1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt for Python 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/QOperatingSystemVersion>
#include <QtCore/QStringList>
#include <QtCore/QTemporaryFile>
#include <QtCore/QDir>
#include <sbkpython.h>
#include <sbkconverter.h>
#include <sbkmodule.h>
/* from AppLib bindings */
extern "C" PyObject *PyInit_AppLib();
static const char moduleName[] = "AppLib";
// 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;
}
}
static const char virtualEnvVar[] = "VIRTUAL_ENV";
// If there is an active python virtual environment, use that environment's
// packages location.
static void initVirtualEnvironment()
{
// As of Python 3.8, Python is no longer able to run stand-alone in a
// virtualenv due to missing libraries. Add the path to the modules instead.
if (QOperatingSystemVersion::currentType() == QOperatingSystemVersion::Windows
&& (PY_MAJOR_VERSION > 3 || (PY_MAJOR_VERSION == 3 && PY_MINOR_VERSION >= 8))) {
const QByteArray virtualEnvPath = qgetenv(virtualEnvVar);
qputenv("PYTHONPATH", virtualEnvPath + "\\Lib\\site-packages");
}
}
State init()
{
if (state > PythonUninitialized)
return state;
if (qEnvironmentVariableIsSet(virtualEnvVar))
initVirtualEnvironment();
if (PyImport_AppendInittab(moduleName, PyInit_AppLib) == -1) {
qWarning("Failed to add the module '%s' to the table of built-in modules.", moduleName);
return state;
}
Py_Initialize();
qAddPostRoutine(cleanup);
state = PythonInitialized;
const bool pythonInitialized = PyInit_AppLib() != nullptr;
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(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;
// Concatenating all the lines
QString content;
QTextStream ss(&content);
for (const QString &line: script)
ss << line << "\n";
// Executing the whole script as one line
bool result = true;
const QByteArray line = content.toUtf8();
if (PyRun_SimpleString(line.constData()) == -1) {
if (PyErr_Occurred())
PyErr_Print();
result = false;
}
return result;
}
} // namespace PythonUtils
|
