mirror of
https://github.com/Virtual-World-RE/NeoGF.git
synced 2024-11-15 11:45:33 +01:00
428 lines
22 KiB
Python
428 lines
22 KiB
Python
#!/usr/bin/env python3
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from datetime import datetime
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import logging
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from math import ceil
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import os
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from pathlib import Path
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import re
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import time
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__version__ = "0.0.4"
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__author__ = "rigodron, algoflash, GGLinnk"
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__license__ = "MIT"
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__status__ = "developpement"
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class AfsInvalidFileLenError(Exception): pass
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class FilenameResolver:
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__sys_path = None
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__names_tuples = None
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__resolve_buffer = ""
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__separator = '/'
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def __init__(self, sys_path:Path):
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self.__sys_path = sys_path
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self.__names_tuples = {}
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self.__load()
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def __load(self):
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if (self.__sys_path / "filename_resolver.txt").is_file():
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self.__resolve_buffer = (self.__sys_path / "filename_resolver.txt").read_text()
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for line in self.__resolve_buffer.split('\n'):
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name_tuple = line.split(self.__separator)
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self.__names_tuples[name_tuple[1]] = int(name_tuple[0])
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def save(self):
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if len(self.__resolve_buffer) > 0:
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logging.info("Writting filename_resolver.txt")
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(self.__sys_path / "filename_resolver.txt").write_text(self.__resolve_buffer[:-1])
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# resolve generate a unique filename when unpacking
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def resolve_new(self, fileindex:int, filename:str):
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if filename in self.__names_tuples:
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if self.__names_tuples[filename] == fileindex:
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return filename
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i = 1
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new_filename = f"{Path(filename).stem} ({i}){Path(filename).suffix}"
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while new_filename in self.__names_tuples:
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if self.__names_tuples[new_filename] == fileindex:
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return new_filename
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i+=1
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new_filename = f"{Path(filename).stem} ({i}){Path(filename).suffix}"
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self.__names_tuples[new_filename] = fileindex
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self.__resolve_buffer += f"{fileindex}{self.__separator}{new_filename}\n"
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return new_filename
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self.__names_tuples[filename] = fileindex
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return filename
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# return generated filename if it exist else filename
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def resolve_from_index(self, fileindex:int, filename:str):
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for filename_key, fileindex_value in self.__names_tuples.items():
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if fileindex_value == fileindex:
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return filename_key
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return filename
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# http://wiki.xentax.com/index.php/GRAF:AFS_AFS
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class Afs:
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MAGIC_00 = b"AFS\x00"
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MAGIC_20 = b"AFS\x20"
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ALIGN = 0x800
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HEADER_LEN = 8
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FILENAMEBLOCK_ENTRY_LEN = 0x30
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__file_count = None
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__filenamedirectory_offset_offset = None
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__filenamedirectory_offset = None
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__filenamedirectory_len = None
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__filenamedirectory = None
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__tableofcontent = None
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def __get_magic(self):
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return bytes(self.__tableofcontent[0:4])
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def __get_file_count(self):
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return int.from_bytes(self.__tableofcontent[4:8], "little")
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def __get_filenamedirectory_offset(self):
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return int.from_bytes(self.__tableofcontent[self.__filenamedirectory_offset_offset:self.__filenamedirectory_offset_offset+4], "little")
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def __get_filenamedirectory_len(self):
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return int.from_bytes(self.__tableofcontent[self.__filenamedirectory_offset_offset+4:self.__filenamedirectory_offset_offset+8], "little")
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def __get_file_offset(self, fileindex:int):
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return int.from_bytes(self.__tableofcontent[Afs.HEADER_LEN+fileindex*8:Afs.HEADER_LEN+fileindex*8+4], "little")
