includes/specials/SpecialAllPages.php

   1 <?php
   2 /**
   3  * Implements Special:Allpages
   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  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Implements Special:Allpages
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class SpecialAllPages extends IncludableSpecialPage {
  30
  31         /**
  32          * Maximum number of pages to show on single subpage.
  33          *
  34          * @var int $maxPerPage
  35          */
  36         protected $maxPerPage = 345;
  37
  38         /**
  39          * Determines, which message describes the input field 'nsfrom'.
  40          *
  41          * @var string $nsfromMsg
  42          */
  43         protected $nsfromMsg = 'allpagesfrom';
  44
  45         /**
  46          * Constructor
  47          *
  48          * @param string $name Name of the special page, as seen in links and URLs (default: 'Allpages')
  49          */
  50         function __construct( $name = 'Allpages' ) {
  51                 parent::__construct( $name );
  52         }
  53
  54         /**
  55          * Entry point : initialise variables and call subfunctions.
  56          *
  57          * @param string $par Becomes "FOO" when called like Special:Allpages/FOO (default null)
  58          */
  59         function execute( $par ) {
  60                 $request = $this->getRequest();
  61                 $out = $this->getOutput();
  62
  63                 $this->setHeaders();
  64                 $this->outputHeader();
  65                 $out->allowClickjacking();
  66
  67                 # GET values
  68                 $from = $request->getVal( 'from', null );
  69                 $to = $request->getVal( 'to', null );
  70                 $namespace = $request->getInt( 'namespace' );
  71                 $hideredirects = $request->getBool( 'hideredirects', false );
  72
  73                 $namespaces = $this->getContext()->getLanguage()->getNamespaces();
  74
  75                 $out->setPageTitle(
  76                         ( $namespace > 0 && array_key_exists( $namespace, $namespaces ) ) ?
  77                                 $this->msg( 'allinnamespace', str_replace( '_', ' ', $namespaces[$namespace] ) ) :
  78                                 $this->msg( 'allarticles' )
  79                 );
  80                 $out->addModuleStyles( 'mediawiki.special' );
  81
  82                 if ( $par !== null ) {
  83                         $this->showChunk( $namespace, $par, $to, $hideredirects );
  84                 } elseif ( $from !== null && $to === null ) {
  85                         $this->showChunk( $namespace, $from, $to, $hideredirects );
  86                 } else {
  87                         $this->showToplevel( $namespace, $from, $to, $hideredirects );
  88                 }
  89         }
  90
  91         /**
  92          * HTML for the top form
  93          *
  94          * @param int $namespace A namespace constant (default NS_MAIN).
  95          * @param string $from DbKey we are starting listing at.
  96          * @param string $to DbKey we are ending listing at.
  97          * @param bool $hideredirects Dont show redirects  (default false)
  98          * @return string
  99          */
 100         function namespaceForm( $namespace = NS_MAIN, $from = '', $to = '', $hideredirects = false ) {
 101                 $t = $this->getPageTitle();
 102
 103                 $out = Xml::openElement( 'div', array( 'class' => 'namespaceoptions' ) );
 104                 $out .= Xml::openElement( 'form', array( 'method' => 'get', 'action' => $this->getConfig()->get( 'Script' ) ) );
 105                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 106                 $out .= Xml::openElement( 'fieldset' );
 107                 $out .= Xml::element( 'legend', null, $this->msg( 'allpages' )->text() );
 108                 $out .= Xml::openElement( 'table', array( 'id' => 'nsselect', 'class' => 'allpages' ) );
 109                 $out .= "<tr>
 110         <td class='mw-label'>" .
 111                         Xml::label( $this->msg( 'allpagesfrom' )->text(), 'nsfrom' ) .
 112                         "       </td>
 113         <td class='mw-input'>" .
 114                         Xml::input( 'from', 30, str_replace( '_', ' ', $from ), array( 'id' => 'nsfrom' ) ) .
 115                         "       </td>
 116 </tr>
 117 <tr>
 118         <td class='mw-label'>" .
