Suppose I have downloaded a site's web pages into a directory. I am using WWW::Mechanize to recursively traverse the pages like this:

my $m = new WWW::Mechanize;
my $ROOT = "/path/to/download/directory";

sub visit {
  my $url = shift;
  $m->get($url);
  ...
  for my $link ($m->links) {
    visit($link->url_abs); # problem is here
  }
}
visit("file:$ROOT/index.html");
[download]

Basically I want to make $ROOT the new root of the site.

There are two issues:

• Absolute urls (like /foo) won't get re-based correctly off of $ROOT.
• In relative urls I'd like to protect against the use of .. which go beyond the top level.

Examples:

<a href="/foo"></a>
  -- $link->url_abs is "file:/foo"
<a href="../bar"></a>
  -- $link->url_abs is "file:/path/to/download/bar"
[download]

Is there a clean way to handle these problems?

I've thought about starting up a local web server to serve the pages, but it seems like a lot of overhead just to perform some url munging.

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