Just regex (#108)

* add note to readme, extend in form, use latest version in composer.json

* comma

* Update utilities.inc

README.md

@@ -22,7 +22,6 @@
 
 [Twig Documentation] (http://twig.sensiolabs.org/documentation)
 
-
 ### Why Use Multi-importer
 * UI driven integrated workflow for ingest and update
 * Metadata Cleanup: Export your MODS metadata as CSV via Solr, clean up, then update the MODS datastream of the objects by recreating the MODS datastream using Twig
@@ -33,7 +32,8 @@
 * To take advantage of the Twig Templating system for creating MODS from CSVs
 * To preview the MODS output easily
 * Supports integration with Google Spreadsheets, Zip/Local/Amazon storage and Complex storage needs via hooks.
+* Added Jasny Pcre Extension. Twig templates can now support regular expressions. Be mindful of needing doubly escaped backslashes in situations that require regex with backslashes.
 
 ### Updating existing Objects
 * To enable this functionality without any warnings you need to use https://github.com/mnylc/islandora_batch/tree/7.x-ISLANDORA-2046 instead of main Islandora Batch release. We are working on making those changes into the main release.
-* Objects (PIDs) present in other Batch Sets won't be able to be updated because Islandora Batch only allows a single PID to exist in its DB. We are working on fixing that inside 7.x-ISLANDORA-2046. For now, please delete old batch sets if you plan on updating existing Objects that were ingested using Islandora Batch.
+* Objects (PIDs) present in other Batch Sets won't be able to be updated because Islandora Batch only allows a single PID to exist in its DB. We are working on fixing that inside 7.x-ISLANDORA-2046. For now, please delete old batch sets if you plan on updating existing Objects that were ingested using Islandora Batch.

composer.json

@@ -8,7 +8,8 @@
         "react/http": "^0.4.1",
         "phpoffice/phpexcel": "^1.8",
         "google/apiclient": "^2.0",
-        "cache/filesystem-adapter": "^0.3.3"
+        "cache/filesystem-adapter": "^0.3.3",
+        "jasny/twig-extensions": "^1.3"
     },
     "authors": [
         {

includes/import.form.inc

@@ -572,6 +572,7 @@ function islandora_multi_importer_twig_form($form, &$form_state, $file_data) {
     'debug' => TRUE,
   ));
   $twig->addExtension(new Twig_Extension_Debug());
+  $twig->addExtension(new Jasny\Twig\PcreExtension());  
 
   $validated = TRUE;
   try {

includes/utilities.inc

@@ -355,7 +355,8 @@ function islandora_multi_importer_twig_process(array $twig_input = array()) {
   $twig = new \Twig_Environment($loader, array(
     'cache' => drupal_realpath('private://'),
   ));
-
+  $twig->addExtension(new Jasny\Twig\PcreExtension());
+
   //We won't validate here. We are here because our form did that
   $output = $twig->render($twig_input['name'], $twig_input['data']);
   //@todo catch anyway any twig error to avoid the worker to fail bad.