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<?php
/**
* Special handling for file pages.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
/**
* Special handling for file pages
*
* @ingroup Media
*/
class WikiFilePage extends WikiPage {
/**
* @var File
*/
protected $mFile = false; // !< File object
protected $mRepo = null; // !<
protected $mFileLoaded = false; // !<
protected $mDupes = null; // !<
public function __construct( $title ) {
parent::__construct( $title );
$this->mDupes = null;
$this->mRepo = null;
}
/**
* @param File $file
*/
public function setFile( $file ) {
$this->mFile = $file;
$this->mFileLoaded = true;
}
/**
* @return bool
*/
protected function loadFile() {
if ( $this->mFileLoaded ) {
return true;
}
$this->mFileLoaded = true;
$this->mFile = wfFindFile( $this->mTitle );
if ( !$this->mFile ) {
$this->mFile = wfLocalFile( $this->mTitle ); // always a File
}
$this->mRepo = $this->mFile->getRepo();
return true;
}
/**
* @return mixed|null|Title
*/
public function getRedirectTarget() {
$this->loadFile();
if ( $this->mFile->isLocal() ) {
return parent::getRedirectTarget();
}
// Foreign image page
$from = $this->mFile->getRedirected();
$to = $this->mFile->getName();
if ( $from == $to ) {
return null;
}
$this->mRedirectTarget = Title::makeTitle( NS_FILE, $to );
return $this->mRedirectTarget;
}
/**
* @return bool|mixed|Title
*/
public function followRedirect() {
$this->loadFile();
if ( $this->mFile->isLocal() ) {
return parent::followRedirect();
}
$from = $this->mFile->getRedirected();
$to = $this->mFile->getName();
if ( $from == $to ) {
return false;
}
return Title::makeTitle( NS_FILE, $to );
}
/**
* @return bool
*/
public function isRedirect() {
$this->loadFile();
if ( $this->mFile->isLocal() ) {
return parent::isRedirect();
}
return (bool)$this->mFile->getRedirected();
}
/**
* @return bool
*/
public function isLocal() {
$this->loadFile();
return $this->mFile->isLocal();
}
/**
* @return bool|File
*/
public function getFile() {
$this->loadFile();
return $this->mFile;
}
/**
* @return array|null
*/
public function getDuplicates() {
$this->loadFile();
if ( !is_null( $this->mDupes ) ) {
return $this->mDupes;
}
$hash = $this->mFile->getSha1();
if ( !( $hash ) ) {
$this->mDupes = array();
return $this->mDupes;
}
$dupes = RepoGroup::singleton()->findBySha1( $hash );
// Remove duplicates with self and non matching file sizes
$self = $this->mFile->getRepoName() . ':' . $this->mFile->getName();
$size = $this->mFile->getSize();
/**
* @var $file File
*/
foreach ( $dupes as $index => $file ) {
$key = $file->getRepoName() . ':' . $file->getName();
if ( $key == $self ) {
unset( $dupes[$index] );
}
if ( $file->getSize() != $size ) {
unset( $dupes[$index] );
}
}
$this->mDupes = $dupes;
return $this->mDupes;
}
/**
* Override handling of action=purge
* @return bool
*/
public function doPurge() {
$this->loadFile();
if ( $this->mFile->exists() ) {
wfDebug( 'ImagePage::doPurge purging ' . $this->mFile->getName() . "\n" );
$update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
$update->doUpdate();
$this->mFile->upgradeRow();
$this->mFile->purgeCache( array( 'forThumbRefresh' => true ) );
} else {
wfDebug( 'ImagePage::doPurge no image for '
. $this->mFile->getName() . "; limiting purge to cache only\n" );
// even if the file supposedly doesn't exist, force any cached information
// to be updated (in case the cached information is wrong)
$this->mFile->purgeCache( array( 'forThumbRefresh' => true ) );
}
if ( $this->mRepo ) {
// Purge redirect cache
$this->mRepo->invalidateImageRedirect( $this->mTitle );
}
return parent::doPurge();
}
/**
* Get the categories this file is a member of on the wiki where it was uploaded.
* For local files, this is the same as getCategories().
* For foreign API files (InstantCommons), this is not supported currently.
* Results will include hidden categories.
*
* @return TitleArray|Title[]
* @since 1.23
*/
public function getForeignCategories() {
$this->loadFile();
$title = $this->mTitle;
$file = $this->mFile;
if ( !$file instanceof LocalFile ) {
wfDebug( __CLASS__ . '::' . __METHOD__ . " is not supported for this file\n" );
return TitleArray::newFromResult( new FakeResultWrapper( array() ) );
}
/** @var LocalRepo $repo */
$repo = $file->getRepo();
$dbr = $repo->getSlaveDB();
$res = $dbr->select(
array( 'page', 'categorylinks' ),
array(
'page_title' => 'cl_to',
'page_namespace' => NS_CATEGORY,
),
array(
'page_namespace' => $title->getNamespace(),
'page_title' => $title->getDBkey(),
),
__METHOD__,
array(),
array( 'categorylinks' => array( 'INNER JOIN', 'page_id = cl_from' ) )
);
return TitleArray::newFromResult( $res );
}
}
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