add tinyxml.h, fix char *NULL return value case

dtool/src/interrogate/interfaceMakerPythonNative.cxx

@@ -2782,6 +2782,11 @@ void InterfaceMakerPythonNative::pack_return_value(ostream &out, int indent_leve
 
   if (remap->_return_type->new_type_is_atomic_string()) {
     if (TypeManager::is_char_pointer(orig_type)) {
+      indent(out, indent_level)<<"if("<< return_expr<< " == NULL)\n";
+      indent(out, indent_level)<<"{\n";
+      indent(out, indent_level)<<"    Py_INCREF(Py_None);\n";
+      indent(out, indent_level)<<"    return Py_None;\n";
+      indent(out, indent_level)<<"}\n";
       indent(out, indent_level)
         << "return PyString_FromString(" << return_expr << ");\n";
 
@@ -2838,6 +2843,11 @@ void InterfaceMakerPythonNative::pack_return_value(ostream &out, int indent_leve
           << "return PyFloat_FromDouble(" << return_expr << ");\n";
 
   } else if (TypeManager::is_char_pointer(type)) {
+      indent(out, indent_level)<<"if("<< return_expr<< " == NULL)\n";
+      indent(out, indent_level)<<"{\n";
+      indent(out, indent_level)<<"    Py_INCREF(Py_None);\n";
+      indent(out, indent_level)<<"    return Py_None;\n";
+      indent(out, indent_level)<<"}\n";
       indent(out, indent_level)
       << "return PyString_FromString(" << return_expr << ");\n";
 

dtool/src/parser-inc/Sources.pp

@@ -12,7 +12,7 @@
     cv.h cvtypes.h cxcore.h cxerror.h cxtypes.h highgui.h \
     avcodec.h avformat.h avio.h avutil.h swscale.h integer.h \
     intfloat_readwrite.h mathematics.h rational.h rtp.h \
-    rtsp.h rtspcodes.h setjmp.h winsock2.h \
+    rtsp.h rtspcodes.h setjmp.h tinyxml.h winsock2.h \
     ode/ode.h collision_trimesh.h artools.h \
     NxPhysics.h cloth/NxCloth.h fluids/NxFluid.h \
     netinet/tcp.h netinet/ip.h sys/socket.h \

dtool/src/parser-inc/tinyxml.h

@@ -0,0 +1,71 @@
+#ifndef TINYXML_H
+#define TINYXML_H
+
+// A simple header to mirror the subset of the tinyxml interface we
+// wish to expose to interrogate.  This is intended to protect us from
+// having to run interrogate directly on the tinyxml.h header file.
+
+class TiXmlBase;
+class TiXmlNode;
+class TiXmlElement;
+class TiXmlDocument;
+
+class TiXmlBase {
+};
+
+
+class TiXmlNode : public TiXmlBase {
+public:
+  const char *Value() const;
+  void SetValue(const char *_value);
+
+  TiXmlNode *InsertEndChild(const TiXmlNode &addThis);
+  bool RemoveChild( TiXmlNode* removeThis );
+  
+  const TiXmlElement *NextSiblingElement() const;
+  TiXmlElement *NextSiblingElement();
+
+  const TiXmlElement* NextSiblingElement(const char *) const;
+  TiXmlElement* NextSiblingElement(const char *_next);
+
+  const TiXmlElement* FirstChildElement() const;
+  TiXmlElement* FirstChildElement();
+
+  const TiXmlElement* FirstChildElement( const char * _value ) const;
+  TiXmlElement* FirstChildElement( const char * _value );
+
+  virtual TiXmlNode* Clone() const;
+};
+
+
+class TiXmlElement : public TiXmlNode {
+public:
+  TiXmlElement(const char * in_value);
+  TiXmlElement( const TiXmlElement& );
+
+  const char* Attribute( const char* name ) const;
+  void SetAttribute( const char* name, const char * _value );
+  void RemoveAttribute( const char * name );
+};
+
+class TiXmlDeclaration : public TiXmlNode {
+public:
+  TiXmlDeclaration(const char* _version,
+                   const char* _encoding,
+                   const char* _standalone);
+};
+
+
+class TiXmlDocument : public TiXmlNode {
+public:
+  TiXmlDocument();
+  TiXmlDocument(const char * documentName);
+
+  bool LoadFile();
+  bool SaveFile() const;
+  bool LoadFile(const char * filename);
+  bool SaveFile(const char * filename) const;
+};
+
+
+#endif