sanity checks

tutorials/c++/t8.cpp

@@ -75,10 +75,15 @@ int main(int argc, char **argv)
   // If we were to follow the geo example blindly, we would read the number of
   // views from the relevant option value, and use the gmsh::option::setNumber()
   // and gmsh::option::setString() functions. A nicer way is to use
-  // gmsh::view::getTags() and to use the gmsh::view::setNumber() and
-  // gmsh::view::setString() functions.
+  // gmsh::view::getTags() and to use the gmsh::view::option::setNumber() and
+  // gmsh::view::option::setString() functions.
   std::vector<int> v;
   gmsh::view::getTags(v);
+  if(v.size() != 4) {
+    gmsh::logger::write("Wrong number of views!", "error");
+    gmsh::finalize();
+    return 1;
+  }
 
   gmsh::view::option::setNumber(v[0], "IntervalsType", 2);
   gmsh::view::option::setNumber(v[0], "OffsetZ", 0.05);

tutorials/c++/t9.cpp

@@ -35,6 +35,11 @@ int main(int argc, char **argv)
 
   std::vector<int> v;
   gmsh::view::getTags(v);
+  if(v.size() != 1) {
+    gmsh::logger::write("Wrong number of views!", "error");
+    gmsh::finalize();
+    return 1;
+  }
 
   // We then set some options for the `Isosurface' plugin (which extracts an
   // isosurface from a 3D scalar view), and run it:

tutorials/python/t8.py

@@ -70,11 +70,15 @@ if '-nopopup' not in sys.argv:
 # We also set some options for each post-processing view:
 
 # If we were to follow the geo example blindly, we would read the number of
-# views from the relevant option value, and use the gmsh.option.setNumber()
-# and gmsh.option.setString() functions. A nicer way is to use
-# gmsh.view.getTags() and to use the gmsh.view.setNumber() and
-# gmsh.view.setString() functions.
+# views from the relevant option value, and use the gmsh.option.setNumber() and
+# gmsh.option.setString() functions. A nicer way is to use gmsh.view.getTags()
+# and to use the gmsh.view.option.setNumber() and gmsh.view.option.setString()
+# functions.
 v = gmsh.view.getTags()
+if len(v) != 4:
+    gmsh.logger.write("Wrong number of views!", "error")
+    gmsh.finalize()
+    exit()
 
 # We set some options for each post-processing view:
 gmsh.view.option.setNumber(v[0], "IntervalsType", 2)

tutorials/python/t9.py

@@ -25,6 +25,10 @@ gmsh.initialize()
 path = os.path.dirname(os.path.abspath(__file__))
 gmsh.merge(os.path.join(path, os.pardir, 'view3.pos'))
 v = gmsh.view.getTags()
+if len(v) != 1:
+    gmsh.logger.write("Wrong number of views!", "error")
+    gmsh.finalize()
+    exit()
 
 # We then set some options for the `Isosurface' plugin (which extracts an
 # isosurface from a 3D scalar view), and run it: