Initial commit.

README.md

+# Islandora OAI Cleanup
+
+## Introduction
+
+## Requirements
+
+* [Islandora OAI](https://github.com/Islandora/islandora_oai)
+
+## Installation
+
+Install as usual, see [this](https://drupal.org/documentation/install/modules-themes/modules-7) for further information.
+
+## Configuration
+
+There are no configuration options.
+
+## Maintainer
+
+* [Mark Jordan](https://github.com/mjordan)
+
+## License
+
+* [GPLv3](http://www.gnu.org/licenses/gpl-3.0.txt)

islandora_oai_cleanup.info

+name = "Islandora OAI-PMH Cleanup"
+description = "Utility module that removes elements from MODS before it is exposed via OAI-PMH."
+version = 7.x-dev
+core = 7.x
+package = Islandora Tools
+dependencies[] = islandora_oai

islandora_oai_cleanup.module

+<?php
+
+/**
+ * @file
+ * The main Islandora Metadata Extras module file.
+ */
+
+/**
+ * Implements hook_islandora_oai_record_alter().
+ */
+function islandora_oai_cleanup_islandora_oai_record_alter(&$oai_record, &$params) {
+  if ($params['metadata_prefix'] == 'mods') {
+    $dom = new DOMDocument();
+    $dom->preserveWhiteSpace = FALSE;
+    $dom->formatOutput = TRUE;
+    $dom->loadXML($oai_record);
+    $mods = $dom->getElementsByTagNameNS('http://www.loc.gov/mods/v3', 'mods');
+    $extensions = $dom->getElementsByTagNameNS('http://www.loc.gov/mods/v3', 'extension');
+    foreach ($extensions as $extension) {
+      $mods->item(0)->removeChild($extension);
+    }
+    $oai_record = $dom->saveXML($dom->documentElement);
+  }
+}