includes/SpecialAllpages.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  * @subpackage SpecialPage
   5  */
   6
   7 /**
   8  * Entry point : initialise variables and call subfunctions.
   9  * @param string $par Becomes "FOO" when called like Special:Allpages/FOO (default NULL)
  10  */
  11 function wfSpecialAllpages( $par=NULL, $specialPage ) {
  12         global $wgRequest, $wgOut, $wgContLang;
  13
  14         # GET values
  15         $from = $wgRequest->getVal( 'from' );
  16         $namespace = $wgRequest->getInt( 'namespace' );
  17
  18         $namespaces = $wgContLang->getNamespaces();
  19
  20         $indexPage = new SpecialAllpages();
  21
  22         if( !in_array($namespace, array_keys($namespaces)) )
  23                 $namespace = 0;
  24
  25         $wgOut->setPagetitle( $namespace > 0 ?
  26                 wfMsg( 'allinnamespace', $namespaces[$namespace] ) :
  27                 wfMsg( 'allarticles' )
  28                 );
  29
  30         if ( isset($par) ) {
  31                 $indexPage->showChunk( $namespace, $par, $specialPage->including() );
  32         } elseif ( isset($from) ) {
  33                 $indexPage->showChunk( $namespace, $from, $specialPage->including() );
  34         } else {
  35                 $indexPage->showToplevel ( $namespace, $specialPage->including() );
  36         }
  37 }
  38
  39 class SpecialAllpages {
  40         var $maxPerPage=960;
  41         var $topLevelMax=50;
  42         var $name='Allpages';
  43         # Determines, which message describes the input field 'nsfrom' (->SpecialPrefixindex.php)
  44         var $nsfromMsg='allpagesfrom';
  45
  46 /**
  47  * HTML for the top form
  48  * @param integer $namespace A namespace constant (default NS_MAIN).
  49  * @param string $from Article name we are starting listing at.
  50  */
  51 function namespaceForm ( $namespace = NS_MAIN, $from = '' ) {
  52         global $wgScript;
  53         $t = Title::makeTitle( NS_SPECIAL, $this->name );
  54
  55         $namespaceselect = HTMLnamespaceselector($namespace, null);
  56
  57         $frombox = "<input type='text' size='20' name='from' id='nsfrom' value=\""
  58                     . htmlspecialchars ( $from ) . '"/>';
  59         $submitbutton = '<input type="submit" value="' . wfMsgHtml( 'allpagessubmit' ) . '" />';
  60
  61         $out = "<div class='namespaceoptions'><form method='get' action='{$wgScript}'>";
  62         $out .= '<input type="hidden" name="title" value="'.$t->getPrefixedText().'" />';
  63         $out .= "
  64 <table id='nsselect' class='allpages'>
  65         <tr>
  66                 <td align='right'>" . wfMsgHtml($this->nsfromMsg) . "</td>
  67                 <td align='left'><label for='nsfrom'>$frombox</label></td>
  68         </tr>
  69         <tr>
  70                 <td align='right'><label for='namespace'>" . wfMsgHtml('namespace') . "</label></td>
  71                 <td align='left'>
  72                         $namespaceselect $submitbutton
  73                 </td>
  74         </tr>
  75 </table>
  76 ";
  77         $out .= '</form></div>';
  78                 return $out;
  79 }
  80
  81 /**
  82  * @param integer $namespace (default NS_MAIN)
  83  */
  84 function showToplevel ( $namespace = NS_MAIN, $including = false ) {
  85         global $wgOut, $wgUser;
  86         $sk = $wgUser->getSkin();
  87         $fname = "indexShowToplevel";
  88
  89         # TODO: Either make this *much* faster or cache the title index points
  90         # in the querycache table.
  91
  92         $dbr =& wfGetDB( DB_SLAVE );
  93         $page = $dbr->tableName( 'page' );
  94         $fromwhere = "FROM $page WHERE page_namespace=$namespace";
  95         $order_arr = array ( 'ORDER BY' => 'page_title' );
  96         $order_str = 'ORDER BY page_title';
  97         $out = "";
  98         $where = array( 'page_namespace' => $namespace );
  99
 100         global $wgMemc, $wgDBname;
 101         $key = "$wgDBname:allpages:ns:$namespace";
 102         $lines = $wgMemc->get( $key );
 103
 104         if( !is_array( $lines ) ) {
 105                 $firstTitle = $dbr->selectField( 'page', 'page_title', $where, $fname, array( 'LIMIT' => 1 ) );
 106                 $lastTitle = $firstTitle;
 107
 108                 # This array is going to hold the page_titles in order.
