ltl2tgba, randaut: better error reporting

* src/bin/ltl2tgba.cc, src/bin/randaut.cc: Catch exceptions
in main loop.
* src/tgbatest/ltl2tgba.test, src/tgbatest/randaut.test: Test
errors with unknown --dot argument.

src/bin/ltl2tgba.cc

@@ -60,7 +60,7 @@ static const argp_option options[] =
     /**************************************************/
     { "%f", 0, 0, OPTION_DOC | OPTION_NO_USAGE,
       "the formula, in Spot's syntax", 4 },
-    /**************************************************/
+   /**************************************************/
     { 0, 0, 0, 0, "Miscellaneous options:", -1 },
     { "extra-options", 'x', "OPTS", 0,
       "fine-tuning options (see spot-x (7))", 0 },
@@ -182,7 +182,14 @@ main(int argc, char** argv)
   trans.set_level(level);
 
   trans_processor processor(trans);
-  if (processor.run())
-    return 2;
+  try
+    {
+      if (processor.run())
+	return 2;
+    }
+  catch (const std::runtime_error& e)
+    {
+      error(2, 0, "%s", e.what());
+    }
   return 0;
 }

src/bin/randaut.cc

@@ -298,8 +298,15 @@ main(int argc, char** argv)
 
       auto runtime = sw.stop();
 
-      printer.print(aut, nullptr,
-		    opt_seed_str, automaton_num, runtime, nullptr);
+      try
+	{
+	  printer.print(aut, nullptr,
+			opt_seed_str, automaton_num, runtime, nullptr);
+	}
+      catch (const std::runtime_error& e)
+	{
+	  error(2, 0, "%s", e.what());
+	}
 
       ++automaton_num;
       if (opt_automata > 0 && automaton_num >= opt_automata)

src/tgbatest/ltl2tgba.test

 #!/bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Laboratoire de Recherche et
-# Développement de l'Epita (LRDE).
+# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Laboratoire
+# de Recherche et Développement de l'Epita (LRDE).
 # Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
 # département Systèmes Répartis Coopératifs (SRC), Université Pierre
 # et Marie Curie.
@@ -201,3 +201,7 @@ grep 'states: 4$' stdout
 ../../bin/ltlfilt -r -f '!{{a;b}[*]}' --equivalent-to '!a | X!b'
 ../../bin/ltlfilt    -f '{a[*];b[*]}' --equivalent-to 'a | b'
 ../../bin/ltlfilt -r -f '{a[*];b[*]}' --equivalent-to 'a | b'
+
+# test unknown dot options
+../../bin/ltl2tgba --dot=@ a 2>stderr && exit 1
+grep 'ltl2tgba: unknown option.*@' stderr

src/tgbatest/randaut.test

@@ -68,3 +68,6 @@ diff out expected
 
 $randaut -n 5 --stats='name: "%F-%L-%s-%c-%e"' a >out2
 diff out2 expected
+
+$randaut -n 5 --dot=@ a 2>stderr && exit 1
+grep 'randaut: unknown option.*@' stderr