mirror of
https://github.com/YunoHost-Apps/mediawiki_ynh.git
synced 2024-09-03 19:46:05 +02:00
94 lines
3.2 KiB
PHP
94 lines
3.2 KiB
PHP
<?php
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/**
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* Handler for JPEG images.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Media
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*/
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/**
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* JPEG specific handler.
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* Inherits most stuff from BitmapHandler, just here to do the metadata handler differently.
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*
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* Metadata stuff common to Jpeg and built-in Tiff (not PagedTiffHandler) is
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* in ExifBitmapHandler.
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*
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* @ingroup Media
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*/
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class JpegHandler extends ExifBitmapHandler {
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function getMetadata( $image, $filename ) {
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try {
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$meta = BitmapMetadataHandler::Jpeg( $filename );
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if ( !is_array( $meta ) ) {
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// This should never happen, but doesn't hurt to be paranoid.
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throw new MWException( 'Metadata array is not an array' );
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}
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$meta['MEDIAWIKI_EXIF_VERSION'] = Exif::version();
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return serialize( $meta );
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}
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catch ( MWException $e ) {
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// BitmapMetadataHandler throws an exception in certain exceptional cases like if file does not exist.
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wfDebug( __METHOD__ . ': ' . $e->getMessage() . "\n" );
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/* This used to use 0 (ExifBitmapHandler::OLD_BROKEN_FILE) for the cases
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* * No metadata in the file
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* * Something is broken in the file.
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* However, if the metadata support gets expanded then you can't tell if the 0 is from
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* a broken file, or just no props found. A broken file is likely to stay broken, but
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* a file which had no props could have props once the metadata support is improved.
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* Thus switch to using -1 to denote only a broken file, and use an array with only
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* MEDIAWIKI_EXIF_VERSION to denote no props.
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*/
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return ExifBitmapHandler::BROKEN_FILE;
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}
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}
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/**
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* @param $file File
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* @param array $params Rotate parameters.
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* 'rotation' clockwise rotation in degrees, allowed are multiples of 90
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* @since 1.21
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* @return bool
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*/
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public function rotate( $file, $params ) {
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global $wgJpegTran;
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$rotation = ( $params['rotation'] + $this->getRotation( $file ) ) % 360;
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if ( $wgJpegTran && is_file( $wgJpegTran ) ) {
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$cmd = wfEscapeShellArg( $wgJpegTran ) .
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" -rotate " . wfEscapeShellArg( $rotation ) .
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" -outfile " . wfEscapeShellArg( $params['dstPath'] ) .
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" " . wfEscapeShellArg( $params['srcPath'] );
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wfDebug( __METHOD__ . ": running jpgtran: $cmd\n" );
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wfProfileIn( 'jpegtran' );
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$retval = 0;
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$err = wfShellExecWithStderr( $cmd, $retval, $env );
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wfProfileOut( 'jpegtran' );
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if ( $retval !== 0 ) {
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$this->logErrorForExternalProcess( $retval, $err, $cmd );
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return new MediaTransformError( 'thumbnail_error', 0, 0, $err );
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}
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return false;
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} else {
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return parent::rotate( $file, $params );
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}
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}
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}
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