Added a wrapString(const char*) which automatically handles null strings.

include/osgDB/Output

@@ -49,6 +49,9 @@ class OSGDB_EXPORT Output : public std::ofstream
 
         Output& indent();
 
+        /** wrap a string with "" quotes and use \" for any internal quotes.*/
+        std::string wrapString(const char* str);
+
         /** wrap a string with "" quotes and use \" for any internal quotes.*/
         std::string wrapString(const std::string& str);
 

src/osgDB/Output.cpp

@@ -105,6 +105,12 @@ void Output::moveOut()
     if (_indent<0) _indent=0;
 }
 
+std::string Output::wrapString(const char* str)
+{
+    if (!str) return std::string("\"\"");
+    return wrapString(std::string(str));
+}
+
 std::string Output::wrapString(const std::string& str)
 {
     std::string newstring;