refactor. add LammpsWrapper class to hide plugin defines and interface changes.

tools/lammps-gui/lammpswrapper.h

@@ -0,0 +1,49 @@
+/* -*- c++ -*- ----------------------------------------------------------
+   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
+   https://www.lammps.org/, Sandia National Laboratories
+   LAMMPS development team: developers@lammps.org
+
+   Copyright (2003) Sandia Corporation.  Under the terms of Contract
+   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
+   certain rights in this software.  This software is distributed under
+   the GNU General Public License.
+
+   See the README file in the top-level LAMMPS directory.
+------------------------------------------------------------------------- */
+
+#ifndef LAMMPSWRAPPER_H
+#define LAMMPSWRAPPER_H
+
+class LammpsWrapper {
+public:
+    LammpsWrapper();
+
+public:
+    void open(int nargs, char **args);
+    void close();
+    void finalize();
+
+    void command(const char *);
+    void commands_string(const char *);
+
+    void force_timeout();
+
+    int extract_setting(const char *keyword);
+    double get_thermo(const char *keyword);
+    bool is_open() const { return lammps_handle != nullptr; }
+    bool is_running();
+    bool has_error() const;
+    int get_last_error_message(char *errorbuf, int buflen);
+
+    bool load_lib(const char *lammpslib);
+    bool has_plugin() const;
+
+private:
+    void *lammps_handle;
+    void *plugin_handle;
+};
+#endif
+
+// Local Variables:
+// c-basic-offset: 4
+// End: