python string conversion

- use _PyUnicode_AsStringAndSize where possible
- use %R for PyErr_Format(...) rather then running repr on the object explicitly 
- use const char

source/gameengine/Converter/BL_ActionActuator.cpp

@@ -344,8 +344,9 @@ bool BL_ActionActuator::Update(double curtime, bool frame)
 /* Python functions                                                          */
 /* ------------------------------------------------------------------------- */
 
-PyObject* BL_ActionActuator::PyGetChannel(PyObject* value) {
-	char *string= _PyUnicode_AsString(value);
+PyObject* BL_ActionActuator::PyGetChannel(PyObject* value)
+{
+	const char *string= _PyUnicode_AsString(value);
 	
 	if (!string) {
 		PyErr_SetString(PyExc_TypeError, "expected a single string");

source/gameengine/Expressions/ListValue.cpp

@@ -339,10 +339,9 @@ PyObject* listvalue_mapping_subscript(PyObject* self, PyObject* pyindex)
 		int index = PyLong_AsSsize_t(pyindex);
 		return listvalue_buffer_item(self, index); /* wont add a ref */
 	}
-	
-	PyObject *pyindex_str = PyObject_Repr(pyindex); /* new ref */
-	PyErr_Format(PyExc_KeyError, "CList[key]: '%s' key not in list", _PyUnicode_AsString(pyindex_str));
-	Py_DECREF(pyindex_str);
+
+	PyErr_Format(PyExc_KeyError,
+	             "CList[key]: '%R' key not in list", pyindex);
 	return NULL;
 }
 

source/gameengine/Expressions/PyObjectPlus.cpp

@@ -1012,8 +1012,8 @@ int PyObjectPlus::py_set_attrdef(PyObject *self_py, PyObject *value, const PyAtt
 			{
 				if (PyUnicode_Check(value)) 
 				{
-					Py_ssize_t val_len;
-					char *val = _PyUnicode_AsStringAndSize(value, &val_len);
+					Py_ssize_t val_size;
+					const char *val = _PyUnicode_AsStringAndSize(value, &val_size);
 					strncpy(ptr, val, attrdef->m_size);
 					ptr[attrdef->m_size-1] = 0;
 				}
@@ -1030,7 +1030,7 @@ int PyObjectPlus::py_set_attrdef(PyObject *self_py, PyObject *value, const PyAtt
 				if (PyUnicode_Check(value)) 
 				{
 					Py_ssize_t val_len;
-					char *val = _PyUnicode_AsStringAndSize(value, &val_len);
+					const char *val = _PyUnicode_AsStringAndSize(value, &val_len); /* XXX, should be 'const' but we do a silly trick to have a shorter string */
 					if (attrdef->m_clamp)
 					{
 						if (val_len < attrdef->m_imin)
@@ -1042,10 +1042,8 @@ int PyObjectPlus::py_set_attrdef(PyObject *self_py, PyObject *value, const PyAtt
 						else if (val_len > attrdef->m_imax)
 						{
 							// trim the string
-							char c = val[attrdef->m_imax];
-							val[attrdef->m_imax] = 0;
 							*var = val;
-							val[attrdef->m_imax] = c;
+							var->SetLength(attrdef->m_imax);
 							break;
 						}
 					} else if (val_len < attrdef->m_imin || val_len > attrdef->m_imax)

source/gameengine/Expressions/StringValue.h

@@ -31,8 +31,7 @@ public:
 	CStringValue();
 	CStringValue (const char *txt, const char *name , AllocationTYPE alloctype = CValue::HEAPVALUE);
 
