resource_manager.h

/**
 * @file resource_manager.h
 * @brief Embedded resource management
 *
 * @section License
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 *
 * Copyright (C) 2010-2024 Oryx Embedded SARL. All rights reserved.
 *
 * 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 2
 * 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, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * @author Oryx Embedded SARL (www.oryx-embedded.com)
 * @version 2.4.4
 **/

#ifndef _RESOURCE_MANAGER_H
#define _RESOURCE_MANAGER_H

//Dependencies
#include "compiler_port.h"
#include "error.h"

//C++ guard
#ifdef __cplusplus
extern "C" {
#endif


/**
 * @brief Resource type
 **/

typedef enum
{
   RES_TYPE_DIR  = 1,
   RES_TYPE_FILE = 2
} ResType;


//CC-RX, CodeWarrior or Win32 compiler?
#if defined(__CCRX__)
   #pragma pack
#elif defined(__CWCC__) || defined(_WIN32)
   #pragma pack(push, 1)
#endif


/**
 * @brief Resource entry
 **/

typedef __packed_struct
{
   char_t type;
   uint32_t dataStart;
   uint32_t dataLength;
   uint8_t nameLength;
   char_t name[];
} ResEntry;


/**
 * @brief Root entry
 **/

typedef __packed_struct
{
   char_t type;
   uint32_t dataStart;
   uint32_t dataLength;
   uint8_t nameLength;
} ResRootEntry;


/**
 * @brief Resource header
 **/

typedef __packed_struct
{
   uint32_t totalSize;
   ResRootEntry rootEntry;
} ResHeader;


//CC-RX, CodeWarrior or Win32 compiler?
#if defined(__CCRX__)
   #pragma unpack
#elif defined(__CWCC__) || defined(_WIN32)
   #pragma pack(pop)
#endif


typedef struct
{
   uint_t type;
   uint_t volume;
   uint32_t dataStart;
   uint32_t dataLength;
   uint8_t nameLength;
   char_t name[];
} DirEntry;


//Resource management
error_t resGetData(const char_t *path, const uint8_t **data, size_t *length);

error_t resSearchFile(const char_t *path, DirEntry *dirEntry);

//error_t resOpenDirectory(Directory *directory, const DirEntry *entry);
//error_t resReadDirectory(Directory *directory, DirEntry *entry);

#if 0
typedef struct
{
   uint_t mode;
   uint32_t start;
   uint32_t size;
   uint32_t offset;
} FsFile;

error_t resOpenFile(FsFile *file, const DirEntry *dirEntry, uint_t mode);
error_t resSeekFile(FsFile *file, uint32_t *position);
uint_t resReadFile(FsFile *file, void *data, size_t length);
#endif

//C++ guard
#ifdef __cplusplus
}
#endif

#endif