Add --propagate-exit-code option.

Propagate exist code from inner command to driver exit code.

Author: textshell

main.cpp

@@ -111,6 +111,7 @@ class Main {
 
         QObject::connect(&process, qOverload<int>(&QProcess::finished), [this](int code) {
             const QByteArray msg = QString("*exited:%0").arg(code).toUtf8();
+            exitCode = code;
             write(controlFd, msg.data(), msg.size() + 1);
             if (autoQuit) {
                 QCoreApplication::instance()->quit();
@@ -123,6 +124,10 @@ class Main {
         process.start();
     }
 
+    int getExitCode() {
+        return exitCode;
+    }
+
 private:
     void sendToInterior(char* data, ssize_t len) {
         ::write(process.masterFd, data, static_cast<size_t>(len));
@@ -308,6 +313,7 @@ class Main {
     QByteArray pendingControlData;
     VTermScreenCallbacks screenCallbacks;
     VTermStateFallbacks unhandled;
+    int exitCode = 22;
 
     // buffered screen state
     bool cursorVisible = true;
@@ -338,6 +344,7 @@ int main(int argc, char** argv) {
     parser.setOptionsAfterPositionalArgumentsMode(QCommandLineParser::ParseAsPositionalArguments);
     parser.addPositionalArgument("command", "Command to execute and connect to the terminal");
     parser.addOption({ "control-via-fd0", "control communication is via fd 0."});
+    parser.addOption({ "propagate-exit-code", "Propagate exist code from inner command to driver exit code."});
     parser.process(app);
     const QStringList args = parser.positionalArguments();
 
@@ -350,5 +357,5 @@ int main(int argc, char** argv) {
 
     app.exec();
 
-    return 0;
+    return parser.isSet("propagate-exit-code") ? m.getExitCode() : 0;
 }