mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
52 lines
2.2 KiB
Python
52 lines
2.2 KiB
Python
# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
import os
|
|
import sys
|
|
from typing import Tuple
|
|
|
|
from fatfsgen_utils.boot_sector import BootSector
|
|
from fatfsgen_utils.cluster import Cluster
|
|
from fatfsgen_utils.entry import Entry
|
|
from fatfsgen_utils.fat import FAT
|
|
from fatfsgen_utils.fatfs_state import BootSectorState
|
|
from fatfsgen_utils.utils import PAD_CHAR, FATDefaults, read_filesystem
|
|
|
|
|
|
def get_address_and_name(obj_: dict, state_: BootSectorState) -> Tuple[int, str]:
|
|
cluster_id_ = obj_['DIR_FstClusLO']
|
|
obj_ext_ = obj_['DIR_Name_ext'].rstrip(chr(PAD_CHAR))
|
|
ext_ = f'.{obj_ext_}' if len(obj_ext_) > 0 else ''
|
|
obj_name_ = obj_['DIR_Name'].rstrip(chr(PAD_CHAR)) + ext_
|
|
data_address_ = Cluster.compute_cluster_data_address(state_, cluster_id_)
|
|
return data_address_, obj_name_
|
|
|
|
|
|
def traverse_folder_tree(directory_address: int, name: str, state_: BootSectorState) -> None:
|
|
if name not in ('.', '..'):
|
|
os.makedirs(name)
|
|
for i in range(state_.sector_size // FATDefaults.ENTRY_SIZE):
|
|
obj_address_ = directory_address + FATDefaults.ENTRY_SIZE * i
|
|
obj_ = Entry.ENTRY_FORMAT_SHORT_NAME.parse(
|
|
fs[obj_address_: obj_address_ + FATDefaults.ENTRY_SIZE])
|
|
if obj_['DIR_Attr'] == Entry.ATTR_ARCHIVE:
|
|
data_address_, obj_name_ = get_address_and_name(obj_, state_)
|
|
content_ = fs[data_address_: data_address_ + state_.sector_size].rstrip(chr(0x00).encode())
|
|
with open(os.path.join(name, obj_name_), 'wb') as new_file:
|
|
new_file.write(content_)
|
|
elif obj_['DIR_Attr'] == Entry.ATTR_DIRECTORY:
|
|
data_address_, obj_name_ = get_address_and_name(obj_, state_)
|
|
if obj_name_ in ('.', '..'):
|
|
continue
|
|
traverse_folder_tree(data_address_, os.path.join(name, obj_name_), state_=state_)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
fs = read_filesystem(sys.argv[1])
|
|
parser = BootSector()
|
|
parser.parse_boot_sector(fs)
|
|
fat = FAT(parser.boot_sector_state, init_=False)
|
|
|
|
traverse_folder_tree(parser.boot_sector_state.root_directory_start,
|
|
parser.boot_sector_state.volume_label.rstrip(chr(PAD_CHAR)),
|
|
parser.boot_sector_state)
|