/*
 * Copyright (c) 2008 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup fs
 * @{
 */ 

#ifndef FAT_FAT_DENTRY_H_
#define FAT_FAT_DENTRY_H_

#include <stdint.h>
#include <bool.h>

#define FAT_NAME_LEN		8
#define FAT_EXT_LEN		3

#define FAT_ATTR_RDONLY		(1 << 0)
#define FAT_ATTR_VOLLABEL	(1 << 3)
#define FAT_ATTR_SUBDIR		(1 << 4)

#define FAT_PAD			' ' 

#define FAT_DENTRY_UNUSED	0x00
#define FAT_DENTRY_E5_ESC	0x05
#define FAT_DENTRY_DOT		0x2e
#define FAT_DENTRY_ERASED	0xe5

typedef enum {
	FAT_DENTRY_SKIP,
	FAT_DENTRY_LAST,
	FAT_DENTRY_FREE,
	FAT_DENTRY_VALID
} fat_dentry_clsf_t;

typedef struct {
	uint8_t		name[8];
	uint8_t		ext[3];
	uint8_t		attr;
	uint8_t		reserved;
	uint8_t		ctime_fine;
	uint16_t	ctime;
	uint16_t	cdate;
	uint16_t	adate;
	union {
		uint16_t	eaidx;		/* FAT12/FAT16 */
		uint16_t	firstc_hi;	/* FAT32 */
	};
	uint16_t	mtime;
	uint16_t	mdate;
	union {
		uint16_t	firstc;		/* FAT12/FAT16 */
		uint16_t	firstc_lo;	/* FAT32 */
	};
	uint32_t	size;
} __attribute__ ((packed)) fat_dentry_t;

extern int fat_dentry_namecmp(char *, const char *);
extern bool fat_dentry_name_verify(const char *);
extern void fat_dentry_name_get(const fat_dentry_t *, char *);
extern void fat_dentry_name_set(fat_dentry_t *, const char *);
extern fat_dentry_clsf_t fat_classify_dentry(const fat_dentry_t *);

#endif

/**
 * @}
 */