static
FRESULT dir_find (
DIR *dj, /* Pointer to the directory object linked to the file name */
BYTE *dir /* 32-byte working buffer */
)
{
FRESULT res;
BYTE c;
res = dir_rewind(dj); /* Rewind directory object */
if (res != FR_OK) return res;
do {
res = disk_readp(dir, dj->sect, (dj->index % 16) * 32, 32) /* Read an entry */
? FR_DISK_ERR : FR_OK;
if (res != FR_OK) break;
c = dir[DIR_Name]; /* First character */
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
break;
res = dir_next(dj); /* Next entry */
} while (res == FR_OK);
return res;
}
static
FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
DIR *dj, /* Directory object to return last directory and found object */
BYTE *dir, /* 32-byte working buffer */
const char *path /* Full-path string to find a file or directory */
)
{
FRESULT res;
while (*path == ' ') path++; /* Strip leading spaces */
if (*path == '/') path++; /* Strip heading separator if exist */
dj->sclust = 0; /* Set start directory (always root dir) */
if ((BYTE)*path < ' ') { /* Null path means the root directory */
res = dir_rewind(dj);
dir[0] = 0;
} else { /* Follow path */
for (;;) {
res = create_name(dj, &path); /* Get a segment */
if (res != FR_OK) break;
res = dir_find(dj, dir); /* Find it */
if (res != FR_OK) break; /* Could not find the object */
if (dj->fn[11]) break; /* Last segment match. Function completed. */
if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow path because it is a file */
res = FR_NO_FILE; break;
}
dj->sclust = get_clust(dir); /* Follow next */
}
}
return res;
}
FRESULT pf_opendir (
DIR *dj, /* Pointer to directory object to create */
const char *path /* Pointer to the directory path */
)
{
FRESULT res;
BYTE sp[12], dir[32];
FATFS *fs = FatFs;
if (!fs) { /* Check file system */
res = FR_NOT_ENABLED;
} else {
dj->fn = sp;
res = follow_path(dj, dir, path); /* Follow the path to the directory */
if (res == FR_OK) { /* Follow completed */
if (dir[0]) { /* It is not the root dir */
if (dir[DIR_Attr] & AM_DIR) /* The object is a directory */
dj->sclust = get_clust(dir);
else /* The object is not a directory */
res = FR_NO_FILE;
}
if (res == FR_OK)
res = dir_rewind(dj); /* Rewind dir */
}
}
return res;
}
FRESULT pf_readdir (
DIR *dj, /* Pointer to the open directory object */
FILINFO *fno /* Pointer to file information to return */
)
{
FRESULT res;
BYTE sp[12], dir[32];
FATFS *fs = FatFs;
if (!fs) { /* Check file system */
res = FR_NOT_ENABLED;
} else {
dj->fn = sp;
if (!fno) {
res = dir_rewind(dj);
} else {
res = dir_read(dj, dir); /* Get current directory item */
if (res == FR_NO_FILE) res = FR_OK;
if (res == FR_OK) { /* A valid entry is found */
get_fileinfo(dj, dir, fno); /* Get the object information */
res = dir_next(dj); /* Increment read index for next */
if (res == FR_NO_FILE) res = FR_OK;
}
}
}
return res;
}
static
FRESULT dir_find (
DIR *dj, /* Pointer to the directory object linked to the file name */
BYTE *dir /* 32-byte working buffer */
)
{
FRESULT res;
BYTE c;
res = dir_rewind(dj); /* Rewind directory object */
if (res != FR_OK) return res;
do {
if ( (dj->index & 7) == 0 )
{ // Need to read data
res = disk_readp( Abuff.DirBuffer, dj->sect, (WORD)((dj->index & 8) * 32), 256) /* Read half a sector */
? FR_DISK_ERR : FR_OK;
}
else
{
res = FR_OK ;
