/[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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Revision 16 - (show annotations)
Sat Feb 22 21:21:35 2003 UTC (16 years, 9 months ago) by dpavlin
File size: 4539 byte(s)
allows users to enter queries with asterisk (*)

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 Text::Iconv;
10 use DBI;
11
12 use lib '..';
13 use index_DBI;
14 use back2html;
15
16 # configuration options
17 # FIX: they really should go in configuration file!
18 my $TEMPLATE_PATH = '/data/webpac/template_html';
19 my $CHARSET = 'ISO-8859-2';
20 my $SWISH = '/usr/bin/swish-e';
21 my $INDEX = '/data/webpac/index/isis.index';
22 my $MAX_HITS = 500;
23 my $ON_PAGE = 10;
24
25 Text::Iconv->raise_error(1); # Conversion errors raise exceptions
26
27 my $from_utf8 = Text::Iconv->new('UTF8', $CHARSET);
28
29 sub setup {
30 my $self = shift;
31 $self->tmpl_path($TEMPLATE_PATH);
32 $self->run_modes(
33 'search' => 'show_search_form',
34 'results' => 'show_results_list',
35 # 'user' => 'show_user_detail',
36 'index' => 'show_index',
37 );
38 $self->start_mode('search');
39 $self->mode_param('rm');
40
41 $self->header_props(-charset=>$CHARSET);
42 }
43
44 sub show_search_form {
45 my $self = shift;
46
47 # Get the CGI.pm query object
48 my $q = $self->query();
49
50 my $tmpl = $self->load_tmpl('search.html');
51 my $html = $tmpl->output;
52
53 my $fif = new HTML::FillInForm;
54
55 return $fif->fill(scalarref => \$html, fobject => $q,
56 target => 'search');
57 }
58
59 sub show_results_list {
60 my $self = shift;
61
62 my $q = $self->query();
63
64 my @swish_results; # results from swish
65
66 # load template for this page
67
68 my @s_arr; # all queries are located here
69
70 for(my $i = 1; $i <=10; $i++) {
71
72 return show_index($self, $i) if ($q->param("f".$i."_index"));
73 next if (! $q->param("f$i"));
74 next if (! $q->param("v$i"));
75
76 # re-write query from +/- to and/and not
77 my $s;
78 my $search = $q->param("v$i");
79 while ($search =~ s/\s*("[^"]+")\s*/ /) {
80 $s .= "$1 ";
81 }
82 $search =~ s/^\s+//;
83 $search =~ s/\s+$//;
84
85 foreach (split(/\s+/,$search)) {
86 if (m/^([+-])(\S+)/) {
87 $s.= ($s) ? "and " : "";
88 $s.="not " if ($1 eq "-");
89 $s.="$2* ";
90 } else {
91 $s.="$_* ";
92 }
93 }
94 $s =~ s/\*+/*/g;
95
96 push @s_arr,$q->param("f$i")."_swish=($s)";
97 }
98
99 my $tmpl = $self->load_tmpl('results.html');
100
101 # call swish
102 my $sh = SWISH->connect('Fork',
103 prog => $SWISH,
104 indexes => $INDEX,
105 properties => [qw/swishdocpath swishrank swishtitle headline html/],
106 results => sub {
107 my ($sh,$hit) = @_;
108
109 push @swish_results, {
110 nr => ($#swish_results + 2),
111 path => $hit->swishdocpath,
112 headline => $from_utf8->convert($hit->headline),
113 html => back2html($from_utf8->convert($hit->html)),
114 rank => $hit->swishrank };
115
116 },
117 #startnum => 0,
118 maxhits => $MAX_HITS,
119 );
120
121 die $SWISH::errstr unless $sh;
122
123 my $hits = $sh->query(join(" and ",@s_arr)) || 0; # FIX: and/or
124
125 $tmpl->param('hits',$hits);
126 $tmpl->param('search',join(" and ",@s_arr));
127
128 # create a Pager object
129 my $pager = HTML::Pager->new(
130 # required parameters
131 query => $q,
132 get_data_callback => sub {
133 my ($offset, $rows) = @_;
134
135 my @result;
136 for (my $i=0; $i<$rows; $i++) {
137 push @result, $swish_results[$offset+$i] if $swish_results[$offset+$i];
138 }
139 return \@result;
140 },
141 rows => $hits,
142 page_size => $ON_PAGE,
143 # some optional parameters
144 persist_vars => [
145 'rm',
146 'f1', 'v1',
147 'f2', 'v2',
148 'f3', 'v3',
149 'f4', 'v4',
150 'f5', 'v5',
151 'f6', 'v6',
152 'f7', 'v7',
153 'f8', 'v8',
154 'f9', 'v9',
155 ],
156 #cell_space_color => '#000000',
157 #cell_background_color => '#ffffff',
158 #nav_background_color => '#dddddd',
159 #javascript_presubmit => 'last_minute_javascript()',
160 debug => 1,
161 template => $tmpl,
162 );
163
164 my $html = $pager->output;
165
166 return $html;
167 }
168
169 sub show_index {
170 my $self = shift;
171 my $i = shift; # field number
172
173 my $q = $self->query();
174
175 my $field = $q->param("f$i");
176 my $limit = $q->param("v$i");
177
178 my $html;
179
180 my $index = new index_DBI();
181
182 my $total = $index->check($field);
183 if (! $total) {
184 my $tmpl = $self->load_tmpl('no_index.html');
185 $tmpl->param('field',$field);
186 $html = $tmpl->output;
187 return $html;
188 }
189
190 my $tmpl = $self->load_tmpl('index_res.html');
191 $tmpl->param('field',$field);
192 $tmpl->param('limit',$limit);
193 $tmpl->param('total',$total);
194
195 # FIX: I should set offset and leave out limit from fetch!!
196 # if (! $q->param("PAGER_offset") {
197 # $q->param("Pager_offet)
198 # }
199
200 my $pager = HTML::Pager->new(
201 query => $q,
202 get_data_callback => sub {
203 my ($offset, $rows) = @_;
204
205 my @result = $index->fetch($field,'item',$limit, $offset, $rows);
206 return \@result;
207 },
208 rows => $total,
209 page_size => $ON_PAGE,
210 persist_vars => [
211 'rm',
212 "f$i", "v$i", "f".$i."_index",
213 'offset',
214 ],
215 debug => 1,
216 template => $tmpl,
217 );
218
219 return $pager->output;
220 }
221
222 1;

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