/
environment.py
333 lines (282 loc) · 10.4 KB
/
environment.py
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import io
import os
import ntpath
import re
from typing import List, Callable, Dict, Union
from zipfile import ZipFile
from fsspec import AbstractFileSystem
from fsspec.implementations.local import LocalFileSystem
from .files import File, ObjectReader, SerializedFile
from .enums import FileType
from .helpers import ImportHelper
from .streams import EndianBinaryReader
reSplit = re.compile(r"(.*?([^\/\\]+?))\.split\d+")
class Environment:
files: dict
cabs: dict
path: str
local_files: List[str]
local_files_simple: List[str]
def __init__(self, *args, fs: AbstractFileSystem = None):
self.files = {}
self.cabs = {}
self.path = None
self.fs = fs or LocalFileSystem()
self.local_files = []
self.local_files_simple = []
if args:
for arg in args:
if isinstance(arg, str):
if self.fs.isfile(arg):
if ntpath.splitext(arg)[-1] in [".apk", ".zip"]:
self.load_zip_file(arg)
else:
self.path = ntpath.dirname(arg)
if reSplit.match(arg):
self.load_files([arg])
else:
self.load_file(arg)
elif self.fs.isdir(arg):
self.path = arg
self.load_folder(arg)
else:
self.path = None
self.load_file(file=arg)
if len(self.files) == 1:
self.file = list(self.files.values())[0]
if self.path == "":
self.path = os.getcwd()
def load_files(self, files: List[str]):
"""Loads all files (list) into the Environment and merges .split files for common usage."""
self.load_assets(files, lambda x: open(x, "rb"))
def load_folder(self, path: str):
"""Loads all files in the given path and its subdirs into the Environment."""
self.load_files(
[
self.fs.sep.join([root, f])
for root, dirs, files in self.fs.walk(path)
for f in files
]
)
def load(self, files: list):
"""Loads all files into the Environment."""
self.files.update(
{
ntpath.basename(f): self.load_file(self.fs.open(f, "rb"), self, f)
for f in files
if self.fs.exists(f)
}
)
def load_file(
self,
file: Union[io.IOBase, str],
parent: Union["Environment", File] = None,
name: str = None,
is_dependency: bool = False,
):
if not parent:
parent = self
if isinstance(file, str):
split_match = reSplit.match(file)
if split_match:
basepath, basename = split_match.groups()
file = []
for i in range(0, 999):
item = f"{basepath}.split{i}"
if self.fs.exists(item):
with self.fs.open(item, "rb") as f:
file.append(f.read())
elif i:
break
name = basepath
file = b"".join(file)
else:
name = file
if not os.path.exists(file):
# relative paths are in the asset directory, not the cwd
if not os.path.isabs(file):
file = os.path.join(self.path, file)
# Unity paths are case insensitive, so we need to find "Resources/Foo.asset" when the record says "resources/foo.asset"
if not os.path.exists(file):
file = ImportHelper.find_sensitive_path(self.path, file)
# nonexistent files might be packaging errors or references to Unity's global Library/
if file is None:
return
file = self.fs.open(file, "rb")
typ, reader = ImportHelper.check_file_type(file)
stream_name = (
name
if name
else getattr(
file,
"name",
str(file.__hash__()) if hasattr(file, "__hash__") else "",
)
)
if typ == FileType.ZIP:
f = self.load_zip_file(file)
else:
f = ImportHelper.parse_file(
reader, self, name=stream_name, typ=typ, is_dependency=is_dependency
)
if isinstance(f, (SerializedFile, EndianBinaryReader)):
self.register_cab(stream_name, f)
self.files[stream_name] = f
def load_zip_file(self, value):
buffer = None
if isinstance(value, str) and self.fs.exists(value):
buffer = open(value, "rb")
elif isinstance(value, (bytes, bytearray)):
buffer = io.BytesIO(value)
elif isinstance(value, (io.BufferedReader, io.BufferedIOBase)):
buffer = value
z = ZipFile(buffer)
self.load_assets(z.namelist(), lambda x: z.open(x, "r"))
z.close()
def save(self, pack="none", out_path="output"):
"""Saves all changed assets.