 109                 $lines = array( $firstTitle );
 110
 111                 # If we are going to show n rows, we need n+1 queries to find the relevant titles.
 112                 $done = false;
 113                 for( $i = 0; !$done; ++$i ) {
 114                         // Fetch the last title of this chunk and the first of the next
 115                         $chunk = is_null( $lastTitle )
 116                                 ? ''
 117                                 : 'page_title >= ' . $dbr->addQuotes( $lastTitle );
 118                         $res = $dbr->select(
 119                                 'page', /* FROM */
 120                                 'page_title', /* WHAT */
 121                                 $where + array( $chunk),
 122                                 $fname,
 123                                 array ('LIMIT' => 2, 'OFFSET' => $this->maxPerPage - 1, 'ORDER BY' => 'page_title') );
 124
 125                         if ( $s = $dbr->fetchObject( $res ) ) {
 126                                 array_push( $lines, $s->page_title );
 127                         } else {
 128                                 // Final chunk, but ended prematurely. Go back and find the end.
 129                                 $endTitle = $dbr->selectField( 'page', 'MAX(page_title)',
 130                                         array(
 131                                                 'page_namespace' => $namespace,
 132                                                 $chunk
 133                                         ), $fname );
 134                                 array_push( $lines, $endTitle );
 135                                 $done = true;
 136                         }
 137                         if( $s = $dbr->fetchObject( $res ) ) {
 138                                 array_push( $lines, $s->page_title );
 139                                 $lastTitle = $s->page_title;
 140                         } else {
 141                                 // This was a final chunk and ended exactly at the limit.
 142                                 // Rare but convenient!
 143                                 $done = true;
 144                         }
 145                         $dbr->freeResult( $res );
 146                 }
 147                 $wgMemc->add( $key, $lines, 3600 );
 148         }
 149
 150         // If there are only two or less sections, don't even display them.
 151         // Instead, display the first section directly.
 152         if( count( $lines ) <= 2 ) {
 153                 $this->showChunk( $namespace, '', $including );
 154                 return;
 155         }
 156
 157         # At this point, $lines should contain an even number of elements.
 158         $out .= "<table style='background: inherit;'>";
 159         while ( count ( $lines ) > 0 ) {
 160                 $inpoint = array_shift ( $lines );
 161                 $outpoint = array_shift ( $lines );
 162                 $out .= $this->showline ( $inpoint, $outpoint, $namespace, false );
 163         }
 164         $out .= '</table>';
 165         $nsForm = $this->namespaceForm ( $namespace, '', false );
 166
 167         # Is there more?
 168         if ( $including ) {
 169                 $out2 = '';
 170         } else {
 171                 $morelinks = '';
 172                 if ( $morelinks != '' ) {
 173                         $out2 = '<table style="background: inherit;" width="100%" cellpadding="0" cellspacing="0" border="0">';
 174                         $out2 .= '<tr valign="top"><td align="left">' . $nsForm;
 175                         $out2 .= '</td><td align="right" style="font-size: smaller; margin-bottom: 1em;">';
 176                         $out2 .= $morelinks . '</td></tr></table><hr />';
 177                 } else {
 178                         $out2 = $nsForm . '<hr />';
 179                 }
 180         }
 181
 182         $wgOut->addHtml( $out2 . $out );
 183 }
 184
 185 /**
 186  * @todo Document
 187  * @param string $from
 188  * @param integer $namespace (Default NS_MAIN)
 189  */
 190 function showline( $inpoint, $outpoint, $namespace = NS_MAIN ) {
 191         global $wgUser;
 192         $sk = $wgUser->getSkin();
 193         $dbr =& wfGetDB( DB_SLAVE );
 194
 195         $inpointf = htmlspecialchars( str_replace( '_', ' ', $inpoint ) );
 196         $outpointf = htmlspecialchars( str_replace( '_', ' ', $outpoint ) );
 197         $queryparams = ($namespace ? "namespace=$namespace" : '');
