unique_file.hpp

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/*
 * Copyright (C) 1998-2018 ALPS Collaboration. See COPYRIGHT.TXT
 * All rights reserved. Use is subject to license terms. See LICENSE.TXT
 * For use in publications, see ACKNOWLEDGE.TXT
 */

#ifndef ALPS_UTILITY_TEMPORARY_FILENAME_HPP
#define ALPS_UTILITY_TEMPORARY_FILENAME_HPP

#include <alps/config.hpp>
#include <string>
#include <boost/noncopyable.hpp>

namespace alps {
    namespace testing {
        class unique_file : private boost::noncopyable {
          public:
            enum action_type {
                REMOVE_AFTER, 
                KEEP_AFTER, 
                REMOVE_NOW, 
                REMOVE_AND_DISOWN 
            };

          private:
            std::string name_;
            action_type action_;
            
          public:
            explicit unique_file(const std::string& prefix, action_type action=KEEP_AFTER);

            const std::string& name() const { return name_; }

            ~unique_file();
        };


        inline std::string temporary_filename(const std::string& prefix) {
            unique_file uf(prefix,unique_file::KEEP_AFTER);
            return uf.name();
        }
            
            
    } // testing::
} // alps::
#endif // ALPS_UTILITY_TEMPORARY_FILENAME_HPP