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circuitpython/extmod/vfs_fat_misc.c

109 lines
3.6 KiB

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/mpconfig.h"
#if MICROPY_VFS_FAT
#include <string.h>
#include "py/runtime.h"
#include "lib/oofatfs/ff.h"
#include "extmod/vfs_fat.h"
#include "py/lexer.h"
typedef struct _mp_vfs_fat_ilistdir_it_t {
mp_obj_base_t base;
mp_fun_1_t iternext;
bool is_str;
FF_DIR dir;
} mp_vfs_fat_ilistdir_it_t;
STATIC mp_obj_t mp_vfs_fat_ilistdir_it_iternext(mp_obj_t self_in) {
mp_vfs_fat_ilistdir_it_t *self = MP_OBJ_TO_PTR(self_in);
for (;;) {
FILINFO fno;
FRESULT res = f_readdir(&self->dir, &fno);
char *fn = fno.fname;
if (res != FR_OK || fn[0] == 0) {
// stop on error or end of dir
break;
}
// Note that FatFS already filters . and .., so we don't need to
// make 3-tuple with info about this entry
mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(3, NULL));
if (self->is_str) {
t->items[0] = mp_obj_new_str(fn, strlen(fn), false);
} else {
t->items[0] = mp_obj_new_bytes((const byte*)fn, strlen(fn));
}
if (fno.fattrib & AM_DIR) {
// dir
t->items[1] = MP_OBJ_NEW_SMALL_INT(MP_S_IFDIR);
} else {
// file
t->items[1] = MP_OBJ_NEW_SMALL_INT(MP_S_IFREG);
}
t->items[2] = MP_OBJ_NEW_SMALL_INT(0); // no inode number
return MP_OBJ_FROM_PTR(t);
}
// ignore error because we may be closing a second time
f_closedir(&self->dir);
return MP_OBJ_STOP_ITERATION;
}
mp_obj_t fat_vfs_ilistdir2(fs_user_mount_t *vfs, const char *path, bool is_str_type) {
mp_vfs_fat_ilistdir_it_t *iter = m_new_obj(mp_vfs_fat_ilistdir_it_t);
iter->base.type = &mp_type_polymorph_iter;
iter->iternext = mp_vfs_fat_ilistdir_it_iternext;
iter->is_str = is_str_type;
FRESULT res = f_opendir(&vfs->fatfs, &iter->dir, path);
if (res != FR_OK) {
mp_raise_OSError(fresult_to_errno_table[res]);
}
return MP_OBJ_FROM_PTR(iter);
}
mp_import_stat_t fat_vfs_import_stat(fs_user_mount_t *vfs, const char *path) {
FILINFO fno;
assert(vfs != NULL);
FRESULT res = f_stat(&vfs->fatfs, path, &fno);
if (res == FR_OK) {
if ((fno.fattrib & AM_DIR) != 0) {
return MP_IMPORT_STAT_DIR;
} else {
return MP_IMPORT_STAT_FILE;
}
}
return MP_IMPORT_STAT_NO_EXIST;
}
#endif // MICROPY_VFS_FAT