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 /.
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.
abs2rel
Takes a destination path and an optional base path returns a relative path
from the base path to the destination path:
If $base is not present or '', then ``cwd()'' is used. If $base is relative,
then it is converted to absolute form using ``rel2abs()''. This means that it
is taken to be relative to cwd().
On systems with the concept of a volume, this assumes that both paths
are on the $destination volume, and ignores the $base volume.
On systems that have a grammar that indicates filenames, this ignores the
$base filename as well. Otherwise all path components are assumed to be
directories.
If $path is relative, it is converted to absolute form using ``rel2abs()''.
This means that it is taken to be relative to ``cwd()''.
If $base is not present or '', then cwd() is used. If $base is relative,
then it is converted to absolute form using ``rel2abs()''. This means that it
is taken to be relative to ``cwd()''.
Assumes that both paths are on the $base volume, and ignores the
$destination volume.
On systems that have a grammar that indicates filenames, this ignores the
$base filename as well. Otherwise all path components are assumed to be
directories.
If $path is absolute, it is cleaned up and returned using ``canonpath()''.