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def __get_file_len(self, fileindex:int):
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return int.from_bytes(self.__tableofcontent[Afs.HEADER_LEN+fileindex*8+4:Afs.HEADER_LEN+fileindex*8+8], "little")
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def __get_file_name(self, fileindex:int):
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return self.__filenamedirectory[fileindex*Afs.FILENAMEBLOCK_ENTRY_LEN:fileindex*Afs.FILENAMEBLOCK_ENTRY_LEN+32].split(b"\x00")[0].decode("utf-8")
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def __get_file_fdlast(self, fileindex:int):
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return int.from_bytes(self.__filenamedirectory[fileindex*Afs.FILENAMEBLOCK_ENTRY_LEN+44:fileindex*Afs.FILENAMEBLOCK_ENTRY_LEN+48], "little")
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def __get_mtime(self, fileindex:int):
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mtime_data = self.__filenamedirectory[fileindex*Afs.FILENAMEBLOCK_ENTRY_LEN+32:fileindex*Afs.FILENAMEBLOCK_ENTRY_LEN+44]
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year = int.from_bytes(mtime_data[0:2], "little")
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month = int.from_bytes(mtime_data[2:4], "little")
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day = int.from_bytes(mtime_data[4:6], "little")
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hour = int.from_bytes(mtime_data[6:8], "little")
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minute = int.from_bytes(mtime_data[8:10], "little")
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second = int.from_bytes(mtime_data[10:12], "little")
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return time.mktime(datetime(year=year, month=month, day=day, hour=hour, minute=minute, second=second).timetuple())
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def __patch_file_len(self, fileindex:int, file_len:int):
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# Patch file_len in the FD
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if self.__filenamedirectory:
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if self.__get_file_len(fileindex) == self.__filenamedirectory[fileindex*Afs.FILENAMEBLOCK_ENTRY_LEN+44:fileindex*Afs.FILENAMEBLOCK_ENTRY_LEN+48]:
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self.__filenamedirectory[fileindex*Afs.FILENAMEBLOCK_ENTRY_LEN+44:fileindex*Afs.FILENAMEBLOCK_ENTRY_LEN+48] = file_len.to_bytes(4, "little")
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# Patch file_len in the TOC
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self.__tableofcontent[Afs.HEADER_LEN+fileindex*8+4:Afs.HEADER_LEN+fileindex*8+8] = file_len.to_bytes(4, "little")
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def __patch_mtime(self, fileindex:int, mtime):
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mtime = datetime.fromtimestamp(mtime)
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self.__filenamedirectory[Afs.FILENAMEBLOCK_ENTRY_LEN*fileindex+32:Afs.FILENAMEBLOCK_ENTRY_LEN*fileindex+44] = \
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mtime.year.to_bytes(2,"little")+ \
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mtime.month.to_bytes(2,"little")+ \
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mtime.day.to_bytes(2,"little")+ \
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mtime.hour.to_bytes(2,"little")+ \
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mtime.minute.to_bytes(2,"little")+\
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mtime.second.to_bytes(2,"little")
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def __pad(self, data:bytes):
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if len(data) % self.ALIGN != 0:
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data += b"\x00" * (self.ALIGN - (len(data) % self.ALIGN))
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return data
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def __clean_filenamedirectory(self):
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self.__filenamedirectory = None
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self.__filenamedirectory_offset = None
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self.__filenamedirectory_len = None
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def __loadsys_from_afs(self, afs_file, afs_len:int):
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self.__tableofcontent = afs_file.read(Afs.HEADER_LEN)
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if self.__get_magic() not in [Afs.MAGIC_00, Afs.MAGIC_20]:
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raise Exception("Invalid AFS magic number.")
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self.__file_count = self.__get_file_count()
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self.__tableofcontent += afs_file.read(self.__file_count*8)
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tableofcontent_len = len(self.__tableofcontent)
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offset = tableofcontent_len
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tmp_block = int.from_bytes(afs_file.read(4), "little")
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if tmp_block != 0:
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self.__filenamedirectory_offset_offset = offset
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self.__filenamedirectory_offset = tmp_block
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else:
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# If filenamedirectory_offset is not directly after the files offsets and lens
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# --> we search the next uint32 != 0
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offset += 4
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block_len = 0x800
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tmp_block = afs_file.read(block_len)
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while tmp_block:
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match = re.search(b"^(?:\x00{4})*(?!\x00{4})(.{4})", tmp_block) # match next uint32
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if match:
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self.__filenamedirectory_offset_offset = offset + match.start(1)
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self.__filenamedirectory_offset = int.from_bytes(match[1], "little")
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break
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offset += block_len
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tmp_block = afs_file.read(block_len)
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if self.__filenamedirectory_offset is None:
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raise Exception("Error - Empty AFS.")
