includes/SpecialValidate.php

   1 <?php
   2 # Copyright (C) 2004 Magnus Manske <magnus.manske@web.de>
   3 # http://www.mediawiki.org/
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License along
  16 # with this program; if not, write to the Free Software Foundation, Inc.,
  17 # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18 # http://www.gnu.org/copyleft/gpl.html
  19
  20 /**
  21  *
  22  * @package MediaWiki
  23  * @subpackage SpecialPage
  24  */
  25
  26 /**
  27  *
  28  * @package MediaWiki
  29  * @subpackage SpecialPage
  30  */
  31 class Validation {
  32
  33         function find_this_version( $article_title , &$article_time , &$id , &$tab ) {
  34                 $id = "";
  35                 $tab = "";
  36                 $sql = "SELECT cur_id,cur_timestamp FROM cur WHERE cur_namespace=0 AND cur_title='" . wfStrencode( $article_title ) . "'";
  37                 $res = wfQuery( $sql, DB_READ );
  38                 if( $s = wfFetchObject( $res ) ) {
  39                         if ( $article_time == "" ) {
  40                                 # No timestamp = current version
  41                                 $article_time = $s->cur_timestamp;
  42                         } elseif ( $article_time == $s->cur_timestamp ) {
  43                                 # Means current version
  44                                 $tab = "cur";
  45                                 $id = $s->cur_id;
  46                         }
  47                 }
  48
  49                 if ( $id == "" ) {
  50                         $sql = "SELECT old_id FROM old WHERE old_namespace=0 AND old_title='" . wfStrencode( $article_title ) .
  51                                 "' AND old_timestamp='" . wfStrencode( $article_time ) . "'";
  52                         $res = wfQuery( $sql, DB_READ );
  53                         if( $s = wfFetchObject( $res ) ) {
  54                                 $tab = "old";
  55                                 $id = $s->old_id;
  56                         }
  57                 }
  58         }
  59
  60         function get_prev_data( $user_id , $article_title , $article_timestamp = "" ) {
  61                 $ret = array ();
  62                 $sql = "SELECT * FROM validate WHERE val_user='" . wfStrencode( $user_id ) .
  63                         "' AND val_title='" . wfStrencode( $article_title ) . "'";
  64                 if ( $article_timestamp != "" ) {
  65                         $sql .= " AND val_timestamp='" . wfStrencode( $article_timestamp ) . "'";
  66                 }
  67                 $res = wfQuery( $sql, DB_READ );
  68                 while( $s = wfFetchObject( $res ) ) {
  69                         $ret[$s->val_timestamp][$s->val_type] = $s;
  70                 }
  71                 return $ret;
  72         }
  73
  74         function validate_form( $article_title = "" ) {
  75                 global $wgOut, $wgLang, $wgUser, $wgArticle, $wgRequest;
  76
  77                 if ( $wgUser->getID() == 0 ) {
  78                         # Anon
  79                         $wgOut->addHTML( htmlspecialchars( wfMsg( 'val_no_anon_validation' ) ) .
  80                                 $this->getPageStatistics ( $article_title ) ) ;
  81                         return;
  82                 }
  83
  84                 $validationtypes = $wgLang->getValidationTypes();
  85                 if ( $article_title == "" ) {
  86                         $article_title = $wgRequest->getVal( 'article_title' );
  87                         $heading = "<h1>" . htmlspecialchars( $article_title ) . "</h1>\n";
  88                 } else {
  89                         $heading = "";
  90                 }
  91                 $article_time = "";
  92                 $article_time = $wgRequest->getVal( 'timestamp' );
  93                 $article = Title::newFromText( $article_title );
  94                 if( is_null( $article ) ) {
  95                         $wgOut->errorpage( "badtitle", "badtitletext" );
  96                         return;
  97                 }
  98
  99                 # Now we get all the "votes" for the different versions of this article for this user
 100                 $val = $this->get_prev_data( $wgUser->getID() , $article_title );
 101
 102                 # No votes for this version, initial data
 103                 if( !isset( $val[$article_time] ) ) {
 104                         if( $article_time == "" ) {
 105                                 $res = wfQuery( "select cur_timestamp FROM cur WHERE cur_title='" .
