MediaWiki  master
SvgHandler.php
Go to the documentation of this file.
1 <?php
26 use Wikimedia\ScopedCallback;
27 
33 class SvgHandler extends ImageHandler {
35 
40  private static $metaConversion = [
41  'originalwidth' => 'ImageWidth',
42  'originalheight' => 'ImageLength',
43  'description' => 'ImageDescription',
44  'title' => 'ObjectName',
45  ];
46 
47  public function isEnabled() {
49  if ( !isset( $wgSVGConverters[$wgSVGConverter] ) ) {
50  wfDebug( "\$wgSVGConverter is invalid, disabling SVG rendering.\n" );
51 
52  return false;
53  } else {
54  return true;
55  }
56  }
57 
58  public function mustRender( $file ) {
59  return true;
60  }
61 
62  function isVectorized( $file ) {
63  return true;
64  }
65 
70  function isAnimatedImage( $file ) {
71  # @todo Detect animated SVGs
72  $metadata = $file->getMetadata();
73  if ( $metadata ) {
74  $metadata = $this->unpackMetadata( $metadata );
75  if ( isset( $metadata['animated'] ) ) {
76  return $metadata['animated'];
77  }
78  }
79 
80  return false;
81  }
82 
95  public function getAvailableLanguages( File $file ) {
96  $metadata = $file->getMetadata();
97  $langList = [];
98  if ( $metadata ) {
99  $metadata = $this->unpackMetadata( $metadata );
100  if ( isset( $metadata['translations'] ) ) {
101  foreach ( $metadata['translations'] as $lang => $langType ) {
102  if ( $langType === SVGReader::LANG_FULL_MATCH ) {
103  $langList[] = strtolower( $lang );
104  }
105  }
106  }
107  }
108  return array_unique( $langList );
109  }
110 
126  public function getMatchedLanguage( $userPreferredLanguage, array $svgLanguages ) {
127  foreach ( $svgLanguages as $svgLang ) {
128  if ( strcasecmp( $svgLang, $userPreferredLanguage ) === 0 ) {
129  return $svgLang;
130  }
131  $trimmedSvgLang = $svgLang;
132  while ( strpos( $trimmedSvgLang, '-' ) !== false ) {
133  $trimmedSvgLang = substr( $trimmedSvgLang, 0, strrpos( $trimmedSvgLang, '-' ) );
134  if ( strcasecmp( $trimmedSvgLang, $userPreferredLanguage ) === 0 ) {
135  return $svgLang;
136  }
137  }
138  }
139  return null;
140  }
141 
148  protected function getLanguageFromParams( array $params ) {
149  return $params['lang'] ?? $params['targetlang'] ?? 'en';
150  }
151 
158  public function getDefaultRenderLanguage( File $file ) {
159  return 'en';
160  }
161 
168  return false;
169  }
170 
176  public function normaliseParams( $image, &$params ) {
177  if ( parent::normaliseParams( $image, $params ) ) {
178  $params = $this->normaliseParamsInternal( $image, $params );
179  return true;
180  }
181 
182  return false;
183  }
184 
194  protected function normaliseParamsInternal( $image, $params ) {
195  global $wgSVGMaxSize;
196 
197  # Don't make an image bigger than wgMaxSVGSize on the smaller side
198  if ( $params['physicalWidth'] <= $params['physicalHeight'] ) {
199  if ( $params['physicalWidth'] > $wgSVGMaxSize ) {
200  $srcWidth = $image->getWidth( $params['page'] );
201  $srcHeight = $image->getHeight( $params['page'] );
202  $params['physicalWidth'] = $wgSVGMaxSize;
203  $params['physicalHeight'] = File::scaleHeight( $srcWidth, $srcHeight, $wgSVGMaxSize );
204  }
205  } elseif ( $params['physicalHeight'] > $wgSVGMaxSize ) {
206  $srcWidth = $image->getWidth( $params['page'] );
207  $srcHeight = $image->getHeight( $params['page'] );
208  $params['physicalWidth'] = File::scaleHeight( $srcHeight, $srcWidth, $wgSVGMaxSize );
209  $params['physicalHeight'] = $wgSVGMaxSize;
210  }
211  // To prevent the proliferation of thumbnails in languages not present in SVGs, unless
212  // explicitly forced by user.
