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MainPy.cpp
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MainPy.cpp
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/***************************************************************************
* Copyright (c) 2008 Jürgen Riegel <juergen.riegel@web.de> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library General Public License (LGPL) *
* as published by the Free Software Foundation; either version 2 of *
* the License, or (at your option) any later version. *
* for detail see the LICENCE text file. *
* *
* FreeCAD 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with FreeCAD; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
* USA *
* *
***************************************************************************/
#include <FCConfig.h>
#ifdef _PreComp_
#undef _PreComp_
#endif
#if defined(FC_OS_WIN32)
#include <windows.h>
#endif
#if defined(FC_OS_LINUX) || defined(FC_OS_BSD)
#include <unistd.h>
#endif
#ifdef FC_OS_MACOSX
#include <mach-o/dyld.h>
#include <string>
#endif
#if HAVE_CONFIG_H
#include <config.h>
#endif // HAVE_CONFIG_H
#include <cstdio>
#include <sstream>
#include <iostream>
#include <QByteArray>
// FreeCAD Base header
#include <Base/ConsoleObserver.h>
#include <Base/Exception.h>
#include <Base/PyObjectBase.h>
#include <Base/Sequencer.h>
#include <App/Application.h>
#if defined(FC_OS_WIN32)
/** DllMain is called when DLL is loaded
*/
BOOL APIENTRY DllMain(HANDLE hModule, DWORD ul_reason_for_call, LPVOID /*lpReserved*/)
{
switch (ul_reason_for_call) {
case DLL_PROCESS_ATTACH: {
// This name is preliminary, we pass it to Application::init() in initFreeCAD()
// which does the rest.
char szFileName[MAX_PATH];
GetModuleFileNameA((HMODULE)hModule, szFileName, MAX_PATH - 1);
App::Application::Config()["AppHomePath"] = szFileName;
} break;
default:
break;
}
return true;
}
#elif defined(FC_OS_LINUX) || defined(FC_OS_BSD)
#ifndef GNU_SOURCE
#define GNU_SOURCE
#endif
#include <dlfcn.h>
#elif defined(FC_OS_CYGWIN)
#include <windows.h>
#endif
PyMOD_INIT_FUNC(FreeCAD)
{
// Init phase ===========================================================
App::Application::Config()["ExeName"] = "FreeCAD";
App::Application::Config()["ExeVendor"] = "FreeCAD";
App::Application::Config()["AppDataSkipVendor"] = "true";
QByteArray path;
#if defined(FC_OS_WIN32)
path = App::Application::Config()["AppHomePath"].c_str();
#elif defined(FC_OS_CYGWIN)
HMODULE hModule = GetModuleHandle("FreeCAD.dll");
char szFileName[MAX_PATH];
GetModuleFileNameA(hModule, szFileName, MAX_PATH - 1);
path = szFileName;
#elif defined(FC_OS_LINUX) || defined(FC_OS_BSD)
putenv("LANG=C");
putenv("LC_ALL=C");
// get whole path of the library
Dl_info info;
int ret = dladdr((void*)PyInit_FreeCAD, &info);
if ((ret == 0) || (!info.dli_fname)) {
PyErr_SetString(PyExc_ImportError, "Cannot get path of the FreeCAD module!");
return nullptr;
}
path = info.dli_fname;
// this is a workaround to avoid a crash in libuuid.so
#elif defined(FC_OS_MACOSX)
// The MacOS approach uses the Python sys.path list to find the path
// to FreeCAD.so - this should be OS-agnostic, except these two
// strings, and the call to access().
const static char libName[] = "/FreeCAD.so";
const static char upDir[] = "/../";
PyObject* pySysPath = PySys_GetObject("path");
if (PyList_Check(pySysPath)) {
int i;
// pySysPath should be a *PyList of strings - iterate through it
// backwards since the FreeCAD path was likely appended just before
// we were imported.
for (i = PyList_Size(pySysPath) - 1; i >= 0; --i) {
const char* basePath;
PyObject* pyPath = PyList_GetItem(pySysPath, i);
long sz = 0;
if (PyUnicode_Check(pyPath)) {
// Python 3 string
basePath = PyUnicode_AsUTF8AndSize(pyPath, &sz);
}
else {
continue;
}
if (sz + sizeof(libName) > PATH_MAX) {
continue;
}
path = basePath;
// append libName to the path
if (access(path + libName, R_OK | X_OK) == 0) {
// The FreeCAD "home" path is one level up from
// libName, so replace libName with upDir.
path += upDir;
break;
}
}
}
if (path.isEmpty()) {
PyErr_SetString(PyExc_ImportError, "Cannot get path of the FreeCAD module!");
return nullptr;
}
#else
#error "Implement: Retrieve the path of the module for your platform."
#endif
int argc = 1;
std::vector<char*> argv;
argv.push_back(path.data());
try {
// Inits the Application
App::Application::init(argc, argv.data());
}
catch (const Base::Exception& e) {
std::string appName = App::Application::Config()["ExeName"];
std::stringstream msg;
msg << "While initializing " << appName << " the following exception occurred: '"
<< e.what() << "'\n\n";
msg << "\nPlease contact the application's support team for more information.\n\n";
printf("Initialization of %s failed:\n%s", appName.c_str(), msg.str().c_str());
}
Base::EmptySequencer* seq = new Base::EmptySequencer();
(void)seq;
static Base::RedirectStdOutput stdcout;
static Base::RedirectStdLog stdclog;
static Base::RedirectStdError stdcerr;
std::cout.rdbuf(&stdcout);
std::clog.rdbuf(&stdclog);
std::cerr.rdbuf(&stdcerr);
PyObject* modules = PyImport_GetModuleDict();
PyObject* module = PyDict_GetItemString(modules, "FreeCAD");
if (!module) {
PyErr_SetString(PyExc_ImportError, "Failed to load FreeCAD module!");
}
return module;
}