1 files changed, 58 insertions, 0 deletions
diff --git a/sources/shiboken6/ApiExtractor/dotview.cpp b/sources/shiboken6/ApiExtractor/dotview.cpp
new file mode 100644
index 000000000..0bd192257
--- /dev/null
+++ b/sources/shiboken6/ApiExtractor/dotview.cpp
@@ -0,0 +1,58 @@
+// Copyright (C) 2021 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "dotview.h"
+
+#include <QtCore/QDebug>
+#include <QtCore/QDir>
+#include <QtCore/QFile>
+#include <QtCore/QProcess>
+#include <QtCore/QTemporaryFile>
+
+using namespace Qt::StringLiterals;
+
+bool showDotGraph(const QString &name, const QString &graph)
+{
+    constexpr auto imageType = "jpg"_L1;
+
+    // Write out the graph to a temporary file
+    QTemporaryFile dotFile(QDir::tempPath() + u'/' + name + u"_XXXXXX.dot"_s);
+    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"_s, {u"-T"_s + imageType, u"-o"_s + 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
+    constexpr auto imageViewer = "gwenview"_L1;
+#else
+    constexpr auto imageViewer = "mspaint"_L1;
+#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;
+}