Conception 2's .cfsi archive full of air?

[LightXPS]

I've got a problem with this big file from Conception 2: Children of the Seven Stars for PC: The size of that one is at about 2.7GB, but I only see the file 00000000 (size is 10KB) when opening this archive with 7z. On the other hand, 7z notes that there are data behind the lonesome file I see. Question for me is now:
How can I make all those other files visible? It can't be that the file I can unpack from that one is the only file in it, 'cause that would make this file full of air...

[DKDave]

There are over 8,500 files in that archive.

This script should extract them all for you. It's specific to this archive, so probably won't work on anything else.


# CFSI extract

Set DATA_START 0x2d7a0
Goto 0x0003

For B = 1 to 405

# Get folder name/entry count

Get NAME_SIZE Byte
GetDString FOLDER_NAME NAME_SIZE
Get FOLDER_ITEMS Byte

If FOLDER_ITEMS = 0xFC
Get FOLDER_ITEMS Short
Endif


# Process entries for this folder

For A = 1 to FOLDER_ITEMS

Get NAME_SIZE Byte
GetDString FILENAME NAME_SIZE
Get OFFSET Long
XMath OFFSET "DATA_START + (OFFSET * 0x10)"
Get SIZE Long
Set OUT_FILE ""
String OUT_FILE + FOLDER_NAME
String OUT_FILE + FILENAME

Log OUT_FILE OFFSET SIZE

Next A

Next B