/[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 164 - (show annotations)
Sat Nov 22 22:04:05 2003 UTC (16 years ago) by dpavlin
File size: 7902 byte(s)
implemented filter which can replace (or be used together with) unac_string
from Text::Unaccent

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 use Config::IniFiles;
12 use Text::Unaccent;
13
14 use lib '..';
15 use index_DBI_cache;
16 use back2html;
17
18
19 # read global.conf configuration
20 my $cfg_global = new Config::IniFiles( -file => '../global.conf' ) || die "can't open 'global.conf'";
21
22 # configuration options from global.conf
23 my $TEMPLATE_PATH = $cfg_global->val('webpac', 'template_html') || die "need template_html in global.conf, section webpac";
24 my $CHARSET = $cfg_global->val('webpac', 'charset') || 'ISO-8859-1';
25 my $SWISH = $cfg_global->val('webpac', 'swish') || '/usr/bin/swish-e';
26 my $INDEX = $cfg_global->val('webpac', 'index') || die "need index in global.conf, section webpac";
27 my $MAX_HITS = $cfg_global->val('webpac', 'max_hits') || 0;
28 my $ON_PAGE =$cfg_global->val('webpac', 'on_page') || 10;
29 my $MIN_WILDCARD =$cfg_global->val('webpac', 'min_wildcard') || 1;
30 my $TEMPLATE =$cfg_global->val('webpac', 'template');
31 my $UNAC_FILTER =$cfg_global->val('global', 'unac_filter');
32
33 if ($UNAC_FILTER) {
34 require $UNAC_FILTER;
35 }
36
37 Text::Iconv->raise_error(0); # Conversion errors raise exceptions
38
39 my $from_utf8 = Text::Iconv->new('UTF8', $CHARSET);
40
41
42 sub setup {
43 my $self = shift;
44 $self->tmpl_path($TEMPLATE_PATH);
45 $self->run_modes(
46 'search' => 'show_search_form',
47 'results' => 'show_results_list',
48 # 'user' => 'show_user_detail',
49 'index' => 'show_index',
50 );
51 $self->start_mode('search');
52 $self->mode_param('rm');
53
54 $self->header_props(-charset=>$CHARSET);
55 }
56
57 sub in_template {
58 my $html = shift || "This page is left unintentionally blank";
59 return $html if (! defined($TEMPLATE));
60 if (open(T, $TEMPLATE)) {
61 my $template_html = join("\n",<T>);
62 close(T);
63 $template_html =~ s/##webpac##/$html/gsi;
64 return $template_html;
65 } else {
66 return "Can't read template '$TEMPLATE'";
67 }
68 }
69
70 sub show_search_form {
71 my $self = shift;
72
73 # Get the CGI.pm query object
74 my $q = $self->query();
75
76 my $tmpl = $self->load_tmpl('search.html');
77 my $html = $tmpl->output;
78
79 my $fif = new HTML::FillInForm;
80
81 return in_template($fif->fill(scalarref => \$html, fobject => $q,
82 target => 'search'));
83 }
84
85 sub show_results_list {
86 my $self = shift;
87
88 my $q = $self->query();
89
90 my @swish_results; # results from swish
91
92 # load template for this page
93
94 my @s_arr; # all queries are located here
95
96 my @path_arr = $q->param('path');
97 my $full = $q->param('full');
98
99 my @persist_vars = ( 'rm' );
100 my @url_params = ( 'rm=results', 'show_full=1', 'last_PAGER_offset='.$q->param('PAGER_offset') || 0 );
101
102 # support parametars "f" and "v" for start
103 for(my $i = ""; $i <=30; $i++) {
104
105 return show_index($self, $i) if ($q->param("f".$i."_index"));
106
107 next if (! $q->param("v$i"));
108 next if (! $q->param("f$i"));
109
110 push @persist_vars, "f$i";
111 push @persist_vars, "v$i";
112
113 push @url_params,"f$i=".$q->url_param("f$i");
114 foreach my $v ($q->url_param("v$i")) {
115 push @url_params,"v$i=$v";
116 }
117
118 my $wc="*"; # swish wildcard
119 $wc="" if ($i eq ""); # don't apply wildcard on field 0
120
121 # re-write query from +/- to and/and not
122 my @param_vals = $q->param("v$i");
123 my @swish_q;
124 my ($pre,$post,$exact) = ('','','');
125 while (my $search = shift @param_vals) {
126 my $s;
127 # remove accents
128 $search = unac_string($CHARSET,$search);
129 while ($search =~ s/\s*("[^"]+")\s*/ /) {
130 $s .= "$1 ";
131 }
132 $search =~ s/^\s+//;
133 $search =~ s/\s+$//;
134
135 # filed e[nr] is exact match bitmask
136 # 1 = beginning, 2=end, 3=both
137 $pre = '"xxbxx ' if ($q->param("e$i") & 1);
138 $post = ' xxexx"' if ($q->param("e$i") & 2);
139 # add qotes on other side
140 if ($q->param("e$i")) {
141 $pre = '"' if (! $pre);
142 $post = '"' if (! $post);
143 $wc = ''; # don't use windcard in exact
144 $exact = '_exact';
145 }
146
147 foreach (split(/\s+/,$search)) {
148 if (m/^([+-])(\S+)/) {
149 $s.= ($s) ? "and " : "";
150 $s.="not " if ($1 eq "-");
151 $s.=$2.$wc." ";
152 } elsif (m/^\s*(and|or|not)\s*$/i) {
153 $s.=$_." ";
154 # don't add * to words with less than x chars
155 } elsif (length($_) <= $MIN_WILDCARD) {
156 $s.=$_." ";
157 } else {
158 $s.=$_.$wc." ";
159 }
160 }
161 $s =~ s/\*+/*/g;
162 $s = $pre.$s.$post if ($q->param("e$i"));
163 push @swish_q,$s;
164 }
165 # FIXME default operator for multi-value fields is or. There is
166 # no way to change it, except here for now. Is there need?
