getstringlenght.bat

::---------------------------------------
::usage example ran from cmd.exe with stringlenght.bat either in path or the current directory:
::
::getstringlenght.bat 9223372036854775807
::
::cmd will respond with:
::
::19
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@echo off&setlocal enabledelayedexpansion
set "string=%~1"
call :strlen ans string
echo !ans!
exit/b
:strlen
set l=0
set "s=!%~2!#"
for %%P in (512 256 128 64 32 16 8 4 2 1) do (
	if "!s:~%%P,1!" NEQ "" (
		set/a "l+=%%P"
		set "s=!s:~%%P!"
	)
)
set "%~1=%l%"
exit /b