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Diffstat (limited to 'examples/scriptableapplication/pythonutils.cpp')
| -rw-r--r-- | examples/scriptableapplication/pythonutils.cpp | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/examples/scriptableapplication/pythonutils.cpp b/examples/scriptableapplication/pythonutils.cpp new file mode 100644 index 000000000..27f1bc71c --- /dev/null +++ b/examples/scriptableapplication/pythonutils.cpp @@ -0,0 +1,169 @@ +/**************************************************************************** +** +** 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 |