/[webpac]/branches/humanistika/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 /branches/humanistika/WebPac.pm

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Revision 303 - (show annotations)
Sun Apr 4 22:11:13 2004 UTC (15 years, 8 months ago) by dpavlin
File size: 9368 byte(s)
updated branches to HEAD

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 my $BASE_PATH =$cfg_global->val('webpac', 'base_path');
33
34 if ($UNAC_FILTER) {
35 require $UNAC_FILTER;
36 }
37
38 Text::Iconv->raise_error(0); # Conversion errors raise exceptions
39
40 my $from_utf8 = Text::Iconv->new('UTF8', $CHARSET);
41
42 # use path from cgi script to support templates in subdirs
43 sub url_ex {
44 my $q = shift || die "suff2file needs CGI object!";
45 my $tpl = shift || die "url_ex needs template name!";
46 return suff2file($BASE_PATH, $q->url(-absolute => 1,-path => 1),$TEMPLATE_PATH,$tpl);
47 }
48
49 sub suff2file($$$$) {
50 my ($base_path, $p, $path, $tpl) = @_;
51
52 return $tpl if (! $base_path);
53
54 # strip everything to and including base path, leaving only
55 # additional (virtual) path
56 if ($base_path eq "/") {
57 $p =~ s,/*,,g;
58 my ($name,$ext) = split(/\./,$tpl);
59 $p = $name . "-" . $p . "." . $ext;
60 } elsif ($p =~ s,^.*?$base_path,,) {
61 $p =~ s,/*,,g;
62 my ($name,$ext) = split(/\./,$tpl);
63 $p = $name . $p . "." . $ext;
64 } else {
65 # if unable reset it!
66 $p = $tpl;
67 }
68
69 if ( -e "$path/$p") {
70 return $p;
71 } else {
72 return $tpl;
73 }
74
75 }
76
77 sub setup {
78 my $self = shift;
79 $self->tmpl_path($TEMPLATE_PATH);
80 $self->run_modes(
81 'search' => 'show_search_form',
82 'results' => 'show_results_list',
83 # 'user' => 'show_user_detail',
84 'index' => 'show_index',
85 );
86 $self->start_mode('search');
87 $self->mode_param('rm');
88
89 $self->header_props(-charset=>$CHARSET);
90 }
91
92 sub in_template {
93 my $q = shift || die "need CGI object!";
94 my $html = shift || die "This page is left unintentionally blank";
95 return $html if (! defined($TEMPLATE));
96
97 my ($dir,$tpl);
98 if ($TEMPLATE =~ m,^(.*?/*)([^/]+)$,) {
99 ($dir,$tpl) = ($1,$2);
100 } else {
101 die "can't parse TEMPLATE path";
102 }
103
104 my $master_tpl = suff2file($BASE_PATH, $q->url(-absolute => 1, -path => 1),$dir,$tpl);
105 if (open(T, $master_tpl)) {
106 my $template_html = join("\n",<T>);
107 close(T);
108 $template_html =~ s/##webpac##/$html/gsi;
109 return $template_html;
110 } else {
111 return "Can't read template '$master_tpl'";
112 }
113 }
114
115 sub show_search_form {
116 my $self = shift;
117
118 # Get the CGI.pm query object
119 my $q = $self->query();
120
121 my $tmpl = $self->load_tmpl(url_ex($q,'search.html'));
