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biff.py    263 lines (195 with data), 7.8 kB

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# -*-python-*-
# ie_shell.py - Simple shell for Infinity Engine-based game files
# Copyright (C) 2004 by Jaroslav Benkovsky, <edheldil@users.sf.net>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# RCS: $Id: biff.py,v 1.3 2006/07/08 14:29:26 edheldil Exp $
import gzip
from ie_shell.formats.format import Format, register_format
class BIFF_Format (Format):
def __init__ (self, filename):
Format.__init__ (self, filename)
self.expect_signature = 'BIFF'
self.file_list = []
self.tileset_list = []
self.header_desc = (
{ 'key': 'signature',
'type': 'STR4',
'off': 0x0000,
'label': 'Signature' },
{ 'key': 'version',
'type': 'STR4',
'off':0x0004,
'label': 'Version'},
{ 'key': 'num_of_files',
'type': 'DWORD',
'off': 0x0008,
'label': '# of files'},
{ 'key': 'num_of_tilesets',
'type': 'DWORD',
'off': 0x000C,
'label': '# of tilesets'},
{ 'key': 'files_offset',
'type': 'DWORD',
'off': 0x0010,
'label': 'First file record offset'},
)
self.file_record_desc = (
{ 'key': 'locator',
'type': 'DWORD',
'off': 0x0000,
'label': 'File resource locator' },
{ 'key': 'data_offset',
'type': 'DWORD',
'off': 0x0004,
'label': 'File data offset' },
{ 'key': 'data_size',
'type': 'DWORD',
'off': 0x0008,
'label': 'File data size' },
{ 'key': 'type',
'type': 'RESTYPE',
'off': 0x000C,
'label': 'File res type' },
{ 'key': 'unknown',
'type': 'WORD',
'off': 0x000E,
'label': '???' },
)
self.tileset_record_desc = (
{ 'key': 'locator',
'type': 'DWORD',
'off': 0x0000,
'label': 'Tileset resource locator' },
{ 'key': 'data_offset',
'type': 'DWORD',
'off': 0x0004,
'label': 'Tileset data offset' },
{ 'key': 'tile_cnt',
'type': 'DWORD',
'off': 0x0008,
'label': 'Number of tiles' },
{ 'key': 'tile_size',
'type': 'DWORD',
'off': 0x000C,
'label': 'Size of tile' },
{ 'key': 'type',
'type': 'RESTYPE',
'off': 0x0010,
'label': 'Tileset res type' },
{ 'key': 'unknown_12',
'type': 'WORD',
'off': 0x0012,
'label': 'Unknown 12' },
)
def decode_file (self):
self.decode_header ()
off = self.header['files_offset']
for i in range (self.header['num_of_files']):
obj = {}
self.decode_file_record (off, obj)
self.file_list.append (obj)
off = off + 16
for i in range (self.header['num_of_tilesets']):
obj = {}
self.decode_tileset_record (off, obj)
self.tileset_list.append (obj)
off = off + 20
def print_file (self):
self.print_header ()
i = 0
for obj in self.file_list:
print 'File #%d' %i
self.print_file_record (obj)
i = i + 1
i = 0
for obj in self.tileset_list:
print 'Tileset #%d' %i
self.print_tileset_record (obj)
i = i + 1
def decode_header (self):
self.header = {}
self.decode_by_desc (0x0000, self.header_desc, self.header)
def print_header (self):
self.print_by_desc (self.header, self.header_desc)
def decode_file_record (self, offset, obj):
self.decode_by_desc (offset, self.file_record_desc, obj)
def print_file_record (self, obj):
self.print_by_desc (obj, self.file_record_desc)
def decode_tileset_record (self, offset, obj):
self.decode_by_desc (offset, self.tileset_record_desc, obj)
def print_tileset_record (self, obj):
self.print_by_desc (obj, self.tileset_record_desc)
def get_ntset_data (self, obj):
obj['data'] = self.stream.decode_blob (obj['data_offset'], obj['data_size'])
def get_tileset_data (self, obj):
# FIXME: also add bytes for the TIS header
obj['data'] = self.stream.decode_blob (obj['data_offset'], obj['tile_size'] * obj['tile_cnt'])
def get_file_data (self, obj):
if obj.has_key ('tile_cnt'):
return self.get_tileset_data (obj)
else:
return self.get_ntset_data (obj)
def save_file_data (self, filename, obj):
self.get_file_data (obj)
fh = open (filename, 'w')
fh.write (obj['data'])
fh.close ()
class BIFC_V1_Format (Format):
def __init__ (self, filename):
Format.__init__ (self, filename)
self.expect_signature = 'BIF '
self.header_desc = (
{ 'key': 'signature',
'type': 'STR4',
'off': 0x0000,
'label': 'Signature' },
{ 'key': 'version',
'type': 'STR4',
'off':0x0004,
'label': 'Version'},
{ 'key': 'filename_len',
'type': 'DWORD',
'off': 0x0008,
'label': 'Filename length'},
{ 'key': 'filename',
'type': 'STRSIZED',
'off': 0x0008,
'label': 'Filename'},
{ 'key': 'uncompressed_size',
'type': 'DWORD',
'off': 0x0000,
'label': 'Uncompressed size'},
{ 'key': 'compressed_size',
'type': 'DWORD',
'off': 0x0000,
'label': 'Compressed size'},
)
def decode_file (self):
self.decode_header ()
self.decode_by_desc (0x000c + self.header['filename_len'], (self.header_desc[4], ), self.header)
self.decode_by_desc (0x0010 + self.header['filename_len'], ( self.header_desc[5], ), self.header)
#self.stream.seek (..)
data = self.stream.decode_blob (0x0014 + self.header['filename_len'], self.header['compressed_size'])
self.data = gzip.zlib.decompress (data)
def print_file (self):
self.print_header ()
def decode_header (self):
self.header = {}
self.decode_by_desc (0x0000, self.header_desc, self.header)
def print_header (self):
self.print_by_desc (self.header, self.header_desc)
register_format ('BIFF', 'V1', BIFF_Format)
register_format ('BIF ', 'V1.0', BIFC_V1_Format)