+++ /dev/null
-// Copyright (C) 2005 OPEN CASCADE, CEA/DEN, EDF R&D, PRINCIPIA R&D
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either
-// version 2.1 of the License.
-//
-// This library is distributed in the hope that it will be useful
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-//
-// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
-//
-// SALOME SALOMEGUI : implementation of desktop and GUI kernel
-//
-// File : PyInterp_base.cxx
-// Author : Christian CAREMOLI, Paul RASCLE, EDF
-// Module : SALOME
-// $Header$
-
-
-#include "PyInterp_base.h" // this include must be first (see PyInterp_base.h)!
-
-#include <cStringIO.h>
-
-#include <string>
-#include <vector>
-
-using namespace std;
-
-PyLockWrapper::PyLockWrapper(PyThreadState* theThreadState):
- myThreadState(theThreadState),
- mySaveThreadState(0)
-{
-#if defined(USE_GILSTATE)
- if (myThreadState->interp == PyInterp_base::_interp) {
- _savestate = PyGILState_Ensure();
- } else {
- PyEval_AcquireThread(myThreadState);
- }
-#else
- PyEval_AcquireThread(myThreadState);
-#endif
-}
-
-PyLockWrapper::~PyLockWrapper()
-{
-#if defined(USE_GILSTATE)
- if (myThreadState->interp == PyInterp_base::_interp) {
- PyGILState_Release(_savestate);
- } else {
- PyEval_ReleaseThread(myThreadState);
- }
-#else
- PyEval_ReleaseThread(myThreadState);
-#endif
-}
-
-class PyReleaseLock{
-public:
- ~PyReleaseLock(){
- PyEval_ReleaseLock();
- }
-};
-
-
-PyLockWrapper PyInterp_base::GetLockWrapper(){
- return _tstate;
-}
-
-
-// main python interpreter (static attributes)
-
-int PyInterp_base::_argc = 1;
-char* PyInterp_base::_argv[] = {""};
-
-PyObject *PyInterp_base::builtinmodule = NULL;
-
-PyThreadState *PyInterp_base::_gtstate = NULL;
-PyInterpreterState *PyInterp_base::_interp = NULL;
-
-
-/*!
- * basic constructor here : herited classes constructors must call initalize() method
- * defined here.
- */
-PyInterp_base::PyInterp_base(): _tstate(0), _vout(0), _verr(0), _g(0), _atFirst(true)
-{
-}
-
-PyInterp_base::~PyInterp_base()
-{
-}
-
-
-/*!
- * Must be called by herited classes constructors. initialize() calls virtuals methods
- * initstate & initcontext, not defined here in base class. initstate & initcontext methods
- * must be implemented in herited classes, following the Python interpreter policy
- * (mono or multi interpreter...).
- */
-void PyInterp_base::initialize()
-{
- _history.clear(); // start a new list of user's commands
- _ith = _history.begin();
-
- init_python();
- // Here the global lock is released
-
- initState();
-
- PyLockWrapper aLock= GetLockWrapper();
-
- initContext();
-
- // used to interpret & compile commands
- PyObjWrapper m(PyImport_ImportModule("codeop"));
- if(!m){
- PyErr_Print();
- return;
- }
-
- // Create cStringIO to capture stdout and stderr
- PycString_IMPORT;
- if (PycStringIO) { // CTH11627 : additional check
- _vout = PycStringIO->NewOutput(128);
- _verr = PycStringIO->NewOutput(128);
- }
-
- // All the initRun outputs are redirected to the standard output (console)
- initRun();
-}
-
-void PyInterp_base::init_python()
-{
- _atFirst = false;
- if (Py_IsInitialized())
- return;
-
- // Python is not initialized
- Py_SetProgramName(_argv[0]);
- Py_Initialize(); // Initialize the interpreter
- PySys_SetArgv(_argc, _argv);
- PyEval_InitThreads(); // Create (and acquire) the interpreter lock
- _interp = PyThreadState_Get()->interp;
- _gtstate = PyEval_SaveThread(); // Release global thread state
-}
-
-string PyInterp_base::getbanner()
-{
- // Should we take the lock ?
