NAME

       Lintian::Lab::ManifestDiff -- Difference representation between two Manifests

SYNOPSIS

        use Lintian::Lab::Manifest;

        my $olist = Lintian::Lab::Manifest->new ('binary');
        my $nlist = Lintian::Lab::Manifest->new ('binary');
        $olist->read_list ('old/binary-packages');
        $nlist->read_list ('new/binary-packages');
        my $diff = $olist->diff($nlist);
        foreach my $added (@{ $diff->added }) {
           my $entry = $nlist->get (@$added);
           # do something
        }
        foreach my $removed (@{ $diff->removed }) {
           my $entry = $olist->get (@$removed);
           # do something
        }
        foreach my $changed (@{ $diff->changed }) {
           my $oentry = $olist->get (@$changed);
           my $nentry = $nlist->get (@$changed);
           # use/diff $oentry and $nentry as needed
        }

DESCRIPTION

       Instances of this class provides access to the packages list used by the Lab as caches.

METHODS

       $diff->added
           Returns a listref containing the keys of the elements that has been added.

           Each element is a listref of keys; this list (when dereferenced) can be used with the
           manifest's get method to look up the item.

       $diff->removed
           Returns a listref containing the keys of the elements that has been removed.

           Each element is a listref of keys; this list (when dereferenced) can be used with the
           manifest's get method to look up the item.

       $diff->changed
           Returns a listref containing the keys of the elements that has been changed.

           Each element is a listref of keys; this list (when dereferenced) can be used with the
           manifest's get method to look up the item.

       $diff->nlist
           Returns the "new" manifest used to create this diff.  Note the manifest is not copied
           and may have been changed since the diff has been created.

       $diff->olist
           Returns the "orig" manifest used to create this diff.  Note the manifest is not copied
           and may have been changed since the diff has been created.

       Originally written by Niels Thykier <niels@thykier.net> for Lintian.

SEE ALSO

       lintian(1)