kopia lustrzana https://github.com/micropython/micropython
178 wiersze
5.4 KiB
C
178 wiersze
5.4 KiB
C
#include <string.h>
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#include "nlr.h"
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#include "misc.h"
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#include "mpconfig.h"
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#include "qstr.h"
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#include "obj.h"
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#include "systick.h"
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#include "rng.h"
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#include "storage.h"
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#include "ff.h"
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#include "modos.h"
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#if _USE_LFN
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static char lfn[_MAX_LFN + 1]; /* Buffer to store the LFN */
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#endif
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STATIC mp_obj_t os_listdir(uint n_args, const mp_obj_t *args) {
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const mp_obj_type_t *local_str_type = &mp_type_str;
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const char *path;
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if (n_args == 1) {
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if (mp_obj_get_type(args[0]) == &mp_type_bytes) {
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local_str_type = &mp_type_bytes;
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}
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path = mp_obj_str_get_str(args[0]);
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} else {
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path = "0:";
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}
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FRESULT res;
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FILINFO fno;
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DIR dir;
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#if _USE_LFN
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fno.lfname = lfn;
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fno.lfsize = sizeof lfn;
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#endif
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res = f_opendir(&dir, path); /* Open the directory */
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if (res != FR_OK) {
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// TODO should be mp_type_FileNotFoundError
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "No such file or directory: '%s'", path));
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}
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mp_obj_t dir_list = mp_obj_new_list(0, NULL);
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uint path_len = strlen(path);
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if (path[path_len - 1] == '/') {
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path_len--;
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}
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for (;;) {
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res = f_readdir(&dir, &fno); /* Read a directory item */
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if (res != FR_OK || fno.fname[0] == 0) break; /* Break on error or end of dir */
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if (fno.fname[0] == '.' && fno.fname[1] == 0) continue; /* Ignore . entry */
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if (fno.fname[0] == '.' && fno.fname[1] == '.' && fno.fname[2] == 0) continue; /* Ignore .. entry */
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#if _USE_LFN
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char *fn = *fno.lfname ? fno.lfname : fno.fname;
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#else
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char *fn = fno.fname;
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#endif
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if (fno.fattrib & AM_DIR) { /* It is a directory */
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} else { /* It is a file. */
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}
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// make a string object for this entry
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byte *data;
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uint fn_len = strlen(fn);
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mp_obj_t entry_o = mp_obj_str_builder_start(local_str_type, path_len + 1 + fn_len, &data);
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memcpy(data, path, path_len);
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data[path_len] = '/';
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memcpy(data + path_len + 1, fn, fn_len);
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// add the entry to the list
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mp_obj_list_append(dir_list, mp_obj_str_builder_end(entry_o));
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}
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f_closedir(&dir);
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return dir_list;
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}
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MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(os_listdir_obj, 0, 1, os_listdir);
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STATIC mp_obj_t os_mkdir(mp_obj_t path_o) {
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const char *path = mp_obj_str_get_str(path_o);
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FRESULT res = f_mkdir(path);
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switch (res) {
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case FR_OK:
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return mp_const_none;
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case FR_EXIST:
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// TODO should be FileExistsError
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "File exists: '%s'", path));
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default:
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "Error creating directory '%s'", path));
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}
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}
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MP_DEFINE_CONST_FUN_OBJ_1(os_mkdir_obj, os_mkdir);
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STATIC mp_obj_t os_remove(mp_obj_t path_o) {
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const char *path = mp_obj_str_get_str(path_o);
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// TODO check that path is actually a file before trying to unlink it
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FRESULT res = f_unlink(path);
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switch (res) {
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case FR_OK:
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return mp_const_none;
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default:
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "Error removing file '%s'", path));
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}
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}
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MP_DEFINE_CONST_FUN_OBJ_1(os_remove_obj, os_remove);
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STATIC mp_obj_t os_rmdir(mp_obj_t path_o) {
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const char *path = mp_obj_str_get_str(path_o);
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// TODO check that path is actually a directory before trying to unlink it
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FRESULT res = f_unlink(path);
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switch (res) {
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case FR_OK:
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return mp_const_none;
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default:
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "Error removing directory '%s'", path));
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}
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}
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MP_DEFINE_CONST_FUN_OBJ_1(os_rmdir_obj, os_rmdir);
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STATIC mp_obj_t os_sync(void) {
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storage_flush();
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_0(os_sync_obj, os_sync);
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STATIC mp_obj_t os_urandom(mp_obj_t num) {
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machine_int_t n = mp_obj_get_int(num);
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byte *data;
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mp_obj_t o = mp_obj_str_builder_start(&mp_type_bytes, n, &data);
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for (int i = 0; i < n; i++) {
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data[i] = rng_get();
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}
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return mp_obj_str_builder_end(o);
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}
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MP_DEFINE_CONST_FUN_OBJ_1(os_urandom_obj, os_urandom);
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STATIC const mp_map_elem_t os_module_globals_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_os) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_listdir), (mp_obj_t)&os_listdir_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_mkdir), (mp_obj_t)&os_mkdir_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_remove), (mp_obj_t)&os_remove_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_rmdir), (mp_obj_t)&os_rmdir_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_unlink), (mp_obj_t)&os_remove_obj }, // unlink aliases to remove
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{ MP_OBJ_NEW_QSTR(MP_QSTR_sync), (mp_obj_t)&os_sync_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_sep), MP_OBJ_NEW_QSTR(MP_QSTR__slash_) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_urandom), (mp_obj_t)&os_urandom_obj },
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};
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STATIC const mp_map_t os_module_globals = {
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.all_keys_are_qstrs = 1,
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.table_is_fixed_array = 1,
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.used = sizeof(os_module_globals_table) / sizeof(mp_map_elem_t),
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.alloc = sizeof(os_module_globals_table) / sizeof(mp_map_elem_t),
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.table = (mp_map_elem_t*)os_module_globals_table,
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};
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const mp_obj_module_t os_module = {
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.base = { &mp_type_module },
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.name = MP_QSTR_os,
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.globals = (mp_map_t*)&os_module_globals,
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};
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