Extracting Data from Archived data files in R/3

Hi Experts,

I have a situation here!!!

I want to extract data from R/3 for BW. In R/3 system, data is present in archived files (which are not in readable format). In R/3 system, the report definitions are ABAP codes which give output. These ABAP codes uses same infostructure, archived files are also same, but the logic is different for every report. I am trying to modify these ABAP codes to get data in a format which can be loaded in BW, but then i have to make different cubes for different report outputs in BW.

Is there any way in which i can read the structure of these archived files so that i can design a single cube to store data of these files?