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 $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;
  40
  41                 $miserMode = $this->getConfig()->get( 'MiserMode' );
  42
  43                 $this->setHeaders();
  44                 $this->getOutput()->addModuleStyles( 'mediawiki.special' );
  45
  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                 $this->hook = '';
  53
  54                 # Set active user count
  55                 if ( !$miserMode ) {
  56                         $key = wfMemcKey( 'sitestats', 'activeusers-updated' );
  57                         // Re-calculate the count if the last tally is old...
  58                         if ( !$wgMemc->get( $key ) ) {
  59                                 $dbw = wfGetDB( DB_MASTER );
  60                                 SiteStatsUpdate::cacheUpdate( $dbw );
  61                                 $wgMemc->set( $key, '1', 24 * 3600 ); // don't update for 1 day
  62                         }
  63                 }
  64
  65                 $text = Xml::openElement( 'table', array( 'class' => 'wikitable mw-statistics-table' ) );
  66
  67                 # Statistic - pages
  68                 $text .= $this->getPageStats();
  69
  70                 # Statistic - edits
  71                 $text .= $this->getEditStats();
  72
  73                 # Statistic - users
  74                 $text .= $this->getUserStats();
  75
  76                 # Statistic - usergroups
  77                 $text .= $this->getGroupStats();
  78
  79                 # Statistic - other
  80                 $extraStats = array();
  81                 if ( Hooks::run( 'SpecialStatsAddExtra', array( &$extraStats, $this->getContext() ) ) ) {
  82                         $text .= $this->getOtherStats( $extraStats );
  83                 }
  84
  85                 $text .= Xml::closeElement( 'table' );
  86
  87                 # Customizable footer
  88                 $footer = $this->msg( 'statistics-footer' );
  89                 if ( !$footer->isBlank() ) {
  90                         $text .= "\n" . $footer->parse();
  91                 }
  92
  93                 $this->getOutput()->addHTML( $text );
  94         }
  95
  96         /**
  97          * Format a row
  98          * @param string $text Description of the row
  99          * @param float $number A statistical number
 100          * @param array $trExtraParams Params to table row, see Html::elememt
 101          * @param string $descMsg Message key
 102          * @param array|string $descMsgParam Message parameters
 103          * @return string Table row in HTML format
 104          */
 105         private function formatRow( $text, $number, $trExtraParams = array(),
 106                 $descMsg = '', $descMsgParam = ''
 107         ) {
 108                 if ( $descMsg ) {
 109                         $msg = $this->msg( $descMsg, $descMsgParam );
 110                         if ( $msg->exists() ) {
 111                                 $descriptionText = $this->msg( 'parentheses' )->rawParams( $msg->parse() )->escaped();
 112                                 $text .= "<br />" . Xml::element( 'small', array( 'class' => 'mw-statistic-desc' ),
 113                                         " $descriptionText" );
 114                         }
 115                 }
 116
 117                 return Html::rawElement( 'tr', $trExtraParams,
 118                         Html::rawElement( 'td', array(), $text ) .
 119                         Html::rawElement( 'td', array( 'class' => 'mw-statistics-numbers' ), $number )
 120                 );
 121         }
 122
 123         /**
 124          * Each of these methods is pretty self-explanatory, get a particular
 125          * row for the table of statistics
 126          * @return string
 127          */
 128         private function getPageStats() {
 129                 $pageStatsHtml = Xml::openElement( 'tr' ) .
 130                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-header-pages' )->parse() ) .
 131                         Xml::closeElement( 'tr' ) .
 132                                 $this->formatRow( Linker::linkKnown( SpecialPage::getTitleFor( 'Allpages' ),
 133                                         $this->msg( 'statistics-articles' )->parse() ),
 134                                         $this->getLanguage()->formatNum( $this->good ),
 135                                         array( 'class' => 'mw-statistics-articles' ) ) .
 136                                 $this->formatRow( $this->msg( 'statistics-pages' )->parse(),
 137                                         $this->getLanguage()->formatNum( $this->total ),
 138                                         array( 'class' => 'mw-statistics-pages' ),
 139                                         'statistics-pages-desc' );
 140
 141                 // Show the image row only, when there are files or upload is possible
 142                 if ( $this->images !== 0 || $this->getConfig()->get( 'EnableUploads' ) ) {
 143                         $pageStatsHtml .= $this->formatRow( Linker::linkKnown( SpecialPage::getTitleFor( 'MediaStatistics' ),
 144                                 $this->msg( 'statistics-files' )->parse() ),
 145                                 $this->getLanguage()->formatNum( $this->images ),
 146                                 array( 'class' => 'mw-statistics-files' ) );
 147                 }
 148
 149                 return $pageStatsHtml;
 150         }
 151
 152         private function getEditStats() {
 153                 return Xml::openElement( 'tr' ) .
 154                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( 'statistics-header-edits' )->parse() ) .
 155                         Xml::closeElement( 'tr' ) .
 156                         $this->formatRow( $this->msg( 'statistics-edits' )->parse(),
 157                                 $this->getLanguage()->formatNum( $this->edits ),
 158                                 array( 'class' => 'mw-statistics-edits' )
 159                         ) .
 160                         $this->formatRow( $this->msg( 'statistics-edits-average' )->parse(),
 161                                 $this->getLanguage()
 162                                         ->formatNum( sprintf( '%.2f', $this->total ? $this->edits / $this->total : 0 ) ),
 163                                 array( 'class' => 'mw-statistics-edits-average' )
 164                         );
 165         }
 166
 167         private function getUserStats() {
 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                         ) .
