includes/specials/SpecialStatistics.php

   1 <?php
   2 /**
   3  * Implements Special:Statistics
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Special page lists various statistics, including the contents of
  26  * `site_stats`, plus page view details if enabled
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class SpecialStatistics extends SpecialPage {
  31         private $views, $edits, $good, $images, $total, $users,
  32                 $activeUsers = 0;
  33
  34         public function __construct() {
  35                 parent::__construct( 'Statistics' );
  36         }
  37
  38         public function execute( $par ) {
  39                 global $wgMemc, $wgDisableCounters, $wgMiserMode;
  40
  41                 $this->setHeaders();
  42                 $this->getOutput()->addModuleStyles( 'mediawiki.special' );
  43
  44                 $this->views = SiteStats::views();
  45                 $this->edits = SiteStats::edits();
  46                 $this->good = SiteStats::articles();
  47                 $this->images = SiteStats::images();
  48                 $this->total = SiteStats::pages();
  49                 $this->users = SiteStats::users();
  50                 $this->activeUsers = SiteStats::activeUsers();
  51                 $this->hook = '';
  52
  53                 # Staticic - views
  54                 $viewsStats = '';
  55                 if ( !$wgDisableCounters ) {
  56                         $viewsStats = $this->getViewsStats();
  57                 }
  58
  59                 # Set active user count
  60                 if ( !$wgMiserMode ) {
  61                         $key = wfMemcKey( 'sitestats', 'activeusers-updated' );
  62                         // Re-calculate the count if the last tally is old...
  63                         if ( !$wgMemc->get( $key ) ) {
  64                                 $dbw = wfGetDB( DB_MASTER );
  65                                 SiteStatsUpdate::cacheUpdate( $dbw );
  66                                 $wgMemc->set( $key, '1', 24 * 3600 ); // don't update for 1 day
  67                         }
  68                 }
  69
  70                 $text = Xml::openElement( 'table', array( 'class' => 'wikitable mw-statistics-table' ) );
  71
  72                 # Statistic - pages
  73                 $text .= $this->getPageStats();
  74
  75                 # Statistic - edits
  76                 $text .= $this->getEditStats();
  77
  78                 # Statistic - users
  79                 $text .= $this->getUserStats();
  80
  81                 # Statistic - usergroups
  82                 $text .= $this->getGroupStats();
  83                 $text .= $viewsStats;
  84
  85                 # Statistic - popular pages
  86                 if ( !$wgDisableCounters && !$wgMiserMode ) {
  87                         $text .= $this->getMostViewedPages();
  88                 }
  89
  90                 # Statistic - other
  91                 $extraStats = array();
  92                 if ( wfRunHooks( 'SpecialStatsAddExtra', array( &$extraStats ) ) ) {
  93                         $text .= $this->getOtherStats( $extraStats );
  94                 }
  95
  96                 $text .= Xml::closeElement( 'table' );
  97
  98                 # Customizable footer
  99                 $footer = $this->msg( 'statistics-footer' );
 100                 if ( !$footer->isBlank() ) {
 101                         $text .= "\n" . $footer->parse();
 102                 }
 103
 104                 $this->getOutput()->addHTML( $text );
 105         }
 106
 107         /**
 108          * Format a row
 109          * @param string $text Description of the row
 110          * @param float $number A statistical number
 111          * @param array $trExtraParams Params to table row, see Html::elememt
 112          * @param string $descMsg Message key
 113          * @param array|string $descMsgParam Message parameters
 114          * @return string Table row in HTML format
 115          */
 116         private function formatRow( $text, $number, $trExtraParams = array(),
 117                 $descMsg = '', $descMsgParam = ''
 118         ) {
 119                 if ( $descMsg ) {
 120                         $msg = $this->msg( $descMsg, $descMsgParam );
 121                         if ( $msg->exists() ) {
 122                                 $descriptionText = $this->msg( 'parentheses' )->rawParams( $msg->parse() )->escaped();
 123                                 $text .= "<br />" . Xml::element( 'small', array( 'class' => 'mw-statistic-desc' ),
 124                                         " $descriptionText" );
 125                         }
 126                 }
 127
 128                 return Html::rawElement( 'tr', $trExtraParams,
 129                         Html::rawElement( 'td', array(), $text ) .
 130                         Html::rawElement( 'td', array( 'class' => 'mw-statistics-numbers' ), $number )
 131                 );
 132         }
 133
 134         /**
 135          * Each of these methods is pretty self-explanatory, get a particular
 136          * row for the table of statistics
 137          * @return string
 138          */
 139         private function getPageStats() {
 140                 return Xml::openElement( 'tr' ) .
 141                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-header-pages' )->parse() ) .
