? mappers/location.inc
Index: feeds.api.php
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/feeds/feeds.api.php,v
retrieving revision 1.10
diff -u -p -r1.10 feeds.api.php
--- feeds.api.php	24 Feb 2010 01:19:33 -0000	1.10
+++ feeds.api.php	17 May 2010 17:03:07 -0000
@@ -108,6 +108,19 @@ function hook_feeds_after_import(FeedsIm
  */
 
 /**
+ * Alter mapping targets for users. Use this hook to add additional target
+ *  options to the mapping form of User processors.
+ *
+ * For an example implementation, see mappers/location.inc
+ *
+ * @param: &$targets
+ *  Array containing the targets to be offered to the user. Add to this array
+ *  to expose additional options. Remove from this array to suppress options.
+ */
+function hook_feeds_user_processor_targets_alter(&$targets) {
+}
+
+/**
  * Alter mapping targets for nodes. Use this hook to add additional target
  * options to the mapping form of Node processors.
  *
Index: plugins/FeedsUserProcessor.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/feeds/plugins/FeedsUserProcessor.inc,v
retrieving revision 1.10
diff -u -p -r1.10 FeedsUserProcessor.inc
--- plugins/FeedsUserProcessor.inc	28 Apr 2010 22:18:30 -0000	1.10
+++ plugins/FeedsUserProcessor.inc	17 May 2010 17:03:07 -0000
@@ -94,6 +94,26 @@ class FeedsUserProcessor extends FeedsPr
   }
 
   /**
+   * Loads on-behalf implementations from mappers/
+   */
+  protected static function loadMappers() {
+    static $loaded = FALSE;
+
+    if (!$loaded) {
+      $path = drupal_get_path('module', 'feeds') .'/mappers';
+      $files = drupal_system_listing('.*\.inc$', $path, 'name', 0);
+      foreach ($files as $file) {
+        if (strstr($file->filename, '/mappers/')) {
+              require_once("./$file->filename");
+        }
+      }
+      // Rebuild cache.
+      module_implements('', FALSE, TRUE);
+    }
+    $loaded = TRUE;
+  }
+
+  /**
    * Execute mapping on an item.
    */
   protected function map($source_item) {
@@ -188,6 +208,11 @@ class FeedsUserProcessor extends FeedsPr
         'optional_unique' => TRUE,
        );
     }
+
+    // Let other modules expose mapping targets.
+    self::loadMappers();
+    drupal_alter('feeds_user_processor_targets', $targets);
+
     return $targets;
   }