This is a c++ equivalent of the original sdat2img by xpirt - luxi78 - howellzhu which was written in python
sdat2img <transfer_list> <system_new_file> [system_img]
<transfer_list>= input, system.transfer.list from rom zip<system_new_file>= input, system.new.dat from rom zip[system_img]= output ext4 raw image file
This is a simple example on a Linux system:
~$ ./sdat2img system.transfer.list system.new.dat system.img
or
~$ ./sdat2img system.transfer.list system.new.dat