Grep/Source/MoinMoin.pm

#!/usr/bin/perl

use warnings;
use strict;

package Grep::Source::MoinMoin;

=head1 NAME

Grep::Source::MoinMoin - scraper for MoinMoin wiki search results

=cut

use HTML::TreeBuilder;
use WWW::Mechanize;
use XML::Feed;

=head2 content_have

Return regex to match against content

=cut

sub content_have {
        qr/MoinMoin/
}

=head2 fetch

  $plugin->fetch( $source );

=cut

sub fetch {
        my $self = shift;

        my $parent = shift;
        my ($feed,$uri,$q) = ($parent->feed, $parent->uri,$parent->q);
        die "no uri" unless ($uri);
        die "feed is not a Grep::Model::Feed but ", ref $feed unless $feed->isa('Grep::Model::Feed');

        my $mech = WWW::Mechanize->new();

        $mech->get( $uri );

        warn "submit $self form on $uri\n";

        $mech->submit_form(
                fields => {
                        value => $q,
                },
                button => 'fullsearch',
        ) or die "can't $self submit";

        warn "parse result page\n";

        my $tree = HTML::TreeBuilder->new or die "can't create html tree";
        $tree->parse( $mech->content ) or die "can't parse fetched content";

        my $div = $tree->look_down( '_tag', 'div', sub {
                        ( $_[0]->attr('class') || '' ) eq 'searchresults'
        });

        die "can't find div with class searchresults" unless ( $div );

        my $max = 5;
        my $nr = 1;

        foreach my $dt ( $div->look_down( '_tag', 'dt' ) ) {
                my $a = $dt->look_down( '_tag', 'a', sub { $_[0]->attr('href') } );
                if ( $a ) {

                        my $page_uri = $uri . $a->attr('href');
                        $page_uri =~ s!\Q?highlight=\E.*$!!;

                        warn "fetching page: ",$a->as_text," from $page_uri\n";
                        if ( $mech->follow_link( url => $a->attr('href') ) ) {

                                my $page_tree = HTML::TreeBuilder->new or die "can't create page tree";
                                $page_tree->parse( $mech->content ) or die "can't parse page at $page_uri";

                                my $div = $page_tree->look_down( '_tag', 'div', sub { ( $_[0]->attr('id') || '' ) eq 'page' } );

                                die "can't find <div id=page>" unless ($div);

                                $parent->add_record(
                                        in_feed => $feed,
                                        title => $mech->title,
                                        link => $page_uri,
                                        content => $div->as_HTML,
#                                       summary => 
#                                       category => 
#                                       author => 
#                                       issued => 
#                                       modified => 
                                );

                                $mech->back;

                        } else {
                                warn "can't follow uri $page_uri: $!\n";
                        }
                }

                last if ($nr == $max);
                $nr++;
        }

        $tree->delete; # clear memory!

}

1;
1	#!/usr/bin/perl
2
3	use warnings;
4	use strict;
5
6	package Grep::Source::MoinMoin;
7
8	=head1 NAME
9
10	Grep::Source::MoinMoin - scraper for MoinMoin wiki search results
11
12	=cut
13
14	use HTML::TreeBuilder;
15	use WWW::Mechanize;
16	use XML::Feed;
17
18	=head2 content_have
19
20	Return regex to match against content
21
22	=cut
23
24	sub content_have {
25	qr/MoinMoin/
26	}
27
28	=head2 fetch
29
30	$plugin->fetch( $source );
31
32	=cut
33
34	sub fetch {
35	my $self = shift;
36
37	my $parent = shift;
38	my ($feed,$uri,$q) = ($parent->feed, $parent->uri,$parent->q);
39	die "no uri" unless ($uri);
40	die "feed is not a Grep::Model::Feed but ", ref $feed unless $feed->isa('Grep::Model::Feed');
41
42	my $mech = WWW::Mechanize->new();
43
44	$mech->get( $uri );
45
46	warn "submit $self form on $uri\n";
47
48	$mech->submit_form(
49	fields => {
50	value => $q,
51	},
52	button => 'fullsearch',
53	) or die "can't $self submit";
54
55	warn "parse result page\n";
56
57	my $tree = HTML::TreeBuilder->new or die "can't create html tree";
58	$tree->parse( $mech->content ) or die "can't parse fetched content";
59
60	my $div = $tree->look_down( '_tag', 'div', sub {
61	( $_[0]->attr('class') \|\| '' ) eq 'searchresults'
62	});
63
64	die "can't find div with class searchresults" unless ( $div );
65
66	my $max = 5;
67	my $nr = 1;
68
69	foreach my $dt ( $div->look_down( '_tag', 'dt' ) ) {
70	my $a = $dt->look_down( '_tag', 'a', sub { $_[0]->attr('href') } );
71	if ( $a ) {
72
73	my $page_uri = $uri . $a->attr('href');
74	$page_uri =~ s!\Q?highlight=\E.*$!!;
75
76	warn "fetching page: ",$a->as_text," from $page_uri\n";
77	if ( $mech->follow_link( url => $a->attr('href') ) ) {
78
79	my $page_tree = HTML::TreeBuilder->new or die "can't create page tree";
80	$page_tree->parse( $mech->content ) or die "can't parse page at $page_uri";
81
82	my $div = $page_tree->look_down( '_tag', 'div', sub { ( $_[0]->attr('id') \|\| '' ) eq 'page' } );
83
84	die "can't find <div id=page>" unless ($div);
85
86	$parent->add_record(
87	in_feed => $feed,
88	title => $mech->title,
89	link => $page_uri,
90	content => $div->as_HTML,
91	# summary =>
92	# category =>
93	# author =>
94	# issued =>
95	# modified =>
96	);
97
98	$mech->back;
99
100	} else {
101	warn "can't follow uri $page_uri: $!\n";
102	}
103	}
104
105	last if ($nr == $max);
106	$nr++;
107	}
108
109	$tree->delete; # clear memory!
110
111	}
112
113	1;