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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.io/license.html
*/
/********************************************************
* The FATFS file-system
********************************************************/
#include "../../gfx.h"
#if GFX_USE_GFILE && GFILE_NEED_FATFS
#include "gfile_fs.h"
#include "gfile_fatfs_wrapper.h"
/********************************************************
* The FAT file-system VMT
********************************************************/
static gBool fatfsDel(const char* fname);
static gBool fatfsExists(const char* fname);
static gFileSize fatfsFileSize(const char* fname);
static gBool fatfsRename(const char* oldname, const char* newname);
static gBool 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 gBool fatfsSetPos(GFILE* f, gFileSize pos);
static gFileSize fatfsGetSize(GFILE* f);
static gBool fatfsEOF(GFILE* f);
static gBool fatfsMount(const char* drive);
static gBool fatfsUnmount(const char* drive);
static gBool fatfsSync(GFILE* f);
#if GFILE_NEED_FILELISTS && _FS_MINIMIZE <= 1
static gfileList *fatfsFlOpen(const char *path, gBool dirs);
static const char *fatfsFlRead(gfileList *pfl);
static void fatfsFlClose(gfileList *pfl);
#endif
const GFILEVMT FsFatFSVMT = {
GFSFLG_WRITEABLE | GFSFLG_SEEKABLE,
'F',
fatfsDel,
fatfsExists,
fatfsFileSize,
fatfsRename,
fatfsOpen,
fatfsClose,
fatfsRead,
fatfsWrite,
fatfsSetPos,
fatfsGetSize,
fatfsEOF,
fatfsMount, fatfsUnmount, fatfsSync,
#if GFILE_NEED_FILELISTS
#if _FS_MINIMIZE <= 1
fatfsFlOpen, fatfsFlRead, fatfsFlClose
#else
0, 0, 0
#endif
#endif
};
// Our directory list structure
typedef struct fatfsList {
gfileList fl; // This must be the first element.
DIR dir;
FILINFO fno;
#if _USE_LFN
char lfn[_MAX_LFN + 1]; /* Buffer to store the LFN */
#endif
} fatfsList;
// optimize these later on. Use an array to have multiple FatFS
static gBool fatfs_mounted = gFalse;
static FATFS fatfs_fs;
static BYTE fatfs_flags2mode(GFILE* f)
{
BYTE mode = 0;
if (f->flags & GFILEFLG_READ)
mode |= FA_READ;
if (f->flags & GFILEFLG_WRITE)
mode |= FA_WRITE;
if (f->flags & GFILEFLG_APPEND)
mode |= FA_OPEN_APPEND;
if (f->flags & GFILEFLG_TRUNC)
mode |= FA_CREATE_ALWAYS;
/* ToDo - Complete */
return mode;
}
static gBool fatfsDel(const char* fname)
{
FRESULT ferr;
ferr = f_unlink( (const TCHAR*)fname );
if (ferr != FR_OK)
return gFalse;
return gTrue;
}
static gBool fatfsExists(const char* fname)
{
FRESULT ferr;
FILINFO fno;
ferr = f_stat( (const TCHAR*)fname, &fno);
if (ferr != FR_OK)
return gFalse;
return gTrue;
}
static gFileSize fatfsFileSize(const char* fname)
{
FRESULT ferr;
FILINFO fno;
ferr = f_stat( (const TCHAR*)fname, &fno );
if (ferr != FR_OK)
return 0;
return (gFileSize)fno.fsize;
}
static gBool fatfsRename(const char* oldname, const char* newname)
{
FRESULT ferr;
ferr = f_rename( (const TCHAR*)oldname, (const TCHAR*)newname );
if (ferr != FR_OK)
return gFalse;
return gTrue;
}
static gBool fatfsOpen(GFILE* f, const char* fname)
{
FIL* fd;
#if !GFILE_NEED_NOAUTOMOUNT
if (!fatfs_mounted && !fatfsMount(""))
return gFalse;
#endif
if (!(fd = gfxAlloc(sizeof(FIL))))
return gFalse;
if (f_open(fd, fname, fatfs_flags2mode(f)) != FR_OK) {
gfxFree(fd);
f->obj = 0;
return gFalse;
}
f->obj = (void*)fd;
#if !GFILE_NEED_NOAUTOSYNC
// no need to sync when not opening for write
if (f->flags & GFILEFLG_WRITE) {
f_sync( (FIL*)f->obj );
}
#endif
return gTrue;
}
static void fatfsClose(GFILE* f)
{
if ((FIL*)f->obj != 0) {
f_close( (FIL*)f->obj );
gfxFree( (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);
#if !GFILE_NEED_NOAUTOSYNC
f_sync( (FIL*)f->obj );
#endif
return wr;
}
static gBool fatfsSetPos(GFILE* f, gFileSize pos)
{
FRESULT ferr;
ferr = f_lseek( (FIL*)f->obj, (DWORD)pos );
if (ferr != FR_OK)
return gFalse;
return gTrue;
}
static gFileSize fatfsGetSize(GFILE* f)
{
return (gFileSize)f_size( (FIL*)f->obj );
}
static gBool fatfsEOF(GFILE* f)
{
if ( f_eof( (FIL*)f->obj ) != 0)
return gTrue;
else
return gFalse;
}
static gBool fatfsMount(const char* drive)
{
FRESULT ferr;
if (!fatfs_mounted) {
ferr = f_mount(&fatfs_fs, drive, 1);
if (ferr != FR_OK)
return gFalse;
fatfs_mounted = gTrue;
return gTrue;
}
return gFalse;
}
static gBool fatfsUnmount(const char* drive)
{
(void)drive;
if (fatfs_mounted) {
// FatFS does not provide an unmount routine.
fatfs_mounted = gFalse;
return gTrue;
}
return gFalse;
}
static gBool fatfsSync(GFILE *f)
{
FRESULT ferr;
ferr = f_sync( (FIL*)f->obj );
if (ferr != FR_OK) {
return gFalse;
}
return gTrue;
}
#if GFILE_NEED_FILELISTS && _FS_MINIMIZE <= 1
static gfileList *fatfsFlOpen(const char *path, gBool dirs) {
fatfsList *p;
(void) dirs;
if (!(p = gfxAlloc(sizeof(fatfsList))))
return 0;
if (f_opendir(&p->dir, path) != FR_OK) {
gfxFree(p);
return 0;
}
return &p->fl;
}
static const char *fatfsFlRead(gfileList *pfl) {
#define ffl ((fatfsList *)pfl)
while(1) {
#if _USE_LFN
ffl->fno.lfname = ffl->lfn;
ffl->fno.lfsize = sizeof(ffl->lfn);
#endif
// Read the next entry
if (f_readdir(&ffl->dir, &ffl->fno) != FR_OK || !ffl->fno.fname[0])
return 0;
/* Ignore dot entries */
if (ffl->fno.fname[0] == '.') continue;
/* Is it a directory */
if (ffl->fl.dirs) {
if ((ffl->fno.fattrib & AM_DIR))
break;
} else {
if (!(ffl->fno.fattrib & AM_DIR))
break;
}
}
#if _USE_LFN
return ffl->fno.lfname[0] ? ffl->fno.lfname : ffl->fno.fname;
#else
return ffl->fno.fname;
#endif
#undef ffl
}
static void fatfsFlClose(gfileList *pfl) {
f_closedir(&((fatfsList *)pfl)->dir);
gfxFree(pfl);
}
#endif
#endif //GFX_USE_GFILE && GFILE_NEED_FATFS
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