git.rot13.org Git - webpac/blob - WebPac.pm

   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=$v";
 116                 }
 117                 push @url_params,"e$i=".$q->url_param("e$i");
 118
 119                 my $wc="*";     # swish wildcard
 120                 $wc="" if ($i eq "");   # don't apply wildcard on field 0
 121
 122                 # re-write query from +/- to and/and not
 123                 my @param_vals = $q->param("v$i");
 124                 my @swish_q;
 125                 my ($pre,$post,$exact) = ('','','');
 126                 while (my $search = shift @param_vals) {
 127                         my $s;
 128                         # remove accents
 129                         $search = unac_string($CHARSET,$search);
 130                         while ($search =~ s/\s*("[^"]+")\s*/ /) {
 131                                 $s .= "$1 ";
 132                         }
 133                         $search =~ s/^\s+//;
 134                         $search =~ s/\s+$//;
 135
 136                         # filed e[nr] is exact match bitmask
 137                         # 1 = beginning, 2=end, 3=both
 138                         $pre = '"xxbxx ' if ($q->param("e$i") & 1);
 139                         $post = ' xxexx"' if ($q->param("e$i") & 2);
 140                         # add qotes on other side
 141                         if ($q->param("e$i")) {
 142                                 $pre = '"' if (! $pre);
 143                                 $post = '"' if (! $post);
 144                                 $wc = '';       # don't use windcard in exact
 145                                 $exact = '_exact';
 146                         }
 147
 148                         foreach (split(/\s+/,$search)) {
 149                                 if (m/^([+-])(\S+)/) {
 150                                         $s.= ($s) ? "and " : "";
 151                                         $s.="not " if ($1 eq "-");
 152                                         $s.=$2.$wc." ";
 153                                 } elsif (m/^\s*(and|or|not)\s*$/i) {
 154                                         $s.=$_." ";
 155                                 # don't add * to words with less than x chars
 156                                 } elsif (length($_) <= $MIN_WILDCARD) {
 157                                         $s.=$_." ";
 158                                 } else {
 159                                         $s.=$_.$wc." ";
 160                                 }
 161                         }
 162                         $s =~ s/\*+/*/g;
 163                         $s = $pre.$s.$post if ($q->param("e$i"));
 164                         push @swish_q,$s;
 165                 }
 166                 # FIXME default operator for multi-value fields is or. There is
 167                 # no way to change it, except here for now. Is there need?
 168                 push @s_arr, $q->param("f$i")."_swish".$exact."=(".join(" or ",@swish_q).")";
 169         }
 170
 171         my $tmpl = $self->load_tmpl('results.html', global_vars => 1);
 172
 173         sub esc_html {
 174                 my $html = shift;
 175                 $html =~ s/</&lt;/g;
 176                 $html =~ s/>/&gt;/g;
 177                 return $html;
 178         }
 179
 180         # call swish
 181         my $sh = SWISH->connect('Fork',
 182                 prog     => $SWISH,
 183                 indexes  => $INDEX,
 184                 properties  => [qw/swishdocpath swishrank swishtitle headline html/],
 185                 results  => sub {
 186                         my ($sh,$hit) = @_;
 187
 188                         push @swish_results, {
 189                                 nr => ($#swish_results + 2),
 190                                 path => $hit->swishdocpath,
 191                                 headline => esc_html($from_utf8->convert($hit->headline)),
 192                                 html => back2html($from_utf8->convert($hit->html)),
 193                                 rank => $hit->swishrank };
 194
 195                 },
 196                 #startnum => 0,
 197                 maxhits => $MAX_HITS
 198         );
 199
 200         die $SWISH::errstr unless $sh;
 201         # construct swish query
 202         my $sw_q = join(" and ",@s_arr);
 203         if (@path_arr && $q->param('show_full')) {
 204                 $sw_q .= "and (swishdocpath=\"";