122 my $html = $tmpl->output;
123
124 my $fif = new HTML::FillInForm;
125
126 return in_template($q,$fif->fill(scalarref => \$html, fobject => $q,
127 target => 'search'));
128 }
129
130 sub show_results_list {
131 my $self = shift;
132
133 my $q = $self->query();
134
135 my @swish_results; # results from swish
136
137 # load template for this page
138
139 my @s_arr; # all queries are located here
140
141 my @path_arr = $q->param('path');
142 my $full = $q->param('full');
143
144 my @persist_vars = ( 'rm' );
145 my @url_params = ( 'rm=results', 'show_full=1', 'last_PAGER_offset='.$q->param('PAGER_offset') || 0 );
146
147 # support parametars "f" and "v" for start
148 for(my $i = ""; $i <=30; $i++) {
149
150 return show_index($self, $i) if ($q->param("f".$i."_index"));
151
152 next if (! $q->param("v$i"));
153 next if (! $q->param("f$i"));
154
155 push @persist_vars, "f$i";
156 push @persist_vars, "v$i";
157 push @persist_vars, "e$i" if ($q->param("e$i"));
158
159 push @url_params,"f$i=".$q->url_param("f$i");
160 foreach my $v ($q->url_param("v$i")) {
161 push @url_params,"v$i=$v";
162 }
163 push @url_params,"e$i=".$q->url_param("e$i");
164
165 my $wc="*"; # swish wildcard
166 $wc="" if ($i eq ""); # don't apply wildcard on field 0
167
168 # re-write query from +/- to and/and not
169 my @param_vals = $q->param("v$i");
170 my @swish_q;
171 my ($pre,$post,$exact) = ('','','');
172 while (my $search = shift @param_vals) {
173 my $s;
174 # remove accents
175 $search = unac_string($CHARSET,$search);
176 while ($search =~ s/\s*("[^"]+")\s*/ /) {
177 $s .= "$1 ";
178 }
179 $search =~ s/^\s+//;
180 $search =~ s/\s+$//;
181
182 # filed e[nr] is exact match bitmask
183 # 1 = beginning, 2=end, 3=both
184 $pre = '"xxbxx ' if ($q->param("e$i") & 1);
185 $post = ' xxexx"' if ($q->param("e$i") & 2);
186 # add qotes on other side
187 if ($q->param("e$i")) {
188 $pre = '"' if (! $pre);
189 $post = '"' if (! $post);
190 # what about wildcards?
191 $wc = '';
192 $wc = '*' if ($q->param("e$i") & 4);
193 $exact = '_exact';
194 }
195
196 foreach (split(/\s+/,$search)) {
197 if (m/^([+-])(\S+)/) {
198 $s.= ($s) ? "and " : "";
199 $s.="not " if ($1 eq "-");
200 $s.=$2.$wc." ";
201 } elsif (m/^\s*(and|or|not)\s*$/i) {
202 $s.=$_." ";
203 # don't add * to words with less than x chars
204 } elsif (length($_) <= $MIN_WILDCARD) {
205 $s.=$_." ";
206 } else {
207 $s.=$_.$wc." ";
208 }
209 }
210 $s =~ s/\*+/*/g;
211 $s = $pre.$s.$post if ($q->param("e$i"));
212 push @swish_q,$s;
213 }
214 # FIXME default operator for multi-value fields is or. There is
215 # no way to change it, except here for now. Is there need?
