/[webpac]/trunk/WebPac.pm
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /trunk/WebPac.pm

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Revision 12 - (show annotations)
Wed Jan 22 22:27:19 2003 UTC (16 years, 10 months ago) by dpavlin
File size: 4343 byte(s)
added pager for lookup in index

1 package WebPac;
2
3 use base 'CGI::Application';
4 use strict;
5
6 use HTML::Pager;
7 use HTML::FillInForm;
8 use SWISH;
9 use Unicode::MapUTF8 qw(to_utf8 from_utf8 utf8_supported_charset);
10 use DBI;
11
12 use lib '..';
13 use index_DBI;
14
15 # configuration options
16 # FIX: they really should go in configuration file!
17 my $TEMPLATE_PATH = '/data/webpac/template_html';
18 my $CHARSET = 'ISO-8859-2';
19 my $SWISH = '/usr/local/bin/swish-e';
20 my $INDEX = '/data/webpac/index/isis.index';
21 my $MAX_HITS = 500;
22 my $ON_PAGE = 10;
23
24
25 sub setup {
26 my $self = shift;
27 $self->tmpl_path($TEMPLATE_PATH);
28 $self->run_modes(
29 'search' => 'show_search_form',
30 'results' => 'show_results_list',
31 # 'user' => 'show_user_detail',
32 'index' => 'show_index',
33 );
34 $self->start_mode('search');
35 $self->mode_param('rm');
36
37 $self->header_props(-charset=>$CHARSET);
38 }
39
40 sub show_search_form {
41 my $self = shift;
42
43 # Get the CGI.pm query object
44 my $q = $self->query();
45
46 my $tmpl = $self->load_tmpl('search.html');
47 my $html = $tmpl->output;
48
49 my $fif = new HTML::FillInForm;
50
51 return $fif->fill(scalarref => \$html, fobject => $q,
52 target => 'search');
53 }
54
55 sub show_results_list {
56 my $self = shift;
57
58 my $q = $self->query();
59
60 my @swish_results; # results from swish
61
62 # load template for this page
63
64 my @s_arr; # all queries are located here
65
66 for(my $i = 1; $i <=10; $i++) {
67
68 return show_index($self, $i) if ($q->param("f".$i."_index"));
69 next if (! $q->param("f$i"));
70 next if (! $q->param("v$i"));
71
72 # re-write query from +/- to and/and not
73 my $s;
74 my $search = $q->param("v$i");
75 while ($search =~ s/\s*("[^"]+")\s*/ /) {
76 $s .= "$1 ";
77 }
78 $search =~ s/^\s+//;
79 $search =~ s/\s+$//;
80
81 foreach (split(/\s+/,$search)) {
82 if (m/^([+-])(\S+)/) {
83 $s.= ($s) ? "and " : "";
84 $s.="not " if ($1 eq "-");
85 $s.="$2* ";
86 } else {
87 $s.="$_* ";
88 }
89 }
90
91 push @s_arr,$q->param("f$i")."_swish=($s)";
92 }
93
94 my $tmpl = $self->load_tmpl('results.html');
95
96 # call swish
97 my $sh = SWISH->connect('Fork',
98 prog => $SWISH,
99 indexes => $INDEX,
100 #properties => [qw/god br nr/],
101 results => sub {
102 my ($sh,$hit) = @_;
103
104 push @swish_results, {
105 nr => ($#swish_results + 2),
106 path => $hit->swishdocpath,
107 title => to_utf8({ -string => $hit->swishtitle, -charset => $CHARSET }),
108 rank => $hit->swishrank };
109
110 # my @fields = $hit->field_names;
111 # print "Field '$_' = '", $hit->$_, "'<br>\n" for sort @fields;
112 },
113 #startnum => 0,
114 maxhits => $MAX_HITS,
115 );
116
117 die $SWISH::errstr unless $sh;
118
119 my $hits = $sh->query(join(" and ",@s_arr)) || 0; # FIX: and/or
120
121 $tmpl->param('hits',$hits);
122 $tmpl->param('search',join(" and ",@s_arr));
123
124 # create a Pager object
125 my $pager = HTML::Pager->new(
126 # required parameters
127 query => $q,
128 get_data_callback => sub {
129 my ($offset, $rows) = @_;
130
131 my @result;
132 for (my $i=0; $i<$rows; $i++) {
133 push @result, $swish_results[$offset+$i] if $swish_results[$offset+$i];
134 }
135 return \@result;
136 },
137 rows => $hits,
138 page_size => $ON_PAGE,
139 # some optional parameters
140 persist_vars => [
141 'rm',
142 'f1', 'v1',
143 'f2', 'v2',
144 'f3', 'v3',
145 'f4', 'v4',
146 'f5', 'v5',
147 'f6', 'v6',
148 'f7', 'v7',
149 'f8', 'v8',
150 'f9', 'v9',
151 ],
152 #cell_space_color => '#000000',
153 #cell_background_color => '#ffffff',
154 #nav_background_color => '#dddddd',
155 #javascript_presubmit => 'last_minute_javascript()',
156 debug => 1,
157 template => $tmpl,
158 );
159
160 my $html = $pager->output;
161
162 return $html;
163 }
164
165 sub show_index {
166 my $self = shift;
167 my $i = shift; # field number
168
169 my $q = $self->query();
170
171 my $field = $q->param("f$i");
172 my $limit = $q->param("v$i");
173
174 my $html;
175
176 my $index = new index_DBI();
177
178 my $total = $index->check($field);
179 if (! $total) {
180 my $tmpl = $self->load_tmpl('no_index.html');
181 $tmpl->param('field',$field);
182 $html = $tmpl->output;
183 return $html;
184 }
185
186 my $tmpl = $self->load_tmpl('index_res.html');
187 $tmpl->param('field',$field);
188 $tmpl->param('limit',$limit);
189 $tmpl->param('total',$total);
190
191 my $pager = HTML::Pager->new(
192 query => $q,
193 get_data_callback => sub {
194 my ($offset, $rows) = @_;
195
196 my @result = $index->fetch($field,'item',$limit, $offset, $rows);
197 return \@result;
198 },
199 rows => $total,
200 page_size => $ON_PAGE,
201 persist_vars => [
202 'rm',
203 "f$i", "v$i", "f".$i."_index",
204 'offset',
205 ],
206 debug => 1,
207 template => $tmpl,
208 );
209
210 return $pager->output;
211 }
212
213 1;

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