+PARSER_STATE TryParse(const PARSERS& parsers, char ** argv, int argc)
+{
+PARSERS::const_iterator it = parsers.find(*argv);
+if (it != parsers.end())
+ return it->second(++argv, --argc);
+PARSER_STATE state;
+state.argc = argc;
+state.argv = argv;
+state.result = false;
+return state;
+}
+//-----------------------------------------------------------------------------
+PARSER_STATE ParseCommon(int argc, char ** argv, CONFIG& config)
+{
+if (pos == 0)
+ ++pos;
+
+PARSERS parsers;
+parsers.add<std::string>("-c", "--config", config.configFile);
+parsers.add<void>("-h", "--help", Usage, false);
+parsers.add<void>("--help-all", Usage, true);
+parsers.add<void>("-v", "--version", Version);
+
+while (true)
+ {
+ PARSER_STATE state(TryParse(parsers, argv, argc, config));
+ if (state.argv == argv)
+ return state; // No-op
+ if (state.argc == 0)
+ return state; // EOF
+ if (state.result)
+ return state; // Done
+ argv = state.argv;
+ argc = state.argc;
+ }
+
+assert(0 && "Can't be here.");
+return PARSER_STATE();
+}
+//-----------------------------------------------------------------------------