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 = 200;
  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( ( $namespace > 0 && in_array( $namespace, array_keys( $namespaces) ) )  ?
  52                         wfMsg( 'allinnamespace', str_replace( '_', ' ', $namespaces[$namespace] ) ) :
  53                         wfMsg( 'allarticles' )
  54                 );
  55
  56                 if( isset($par) ) {
  57                         $this->showChunk( $namespace, $par, $to );
  58                 } elseif( isset($from) && !isset($to) ) {
  59                         $this->showChunk( $namespace, $from, $to );
  60                 } else {
  61                         $this->showToplevel( $namespace, $from, $to );
  62                 }
  63         }
  64
  65         /**
  66          * HTML for the top form
  67          * @param integer $namespace A namespace constant (default NS_MAIN).
  68          * @param string $from dbKey we are starting listing at.
  69          * @param string $to dbKey we are ending listing at.
  70          */
  71         function namespaceForm( $namespace = NS_MAIN, $from = '', $to = '' ) {
  72             global $wgScript;
  73             $t = $this->getTitle();
  74
  75             $out  = Xml::openElement( 'div', array( 'class' => 'namespaceoptions' ) );
  76             $out .= Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript ) );
  77             $out .= Xml::hidden( 'title', $t->getPrefixedText() );
  78             $out .= Xml::openElement( 'fieldset' );
  79             $out .= Xml::element( 'legend', null, wfMsg( 'allpages' ) );
  80             $out .= Xml::openElement( 'table', array( 'id' => 'nsselect', 'class' => 'allpages' ) );
  81             $out .= "<tr>
  82                     <td class='mw-label'>" .
  83                         Xml::label( wfMsg( 'allpagesfrom' ), 'nsfrom' ) .
  84                     "</td>
  85                     <td class='mw-input'>" .
  86                         Xml::input( 'from', 30, str_replace('_',' ',$from), array( 'id' => 'nsfrom' ) ) .
  87                     "</td>
  88                 </tr>
  89                 <tr>
  90                     <td class='mw-label'>" .
  91                         Xml::label( wfMsg( 'allpagesto' ), 'nsto' ) .
  92                     "</td>
  93                     <td class='mw-input'>" .
  94                         Xml::input( 'to', 30, str_replace('_',' ',$to), array( 'id' => 'nsto' ) ) .
  95                     "</td>
  96                 </tr>
  97                 <tr>
  98                     <td class='mw-label'>" .
  99                         Xml::label( wfMsg( 'namespace' ), 'namespace' ) .
 100                     "</td>
 101                     <td class='mw-input'>" .
 102                         Xml::namespaceSelector( $namespace, null ) . ' ' .
 103                         Xml::submitButton( wfMsg( 'allpagessubmit' ) ) .
 104                     "</td>
 105                     </tr>";
 106             $out .= Xml::closeElement( 'table' );
 107             $out .= Xml::closeElement( 'fieldset' );
 108             $out .= Xml::closeElement( 'form' );
 109             $out .= Xml::closeElement( 'div' );
 110             return $out;
 111         }
 112
 113         /**
 114          * @param integer $namespace (default NS_MAIN)
 115          */
 116         function showToplevel( $namespace = NS_MAIN, $from = '', $to = '' ) {
 117                 global $wgOut, $wgContLang;
 118                 $align = $wgContLang->isRtl() ? 'left' : 'right';
 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, $lines[0], $lines[count($lines)-1] );
 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 .= "<table class='allpageslist' style='background: inherit;'>";
 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 .= '</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 = '<table style="background: inherit;" width="100%" cellpadding="0" cellspacing="0" border="0">';
 217                                 $out2 .= '<tr valign="top"><td>' . $nsForm;
 218                                 $out2 .= '</td><td align="' . $align . '" style="font-size: smaller; margin-bottom: 1em;">' .