Mark assets as changed using `.mark_changed()`.
pack = "none" (default) or "lz4"
"""
for fname, fitem in self.files.items():
if getattr(fitem, "is_changed", False):
with open(
self.fs.sep.join([out_path, ntpath.basename(fname)]), "wb"
) as out:
out.write(fitem.save(packer=pack))
@property
def objects(self) -> List[ObjectReader]:
"""Returns a list of all objects in the Environment."""
def search(item):
ret = []
if not isinstance(item, Environment) and getattr(item, "objects", None):
# serialized file
if getattr(item, "is_dependency", False):
return []
return [val for val in item.objects.values()]
elif getattr(item, "files", None): # WebBundle and BundleFile
# bundle
for item in item.files.values():
ret.extend(search(item))
return ret
return ret
return search(self)
@property
def container(self) -> Dict[str, ObjectReader]:
"""Returns a dictionary of all objects in the Environment."""
return {
path: obj
for f in self.files.values()
if isinstance(f, File) and not f.is_dependency
for path, obj in f.container.items()
}
@property
def assets(self) -> list:
"""
Lists all assets / SerializedFiles within this environment.
"""
def gen_all_asset_files(file, ret=[]):
for f in getattr(file, "files", {}).values():
if getattr(f, "is_dependency", False):
continue
if isinstance(f, SerializedFile):
ret.append(f)
else:
gen_all_asset_files(f, ret)
return ret
return gen_all_asset_files(self)
def get(self, key: str, default=None):
return getattr(self, key, default)
def register_cab(self, name: str, item: File) -> None:
"""
Registers a cab file.
Parameters
----------
name : str
The name of the cab file.
item : File
The file to register.
"""
self.cabs[simplify_name(name)] = item
def get_cab(self, name: str) -> File:
"""
Returns the cab file with the given name.
Parameters
----------
name : str
The name of the cab file.
Returns
-------
File
The cab file.
"""
return self.cabs.get(simplify_name(name), None)
def load_assets(self, assets: List[str], open_f: Callable[[str], io.IOBase]):
"""
Load all assets from a list of files via the given open_f function.
Parameters
----------
assets : List[str]
List of files to load.
open_f : Callable[[str], io.IOBase]
Function to open the files.
The function takes a file path and returns an io.IOBase object.
"""
split_files = []
for path in assets:
splitMatch = reSplit.match(path)
if splitMatch:
basepath, basename = splitMatch.groups()
if basepath in split_files:
continue
split_files.append(basepath)
data = []
for i in range(0, 999):
item = f"{basepath}.split{i}"
if item in assets:
with open_f(item) as f:
data.append(f.read())
elif i:
break
data = b"".join(data)
path = basepath
else:
data = open_f(path).read()
self.load_file(data, name=path)
def find_file(self, name: str, is_dependency: bool = True) -> Union[File, None]:
"""
Finds a file in the environment.
Parameters
----------
name : str
The name of the file.
is_dependency : bool
Whether the file is a dependency.
Returns
-------
File | None
The file if it was found, otherwise None.
"""
simple_name = simplify_name(name)
cab = self.get_cab(simple_name)
if cab:
return cab
if len(self.local_files) == 0 and self.path:
for root, _, files in self.fs.walk(self.path):
for name in files:
self.local_files.append(self.fs.sep.join([root, name]))
if name in self.local_files:
fp = name
elif simple_name in self.local_files_simple:
fp = self.local_files[self.local_files_simple.index(simple_name)]
else:
raise FileNotFoundError(f"File {name} not found in {self.path}")
f = self.load_file(fp, name=name, is_dependency=is_dependency)
return f
def simplify_name(name: str) -> str:
"""Simplifies a name by:
- removing the extension
- removing the path
- converting to lowercase
"""
return ntpath.basename(name).lower()