unleashed-firmware/scripts/fbt/fapassets.py
hedger c3ececcf96
[FL-3174] Dolphin builder in ufbt; minor ufbt/fbt improvements (#2601)
* ufbt: added "dolphin_ext" target (expects "external" subfolder in cwd with dolphin assets); cleaned up unused code
* ufbt: codestyle fixes
* scripts: fixed style according to ruff linter
* scripts: additional cleanup & codestyle fixes
* github: pass target hw code when installing local SDK with ufbt
* ufbt: added error message for missing folder in dolphin builder
* scripts: more linter fixes
* sdk: added flipper_format_stream; ufbt: support for --extra-define
* fbt: reduced amount of global defines
* scripts, fbt: rearranged imports

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2023-05-03 14:48:49 +09:00

109 lines
3.3 KiB
Python

import hashlib
import os
import struct
from typing import TypedDict
class File(TypedDict):
path: str
size: int
content_path: str
class Dir(TypedDict):
path: str
class FileBundler:
"""
u32 magic
u32 version
u32 dirs_count
u32 files_count
u32 signature_size
u8[] signature
Dirs:
u32 dir_name length
u8[] dir_name
Files:
u32 file_name length
u8[] file_name
u32 file_content_size
u8[] file_content
"""
def __init__(self, directory_path: str):
self.directory_path = directory_path
self.file_list: list[File] = []
self.directory_list: list[Dir] = []
self._gather()
def _gather(self):
for root, dirs, files in os.walk(self.directory_path):
for file_info in files:
file_path = os.path.join(root, file_info)
file_size = os.path.getsize(file_path)
self.file_list.append(
{
"path": os.path.relpath(file_path, self.directory_path),
"size": file_size,
"content_path": file_path,
}
)
for dir_info in dirs:
dir_path = os.path.join(root, dir_info)
# dir_size = sum(
# os.path.getsize(os.path.join(dir_path, f)) for f in os.listdir(dir_path)
# )
self.directory_list.append(
{
"path": os.path.relpath(dir_path, self.directory_path),
}
)
self.file_list.sort(key=lambda f: f["path"])
self.directory_list.sort(key=lambda d: d["path"])
def export(self, target_path: str):
self._md5_hash = hashlib.md5()
with open(target_path, "wb") as f:
# Write header magic and version
f.write(struct.pack("<II", 0x4F4C5A44, 0x01))
# Write dirs count
f.write(struct.pack("<I", len(self.directory_list)))
# Write files count
f.write(struct.pack("<I", len(self.file_list)))
md5_hash_size = len(self._md5_hash.digest())
# write signature size and null signature, we'll fill it in later
f.write(struct.pack("<I", md5_hash_size))
signature_offset = f.tell()
f.write(b"\x00" * md5_hash_size)
self._write_contents(f)
f.seek(signature_offset)
f.write(self._md5_hash.digest())
def _write_contents(self, f):
for dir_info in self.directory_list:
f.write(struct.pack("<I", len(dir_info["path"]) + 1))
f.write(dir_info["path"].encode("ascii") + b"\x00")
self._md5_hash.update(dir_info["path"].encode("ascii") + b"\x00")
# Write files
for file_info in self.file_list:
f.write(struct.pack("<I", len(file_info["path"]) + 1))
f.write(file_info["path"].encode("ascii") + b"\x00")
f.write(struct.pack("<I", file_info["size"]))
self._md5_hash.update(file_info["path"].encode("ascii") + b"\x00")
with open(file_info["content_path"], "rb") as content_file:
content = content_file.read()
f.write(content)
self._md5_hash.update(content)