}
if (res != FR_OK) break;
memcpy( dir, &Abuff.DirBuffer[((dj->index % 8) * 32)], 32 ) ;
c = dir[DIR_Name]; /* First character */
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
break;
res = dir_next(dj); /* Next entry */
} while (res == FR_OK);
return res;
}
FRESULT pf_readdir (
DIR *dj, /* Pointer to the open directory object */
FILINFO *fno /* Pointer to file information to return */
)
{
FRESULT res;
BYTE sp[12], dir[32];
FATFS *fs = FatFs;
if (!fs) { /* Check file system */
res = FR_NOT_ENABLED;
} else {
dj->fn = sp;
if (!fno) {
res = dir_rewind(dj);
} else {
res = dir_read(dj, dir, &fno->lfname[0]);
if (res == FR_NO_FILE) res = FR_OK;
if (res == FR_OK) { /* A valid entry is found */
get_fileinfo(dj, dir, fno); /* Get the object information */
res = dir_next2(dj); /* Increment index for next */
if (res == FR_NO_FILE) res = FR_OK;
}
}
}
if (fno->lfname[0] == '\0') strcpy(&fno->lfname[0],&fno->fname[0]);
//printf("%s %s(%d)\n",&fno->fname[0], &fno->lfname[0],strlen(&fno->lfname[0]));
return res;
}
static FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
DIR *dj, /* Directory object to return last directory and found object */
const char *path /* Full-path string to find a file or directory */
)
{
FRESULT res;
u8 *dir;
u8 t[15];
// memcpypgm2ram(t, path, 15);
while (*path == ' ') path++; /* Skip leading spaces */
if (*path == '/') path++; /* Strip heading separator */
dj->sclust = 0; /* Set start directory (always root dir) */
// memcpypgm2ram(t, path, 15);
if ((u8)*path <= ' ') { /* Null path means the root directory */
res = dir_rewind(dj);
FatFs->buf[0] = 0;
} else { /* Follow path */
for (;;) {
res = create_name(dj, &path); /* Get a segment */
if (res != FR_OK) break;
res = dir_find(dj);
if (res != FR_OK) { /* Could not find the object */
if (res == FR_NO_FILE && !*(dj->fn+11))
res = FR_NO_PATH;
break;
}
if (*(dj->fn+11)) break; /* Last segment match. Function completed. */
dir = FatFs->buf; /* There is next segment. Follow the sub directory */
if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
res = FR_NO_PATH; break;
}
dj->sclust =
#if _FS_FAT32
((u32)LD_WORD(dir+DIR_FstClusHI) << 16) |
#endif
LD_WORD(dir+DIR_FstClusLO);
}
}
return res;
}
size_t FileSystem::dir_size(fs_dir_t dir)
{
off_t off = dir_tell(dir);
size_t size = 0;
struct dirent *ent = new struct dirent;
dir_rewind(dir);
while (true) {
int res = dir_read(dir, ent);
if (res <= 0) {
break;
}
size += 1;
}
dir_seek(dir, off);
delete ent;
return size;
}
FRESULT pf_opendir (
DIR *dj, /* Pointer to directory object to create */
const char *path /* Pointer to the directory path */
)
{
FRESULT res;
BYTE sp[12], dir[32];
FATFS *fs = FatFs;
if (!fs) { /* Check file system */
res = FR_NOT_ENABLED;
} else {
fs->buf = dir;
dj->fn = sp;
res = follow_path(dj, path); /* Follow the path to the directory */
if (res == FR_OK) { /* Follow completed */
if (dir[0]) { /* It is not the root dir */
if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
dj->sclust =
#if _FS_FAT32
((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) |
#endif
LD_WORD(dir+DIR_FstClusLO);
} else { /* The object is not a directory */
res = FR_NO_PATH;
}
}
if (res == FR_OK) {
res = dir_rewind(dj); /* Rewind dir */
}
}
if (res == FR_NO_FILE) res = FR_NO_PATH;
}
return res;
}