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afs_file.seek(self.__filenamedirectory_offset_offset+4)
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self.__filenamedirectory_len = int.from_bytes(afs_file.read(4), "little")
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# Test if offset of filenamedirectory is valid and if number of entries match between filenamedirectory and tableofcontent
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if self.__filenamedirectory_offset + self.__filenamedirectory_len > afs_len or \
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self.__filenamedirectory_offset < self.__filenamedirectory_offset_offset or \
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(tableofcontent_len - self.HEADER_LEN) / 8 != self.__filenamedirectory_len / Afs.FILENAMEBLOCK_ENTRY_LEN:
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self.__clean_filenamedirectory()
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return False
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afs_file.seek(self.__filenamedirectory_offset)
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self.__filenamedirectory = afs_file.read(self.__filenamedirectory_len)
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# Test if filename is correct by very basic pattern matching
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pattern = re.compile(b"^(?=.{32}$)[^\x00]+\x00+$")
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for i in range(0, self.__file_count):
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if not pattern.fullmatch(self.__filenamedirectory[i*Afs.FILENAMEBLOCK_ENTRY_LEN:i*Afs.FILENAMEBLOCK_ENTRY_LEN+32]):
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self.__clean_filenamedirectory()
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return False
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afs_file.seek(tableofcontent_len)
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self.__tableofcontent += afs_file.read(self.__filenamedirectory_offset_offset+8 - tableofcontent_len)
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return True
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def __loadsys_from_folder(self, sys_path:Path):
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self.__tableofcontent = bytearray( (sys_path / "tableofcontent.bin").read_bytes() )
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self.__file_count = self.__get_file_count()
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# If there is a filenamedirectory we load it
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if (sys_path / "filenamedirectory.bin").is_file():
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self.__filenamedirectory = bytearray((sys_path / "filenamedirectory.bin").read_bytes())
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self.__filenamedirectory_offset_offset = len(self.__tableofcontent) - 8
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self.__filenamedirectory_offset = self.__get_filenamedirectory_offset()
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self.__filenamedirectory_len = self.__get_filenamedirectory_len()
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if self.__filenamedirectory_len != len(self.__filenamedirectory):
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raise Exception("Error - Tableofcontent filenamedirectory length does not match real filenamedirectory length.")
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def unpack(self, afs_path:Path, folder_path:Path):
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sys_path = folder_path / "sys"
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root_path = folder_path / "root"
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sys_path.mkdir(parents=True)
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root_path.mkdir()
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with afs_path.open("rb") as afs_file:
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if not self.__loadsys_from_afs(afs_file, afs_path.stat().st_size):
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logging.info("There is no filename directory. Creating new names and dates for files.")
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else:
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logging.debug(f"filenamedirectory_offset:0x{self.__filenamedirectory_offset:x}, filenamedirectory_len:0x{self.__filenamedirectory_len:x}.")
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logging.info("Writting sys/filenamedirectory.bin")
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(sys_path / "filenamedirectory.bin").write_bytes(self.__filenamedirectory)
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resolver = FilenameResolver(sys_path)
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logging.info("Writting sys/tableofcontent.bin")
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(sys_path / "tableofcontent.bin").write_bytes(self.__tableofcontent)
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logging.info(f"Extracting {self.__file_count} files.")
