container.hh

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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
// vi: set et ts=4 sw=4 sts=4:
//
// SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef DUMUX_IO_CONTAINER_HH
#define DUMUX_IO_CONTAINER_HH
 
#include <iostream>
#include <ios>
#include <iomanip>
#include <fstream>
#include <iterator>
 
#include <dune/common/exceptions.hh>
 
namespace Dumux {
 
template<typename Container>
void writeContainerToFile(const Container& v,
                          const std::string& filename,
                          int floatPrecision = 6)
{
    std::ofstream outfile(filename, std::ios::out);
    outfile << std::scientific << std::setprecision(floatPrecision);
    std::ostream_iterator<typename Container::value_type> it(outfile, "\n");
    std::copy(v.begin(),v.end(), it);
}
 
template<typename Container>
Container readStreamToContainer(std::istream& stream)
{
    Container v;
    std::istream_iterator<typename Container::value_type> it(stream);
    std::copy(it, std::istream_iterator<typename Container::value_type>(), std::back_inserter(v));
    return v;
}
 
template<typename Container>
Container readFileToContainer(const std::string& filename)
{
    std::ifstream infile(filename, std::ios::in);
    if (!infile)
        DUNE_THROW(Dune::IOError, "Could not open file: " << filename);
    return readStreamToContainer<Container>(infile);
}
 
} // end namespace Dumux
 
#endif