- // PyEval_RestoreThread(_tstate);
- string aBanner("Python ");
- aBanner = aBanner + Py_GetVersion() + " on " + Py_GetPlatform() ;
- aBanner = aBanner + "\ntype help to get general information on environment\n";
- //PyEval_SaveThread();
- return aBanner;
-}
-
-
-int PyInterp_base::initRun()
-{
- PySys_SetObject("stderr",_verr);
- PySys_SetObject("stdout",_vout);
-
- PyObjWrapper verr(PyObject_CallMethod(_verr,"reset",""));
- PyObjWrapper vout(PyObject_CallMethod(_vout,"reset",""));
-
- //PyObject *m = PyImport_GetModuleDict();
-
- PySys_SetObject("stdout",PySys_GetObject("__stdout__"));
- PySys_SetObject("stderr",PySys_GetObject("__stderr__"));
-
- return 0;
-}
-
-
-/*!
- * This function compiles a string (command) and then evaluates it in the dictionnary
- * context if possible.
- * Returns :
- * -1 : fatal error
- * 1 : incomplete text
- * 0 : complete text executed with success
- */
-int compile_command(const char *command,PyObject *context)
-{
- PyObject *m = PyImport_AddModule("codeop");
- if(!m){ // Fatal error. No way to go on.
- PyErr_Print();
- return -1;
- }
- PyObjWrapper v(PyObject_CallMethod(m,"compile_command","s",command));
- if(!v){
- // Error encountered. It should be SyntaxError,
- //so we don't write out traceback
- PyObjWrapper exception, value, tb;
- PyErr_Fetch(&exception, &value, &tb);
- PyErr_NormalizeException(&exception, &value, &tb);
- PyErr_Display(exception, value, NULL);
- return -1;
- }else if (v == Py_None){
- // Incomplete text we return 1 : we need a complete text to execute
- return 1;
- }else{
- // Complete and correct text. We evaluate it.
- //#if PY_VERSION_HEX < 0x02040000 // python version earlier than 2.4.0
- // PyObjWrapper r(PyEval_EvalCode(v,context,context));
- //#else
- PyObjWrapper r(PyEval_EvalCode((PyCodeObject *)(void *)v,context,context));
- //#endif
- if(!r){
- // Execution error. We return -1
- PyErr_Print();
- return -1;
- }
- // The command has been successfully executed. Return 0
- return 0;
- }
-}
-
-
-int PyInterp_base::run(const char *command)
-{
- if(_atFirst){
- int ret = 0;
- ret = simpleRun("from Help import *");
- if (ret) {
- _atFirst = false;
- return ret;
- }
- ret = simpleRun("import salome");
- if (ret) {
- _atFirst = false;
- return ret;
- }
- ret = simpleRun("salome.salome_init(0,1)");
- if (ret) {
- _atFirst = false;
- return ret;
- }
- _atFirst = false;
- }
- return simpleRun(command);
-}
-
-
-int PyInterp_base::simpleRun(const char *command)
-{
- if( !_atFirst && strcmp(command,"") != 0 ) {
- _history.push_back(command);
- _ith = _history.end();
- }
-
- // We come from C++ to enter Python world
- // We need to acquire the Python global lock
- //PyLockWrapper aLock(_tstate); // san - lock is centralized now
-
- // Reset redirected outputs before treatment
- PySys_SetObject("stderr",_verr);
- PySys_SetObject("stdout",_vout);
-
- PyObjWrapper verr(PyObject_CallMethod(_verr,"reset",""));
- PyObjWrapper vout(PyObject_CallMethod(_vout,"reset",""));
-
- int ier = compile_command(command,_g);
-
- // Outputs are redirected on standards outputs (console)
- PySys_SetObject("stdout",PySys_GetObject("__stdout__"));
- PySys_SetObject("stderr",PySys_GetObject("__stderr__"));
-
- return ier;
-}
-
-
-const char * PyInterp_base::getPrevious()
-{
- if(_ith != _history.begin()){
- _ith--;
- return (*_ith).c_str();
- }
- else
- return BEGIN_HISTORY_PY;
-}
-
-
-const char * PyInterp_base::getNext()
-{
- if(_ith != _history.end()){
- _ith++;
- }
- if (_ith == _history.end())
- return TOP_HISTORY_PY;
- else
- return (*_ith).c_str();
-}
-
-
-string PyInterp_base::getverr(){
- //PyLockWrapper aLock(_tstate);
- PyObjWrapper v(PycStringIO->cgetvalue(_verr));
- string aRet(PyString_AsString(v));
- return aRet;
-}
-
-
-string PyInterp_base::getvout(){
- //PyLockWrapper aLock(_tstate);
- PyObjWrapper v(PycStringIO->cgetvalue(_vout));
- string aRet(PyString_AsString(v));
- return aRet;
-}
+++ /dev/null
-// Copyright (C) 2005 OPEN CASCADE, CEA/DEN, EDF R&D, PRINCIPIA R&D
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either
-// version 2.1 of the License.
