Splits a path in to volume, directory, and filename portions. Assumes that
the last file is a path unless the path ends in '\\', '\\.', '\\..'
or $no_file is true. On Win32 this means that $no_file true makes this return
( $volume, $path, undef ).
Separators accepted are \ and /.
Volumes can be drive letters or UNC sharenames (\\server\share).
The results can be passed to ``catpath'' to get back a path equivalent to
(usually identical to) the original path.
splitdir
The opposite of ``catdir()''.
@dirs = File::Spec->splitdir( $directories );
$directories must be only the directory portion of the path on systems
that have the concept of a volume or that have path syntax that differentiates
files from directories.
Unlike just splitting the directories on the separator, leading empty and
trailing directory entries can be returned, because these are significant
on some OSs. So,
File::Spec->splitdir( "/a/b/c" );
Yields:
( '', 'a', 'b', '', 'c', '' )
catpath
Takes volume, directory and file portions and returns an entire path. Under
Unix, $volume is ignored, and this is just like catfile(). On other OSs,
the $volume become significant.