 142                         Xml::closeElement( 'tr' ) .
 143                                 $this->formatRow( Linker::linkKnown( SpecialPage::getTitleFor( 'Allpages' ),
 144                                         $this->msg( 'statistics-articles' )->parse() ),
 145                                         $this->getLanguage()->formatNum( $this->good ),
 146                                         array( 'class' => 'mw-statistics-articles' ) ) .
 147                                 $this->formatRow( $this->msg( 'statistics-pages' )->parse(),
 148                                         $this->getLanguage()->formatNum( $this->total ),
 149                                         array( 'class' => 'mw-statistics-pages' ),
 150                                         'statistics-pages-desc' ) .
 151                                 $this->formatRow( Linker::linkKnown( SpecialPage::getTitleFor( 'Listfiles' ),
 152                                         $this->msg( 'statistics-files' )->parse() ),
 153                                         $this->getLanguage()->formatNum( $this->images ),
 154                                         array( 'class' => 'mw-statistics-files' ) );
 155         }
 156
 157         private function getEditStats() {
 158                 return Xml::openElement( 'tr' ) .
 159                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-header-edits' )->parse() ) .
 160                         Xml::closeElement( 'tr' ) .
 161                         $this->formatRow( $this->msg( 'statistics-edits' )->parse(),
 162                                 $this->getLanguage()->formatNum( $this->edits ),
 163                                 array( 'class' => 'mw-statistics-edits' )
 164                         ) .
 165                         $this->formatRow( $this->msg( 'statistics-edits-average' )->parse(),
 166                                 $this->getLanguage()
 167                                         ->formatNum( sprintf( '%.2f', $this->total ? $this->edits / $this->total : 0 ) ),
 168                                 array( 'class' => 'mw-statistics-edits-average' )
 169                         );
 170         }
 171
 172         private function getUserStats() {
 173                 global $wgActiveUserDays;
 174
 175                 return Xml::openElement( 'tr' ) .
 176                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-header-users' )->parse() ) .
 177                         Xml::closeElement( 'tr' ) .
 178                         $this->formatRow( $this->msg( 'statistics-users' )->parse(),
 179                                 $this->getLanguage()->formatNum( $this->users ),
 180                                 array( 'class' => 'mw-statistics-users' )
 181                         ) .
 182                         $this->formatRow( $this->msg( 'statistics-users-active' )->parse() . ' ' .
 183                                 Linker::linkKnown(
 184                                         SpecialPage::getTitleFor( 'Activeusers' ),
 185                                         $this->msg( 'listgrouprights-members' )->escaped()
 186                                 ),
 187                                 $this->getLanguage()->formatNum( $this->activeUsers ),
 188                                 array( 'class' => 'mw-statistics-users-active' ),
 189                                 'statistics-users-active-desc',
 190                                 $this->getLanguage()->formatNum( $wgActiveUserDays )
 191                         );
 192         }
 193
 194         private function getGroupStats() {
 195                 global $wgGroupPermissions, $wgImplicitGroups;
 196                 $text = '';
 197                 foreach ( $wgGroupPermissions as $group => $permissions ) {
 198                         # Skip generic * and implicit groups
 199                         if ( in_array( $group, $wgImplicitGroups ) || $group == '*' ) {
 200                                 continue;
 201                         }
 202                         $groupname = htmlspecialchars( $group );
 203                         $msg = $this->msg( 'group-' . $groupname );
 204                         if ( $msg->isBlank() ) {
 205                                 $groupnameLocalized = $groupname;
 206                         } else {
 207                                 $groupnameLocalized = $msg->text();
 208                         }
 209                         $msg = $this->msg( 'grouppage-' . $groupname )->inContentLanguage();
 210                         if ( $msg->isBlank() ) {
 211                                 $grouppageLocalized = MWNamespace::getCanonicalName( NS_PROJECT ) . ':' . $groupname;
 212                         } else {
 213                                 $grouppageLocalized = $msg->text();
 214                         }
 215                         $linkTarget = Title::newFromText( $grouppageLocalized );
 216                         $grouppage = Linker::link(
 217                                 $linkTarget,
 218                                 htmlspecialchars( $groupnameLocalized )
 219                         );
 220                         $grouplink = Linker::linkKnown(
 221                                 SpecialPage::getTitleFor( 'Listusers' ),
 222                                 $this->msg( 'listgrouprights-members' )->escaped(),
 223                                 array(),
 224                                 array( 'group' => $group )
 225                         );
 226                         # Add a class when a usergroup contains no members to allow hiding these rows
 227                         $classZero = '';
 228                         $countUsers = SiteStats::numberingroup( $groupname );
 229                         if ( $countUsers == 0 ) {
 230                                 $classZero = ' statistics-group-zero';
 231                         }
 232                         $text .= $this->formatRow( $grouppage . ' ' . $grouplink,
 233                                 $this->getLanguage()->formatNum( $countUsers ),
 234                                 array( 'class' => 'statistics-group-' . Sanitizer::escapeClass( $group ) . $classZero ) );
 235                 }
 236
 237                 return $text;
 238         }
 239
 240         private function getViewsStats() {
 241                 return Xml::openElement( 'tr' ) .
