added an option for one file per partition to the command line interface

Common/CommandLine.cpp

@@ -106,6 +106,7 @@ std::vector<std::pair<std::string, std::string> > GetUsage()
   s.push_back(mp("-bgm file",          "Load background mesh from file"));
   s.push_back(mp("-check",             "Perform various consistency checks on mesh"));
   s.push_back(mp("-ignorePartBound",   "Ignore partitions boundaries"));
+  s.push_back(mp("-oneFilePerPart",    "Save mesh partitions in separate files"));
 #if defined(HAVE_FLTK)
   s.push_back(mp("Post-processing options:", ""));
   s.push_back(mp("-link int",          "Select link mode between views (0, 1, 2, 3, 4)"));
@@ -749,6 +750,10 @@ void GetOptions(int argc, char *argv[])
         i++;
         opt_mesh_ignore_part_bound(0, GMSH_SET, 1);
       }
+      else if(!strcmp(argv[i] + 1, "oneFilePerPart")) {
+        i++;
+        opt_mesh_msh_file_partitioned(0, GMSH_SET, 1);
+      }
       else if(!strcmp(argv[i] + 1, "edgelmin")) {
         i++;
         if(argv[i]) {