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

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Revision 684 - (show annotations)
Mon Feb 28 10:43:38 2005 UTC (14 years, 10 months ago) by dpavlin
File size: 13441 byte(s)
updated branches to head

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

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