FileManager.hh

//
// This file is part of MARLEY (Model of Argon Reaction Low Energy Yields)
//
// MARLEY is free software: you can redistribute it and/or modify it under the
// terms of version 3 of the GNU General Public License as published by the
// Free Software Foundation.
//
// For the full text of the license please see COPYING or
// visit http://opensource.org/licenses/GPL-3.0
//
// Please respect the MCnet academic usage guidelines. See GUIDELINES
// or visit https://www.montecarlonet.org/GUIDELINES for details.
 
#pragma once
#include <functional>
#include <string>
#include <vector>
 
namespace marley {

  class FileManager {
 
    public:

      FileManager(const FileManager&) = delete;

      FileManager(FileManager&&) = delete;

      FileManager& operator=(const FileManager&) = delete;

      FileManager& operator=(FileManager&&) = delete;

      static const FileManager& Instance();

      static std::vector<std::string> search_path_to_dir_vector(
        const std::string& search_path = FileManager::default_search_path_);

      std::string find_file(const std::string& base_name,
        const std::vector<std::string>& search_dirs) const;

      std::string find_file(const std::string& base_name,
        const std::string& search_path
        = marley::FileManager::default_search_path_) const;

      std::vector<std::string> list_all_files(
        const std::vector<std::string>& search_dirs) const;

      std::vector<std::string> list_all_files(
        const std::string& search_path
        = FileManager::default_search_path_) const;

      inline std::string marley_dir() const { return marley_dir_; }
 
    protected:

      FileManager();

      static bool dir_iterate(const std::string& dir_name,
        const std::function<bool(const std::string&, const std::string&)>& func);

      static std::string default_search_path_;

      std::string marley_dir_;
  };
 
}