-//
-// This library is distributed in the hope that it will be useful
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-//
-// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
-//
-// SALOME SALOMEGUI : implementation of desktop and GUI kernel
-//
-// File : PyInterp_base.h
-// Author : Christian CAREMOLI, Paul RASCLE, EDF
-// Module : SALOME
-
-#ifndef _PYINTERP_BASE_H_
-#define _PYINTERP_BASE_H_
-
-#include "PyInterp.h"
-
-#include <list>
-#include <string>
-#include <iostream>
-
-// include order important!
-// pthread then python then qt
-//#include <pthread.h> // must be before Python.h !
-
-#include <Python.h> // must be before qt includes ...
-#include <compile.h> // Python include needed for versions before 2.4. Included in Python.h now.
-#include <eval.h> // Python include needed for versions before 2.4. Included in Python.h now.
-
-//#if PY_VERSION_HEX < 0x02040000 // python version earlier than 2.4.0
-//extern "C" PyObject * PyEval_EvalCode(PyObject *co, PyObject *g, PyObject *l);
-//#endif
-
-/* For 2.3, use the PyGILState_ calls */
-#if (PY_VERSION_HEX >= 0x02030000)
-#define USE_GILSTATE
-#endif
-
-#define TOP_HISTORY_PY "--- top of history ---"
-#define BEGIN_HISTORY_PY "--- begin of history ---"
-
-class PYINTERP_EXPORT PyLockWrapper
-{
- PyThreadState* myThreadState;
- PyThreadState* mySaveThreadState;
-#if defined(USE_GILSTATE)
- PyGILState_STATE _savestate ;
-#endif
- public:
- PyLockWrapper(PyThreadState* theThreadState);
- ~PyLockWrapper();
-};
-
-class PYINTERP_EXPORT PyInterp_base{
- public:
- static int _argc;
- static char* _argv[];
- static PyObject *builtinmodule;
- static PyThreadState *_gtstate;
- static PyInterpreterState *_interp;
-
- PyInterp_base();
- virtual ~PyInterp_base();
-
- virtual void initialize();
- virtual void init_python();
- // init_python() made virtual to:
- // 1. Remove dependency on KERNEL in light SALOME configuration
- // 2. Allow redefinition of this method in SalomeApp_PyInterp class (it should be empty there and rely on KERNEL_PYTHON)
-
- virtual int run(const char *command);
-
- PyLockWrapper GetLockWrapper();
-
- std::string getbanner();
- std::string getverr();
- std::string getvout();
-
- const char * getPrevious();
- const char * getNext();
-
- protected:
- PyThreadState * _tstate;
- PyObject * _vout;
- PyObject * _verr;
- PyObject * _g;
- PyObject * _codeop;
- std::list<std::string> _history;
- std::list<std::string>::iterator _ith;
- bool _atFirst;
-
- int simpleRun(const char* command);
- int initRun();
-
- virtual bool initState() = 0;
- virtual bool initContext() = 0;
-};
-
-
-class PYINTERP_EXPORT PyObjWrapper{
- PyObject* myObject;
-public:
- PyObjWrapper(PyObject* theObject): myObject(theObject) {}
- PyObjWrapper(): myObject(0) {}
- operator PyObject*(){
- return myObject;
- }
- PyObject* operator->(){
- return myObject;
- }
- PyObject* get(){
- return myObject;
- }
- bool operator!(){
- return !myObject;
- }
- bool operator==(PyObject* theObject){
- return myObject == theObject;
- }
- PyObject** operator&(){
- return &myObject;
- }
- PyObjWrapper& operator=(PyObjWrapper* theObjWrapper){
- Py_XDECREF(myObject);
- myObject = theObjWrapper->myObject;
- return *this;
- }
- virtual ~PyObjWrapper(){
- Py_XDECREF(myObject);
- }
-};
-
-#endif