 119                         Xml::label( $this->msg( 'allpagesto' )->text(), 'nsto' ) .
 120                         "       </td>
 121                         <td class='mw-input'>" .
 122                         Xml::input( 'to', 30, str_replace( '_', ' ', $to ), array( 'id' => 'nsto' ) ) .
 123                         "               </td>
 124 </tr>
 125 <tr>
 126         <td class='mw-label'>" .
 127                         Xml::label( $this->msg( 'namespace' )->text(), 'namespace' ) .
 128                         "       </td>
 129                         <td class='mw-input'>" .
 130                         Html::namespaceSelector(
 131                                 array( 'selected' => $namespace ),
 132                                 array( 'name' => 'namespace', 'id' => 'namespace' )
 133                         ) . ' ' .
 134                         Xml::checkLabel(
 135                                 $this->msg( 'allpages-hide-redirects' )->text(),
 136                                 'hideredirects',
 137                                 'hideredirects',
 138                                 $hideredirects
 139                         ) . ' ' .
 140                         Xml::submitButton( $this->msg( 'allpagessubmit' )->text() ) .
 141                         "       </td>
 142 </tr>";
 143                 $out .= Xml::closeElement( 'table' );
 144                 $out .= Xml::closeElement( 'fieldset' );
 145                 $out .= Xml::closeElement( 'form' );
 146                 $out .= Xml::closeElement( 'div' );
 147
 148                 return $out;
 149         }
 150
 151         /**
 152          * @param int $namespace (default NS_MAIN)
 153          * @param string $from List all pages from this name
 154          * @param string $to List all pages to this name
 155          * @param bool $hideredirects Dont show redirects (default false)
 156          */
 157         function showToplevel( $namespace = NS_MAIN, $from = '', $to = '', $hideredirects = false ) {
 158                 $from = Title::makeTitleSafe( $namespace, $from );
 159                 $to = Title::makeTitleSafe( $namespace, $to );
 160                 $from = ( $from && $from->isLocal() ) ? $from->getDBkey() : null;
 161                 $to = ( $to && $to->isLocal() ) ? $to->getDBkey() : null;
 162
 163                 $this->showChunk( $namespace, $from, $to, $hideredirects );
 164         }
 165
 166         /**
 167          * @param int $namespace Namespace (Default NS_MAIN)
 168          * @param string $from List all pages from this name (default false)
 169          * @param string $to List all pages to this name (default false)
 170          * @param bool $hideredirects Dont show redirects (default false)
 171          */
 172         function showChunk( $namespace = NS_MAIN, $from = false, $to = false, $hideredirects = false ) {
 173                 $output = $this->getOutput();
 174
 175                 $fromList = $this->getNamespaceKeyAndText( $namespace, $from );
 176                 $toList = $this->getNamespaceKeyAndText( $namespace, $to );
 177                 $namespaces = $this->getContext()->getLanguage()->getNamespaces();
 178                 $n = 0;
 179
 180                 if ( !$fromList || !$toList ) {
 181                         $out = $this->msg( 'allpagesbadtitle' )->parseAsBlock();
 182                 } elseif ( !array_key_exists( $namespace, $namespaces ) ) {
 183                         // Show errormessage and reset to NS_MAIN
 184                         $out = $this->msg( 'allpages-bad-ns', $namespace )->parse();
 185                         $namespace = NS_MAIN;
 186                 } else {
 187                         list( $namespace, $fromKey, $from ) = $fromList;
 188                         list( , $toKey, $to ) = $toList;
 189
 190                         $dbr = wfGetDB( DB_SLAVE );
 191                         $conds = array(
 192                                 'page_namespace' => $namespace,
 193                                 'page_title >= ' . $dbr->addQuotes( $fromKey )
 194                         );
 195
 196                         if ( $hideredirects ) {
 197                                 $conds['page_is_redirect'] = 0;
 198                         }
 199
 200                         if ( $toKey !== "" ) {
 201                                 $conds[] = 'page_title <= ' . $dbr->addQuotes( $toKey );
 202                         }
 203
 204                         $res = $dbr->select( 'page',
 205                                 array( 'page_namespace', 'page_title', 'page_is_redirect', 'page_id' ),
 206                                 $conds,
 207                                 __METHOD__,
 208                                 array(
 209                                         'ORDER BY' => 'page_title',
 210                                         'LIMIT' => $this->maxPerPage + 1,
 211                                         'USE INDEX' => 'name_title',
 212                                 )
 213                         );
 214
 215                         if ( $res->numRows() > 0 ) {
 216                                 $out = Xml::openElement( 'table', array( 'class' => 'mw-allpages-table-chunk' ) );
 217                                 while ( ( $n < $this->maxPerPage ) && ( $s = $res->fetchObject() ) ) {
 218                                         $t = Title::newFromRow( $s );
 219                                         if ( $t ) {
 220                                                 $link = ( $s->page_is_redirect ? '<div class="allpagesredirect">' : '' ) .
