Program Listing for File config_file.h

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/*
 * Copyright © Canonical Ltd.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 or 3 as
 * published by the Free Software Foundation.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MIRAL_CONFIG_FILE_H
#define MIRAL_CONFIG_FILE_H

#include <mir/fd.h>

#include <filesystem>
#include <functional>
#include <string_view>

namespace miral
{
class MirRunner;
class FdHandle;
namespace live_config { struct OverridesList; }
}

namespace miral
{
class ConfigFile
{
public:
    using Loader = std::function<void(std::istream& istream, std::filesystem::path const& path)>;
    using OverrideLoader = std::move_only_function<void(live_config::OverridesList const&)>;

    enum class Mode
    {
        no_reloading,
        reload_on_change
    };

    ConfigFile(MirRunner& runner, std::filesystem::path file, Mode mode, Loader load_config);

    ConfigFile(
        MirRunner& runner,
        std::filesystem::path base_config,
        Mode mode,
        OverrideLoader load_config,
        std::string_view extension);

    ~ConfigFile();

private:

    class Self;
    std::shared_ptr<Self> self;
};
}

#endif //MIRAL_CONFIG_FILE_H