/*************************************************************************/
/*  cp_file_access_wrapper.h                                             */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
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/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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/*************************************************************************/
#ifndef CP_FILE_ACCESS_WRAPPER_H
#define CP_FILE_ACCESS_WRAPPER_H

#include "cp_config.h"

class CPFileAccessWrapper {
public:
	enum ModeFlags {

		READ = 1,
		WRITE = 2,
		READ_WRITE = 3,
	};

	enum Error {

		OK,
		ERROR_FILE_NOT_FOUND,
		ERROR_FILE_BAD_DRIVE,
		ERROR_FILE_BAD_PATH,
		ERROR_FILE_NO_PERMISSION,
		ERROR_ALREADY_IN_USE,
		ERROR_INVALID_PARAMETERS,
		ERROR_OPENING_FILE,
		ERROR_READING_FILE,
		ERROR_WRITING_FILE
	};

	virtual Error open(const char *p_filename, int p_mode_flags) = 0;
	virtual void close() = 0;

	virtual void seek(uint32_t p_position) = 0;
	virtual void seek_end() = 0;
	virtual uint32_t get_pos() = 0;

	virtual bool eof_reached() = 0;

	virtual uint8_t get_byte() = 0;
	virtual void get_byte_array(uint8_t *p_dest, int p_elements) = 0;
	virtual void get_word_array(uint16_t *p_dest, int p_elements) = 0;

	virtual uint16_t get_word() = 0;
	virtual uint32_t get_dword() = 0;

	// use this for files WRITTEN in _big_ endian machines (ie, amiga/mac)
	// It's not about the current CPU type but file formats.
	// this flags get reset to false (little endian) on each open
	virtual void set_endian_conversion(bool p_swap) = 0;
	virtual bool is_open() = 0;

	virtual Error get_error() = 0;

	virtual void store_byte(uint8_t p_dest) = 0;
	virtual void store_byte_array(const uint8_t *p_dest, int p_elements) = 0;

	virtual void store_word(uint16_t p_dest) = 0;
	virtual void store_dword(uint32_t p_dest) = 0;

	virtual ~CPFileAccessWrapper() {}
};

#endif