 221                                                         Linker::link( $t ) .
 222                                                         ( $s->page_is_redirect ? '</div>' : '' );
 223                                         } else {
 224                                                 $link = '[[' . htmlspecialchars( $s->page_title ) . ']]';
 225                                         }
 226
 227                                         if ( $n % 3 == 0 ) {
 228                                                 $out .= '<tr>';
 229                                         }
 230
 231                                         $out .= "<td style=\"width:33%\">$link</td>";
 232                                         $n++;
 233                                         if ( $n % 3 == 0 ) {
 234                                                 $out .= "</tr>\n";
 235                                         }
 236                                 }
 237
 238                                 if ( ( $n % 3 ) != 0 ) {
 239                                         $out .= "</tr>\n";
 240                                 }
 241                                 $out .= Xml::closeElement( 'table' );
 242                         } else {
 243                                 $out = '';
 244                         }
 245                 }
 246
 247                 if ( $this->including() ) {
 248                         $output->addHTML( $out );
 249                         return;
 250                 }
 251
 252                 if ( $from == '' ) {
 253                         // First chunk; no previous link.
 254                         $prevTitle = null;
 255                 } else {
 256                         # Get the last title from previous chunk
 257                         $dbr = wfGetDB( DB_SLAVE );
 258                         $res_prev = $dbr->select(
 259                                 'page',
 260                                 'page_title',
 261                                 array( 'page_namespace' => $namespace, 'page_title < ' . $dbr->addQuotes( $from ) ),
 262                                 __METHOD__,
 263                                 array( 'ORDER BY' => 'page_title DESC',
 264                                         'LIMIT' => $this->maxPerPage, 'OFFSET' => ( $this->maxPerPage - 1 )
 265                                 )
 266                         );
 267
 268                         # Get first title of previous complete chunk
 269                         if ( $dbr->numrows( $res_prev ) >= $this->maxPerPage ) {
 270                                 $pt = $dbr->fetchObject( $res_prev );
 271                                 $prevTitle = Title::makeTitle( $namespace, $pt->page_title );
 272                         } else {
 273                                 # The previous chunk is not complete, need to link to the very first title
 274                                 # available in the database
 275                                 $options = array( 'LIMIT' => 1 );
 276                                 if ( !$dbr->implicitOrderby() ) {
 277                                         $options['ORDER BY'] = 'page_title';
 278                                 }
 279                                 $reallyFirstPage_title = $dbr->selectField( 'page', 'page_title',
 280                                         array( 'page_namespace' => $namespace ), __METHOD__, $options );
 281                                 # Show the previous link if it s not the current requested chunk
 282                                 if ( $from != $reallyFirstPage_title ) {
 283                                         $prevTitle = Title::makeTitle( $namespace, $reallyFirstPage_title );
 284                                 } else {
 285                                         $prevTitle = null;
 286                                 }
 287                         }
 288                 }
 289
 290                 $self = $this->getPageTitle();
 291
 292                 $topLinks = array(
 293                         Linker::link( $self, $this->msg( 'allpages' )->escaped() )
 294                 );
 295                 $bottomLinks = array();
 296
 297                 # Do we put a previous link ?
