From 1b30be26e61197d3806c238eb2fc01907f35bb27 Mon Sep 17 00:00:00 2001
From: wim <devnull@localhost>
Date: Mon, 12 Jul 2010 16:34:22 +0000
Subject: [PATCH] better error message when no links are found in urdf file

---
 urdf/src/model.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/urdf/src/model.cpp b/urdf/src/model.cpp
index 6a670a6..dfade4c 100644
--- a/urdf/src/model.cpp
+++ b/urdf/src/model.cpp
@@ -212,6 +212,11 @@ bool Model::initXml(TiXmlElement *robot_xml)
       return false;
     }
   }
+  if (this->links_.empty()){
+    ROS_ERROR("No link elements found in urdf file");
+    return false;
+  }
+
   // Get all Joint elements
   for (TiXmlElement* joint_xml = robot_xml->FirstChildElement("joint"); joint_xml; joint_xml = joint_xml->NextSiblingElement("joint"))
   {