includes/WikiFilePage.php

   1 <?php
   2 /**
   3  * Special handling for file pages
   4  *
   5  * @ingroup Media
   6  */
   7 class WikiFilePage extends WikiPage {
   8         protected $mFile = false;                               // !< File object
   9         protected $mRepo = null;                            // !<
  10         protected $mFileLoaded = false;             // !<
  11         protected $mDupes = null;                               // !<
  12
  13         function __construct( $title ) {
  14                 parent::__construct( $title );
  15                 $this->mDupes = null;
  16                 $this->mRepo = null;
  17         }
  18
  19         public function getActionOverrides() {
  20                 return array( 'revert' => 'RevertFileAction' );
  21         }
  22
  23         /**
  24          * @param $file File:
  25          * @return void
  26          */
  27         public function setFile( $file ) {
  28                 $this->mFile = $file;
  29                 $this->mFileLoaded = true;
  30         }
  31
  32         protected function loadFile() {
  33                 if ( $this->mFileLoaded ) {
  34                         return true;
  35                 }
  36                 $this->mFileLoaded = true;
  37
  38                 $this->mFile = false;
  39                 if ( !$this->mFile ) {
  40                         $this->mFile = wfFindFile( $this->mTitle );
  41                         if ( !$this->mFile ) {
  42                                 $this->mFile = wfLocalFile( $this->mTitle ); // always a File
  43                         }
  44                 }
  45                 $this->mRepo = $this->mFile->getRepo();
  46         }
  47
  48         public function getRedirectTarget() {
  49                 $this->loadFile();
  50                 if ( $this->mFile->isLocal() ) {
  51                         return parent::getRedirectTarget();
  52                 }
  53                 // Foreign image page
  54                 $from = $this->mFile->getRedirected();
  55                 $to = $this->mFile->getName();
  56                 if ( $from == $to ) {
  57                         return null;
  58                 }
  59                 return $this->mRedirectTarget = Title::makeTitle( NS_FILE, $to );
  60         }
  61
  62         public function followRedirect() {
  63                 $this->loadFile();
  64                 if ( $this->mFile->isLocal() ) {
  65                         return parent::followRedirect();
  66                 }
  67                 $from = $this->mFile->getRedirected();
  68                 $to = $this->mFile->getName();
  69                 if ( $from == $to ) {
  70                         return false;
  71                 }
  72                 return Title::makeTitle( NS_FILE, $to );
  73         }
  74
  75         public function isRedirect( $text = false ) {
  76                 $this->loadFile();
  77                 if ( $this->mFile->isLocal() ) {
  78                         return parent::isRedirect( $text );
  79                 }
  80
  81                 return (bool)$this->mFile->getRedirected();
  82         }
  83
  84         public function isLocal() {
  85                 $this->loadFile();
  86                 return $this->mFile->isLocal();
  87         }
  88
  89         public function getFile() {
  90                 $this->loadFile();
  91                 return $this->mFile;
  92         }
  93
  94         public function getDuplicates() {
  95                 $this->loadFile();
  96                 if ( !is_null( $this->mDupes ) ) {
  97                         return $this->mDupes;
  98                 }
  99                 $hash = $this->mFile->getSha1();
 100                 if ( !( $hash ) ) {
 101                         return $this->mDupes = array();
 102                 }
 103                 $dupes = RepoGroup::singleton()->findBySha1( $hash );
 104                 // Remove duplicates with self and non matching file sizes
 105                 $self = $this->mFile->getRepoName() . ':' . $this->mFile->getName();
 106                 $size = $this->mFile->getSize();
 107                 foreach ( $dupes as $index => $file ) {
 108                         $key = $file->getRepoName() . ':' . $file->getName();
 109                         if ( $key == $self ) {
 110                                 unset( $dupes[$index] );
 111                         }
 112                         if ( $file->getSize() != $size ) {
 113                                 unset( $dupes[$index] );
 114                         }
 115                 }
 116                 $this->mDupes = $dupes;
 117                 return $this->mDupes;
 118         }
 119
 120         /**
 121          * Override handling of action=purge
 122          */
 123         public function doPurge() {
 124                 $this->loadFile();
 125                 if ( $this->mFile->exists() ) {
 126                         wfDebug( 'ImagePage::doPurge purging ' . $this->mFile->getName() . "\n" );
 127                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 128                         $update->doUpdate();
 129                         $this->mFile->upgradeRow();
 130                         $this->mFile->purgeCache();
 131                 } else {
 132                         wfDebug( 'ImagePage::doPurge no image for ' . $this->mFile->getName() . "; limiting purge to cache only\n" );
 133                         // even if the file supposedly doesn't exist, force any cached information
 134                         // to be updated (in case the cached information is wrong)
 135                         $this->mFile->purgeCache();
 136                 }
 137                 parent::doPurge();
 138         }
 139 }