It is partiallly applicable. For nearly all pathes coming from the outside, I don't know whether they are Unix or Windows style. They might even be mixed, such as a/b\c\d/e. This is possible since we have the requirement (actually a very common requirement in mixed language projects), that certain characters are forbidden in directory/filenames. For example, no '\', no '@' etc.

As said before, this is not difficult to implement, but I was thinking that maybe someone has already published utilities I could re-use. In practice, I have to normalize the path name before the first use, by (at least) converting the backslashes to forward slashes, but being careful with things like double backslash etc.