[Positioning] Fix config parsing memory leaks

Do not use exit() from
UserInterface::print_information_and_exit_if_requested(), set owl_run to
false instead. This function is renamed print_information().

owlps-positioning/src/owlps-positioning.cc

@@ -14,27 +14,31 @@ using namespace std ;
 
 int main(int argc, char **argv)
 {
+  owl_run = owl_true ;
+
   /* Read options & configuration */
   delete new UserInterface(argc, argv) ;
 
-  /* Read input data */
-  delete new InputDataReader() ;
+  if (owl_run)
+    {
+      /* Read input data */
+      delete new InputDataReader() ;
 
-  /* Set up signal handlers */
-  struct sigaction action ;
-  action.sa_flags = 0 ;
-  sigemptyset(&action.sa_mask) ;
-  action.sa_handler = owl_sigint_handler ;
-  sigaction(SIGINT, &action, NULL) ;
-  action.sa_handler = owl_sigterm_handler ;
-  sigaction(SIGTERM, &action, NULL) ;
+      /* Set up signal handlers */
+      struct sigaction action ;
+      action.sa_flags = 0 ;
+      sigemptyset(&action.sa_mask) ;
+      action.sa_handler = owl_sigint_handler ;
+      sigaction(SIGINT, &action, NULL) ;
+      action.sa_handler = owl_sigterm_handler ;
+      sigaction(SIGTERM, &action, NULL) ;
 
-  /* Run! */
-  owl_run = owl_true ;
-  Positioning positioning ;
+      /* Run! */
+      Positioning positioning ;
 
-  /* Clean */
-  Stock::clear() ;
+      /* Clean */
+      Stock::clear() ;
+    }
 
   cerr << argv[0] << ": end." << endl ;
   return 0 ;

owlps-positioning/src/userinterface.cc

@@ -293,7 +293,9 @@ void UserInterface::fill_misc_options()
 void UserInterface::parse_options()
 {
   parse_command_line() ;
-  print_information_and_exit_if_requested() ;
+  print_information() ;
+  if (! owl_run)
+    return ;
 
   parse_file() ;
 
@@ -310,10 +312,12 @@ void UserInterface::parse_command_line() const
 }
 
 
-void UserInterface::print_information_and_exit_if_requested() const
+/**
+ * If information is printed, owl_run is set to false, to indicate that
+ * the program should stop.
+ */
+void UserInterface::print_information() const
 {
-  bool exit_program = false ;
-
   // Print version if requested
   if (Configuration::is_configured("version"))
     {
@@ -326,18 +330,15 @@ void UserInterface::print_information_and_exit_if_requested() const
           "unknown version"
 #endif // OWLPS_VERSION
           << ".\n" ;
-      exit_program = true ;
+      owl_run = owl_false ; // Tell main() to exit
     }
 
   // Print usage if requested
   if (Configuration::is_configured("help"))
     {
       cout << *cli_options ;
-      exit_program = true ;
+      owl_run = owl_false ; // Tell main() to exit
     }
-
-  if (exit_program)
-    exit(0) ;
 }
 
 

owlps-positioning/src/userinterface.hh

@@ -37,7 +37,7 @@ protected:
   void parse_file(void) const ;
 
   /// Prints usage and/or version information if requested by the user
-  void print_information_and_exit_if_requested(void) const ;
+  void print_information(void) const ;
   //@}
 
 public: