From 826282a47f3c035088e944dcbd7a0748fc7c9df2 Mon Sep 17 00:00:00 2001
From: Dane Springmeyer <dane@dbsgeo.com>
Date: Mon, 15 Nov 2010 03:16:23 +0000
Subject: [PATCH] check for the existance of a shape index before trying to
 open it

---
 plugins/input/shape/shape_io.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/plugins/input/shape/shape_io.cpp b/plugins/input/shape/shape_io.cpp
index d13b3ed1f..ede0d2466 100644
--- a/plugins/input/shape/shape_io.cpp
+++ b/plugins/input/shape/shape_io.cpp
@@ -24,7 +24,7 @@
 
 #include "shape_io.hpp"
 #include "shape.hpp"
-
+#include <boost/filesystem/operations.hpp>
 
 using mapnik::datasource_exception;
 using mapnik::geometry_type;
@@ -47,6 +47,11 @@ shape_io::shape_io(const std::string& shape_name)
     }
     try 
     {
+        if (!boost::filesystem::exists(shape_name + INDEX))
+        {
+            throw datasource_exception("Shape Plugin Warning: Could not open index: '" + shape_name + INDEX + "' does not exist");
+        }
+
         index_= boost::shared_ptr<shape_file>(new shape_file(shape_name + INDEX));
     }
     catch (...)