How are SLM files identified in the cache?

No no, my question is how to get data from SLM file without using MeshesSL - in what way MeshesSL decodes the original SLM asset files that are stored in cache? When I open the cache file with notepadd++ it shows ugly signs - which means it is binary file encoded in special way. I am sure there is some kind of way to read this - like which bytes range corresponds to which float number for example. 

And the reason I avoid using meshesSL or Mesh Helper is that they do not accpet standard input - so i can not automate parsing 10 XMLs through the program and instead i have to always manually choose XML one by one.