213  if ( isset( $params['targetlang'] ) && !$image->getMatchedLanguage( $params['targetlang'] ) ) {
214  unset( $params['targetlang'] );
215  }
216 
217  return $params;
218  }
219 
228  function doTransform( $image, $dstPath, $dstUrl, $params, $flags = 0 ) {
229  if ( !$this->normaliseParams( $image, $params ) ) {
230  return new TransformParameterError( $params );
231  }
232  $clientWidth = $params['width'];
233  $clientHeight = $params['height'];
234  $physicalWidth = $params['physicalWidth'];
235  $physicalHeight = $params['physicalHeight'];
236  $lang = $this->getLanguageFromParams( $params );
237 
238  if ( $flags & self::TRANSFORM_LATER ) {
239  return new ThumbnailImage( $image, $dstUrl, $dstPath, $params );
240  }
241 
242  $metadata = $this->unpackMetadata( $image->getMetadata() );
243  if ( isset( $metadata['error'] ) ) { // sanity check
244  $err = wfMessage( 'svg-long-error', $metadata['error']['message'] );
245 
246  return new MediaTransformError( 'thumbnail_error', $clientWidth, $clientHeight, $err );
247  }
248 
249  if ( !wfMkdirParents( dirname( $dstPath ), null, __METHOD__ ) ) {
250  return new MediaTransformError( 'thumbnail_error', $clientWidth, $clientHeight,
251  wfMessage( 'thumbnail_dest_directory' ) );
252  }
253 
254  $srcPath = $image->getLocalRefPath();
255  if ( $srcPath === false ) { // Failed to get local copy
256  wfDebugLog( 'thumbnail',
257  sprintf( 'Thumbnail failed on %s: could not get local copy of "%s"',
258  wfHostname(), $image->getName() ) );
259 
260  return new MediaTransformError( 'thumbnail_error',
261  $params['width'], $params['height'],
262  wfMessage( 'filemissing' )
263  );
264  }
265 
266  // Make a temp dir with a symlink to the local copy in it.
267  // This plays well with rsvg-convert policy for external entities.
268  // https://git.gnome.org/browse/librsvg/commit/?id=f01aded72c38f0e18bc7ff67dee800e380251c8e
269  $tmpDir = wfTempDir() . '/svg_' . wfRandomString( 24 );
270  $lnPath = "$tmpDir/" . basename( $srcPath );
271  $ok = mkdir( $tmpDir, 0771 );
272  if ( !$ok ) {
273  wfDebugLog( 'thumbnail',
274  sprintf( 'Thumbnail failed on %s: could not create temporary directory %s',
275  wfHostname(), $tmpDir ) );
276  return new MediaTransformError( 'thumbnail_error',
277  $params['width'], $params['height'],
278  wfMessage( 'thumbnail-temp-create' )->text()
279  );
280  }
281  $ok = symlink( $srcPath, $lnPath );
283  $cleaner = new ScopedCallback( function () use ( $tmpDir, $lnPath ) {
284  Wikimedia\suppressWarnings();
285  unlink( $lnPath );
286  rmdir( $tmpDir );
287  Wikimedia\restoreWarnings();
288  } );
289  if ( !$ok ) {
290  wfDebugLog( 'thumbnail',
291  sprintf( 'Thumbnail failed on %s: could not link %s to %s',
292  wfHostname(), $lnPath, $srcPath ) );
293  return new MediaTransformError( 'thumbnail_error',
294  $params['width'], $params['height'],
295  wfMessage( 'thumbnail-temp-create' )
296  );
297  }
298 
299  $status = $this->rasterize( $lnPath, $dstPath, $physicalWidth, $physicalHeight, $lang );
300  if ( $status === true ) {
301  return new ThumbnailImage( $image, $dstUrl, $dstPath, $params );
302  } else {
303  return $status; // MediaTransformError
304  }
305  }
306 
318  public function rasterize( $srcPath, $dstPath, $width, $height, $lang = false ) {
320  $err = false;
321  $retval = '';
