Add backslash if a string doesn't have it

Question

I'm developing a command line Batch file on Windows 7. I'm trying to add \ to a dir if it hasn't.

This is only a test:

@echo off

set solutionDir=%CD%\

echo %solutionDir%

if [%solutionDir:~-1%] EQU [\] echo ends with \

This line if [%solutionDir:~-1%] EQU [\] echo ends with \ works fine to check if it ends with \ but I want to check if it doesn't end with a \.

I have tried all of these but in all of them I get a syntax error:

1. if [%solutionDir:~-1%] NEQ [\] echo ends with \
2. if NOT [%solutionDir:~-1%]==[\] echo ends with \
3. if [%solutionDir:~-1%]!=[\] echo ends with \

I'm getting current dir and I want to add it \ if it hasn't it.

How can I do it?

Answer 1

Given that if [%solutionDir:~-1%] EQU [\] echo ends with \ works, the most logical thing to do is add a NOT clause after the if to make it do the opposite.

It would become:

if NOT [%solutionDir:~-1%] EQU [\] echo does not end with \