 106                                         wfStrencode( $article_title ) . "' AND cur_namespace=0", DB_READ );
 107                                 if( $s = wfFetchObject( $res ) ) {
 108                                         $article_time = $s->cur_timestamp;
 109                                 }
 110                         }
 111                         $val[$article_time] = array();
 112                 }
 113
 114                 # Newest versions first
 115                 krsort( $val );
 116
 117                 # User has clicked "Doit" before, so evaluate form
 118                 if( $wgRequest->wasPosted() ) {
 119                         $oldtime = StrVal( $wgRequest->getVal( 'oldtime' ) );
 120                         if( !isset ( $val[$oldtime] ) ) {
 121                                 $val[$oldtime] = array();
 122                         }
 123
 124                         # Reading postdata
 125                         $postrad = array();
 126                         $poscomment = array();
 127                         for( $idx = 0 ; $idx < count( $validationtypes) ; $idx++ ) {
 128                                 $postrad[$idx] = $wgRequest->getVal( "rad{$idx}" );
 129                                 $postcomment[$idx] = $wgRequest->getText( "comment{$idx}" );
 130                         }
 131
 132                         # Merge others into this one
 133                         if( $wgRequest->getCheck( 'merge_other' ) ) {
 134                                 foreach( $val as $time => $stuff ) {
 135                                         if( $time != $article_time ) {
 136                                                 for( $idx = 0; $idx < count( $validationtypes ); $idx++ ) {
 137                                                         $rad = $postrad[$idx];
 138                                                         if( isset ( $stuff[$idx] ) && $stuff[$idx]->val_value != -1 && $rad == -1 ) {
 139                                                                 $postrad[$idx] = $stuff[$idx]->val_value;
 140                                                                 $postcomment[$idx] = $stuff[$idx]->val_comment;
 141                                                         }
 142                                                 }
 143                                         }
 144                                 }
 145                         }
 146
 147                         # Clear all others
 148                         if( $wgRequest->getCheck( 'clear_other' ) ) {
 149                                 $sql = "DELETE FROM validate WHERE val_title='" . wfStrencode( $article_title ) .
 150                                         "' AND val_timestamp<>'" . wfStrencode( $oldtime ) . "' AND val_user='";
 151                                 $sql .= wfStrencode( $wgUser->getID() ) . "'";
 152                                 wfQuery( $sql, DB_WRITE );
 153                                 $val2 = $val[$oldtime]; # Only version left
 154                                 $val = array(); # So clear others
 155                                 $val[$oldtime] = $val2;
 156                         }
 157
 158                         # Delete old "votes" for this version
 159                         $sql = "DELETE FROM validate WHERE val_title='" . wfStrencode( $article_title ) .
 160                                 "' AND val_timestamp='" . wfStrencode( $oldtime ) . "' AND val_user='";
 161                         $sql .= wfStrencode( $wgUser->getID() ) . "'";
 162                         wfQuery( $sql, DB_WRITE );
 163
 164                         # Incorporate changes
 165                         for( $idx = 0; $idx < count( $validationtypes ); $idx++ ) {
 166                                 $comment = $postcomment[$idx] ;
 167                                 $rad = $postrad[$idx] ;
 168                                 if ( !isset( $val[$oldtime][$idx] ) ) {
 169                                         $val[$oldtime][$idx] = "";
 170                                 }
 171                                 $val[$oldtime][$idx]->val_value = $rad;
 172                                 $val[$oldtime][$idx]->val_comment = $comment;
 173                                 if( $rad != -1 ) {
 174                                         # Store it in the database
 175                                         $sql = "INSERT INTO validate (val_user,val_title,val_timestamp,val_type,val_value,val_comment) " .