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for i in range(0, self.__file_count):
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file_offset = self.__get_file_offset(i)
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file_len = self.__get_file_len(i)
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filename = resolver.resolve_new(i, self.__get_file_name(i)) if self.__filenamedirectory else f"{i:08}"
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logging.debug(f"Writting {root_path / filename} 0x{file_offset:x}:0x{file_offset + file_len:x}")
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afs_file.seek(file_offset)
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(root_path / filename).write_bytes(afs_file.read(file_len))
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if self.__filenamedirectory:
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mtime = self.__get_mtime(i)
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os.utime(root_path / filename, (mtime, mtime))
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if self.__filenamedirectory:
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resolver.save()
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def pack(self, folder_path:Path, afs_path:Path = None):
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if afs_path == None:
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afs_path = folder_path / Path(folder_path.name).with_suffix(".afs")
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elif afs_path.suffix != ".afs":
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logging.warning("Dest file should have .afs file extension.")
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sys_path = folder_path / "sys"
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root_path = folder_path / "root"
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self.__loadsys_from_folder(sys_path)
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if self.__filenamedirectory:
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resolver = FilenameResolver(sys_path)
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offsets_map = self.__get_offsets_map()
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with afs_path.open("wb") as afs_file:
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# We update files
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for i in range(0, self.__file_count):
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file_offset = self.__get_file_offset(i)
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file_len = self.__get_file_len(i)
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filename = resolver.resolve_from_index(i, self.__get_file_name(i)) if self.__filenamedirectory else f"{i:08}"
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file_path = root_path / filename
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new_file_len = file_path.stat().st_size
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if new_file_len != file_len:
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next_offset = None
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# If no FD, we can raise AFS length without constraint
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if offsets_map.index(file_offset) + 1 < len(offsets_map):
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next_offset = offsets_map[offsets_map.index(file_offset)+1]
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if next_offset:
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if file_offset + new_file_len > next_offset:
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raise AfsInvalidFileLenError(f"File {file_path} as a new file_len (0x{new_file_len:x}) > next file offset (0x{next_offset:x}). "\
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"This means that we have to rebuild the AFS using -r and changing offset of all next files and this could lead to bugs if the main dol use AFS relative file offsets.")
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self.__patch_file_len(i, new_file_len)
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# If there is a filenamedirectory we update mtime :
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if self.__filenamedirectory:
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self.__patch_mtime(i, round(file_path.stat().st_mtime))
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logging.debug(f"Packing {file_path} 0x{file_offset:x}:0x{file_offset+new_file_len:x} in AFS.")
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afs_file.seek(file_offset)
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afs_file.write(self.__pad(file_path.read_bytes()))
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if self.__filenamedirectory:
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afs_file.seek(self.__filenamedirectory_offset)
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afs_file.write(self.__pad(self.__filenamedirectory))
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logging.debug(f"Packing {sys_path}/tableofcontent.bin at the beginning of the AFS.")
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afs_file.seek(0)
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afs_file.write(self.__tableofcontent)
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def rebuild(self, folder_path:Path):
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raise Exception("Not implemented yet")
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def stats(self, path:Path):
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if path.is_file():
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with path.open("rb") as afs_file:
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self.__loadsys_from_afs(afs_file, path.stat().st_size)
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else:
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self.__loadsys_from_folder(path / "sys")
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files_map = self.__get_formated_map()
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files_map.sort(key=lambda x: x[1]) # sort by offset
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# Offsets intersect
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dup_offsets_tuples = []
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last_tuple = (-1, "-1", "0") # empty space search init
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new_set = True
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# Filenames duplicates
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dup_names_dict = {} # tmp dict for grouping by filename
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dup_names_tuples = []
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# For empty blocks
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empty_space_tuples = []
