dataset.h

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#ifndef DATASET_H
#define DATASET_H
#pragma once
/***************************************************************************
 *   Copyright (C) 2007-2013 Mike Kinghan, imk@burroingroingjoing.com      *
 *   All rights reserved.                                                  *
 *                                                                         *
 *   Contributed originally by Mike Kinghan, imk@burroingroingjoing.com    *
 *                                                                         *
 *   Redistribution and use in source and binary forms, with or without    *
 *   modification, are permitted provided that the following conditions    *
 *   are met:                                                              *
 *                                                                         *
 *   Redistributions of source code must retain the above copyright        *
 *   notice, this list of conditions and the following disclaimer.         *
 *                                                                         *
 *   Redistributions in binary form must reproduce the above copyright     *
 *   notice, this list of conditions and the following disclaimer in the   *
 *   documentation and/or other materials provided with the distribution.  *
 *                                                                         *
 *   Neither the name of Mike Kinghan nor the names of its contributors    *
 *   may be used to endorse or promote products derived from this software *
 *   without specific prior written permission.                            *
 *                                                                         *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   *
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT     *
 *   LIMITED TO, THE IMPLIED WARRANTIES OF  MERCHANTABILITY AND FITNESS    *
 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE        *
 *   COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,   *
 *   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,  *
 *   BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS *
 *   OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED    *
 *   AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,*
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 *   DAMAGE.                                                               *
 *                                                                         *
 **************************************************************************/

#include "prohibit.h"
#include "file_tree.h"

struct dataset : private no_copy {

        struct selector {
                explicit selector(std::string const & extensions = std::string());

                bool operator()(std::string const & filename);

                unsigned files() const {
                        return _files;
                }
        private:
                std::vector<std::string> _filter_extensions;
                unsigned _files;
        };

        struct driver : file_tree::traverser {

                unsigned done_files() const {
                        return _done_files;
                }

                unsigned error_files() const {
                        return _error_files;
                }

                void at_file(std::string const & filename);

        private:
                unsigned _done_files = 0;
                unsigned _error_files = 0;
        };

        static void set_filter(std::string extensions) {
                _selector_ = selector(extensions);
        }
        static void add(std::string const & path);

        static void traverse() {
                _ftree_.traverse(_driver_);
        }

        static unsigned files() {
                return _selector_.files();
        }

        static unsigned done_files() {
                return _driver_.done_files();
        }

        static unsigned error_files() {
                return _driver_.error_files();
        }

private:

        static selector _selector_;
        static driver _driver_;
        static file_tree _ftree_;
};

#endif /* EOF*/