Thread: need Help! reading a binary file

Hi guys, I have question. I haven’t program in c++ in over 5 years last time I was programming I was learning the langrage in school. I now have jump back into programming in c++ and i am trying to make a program that would be able to read a binary file and get the data from it. so i can save it to a text file.

Code:

This is how the data is structured.

------------------------------------------------
Size (Bytes)  	     Name  	      Type  	      Description
-------the structure of the file--------------------------------------------
  4 	                         Signature 	  char[4] 	    File Signature ('logi') no terminating null
  4 	                         version 	    uint32 	      File Format Version
  4 	                         count 	      uint32 	      Number of entries that follow

Variable 	entries
-----------------------------------------------------
1 	              namelenth 	uint8 	      Length of name
namelenth 	      name 	      char[] 	      name (nameLength characters) no terminating null
6 	              id 	        uint8[6] 	    HEXVALUE   
8                 FILETIME    FILETIME      100-nanosecond increments since January 1, 1601 (UTC). 64-bit integer
------------------------------------------------------------------------


here is a hex example of the file(paste it in to your hex editor and save it)
------------------------------------
6C6F676905000000010000000D5468697369737468656E616D65000A11F1D11160992BFCD425C901
------------------------------------

Lets break it down
----------------------------------------------------------

6C6F6769 = logi                                Signature
05000000 = 5                                    version
01000000 = 1                                    count
----------------------------------------------------------

0D = 13                                         namelenth
5468697369737468656E616D65 =  Thisisthename     name
000A11F1D111 = 000A11F1D111                     HEXVALUE  hex value of name 
60992BFCD425C901 = 3:55:05 AM  10/4/2008        FILETIME
----------------------------------------------------------

Signature = logi
version = 5
count = 1
namelenth = 13
name = Thisisthename
HEXVALUE = 000A11F1D111
FILETIME = 3:55:05 AM  10/4/2008

---------------------------------------

I can not change the format of the file it has already been set a long time ago.

I am not looking for anybody to do this program for me I am just trying to be point in the
Right direction.

By the way I don’t have access to visual studio.net IDE

Currently I am using the free IDE "Bloodshed Software - Dev-C++"

I need to make this program work with Linux and windows. windows whould be fine right now and it has to be in c/c++

Any help will be greatly appreciated. thank you.

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