Index: libraries.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/libraries/libraries.module,v
retrieving revision 1.6
diff -u -p -r1.6 libraries.module
--- libraries.module	23 Jul 2010 12:57:01 -0000	1.6
+++ libraries.module	7 Oct 2010 01:32:32 -0000
@@ -208,24 +208,27 @@ function libraries_detect_library(&$libr
   if (!isset($library['library path'])) {
     $library['library path'] = libraries_get_path($name);
   }
-  if (!file_exists($library['library path'])) {
+
+  if (!libraries_file_exists($library['library path'])) {
     $library['error'] = t('%library could not be found.', array('%library' => $library['title']));
     return;
   }
  
   // Determine to which supported version the installed version maps.
@@ -332,8 +339,8 @@ function libraries_load_files($library, 
         // If the value is not an array, it's a filename and passed as first
         // (and only) argument.
         if (!is_array($options)) {
-          // Prepend the library path to the file name.
-          $data = "$path/$options";
+          // Prepend the library path to the file name, if it is not an external file.
+          $data = (url_is_external($options) ? $options : "$path/$options");
           $options = NULL;
         }
         // In some cases, the first parameter ($data) is an array. Arrays can't be
@@ -354,9 +361,9 @@ function libraries_load_files($library, 
   // Load PHP files.
   if (!empty($library['files']['php'])) {
     foreach ($library['files']['php'] as $file) {
-      $file_path = DRUPAL_ROOT . '/' . $path . '/' . $file;
-      if (file_exists($file_path)) {
-        require_once $file_path;
+      $file = (url_is_external($file) ? $file : DRUPAL_ROOT . '/' . $path . '/' . $file);
+      if (libraries_file_exists($file)) {
+        include_once $file;
       }
     }
   }
@@ -393,8 +400,8 @@ function libraries_get_version($library,
     'cols' => 200,
   );
 
-  $file = DRUPAL_ROOT . '/' . $library['library path'] . '/' . $options['file'];
-  if (empty($options['file']) || !file_exists($file)) {
+  $file = (url_is_external($options['file']) ? $options['file'] : DRUPAL_ROOT . '/' . $library['library path'] . '/' . $options['file']);
+  if (empty($options['file']) || !libraries_file_exists($file)) {
     return;
   }
   $file = fopen($file, 'r');
@@ -408,3 +415,12 @@ function libraries_get_version($library,
   fclose($file);
 }
 
+/**
+ * Wrapper function for file_exists() with support for external files.
+ *
+ * @param $file
+ *   The path to the file. In case of an external file the full URL.
+ */
+function libraries_file_exists($file) {
+  return (file_exists($file) || (url_is_external($file) && fopen($file, 'r')));
+}