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/*=========================================================================
Program: ParaView
Module: vtkPVPythonInteractiveInterpretor.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkPython.h"
#include "vtkPVPythonInteractiveInterpretor.h"
#include "vtkObjectFactory.h"
#include <string>
class vtkPVPythonInteractiveInterpretor::vtkInternal
{
public:
PyObject* InteractiveConsole;
};
vtkStandardNewMacro(vtkPVPythonInteractiveInterpretor);
//----------------------------------------------------------------------------
vtkPVPythonInteractiveInterpretor::vtkPVPythonInteractiveInterpretor()
{
this->Internal = new vtkInternal;
this->Internal->InteractiveConsole = 0;
}
//----------------------------------------------------------------------------
vtkPVPythonInteractiveInterpretor::~vtkPVPythonInteractiveInterpretor()
{
if (this->Internal->InteractiveConsole)
{
this->MakeCurrent();
Py_DECREF(this->Internal->InteractiveConsole);
this->Internal->InteractiveConsole = 0;
this->ReleaseControl();
}
delete this->Internal;
}
//----------------------------------------------------------------------------
void vtkPVPythonInteractiveInterpretor::InitializeInternal()
{
this->Superclass::InitializeInternal();
// set up the code.InteractiveConsole instance that we'll use.
const char* code =
"import code\n"
"__vtkConsole=code.InteractiveConsole(locals())\n";
// The cast is necessary because PyRun_SimpleString() hasn't always been
// const-correct
PyRun_SimpleString(const_cast<char*>(code));
// Now get the reference to __vtkConsole and save the pointer.
PyObject* main_module = PyImport_AddModule((char*)"__main__");
PyObject* global_dict = PyModule_GetDict(main_module);
this->Internal->InteractiveConsole = PyDict_GetItemString(
global_dict, "__vtkConsole");
if (this->Internal->InteractiveConsole)
{
Py_INCREF(this->Internal->InteractiveConsole);
}
else
{
vtkErrorMacro("Failed to locate the InteractiveConsole object.");
}
}
//----------------------------------------------------------------------------
bool vtkPVPythonInteractiveInterpretor::Push(const char* const code)
{
bool ret_value = false;
if (this->Internal->InteractiveConsole)
{
this->MakeCurrent();
// The embedded python interpreter cannot handle DOS line-endings, see
// http://sourceforge.net/tracker/?group_id=5470&atid=105470&func=detail&aid=1167922
std::string buffer = code ? code : "";
// replace "\r\n" with "\n"
std::string::size_type i = buffer.find("\r\n");
for(; i != std::string::npos; i = buffer.find("\r\n", i))
{
buffer.replace(i, 2, "\n");
i++;
}
// replace "\r" with "\n" (sometimes seen on Mac)
i = buffer.find("\r");
for(; i != std::string::npos; i = buffer.find("\r", i))
{
buffer.replace(i, 1, "\n");
i++;
}
PyObject *res = PyObject_CallMethod(this->Internal->InteractiveConsole,
(char*)"push", (char*)"z", buffer.c_str());
if (res)
{
int status = 0;
if (PyArg_Parse(res, (char*)"i", &status))
{
ret_value = (status>0);
}
Py_DECREF(res);
}
this->ReleaseControl();
}
return ret_value;
}
//----------------------------------------------------------------------------
void vtkPVPythonInteractiveInterpretor::ResetBuffer()
{
if (this->Internal->InteractiveConsole)
{
this->MakeCurrent();
const char* code = "__vtkConsole.resetbuffer()\n";
// The cast is necessary because PyRun_SimpleString() hasn't always been
// const-correct
PyRun_SimpleString(const_cast<char*>(code));
this->ReleaseControl();
}
}
//----------------------------------------------------------------------------
void vtkPVPythonInteractiveInterpretor::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
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