Add function to obtain minetestmapper version

configdialog.cpp

@@ -12,6 +12,9 @@
 const QString ConfigSettings::defaultMapperExecutableName("minetestmapper");
 QStringList ConfigSettings::predefinedMapperLocations;
 
+QString ConfigSettings::versionUnknown("(unknown)");
+QString ConfigSettings::versionError("(error)");
+
 ConfigSettings::InitStatics::InitStatics()
 {
     #ifndef Q_OS_WIN
@@ -106,6 +109,39 @@ void ConfigDialog::on_browseMapper_clicked()
     }
 }
 
+QString ConfigSettings::getMapperVersion(const QString &mapperBinary, QWidget *parent)
+{
+    QProcess mapperProcess(parent);
+    mapperProcess.setProgram(mapperBinary);
+    mapperProcess.setArguments(QStringList("--version"));
+    mapperProcess.start();
+    if (!mapperProcess.waitForStarted(1000)) {
+        mapperProcess.terminate();
+        return ConfigSettings::versionError;
+    }
+    if (!mapperProcess.waitForFinished(1000)) {
+        mapperProcess.terminate();
+        if (!mapperProcess.waitForFinished(1000)) {
+            mapperProcess.kill();
+        }
+        return ConfigSettings::versionError;
+    }
+
+    QByteArray dataRaw;
+    QString data;
+    dataRaw = mapperProcess.readAllStandardError();
+    data = QString(dataRaw).trimmed();
+    if (data.contains("unrecognized option")) {
+        return ConfigSettings::versionUnknown;
+    }
+    dataRaw = mapperProcess.readAllStandardOutput();
+    data = QString(dataRaw).trimmed();
+    if (!data.contains("Version-ID:")) {
+        return ConfigSettings::versionUnknown;
+    }
+    return data.replace(QRegularExpression(".*Version-ID: *"),"");
+}
+
 QString ConfigSettings::getDefaultMapperExecutable(void)
 {
     QStringList locations = getMapperExecutables();

configdialog.h

@@ -13,10 +13,13 @@ struct ConfigSettings
 {
     QString mapperPath;
 
+    static QString versionUnknown;
+    static QString versionError;
     static QStringList getMapperExecutables(void);
     static QString getDefaultMapperExecutable(void);
     static const QString defaultMapperExecutableName;
     static QStringList predefinedMapperLocations;
+    static QString getMapperVersion(const QString &mapperBinary, QWidget *parent = NULL);
 
 private:
     struct InitStatics { InitStatics(void); };

mainwindow.cpp

@@ -227,6 +227,8 @@ void MainWindow::on_button_generate_clicked()
         return;
     }
 
+    qDebug() << QString("Minetestmapper version: ") + ConfigSettings::getMapperVersion(mapperBinary.fileName(), this);
+
     QDir worldPath = QDir(ui->path_World->text());
     if(!worldPath.exists()||worldPath.path()=="."||worldPath.path()=="/"){
         QMessageBox::critical(this, tr("no input world selected"),