Windows BAT : test if a specific file is empty

Question

I would like to check if a specific file is empty in a windows .bat file. Here is my non working script :

set dir=\"C:\\test\"
set file=\"%dir%\\fff.txt\"

c         


        

Answer 1

Or try it with

@echo off
set "dir=C:\temp"
set "file=%dir%\a.txt"

call :CheckEmpty "%file%"
goto :eof

:CheckEmpty
if %~z1 == 0 exit
ftp -s:"%dir%\ftp.action"
goto :eof

The main difference is that I use a function call and use the %~z1, as the modifiers only works for paramters like %1, %2..%9 or for-loop parameters like %%a ...