feat: add --version option to deskflow-core

src/apps/deskflow-core/deskflow-core.cpp

@@ -6,6 +6,7 @@
  * SPDX-License-Identifier: GPL-2.0-only WITH LicenseRef-OpenSSL-Exception
  */
 
+#include "VersionInfo.h"
 #include "arch/Arch.h"
 #include "base/EventQueue.h"
 #include "base/Log.h"
@@ -21,6 +22,8 @@
 #include <QSharedMemory>
 #include <iostream>
 
+const static auto kHeader = QStringLiteral("%1-core: %2\n").arg(kAppId, kDisplayVersion);
+
 void showHelp()
 {
   std::cout << "Usage: deskflow-core <server | client> [...options]" << std::endl;
@@ -43,6 +46,20 @@ bool isHelp(int argc, char **argv)
   return false;
 }
 
+void showVersion()
+{
+  std::cout << qPrintable(kHeader) << qPrintable(kCopyright) << std::endl;
+}
+
+bool isVersion(int argc, char **argv)
+{
+  for (int i = 0; i < argc; ++i) {
+    if (argv[i] == std::string("--version") || argv[i] == std::string("-v"))
+      return true;
+  }
+  return false;
+}
+
 bool isServer(int argc, char **argv)
 {
   return (argc > 1 && argv[1] == std::string("server"));
@@ -65,6 +82,11 @@ int main(int argc, char **argv)
     return s_exitSuccess;
   }
 
+  if (isVersion(argc, argv)) {
+    showVersion();
+    return s_exitSuccess;
+  }
+
   // Create a shared memory segment with a unique key
   // This is to prevent a new instance from running if one is already running
   QSharedMemory sharedMemory("deskflow-core");