216 push @s_arr, $q->param("f$i")."_swish".$exact."=(".join(" or ",@swish_q).")";
217 }
218
219 my $tmpl = $self->load_tmpl(url_ex($q,'results.html'), global_vars => 1);
220
221 sub esc_html {
222 my $html = shift;
223 $html =~ s/</&lt;/g;
224 $html =~ s/>/&gt;/g;
225 return $html;
226 }
227
228 my $sort = 'swishrank';
229 if ($q->param("sort")) {
230 $sort = 'headline';
231 push @persist_vars, "sort";
232 }
233
234 # call swish
235 my $sh = SWISH->connect('Fork',
236 prog => $SWISH,
237 indexes => $INDEX,
238 properties => [qw/swishdocpath swishrank swishtitle headline html/],
239 results => sub {
240 my ($sh,$hit) = @_;
241
242 push @swish_results, {
243 nr => ($#swish_results + 2),
244 path => $hit->swishdocpath,
245 headline => esc_html($from_utf8->convert($hit->headline)),
246 html => back2html($from_utf8->convert($hit->html)),
247 rank => $hit->swishrank };
248
249 },
250 #startnum => 0,
251 maxhits => $MAX_HITS,
252 sortorder => $sort,
253 );
254
255 die $SWISH::errstr unless $sh;
256 # construct swish query
257 my $sw_q = join(" and ",@s_arr);
258 if (@path_arr && $q->param('show_full')) {
259 $sw_q .= "and (swishdocpath=\"";
260 $sw_q .= join("\" or swishdocpath=\"",@path_arr);
261 $sw_q .= "\")";
262 $tmpl->param('full',1); # show full records
263 } elsif ($q->param('show_full')) {
264 # just show full path, no path defined
265 $tmpl->param('full',1);
266 } else {
267 $tmpl->param('full',0);
268 }
269
270 my $hits = $sh->query($sw_q);
271
272 $tmpl->param('hits',$hits);
273 $tmpl->param('search',$sw_q);
274
275 $tmpl->param('PAGER_offset',$q->param("PAGER_offset") || 0);
276 $tmpl->param('last_PAGER_offset',$q->param("last_PAGER_offset") || 0);
277
278 $tmpl->param('url_params',"?".join("&",@url_params));
279
280 # create a Pager object
281 my $pager = HTML::Pager->new(
282 # required parameters
283 query => $q,
284 get_data_callback => sub {
285 my ($offset, $rows) = @_;
286
287 my @result;
288 for (my $i=0; $i<$rows; $i++) {
289 my $r = $swish_results[$offset+$i];
290 if ($r && $tmpl->param('full')) {
291 push @result, $r;
292 } elsif ($r) {
293 # if not full output, skip html
294 delete $r->{html};
295 push @result, $r;
296 }
297 }
298 return \@result;
299 },
300 rows => $hits,
301 page_size => $ON_PAGE,
302 # some optional parameters
303 persist_vars => [ @persist_vars ],
304 #cell_space_color => '#000000',
305 #cell_background_color => '#ffffff',
306 #nav_background_color => '#dddddd',
307 #javascript_presubmit => 'last_minute_javascript()',
308 debug => 1,
309 template => $tmpl,
310 );
311
312 my $html = $pager->output;
313
314 return in_template($q,$html);
315 }
316
317 sub show_index {
318 my $self = shift;
319 my $i = shift; # field number
320
321 my $q = $self->query();
322
323 my $field = $q->param("f$i");
324 my $limit = $q->param("v$i");
325
326 my $html;
327
328 my $index = new index_DBI(
329 $cfg_global->val('global', 'dbi_dbd'),
330 $cfg_global->val('global', 'dbi_dsn'),
331 $cfg_global->val('global', 'dbi_user'),
332 $cfg_global->val('global', 'dbi_passwd') || ''
333 );
334
335 my $total = $index->count($field,$limit);
336 if (! $total) {
337 my $tmpl = $self->load_tmpl(url_ex($q,'no_index.html'));
338 $tmpl->param('field',$field);
339 $html = $tmpl->output;
340 return $html;
341 }
342
343 my $tmpl = $self->load_tmpl(url_ex($q,'index_res.html'), global_vars => 1);
344 $tmpl->param('field',$field);
345 $tmpl->param('limit',$limit);
346 $tmpl->param('total',$total);
347
348 # FIXME I should set offset and leave out limit from fetch!!
349 # if (! $q->param("PAGER_offset") {
350 # $q->param("Pager_offet)
351 # }
352
353 my $pager = HTML::Pager->new(
354 query => $q,
355 get_data_callback => sub {
356 my ($offset, $rows) = @_;
357
358 my @result = $index->fetch($field,$limit, $offset, $rows);
359 return \@result;
360 },
361 rows => $total,
362 page_size => $ON_PAGE,
363 persist_vars => [
364 'rm',
365 "f$i", "v$i", "f".$i."_index",
366 'offset',
367 ],
368 debug => 1,
369 template => $tmpl,
370 );
371
372 return in_template($q,$pager->output);
373 }
374
375 1;

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