Path::Ancestor - Find the longest common ancestor of N paths
use Path::Ancestor qw(longest_common_ancestor); my $ancestor = longest_common_ancestor( "/foo/bar/baz", "/foo/bar/baz/moo", "/foo/bar/quack" ); # => "foo/bar"
Path::Ancestor finds the longest common ancestor of N file paths.
Make sure that all paths are given in canonical Unix format, either all absolute or all relative. If you have a different format, use File::Spec::canonpath to sanitize your paths before feeding them to Path::Ancestor, because Path::Ancestor won't do anything fancy in this regard.
The longest common ancestor path will never have a trailing slash, except if it's the root path (/).
/foo/bar, /foo => /foo /foo/bar, /foo/baz => /foo /foo1, /foo2 => /
Copyright 2008 by Mike Schilli, all rights reserved. This program is free software, you can redistribute it and/or modify it under the same terms as Perl itself.
2008, Mike Schilli <firstname.lastname@example.org>