scummvm_file.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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 LUA_SCUMMVM_FILE_H
#define LUA_SCUMMVM_FILE_H

#include "common/str.h"
#include "common/file.h"

namespace Lua {

class LuaFileProxy {
public:
    static LuaFileProxy *create(const Common::String &filename, const Common::String &mode);
public:
    virtual ~LuaFileProxy() {}
    virtual bool eof() const = 0;
    virtual size_t read(void *ptr, size_t size, size_t count) = 0;
    virtual size_t write(const char *ptr, size_t count) = 0;
};

class LuaFileConfig : public LuaFileProxy {
    friend class LuaFileProxy;
private:
    Common::String _readData;
    uint _readPos;
    Common::String _settings;

    Common::String formatDouble(double value);
    void setupConfigFile();
    Common::String getLanguage();
    void setLanguage(const Common::String &lang);
    void writeSettings();
    void updateSetting(const Common::String &setting, const Common::String &value);

    LuaFileConfig(const Common::String &filename, const Common::String &mode);
public:
    virtual ~LuaFileConfig();

    bool eof() const override { return _readPos >= _readData.size(); }
    size_t read(void *ptr, size_t size, size_t count) override;
    size_t write(const char *ptr, size_t count) override;
};

class LuaFileRead : public LuaFileProxy {
private:
    Common::File _file;
    int32 _size;
public:
    LuaFileRead(const Common::Path &filename, const Common::String &mode);
public:
    virtual ~LuaFileRead() {}

    bool eof() const override;
    size_t read(void *ptr, size_t size, size_t count) override;
    size_t write(const char *ptr, size_t count) override;
};

} // End of namespace Lua

#endif