 175                         $this->formatRow( $this->msg( 'statistics-users-active' )->parse() . ' ' .
 176                                 Linker::linkKnown(
 177                                         SpecialPage::getTitleFor( 'Activeusers' ),
 178                                         $this->msg( 'listgrouprights-members' )->escaped()
 179                                 ),
 180                                 $this->getLanguage()->formatNum( $this->activeUsers ),
 181                                 array( 'class' => 'mw-statistics-users-active' ),
 182                                 'statistics-users-active-desc',
 183                                 $this->getLanguage()->formatNum( $this->getConfig()->get( 'ActiveUserDays' ) )
 184                         );
 185         }
 186
 187         private function getGroupStats() {
 188                 $text = '';
 189                 foreach ( $this->getConfig()->get( 'GroupPermissions' ) as $group => $permissions ) {
 190                         # Skip generic * and implicit groups
 191                         if ( in_array( $group, $this->getConfig()->get( 'ImplicitGroups' ) ) || $group == '*' ) {
 192                                 continue;
 193                         }
 194                         $groupname = htmlspecialchars( $group );
 195                         $msg = $this->msg( 'group-' . $groupname );
 196                         if ( $msg->isBlank() ) {
 197                                 $groupnameLocalized = $groupname;
 198                         } else {
 199                                 $groupnameLocalized = $msg->text();
 200                         }
 201                         $msg = $this->msg( 'grouppage-' . $groupname )->inContentLanguage();
 202                         if ( $msg->isBlank() ) {
 203                                 $grouppageLocalized = MWNamespace::getCanonicalName( NS_PROJECT ) . ':' . $groupname;
 204                         } else {
 205                                 $grouppageLocalized = $msg->text();
 206                         }
 207                         $linkTarget = Title::newFromText( $grouppageLocalized );
 208
 209                         if ( $linkTarget ) {
 210                                 $grouppage = Linker::link(
 211                                         $linkTarget,
 212                                         htmlspecialchars( $groupnameLocalized )
 213                                 );
 214                         } else {
 215                                 $grouppage = htmlspecialchars( $groupnameLocalized );
 216                         }
 217
 218                         $grouplink = Linker::linkKnown(
 219                                 SpecialPage::getTitleFor( 'Listusers' ),
 220                                 $this->msg( 'listgrouprights-members' )->escaped(),
 221                                 array(),
 222                                 array( 'group' => $group )
 223                         );
 224                         # Add a class when a usergroup contains no members to allow hiding these rows
 225                         $classZero = '';
 226                         $countUsers = SiteStats::numberingroup( $groupname );
 227                         if ( $countUsers == 0 ) {
 228                                 $classZero = ' statistics-group-zero';
 229                         }
 230                         $text .= $this->formatRow( $grouppage . ' ' . $grouplink,
 231                                 $this->getLanguage()->formatNum( $countUsers ),
 232                                 array( 'class' => 'statistics-group-' . Sanitizer::escapeClass( $group ) . $classZero ) );
 233                 }
 234
 235                 return $text;
 236         }
 237
 238         /**
 239          * Conversion of external statistics into an internal representation
 240          * Following a ([<header-message>][<item-message>] = number) pattern
 241          *
 242          * @param array $stats
 243          * @return string
 244          */
 245         private function getOtherStats( array $stats ) {
 246                 $return = '';
 247
 248                 foreach ( $stats as $header => $items ) {
 249                         // Identify the structure used
 250                         if ( is_array( $items ) ) {
 251
 252                                 // Ignore headers that are recursively set as legacy header
 253                                 if ( $header !== 'statistics-header-hooks' ) {
 254                                         $return .= $this->formatRowHeader( $header );
 255                                 }
 256
 257                                 // Collect all items that belong to the same header
 258                                 foreach ( $items as $key => $value ) {
 259                                         if ( is_array( $value ) ) {
 260                                                 $name = $value['name'];
 261                                                 $number = $value['number'];
 262                                         } else {
 263                                                 $name = $this->msg( $key )->parse();
 264                                                 $number = $value;
 265                                         }
 266
 267                                         $return .= $this->formatRow(
 268                                                 $name,
 269                                                 $this->getLanguage()->formatNum( htmlspecialchars( $number ) ),
 270                                                 array( 'class' => 'mw-statistics-hook', 'id' => 'mw-' . $key )
 271                                         );
 272                                 }
 273                         } else {
 274                                 // Create the legacy header only once
 275                                 if ( $return === '' ) {
 276                                         $return .= $this->formatRowHeader( 'statistics-header-hooks' );
 277                                 }
 278
 279                                 // Recursively remap the legacy structure
 280                                 $return .= $this->getOtherStats( array( 'statistics-header-hooks' =>
 281                                         array( $header => $items ) ) );
 282                         }
 283                 }
 284
 285                 return $return;
 286         }
 287
 288         /**
 289          * Format row header
 290          *
 291          * @param string $header
 292          * @return string
 293          */
 294         private function formatRowHeader( $header ) {
 295                 return Xml::openElement( 'tr' ) .
 296                         Xml::tags( 'th', array( 'colspan' => '2' ), $this->msg( $header )->parse() ) .
 297                         Xml::closeElement( 'tr' );
 298         }
 299
 300         protected function getGroupName() {
 301                 return 'wiki';
 302         }
 303 }