 176                                                  "VALUES ( '" . wfStrencode( $wgUser->getID() ) . "','" .
 177                                                  wfStrencode( $article_title ) . "','" .
 178                                                  wfStrencode( $oldtime ) . "','" .
 179                                                  wfStrencode( $idx ) . "','" .
 180                                                  wfStrencode( $rad ) . "','" .
 181                                                  wfStrencode( $comment ) . "')";
 182                                         wfQuery( $sql, DB_WRITE );
 183                                 }
 184                         }
 185                         $wgArticle->showArticle( "Juhuu", wfMsg( 'val_validated' ) );
 186                         return; # Show article instead of validation page
 187                 }
 188
 189                 # Generating HTML
 190                 $html = "";
 191
 192                 $skin = $wgUser->getSkin();
 193                 $staturl = $skin->makeSpecialURL( "validate" , "mode=stat_page&article_title=" . urlencode( $article_title ) );
 194                 $listurl = $skin->makeSpecialURL( "validate" , "mode=list_page" );
 195                 $html .= "<a href=\"" . htmlspecialchars( $staturl ) . "\">" . wfMsg('val_stat_link_text') . "</a> \n";
 196                 $html .= "<a href=\"" . htmlspecialchars( $listurl ) . "\">" . wfMsg('val_article_lists') . "</a><br />\n";
 197                 $html .= "<small>" . wfMsg('val_form_note') . "</small><br />\n";
 198
 199                 # Generating data tables
 200                 $tabsep = "<td width='0' style='border-left:2px solid black;'></td>";
 201                 $topstyle = "style='border-top:2px solid black'";
 202                 foreach( $val as $time => $stuff ) {
 203                         $tablestyle = "cellspacing='0' cellpadding='2'";
 204                         if ( $article_time == $time ) {
 205                                 $tablestyle .=" style='border: 2px solid red'";
 206                         }
 207                         $html .= "<h2>" . wfMsg( 'val_version_of', gmdate( "F d, Y H:i:s", wfTimestamp2Unix( $time ) ) );
 208                         $this->find_this_version ( $article_title , $time , $table_id , $table_name );
 209                         if( $table_name == "cur" ) {
 210                                 $html .= " (" . wfMsg( 'val_this_is_current_version' ) . ")";
 211                         }
 212                         $html .= "</h2>\n" ;
 213                         $html .= "<form method='post'>\n" ;
 214                         $html .= "<input type='hidden' name='oldtime' value=\"" . htmlspecialchars( $time ) . "\" />" ;
 215                         $html .= "<table {$tablestyle}>\n" ;
 216                         $html .= wfMsg( 'val_table_header', $tabsep );
 217                         for( $idx = 0; $idx < count( $validationtypes ); $idx++ ) {
 218                                 $x = explode( "|" , $validationtypes[$idx] , 4 );
 219                                 if( isset ( $stuff[$idx] ) ) {
 220                                         $choice = $stuff[$idx]->val_value;
 221                                 } else {
 222                                         $choice = -1;
 223                                 }
 224                                 if( isset( $stuff[$idx] ) ) {
 225                                         $comment = $stuff[$idx]->val_comment;
 226                                 } else {
 227                                         $comment = "";
 228                                 }
 229                                 $html .= "<tr><th align='left'>{$x[0]}</th>{$tabsep}<td align='right'>{$x[1]}</td>"
 230                                       .  "<td align='center'><span style='white-space: nowrap;'>" ;
 231                                 for( $cnt = 0 ; $cnt < $x[3] ; $cnt++) {
 232                                         $html .= "<input type='radio' name='rad{$idx}' value='{$cnt}'";
 233                                         if ( $choice == $cnt ) $html .= " checked='checked'";
 234                                         $html .= " /> ";
 235                                 }
 236                                 $html .= "</span></td><td>{$x[2]}</td>";
