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