Bitness from NppExec

Michael Vincent

Is there a way to determine the bitness (32 or 64) of Notepad++ from the NppExec plugin? I can get the N++ version:

NPP_SENDMSG NPPM_GETNPPVERSION
SET nppmajver ~ int($(MSG_RESULT)/65536)
SET nppminver ~ $(MSG_RESULT)%65536
echo $(nppmajver).$(nppminver)

But wondering if there’s a way to determine 32 or 64 bit? Obviously getting the bitness of the NppExec plugin itself would work. I was trying a clever math thing with INT but not working.

Any insights?

dinkumoil

@Michael-Vincent

If a 32 bit process runs on a 64 bit OS it has a slightly different set of environment variables than a 64 bit process, they differ e.g. in the value of the ProgramFiles(x86) environment variable.

For a 32 bit process on a 64 bit OS its value is the same like the value of the ProgramFiles variable. For a 64 bit process the values of these variables are different. And for a 32 bit process on a 32 bit OS there is no ProgramFiles(x86) variable.

Thus, the detection path would be:

Check if there is ProgramFiles(x86) variable : No -> 32 bit, finish
Check if ProgramFiles(x86) is equal to ProgramFiles : Yes -> 32 bit, No -> 64 bit

Unfortunately it is not possible to use NppExec’s $(SYS.ProgramFiles(x86)) because the parser is not able to deal with the paranthesis in the variable name (testet with NppExec v0.6 RC2). But there is a workaround: parsing the output of the console’s SET command.

Test the following NppExec script:

npe_console -- m-
npp_console disable

npe_console -- v+
cmd.exe /c "for /f "tokens=1* delims==" %a in ('set ProgramFiles^(x86^) 2^>NUL') do @echo %b"
set local $(CallResult) = $(OUTPUT)
npe_console -- v-

if "$(CallResult)" == "" then
  set local $(Bitness) = 32
else
  if "$(CallResult)" == "$(SYS.ProgramFiles)" then
    set local $(Bitness) = 32
  else
    set local $(Bitness) = 64
  endif
endif

npp_console enable
echo $(Bitness)

Michael Vincent

@dinkumoil : Works great!