 237                                 $html .= "<td><input type='radio' name='rad{$idx}' value='-1'";
 238                                 if( $choice == -1 ) {
 239                                         $html .= " checked='checked'";
 240                                 }
 241                                 $html .= " /> " . wfMsg ( "val_noop" ) . "</td>{$tabsep}";
 242                                 $html .= "<td><input type='text' name='comment{$idx}' value=\"" . htmlspecialchars( $comment ) . "\" /></td>";
 243                                 $html .= "</tr>\n";
 244                         }
 245                         $html .= "<tr><td {$topstyle} colspan='2'>";
 246
 247                         # link to version
 248                         $title = Title::newFromDBkey( $article_title );
 249                         if ( $table_name == "cur" ) {
 250                                 $link_version = $title->getLocalURL( "" );
 251                         } else {
 252                                 $link_version = $title->getLocalURL( "oldid={$table_id}" );
 253                         }
 254                         $link_version = "<a href=\"" . htmlspecialchars( $link_version ) . "\">" . wfMsg ( 'val_view_version' ) . "</a>";
 255                         $html .= $link_version;
 256                         $html .= "</td><td {$topstyle} colspan='5'>";
 257                         $html .= "<input type='checkbox' name='merge_other' value='1' checked='checked' />";
 258                         $html .= wfMsg( 'val_merge_old' );
 259                         $html .= "<br /><input type='checkbox' name='clear_other' value='1' checked='checked' />";
 260                         $html .= wfMsg( 'val_clear_old', $skin->makeKnownLinkObj( $article ) );
 261                         $html .= "</td><td {$topstyle} align='right' valign='center'><input type='submit' name='doit' value=\"" . htmlspecialchars( wfMsg("ok") ) . "\" /></td>";
 262                         $html .= "</tr></table></form>\n";
 263                 }
 264
 265                 $html .= "<h2>" . wfMsg( 'preview' ) . "</h2>";
 266                 $wgOut->addHTML( $html );
 267                 $wgOut->addWikiText( $wgArticle->getContent( true ) );
 268         }
 269
 270         function getData( $user = -1 , $title = "" , $type = -1 ) {
 271                 $ret = array();
 272                 $sql = array();
 273                 if( $user != -1 ) {
 274                         $sql[] = "val_user='" . wfStrencode( $user ) . "'";
 275                 }
 276                 if( $type != -1 ) {
 277                         $sql[] = "val_type='" . wfStrencode( $type ) . "'";
 278                 }
 279                 if( $title != "" ) {
 280                         $sql[] = "val_title='" . wfStrencode( $title ) . "'";
 281                 }
 282                 $sql = implode( " AND " , $sql );
 283                 if( $sql != "" ) {
 284                         $sql = " WHERE " . $sql;
 285                 }
 286                 $sql = "SELECT * FROM validate" . $sql;
 287                 $res = wfQuery( $sql, DB_READ );
 288                 while( $s = wfFetchObject( $res ) ) {
 289                         $ret["{$s->val_title}"]["{$s->val_timestamp}"]["{$s->val_type}"][] = $s;
 290                 }
 291                 return $ret;
 292         }
 293
 294         # Show statistics for the different versions of a single article
 295         function getPageStatistics( $article_title = "" ) {
 296                 global $wgLang, $wgUser, $wgOut, $wgRequest;
 297                 $validationtypes = $wgLang->getValidationTypes();
 298                 if( $article_title == "" ) {
 299                         $article_title = $wgRequest->getVal( 'article_title' );
 300                 }
 301                 $d = $this->getData( -1 , $article_title , -1 );
 302                 if( count ( $d ) ) {
 303                         $d = array_shift ( $d ) ;
 304                 } else {
 305                         $d = array();
 306                 }
 307                 krsort( $d );
 308
 309                 # Getting table data (cur_id, old_id etc.) for each version
 310                 $table_id = array();
 311                 $table_name = array();
