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[autoinstallsdev/mediawiki.git] / includes / filerepo / file / UnregisteredLocalFile.php
diff --git a/includes/filerepo/file/UnregisteredLocalFile.php b/includes/filerepo/file/UnregisteredLocalFile.php
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+<?php
+/**
+ * File without associated database record.
+ *
+ * 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
+ * @ingroup FileAbstraction
+ */
+
+/**
+ * A file object referring to either a standalone local file, or a file in a
+ * local repository with no database, for example an FileRepo repository.
+ *
+ * Read-only.
+ *
+ * @todo Currently it doesn't really work in the repository role, there are
+ * lots of functions missing. It is used by the WebStore extension in the
+ * standalone role.
+ *
+ * @ingroup FileAbstraction
+ */
+class UnregisteredLocalFile extends File {
+       /** @var Title */
+       protected $title;
+
+       /** @var string */
+       protected $path;
+
+       /** @var bool|string */
+       protected $mime;
+
+       /** @var array Dimension data */
+       protected $dims;
+
+       /** @var bool|string Handler-specific metadata which will be saved in the img_metadata field */
+       protected $metadata;
+
+       /** @var MediaHandler */
+       public $handler;
+
+       /**
+        * @param string $path Storage path
+        * @param string $mime
+        * @return UnregisteredLocalFile
+        */
+       static function newFromPath( $path, $mime ) {
+               return new self( false, false, $path, $mime );
+       }
+
+       /**
+        * @param Title $title
+        * @param FileRepo $repo
+        * @return UnregisteredLocalFile
+        */
+       static function newFromTitle( $title, $repo ) {
+               return new self( $title, $repo, false, false );
+       }
+
+       /**
+        * Create an UnregisteredLocalFile based on a path or a (title,repo) pair.
+        * A FileRepo object is not required here, unlike most other File classes.
+        *
+        * @throws MWException
+        * @param Title|bool $title
+        * @param FileRepo|bool $repo
+        * @param string|bool $path
+        * @param string|bool $mime
+        */
+       function __construct( $title = false, $repo = false, $path = false, $mime = false ) {
+               if ( !( $title && $repo ) && !$path ) {
+                       throw new MWException( __METHOD__ .
+                               ': not enough parameters, must specify title and repo, or a full path' );
+               }
+               if ( $title instanceof Title ) {
+                       $this->title = File::normalizeTitle( $title, 'exception' );
+                       $this->name = $repo->getNameFromTitle( $title );
+               } else {
+                       $this->name = basename( $path );
+                       $this->title = File::normalizeTitle( $this->name, 'exception' );
+               }
+               $this->repo = $repo;
+               if ( $path ) {
+                       $this->path = $path;
+               } else {
+                       $this->assertRepoDefined();
+                       $this->path = $repo->getRootDirectory() . '/' .
+                               $repo->getHashPath( $this->name ) . $this->name;
+               }
+               if ( $mime ) {
+                       $this->mime = $mime;
+               }
+               $this->dims = [];
+       }
+
+       /**
+        * @param int $page
+        * @return bool
+        */
+       private function cachePageDimensions( $page = 1 ) {
+               $page = (int)$page;
+               if ( $page < 1 ) {
+                       $page = 1;
+               }
+
+               if ( !isset( $this->dims[$page] ) ) {
+                       if ( !$this->getHandler() ) {
+                               return false;
+                       }
+                       $this->dims[$page] = $this->handler->getPageDimensions( $this, $page );
+               }
+
+               return $this->dims[$page];
+       }
+
+       /**
+        * @param int $page
+        * @return int
+        */
+       function getWidth( $page = 1 ) {
+               $dim = $this->cachePageDimensions( $page );
+
+               return $dim['width'];
+       }
+
+       /**
+        * @param int $page
+        * @return int
+        */
+       function getHeight( $page = 1 ) {
+               $dim = $this->cachePageDimensions( $page );
+
+               return $dim['height'];
+       }
+
+       /**
+        * @return bool|string
+        */
+       function getMimeType() {
+               if ( !isset( $this->mime ) ) {
+                       $magic = MimeMagic::singleton();
+                       $this->mime = $magic->guessMimeType( $this->getLocalRefPath() );
+               }
+
+               return $this->mime;
+       }
+
+       /**
+        * @param string $filename
+        * @return array|bool
+        */
+       function getImageSize( $filename ) {
+               if ( !$this->getHandler() ) {
+                       return false;
+               }
+
+               return $this->handler->getImageSize( $this, $this->getLocalRefPath() );
+       }
+
+       /**
+        * @return int
+        */
+       function getBitDepth() {
+               $gis = $this->getImageSize( $this->getLocalRefPath() );
+
+               if ( !$gis || !isset( $gis['bits'] ) ) {
+                       return 0;
+               }
+               return $gis['bits'];
+       }
+
+       /**
+        * @return bool
+        */
+       function getMetadata() {
+               if ( !isset( $this->metadata ) ) {
+                       if ( !$this->getHandler() ) {
+                               $this->metadata = false;
+                       } else {
+                               $this->metadata = $this->handler->getMetadata( $this, $this->getLocalRefPath() );
+                       }
+               }
+
+               return $this->metadata;
+       }
+
+       /**
+        * @return bool|string
+        */
+       function getURL() {
+               if ( $this->repo ) {
+                       return $this->repo->getZoneUrl( 'public' ) . '/' .
+                               $this->repo->getHashPath( $this->name ) . rawurlencode( $this->name );
+               } else {
+                       return false;
+               }
+       }
+
+       /**
+        * @return bool|int
+        */
+       function getSize() {
+               $this->assertRepoDefined();
+
+               return $this->repo->getFileSize( $this->path );
+       }
+
+       /**
+        * Optimize getLocalRefPath() by using an existing local reference.
+        * The file at the path of $fsFile should not be deleted (or at least
+        * not until the end of the request). This is mostly a performance hack.
+        *
+        * @param FSFile $fsFile
+        * @return void
+        */
+       public function setLocalReference( FSFile $fsFile ) {
+               $this->fsFile = $fsFile;
+       }
+}