Test auto updating.

scripts/makeappimage.sh

@@ -21,6 +21,7 @@ if [ "$ARCH" == "" ]; then
     ARCH="x86_64"
 fi
 
+wget "https://github.com/AppImage/AppImageUpdate/releases/download/continuous/appimageupdatetool-382-b61bee3-x86_64.AppImage" -O appdir/usr/bin/appimageupdatetool
 cp -f /usr/lib/*/libjack.so.0 appdir/usr/lib
 
 export UPD_INFO="gh-releases-zsync|NamedKitten|KittehPlayer|continuous|KittehPlayer-$ARCH.AppImage.zsync"

src/main.cpp

@@ -1,5 +1,8 @@
 #include <stdexcept>
 #include <clocale>
+#include <bits/stdc++.h> 
+#include <stdio.h>
+#include <stdlib.h>
 
 #include "config.h"
 #include "mpvobject.h"
@@ -15,12 +18,28 @@
 #include <QWidget>
 #include <QtGui/QOpenGLFramebufferObject>
 #include <QQuickView>
+#include <QProcessEnvironment>
 
 
 int main( int argc, char *argv[] )
 {
-    setenv("QT_QUICK_CONTROLS_STYLE","Desktop",1); 
     QApplication app(argc, argv);
+
+    for (int i = 1; i < argc; ++i) {
+        if (!qstrcmp(argv[i], "--update")) {
+            QString program = QProcessEnvironment::systemEnvironment().value("APPDIR", "/usr/bin") + "/appimageupdatetool";
+            QProcess updater;
+            updater.setProcessChannelMode(QProcess::ForwardedChannels);
+            updater.start(program, QStringList() << QProcessEnvironment::systemEnvironment().value("APPIMAGE", ""));
+            if(!updater.waitForStarted())
+                qDebug() << "Failed to start updater.";
+            qDebug() << program;
+            exit(0);
+        }
+    }
+    
+
+    setenv("QT_QUICK_CONTROLS_STYLE","Desktop",1);
     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     qmlRegisterType<MpvObject>("player", 1, 0, "MpvObject");