322  if ( isset( $wgSVGConverters[$wgSVGConverter] ) ) {
323  if ( is_array( $wgSVGConverters[$wgSVGConverter] ) ) {
324  // This is a PHP callable
325  $func = $wgSVGConverters[$wgSVGConverter][0];
326  if ( !is_callable( $func ) ) {
327  throw new MWException( "$func is not callable" );
328  }
329  $err = $func( $srcPath,
330  $dstPath,
331  $width,
332  $height,
333  $lang,
334  ...array_slice( $wgSVGConverters[$wgSVGConverter], 1 )
335  );
336  $retval = (bool)$err;
337  } else {
338  // External command
339  $cmd = str_replace(
340  [ '$path/', '$width', '$height', '$input', '$output' ],
341  [ $wgSVGConverterPath ? Shell::escape( "$wgSVGConverterPath/" ) : "",
342  intval( $width ),
343  intval( $height ),
344  Shell::escape( $srcPath ),
345  Shell::escape( $dstPath ) ],
347  );
348 
349  $env = [];
350  if ( $lang !== false ) {
351  $env['LANG'] = $lang;
352  }
353 
354  wfDebug( __METHOD__ . ": $cmd\n" );
355  $err = wfShellExecWithStderr( $cmd, $retval, $env );
356  }
357  }
358  $removed = $this->removeBadFile( $dstPath, $retval );
359  if ( $retval != 0 || $removed ) {
360  $this->logErrorForExternalProcess( $retval, $err, $cmd );
361  return new MediaTransformError( 'thumbnail_error', $width, $height, $err );
362  }
363 
364  return true;
365  }
366 
367  public static function rasterizeImagickExt( $srcPath, $dstPath, $width, $height ) {
368  $im = new Imagick( $srcPath );
369  $im->setImageFormat( 'png' );
370  $im->setBackgroundColor( 'transparent' );
371  $im->setImageDepth( 8 );
372 
373  if ( !$im->thumbnailImage( intval( $width ), intval( $height ), /* fit */ false ) ) {
374  return 'Could not resize image';
375  }
376  if ( !$im->writeImage( $dstPath ) ) {
377  return "Could not write to $dstPath";
378  }
379  }
380 
387  function getImageSize( $file, $path, $metadata = false ) {
388  if ( $metadata === false && $file instanceof File ) {
389  $metadata = $file->getMetadata();
390  }
391  $metadata = $this->unpackMetadata( $metadata );
392 
393  if ( isset( $metadata['width'] ) && isset( $metadata['height'] ) ) {
394  return [ $metadata['width'], $metadata['height'], 'SVG',
395  "width=\"{$metadata['width']}\" height=\"{$metadata['height']}\"" ];
396  } else { // error
397  return [ 0, 0, 'SVG', "width=\"0\" height=\"0\"" ];
398  }
399  }
400 
401  public function getThumbType( $ext, $mime, $params = null ) {
402  return [ 'png', 'image/png' ];
403  }
404 
414  public function getLongDesc( $file ) {
415  global $wgLang;
416 
417  $metadata = $this->unpackMetadata( $file->getMetadata() );
418  if ( isset( $metadata['error'] ) ) {
419  return wfMessage( 'svg-long-error', $metadata['error']['message'] )->text();
420  }
421 
422  $size = $wgLang->formatSize( $file->getSize() );
423 
424  if ( $this->isAnimatedImage( $file ) ) {
425  $msg = wfMessage( 'svg-long-desc-animated' );
426  } else {
427  $msg = wfMessage( 'svg-long-desc' );
428  }
429 
430  $msg->numParams( $file->getWidth(), $file->getHeight() )->params( $size );
431 
432  return $msg->parse();
433  }
434 
440  public function getMetadata( $file, $filename ) {
441  $metadata = [ 'version' => self::SVG_METADATA_VERSION ];
442 
443  try {
444  $svgReader = new SVGReader( $filename );
445  $metadata += $svgReader->getMetadata();
446  } catch ( Exception $e ) { // @todo SVG specific exceptions
447  // File not found, broken, etc.
