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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/**
* This file is included by src/gfile/gfile.c
*/
#include "ff.h"
#include "ffconf.h"
/*
* ToDo:
*
* - f_mount has to be called before the disk can be accessed
* - complete _flags2mode()
* - restructure provided diskio.c files
*/
/********************************************************
* The FAT file-system VMT
********************************************************/
static bool_t fatfsDel(const char* fname);
static bool_t fatfsExists(const char* fname);
static long int fatfsFileSize(const char* fname);
static bool_t fatfsRename(const char* oldname, const char* newname);
static bool_t fatfsOpen(GFILE* f, const char* fname);
static void fatfsClose(GFILE* f);
static int fatfsRead(GFILE* f, void* buf, int size);
static int fatfsWrite(GFILE* f, const void* buf, int size);
static bool_t fatfsSetPos(GFILE* f, long int pos);
static long int fatfsGetSize(GFILE* f);
static bool_t fatfsEOF(GFILE* f);
static const GFILEVMT FsFatFSVMT = {
GFILE_CHAINHEAD,
GFSFLG_WRITEABLE | GFSFLG_SEEKABLE,
'F',
fatfsDel,
fatfsExists,
fatfsFileSize,
fatfsRename,
fatfsOpen,
fatfsClose,
fatfsRead,
fatfsWrite,
fatfsSetPos,
fatfsGetSize,
fatfsEOF
};
#undef GFILE_CHAINHEAD
#define GFILE_CHAINHEAD &FsFatFSVMT
static void _flags2mode(GFILE* f, BYTE* mode)
{
*mode = 0;
if (f->flags & GFILEFLG_READ)
*mode |= FA_READ;
if (f->flags & GFILEFLG_WRITE)
*mode |= FA_WRITE;
if (f->flags & GFILEFLG_APPEND)
*mode |= 0; // ToDo
if (f->flags & GFILEFLG_TRUNC)
*mode |= FA_CREATE_ALWAYS;
/* ToDo - Complete */
}
static bool_t fatfsDel(const char* fname)
{
FRESULT ferr;
ferr = f_unlink( (const TCHAR*)fname );
if (ferr != FR_OK)
return FALSE;
return TRUE;
}
static bool_t fatfsExists(const char* fname)
{
FRESULT ferr;
FILINFO fno;
ferr = f_stat( (const TCHAR*)fname, &fno);
if (ferr != FR_OK)
return FALSE;
return TRUE;
}
static long int fatfsFileSize(const char* fname)
{
FRESULT ferr;
FILINFO fno;
ferr = f_stat( (const TCHAR*)fname, &fno );
if (ferr != FR_OK)
return 0;
return (long int)fno.fsize;
}
static bool_t fatfsRename(const char* oldname, const char* newname)
{
FRESULT ferr;
ferr = f_rename( (const TCHAR*)oldname, (const TCHAR*)newname );
if (ferr != FR_OK)
return FALSE;
return TRUE;
}
static bool_t fatfsOpen(GFILE* f, const char* fname)
{
FIL* fd;
BYTE mode;
FRESULT ferr;
if (!(fd = gfxAlloc(sizeof(FIL))))
return FALSE;
_flags2mode(f, &mode);
ferr = f_open(fd, fname, mode);
if (ferr != FR_OK) {
gfxFree( (FIL*)f->obj );
f->obj = 0;
return FALSE;
}
f->obj = (void*)fd;
return TRUE;
}
static void fatfsClose(GFILE* f)
{
if ((FIL*)f->obj != 0)
gfxFree( (FIL*)f->obj );
f_close( (FIL*)f->obj );
}
static int fatfsRead(GFILE* f, void* buf, int size)
{
int br;
f_read( (FIL*)f->obj, buf, size, (UINT*)&br);
return br;
}
static int fatfsWrite(GFILE* f, const void* buf, int size)
{
int wr;
f_write( (FIL*)f->obj, buf, size, (UINT*)&wr);
return wr;
}
static bool_t fatfsSetPos(GFILE* f, long int pos)
{
FRESULT ferr;
ferr = f_lseek( (FIL*)f->obj, (DWORD)pos );
if (ferr != FR_OK)
return FALSE;
return TRUE;
}
static long int fatfsGetSize(GFILE* f)
{
return (long int)f_size( (FIL*)f->obj );
}
static bool_t fatfsEOF(GFILE* f)
{
if ( f_eof( (FIL*)f->obj ) != 0)
return TRUE;
else
return FALSE;
}
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