1 files changed, 81 insertions, 0 deletions
diff --git a/sources/shiboken6/ApiExtractor/dotview.cpp b/sources/shiboken6/ApiExtractor/dotview.cpp
new file mode 100644
index 000000000..0ead28f68
--- /dev/null
+++ b/sources/shiboken6/ApiExtractor/dotview.cpp
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt for Python.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "dotview.h"
+
+#include <QtCore/QDebug>
+#include <QtCore/QDir>
+#include <QtCore/QFile>
+#include <QtCore/QProcess>
+#include <QtCore/QTemporaryFile>
+
+bool showDotGraph(const QString &name, const QString &graph)
+{
+    const QString imageType = u"jpg"_qs;
+
+    // Write out the graph to a temporary file
+    QTemporaryFile dotFile(QDir::tempPath() + u'/' + name + u"_XXXXXX.dot"_qs);
+    if (!dotFile.open()) {
+        qWarning("Cannot open temporary file: %s", qPrintable(dotFile.errorString()));
+        return false;
+    }
+    const QString tempDotFile = dotFile.fileName();
+    dotFile.write(graph.toUtf8());
+    dotFile.close();
+
+    // Convert to image using "dot"
+    const QString imageFile = tempDotFile.left(tempDotFile.size() - 3) + imageType;
+    QProcess process;
+    process.start(u"dot"_qs, {u"-T"_qs + imageType, u"-o"_qs + imageFile, tempDotFile});
+    if (!process.waitForStarted() || !process.waitForFinished()) {
+        qWarning("Image conversion failed: %s", qPrintable(process.errorString()));
+        return false;
+    }
+    if (process.exitStatus() != QProcess::NormalExit || process.exitCode() != 0) {
+        qWarning("Image conversion failed (%d): %s",
+                 process.exitCode(),
+                 process.readAllStandardError().constData());
+        return false;
+    }
+
+    // Launch image. Should use QDesktopServices::openUrl(),
+    // but we don't link against QtGui
+#ifdef Q_OS_UNIX
+    const QString imageViewer = u"gwenview"_qs;
+#else
+    const QString imageViewer = u"mspaint"_qs;
+#endif
+    if (!QProcess::startDetached(imageViewer, {imageFile})) {
+        qWarning("Failed to launch viewer: %s", qPrintable(imageViewer));
+        return false;
+    }
+    qInfo().noquote().nospace() << "Viewing: "
+        << QDir::toNativeSeparators(tempDotFile)
+        << ' ' << QDir::toNativeSeparators(imageFile);
+    return true;
+}