 298                 if ( $prevTitle && $pt = $prevTitle->getText() ) {
 299                         $query = array( 'from' => $prevTitle->getText() );
 300
 301                         if ( $namespace ) {
 302                                 $query['namespace'] = $namespace;
 303                         }
 304
 305                         if ( $hideredirects ) {
 306                                 $query['hideredirects'] = $hideredirects;
 307                         }
 308
 309                         $prevLink = Linker::linkKnown(
 310                                 $self,
 311                                 $this->msg( 'prevpage', $pt )->escaped(),
 312                                 array(),
 313                                 $query
 314                         );
 315                         $topLinks[] = $prevLink;
 316                         $bottomLinks[] = $prevLink;
 317                 }
 318
 319                 if ( $n == $this->maxPerPage && $s = $res->fetchObject() ) {
 320                         # $s is the first link of the next chunk
 321                         $t = Title::makeTitle( $namespace, $s->page_title );
 322                         $query = array( 'from' => $t->getText() );
 323
 324                         if ( $namespace ) {
 325                                 $query['namespace'] = $namespace;
 326                         }
 327
 328                         if ( $hideredirects ) {
 329                                 $query['hideredirects'] = $hideredirects;
 330                         }
 331
 332                         $nextLink = Linker::linkKnown(
 333                                 $self,
 334                                 $this->msg( 'nextpage', $t->getText() )->escaped(),
 335                                 array(),
 336                                 $query
 337                         );
 338                         $topLinks[] = $nextLink;
 339                         $bottomLinks[] = $nextLink;
 340                 }
 341
 342                 $nsForm = $this->namespaceForm( $namespace, $from, $to, $hideredirects );
 343                 $out2 = Xml::openElement( 'table', array( 'class' => 'mw-allpages-table-form' ) ) .
 344                         '<tr>
 345                                                 <td>' .
 346                         $nsForm .
 347                         '</td>
 348                                                 <td class="mw-allpages-nav">' .
 349                         $this->getLanguage()->pipeList( $topLinks ) .
 350                         '</td></tr></table>';
 351
 352                 $output->addHTML( $out2 . $out );
 353
 354                 if ( count( $bottomLinks ) ) {
 355                         $output->addHTML(
 356                                 Html::element( 'hr' ) .
 357                                         Html::rawElement( 'div', array( 'class' => 'mw-allpages-nav' ),
 358                                                 $this->getLanguage()->pipeList( $bottomLinks )
 359                                         )
 360                         );
 361                 }
 362         }
 363
 364         /**
 365          * @param int $ns The namespace of the article
 366          * @param string $text The name of the article
 367          * @return array( int namespace, string dbkey, string pagename ) or null on error
 368          */
 369         protected function getNamespaceKeyAndText( $ns, $text ) {
 370                 if ( $text == '' ) {
 371                         # shortcut for common case
 372                         return array( $ns, '', '' );
 373                 }
 374
 375                 $t = Title::makeTitleSafe( $ns, $text );
 376                 if ( $t && $t->isLocal() ) {
 377                         return array( $t->getNamespace(), $t->getDBkey(), $t->getText() );
 378                 } elseif ( $t ) {
 379                         return null;
 380                 }
 381
 382                 # try again, in case the problem was an empty pagename
 383                 $text = preg_replace( '/(#|$)/', 'X$1', $text );
 384                 $t = Title::makeTitleSafe( $ns, $text );
 385                 if ( $t && $t->isLocal() ) {
 386                         return array( $t->getNamespace(), '', '' );
 387                 } else {
 388                         return null;
 389                 }
 390         }
 391
 392         protected function getGroupName() {
 393                 return 'pages';
 394         }
 395 }