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for file_tuple in files_map:
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# Filenames duplicates
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if not file_tuple[6] in dup_names_dict:
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dup_names_dict[file_tuple[6]] = [file_tuple]
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else:
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dup_names_dict[file_tuple[6]].append(file_tuple)
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# Offsets intersect
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if file_tuple[1] < last_tuple[1]:
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if new_set:
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dup_offsets_tuples.append("Files sharing same offsets:\n")
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new_set = False
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dup_offsets_tuples.append(file_tuple)
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else:
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new_set = True
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# Empty blocks
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last_block_end = ceil(int(last_tuple[2], base=16) / Afs.ALIGN) * Afs.ALIGN
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if int(file_tuple[1], base=16) - last_block_end >= Afs.ALIGN:
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empty_space_tuples.append( (last_tuple[2], file_tuple[1], f"{int(file_tuple[1], base=16) - int(last_tuple[2], base=16):08x}", file_tuple[6]) )
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last_tuple = file_tuple
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for filename in dup_names_dict:
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if len(dup_names_dict[filename]) > 1:
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dup_names_tuples += ["Files sharing same name:\n"] + [file_tuple for file_tuple in dup_names_dict[filename]]
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dup_offsets = "Yes" if len(dup_offsets_tuples) > 1 else "No"
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dup_names = "Yes" if len(dup_names_tuples) > 1 else "No"
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empty_space = "Yes" if len(empty_space_tuples) > 1 else "No"
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files_info = f"AFS Magic/Version : {str(self.__get_magic())[2:-1]}\n"
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files_info += f"TOC offset of the FD offset : 0x{self.__filenamedirectory_offset_offset:x}\n" if self.__filenamedirectory else ""
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files_info += f"Multiple files using same offsets: {dup_offsets}\n"
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files_info += f"Multiple files using same name : {dup_names}\n" if self.__filenamedirectory else ""
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files_info += f"Empty blocks : {empty_space}\n"
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self.__print("Global infos and AFS space mapping:", files_map, infos=files_info)
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if dup_offsets_tuples:
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self.__print("Files sharing same AFS offsets:", dup_offsets_tuples)
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if dup_names_tuples:
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self.__print("Files using same filenames:", dup_names_tuples)
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if empty_space_tuples:
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self.__print("Empty blocks between files (filename = name of the previous file):", empty_space_tuples, columns=[1,2,3,6])
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def __print(self, title:str, lines_tuples, columns:list = list(range(0,7)), infos:str = ""):
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stats_buffer = "#"*100+f"\n# {title}\n"+"#"*100+f"\n{infos}|"+"-"*99+"\n"
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if 0 in columns: stats_buffer += "| Index ";
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if 1 in columns: stats_buffer += "| b offset ";
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if 2 in columns: stats_buffer += "| e offset ";
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if 3 in columns: stats_buffer += "| length ";
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if 4 in columns: stats_buffer += "| YYYY-mm-dd HH:MM:SS ";
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if 5 in columns: stats_buffer += "| FD last ";
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if 6 in columns: stats_buffer += "| Filename";
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stats_buffer += "\n|"+"-"*99+"\n"
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for line in lines_tuples:
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stats_buffer += line if type(line) == str else "| "+" | ".join(line)+"\n"
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print(stats_buffer, end='')
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# end offset not included (0,1) -> len=1
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def __get_offsets_map(self):
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# offsets_map is used to check next used offset when updating files
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# we also check if there is intersect between files
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offsets_map = [(0, len(self.__tableofcontent))]
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for i in range(0, self.__file_count):
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file_offset = self.__get_file_offset(i)
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offsets_map.append( (file_offset, file_offset + self.__get_file_len(i)) )
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if self.__filenamedirectory:
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filenamedirectory_offset = self.__get_filenamedirectory_offset()
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offsets_map.append( (filenamedirectory_offset, filenamedirectory_offset + self.__get_filenamedirectory_len()) )
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offsets_map.sort(key=lambda x: x[0])
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# Check if there is problems in file memory mapping
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last_tuple = (-1, -1)
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for i, offsets_tuple in enumerate(offsets_map):
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if offsets_tuple[0] < last_tuple[1]:
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raise Exception(f"Error - Multiple files use same file offsets ranges.")