-	virtual ~CStringValue() {
-	};
+	virtual ~CStringValue() {}
 	/// CValue implementation
 	virtual bool		IsEqual(const STR_String & other);
 	virtual const STR_String &	GetText();
@@ -40,7 +39,7 @@ public:
 	
 	virtual	CValue*		Calc(VALUE_OPERATOR op, CValue *val);
 	virtual	CValue*		CalcFinal(VALUE_DATA_TYPE dtype, VALUE_OPERATOR op, CValue *val);
-	virtual void		SetValue(CValue* newval) { 	m_strString = newval->GetText(); SetModified(true);	};
+	virtual void		SetValue(CValue* newval) { 	m_strString = newval->GetText(); SetModified(true);	}
 	virtual CValue*		GetReplica();
 #ifdef WITH_PYTHON
 	virtual PyObject*	ConvertValueToPython() {

source/gameengine/GameLogic/SCA_PythonController.cpp

@@ -199,7 +199,7 @@ SCA_IActuator* SCA_PythonController::LinkedActuatorFromPy(PyObject *value)
 	
 	if (PyUnicode_Check(value)) {
 		/* get the actuator from the name */
-		char *name= _PyUnicode_AsString(value);
+		const char *name= _PyUnicode_AsString(value);
 		for(it = lacts.begin(); it!= lacts.end(); ++it) {
 			if( name == (*it)->GetName() ) {
 				return *it;
@@ -214,12 +214,11 @@ SCA_IActuator* SCA_PythonController::LinkedActuatorFromPy(PyObject *value)
 			}
 		}
 	}
-	
+
 	/* set the exception */
-	PyObject *value_str = PyObject_Repr(value); /* new ref */
-	PyErr_Format(PyExc_ValueError, "'%s' not in this python controllers actuator list", _PyUnicode_AsString(value_str));
-	Py_DECREF(value_str);
-	
+	PyErr_Format(PyExc_ValueError,
+	             "%R not in this python controllers actuator list", value);
+
 	return NULL;
 }
 
@@ -500,7 +499,7 @@ int SCA_PythonController::pyattr_set_script(void *self_v, const KX_PYATTRIBUTE_D
 {
 	SCA_PythonController* self= static_cast<SCA_PythonController*>(self_v);
 	
-	char *scriptArg = _PyUnicode_AsString(value);
+	const char *scriptArg = _PyUnicode_AsString(value);
 	
 	if (scriptArg==NULL) {
 		PyErr_SetString(PyExc_TypeError, "controller.script = string: Python Controller, expected a string script text");

source/gameengine/Ketsji/KX_Camera.cpp

@@ -883,7 +883,9 @@ bool ConvertPythonToCamera(PyObject * value, KX_Camera **object, bool py_none_ok
 		if (*object) {
 			return true;
 		} else {
-			PyErr_Format(PyExc_ValueError, "%s, requested name \"%s\" did not match any KX_Camera in this scene", error_prefix, _PyUnicode_AsString(value));
+			PyErr_Format(PyExc_ValueError,
+			             "%s, requested name \"%s\" did not match any KX_Camera in this scene",
+			             error_prefix, _PyUnicode_AsString(value));
 			return false;
 		}
 	}

source/gameengine/Ketsji/KX_PythonInit.cpp

@@ -705,7 +705,7 @@ static PyObject *gLibNew(PyObject*, PyObject* args)
 	KX_Scene *kx_scene= gp_KetsjiScene;
 	char *path;
 	char *group;
-	char *name;
+	const char *name;
 	PyObject *names;
 	int idcode;
 

source/gameengine/Ketsji/KX_PythonSeq.cpp

@@ -189,7 +189,7 @@ static PyObject *KX_PythonSeq_getIndex(PyObject* self, int index)
 	return NULL;
 }
 
-static PyObjectPlus * KX_PythonSeq_subscript__internal(PyObject *self, char *key)
+static PyObjectPlus * KX_PythonSeq_subscript__internal(PyObject *self, const char *key)
 {
 	PyObjectPlus *self_plus= BGE_PROXY_REF(((KX_PythonSeq *)self)->base);
 	
@@ -277,7 +277,7 @@ static PyObject * KX_PythonSeq_subscript(PyObject * self, PyObject *key)
 		return KX_PythonSeq_getIndex(self, PyLong_AsSsize_t( key ));
 	}
 	else if ( PyUnicode_Check(key) ) {
-		char *name = _PyUnicode_AsString(key);
+		const char *name = _PyUnicode_AsString(key);
 		PyObjectPlus *ret = KX_PythonSeq_subscript__internal(self, name);
 		
 		if(ret) {