 312                 foreach( $d as $version => $data ) {
 313                         $this->find_this_version( $article_title, $version, $table_id[$version], $table_name[$version] );
 314                 }
 315
 316                 # Generating HTML
 317                 $title = Title::newFromDBkey( $article_title );
 318                 $wgOut->setPageTitle( wfMsg( 'val_page_validation_statistics' , $title->getPrefixedText() ) );
 319                 $html = "";
 320                 $skin = $wgUser->getSkin();
 321                 $listurl = $skin->makeSpecialURL( "validate" , "mode=list_page" );
 322                 $html .= "<a href=\"" . htmlspecialchars( $listurl ) . "\">" . wfMsg( 'val_article_lists' ) . "</a><br /><br />\n";
 323
 324                 $html .= "<table border='1' cellpadding='2' style='font-size:8pt;'>\n";
 325                 $html .= "<tr><th>" . wfMsg('val_version') . "</th>";
 326                 foreach( $validationtypes as $idx => $title ) {
 327                         $title = explode ( "|" , $title );
 328                         $html .= "<th>{$title[0]}</th>";
 329                 }
 330                 $html .= "<th>" . wfMsg('val_total') . "</th>";
 331                 $html .= "</tr>\n";
 332                 foreach( $d as $version => $data ) {
 333                         # Preamble for this version
 334                         $title = Title::newFromDBkey( $article_title );
 335                         $version_date = $wgLang->timeanddate( $version );
 336                         $version_validate_link = $title->escapeLocalURL( "action=validate&timestamp={$version}" );
 337                         $version_validate_link = "<a href=\"{$version_validate_link}\">" . wfMsg('val_validate_version') . "</a>";
 338                         if( $table_name[$version] == 'cur' ) {
 339                                 $version_view_link = $title->escapeLocalURL( "" );
 340                         } else {
 341                                 $version_view_link = $title->escapeLocalURL( "oldid={$table_id[$version]}" );
 342                         }
 343                         $version_view_link = "<a href=\"{$version_view_link}\">" . wfMsg('val_view_version') . "</a>";
 344                         $html .= "<tr>";
 345                         $html .= "<td align='center' valign='top' nowrap='nowrap'><b>{$version_date}</b><br />{$version_view_link}<br />{$version_validate_link}</td>";
 346
 347                         # Individual data
 348                         $vmax = array();
 349                         $vcur = array();
 350                         $users = array();
 351                         foreach( $data as $type => $x2 ) {
 352                                 if ( !isset ( $vcur[$type] ) ) $vcur[$type] = 0 ;
 353                                 if ( !isset ( $vmax[$type] ) ) $vmax[$type] = 0 ;
 354                                 if ( !isset ( $users[$type] ) ) $users[$type] = 0 ;
 355                                 foreach( $x2 as $user => $x ) {
 356                                         $vcur[$type] += $x->val_value;
 357                                         $temp = explode( "|" , $validationtypes[$type] );
 358                                         $vmax[$type] += $temp[3] - 1;
 359                                         $users[$type] += 1;
 360                                 }
 361                         }
 362
 363                         $total_count = 0;
 364                         $total_percent = 0;
 365                         foreach( $validationtypes as $idx => $title ) {
 366                                 if( isset ( $vcur[$idx] ) ) {
 367                                         $average = 100 * $vcur[$idx] / $vmax[$idx] ;
 368                                         $total_count += 1;
 369                                         $total_percent += $average;
 370                                         if( $users[$idx] > 1 ) {
 371                                                 $msgid = "val_percent";
 372                                         } else {
 373                                                 $msgid = "val_percent_single";
 374                                         }
 375                                         $html .= "<td align='center' valign='top'>" .
