
-    $attrs = $doc->attributes();
-    foreach ($attrs as $name => $value) {
-      if ($name == 'version') {
-        $return = (int) $value;
-        break;
-      }
-    }
+  if (!empty($doc) && $version = (int)$doc->attributes()->version) {
+    $return = $version;
   }
+  
   return $return;
 }
 

fedora_repository.solutionpacks.inc

@@ -114,6 +114,7 @@ function fedora_repository_solution_pack_form(&$form_state, $solution_pack_modul
                 // Check if the datastream is versioned and needs updating.
                 $installed_version = fedora_repository_get_islandora_datastream_version($item, $ds['dsid']);
                 $available_version = fedora_repository_get_islandora_datastream_version(NULL, NULL, $ds['datastream_file']);
+
                 if ($available_version > $installed_version) {
                   $needs_update = TRUE;
                   $object_status = 'Out of date';
@@ -165,8 +166,8 @@ function fedora_repository_solution_pack_form_submit($form, &$form_state) {
   $module_name = $form_state['values']['solution_pack_module'];
 
   // This should be replaced with module_invoke
-  $solution_pack_info = call_user_func($module_name . '_required_fedora_objects');
-  //$solution_pack_info = module_invoke($module_name, 'required_fedora_objects');
+  //$solution_pack_info = call_user_func($module_name . '_required_fedora_objects');
+  $solution_pack_info = module_invoke($module_name, 'required_fedora_objects');
   
   $batch = array(
     'title' => t('Installing / updating solution pack objects'),