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scrapper.py
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scrapper.py
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import argparse
from collections import OrderedDict
import glob
import os
import shutil
from construct import *
from tqdm import tqdm
setglobalstringencoding(None)
ScrapFile = Struct(
"path" / PascalString(Int32ul),
"size" / Int32ul,
"offset" / Int32ul,
"data" / OnDemandPointer(this.offset, Bytes(this.size)),
)
DummyFile = Struct("path" / PascalString(Int32ul), "size" / Int32ul, "offset" / Int32ul)
PackedHeader = Struct(
Const(b"BFPK"), Const(b"\0\0\0\0"), "files" / PrefixedArray(Int32ul, ScrapFile)
)
DummyHeader = Struct(
Const(b"BFPK"), Const(b"\0\0\0\0"), "files" / PrefixedArray(Int32ul, DummyFile)
)
parser = argparse.ArgumentParser(description="Unpack and Repack .packed files")
parser.add_argument(
"-u", "--unpack", action="store_true", help="unpack file to 'extracted' directory"
)
parser.add_argument(
"-r", "--repack", action="store_true", help="repack file from 'extracted' directory"
)
parser.add_argument(
"--reset", action="store_true", default=False, help="restore backup"
)
parser.add_argument(
"scrap_dir",
metavar="Scrapland Directory",
type=str,
default=".",
help="Scrapland installation directory",
)
options = parser.parse_args()
scrap_dir = os.path.abspath(options.scrap_dir)
if options.reset:
print("Restoring Backups and removing extracted folder...")
for packed_file in glob.glob(os.path.join(scrap_dir, "*.packed.bak")):
outfile = os.path.basename(packed_file)
orig_filename = outfile[:-4]
if os.path.isfile(outfile):
print("deleting", orig_filename)
os.remove(orig_filename)
print("moving", outfile, "->", orig_filename)
shutil.move(outfile, orig_filename)
target_folder = os.path.join("extracted", os.path.basename(orig_filename))
print("deleting", target_folder)
shutil.rmtree(target_folder)
if os.path.isdir("extracted"):
input("Press enter to remove rest of extracted folder")
shutil.rmtree("extracted")
exit("Done!")
if not (options.unpack or options.repack):
parser.print_help()
exit()
pstatus = ""
if options.unpack:
if os.path.isdir("extracted"):
print("Removing extracted folder")
shutil.rmtree("extracted")
for packed_file in glob.glob(os.path.join(scrap_dir, "*.packed")):
os.chdir(scrap_dir)
BN = os.path.basename(packed_file)
target_folder = os.path.join("extracted", os.path.basename(packed_file))
os.makedirs(target_folder, exist_ok=True)
os.chdir(target_folder)
print("Unpacking {}".format(os.path.basename(packed_file)))
with open(packed_file, "rb") as pkfile:
data = PackedHeader.parse_stream(pkfile)
print("Offset:", hex(pkfile.tell()))
for file in tqdm(data.files, ascii=True):
folder, filename = os.path.split(file.path)
if folder:
os.makedirs(folder, exist_ok=True)
with open(file.path, "wb") as outfile:
outfile.write(file.data())
print("\r" + " " * len(pstatus) + "\r", end="", flush=True)
os.chdir(scrap_dir)
if options.unpack and options.repack:
input(
"Press enter to rebuild *.packed files from folders in 'extracted' dir..."
) # noqa
pass
def file_gen(files, offset=0):
for real_path, size, path in files:
file = dict(path=path, offset=offset, size=size)
yield file
offset += file["size"]
def make_header(files, offset=0):
files_list = list(file_gen(files, offset))
return DummyHeader.build(dict(files=files_list))
if options.repack:
for folder in glob.glob(os.path.join(scrap_dir, "extracted", "*.packed")):
data = []
filename = os.path.join(scrap_dir, os.path.basename(folder))
for root, folders, files in os.walk(folder):
for file in sorted(files):
file = os.path.join(root, file)
rel_path = bytes(
file.replace(folder, "").replace("\\", "/").lstrip("/"),
"windows-1252",
)
size = os.stat(file).st_size
data.append((file, size, rel_path))
print("Found {} files for {}".format(len(data), filename))
offset = len(make_header(data))
print("Writing", filename)
header = make_header(data, offset)
with open(filename, "wb") as outfile:
outfile.write(header)
for file, size, rel_path in tqdm(data, ascii=True):
outfile.write(open(file, "rb").read())
print("Done!")