includes/SpecialAllpages.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  * Entry point : initialise variables and call subfunctions.
  10  * @param string $par ????? (default NULL)
  11  */
  12 function wfSpecialAllpages( $par=NULL ) {
  13         global $indexMaxperpage, $toplevelMaxperpage, $wgRequest, $wgOut, $wgContLang;
  14         $indexMaxperpage = 480;
  15         $toplevelMaxperpage = 50;
  16         $from = $wgRequest->getVal( 'from' );
  17         $namespace = $wgRequest->getInt( 'namespace' );
  18         $names = $wgContLang->getNamespaces();
  19         if( !isset( $names[$namespace] ) ) {
  20                 $namespace = 0;
  21         }
  22         $wgOut->setPagetitle ( $namespace > 0 ? wfMsg ( 'allpagesnamespace', $names[$namespace] )
  23                                               : wfMsg ( 'allarticles' ) );
  24
  25         if ( $par ) {
  26                 indexShowChunk( $par, $namespace );
  27         } elseif ( $from ) {
  28                 indexShowChunk( $from, $namespace );
  29         } else {
  30                 indexShowToplevel ( $namespace );
  31         }
  32 }
  33
  34 /**
  35  * HTML for the top form
  36  * @param integer $namespace A namespace constant (default NS_MAIN).
  37  * @param string $from Article name we are starting listing at.
  38  */
  39 function namespaceForm ( $namespace = NS_MAIN, $from = '' ) {
  40         global $wgContLang, $wgScript;
  41
  42         $t = Title::makeTitle( NS_SPECIAL, "Allpages" );
  43
  44         $namespaceselect = '<select name="namespace">';
  45         $arr = $wgContLang->getNamespaces();
  46         foreach ( $arr as $ns => $name ) {
  47                 if ( $ns < NS_MAIN ) continue;
  48                 $namespacename = str_replace ( '_', ' ', $name);
  49                 $n = ($ns == 0) ? wfMsg ( 'articlenamespace' ) : $namespacename;
  50                 $sel = ($ns == $namespace) ? ' selected="selected"' : '';
  51                 $namespaceselect .= "<option value='{$ns}'{$sel}>{$n}</option>";
  52         }
  53         $namespaceselect .= '</select>';
  54
  55         $frombox = '<input type="text" size="20" name="from" value="'
  56                     . htmlspecialchars ( $from ) . '"/>';
  57         $submitbutton = '<input type="submit" value="' . wfMsg( 'allpagessubmit' ) . '" />';
  58
  59         $out = "<div class='namespaceselector'><form method='get' action='{$wgScript}'>";
  60         $out .= '<input type="hidden" name="title" value="'.$t->getPrefixedText().'" />';
  61         $out .= wfMsg ( 'allpagesformtext1', $frombox ) . '<br />';
  62         $out .= wfMsg ( 'allpagesformtext2', $namespaceselect, $submitbutton );
  63         $out .= '</form></div>';
  64         return $out;
  65 }
  66
  67 /**
  68  * @todo Document
  69  * @param integer $namespace (default NS_MAIN)
  70  */
  71 function indexShowToplevel ( $namespace = NS_MAIN ) {
  72         global $wgOut, $indexMaxperpage, $toplevelMaxperpage, $wgContLang, $wgRequest, $wgUser;
  73         $sk = $wgUser->getSkin();
  74         $fname = "indexShowToplevel";
  75         $namespace = intval ($namespace);
  76
  77         # TODO: Either make this *much* faster or cache the title index points
  78         # in the querycache table.
  79
  80         $dbr =& wfGetDB( DB_SLAVE );
  81         $page = $dbr->tableName( 'page' );
  82         $fromwhere = "FROM $page WHERE page_namespace=$namespace";
  83         $order_arr = array ( 'ORDER BY' => 'page_title' );
  84         $order_str = 'ORDER BY page_title';
  85         $out = "";
  86         $where = array( 'page_namespace' => $namespace );
  87
  88         $count = $dbr->selectField( 'page', 'COUNT(*)', $where, $fname );
  89         $sections = ceil( $count / $indexMaxperpage );
  90
  91         if ( $sections < 3 ) {
  92                 # If there are only two or less sections, don't even display them.
