/[webpac]/branches/unesco/WebPac.pm
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Contents of /branches/unesco/WebPac.pm

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Revision 731 - (show annotations)
Thu Apr 13 19:47:32 2006 UTC (13 years, 8 months ago) by dpavlin
File size: 14615 byte(s)
updated branches to trunk

1 package WebPac;
2
3 use base 'CGI::Application';
4 use strict;
5
6 use HTML::FillInForm;
7 use SWISH::API;
8 use Text::Iconv;
9 use DBI;
10 use Config::IniFiles;
11 use Text::Unaccent;
12 use Data::Pageset;
13 use POSIX qw(locale_h);
14
15 use lib '..';
16 use index_DBI_filter;
17 use back2html;
18
19
20 # read global.conf configuration
21 my $cfg_global = new Config::IniFiles( -file => '../global.conf' ) || die "can't open 'global.conf'";
22
23 # configuration options from global.conf
24 my $TEMPLATE_PATH = $cfg_global->val('webpac', 'template_html') || die "need template_html in global.conf, section webpac";
25 my $CHARSET = $cfg_global->val('webpac', 'charset') || 'ISO-8859-1';
26 my $SWISH = $cfg_global->val('webpac', 'swish') || '/usr/bin/swish-e';
27 my $INDEX = $cfg_global->val('webpac', 'index') || die "need index in global.conf, section webpac";
28 my $MAX_HITS = $cfg_global->val('webpac', 'max_hits') || 0;
29 my $ON_PAGE =$cfg_global->val('webpac', 'on_page') || 10;
30 my $MIN_WILDCARD =$cfg_global->val('webpac', 'min_wildcard') || 1;
31 my $TEMPLATE =$cfg_global->val('webpac', 'template');
32 my $UNAC_FILTER =$cfg_global->val('global', 'my_unac_filter');
33 my $BASE_PATH =$cfg_global->val('webpac', 'base_path');
34 # for pager
35 my $pages_per_set = $cfg_global->val('webpac', 'pages_per_set') || 10;
36 my $locale = $cfg_global->val('locale') || 'hr_HR';
37
38 Text::Iconv->raise_error(0); # Conversion errors raise exceptions
39
40 my $from_utf8 = Text::Iconv->new('UTF8', $CHARSET);
41
42 setlocale(LC_CTYPE, $locale);
43 setlocale(LC_COLLATE, $locale);
44
45 if ($UNAC_FILTER) {
46 require $UNAC_FILTER;
47 } else {
48 sub WebPac::my_unac_string {
49 my ($charset, $string) = (@_);
50 return $string;
51 }
52 }
53
54 # use path from cgi script to support templates in subdirs
55 sub url_ex {
56 my $q = shift || die "suff2file needs CGI object!";
57 my $tpl = shift || die "url_ex needs template name!";
58 return suff2file($BASE_PATH, $q->url(-absolute => 1,-path => 1),$TEMPLATE_PATH,$tpl);
59 }
60
61 sub suff2file($$$$) {
62 my ($base_path, $p, $path, $tpl) = @_;
63
64 return $tpl if (! $base_path);
65
66 # strip everything to and including base path, leaving only
67 # additional (virtual) path
68 if ($base_path eq "/") {
69 $p =~ s,/*,,g;
70 my ($name,$ext) = split(/\./,$tpl);
71 $p = $name . "-" . $p . "." . $ext;
72 } elsif ($p =~ s,^.*?$base_path,,) {
73 $p =~ s,/*,,g;
74 my ($name,$ext) = split(/\./,$tpl);
75 $p = $name . $p . "." . $ext;
76 } else {
77 # if unable reset it!
