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
  32         private $views, $edits, $good, $images, $total, $users,
  33                         $activeUsers = 0;
  34
  35         public function __construct() {
  36                 parent::__construct( 'Statistics' );
  37         }
  38
  39         public function execute( $par ) {
  40                 global $wgMemc, $wgDisableCounters, $wgMiserMode;
  41
  42                 $this->setHeaders();
  43                 $this->getOutput()->addModuleStyles( 'mediawiki.special' );
  44
  45                 $this->views = SiteStats::views();
  46                 $this->edits = SiteStats::edits();
  47                 $this->good = SiteStats::articles();
  48                 $this->images = SiteStats::images();
  49                 $this->total = SiteStats::pages();
  50                 $this->users = SiteStats::users();
  51                 $this->activeUsers = SiteStats::activeUsers();
  52                 $this->hook = '';
  53
  54                 # Staticic - views
  55                 $viewsStats = '';
  56                 if ( !$wgDisableCounters ) {
  57                         $viewsStats = $this->getViewsStats();
  58                 }
  59
  60                 # Set active user count
  61                 if ( !$wgMiserMode ) {
  62                         $key = wfMemcKey( 'sitestats', 'activeusers-updated' );
  63                         // Re-calculate the count if the last tally is old...
  64                         if ( !$wgMemc->get( $key ) ) {
  65                                 $dbw = wfGetDB( DB_MASTER );
  66                                 SiteStatsUpdate::cacheUpdate( $dbw );
  67                                 $wgMemc->set( $key, '1', 24 * 3600 ); // don't update for 1 day
  68                         }
  69                 }
  70
  71                 $text = Xml::openElement( 'table', array( 'class' => 'wikitable mw-statistics-table' ) );
  72
  73                 # Statistic - pages
  74                 $text .= $this->getPageStats();
  75
  76                 # Statistic - edits
  77                 $text .= $this->getEditStats();
  78
  79                 # Statistic - users
  80                 $text .= $this->getUserStats();
  81
  82                 # Statistic - usergroups
  83                 $text .= $this->getGroupStats();
  84                 $text .= $viewsStats;
  85
  86                 # Statistic - popular pages
  87                 if ( !$wgDisableCounters && !$wgMiserMode ) {
  88                         $text .= $this->getMostViewedPages();
  89                 }
  90
  91                 # Statistic - other
  92                 $extraStats = array();
  93                 if ( wfRunHooks( 'SpecialStatsAddExtra', array( &$extraStats ) ) ) {
  94                         $text .= $this->getOtherStats( $extraStats );
  95                 }
  96
  97                 $text .= Xml::closeElement( 'table' );
  98
  99                 # Customizable footer
 100                 $footer = $this->msg( 'statistics-footer' );
 101                 if ( !$footer->isBlank() ) {
 102                         $text .= "\n" . $footer->parse();
 103                 }
 104
 105                 $this->getOutput()->addHTML( $text );
 106         }
 107
 108         /**
 109          * Format a row
 110          * @param $text  String: description of the row
 111          * @param $number  Float: a statistical number
 112          * @param $trExtraParams  Array: params to table row, see Html::elememt
 113          * @param $descMsg  String: message key
 114          * @param array|string $descMsgParam Message parameters
 115          * @return string table row in HTML format
 116          */
 117         private function formatRow( $text, $number, $trExtraParams = array(), $descMsg = '', $descMsgParam = '' ) {
 118                 if ( $descMsg ) {
 119                         $msg = $this->msg( $descMsg, $descMsgParam );
 120                         if ( $msg->exists() ) {
 121                                 $descriptionText = $this->msg( 'parentheses' )->rawParams( $msg->parse() )->escaped();
 122                                 $text .= "<br />" . Xml::element( 'small', array( 'class' => 'mw-statistic-desc' ),
 123                                         " $descriptionText" );
 124                         }
 125                 }
 126                 return Html::rawElement( 'tr', $trExtraParams,
 127                         Html::rawElement( 'td', array(), $text ) .
 128                         Html::rawElement( 'td', array( 'class' => 'mw-statistics-numbers' ), $number )
 129                 );
 130         }
 131
 132         /**
 133          * Each of these methods is pretty self-explanatory, get a particular
 134          * row for the table of statistics
 135          * @return string
 136          */
 137         private function getPageStats() {
 138                 return Xml::openElement( 'tr' ) .
 139                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-header-pages' )->parse() ) .