  93                 # Instead, display the first section directly.
  94                 indexShowChunk( '', $namespace );
  95                 return;
  96         }
  97
  98         # We want to display $toplevelMaxperpage lines starting at $offset.
  99         # NOTICE: $offset starts at 0
 100         $offset = intval ( $wgRequest->getVal( 'offset' ) );
 101         if ( $offset < 0 ) { $offset = 0; }
 102         if ( $offset >= $sections ) { $offset = $sections - 1; }
 103
 104         # Where to stop? Notice that this can take the value of $sections, but $offset can't, because if
 105         # we're displaying only the very last section, we still need two DB queries to find the titles
 106         $stopat = ( $offset + $toplevelMaxperpage < $sections )
 107                   ? $offset + $toplevelMaxperpage : $sections ;
 108
 109         # This array is going to hold the page_titles in order.
 110         $lines = array();
 111
 112         # If we are going to show n rows, we need n+1 queries to find the relevant titles.
 113         for ( $i = $offset; $i <= $stopat; $i++ ) {
 114                 if ( $i == $sections )                  # if we're displaying the last section, we need to
 115                         $from = $count-1;                       # find the last page_title in the DB
 116                 else if ( $i > $offset )
 117                         $from = $i * $indexMaxperpage - 1;
 118                 else
 119                         $from = $i * $indexMaxperpage;
 120                 $limit = ( $i == $offset || $i == $stopat ) ? 1 : 2;
 121                 $sql = "SELECT page_title $fromwhere $order_str " . $dbr->limitResult ( $limit, $from );
 122                 $res = $dbr->query( $sql, $fname );
 123                 $s = $dbr->fetchObject( $res );
 124                 array_push ( $lines, $s->page_title );
 125                 if ( $s = $dbr->fetchObject( $res ) ) {
 126                         array_push ( $lines, $s->page_title );
 127                 }
 128                 $dbr->freeResult( $res );
 129         }
 130
 131         # At this point, $lines should contain an even number of elements.
 132         $out .= "<table style='background: inherit;'>";
 133         while ( count ( $lines ) > 0 ) {
 134                 $inpoint = array_shift ( $lines );
 135                 $outpoint = array_shift ( $lines );
 136                 $out .= indexShowline ( $inpoint, $outpoint, $namespace );
 137         }
 138         $out .= '</table>';
 139
 140         $nsForm = namespaceForm ( $namespace );
 141
 142         # Is there more?
 143         $morelinks = '';
 144         if ( $offset > 0 ) {
 145                 $morelinks = $sk->makeKnownLink (
 146                         $wgContLang->specialPage ( 'Allpages' ),
 147                         wfMsg ( 'allpagesprev' ),
 148                         ( $offset > $toplevelMaxperpage ) ? 'offset='.($offset-$toplevelMaxperpage) : ''
 149                 );
 150         }
 151         if ( $stopat < $sections-1 ) {
 152                 if ( $morelinks != '' ) { $morelinks .= " | "; }
 153                 $morelinks .= $sk->makeKnownLink (
 154                         $wgContLang->specialPage ( 'Allpages' ),
 155                         wfMsg ( 'allpagesnext' ),
 156                         'offset=' . ($offset + $toplevelMaxperpage)
 157                 );
 158         }
 159
 160         if ( $morelinks != '' ) {
 161                 $out2 = '<table style="background: inherit;" width="100%" cellpadding="0" cellspacing="0" border="0">';
 162                 $out2 .= '<tr valign="top"><td align="left">' . $nsForm;
 163                 $out2 .= '</td><td align="right" style="font-size: smaller; margin-bottom: 1em;">';
 164                 $out2 .= $morelinks . '</td></tr></table><hr />';
 165         } else {
 166                 $out2 = $nsForm . '<hr />';
 167         }
 168
 169         $wgOut->addHtml( $out2 . $out );