78 $p = $tpl;
79 }
80
81 if ( -e "$path/$p") {
82 return $p;
83 } else {
84 return $tpl;
85 }
86
87 }
88
89 sub setup {
90 my $self = shift;
91 $self->tmpl_path($TEMPLATE_PATH);
92 $self->run_modes(
93 'search' => 'show_search_form',
94 'results' => 'show_results_list',
95 # 'user' => 'show_user_detail',
96 'index' => 'show_index',
97 );
98 $self->start_mode('search');
99 $self->mode_param('rm');
100
101 $self->header_props(-charset=>$CHARSET);
102 }
103
104 sub in_template {
105 my $q = shift || die "need CGI object!";
106 my $html = shift || die "This page is left unintentionally blank";
107 return $html if (! defined($TEMPLATE));
108
109 my ($dir,$tpl);
110 if ($TEMPLATE =~ m,^(.*?/*)([^/]+)$,) {
111 ($dir,$tpl) = ($1,$2);
112 } else {
113 die "can't parse TEMPLATE path";
114 }
115
116 my $master_tpl = suff2file($BASE_PATH, $q->url(-absolute => 1, -path => 1),$dir,$tpl);
117 if (open(T, $master_tpl)) {
118 my $template_html = join("\n",<T>);
119 close(T);
120 $template_html =~ s/##webpac##/$html/gsi;
121 return $template_html;
122 } else {
123 return "Can't read template '$master_tpl'";
124 }
125 }
126
127 #--------------------------------------------------------------------------
128
129 #
130 # make pager navigation and fill template variables
131 # compatibile with HTML::Pager
132 #
133
134 sub make_pager($$$) {
135 my ($q,$tmpl,$pager) = @_;
136
137 #
138 # pager navigation
139 #
140 my ($pager_prev,$pager_next, $pager_jump) = ('','','');
141
142 my $nav_fmt=qq{ <a href="%s">%s</a> };
143
144 if ($pager->current_page() > $pager->first_page) {
145 $q->param('PAGER_offset', $pager->current_page - 1);
146 $pager_prev .= sprintf($nav_fmt,$q->url(-relative=>1, -query=>1),'&lt;&lt;');
147 }
148
149 if ($pager->previous_set) {
150 $q->param('PAGER_offset', $pager->previous_set);
151 $pager_prev .= sprintf($nav_fmt,$q->url(-relative=>1, -query=>1),'..');
152 }
153
154
155 foreach my $p (@{$pager->pages_in_set()}) {
156 next if ($p <= 0);
157 if($p == $pager->current_page()) {
158 $pager_jump .= "<b>$p</b> ";
159 } else {
160 $q->param('PAGER_offset', $p);
161 $pager_jump .= sprintf($nav_fmt,$q->url(-relative=>1, -query=>1),$p);
162 }
163 }
164
165 if ($pager->next_set) {
166 $q->param('PAGER_offset', $pager->next_set);
167 $pager_next .= sprintf($nav_fmt,$q->url(-relative=>1, -query=>1),'..');
168 }
169
170 if ($pager->current_page() < $pager->last_page) {
171 $q->param('PAGER_offset', $pager->current_page + 1);
172 $pager_next .= sprintf($nav_fmt,$q->url(-relative=>1, -query=>1),'&gt;&gt;');
173 }
174
175 $tmpl->param('PAGER_PREV', $pager_prev);
176 $tmpl->param('PAGER_JUMP', $pager_jump);
177 $tmpl->param('PAGER_NEXT', $pager_next);
178
179 }
180
181 #
182 # put persisten variables in template
183 #
184
185 sub make_pager_vars {
186 my $q = shift @_;
187 my $tmpl = shift @_;
188 my @persist_vars = @_;
189 my $hidden_vars = '';
190 my $hidden_search = '';
191 foreach my $v (@persist_vars) {
192 foreach my $val ($q->param($v)) {
193 next if (! $val || $val eq '');
194 $val =~ s/"/&quot;/g;
195 $hidden_vars .= '<input type="hidden" name="'.$v.'" value="'.$val.'"/>'."\n";
196 $hidden_search .= '<input type="hidden" name="'.$v.'" value="'.$val.'"/>'."\n" if ($v ne "rm");
197 }
198 }
199
200 $tmpl->param('PAGER_HIDDEN', $hidden_vars);
201 $tmpl->param('SEARCH_HIDDEN', $hidden_search);
202 $tmpl->param('PAGER_JAVASCRIPT', qq#
203 <SCRIPT LANGUAGE="Javascript">
204 <!-- Begin
205 // dummy emulator for HTML::Pager templates
206 function PAGER_set_offset_and_submit() {
207 return true;
208 }
209 // End -->
210 </script>
211 #);
212 }
213
214 #--------------------------------------------------------------------------
215
216 sub show_search_form {
217 my $self = shift;
218
219 # Get the CGI.pm query object
220 my $q = $self->query();
221
222 my $tmpl = $self->load_tmpl(url_ex($q,'search.html'));
223 my $html = $tmpl->output;
224
225 my $fif = new HTML::FillInForm;
226
227 return in_template($q,$fif->fill(scalarref => \$html, fobject => $q,
228 target => 'search'));
229 }
230
231 sub show_results_list {
232 my $self = shift;
233
234 my $q = $self->query();
235
236 # submit was reset?