 376                                                         wfMsg( $msgid, number_format( $average, 2 ) ,
 377                                                                         $vcur[$idx] , $vmax[$idx] , $users[$idx] );
 378                                 } else {
 379                                         $html .= "<td align='center' valign='center'>";
 380                                         $html .= "(" . wfMsg ( "val_noop" ) . ")";
 381                                 }
 382                                 $html .= "</td>";
 383                         }
 384
 385                         if( $total_count > 0 ) {
 386                                 $total = $total_percent / $total_count;
 387                                 $total = number_format( $total , 2 ) . " %";
 388                         } else {
 389                                 $total = "";
 390                         }
 391                         $html .= "<td align='center' valign='top' nowrap='nowrap'><b>{$total}</b></td>";
 392
 393                         $html .= "</tr>";
 394                 }
 395                 $html .= "</table>\n";
 396                 return $html ;
 397         }
 398
 399         function countUserValidations( $userid ) {
 400                 $sql = "SELECT count(DISTINCT val_title) AS num FROM validate WHERE val_user=" . IntVal( $userid );
 401                 $res = wfQuery( $sql, DB_READ );
 402                 if ( $s = wfFetchObject( $res ) ) {
 403                         $num = $s->num;
 404                 } else {
 405                         $num = 0;
 406                 }
 407                 return $num;
 408         }
 409
 410         function getArticleList() {
 411                 global $wgLang, $wgOut;
 412                 $validationtypes = $wgLang->getValidationTypes();
 413                 $wgOut->setPageTitle( wfMsg( 'val_article_lists' ) );
 414                 $html = "";
 415
 416                 # Choices
 417                 $choice = array ();
 418                 $maxw = 0;
 419                 foreach( $validationtypes as $idx => $data ) {
 420                         $x = explode( "|" , $data , 4 );
 421                         if( $x[3] > $maxw ) {
 422                                 $maxw = $x[3];
 423                         }
 424                 }
 425                 foreach( $validationtypes as $idx => $data ) {
 426                         $choice[$idx] = array();
 427                         for( $a = 0 ; $a < $maxw ; $a++ ) {
 428                                 $var = "cb_{$idx}_{$a}";
 429                                 if( isset ( $_POST[$var] ) ) $choice[$idx][$a] = $_POST[$var] ; # Selected
 430                                 else if ( !isset ( $_POST["doit"] ) ) $choice[$idx][$a] = 1 ; # First time
 431                                 else $choice[$idx][$a] = 0 ; # De-selected
 432                         }
 433                 }
 434
 435                 # The form
 436                 $html .= "<form method='post'>\n";
 437                 $html .= "<table border='1' cellspacing='0' cellpadding='2'>" ;
 438                 foreach( $validationtypes as $idx => $data ) {
 439                         $x = explode ( "|" , $data , 4 );
 440
 441                         $html .= "<tr>";
 442                         $html .= "<th nowrap='nowrap'>{$x[0]}</th>";
 443                         $html .= "<td align='right' nowrap='nowrap'>{$x[1]}</td>";
 444
 445                         for( $a = 0; $a < $maxw; $a++ ) {
 446                                 if( $a < $x[3] ) {
 447                                         $td = "<input type='checkbox' name='cb_{$idx}_{$a}' value='1'";
 448                                         if( $choice[$idx][$a] == 1 ) {
 449                                                 $td .= " checked='checked'" ;
 450                                         }
 451                                         $td .= " />";
 452                                 } else {
 453                                         $td = '';
 454                                 }
 455                                 $html .= "<td>{$td}</td>";
 456                         }
 457
 458                         $html .= "<td nowrap='nowrap'>{$x[2]}</td>";
 459                         $html .= "</tr>\n";
