Issue #1032640: Added basic token integration.

feeds.tokens.inc

+<?php
+
+/**
+ * @file
+ * Builds placeholder replacement tokens for feed-related data.
+ */
+
+/**
+ * Implements hook_token_info().
+ */
+function feeds_token_info() {
+  // @todo This token could be for any entity type.
+  $info['tokens']['node']['feed-source'] = array(
+    'name' => t('Feed source'),
+    'description' => t('The node the feed item was sourced from.'),
+    'type' => 'node',
+  );
+
+  return $info;
+}
+
+/**
+ * Implements hook_tokens().
+ */
+function feeds_tokens($type, $tokens, array $data, array $options) {
+  $replacements = array();
+
+  $sanitize = !empty($options['sanitize']);
+
+  if ($type == 'node' && !empty($data['node'])) {
+    $node = $data['node'];
+
+    foreach ($tokens as $name => $original) {
+      switch ($name) {
+        case 'feed-source':
+          if (!empty($node->feed_nid) && $feed_source = node_load($node->feed_nid)) {
+            $replacements[$original] = $sanitize ? check_plain($feed_source->title) : $feed_source->title;
+          }
+          break;
+      }
+    }
+
+    // Chained node token relationships.
+    if ($feed_source_tokens = token_find_with_prefix($tokens, 'feed-source')) {
+      if (!empty($node->feed_nid) && $feed_source = node_load($node->feed_nid)) {
+        $replacements += token_generate('node', $feed_source_tokens, array('node' => $feed_source), $options);
+      }
+    }
+  }
+
+  return $replacements;
+}