 198         $special = Title::makeTitle( NS_SPECIAL, $this->name . '/' . $inpoint );
 199         $link = $special->escapeLocalUrl( $queryparams );
 200
 201         $out = wfMsgHtml(
 202                 'alphaindexline',
 203                 "<a href=\"$link\">$inpointf</a></td><td><a href=\"$link\">",
 204                 "</a></td><td align=\"left\"><a href=\"$link\">$outpointf</a>"
 205         );
 206         return '<tr><td align="right">'.$out.'</td></tr>';
 207 }
 208
 209 /**
 210  * @param integer $namespace (Default NS_MAIN)
 211  * @param string $from list all pages from this name (default FALSE)
 212  */
 213 function showChunk( $namespace = NS_MAIN, $from, $including = false ) {
 214         global $wgOut, $wgUser, $wgContLang;
 215
 216         $fname = 'indexShowChunk';
 217
 218         $sk = $wgUser->getSkin();
 219
 220         $fromTitle = null;
 221         if ($from!="") {
 222                 $fromTitle = Title::newFromURL( $from );
 223                 if (!$fromTitle) {
 224                         return;
 225                 }
 226                 $fromNS = $fromTitle->getNamespace();
 227                 if ($namespace == NS_MAIN)
 228                         $namespace = $fromNS;
 229         }
 230         $fromKey = is_null( $fromTitle ) ? '' : $fromTitle->getDBkey();
 231
 232         $dbr =& wfGetDB( DB_SLAVE );
 233         $res = $dbr->select( 'page',
 234                 array( 'page_namespace', 'page_title', 'page_is_redirect' ),
 235                 array(
 236                         'page_namespace' => $namespace,
 237                         'page_title >= ' . $dbr->addQuotes( $fromKey )
 238                 ),
 239                 $fname,
 240                 array(
 241                         'ORDER BY'  => 'page_title',
 242                         'LIMIT'     => $this->maxPerPage + 1,
 243                         'USE INDEX' => 'name_title',
 244                 )
 245         );
 246
 247         ### FIXME: side link to previous
 248
 249         $n = 0;
 250         $out = '<table style="background: inherit;" border="0" width="100%">';
 251
 252         $namespaces = $wgContLang->getFormattedNamespaces();
 253         while( ($n < $this->maxPerPage) && ($s = $dbr->fetchObject( $res )) ) {
 254                 $t = Title::makeTitle( $s->page_namespace, $s->page_title );
 255                 if( $t ) {
 256                         $link = ($s->page_is_redirect ? '<div class="allpagesredirect">' : '' ) .
 257                                 $sk->makeKnownLinkObj( $t, htmlspecialchars( $t->getText() ), false, false ) .
 258                                 ($s->page_is_redirect ? '</div>' : '' );
 259                 } else {
 260                         $link = '[[' . htmlspecialchars( $s->page_title ) . ']]';
 261                 }
 262                 if( $n % 3 == 0 ) {
 263                         $out .= '<tr>';
 264                 }
 265                 $out .= "<td>$link</td>";
 266                 $n++;
 267                 if( $n % 3 == 0 ) {
 268                         $out .= '</tr>';
 269                 }
 270         }
 271         if( ($n % 3) != 0 ) {
 272                 $out .= '</tr>';
 273         }
 274         $out .= '</table>';
 275
 276
 277         if ( $including ) {
 278                 $out2 = '';
 279         } else {
 280                 $nsForm = $this->namespaceForm ( $namespace, $from );
 281                 $out2 = '<table style="background: inherit;" width="100%" cellpadding="0" cellspacing="0" border="0">';
 282                 $out2 .= '<tr valign="top"><td align="left">' . $nsForm;
 283                 $out2 .= '</td><td align="right" style="font-size: smaller; margin-bottom: 1em;">' .
 284                                 $sk->makeKnownLink( $wgContLang->specialPage( "Allpages" ),
 285                                         wfMsgHtml ( 'allpages' ) );
 286                 if ( ($n == $this->maxPerPage) && ($s = $dbr->fetchObject( $res )) ) {
 287                         $namespaceparam = $namespace ? "&namespace=$namespace" : "";
 288                         $out2 .= " | " . $sk->makeKnownLink(
 289                                 $wgContLang->specialPage( "Allpages" ),
 290                                 wfMsgHtml ( 'nextpage', $s->page_title ),
 291                                 "from=" . wfUrlEncode ( $s->page_title ) . $namespaceparam );
 292                 }
 293                 $out2 .= "</td></tr></table><hr />";
 294         }
 295
 296         $wgOut->addHtml( $out2 . $out );
 297 }
 298 }
 299
 300 ?>