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