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last_tuple = offsets_tuple
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offsets_map[i] = offsets_tuple[0]
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return offsets_map
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# end offset not included (0,1) -> len=1
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def __get_formated_map(self):
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files_map = [("SYS TOC ", "00000000", f"{len(self.__tableofcontent):08x}", f"{len(self.__tableofcontent):08x}", "SYS TOC"+' '*12, "SYS TOC ", "SYS TOC")]
|
|
|
|
for i in range(0, self.__file_count):
|
|
file_offset = self.__get_file_offset(i)
|
|
file_len = self.__get_file_len(i)
|
|
file_date = datetime.fromtimestamp(self.__get_mtime(i)).strftime("%Y-%m-%d %H:%M:%S") if self.__filenamedirectory else " "*19
|
|
filename = self.__get_file_name(i) if self.__filenamedirectory else f"{i:08}"
|
|
fdlast = f"{self.__get_file_fdlast(i):08x}" if self.__filenamedirectory else " "*8
|
|
files_map.append((f"{i:08x}", f"{file_offset:08x}", f"{file_offset + file_len:08x}", f"{file_len:08x}", file_date, fdlast, filename))
|
|
|
|
if self.__filenamedirectory:
|
|
files_map.append(("SYS FD ", f"{self.__filenamedirectory_offset:08x}", \
|
|
f"{self.__filenamedirectory_offset + len(self.__filenamedirectory):08x}", \
|
|
f"{len(self.__filenamedirectory):08x}", "SYS FD"+' '*13, "SYS FD ", "SYS FD"))
|
|
return files_map
|
|
|
|
|
|
def get_argparser():
|
|
import argparse
|
|
parser = argparse.ArgumentParser(description='AFS packer & unpacker - [GameCube] v' + __version__)
|
|
parser.add_argument('--version', action='version', version='%(prog)s ' + __version__)
|
|
parser.add_argument('-v', '--verbose', action='store_true', help='verbose mode')
|
|
parser.add_argument('input_path', metavar='INPUT', help='')
|
|
parser.add_argument('output_path', metavar='OUTPUT', help='', nargs='?', default="")
|
|
|
|
group = parser.add_mutually_exclusive_group(required=True)
|
|
group.add_argument('-p', '--pack', action='store_true', help="-p source_folder (dest_file.afs) : Pack source_folder in new file source_folder.afs or dest_file.afs if specified.")
|
|
group.add_argument('-u', '--unpack', action='store_true', help="-u source_afs.afs (dest_folder) : Unpack the AFS in new folder source_afs or dest_folder if specified.")
|
|
group.add_argument('-s', '--stats', action='store_true', help="-s source_afs.afs or source_folder : Get stats about AFS, files, memory, lengths and offsets.")
|
|
group.add_argument('-r', '--rebuild', help="-r source_folder fndo_offset : Rebuild AFS tableofcontent (TOC) and filenamedirectory (FND) using filenamedirectory_offset_offset=fndo_offset (the offset in the TOC).")
|
|
return parser
|
|
|
|
|
|
if __name__ == '__main__':
|
|
logging.basicConfig(format='%(levelname)s:%(message)s', level=logging.INFO)
|
|
args = get_argparser().parse_args()
|
|
|
|
p_input = Path(args.input_path)
|
|
p_output = Path(args.output_path)
|
|
|
|
afs = Afs()
|
|
if args.verbose:
|
|
logging.getLogger().setLevel(logging.DEBUG)
|
|
|
|
if args.pack:
|
|
logging.info("### Pack in new AFS")
|
|
if(p_output == Path(".")):
|
|
p_output = Path(p_input.with_suffix(".afs"))
|
|
logging.info(f"packing folder {p_input} in {p_output}")
|
|
afs.pack( p_input, p_output )
|
|
elif args.unpack:
|
|
logging.info("### Unpack AFS in new folder")
|
|
if p_output == Path("."):
|
|
p_output = p_input.parent / p_input.stem
|
|
logging.info(f"unpacking AFS {p_input} in {p_output}")
|
|
afs.unpack( p_input, p_output )
|
|
elif args.stats:
|
|
afs.stats(p_input)
|