167 push @s_arr, $q->param("f$i")."_swish".$exact."=(".join(" or ",@swish_q).")";
168 }
169
170 my $tmpl = $self->load_tmpl('results.html', global_vars => 1);
171
172 sub esc_html {
173 my $html = shift;
174 $html =~ s/</&lt;/g;
175 $html =~ s/>/&gt;/g;
176 return $html;
177 }
178
179 # call swish
180 my $sh = SWISH->connect('Fork',
181 prog => $SWISH,
182 indexes => $INDEX,
183 properties => [qw/swishdocpath swishrank swishtitle headline html/],
184 results => sub {
185 my ($sh,$hit) = @_;
186
187 push @swish_results, {
188 nr => ($#swish_results + 2),
189 path => $hit->swishdocpath,
190 headline => esc_html($from_utf8->convert($hit->headline)),
191 html => back2html($from_utf8->convert($hit->html)),
192 rank => $hit->swishrank };
193
194 },
195 #startnum => 0,
196 maxhits => $MAX_HITS
197 );
198
199 die $SWISH::errstr unless $sh;
200 # construct swish query
201 my $sw_q = join(" and ",@s_arr);
202 if (@path_arr && $q->param('show_full')) {
203 $sw_q .= "and (swishdocpath=\"";
204 $sw_q .= join("\" or swishdocpath=\"",@path_arr);
205 $sw_q .= "\")";
206 $tmpl->param('full',1); # show full records
207 } elsif ($q->param('show_full')) {
208 # just show full path, no path defined
209 $tmpl->param('full',1);
210 } else {
211 $tmpl->param('full',0);
212 }
213
214 my $hits = $sh->query($sw_q);
215
216 $tmpl->param('hits',$hits);
217 $tmpl->param('search',$sw_q);
218
219 $tmpl->param('PAGER_offset',$q->param("PAGER_offset") || 0);
220 $tmpl->param('last_PAGER_offset',$q->param("last_PAGER_offset") || 0);
221
222 $tmpl->param('url_params',"?".join("&",@url_params));
223
224 # create a Pager object
225 my $pager = HTML::Pager->new(
226 # required parameters
227 query => $q,
228 get_data_callback => sub {
229 my ($offset, $rows) = @_;
230
231 my @result;
232 for (my $i=0; $i<$rows; $i++) {
233 my $r = $swish_results[$offset+$i];
234 if ($r && $tmpl->param('full')) {
235 push @result, $r;
236 } elsif ($r) {
237 # if not full output, skip html
238 delete $r->{html};
239 push @result, $r;
240 }
241 }
242 return \@result;
243 },
244 rows => $hits,
245 page_size => $ON_PAGE,
246 # some optional parameters
247 persist_vars => [ @persist_vars ],
248 #cell_space_color => '#000000',
249 #cell_background_color => '#ffffff',
250 #nav_background_color => '#dddddd',
251 #javascript_presubmit => 'last_minute_javascript()',
252 debug => 1,
253 template => $tmpl,
254 );
255
256 my $html = $pager->output;
257
258 return in_template($html);
259 }
260
261 sub show_index {
262 my $self = shift;
263 my $i = shift; # field number
264
265 my $q = $self->query();
266
267 my $field = $q->param("f$i");
268 my $limit = $q->param("v$i");
269
270 my $html;
271
272 my $index = new index_DBI(
273 $cfg_global->val('global', 'dbi_dbd'),
274 $cfg_global->val('global', 'dbi_dsn'),
275 $cfg_global->val('global', 'dbi_user'),
276 $cfg_global->val('global', 'dbi_passwd') || ''
277 );
278
279 my $total = $index->count($field,$limit);
280 if (! $total) {
281 my $tmpl = $self->load_tmpl('no_index.html');
282 $tmpl->param('field',$field);
283 $html = $tmpl->output;
284 return $html;
285 }
286
287 my $tmpl = $self->load_tmpl('index_res.html', global_vars => 1);
288 $tmpl->param('field',$field);
289 $tmpl->param('limit',$limit);
290 $tmpl->param('total',$total);
291
292 # FIXME I should set offset and leave out limit from fetch!!
293 # if (! $q->param("PAGER_offset") {
294 # $q->param("Pager_offet)
295 # }
296
297 my $pager = HTML::Pager->new(
298 query => $q,
299 get_data_callback => sub {
300 my ($offset, $rows) = @_;
301
302 my @result = $index->fetch($field,$limit, $offset, $rows);
303 return \@result;
304 },
305 rows => $total,
306 page_size => $ON_PAGE,
307 persist_vars => [
308 'rm',
309 "f$i", "v$i", "f".$i."_index",
310 'offset',
311 ],
312 debug => 1,
313 template => $tmpl,
314 );
315
316 return in_template($pager->output);
317 }
318
319 1;

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