source: trunk/gsdl/perllib/classify/HTML.pm@ 717

###########################################################################
#
# HTML.pm --
# A component of the Greenstone digital library software
# from the New Zealand Digital Library Project at the 
# University of Waikato, New Zealand.
#
# Copyright (C) 1999 New Zealand Digital Library Project
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
###########################################################################

# html classifier plugin - creates an empty classification
# that's simply a link to a web page
# options are:
# title=Title       -- (optional) the title field for this classification.
#                      if not included title field 'Browse'
# url=url           -- the url of the web page to link to

package HTML;

sub new {
    my ($class, @options) = @_;

    my ($title, $url);

    foreach $option (@options) {
    if ($option =~ /^url=(.*)$/i) {
        $url = $1;
    } elsif ($option =~ /^title=(.*)$/i) {
        $title = $1;
    }
    }

    die "Error: HTML classifier contains no 'url' option\n" 
    unless defined $url;

    $title = 'Browse' unless defined $title;

    return bless {
    'url' => $url,
    'title' => $title
    }, $class;
}

sub init {
    my $self = shift (@_);
}

sub classify {
    my $self = shift (@_);
    my ($doc_obj) = @_;

    # we don't do anything for individual documents
}

sub get_classify_info {
    my $self = shift (@_);

    my %classifyinfo = ('thistype'=>'Invisible',
            'childtype'=>'HTML',
            'Title'=>$self->{'title'},
            'contains'=>[]);

    push (@{$classifyinfo{'contains'}}, {'OID'=>$self->{'url'}});

    return \%classifyinfo;
}


1;