 242                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-header-views' )->parse() ) .
 243                         Xml::closeElement( 'tr' ) .
 244                                 $this->formatRow( $this->msg( 'statistics-views-total' )->parse(),
 245                                         $this->getLanguage()->formatNum( $this->views ),
 246                                                 array( 'class' => 'mw-statistics-views-total' ), 'statistics-views-total-desc' ) .
 247                                 $this->formatRow( $this->msg( 'statistics-views-peredit' )->parse(),
 248                                         $this->getLanguage()->formatNum( sprintf( '%.2f', $this->edits ?
 249                                                 $this->views / $this->edits : 0 ) ),
 250                                                 array( 'class' => 'mw-statistics-views-peredit' ) );
 251         }
 252
 253         private function getMostViewedPages() {
 254                 $text = '';
 255                 $dbr = wfGetDB( DB_SLAVE );
 256                 $res = $dbr->select(
 257                         'page',
 258                         array(
 259                                 'page_namespace',
 260                                 'page_title',
 261                                 'page_counter',
 262                         ),
 263                         array(
 264                                 'page_is_redirect' => 0,
 265                                 'page_counter > 0',
 266                         ),
 267                         __METHOD__,
 268                         array(
 269                                 'ORDER BY' => 'page_counter DESC',
 270                                 'LIMIT' => 10,
 271                         )
 272                 );
 273
 274                 if ( $res->numRows() > 0 ) {
 275                         $text .= Xml::openElement( 'tr' );
 276                         $text .= Xml::tags(
 277                                 'th',
 278                                 array( 'colspan' => '2' ),
 279                                 $this->msg( 'statistics-mostpopular' )->parse()
 280                         );
 281                         $text .= Xml::closeElement( 'tr' );
 282
 283                         foreach ( $res as $row ) {
 284                                 $title = Title::makeTitleSafe( $row->page_namespace, $row->page_title );
 285
 286                                 if ( $title instanceof Title ) {
 287                                         $text .= $this->formatRow( Linker::link( $title ),
 288                                                 $this->getLanguage()->formatNum( $row->page_counter ) );
 289                                 }
 290                         }
 291                         $res->free();
 292                 }
 293
 294                 return $text;
 295         }
 296
 297         /**
 298          * Conversion of external statistics into an internal representation
 299          * Following a ([<header-message>][<item-message>] = number) pattern
 300          *
 301          * @param array $stats
 302          * @return string
 303          */
 304         private function getOtherStats( array $stats ) {
 305                 $return = '';
 306
 307                 foreach ( $stats as $header => $items ) {
 308                         // Identify the structure used
 309                         if ( is_array( $items ) ) {
 310
 311                                 // Ignore headers that are recursively set as legacy header
 312                                 if ( $header !== 'statistics-header-hooks' ) {
 313                                         $return .= $this->formatRowHeader( $header );
 314                                 }
 315
 316                                 // Collect all items that belong to the same header
 317                                 foreach ( $items as $key => $value ) {
 318                                         $name = $this->msg( $key )->parse();
 319                                         $number = htmlspecialchars( $value );
 320
 321                                         $return .= $this->formatRow(
 322                                                 $name,
 323                                                 $this->getLanguage()->formatNum( $number ),
 324                                                 array( 'class' => 'mw-statistics-hook', 'id' => 'mw-' . $key )
 325                                         );
 326                                 }
 327                         } else {
 328                                 // Create the legacy header only once
 329                                 if ( $return === '' ) {
 330                                         $return .= $this->formatRowHeader( 'statistics-header-hooks' );
 331                                 }
 332
 333                                 // Recursively remap the legacy structure
 334                                 $return .= $this->getOtherStats( array( 'statistics-header-hooks' =>
 335                                         array( $header => $items ) ) );
 336                         }
 337                 }
 338
 339                 return $return;
 340         }
 341
 342         /**
 343          * Format row header
 344          *
 345          * @param string $header
 346          * @return string
 347          */
 348         private function formatRowHeader( $header ) {
 349                 return Xml::openElement( 'tr' ) .
 350                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( $header )->parse() ) .
 351                         Xml::closeElement( 'tr' );
 352         }
 353
 354         protected function getGroupName() {
 355                 return 'wiki';
 356         }
 357 }