1 files changed, 19 insertions, 0 deletions
diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index 46bcabd..0ef39fd 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -1932,6 +1932,25 @@ std::string cmSystemTools::GetFilenameExtension(const std::string& filename)
     }
 }
 
+/**
+ * Return file extension of a full filename (dot included).
+ * Warning: this is the shortest extension (for example: .tar.gz)
+ */
+std::string 
+cmSystemTools::GetFilenameLastExtension(const std::string& filename)
+{
+  std::string name = cmSystemTools::GetFilenameName(filename);
+  std::string::size_type dot_pos = name.rfind(".");
+  if(dot_pos != std::string::npos)
+    {
+    return name.substr(dot_pos);
+    }
+  else
+    {
+    return "";
+    }
+}
+
 
 /**
  * Return file name without extension of a full filename (i.e. without path).