Fixing MegaLinter error:

replacing filesystem function by ifstream

Author: gmantzar

PWGCF/FemtoDream/Utils/femtoDreamCutCulator.cxx

@@ -29,9 +29,9 @@ using namespace o2::analysis::femtoDream;
 int main(int /*argc*/, char* argv[])
 {
   std::string configFileName(argv[1]);
-  std::filesystem::path configFile{configFileName};
-
-  if (std::filesystem::exists(configFile)) {
+  std::ifstream configFile(configFileName); 
+  
+  if (configFile.is_open()) {
     FemtoDreamCutculator cut;
     cut.init(argv[1]);
 
@@ -97,7 +97,8 @@ int main(int /*argc*/, char* argv[])
 
   } else {
     std::cout << "The configuration file " << configFileName
-              << " could not be found.";
+              << " could not be found or could not be opened.";
+    return 1;
   }
 
   return 0;

PWGCF/FemtoDream/Utils/femtoDreamCutCulator.h

@@ -18,7 +18,6 @@
 #ifndef PWGCF_FEMTODREAM_UTILS_FEMTODREAMCUTCULATOR_H_
 #define PWGCF_FEMTODREAM_UTILS_FEMTODREAMCUTCULATOR_H_
 
-#include <filesystem>
 #include <bitset>
 #include <functional>
 #include <iostream>