Accessing Source code of SAP Transport without using SAP system

I don’t think it is possible to check source code without SAP system until you understand SAP Binary code. The format in which the data are stored in the data file is AFAIK, an SAP own format and you can use R3trans to read code using the command.

R3trans -l <data file> [-w <logfile>] [-v <verbose level>]

To know more about R3trans, you can refer to this link −