extmod/vfs_fat: Add .rename() method.

extmod/vfs_fat.c

@@ -89,6 +89,21 @@ STATIC mp_obj_t fat_vfs_remove(mp_obj_t vfs_in, mp_obj_t path_in) {
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_2(fat_vfs_remove_obj, fat_vfs_remove);
 
+STATIC mp_obj_t fat_vfs_rename(mp_obj_t vfs_in, mp_obj_t path_in, mp_obj_t path_out) {
+    (void)vfs_in;
+    const char *old_path = mp_obj_str_get_str(path_in);
+    const char *new_path = mp_obj_str_get_str(path_out);
+    FRESULT res = f_rename(old_path, new_path);
+    switch (res) {
+        case FR_OK:
+            return mp_const_none;
+        default:
+            nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "Error renaming file '%s' to '%s'", old_path, new_path));
+    }
+
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_3(fat_vfs_rename_obj, fat_vfs_rename);
+
 STATIC mp_obj_t fat_vfs_mkdir(mp_obj_t vfs_in, mp_obj_t path_o) {
     (void)vfs_in;
     const char *path = mp_obj_str_get_str(path_o);
@@ -111,6 +126,7 @@ STATIC const mp_rom_map_elem_t fat_vfs_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_listdir), MP_ROM_PTR(&fat_vfs_listdir_obj) },
     { MP_ROM_QSTR(MP_QSTR_mkdir), MP_ROM_PTR(&fat_vfs_mkdir_obj) },
     { MP_ROM_QSTR(MP_QSTR_remove), MP_ROM_PTR(&fat_vfs_remove_obj) },
+    { MP_ROM_QSTR(MP_QSTR_rename), MP_ROM_PTR(&fat_vfs_rename_obj) },
 };
 STATIC MP_DEFINE_CONST_DICT(fat_vfs_locals_dict, fat_vfs_locals_dict_table);
 

py/qstrdefs.h

@@ -719,6 +719,7 @@ Q(umount)
 Q(readonly)
 Q(mkfs)
 Q(listdir)
+Q(rename)
 Q(readblocks)
 Q(writeblocks)
 Q(ioctl)