 170 }
 171
 172 /**
 173  * @todo Document
 174  * @param string $from
 175  * @param integer $namespace (Default NS_MAIN)
 176  */
 177 function indexShowline( $inpoint, $outpoint, $namespace = NS_MAIN ) {
 178         global $wgOut, $wgLang, $wgUser;
 179         $sk = $wgUser->getSkin();
 180         $dbr =& wfGetDB( DB_SLAVE );
 181
 182         $inpointf = htmlspecialchars( str_replace( '_', ' ', $inpoint ) );
 183         $outpointf = htmlspecialchars( str_replace( '_', ' ', $outpoint ) );
 184         $queryparams = $namespace ? ('namespace='.intval($namespace)) : '';
 185         $special = Title::makeTitle( NS_SPECIAL, 'Allpages/' . $inpoint );
 186         $link = $special->escapeLocalUrl( $queryparams );
 187
 188         $out = wfMsg(
 189                 'alphaindexline',
 190                 "<a href=\"$link\">$inpointf</a></td><td><a href=\"$link\">",
 191                 "</a></td><td align=\"left\"><a href=\"$link\">$outpointf</a>"
 192         );
 193         return '<tr><td align="right">'.$out.'</td></tr>';
 194 }
 195
 196 function indexShowChunk( $from, $namespace = NS_MAIN ) {
 197         global $wgOut, $wgUser, $indexMaxperpage, $wgContLang;
 198         $sk = $wgUser->getSkin();
 199         $maxPlusOne = $indexMaxperpage + 1;
 200         $namespacee = intval($namespace);
 201
 202         $out = '';
 203         $dbr =& wfGetDB( DB_SLAVE );
 204         $page = $dbr->tableName( 'page' );
 205
 206         $fromTitle = Title::newFromURL( $from );
 207         $fromKey = is_null( $fromTitle ) ? '' : $fromTitle->getDBkey();
 208
 209         $sql = "SELECT page_title FROM $page WHERE page_namespace=$namespacee" .
 210                 " AND page_title >= ".  $dbr->addQuotes( $fromKey ) .
 211                 " ORDER BY page_title LIMIT " . $maxPlusOne;
 212         $res = $dbr->query( $sql, 'indexShowChunk' );
 213
 214         ### FIXME: side link to previous
 215
 216         $n = 0;
 217         $out = '<table style="background: inherit;" border="0" width="100%">';
 218         while( ($n < $indexMaxperpage) && ($s = $dbr->fetchObject( $res )) ) {
 219                 $t = Title::makeTitle( $namespacee, $s->page_title );
 220                 if( $t ) {
 221                         $link = $sk->makeKnownLinkObj( $t, $t->getText() );
 222                 } else {
 223                         $link = '[[' . htmlspecialchars( $s->page_title ) . ']]';
 224                 }
 225                 if( $n % 3 == 0 ) {
 226                         $out .= '<tr>';
 227                 }
 228                 $out .= "<td>$link</td>";
 229                 $n++;
 230                 if( $n % 3 == 0 ) {
 231                         $out .= '</tr>';
 232                 }
 233         }
 234         if( ($n % 3) != 0 ) {
 235                 $out .= '</tr>';
 236         }
 237         $out .= '</table>';
 238
 239         $nsForm = namespaceForm ( $namespace, $from );
 240         $out2 = '<table style="background: inherit;" width="100%" cellpadding="0" cellspacing="0" border="0">';
 241         $out2 .= '<tr valign="top"><td align="left">' . $nsForm;
 242         $out2 .= '</td><td align="right" style="font-size: smaller; margin-bottom: 1em;">' .
 243                         $sk->makeKnownLink( $wgContLang->specialPage( "Allpages" ),
 244                                 wfMsg ( 'allpages' ) );
 245         if ( ($n == $indexMaxperpage) && ($s = $dbr->fetchObject( $res )) ) {
 246                 $namespaceparam = $namespace ? "&namespace=$namespace" : "";
 247                 $out2 .= " | " . $sk->makeKnownLink(
 248                         $wgContLang->specialPage( "Allpages" ),
 249                         wfMsg ( 'nextpage', $s->page_title ),
 250                         "from=" . wfUrlEncode ( $s->page_title ) . $namespaceparam );
 251         }
 252         $out2 .= "</td></tr></table><hr />";
 253
 254         $wgOut->addHtml( $out2 . $out );
 255 }
 256
 257 ?>