 460                 }
 461                 $html .= "<tr><td colspan='" . ( $maxw + 2 ) . "'></td>\n";
 462                 $html .= "<td align='right' valign='center'><input type='submit' name='doit' value=\"" . htmlspecialchars( wfMsg ( 'ok' ) ) . "\" /></td></tr>";
 463                 $html .= "</table>\n";
 464                 $html .= "</form>\n";
 465
 466                 # The query
 467                 $articles = array();
 468                 $sql = "SELECT DISTINCT val_title,val_timestamp,val_type,avg(val_value) AS avg FROM validate GROUP BY val_title,val_timestamp,val_type";
 469                 $res = wfQuery( $sql, DB_READ );
 470                 while( $s = wfFetchObject( $res ) ) {
 471                         $articles[$s->val_title][$s->val_timestamp][$s->val_type] = $s;
 472                 }
 473
 474                 # The list
 475                 $html .= "<ul>\n";
 476                 foreach( $articles as $dbkey => $timedata ) {
 477                         $title = Title::newFromDBkey( $dbkey );
 478                         $out = array();
 479                         krsort( $timedata );
 480
 481                         foreach( $timedata as $timestamp => $typedata ) {
 482                                 $showit = true;
 483                                 foreach( $typedata as $type => $data ) {
 484                                         $avg = intval ( $data->avg + 0.5 );
 485                                         if ( $choice[$type][$avg] == 0 ) $showit = false;
 486                                 }
 487                                 if( $showit ) {
 488                                         $out[] = "<li>" . $this->getVersionLink ( $title , $timestamp ) . "</li>\n";
 489                                 }
 490                         }
 491
 492                         if( count( $out ) > 0 ) {
 493                                 $html .= "<li>\n";
 494                                 $html .= htmlspecialchars( $title->getText() ) . "\n";
 495                                 $html .= "<ul>\n";
 496                                 $html .= implode( "\n" , $out );
 497                                 $html .= "</ul>\n</li>\n";
 498                         }
 499                 }
 500                 $html .= "</ul>\n";
 501                 return $html;
 502         }
 503
 504         function getVersionLink( &$title , $timestamp ) {
 505                 global $wgLang;
 506                 $dbkey = $title->getDBkey();
 507                 $this->find_this_version( $dbkey, $timestamp, $table_id, $table_name );
 508                 if( $table_name == 'cur' ) {
 509                         $link = $title->getLocalURL( "" );
 510                 } else {
 511                         $link = $title->getLocalURL( "action=validate&timestamp={$table_id}" );
 512                 }
 513                 $linktitle = wfMsg( 'val_version_of', $wgLang->timeanddate( $timestamp ) );
 514                 $link = "<a href=\"" . htmlspecialchars( $link ) . "\">" . $linktitle . "</a>";
 515                 if( $table_name == 'cur' ) {
 516                         $link .= " (" . wfMsg ( 'val_this_is_current_version' ) . ")";
 517                 }
 518
 519                 $vlink = wfMsg( 'val_tab' );
 520                 $vlink = "[<a href=\"" . $title->escapeLocalURL( "action=validate&timestamp={$timestamp}" ) . "\">{$vlink}</a>] " . $link;
 521                 return $vlink ;
 522         }
 523
 524 }
 525
 526 /**
 527  * constructor
 528  */
 529 function wfSpecialValidate( $page = '' ) {
 530         global $wgOut, $wgRequest, $wgUseValidation;
 531
 532         if( !$wgUseValidation ) {
 533                 $wgOut->errorpage( "nosuchspecialpage", "nospecialpagetext" );
 534                 return;
 535         }
 536
 537         $mode = $wgRequest->getVal( 'mode', 'form' );
 538         $v = new Validation;
 539         $html = "" ;
 540 /*      if( $mode == "form" ) {
 541                 $html = $v->validate_form () ;
 542         } else */
 543         if( $mode == "stat_page" ) {
 544                 $html = $v->getPageStatistics();
 545         } else if( $mode == "list_page" ) {
 546                 $html = $v->getArticleList();
 547         }
 548
 549         $wgOut->addHTML( $html );
 550 }
 551
 552 ?>