237 if ($q->param('reset')) {
238 $q->delete_all;
239 return $self->show_search_form();
240 }
241
242 # load template for this page
243
244 my @s_arr; # all queries are located here
245
246 my @path_arr = $q->param('path');
247 my $full = $q->param('full');
248
249 my @persist_vars = ( 'rm', 'persist_search' );
250 my $url_params = {
251 'rm' => 'results',
252 'show_full' => 1,
253 'last_PAGER_offset' => ($q->param('PAGER_offset') || 0),
254 };
255
256 my @persist_search_vars;
257 my $url_params_persist = {};
258 if ($q->param("persist_search")) {
259 @persist_search_vars = split(/\s*,\s*/, $q->param("persist_search"));
260 $url_params_persist->{'persist_search'} = $q->url_param("persist_search");
261 $url_params->{'persist_search'} = $q->url_param("persist_search");
262 }
263
264 # support parametars "f" and "v" for start
265 for(my $i = 0; $i <=30; $i++) {
266
267 $i = '' if ($i == 0);
268
269 return show_index($self, $i) if ($q->param("f".$i."_index"));
270
271 next if (! $q->param("v$i") || $q->param("v$i") eq '');
272 next if (! $q->param("f$i"));
273
274 my $persist = grep(/^$i$/,@persist_search_vars);
275
276 push @persist_vars, "f$i";
277 push @persist_vars, "v$i";
278 push @persist_vars, "e$i" if ($q->param("e$i"));
279
280 # create url parametars (and persistent ones)
281
282 $url_params->{"f$i"} = $q->url_param("f$i");
283 $url_params_persist->{"f$i"} = $q->url_param("f$i") if ($persist);
284
285 my @v;
286
287 foreach my $v ($q->url_param("v$i")) {
288 # escape quotes so that phrase search work
289 $v =~ s/"/%22/g;
290 push @v, $v;
291 }
292 $url_params->{"v$i"} = \@v;
293 $url_params_persist->{"v$i"} = \@v if ($persist);
294
295 if ($q->param("e$i")) {
296 $url_params->{"e$i"} = $q->url_param("e$i");
297 # $url_params_persist->{"e$i"} = $q->url_param("e$i");
298 }
299
300 my $wc="*"; # swish wildcard
301 $wc="" if ($i eq ""); # don't apply wildcard on field 0
302
303 # re-write query from +/- to and/and not
304 my @param_vals = $q->param("v$i");
305 my @swish_q;
306 my ($pre,$post,$exact) = ('','','');
307 while (my $search = shift @param_vals) {
308 my $s;
309 # remove accents
310 $search = my_unac_string($CHARSET,$search);
311 while ($search =~ s/\s*("[^"]+")\s*/ /) {
312 $s .= "$1 ";
313 }
314 $search =~ s/^\s+//;
315 $search =~ s/\s+$//;
316
317 # filed e[nr] is exact match bitmask
318 # 1 = beginning, 2=end, 3=both
319 my $exact_flag = $q->param("e$i") || 0;
320 $pre = '"xxbxx ' if ($exact_flag & 1);
321 $post = ' xxexx"' if ($exact_flag & 2);
322 # add qotes on other side
323 if ($q->param("e$i")) {
324 $pre = '"' if (! $pre);
325 $post = '"' if (! $post);
326 # what about wildcards?