 219                                         $wgUser->getSkin()->makeKnownLinkObj( $this->getTitle(), wfMsgHtml ( 'allpages' ) );
 220                                 $out2 .= "</td></tr></table>";
 221                         } else {
 222                                 $out2 = $nsForm;
 223                         }
 224                 }
 225                 $wgOut->addHTML( $out2 . $out );
 226         }
 227
 228         /**
 229          * Show a line of "ABC to DEF" ranges of articles
 230          * @param string $inpoint Lower limit of pagenames
 231          * @param string $outpout Upper limit of pagenames
 232          * @param integer $namespace (Default NS_MAIN)
 233          */
 234         function showline( $inpoint, $outpoint, $namespace = NS_MAIN ) {
 235                 global $wgContLang;
 236                 $align = $wgContLang->isRtl() ? 'left' : 'right';
 237                 $inpointf = htmlspecialchars( str_replace( '_', ' ', $inpoint ) );
 238                 $outpointf = htmlspecialchars( str_replace( '_', ' ', $outpoint ) );
 239                 // Don't let the length runaway
 240                 $inpointf = $wgContLang->truncate( $inpointf, $this->maxPageLength );
 241                 $outpointf = $wgContLang->truncate( $outpointf, $this->maxPageLength );
 242
 243                 $queryparams = $namespace ? "namespace=$namespace&" : '';
 244                 $special = $this->getTitle();
 245                 $link = $special->escapeLocalUrl( $queryparams . 'from=' . urlencode($inpoint) . '&to=' . urlencode($outpoint) );
 246
 247                 $out = wfMsgHtml( 'alphaindexline',
 248                         "<a href=\"$link\">$inpointf</a></td><td>",
 249                         "</td><td><a href=\"$link\">$outpointf</a>"
 250                 );
 251                 return '<tr><td align="' . $align . '">'.$out.'</td></tr>';
 252         }
 253
 254         /**
 255          * @param integer $namespace (Default NS_MAIN)
 256          * @param string $from list all pages from this name (default FALSE)
 257          * @param string $to list all pages to this name (default FALSE)
 258          */
 259         function showChunk( $namespace = NS_MAIN, $from = false, $to = false ) {
 260                 global $wgOut, $wgUser, $wgContLang, $wgLang;
 261
 262                 $sk = $wgUser->getSkin();
 263
 264                 $fromList = $this->getNamespaceKeyAndText($namespace, $from);
 265                 $toList = $this->getNamespaceKeyAndText( $namespace, $to );
 266                 $namespaces = $wgContLang->getNamespaces();
 267                 $align = $wgContLang->isRtl() ? 'left' : 'right';
 268
 269                 $n = 0;
 270
 271                 if ( !$fromList || !$toList ) {
 272                         $out = wfMsgWikiHtml( 'allpagesbadtitle' );
 273                 } elseif ( !in_array( $namespace, array_keys( $namespaces ) ) ) {
 274                         // Show errormessage and reset to NS_MAIN
 275                         $out = wfMsgExt( 'allpages-bad-ns', array( 'parseinline' ), $namespace );
 276                         $namespace = NS_MAIN;
 277                 } else {
 278                         list( $namespace, $fromKey, $from ) = $fromList;
 279                         list( $namespace2, $toKey, $to ) = $toList;
 280
 281                         $dbr = wfGetDB( DB_SLAVE );
 282                         $conds = array(
 283                                 'page_namespace' => $namespace,
 284                                 'page_title >= ' . $dbr->addQuotes( $fromKey )
 285                         );
 286                         if( $toKey !== "" ) {
 287                                 $conds[] = 'page_title <= ' . $dbr->addQuotes( $toKey );
 288                         }
 289
 290                         $res = $dbr->select( 'page',
 291                                 array( 'page_namespace', 'page_title', 'page_is_redirect' ),
 292                                 $conds,
 293                                 __METHOD__,
 294                                 array(
 295                                         'ORDER BY'  => 'page_title',
 296                                         'LIMIT'     => $this->maxPerPage + 1,
 297                                         'USE INDEX' => 'name_title',
 298                                 )
 299                         );
 300
 301                         if( $res->numRows() > 0 ) {
 302                                 $out = '<table style="background: inherit;" border="0" width="100%">';
 303
 304                                 while( ( $n < $this->maxPerPage ) && ( $s = $res->fetchObject() ) ) {
 305                                         $t = Title::makeTitle( $s->page_namespace, $s->page_title );
 306                                         if( $t ) {
 307                                                 $link = ( $s->page_is_redirect ? '<div class="allpagesredirect">' : '' ) .
 308                                                         $sk->makeKnownLinkObj( $t, htmlspecialchars( $t->getText() ), false, false ) .
 309                                                         ($s->page_is_redirect ? '</div>' : '' );
 310                                         } else {
 311                                                 $link = '[[' . htmlspecialchars( $s->page_title ) . ']]';
 312                                         }
 313                                         if( $n % 3 == 0 ) {
 314                                                 $out .= '<tr>';
 315                                         }
 316                                         $out .= "<td width=\"33%\">$link</td>";
 317                                         $n++;
 318                                         if( $n % 3 == 0 ) {
 319                                                 $out .= '</tr>';
 320                                         }
 321                                 }
 322                                 if( ($n % 3) != 0 ) {
 323                                         $out .= '</tr>';
 324                                 }
 325                                 $out .= '</table>';
 326                         } else {
 327                                 $out = '';
 328                         }
 329                 }
 330
 331                 if ( $this->including() ) {
 332                         $out2 = '';
 333                 } else {
 334                         if( $from == '' ) {
 335                                 // First chunk; no previous link.