 140                         Xml::closeElement( 'tr' ) .
 141                                 $this->formatRow( Linker::linkKnown( SpecialPage::getTitleFor( 'Allpages' ),
 142                                                 $this->msg( 'statistics-articles' )->parse() ),
 143                                                 $this->getLanguage()->formatNum( $this->good ),
 144                                                 array( 'class' => 'mw-statistics-articles' ) ) .
 145                                 $this->formatRow( $this->msg( 'statistics-pages' )->parse(),
 146                                                 $this->getLanguage()->formatNum( $this->total ),
 147                                                 array( 'class' => 'mw-statistics-pages' ),
 148                                                 'statistics-pages-desc' ) .
 149                                 $this->formatRow( Linker::linkKnown( SpecialPage::getTitleFor( 'Listfiles' ),
 150                                                 $this->msg( 'statistics-files' )->parse() ),
 151                                                 $this->getLanguage()->formatNum( $this->images ),
 152                                                 array( 'class' => 'mw-statistics-files' ) );
 153         }
 154         private function getEditStats() {
 155                 return Xml::openElement( 'tr' ) .
 156                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-header-edits' )->parse() ) .
 157                         Xml::closeElement( 'tr' ) .
 158                                 $this->formatRow( $this->msg( 'statistics-edits' )->parse(),
 159                                                 $this->getLanguage()->formatNum( $this->edits ),
 160                                                 array( 'class' => 'mw-statistics-edits' ) ) .
 161                                 $this->formatRow( $this->msg( 'statistics-edits-average' )->parse(),
 162                                                 $this->getLanguage()->formatNum( sprintf( '%.2f', $this->total ? $this->edits / $this->total : 0 ) ),
 163                                                 array( 'class' => 'mw-statistics-edits-average' ) );
 164         }
 165
 166         private function getUserStats() {
 167                 global $wgActiveUserDays;
 168                 return Xml::openElement( 'tr' ) .
 169                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-header-users' )->parse() ) .
 170                         Xml::closeElement( 'tr' ) .
 171                                 $this->formatRow( $this->msg( 'statistics-users' )->parse(),
 172                                                 $this->getLanguage()->formatNum( $this->users ),
 173                                                 array( 'class' => 'mw-statistics-users' ) ) .
 174                                 $this->formatRow( $this->msg( 'statistics-users-active' )->parse() . ' ' .
 175                                                         Linker::linkKnown(
 176                                                                 SpecialPage::getTitleFor( 'Activeusers' ),
 177                                                                 $this->msg( 'listgrouprights-members' )->escaped()
 178                                                         ),
 179                                                 $this->getLanguage()->formatNum( $this->activeUsers ),
 180                                                 array( 'class' => 'mw-statistics-users-active' ),
 181                                                 'statistics-users-active-desc',
 182                                                 $this->getLanguage()->formatNum( $wgActiveUserDays ) );
 183         }
 184
 185         private function getGroupStats() {
 186                 global $wgGroupPermissions, $wgImplicitGroups;
 187                 $text = '';
 188                 foreach ( $wgGroupPermissions as $group => $permissions ) {
 189                         # Skip generic * and implicit groups
 190                         if ( in_array( $group, $wgImplicitGroups ) || $group == '*' ) {
 191                                 continue;
 192                         }
 193                         $groupname = htmlspecialchars( $group );
 194                         $msg = $this->msg( 'group-' . $groupname );
 195                         if ( $msg->isBlank() ) {
 196                                 $groupnameLocalized = $groupname;
 197                         } else {
 198                                 $groupnameLocalized = $msg->text();
 199                         }
 200                         $msg = $this->msg( 'grouppage-' . $groupname )->inContentLanguage();
 201                         if ( $msg->isBlank() ) {
 202                                 $grouppageLocalized = MWNamespace::getCanonicalName( NS_PROJECT ) . ':' . $groupname;
 203                         } else {
 204                                 $grouppageLocalized = $msg->text();
 205                         }
 206                         $linkTarget = Title::newFromText( $grouppageLocalized );
 207                         $grouppage = Linker::link(
 208                                 $linkTarget,
 209                                 htmlspecialchars( $groupnameLocalized )
 210                         );
 211                         $grouplink = Linker::linkKnown(
 212                                 SpecialPage::getTitleFor( 'Listusers' ),
 213                                 $this->msg( 'listgrouprights-members' )->escaped(),
 214                                 array(),
 215                                 array( 'group' => $group )
 216                         );
 217                         # Add a class when a usergroup contains no members to allow hiding these rows
 218                         $classZero = '';
 219                         $countUsers = SiteStats::numberingroup( $groupname );
 220                         if ( $countUsers == 0 ) {
 221                                 $classZero = ' statistics-group-zero';
 222                         }
 223                         $text .= $this->formatRow( $grouppage . ' ' . $grouplink,
 224                                 $this->getLanguage()->formatNum( $countUsers ),
 225                                 array( 'class' => 'statistics-group-' . Sanitizer::escapeClass( $group ) . $classZero ) );
 226                 }
 227                 return $text;
 228         }
 229
 230         private function getViewsStats() {
 231                 return Xml::openElement( 'tr' ) .