327 $wc = '';
328 $wc = '*' if ($q->param("e$i") & 4);
329 $exact = '_exact';
330 }
331
332 foreach (split(/\s+/,$search)) {
333 if (m/^([+-])(\S+)/) {
334 $s.= ($s) ? "and " : "";
335 $s.="not " if ($1 eq "-");
336 $s.=$2.$wc." ";
337 } elsif (m/^\s*(and|or|not)\s*$/i) {
338 $s.=$_." ";
339 # don't add * to words with less than x chars
340 } elsif (length($_) <= $MIN_WILDCARD) {
341 $s.=$_." ";
342 } else {
343 $s.=$_.$wc." ";
344 }
345 }
346 $s =~ s/\*+/*/g;
347 $s =~ s/[()]//g; # () are used in query language
348 $s = $pre.$s.$post if ($q->param("e$i"));
349 push @swish_q,$s;
350 }
351 # FIXME default operator for multi-value fields is or. There is
352 # no way to change it, except here for now. Is there need?
353 push @s_arr, $q->param("f$i")."_swish".$exact."=(".join(" or ",@swish_q).")";
354 }
355
356 my $tmpl = $self->load_tmpl(url_ex($q,'results.html'), global_vars => 1, die_on_bad_params => 0);
357
358 sub esc_html {
359 my $html = shift;
360 $html =~ s/</&lt;/g;
361 $html =~ s/>/&gt;/g;
362 return $html;
363 }
364
365 my $sort = 'swishrank';
366 if ($q->param("sort")) {
367 $sort = 'headline';
368 push @persist_vars, "sort";
369 }
370
371 my $sortby = $q->param("sortby");
372 if ($sortby) {
373 $sort = $sortby;
374 push @persist_vars, "sortby";
375 }
376 # used to filter entries in index and swish
377 my $filter = $q->param("filter");
378
379 # construct swish query
380 my $sw_q = join(" and ",@s_arr);
381 if (@path_arr && $q->param('show_full')) {
382 $sw_q .= " and (swishdocpath=\"";
383 $sw_q .= join("\" or swishdocpath=\"",@path_arr);
384 $sw_q .= "\")";
385 $tmpl->param('full',1); # show full records
386 # } elsif (@path_arr && $#path_arr == 0) {
387 # # I will assume that it's a filter since there isn't show_full
388 # $filter = shift @path_arr;
389 } elsif ($q->param('show_full')) {
390 # just show full path, no path defined
391 $tmpl->param('full',1);
392 } else {
393 $tmpl->param('full',0);
394 }
395
396 if ($filter) {
397 $sw_q .= " and (swishdocpath=\"$filter\")" unless (@path_arr);
398 push @persist_vars, "filter";
399 $url_params->{'filter'} = $filter;
400 $url_params_persist->{'filter'} = $filter;
401 }
402
403 my $swish_msg = ' ';
404
405 # create new swish instance
406 my $swish = SWISH::API->new($INDEX);
407 $swish_msg .= $swish->ErrorString." ".$swish->LastErrorMsg if $swish->Error;
408
409 # execute query and get number of results from SWISH-E
410 my $search = $swish->New_Search_Object;
411
412 $search->SetSort($sort);
413
414 my $results = $search->Execute($sw_q);
415 $swish_msg .= $swish->ErrorString." ".$swish->LastErrorMsg if $swish->Error;
416
417 my $hits = $results->Hits;
418
419 $tmpl->param('hits',$hits);
420 my $search_msg = $sw_q;
421 $search_msg .= '<em>'.$swish_msg.'</em>' if ($swish_msg);
422 $tmpl->param('search', $search_msg);
423
424 $tmpl->param('PAGER_offset',$q->param("PAGER_offset") || 0);
425 $tmpl->param('last_PAGER_offset',$q->param("last_PAGER_offset") || 0);
426
427 # URL parametars for search results
428 sub cook_url_params {
429 my $hash = shift || return;
430 return join("&", map {
431 my $var = $_;
432 if (ref($hash->{$var}) eq 'ARRAY') {
433 join('&',
434 map { $var.'='.$_ } @{$hash->{$var}}
435 );
436 } else {
437 $var."=".$hash->{$var};
438 }
439 } keys %{$hash});
440 }
441
442 $tmpl->param('url_params',"?".cook_url_params($url_params));
