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+/*****************************************************************************\
+ *  Copyright (C) 2007-2019 Lawrence Livermore National Security, LLC.
+ *  Copyright (C) 2001-2007 The Regents of the University of California.
+ *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ *  Written by Jim Garlick <garlick@llnl.gov> and Albert Chu <chu11@llnl.gov>.
+ *  UCRL-CODE-2003-004.
+ *
+ *  This file is part of Genders, a cluster configuration database.
+ *  For details, see <http://www.llnl.gov/linux/genders/>.
+ *
+ *  Genders is free software; you can redistribute it and/or modify it under
+ *  the terms of the GNU General Public License as published by the Free
+ *  Software Foundation; either version 2 of the License, or (at your option)
+ *  any later version.
+ *
+ *  Genders is distributed in the hope that it will be useful, but WITHOUT ANY
+ *  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ *  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ *  details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with Genders.  If not, see <http://www.gnu.org/licenses/>.
+\*****************************************************************************/
+
+#ifndef _GENDERSPLUSPLUS_HPP
+#define _GENDERSPLUSPLUS_HPP
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+extern "C" {
+#include <genders.h>
+}
+
+namespace Gendersplusplus
+{
+
+/*
+ * GendersException
+ *
+ * May occur in any Genders class function.
+ */
+class GendersException
+{
+public:
+  GendersException();
+  GendersException(int errnum);
+  const char *errormsg() const;
+  int errnum() const;
+private:
+  int _errnum;
+};
+
+std::ostream &operator<<(std::ostream &output, const GendersException &e);
+
+class GendersExceptionOpen : public GendersException
+{
+public:
+  GendersExceptionOpen();
+};
+
+class GendersExceptionRead : public GendersException
+{
+public:
+  GendersExceptionRead();
+};
+
+class GendersExceptionParse : public GendersException
+{
+public:
+  GendersExceptionParse();
+};
+
+class GendersExceptionParameters : public GendersException
+{
+public:
+  GendersExceptionParameters();
+};
+
+class GendersExceptionNotfound : public GendersException
+{
+public:
+  GendersExceptionNotfound();
+};
+
+class GendersExceptionSyntax : public GendersException
+{
+public:
+  GendersExceptionSyntax();
+};
+
+class GendersExceptionInternal : public GendersException
+{
+public:
+  GendersExceptionInternal();
+};
+
+/*
+ * Genders
+ *
+ * C++ class for libgenders.  Operates nearly identically to classic
+ * genders C library.  Changes include:
+ *
+ * - Errors are returned via exceptions
+ * - Use of STL instead of genders specific data structures
+ * - Functions may take empty strings instead of NULL pointers for
+ *   defaults.
+ *
+ */
+class Genders
+{
+public:
+  Genders();
+  Genders(const std::string filename);
+  Genders(const Genders &copy);
+  const Genders &operator=(const Genders &right);
+  ~Genders();
+  unsigned int getnumnodes() const;
+  unsigned int getnumattrs() const;
+  unsigned int getmaxattrs() const;
+  std::string getnodename() const;
+  std::vector< std::string > getnodes(const std::string attr = "", const std::string val = "") const;
+  std::vector< std::pair< std::string, std::string > > getattr(const std::string node = "") const;
+  std::vector< std::string > getattr_all() const;
+  bool testattr(const std::string attr, std::string &val, const std::string node = "") const;
+  bool testattrval(const std::string attr, const std::string val = "", const std::string node = "") const;
+  bool isnode(const std::string node = "") const;
+  bool isattr(const std::string attr) const;
+  bool isattrval(const std::string attr, const std::string val) const;
+  std::vector< std::string > query(const std::string query = "") const;
+  bool testquery(const std::string query, const std::string node = "");
+private:
+  void _constructor(const std::string filename);
+  void _throw_exception(int errnum) const;
+  genders_t gh;
+};
+
+} // Gendersplusplus
+
+#endif /* _GENDERSPLUSPLUS_HPP */