includes/specials/SpecialAllpages.php

   1 <?php
   2
   3 /**
   4  * Implements Special:Allpages
   5  * @ingroup SpecialPage
   6  */
   7 class SpecialAllpages extends IncludableSpecialPage {
   8
   9         /**
  10          * Maximum number of pages to show on single subpage.
  11          */
  12         protected $maxPerPage = 345;
  13
  14         /**
  15          * Maximum number of pages to show on single index subpage.
  16          */
  17         protected $maxLineCount = 100;
  18
  19         /**
  20          * Maximum number of chars to show for an entry.
  21          */
  22         protected $maxPageLength = 70;
  23
  24         /**
  25          * Determines, which message describes the input field 'nsfrom'.
  26          */
  27         protected $nsfromMsg = 'allpagesfrom';
  28
  29         function __construct( $name = 'Allpages' ){
  30                 parent::__construct( $name );
  31         }
  32
  33         /**
  34          * Entry point : initialise variables and call subfunctions.
  35          * @param $par String: becomes "FOO" when called like Special:Allpages/FOO (default NULL)
  36          * @param $specialPage See the SpecialPage object.
  37          */
  38         function execute( $par ) {
  39                 global $wgRequest, $wgOut, $wgContLang;
  40
  41                 $this->setHeaders();
  42                 $this->outputHeader();
  43
  44                 # GET values
  45                 $from = $wgRequest->getVal( 'from', null );
  46                 $to = $wgRequest->getVal( 'to', null );
  47                 $namespace = $wgRequest->getInt( 'namespace' );
  48
  49                 $namespaces = $wgContLang->getNamespaces();
  50
  51                 $wgOut->setPagetitle(
  52                         ( $namespace > 0 && in_array( $namespace, array_keys( $namespaces) ) ) ?
  53                         wfMsg( 'allinnamespace', str_replace( '_', ' ', $namespaces[$namespace] ) ) :
  54                         wfMsg( 'allarticles' )
  55                 );
  56
  57                 if( isset($par) ) {
  58                         $this->showChunk( $namespace, $par, $to );
  59                 } elseif( isset($from) && !isset($to) ) {
  60                         $this->showChunk( $namespace, $from, $to );
  61                 } else {
  62                         $this->showToplevel( $namespace, $from, $to );
  63                 }
  64         }
  65
  66         /**
  67          * HTML for the top form
  68          * @param integer $namespace A namespace constant (default NS_MAIN).
  69          * @param string $from dbKey we are starting listing at.
  70          * @param string $to dbKey we are ending listing at.
  71          */
  72         function namespaceForm( $namespace = NS_MAIN, $from = '', $to = '' ) {
  73                 global $wgScript;
  74                 $t = $this->getTitle();
  75
  76                 $out  = Xml::openElement( 'div', array( 'class' => 'namespaceoptions' ) );
  77                 $out .= Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript ) );
  78                 $out .= Xml::hidden( 'title', $t->getPrefixedText() );
  79                 $out .= Xml::openElement( 'fieldset' );
  80                 $out .= Xml::element( 'legend', null, wfMsg( 'allpages' ) );
  81                 $out .= Xml::openElement( 'table', array( 'id' => 'nsselect', 'class' => 'allpages' ) );
  82                 $out .= "<tr>
  83         <td class='mw-label'>" .
  84                         Xml::label( wfMsg( 'allpagesfrom' ), 'nsfrom' ) .
  85                         "       </td>
  86         <td class='mw-input'>" .
  87                         Xml::input( 'from', 30, str_replace('_',' ',$from), array( 'id' => 'nsfrom' ) ) .
  88                         "       </td>
  89 </tr>
  90 <tr>
  91         <td class='mw-label'>" .
  92                         Xml::label( wfMsg( 'allpagesto' ), 'nsto' ) .
  93                         "       </td>
  94                         <td class='mw-input'>" .
  95                         Xml::input( 'to', 30, str_replace('_',' ',$to), array( 'id' => 'nsto' ) ) .
  96                         "               </td>
  97 </tr>
  98 <tr>
  99         <td class='mw-label'>" .
 100                         Xml::label( wfMsg( 'namespace' ), 'namespace' ) .
 101                         "       </td>
 102                         <td class='mw-input'>" .
