circuitpython/extmod/vfs_fat_misc.c

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/*
* 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 || MICROPY_FSUSERMOUNT
#include <string.h>
#include "py/nlr.h"
#include "py/runtime.h"
#include "lib/fatfs/ff.h"
#include "lib/fatfs/diskio.h"
#include "extmod/vfs_fat_file.h"
#include "fsusermount.h"
#include "py/lexer.h"
#if _USE_LFN
STATIC char lfn[_MAX_LFN + 1]; /* Buffer to store the LFN */
#endif
// TODO: actually, the core function should be ilistdir()
mp_obj_t fat_vfs_listdir(const char *path, bool is_str_type) {
FRESULT res;
FILINFO fno;
DIR dir;
#if _USE_LFN
fno.lfname = lfn;
fno.lfsize = sizeof lfn;
#endif
res = f_opendir(&dir, path); /* Open the directory */
if (res != FR_OK) {
// TODO should be mp_type_FileNotFoundError
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "No such file or directory: '%s'", path));
}
mp_obj_t dir_list = mp_obj_new_list(0, NULL);
for (;;) {
res = f_readdir(&dir, &fno); /* Read a directory item */
if (res != FR_OK || fno.fname[0] == 0) break; /* Break on error or end of dir */
if (fno.fname[0] == '.' && fno.fname[1] == 0) continue; /* Ignore . entry */
if (fno.fname[0] == '.' && fno.fname[1] == '.' && fno.fname[2] == 0) continue; /* Ignore .. entry */
#if _USE_LFN
char *fn = *fno.lfname ? fno.lfname : fno.fname;
#else
char *fn = fno.fname;
#endif
/*
if (fno.fattrib & AM_DIR) {
// dir
} else {
// file
}
*/
// make a string object for this entry
mp_obj_t entry_o;
if (is_str_type) {
entry_o = mp_obj_new_str(fn, strlen(fn), false);
} else {
entry_o = mp_obj_new_bytes((const byte*)fn, strlen(fn));
}
// add the entry to the list
mp_obj_list_append(dir_list, entry_o);
}
f_closedir(&dir);
return dir_list;
}
mp_import_stat_t fat_vfs_import_stat(const char *path) {
FILINFO fno;
#if _USE_LFN
fno.lfname = NULL;
fno.lfsize = 0;
#endif
FRESULT res = f_stat(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