 336                                 $prevTitle = null;
 337                         } else {
 338                                 # Get the last title from previous chunk
 339                                 $dbr = wfGetDB( DB_SLAVE );
 340                                 $res_prev = $dbr->select(
 341                                         'page',
 342                                         'page_title',
 343                                         array( 'page_namespace' => $namespace, 'page_title < '.$dbr->addQuotes($from) ),
 344                                         __METHOD__,
 345                                         array( 'ORDER BY' => 'page_title DESC', 'LIMIT' => $this->maxPerPage, 'OFFSET' => ($this->maxPerPage - 1 ) )
 346                                 );
 347
 348                                 # Get first title of previous complete chunk
 349                                 if( $dbr->numrows( $res_prev ) >= $this->maxPerPage ) {
 350                                         $pt = $dbr->fetchObject( $res_prev );
 351                                         $prevTitle = Title::makeTitle( $namespace, $pt->page_title );
 352                                 } else {
 353                                         # The previous chunk is not complete, need to link to the very first title
 354                                         # available in the database
 355                                         $options = array( 'LIMIT' => 1 );
 356                                         if ( ! $dbr->implicitOrderby() ) {
 357                                                 $options['ORDER BY'] = 'page_title';
 358                                         }
 359                                         $reallyFirstPage_title = $dbr->selectField( 'page', 'page_title',
 360                                                 array( 'page_namespace' => $namespace ), __METHOD__, $options );
 361                                         # Show the previous link if it s not the current requested chunk
 362                                         if( $from != $reallyFirstPage_title ) {
 363                                                 $prevTitle =  Title::makeTitle( $namespace, $reallyFirstPage_title );
 364                                         } else {
 365                                                 $prevTitle = null;
 366                                         }
 367                                 }
 368                         }
 369
 370                         $self = $this->getTitle();
 371
 372                         $nsForm = $this->namespaceForm( $namespace, $from, $to );
 373                         $out2 = '<table style="background: inherit;" width="100%" cellpadding="0" cellspacing="0" border="0">';
 374                         $out2 .= '<tr valign="top"><td>' . $nsForm;
 375                         $out2 .= '</td><td align="' . $align . '" style="font-size: smaller; margin-bottom: 1em;">' .
 376                                         $sk->makeKnownLinkObj( $self,
 377                                                 wfMsgHtml ( 'allpages' ) );
 378
 379                         # Do we put a previous link ?
 380                         if( isset( $prevTitle ) &&  $pt = $prevTitle->getText() ) {
 381                                 $q = 'from=' . $prevTitle->getPartialUrl()
 382                                         . ( $namespace ? '&namespace=' . $namespace : '' );
 383                                 $prevLink = $sk->makeKnownLinkObj( $self,
 384                                         wfMsgHTML( 'prevpage', htmlspecialchars( $pt ) ), $q );
 385                                 $out2 = $wgLang->pipeList( array( $out2, $prevLink ) );
 386                         }
 387
 388                         if( $n == $this->maxPerPage && $s = $res->fetchObject() ) {
 389                                 # $s is the first link of the next chunk
 390                                 $t = Title::MakeTitle($namespace, $s->page_title);
 391                                 $q = 'from=' . $t->getPartialUrl()
 392                                         . ( $namespace ? '&namespace=' . $namespace : '' );
 393                                 $nextLink = $sk->makeKnownLinkObj( $self,
 394                                         wfMsgHtml( 'nextpage', htmlspecialchars( $t->getText() ) ), $q );
 395                                 $out2 = $wgLang->pipeList( array( $out2, $nextLink ) );
 396                         }
 397                         $out2 .= "</td></tr></table>";
 398                 }
 399
 400                 $wgOut->addHTML( $out2 . $out );
 401                 if( isset($prevLink) or isset($nextLink) ) {
 402                         $wgOut->addHTML( '<hr /><p style="font-size: smaller; float: ' . $align . '">' );
 403                         if( isset( $prevLink ) ) {
 404                                 $wgOut->addHTML( $prevLink );
 405                         }
 406                         if( isset( $prevLink ) && isset( $nextLink ) ) {
 407                                 $wgOut->addHTML( wfMsgExt( 'pipe-separator' , 'escapenoentities' ) );
 408                         }
 409                         if( isset( $nextLink ) ) {
 410                                 $wgOut->addHTML( $nextLink );
 411                         }
 412                         $wgOut->addHTML( '</p>' );
 413
 414                 }
 415
 416         }
 417
 418         /**
 419          * @param int $ns the namespace of the article
 420          * @param string $text the name of the article
 421          * @return array( int namespace, string dbkey, string pagename ) or NULL on error
 422          * @static (sort of)
 423          * @access private
 424          */
 425         function getNamespaceKeyAndText($ns, $text) {
 426                 if ( $text == '' )
 427                         return array( $ns, '', '' ); # shortcut for common case
 428
 429                 $t = Title::makeTitleSafe($ns, $text);
 430                 if ( $t && $t->isLocal() ) {
 431                         return array( $t->getNamespace(), $t->getDBkey(), $t->getText() );
 432                 } else if ( $t ) {
 433                         return NULL;
 434                 }
 435
 436                 # try again, in case the problem was an empty pagename
 437                 $text = preg_replace('/(#|$)/', 'X$1', $text);
 438                 $t = Title::makeTitleSafe($ns, $text);
 439                 if ( $t && $t->isLocal() ) {
 440                         return array( $t->getNamespace(), '', '' );
 441                 } else {
 442                         return NULL;
 443                 }
 444         }
 445 }