 103                         Xml::namespaceSelector( $namespace, null ) . ' ' .
 104                         Xml::submitButton( wfMsg( 'allpagessubmit' ) ) .
 105                         "       </td>
 106 </tr>";
 107                 $out .= Xml::closeElement( 'table' );
 108                 $out .= Xml::closeElement( 'fieldset' );
 109                 $out .= Xml::closeElement( 'form' );
 110                 $out .= Xml::closeElement( 'div' );
 111                 return $out;
 112         }
 113
 114         /**
 115          * @param integer $namespace (default NS_MAIN)
 116          */
 117         function showToplevel( $namespace = NS_MAIN, $from = '', $to = '' ) {
 118                 global $wgOut;
 119
 120                 # TODO: Either make this *much* faster or cache the title index points
 121                 # in the querycache table.
 122
 123                 $dbr = wfGetDB( DB_SLAVE );
 124                 $out = "";
 125                 $where = array( 'page_namespace' => $namespace );
 126
 127                 $from = Title::makeTitleSafe( $namespace, $from );
 128                 $to = Title::makeTitleSafe( $namespace, $to );
 129                 $from = ( $from && $from->isLocal() ) ? $from->getDBkey() : null;
 130                 $to = ( $to && $to->isLocal() ) ? $to->getDBkey() : null;
 131
 132                 if( isset($from) )
 133                         $where[] = 'page_title >= '.$dbr->addQuotes( $from );
 134                 if( isset($to) )
 135                         $where[] = 'page_title <= '.$dbr->addQuotes( $to );
 136
 137                 global $wgMemc;
 138                 $key = wfMemcKey( 'allpages', 'ns', $namespace, $from, $to );
 139                 $lines = $wgMemc->get( $key );
 140
 141                 $count = $dbr->estimateRowCount( 'page', '*', $where, __METHOD__ );
 142                 $maxPerSubpage = intval($count/$this->maxLineCount);
 143                 $maxPerSubpage = max($maxPerSubpage,$this->maxPerPage);
 144
 145                 if( !is_array( $lines ) ) {
 146                         $options = array( 'LIMIT' => 1 );
 147                         $options['ORDER BY'] = 'page_title ASC';
 148                         $firstTitle = $dbr->selectField( 'page', 'page_title', $where, __METHOD__, $options );
 149                         $lastTitle = $firstTitle;
 150                         # This array is going to hold the page_titles in order.
 151                         $lines = array( $firstTitle );
 152                         # If we are going to show n rows, we need n+1 queries to find the relevant titles.
 153                         $done = false;
 154                         while( !$done ) {
 155                                 // Fetch the last title of this chunk and the first of the next
 156                                 $chunk = ( $lastTitle === false )
 157                                         ? array()
 158                                         : array( 'page_title >= ' . $dbr->addQuotes( $lastTitle ) );
 159                                 $res = $dbr->select( 'page', /* FROM */
 160                                         'page_title', /* WHAT */
 161                                         array_merge($where,$chunk),
 162                                         __METHOD__,
 163                                         array ('LIMIT' => 2, 'OFFSET' => $maxPerSubpage - 1, 'ORDER BY' => 'page_title ASC')
 164                                 );
 165
 166                                 if( $s = $dbr->fetchObject( $res ) ) {
 167                                         array_push( $lines, $s->page_title );
 168                                 } else {
 169                                         // Final chunk, but ended prematurely. Go back and find the end.
 170                                         $endTitle = $dbr->selectField( 'page', 'MAX(page_title)',
 171                                                 array_merge($where,$chunk),
 172                                                 __METHOD__ );
 173                                         array_push( $lines, $endTitle );
 174                                         $done = true;
 175                                 }
 176                                 if( $s = $res->fetchObject() ) {
 177                                         array_push( $lines, $s->page_title );
 178                                         $lastTitle = $s->page_title;
 179                                 } else {
 180                                         // This was a final chunk and ended exactly at the limit.
 181                                         // Rare but convenient!
 182                                         $done = true;
 183                                 }
 184                                 $res->free();
 185                         }
 186                         $wgMemc->add( $key, $lines, 3600 );
 187                 }
 188
 189                 // If there are only two or less sections, don't even display them.
 190                 // Instead, display the first section directly.