 205                 $sw_q .= join("\" or swishdocpath=\"",@path_arr);
 206                 $sw_q .= "\")";
 207                 $tmpl->param('full',1); # show full records
 208         } elsif ($q->param('show_full')) {
 209                 # just show full path, no path defined
 210                 $tmpl->param('full',1);
 211         } else {
 212                 $tmpl->param('full',0);
 213         }
 214
 215         my $hits = $sh->query($sw_q);
 216
 217         $tmpl->param('hits',$hits);
 218         $tmpl->param('search',$sw_q);
 219
 220         $tmpl->param('PAGER_offset',$q->param("PAGER_offset") || 0);
 221         $tmpl->param('last_PAGER_offset',$q->param("last_PAGER_offset") || 0);
 222
 223         $tmpl->param('url_params',"?".join("&",@url_params));
 224
 225         # create a Pager object
 226         my $pager = HTML::Pager->new(
 227                 # required parameters
 228                 query => $q,
 229                 get_data_callback => sub {
 230                         my ($offset, $rows) = @_;
 231
 232                         my @result;
 233                         for (my $i=0; $i<$rows; $i++) {
 234                                 my $r = $swish_results[$offset+$i];
 235                                 if ($r && $tmpl->param('full')) {
 236                                         push @result, $r;
 237                                 } elsif ($r) {
 238                                         # if not full output, skip html
 239                                         delete $r->{html};
 240                                         push @result, $r;
 241                                 }
 242                         }
 243                         return \@result;
 244                 },
 245                 rows => $hits,
 246                 page_size => $ON_PAGE,
 247                 # some optional parameters
 248                 persist_vars => [ @persist_vars ],
 249                 #cell_space_color => '#000000',
 250                 #cell_background_color => '#ffffff',
 251                 #nav_background_color => '#dddddd',
 252                 #javascript_presubmit => 'last_minute_javascript()',
 253                 debug => 1,
 254                 template => $tmpl,
 255         );
 256
 257         my $html = $pager->output;
 258
 259         return in_template($html);
 260 }
 261
 262 sub show_index {
 263         my $self = shift;
 264         my $i = shift;          # field number
 265
 266         my $q = $self->query();
 267
 268         my $field = $q->param("f$i");
 269         my $limit = $q->param("v$i");
 270
 271         my $html;
 272
 273         my $index = new index_DBI(
 274                 $cfg_global->val('global', 'dbi_dbd'),
 275                 $cfg_global->val('global', 'dbi_dsn'),
 276                 $cfg_global->val('global', 'dbi_user'),
 277                 $cfg_global->val('global', 'dbi_passwd') || ''
 278         );
 279
 280         my $total = $index->count($field,$limit);
 281         if (! $total) {
 282                 my $tmpl = $self->load_tmpl('no_index.html');
 283                 $tmpl->param('field',$field);
 284                 $html = $tmpl->output;
 285                 return $html;
 286         }
 287
 288         my $tmpl = $self->load_tmpl('index_res.html', global_vars => 1);
 289         $tmpl->param('field',$field);
 290         $tmpl->param('limit',$limit);
 291         $tmpl->param('total',$total);
 292
 293 # FIXME I should set offset and leave out limit from fetch!!
 294 #       if (! $q->param("PAGER_offset") {
 295 #               $q->param("Pager_offet)
 296 #       }
 297
 298         my $pager = HTML::Pager->new(
 299                 query => $q,
 300                 get_data_callback => sub {
 301                         my ($offset, $rows) = @_;
 302
 303                         my @result = $index->fetch($field,$limit, $offset, $rows);
 304                         return \@result;
 305                 },
 306                 rows => $total,
 307                 page_size => $ON_PAGE,
 308                 persist_vars => [
 309                         'rm',
 310                         "f$i", "v$i", "f".$i."_index",
 311                         'offset',
 312                         ],
 313                 debug => 1,
 314                 template => $tmpl,
 315         );
 316
 317         return in_template($pager->output);
 318 }
 319
 320 1;