 232                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-header-views' )->parse() ) .
 233                         Xml::closeElement( 'tr' ) .
 234                                 $this->formatRow( $this->msg( 'statistics-views-total' )->parse(),
 235                                         $this->getLanguage()->formatNum( $this->views ),
 236                                                 array( 'class' => 'mw-statistics-views-total' ), 'statistics-views-total-desc' ) .
 237                                 $this->formatRow( $this->msg( 'statistics-views-peredit' )->parse(),
 238                                         $this->getLanguage()->formatNum( sprintf( '%.2f', $this->edits ?
 239                                                 $this->views / $this->edits : 0 ) ),
 240                                                 array( 'class' => 'mw-statistics-views-peredit' ) );
 241         }
 242
 243         private function getMostViewedPages() {
 244                 $text = '';
 245                 $dbr = wfGetDB( DB_SLAVE );
 246                 $res = $dbr->select(
 247                                 'page',
 248                                 array(
 249                                         'page_namespace',
 250                                         'page_title',
 251                                         'page_counter',
 252                                 ),
 253                                 array(
 254                                         'page_is_redirect' => 0,
 255                                         'page_counter > 0',
 256                                 ),
 257                                 __METHOD__,
 258                                 array(
 259                                         'ORDER BY' => 'page_counter DESC',
 260                                         'LIMIT' => 10,
 261                                 )
 262                         );
 263                         if ( $res->numRows() > 0 ) {
 264                                 $text .= Xml::openElement( 'tr' );
 265                                 $text .= Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-mostpopular' )->parse() );
 266                                 $text .= Xml::closeElement( 'tr' );
 267                                 foreach ( $res as $row ) {
 268                                         $title = Title::makeTitleSafe( $row->page_namespace, $row->page_title );
 269                                         if ( $title instanceof Title ) {
 270                                                 $text .= $this->formatRow( Linker::link( $title ),
 271                                                                 $this->getLanguage()->formatNum( $row->page_counter ) );
 272
 273                                         }
 274                                 }
 275                                 $res->free();
 276                         }
 277                 return $text;
 278         }
 279
 280         /**
 281          * Conversion of external statistics into an internal representation
 282          * Following a ([<header-message>][<item-message>] = number) pattern
 283          *
 284          * @param array $stats
 285          * @return string
 286          */
 287         private function getOtherStats( array $stats ) {
 288                 $return = '';
 289
 290                 foreach ( $stats as $header => $items ) {
 291                         // Identify the structure used
 292                         if ( is_array( $items ) ) {
 293
 294                                 // Ignore headers that are recursively set as legacy header
 295                                 if ( $header !== 'statistics-header-hooks' ) {
 296                                         $return .= $this->formatRowHeader( $header );
 297                                 }
 298
 299                                 // Collect all items that belong to the same header
 300                                 foreach ( $items as $key => $value ) {
 301                                         $name = $this->msg( $key )->parse();
 302                                         $number = htmlspecialchars( $value );
 303
 304                                         $return .= $this->formatRow( $name, $this->getLanguage()->formatNum( $number ), array( 'class' => 'mw-statistics-hook' ) );
 305                                 }
 306                         } else {
 307                                 // Create the legacy header only once
 308                                 if ( $return === '' ) {
 309                                         $return .= $this->formatRowHeader( 'statistics-header-hooks' );
 310                                 }
 311
 312                                 // Recursively remap the legacy structure
 313                                 $return .= $this->getOtherStats( array( 'statistics-header-hooks' => array( $header => $items ) ) );
 314                         }
 315                 }
 316
 317                 return $return;
 318         }
 319
 320         /**
 321          * Format row header
 322          *
 323          * @param string $header
 324          * @return string
 325          */
 326         private function formatRowHeader( $header ) {
 327                 return Xml::openElement( 'tr' ) .
 328                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( $header )->parse() ) .
 329                         Xml::closeElement( 'tr' );
 330         }
 331
 332         protected function getGroupName() {
 333                 return 'wiki';
 334         }
 335 }