 191                 if( count( $lines ) <= 2 ) {
 192                         if( !empty($lines) ) {
 193                                 $this->showChunk( $namespace, $from, $to );
 194                         } else {
 195                                 $wgOut->addHTML( $this->namespaceForm( $namespace, $from, $to ) );
 196                         }
 197                         return;
 198                 }
 199
 200                 # At this point, $lines should contain an even number of elements.
 201                 $out .= Xml::openElement( 'table', array( 'class' => 'allpageslist' ) );
 202                 while( count ( $lines ) > 0 ) {
 203                         $inpoint = array_shift( $lines );
 204                         $outpoint = array_shift( $lines );
 205                         $out .= $this->showline( $inpoint, $outpoint, $namespace );
 206                 }
 207                 $out .= Xml::closeElement( 'table' );
 208                 $nsForm = $this->namespaceForm( $namespace, $from, $to );
 209
 210                 # Is there more?
 211                 if( $this->including() ) {
 212                         $out2 = '';
 213                 } else {
 214                         if( isset($from) || isset($to) ) {
 215                                 global $wgUser;
 216                                 $out2 = Xml::openElement( 'table', array( 'class' => 'mw-allpages-table-form' ) ).
 217                                                 '<tr>
 218                                                         <td>' .
 219                                                                 $nsForm .
 220                                                         '</td>
 221                                                         <td class="mw-allpages-nav">' .
 222                                                                 $wgUser->getSkin()->link( $this->getTitle(), wfMsgHtml ( 'allpages' ),
 223                                                                         array(), array(), 'known' ) .
 224                                                         "</td>
 225                                                 </tr>" .
 226                                         Xml::closeElement( 'table' );
 227                         } else {
 228                                 $out2 = $nsForm;
 229                         }
 230                 }
 231                 $wgOut->addHTML( $out2 . $out );
 232         }
 233
 234         /**
 235          * Show a line of "ABC to DEF" ranges of articles
 236          * @param string $inpoint Lower limit of pagenames
 237          * @param string $outpout Upper limit of pagenames
 238          * @param integer $namespace (Default NS_MAIN)
 239          */
 240         function showline( $inpoint, $outpoint, $namespace = NS_MAIN ) {
 241                 global $wgContLang;
 242                 $inpointf = htmlspecialchars( str_replace( '_', ' ', $inpoint ) );
 243                 $outpointf = htmlspecialchars( str_replace( '_', ' ', $outpoint ) );
 244                 // Don't let the length runaway
 245                 $inpointf = $wgContLang->truncate( $inpointf, $this->maxPageLength );
 246                 $outpointf = $wgContLang->truncate( $outpointf, $this->maxPageLength );
 247
 248                 $queryparams = $namespace ? "namespace=$namespace&" : '';
 249                 $special = $this->getTitle();
 250                 $link = $special->escapeLocalUrl( $queryparams . 'from=' . urlencode($inpoint) . '&to=' . urlencode($outpoint) );
 251
 252                 $out = wfMsgHtml( 'alphaindexline',
 253                         "<a href=\"$link\">$inpointf</a></td><td>",
 254                         "</td><td><a href=\"$link\">$outpointf</a>"
 255                 );
 256                 return '<tr><td class="mw-allpages-alphaindexline">' . $out . '</td></tr>';
 257         }
 258
 259         /**
 260          * @param integer $namespace (Default NS_MAIN)
 261          * @param string $from list all pages from this name (default FALSE)
 262          * @param string $to list all pages to this name (default FALSE)
 263          */
 264         function showChunk( $namespace = NS_MAIN, $from = false, $to = false ) {
 265                 global $wgOut, $wgUser, $wgContLang, $wgLang;
 266
 267                 $sk = $wgUser->getSkin();
 268
 269                 $fromList = $this->getNamespaceKeyAndText($namespace, $from);
 270                 $toList = $this->getNamespaceKeyAndText( $namespace, $to );
 271                 $namespaces = $wgContLang->getNamespaces();
 272                 $n = 0;
 273
 274                 if ( !$fromList || !$toList ) {
 275                         $out = wfMsgWikiHtml( 'allpagesbadtitle' );
 276                 } elseif ( !in_array( $namespace, array_keys( $namespaces ) ) ) {
 277                         // Show errormessage and reset to NS_MAIN
 278                         $out = wfMsgExt( 'allpages-bad-ns', array( 'parseinline' ), $namespace );
 279                         $namespace = NS_MAIN;
 280                 } else {
 281                         list( $namespace, $fromKey, $from ) = $fromList;
 282                         list( $namespace2, $toKey, $to ) = $toList;
 283
 284                         $dbr = wfGetDB( DB_SLAVE );
 285                         $conds = array(
 286                                 'page_namespace' => $namespace,
 287                                 'page_title >= ' . $dbr->addQuotes( $fromKey )
 288                         );
 289                         if( $toKey !== "" ) {
 290                                 $conds[] = 'page_title <= ' . $dbr->addQuotes( $toKey );