448  $metadata['error'] = [
449  'message' => $e->getMessage(),
450  'code' => $e->getCode()
451  ];
452  wfDebug( __METHOD__ . ': ' . $e->getMessage() . "\n" );
453  }
454 
455  return serialize( $metadata );
456  }
457 
458  function unpackMetadata( $metadata ) {
459  Wikimedia\suppressWarnings();
460  $unser = unserialize( $metadata );
461  Wikimedia\restoreWarnings();
462  if ( isset( $unser['version'] ) && $unser['version'] == self::SVG_METADATA_VERSION ) {
463  return $unser;
464  } else {
465  return false;
466  }
467  }
468 
469  function getMetadataType( $image ) {
470  return 'parsed-svg';
471  }
472 
473  public function isMetadataValid( $image, $metadata ) {
474  $meta = $this->unpackMetadata( $metadata );
475  if ( $meta === false ) {
476  return self::METADATA_BAD;
477  }
478  if ( !isset( $meta['originalWidth'] ) ) {
479  // Old but compatible
481  }
482 
483  return self::METADATA_GOOD;
484  }
485 
486  protected function visibleMetadataFields() {
487  $fields = [ 'objectname', 'imagedescription' ];
488 
489  return $fields;
490  }
491 
497  public function formatMetadata( $file, $context = false ) {
498  $result = [
499  'visible' => [],
500  'collapsed' => []
501  ];
502  $metadata = $file->getMetadata();
503  if ( !$metadata ) {
504  return false;
505  }
506  $metadata = $this->unpackMetadata( $metadata );
507  if ( !$metadata || isset( $metadata['error'] ) ) {
508  return false;
509  }
510 
511  /* @todo Add a formatter
512  $format = new FormatSVG( $metadata );
513  $formatted = $format->getFormattedData();
514  */
515 
516  // Sort fields into visible and collapsed
517  $visibleFields = $this->visibleMetadataFields();
518 
519  $showMeta = false;
520  foreach ( $metadata as $name => $value ) {
521  $tag = strtolower( $name );
522  if ( isset( self::$metaConversion[$tag] ) ) {
523  $tag = strtolower( self::$metaConversion[$tag] );
524  } else {
525  // Do not output other metadata not in list
526  continue;
527  }
528  $showMeta = true;
529  self::addMeta( $result,
530  in_array( $tag, $visibleFields ) ? 'visible' : 'collapsed',
531  'exif',
532  $tag,
533  $value
534  );
535  }
536 
537  return $showMeta ? $result : false;
538  }
539 
545  public function validateParam( $name, $value ) {
546  if ( in_array( $name, [ 'width', 'height' ] ) ) {
547  // Reject negative heights, widths
548  return ( $value > 0 );
549  } elseif ( $name == 'lang' ) {
550  // Validate $code
551  if ( $value === ''
552  || !MediaWikiServices::getInstance()->getLanguageNameUtils()
553  ->isValidCode( $value )
554  ) {
555  return false;
556  }
557 
558  return true;
559  }
560 
561  // Only lang, width and height are acceptable keys
562  return false;
563  }
564 
569  public function makeParamString( $params ) {
570  $lang = '';
571  $code = $this->getLanguageFromParams( $params );
572  if ( $code !== 'en' ) {
573  $lang = 'lang' . strtolower( $code ) . '-';
574  }
575  if ( !isset( $params['width'] ) ) {
576  return false;
577  }
578 
579  return "$lang{$params['width']}px";
580  }
581 
582  public function parseParamString( $str ) {
583  $m = false;
584  if ( preg_match( '/^lang([a-z]+(?:-[a-z]+)*)-(\d+)px$/i', $str, $m ) ) {
585  return [ 'width' => array_pop( $m ), 'lang' => $m[1] ];
586  } elseif ( preg_match( '/^(\d+)px$/', $str, $m ) ) {
587  return [ 'width' => $m[1], 'lang' => 'en' ];
588  } else {
589  return false;
590  }
591  }
592 
593  public function getParamMap() {
594  return [ 'img_lang' => 'lang', 'img_width' => 'width' ];
595  }
596 
601  protected function getScriptParams( $params ) {
602  $scriptParams = [ 'width' => $params['width'] ];
603  if ( isset( $params['lang'] ) ) {
604  $scriptParams['lang'] = $params['lang'];
605  }
606 
607  return $scriptParams;
608  }
609 
610  public function getCommonMetaArray( File $file ) {
611  $metadata = $file->getMetadata();
612  if ( !$metadata ) {
613  return [];
614  }
615  $metadata = $this->unpackMetadata( $metadata );
616  if ( !$metadata || isset( $metadata['error'] ) ) {
617  return [];
618  }
619  $stdMetadata = [];
620  foreach ( $metadata as $name => $value ) {
621  $tag = strtolower( $name );
622  if ( $tag === 'originalwidth' || $tag === 'originalheight' ) {
623  // Skip these. In the exif metadata stuff, it is assumed these
624  // are measured in px, which is not the case here.
625  continue;
626  }
627  if ( isset( self::$metaConversion[$tag] ) ) {
628  $tag = self::$metaConversion[$tag];
629  $stdMetadata[$tag] = $value;
630  }
631  }
632 
633  return $stdMetadata;
634  }
635 }
MediaHandler\removeBadFile
removeBadFile( $dstPath, $retval=0)
Check for zero-sized thumbnails.
