VPK File Format/vpk2 reader.py
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January 2024
January 2024
Put next to pak01_dir.vpk
and run.
import os,struct,binascii
def get_int4():
return int( struct.unpack("I",index.read(4))[0] )
def get_int2():
return int( struct.unpack("H",index.read(2))[0] )
def get_sz():
out = ""
while True:
cur = index.read(1)
if cur == b'\x00': break
out += struct.unpack("c",cur)[0].decode("ASCII")
return out
index = open("pak01_dir.vpk",'rb')
print( "Signature:",binascii.b2a_hex(index.read(4)) )
print( "Version:",get_int4() )
print( "Directory length:", get_int4() )
print( "Unknown1:", get_int4() )
unknown2 = get_int4() # footer length?
print( "Unknown2:", unknown2 )
unknown3 = get_int4()
print( "Unknown3:", unknown3 )
print( "Unknown4:", get_int4() )
class VpkFile():
path = ""
CRC = -1
archive_index = -1
offset = -1
length = -1
preload = bytes()
vpk_files = []
while True:
extension = get_sz()
if not extension: break
while True:
folder = get_sz()
if not folder: break
while True:
filename = get_sz()
if not filename: break
cur_file = VpkFile()
vpk_files.append(cur_file)
cur_file.path = "{}/{}.{}".format(folder,filename,extension)
cur_file.CRC = get_int4()
preload_bytes = get_int2()
cur_file.archive_index = get_int2()
if cur_file.archive_index == b'\x7fff':
print("EMBED")
cur_file.offset = get_int4()
cur_file.length = get_int4()
get_int2() # terminator
if preload_bytes:
cur_file.preload = index.read(preload_bytes)
index.close()
print("Extracting...")
for vf in vpk_files:
print(vf.path,"({} bytes)".format(len(vf.preload)+vf.length))
full_path = os.path.join(os.getcwd(),"vpk_extracted",vf.path.replace("/","\\"))
dir = os.path.dirname(full_path)
if not os.path.isdir(dir):
os.makedirs(dir)
out_data = open(full_path,'wb')
out_data.write(vf.preload)
if vf.length:
vpk = open("pak01_{}.vpk".format(str(vf.archive_index).zfill(3)),'rb')
vpk.seek(vf.offset)
out_data.write(vpk.read(vf.length))
vpk.close()
out_data.close()
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January 2024
January 2024