 291                         }
 292
 293                         $res = $dbr->select( 'page',
 294                                 array( 'page_namespace', 'page_title', 'page_is_redirect' ),
 295                                 $conds,
 296                                 __METHOD__,
 297                                 array(
 298                                         'ORDER BY'  => 'page_title',
 299                                         'LIMIT'     => $this->maxPerPage + 1,
 300                                         'USE INDEX' => 'name_title',
 301                                 )
 302                         );
 303
 304                         if( $res->numRows() > 0 ) {
 305                                 $out = Xml::openElement( 'table', array( 'class' => 'mw-allpages-table-chunk' ) );
 306                                 while( ( $n < $this->maxPerPage ) && ( $s = $res->fetchObject() ) ) {
 307                                         $t = Title::makeTitle( $s->page_namespace, $s->page_title );
 308                                         if( $t ) {
 309                                                 $link = ( $s->page_is_redirect ? '<div class="allpagesredirect">' : '' ) .
 310                                                         $sk->linkKnown( $t, htmlspecialchars( $t->getText() ) ) .
 311                                                         ($s->page_is_redirect ? '</div>' : '' );
 312                                         } else {
 313                                                 $link = '[[' . htmlspecialchars( $s->page_title ) . ']]';
 314                                         }
 315                                         if( $n % 3 == 0 ) {
 316                                                 $out .= '<tr>';
 317                                         }
 318                                         $out .= "<td width=\"33%\">$link</td>";
 319                                         $n++;
 320                                         if( $n % 3 == 0 ) {
 321                                                 $out .= "</tr>\n";
 322                                         }
 323                                 }
 324                                 if( ($n % 3) != 0 ) {
 325                                         $out .= "</tr>\n";
 326                                 }
 327                                 $out .= Xml::closeElement( 'table' );
 328                         } else {
 329                                 $out = '';
 330                         }
 331                 }
 332
 333                 if ( $this->including() ) {
 334                         $out2 = '';
 335                 } else {
 336                         if( $from == '' ) {
 337                                 // First chunk; no previous link.
 338                                 $prevTitle = null;
 339                         } else {
 340                                 # Get the last title from previous chunk
 341                                 $dbr = wfGetDB( DB_SLAVE );
 342                                 $res_prev = $dbr->select(
 343                                         'page',
 344                                         'page_title',
 345                                         array( 'page_namespace' => $namespace, 'page_title < '.$dbr->addQuotes($from) ),
 346                                         __METHOD__,
 347                                         array( 'ORDER BY' => 'page_title DESC',
 348                                                 'LIMIT' => $this->maxPerPage, 'OFFSET' => ($this->maxPerPage - 1 )
 349                                         )
 350                                 );
 351
 352                                 # Get first title of previous complete chunk
 353                                 if( $dbr->numrows( $res_prev ) >= $this->maxPerPage ) {
 354                                         $pt = $dbr->fetchObject( $res_prev );
 355                                         $prevTitle = Title::makeTitle( $namespace, $pt->page_title );
 356                                 } else {
 357                                         # The previous chunk is not complete, need to link to the very first title
 358                                         # available in the database
 359                                         $options = array( 'LIMIT' => 1 );
 360                                         if ( ! $dbr->implicitOrderby() ) {
 361                                                 $options['ORDER BY'] = 'page_title';
 362                                         }
 363                                         $reallyFirstPage_title = $dbr->selectField( 'page', 'page_title',
 364                                                 array( 'page_namespace' => $namespace ), __METHOD__, $options );
 365                                         # Show the previous link if it s not the current requested chunk
 366                                         if( $from != $reallyFirstPage_title ) {
 367                                                 $prevTitle =  Title::makeTitle( $namespace, $reallyFirstPage_title );
 368                                         } else {
 369                                                 $prevTitle = null;
 370                                         }
 371                                 }
 372                         }
 373
 374                         $self = $this->getTitle();
 375
 376                         $nsForm = $this->namespaceForm( $namespace, $from, $to );
 377                         $out2 = Xml::openElement( 'table', array( 'class' => 'mw-allpages-table-form' ) ).