Definition: MediaHandler.php:680
SVGReader
Definition: SVGReader.php:31
SvgHandler\validateParam
validateParam( $name, $value)
Definition: SvgHandler.php:545
SvgHandler\rasterizeImagickExt
static rasterizeImagickExt( $srcPath, $dstPath, $width, $height)
Definition: SvgHandler.php:367
MediaWiki\Shell\Shell
Executes shell commands.
Definition: Shell.php:44
MediaTransformError
Basic media transform error class.
Definition: MediaTransformError.php:29
ThumbnailImage
Media transform output for images.
Definition: ThumbnailImage.php:29
SvgHandler\$metaConversion
static array $metaConversion
A list of metadata tags that can be converted to the commonly used exif tags.
Definition: SvgHandler.php:40
wfMkdirParents
wfMkdirParents( $dir, $mode=null, $caller=null)
Make directory, and make all parent directories if they don't exist.
Definition: GlobalFunctions.php:1970
SvgHandler\parseParamString
parseParamString( $str)
Parse a param string made with makeParamString back into an array.
Definition: SvgHandler.php:582
MediaWiki\MediaWikiServices
MediaWikiServices is the service locator for the application scope of MediaWiki.
Definition: MediaWikiServices.php:134
$lang
if(!isset( $args[0])) $lang
Definition: testCompression.php:35
SvgHandler\formatMetadata
formatMetadata( $file, $context=false)
Definition: SvgHandler.php:497
SvgHandler\getMetadataType
getMetadataType( $image)
Get a string describing the type of metadata, for display purposes.
Definition: SvgHandler.php:469
SvgHandler\getMatchedLanguage
getMatchedLanguage( $userPreferredLanguage, array $svgLanguages)
SVG's systemLanguage matching rules state: 'The systemLanguage attribute ...
Definition: SvgHandler.php:126
$wgSVGMaxSize
$wgSVGMaxSize
Don't scale a SVG larger than this.
Definition: DefaultSettings.php:1245
SvgHandler\isAnimatedImage
isAnimatedImage( $file)
Definition: SvgHandler.php:70
SvgHandler\mustRender
mustRender( $file)
True if handled types cannot be displayed directly in a browser but can be rendered.
Definition: SvgHandler.php:58
$file
if(PHP_SAPI !='cli-server') if(!isset( $_SERVER['SCRIPT_FILENAME'])) $file
Item class for a filearchive table row.
Definition: router.php:42
wfHostname
wfHostname()
Fetch server name for use in error reporting etc.
Definition: GlobalFunctions.php:1327
wfMessage
wfMessage( $key,... $params)
This is the function for getting translated interface messages.
Definition: GlobalFunctions.php:1265
SvgHandler\getThumbType
getThumbType( $ext, $mime, $params=null)
Get the thumbnail extension and MIME type for a given source MIME type.
Definition: SvgHandler.php:401
serialize
serialize()
Definition: ApiMessageTrait.php:138
SvgHandler\getScriptParams
getScriptParams( $params)
Definition: SvgHandler.php:601
wfDebugLog
wfDebugLog( $logGroup, $text, $dest='all', array $context=[])
Send a line to a supplementary debug log file, if configured, or main debug log if not.
Definition: GlobalFunctions.php:1007
SvgHandler\getLanguageFromParams
getLanguageFromParams(array $params)
Determines render language from image parameters.
Definition: SvgHandler.php:148
SvgHandler\getMetadata
getMetadata( $file, $filename)
Definition: SvgHandler.php:440
SvgHandler\normaliseParamsInternal
normaliseParamsInternal( $image, $params)
Code taken out of normaliseParams() for testability.
Definition: SvgHandler.php:194
SvgHandler\rasterize
rasterize( $srcPath, $dstPath, $width, $height, $lang=false)
Transform an SVG file to PNG This function can be called outside of thumbnail contexts.
Definition: SvgHandler.php:318
SvgHandler\getLongDesc
getLongDesc( $file)
Subtitle for the image.
Definition: SvgHandler.php:414
MediaHandler\METADATA_COMPATIBLE
const METADATA_COMPATIBLE
Definition: MediaHandler.php:39
File
Implements some public methods and some protected utility functions which are required by multiple ch...
Definition: File.php:61
$wgSVGConverterPath
$wgSVGConverterPath
If not in the executable PATH, specify the SVG converter path.
Definition: DefaultSettings.php:1240
MWException
MediaWiki exception.
Definition: MWException.php:26
SvgHandler\normaliseParams
normaliseParams( $image, &$params)
Definition: SvgHandler.php:176
SvgHandler\isEnabled
isEnabled()
False if the handler is disabled for all files.
