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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the PySide examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "pythonutils.h"
#include <QtCore/QByteArray>
#include <QtCore/QCoreApplication>
#include <QtCore/QDebug>
#include <QtCore/QStringList>
#include <sbkpython.h>
#include <sbkconverter.h>
#include <sbkmodule.h>
/* from AppLib bindings */
#if PY_MAJOR_VERSION >= 3
extern "C" PyObject *PyInit_AppLib();
#else
extern "C" void initAppLib();
#endif
// This variable stores all Python types exported by this module.
extern PyTypeObject **SbkAppLibTypes;
// This variable stores all type converters exported by this module.
extern SbkConverter **SbkAppLibTypeConverters;
namespace PythonUtils {
static State state = PythonUninitialized;
static void cleanup()
{
if (state > PythonUninitialized) {
Py_Finalize();
state = PythonUninitialized;
}
}
State init()
{
if (state > PythonUninitialized)
return state;
// If there is an active python virtual environment, use that environment's packages location.
QByteArray virtualEnvPath = qgetenv("VIRTUAL_ENV");
if (!virtualEnvPath.isEmpty())
qputenv("PYTHONHOME", virtualEnvPath);
Py_Initialize();
qAddPostRoutine(cleanup);
state = PythonInitialized;
#if PY_MAJOR_VERSION >= 3
const bool pythonInitialized = PyInit_AppLib() != nullptr;
#else
const bool pythonInitialized = true;
initAppLib();
#endif
const bool pyErrorOccurred = PyErr_Occurred() != nullptr;
if (pythonInitialized && !pyErrorOccurred) {
state = AppModuleLoaded;
} else {
if (pyErrorOccurred)
PyErr_Print();
qWarning("Failed to initialize the module.");
}
return state;
}
bool bindAppObject(const QString &moduleName, const QString &name,
int index, QObject *o)
{
if (init() != AppModuleLoaded)
return false;
PyTypeObject *typeObject = SbkAppLibTypes[index];
PyObject *po = Shiboken::Conversions::pointerToPython(reinterpret_cast<const SbkObjectType *>(typeObject), o);
if (!po) {
qWarning() << __FUNCTION__ << "Failed to create wrapper for" << o;
return false;
}
Py_INCREF(po);
PyObject *module = PyImport_AddModule(moduleName.toLocal8Bit().constData());
if (!module) {
Py_DECREF(po);
if (PyErr_Occurred())
PyErr_Print();
qWarning() << __FUNCTION__ << "Failed to locate module" << moduleName;
return false;
}
if (PyModule_AddObject(module, name.toLocal8Bit().constData(), po) < 0) {
if (PyErr_Occurred())
PyErr_Print();
qWarning() << __FUNCTION__ << "Failed add object" << name << "to" << moduleName;
return false;
}
return true;
}
bool runScript(const QStringList &script)
{
if (init() == PythonUninitialized)
return false;
bool result = true;
for (const QString& lineS : script) {
const QByteArray line = lineS.toUtf8();
if (PyRun_SimpleString(line.constData()) == -1) {
if (PyErr_Occurred())
PyErr_Print();
qWarning() << __FUNCTION__ << "Error at" << line;
result = false;
break;
}
}
return result;
}
} // namespace PythonUtils
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