 378                                                 '<tr>
 379                                                         <td>' .
 380                                                                 $nsForm .
 381                                                         '</td>
 382                                                         <td class="mw-allpages-nav">' .
 383                                                                 $sk->link( $self, wfMsgHtml ( 'allpages' ), array(), array(), 'known' );
 384
 385                         # Do we put a previous link ?
 386                         if( isset( $prevTitle ) &&  $pt = $prevTitle->getText() ) {
 387                                 $query = array( 'from' => $prevTitle->getText() );
 388
 389                                 if( $namespace )
 390                                         $query['namespace'] = $namespace;
 391
 392                                 $prevLink = $sk->linkKnown(
 393                                         $self,
 394                                         htmlspecialchars( wfMsg( 'prevpage', $pt ) ),
 395                                         array(),
 396                                         $query
 397                                 );
 398                                 $out2 = $wgLang->pipeList( array( $out2, $prevLink ) );
 399                         }
 400
 401                         if( $n == $this->maxPerPage && $s = $res->fetchObject() ) {
 402                                 # $s is the first link of the next chunk
 403                                 $t = Title::MakeTitle($namespace, $s->page_title);
 404                                 $query = array( 'from' => $t->getText() );
 405
 406                                 if( $namespace )
 407                                         $query['namespace'] = $namespace;
 408
 409                                 $nextLink = $sk->linkKnown(
 410                                         $self,
 411                                         htmlspecialchars( wfMsg( 'nextpage', $t->getText() ) ),
 412                                         array(),
 413                                         $query
 414                                 );
 415                                 $out2 = $wgLang->pipeList( array( $out2, $nextLink ) );
 416                         }
 417                         $out2 .= "</td></tr></table>";
 418                 }
 419
 420                 $wgOut->addHTML( $out2 . $out );
 421                 if( isset($prevLink) or isset($nextLink) ) {
 422                         $wgOut->addHTML( '<hr /><p class="mw-allpages-nav">' );
 423                         if( isset( $prevLink ) ) {
 424                                 $wgOut->addHTML( $prevLink );
 425                         }
 426                         if( isset( $prevLink ) && isset( $nextLink ) ) {
 427                                 $wgOut->addHTML( wfMsgExt( 'pipe-separator' , 'escapenoentities' ) );
 428                         }
 429                         if( isset( $nextLink ) ) {
 430                                 $wgOut->addHTML( $nextLink );
 431                         }
 432                         $wgOut->addHTML( '</p>' );
 433
 434                 }
 435
 436         }
 437
 438         /**
 439          * @param int $ns the namespace of the article
 440          * @param string $text the name of the article
 441          * @return array( int namespace, string dbkey, string pagename ) or NULL on error
 442          * @static (sort of)
 443          * @access private
 444          */
 445         function getNamespaceKeyAndText($ns, $text) {
 446                 if ( $text == '' )
 447                         return array( $ns, '', '' ); # shortcut for common case
 448
 449                 $t = Title::makeTitleSafe($ns, $text);
 450                 if ( $t && $t->isLocal() ) {
 451                         return array( $t->getNamespace(), $t->getDBkey(), $t->getText() );
 452                 } else if ( $t ) {
 453                         return NULL;
 454                 }
 455
 456                 # try again, in case the problem was an empty pagename
 457                 $text = preg_replace('/(#|$)/', 'X$1', $text);
 458                 $t = Title::makeTitleSafe($ns, $text);
 459                 if ( $t && $t->isLocal() ) {
 460                         return array( $t->getNamespace(), '', '' );
 461                 } else {
 462                         return NULL;
 463                 }
 464         }
 465 }