[luatex] fio library byte order

[luigi scarso]

On Fri, Jun 19, 2020 at 11:17 PM Reinhard Kotucha <reinhard.kotucha at web.de>
wrote:

> Hi,
> it's nice that with the fio library LuaTeX can now process binary
> files.  What I'm missing is the ability to specify the byte order
> (little vs. big endian).
>
>
I don't knwo if it can help,
but if you can use ffi I think you can know the endianness of the current
platform with with this code:
\directlua{
ffi.cdef [[
 union endianness {
   int32_t i;
   char c[4];
 }
]]
local x = ffi.new('union endianness x',{i=1})
if(x.c[0]==1) then
  print "little endian"
else
 print "big endian"
end
}
\end

-- 
luigi
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