443 $tmpl->param('url_params_paths',"?".cook_url_params($url_params).'&'.join("&",map { my $t = $_; $t =~ s/\#/%23/g; "path=$t"; } @path_arr));
444
445
446
447 #
448 # build pager
449 #
450
451 my $current_page = $q->param('PAGER_offset') || 1;
452
453 my $pager = Data::Pageset->new({
454 'total_entries' => $hits,
455 'entries_per_page' => $ON_PAGE,
456 'current_page' => $current_page,
457 'pages_per_set' => $pages_per_set,
458 });
459
460 $results->SeekResult( $pager->first - 1 );
461
462 # get number of entries on this page
463 my $i = $pager->entries_on_this_page;
464
465 # results from swish for template
466 my @pager_data_list;
467
468 for(my $i=$pager->first; $i<=$pager->last; $i++) {
469
470 my $result = $results->NextResult;
471 last if (! $result);
472
473 my $r = {
474 nr => $i,
475 path => $result->Property('swishdocpath'),
476 headline => esc_html($from_utf8->convert($result->Property('headline'))),
477 rank => $result->Property('swishrank')
478 };
479
480 #$r->{html} = back2html($from_utf8->convert($result->Property('html')), cook_url_params($url_params_persist)) if ($q->param('show_full'));
481 $r->{html} = back2html($from_utf8->convert($result->Property('html')), $filter ? 'filter='.$filter : '') if ($q->param('show_full'));
482
483 push @pager_data_list, $r;
484 }
485
486
487
488 # put something in template
489 make_pager($q, $tmpl, $pager);
490 make_pager_vars($q, $tmpl, @persist_vars);
491 $tmpl->param('PAGER_DATA_LIST', \@pager_data_list);
492
493 my $html = $tmpl->output;
494
495 return in_template($q,$html);
496 }
497
498 sub show_index {
499 my $self = shift;
500 my $i = shift; # field number
501
502 my $q = $self->query();
503
504 my $field = $q->param("f$i");
505 my $limit = $q->param("v$i");
506
507 my $filter = $q->param("filter");
508
509 my $html;
510
511 my $index = new index_DBI(
512 $cfg_global->val('global', 'dbi_dbd'),
513 $cfg_global->val('global', 'dbi_dsn'),
514 $cfg_global->val('global', 'dbi_user'),
515 $cfg_global->val('global', 'dbi_passwd') || ''
516 );
517
518 my $total = $index->count($field,$limit,$filter);
519
520 if (! defined($total)) {
521 my $tmpl = $self->load_tmpl(url_ex($q,'no_index.html'));
522 $tmpl->param('field',$field);
523 $html = $tmpl->output;
524 return $html;
525 }
526
527 my $tmpl = $self->load_tmpl(url_ex($q,'index_res.html'), global_vars => 1, die_on_bad_params => 0);
528 $tmpl->param('field',$field);
529 $tmpl->param('limit',$limit);
530 $tmpl->param('total',$total);
531 $tmpl->param('filter',$filter);
532
533 # FIXME I should set offset and leave out limit from fetch!!
534 # if (! $q->param("PAGER_offset") {
535 # $q->param("Pager_offet)
536 # }
537
538
539 #
540 # build pager
541 #
542 my $pager = Data::Pageset->new({
543 'total_entries' => $total,
544 'entries_per_page' => $ON_PAGE,
545 'current_page' => $q->param('PAGER_offset') || 1,
546 'pages_per_set' => $pages_per_set
547 });
548
549 my @persist_vars = qw{rm f$i v$i f$i_index offset};
550
551 make_pager($q, $tmpl, $pager);
552 make_pager_vars($q, $tmpl, @persist_vars);
553
554 my @pager_data_list = $index->fetch($field,$limit, $pager->first - 1, $pager->entries_on_this_page, $filter);
555 $tmpl->param('PAGER_DATA_LIST', \@pager_data_list);
556
557 return in_template($q,$tmpl->output);
558 }
559
560 1;

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