Definition: SvgHandler.php:47
$wgLang
$wgLang
Definition: Setup.php:852
ImageHandler
Media handler abstract base class for images.
Definition: ImageHandler.php:29
MediaHandler\addMeta
static addMeta(&$array, $visibility, $type, $id, $value, $param=false)
This is used to generate an array element for each metadata value That array is then used to generate...
Definition: MediaHandler.php:554
SvgHandler
Handler for SVG images.
Definition: SvgHandler.php:33
SVGReader\LANG_FULL_MATCH
const LANG_FULL_MATCH
Definition: SVGReader.php:36
wfDebug
wfDebug( $text, $dest='all', array $context=[])
Sends a line to the debug log if enabled or, optionally, to a comment in output.
Definition: GlobalFunctions.php:913
SvgHandler\doTransform
doTransform( $image, $dstPath, $dstUrl, $params, $flags=0)
Definition: SvgHandler.php:228
TransformParameterError
Shortcut class for parameter validation errors.
Definition: TransformParameterError.php:29
SvgHandler\canAnimateThumbnail
canAnimateThumbnail( $file)
We do not support making animated svg thumbnails.
Definition: SvgHandler.php:167
SvgHandler\getAvailableLanguages
getAvailableLanguages(File $file)
Which languages (systemLanguage attribute) is supported.
Definition: SvgHandler.php:95
SvgHandler\getImageSize
getImageSize( $file, $path, $metadata=false)
Definition: SvgHandler.php:387
$context
$context
Definition: load.php:43
File\scaleHeight
static scaleHeight( $srcWidth, $srcHeight, $dstWidth)
Calculate the height of a thumbnail using the source and destination width.
Definition: File.php:2054
unserialize
unserialize( $serialized)
Definition: ApiMessageTrait.php:146
SvgHandler\getCommonMetaArray
getCommonMetaArray(File $file)
Get an array of standard (FormatMetadata type) metadata values.
Definition: SvgHandler.php:610
wfTempDir
wfTempDir()
Tries to get the system directory for temporary files.
Definition: GlobalFunctions.php:1951
SvgHandler\getDefaultRenderLanguage
getDefaultRenderLanguage(File $file)
What language to render file in if none selected.
Definition: SvgHandler.php:158
MediaHandler\logErrorForExternalProcess
logErrorForExternalProcess( $retval, $err, $cmd)
Log an error that occurred in an external process.
Definition: MediaHandler.php:758
$path
$path
Definition: NoLocalSettings.php:25
SvgHandler\visibleMetadataFields
visibleMetadataFields()
Get a list of metadata items which should be displayed when the metadata table is collapsed.
Definition: SvgHandler.php:486
MediaHandler\METADATA_BAD
const METADATA_BAD
Definition: MediaHandler.php:38
$wgSVGConverters
$wgSVGConverters
Scalable Vector Graphics (SVG) may be uploaded as images.
Definition: DefaultSettings.php:1220
$ext
if(!is_readable( $file)) $ext
Definition: router.php:48
SvgHandler\SVG_METADATA_VERSION
const SVG_METADATA_VERSION
Definition: SvgHandler.php:34
SvgHandler\unpackMetadata
unpackMetadata( $metadata)
Definition: SvgHandler.php:458
SvgHandler\makeParamString
makeParamString( $params)
Definition: SvgHandler.php:569
SvgHandler\getParamMap
getParamMap()
Get an associative array mapping magic word IDs to parameter names.
Definition: SvgHandler.php:593
$wgSVGConverter
$wgSVGConverter
Pick a converter defined in $wgSVGConverters.
Definition: DefaultSettings.php:1235
SvgHandler\isVectorized
isVectorized( $file)
The material is vectorized and thus scaling is lossless.
Definition: SvgHandler.php:62
MediaHandler\METADATA_GOOD
const METADATA_GOOD
Definition: MediaHandler.php:37
SvgHandler\isMetadataValid
isMetadataValid( $image, $metadata)
Check if the metadata string is valid for this handler.
Definition: SvgHandler.php:473
wfShellExecWithStderr
wfShellExecWithStderr( $cmd, &$retval=null, $environ=[], $limits=[])
Execute a shell command, returning both stdout and stderr.
Definition: GlobalFunctions.php:2184
wfRandomString
wfRandomString( $length=32)
Get a random string containing a number of pseudo-random hex characters.
Definition: GlobalFunctions.php:274