4be770a196
Move it to the StringUtils class, and make it throw a dedicated exception. Update code in media/ to use the new method. Those seemed to be the only usages across all known MW code [1], so hard-deprecate the method as well. [1] - https://codesearch.wmcloud.org/search/?q=wfUnpack&files=&excludeFiles=&repos= Change-Id: I82ce96b6373443cf57a48b98595ca05290f37349
85 lines
2.1 KiB
PHP
85 lines
2.1 KiB
PHP
<?php
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/**
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* Handler for Microsoft's bitmap format.
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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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use MediaWiki\Libs\UnpackFailedException;
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/**
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* Handler for Microsoft's bitmap format; getimagesize() doesn't
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* support these files
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*
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* @ingroup Media
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*/
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class BmpHandler extends BitmapHandler {
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/**
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* @param File $file
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* @return bool
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*/
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public function mustRender( $file ) {
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return true;
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}
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/**
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* Render files as PNG
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*
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* @param string $ext
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* @param string $mime
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* @param array|null $params
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* @return array
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*/
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public function getThumbType( $ext, $mime, $params = null ) {
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return [ 'png', 'image/png' ];
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}
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/**
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* Get width and height from the bmp header.
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*
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* @param MediaHandlerState $state
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* @param string $filename
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* @return array
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*/
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public function getSizeAndMetadata( $state, $filename ) {
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$f = fopen( $filename, 'rb' );
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if ( !$f ) {
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return [];
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}
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$header = fread( $f, 54 );
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fclose( $f );
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// Extract binary form of width and height from the header
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$w = substr( $header, 18, 4 );
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$h = substr( $header, 22, 4 );
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// Convert the unsigned long 32 bits (little endian):
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try {
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$w = StringUtils::unpack( 'V', $w, 4 );
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$h = StringUtils::unpack( 'V', $h, 4 );
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} catch ( UnpackFailedException $e ) {
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return [];
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}
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return [
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'width' => $w[1],
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'height' => $h[1]
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];
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}
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}
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