MediaWiki  master
MWFileProps.php
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1 <?php
28 class MWFileProps {
30  private $magic;
31 
35  public function __construct( MimeAnalyzer $magic ) {
36  $this->magic = $magic;
37  }
38 
63  public function getPropsFromPath( $path, $ext ) {
64  $fsFile = new FSFile( $path );
65 
66  $info = $this->newPlaceholderProps();
67  $info['fileExists'] = $fsFile->exists();
68  if ( $info['fileExists'] ) {
69  $info['size'] = $fsFile->getSize(); // bytes
70  $info['sha1'] = $fsFile->getSha1Base36();
71 
72  # MIME type according to file contents
73  $info['file-mime'] = $this->magic->guessMimeType( $path, false );
74  # Logical MIME type
76  $info['mime'] = $this->magic->improveTypeFromExtension( $info['file-mime'], $ext );
77 
78  list( $info['major_mime'], $info['minor_mime'] ) = File::splitMime( $info['mime'] );
79  $info['media_type'] = $this->magic->getMediaType( $path, $info['mime'] );
80 
81  # Height, width and metadata
82  $handler = MediaHandler::getHandler( $info['mime'] );
83  if ( $handler ) {
84  $info['metadata'] = $handler->getMetadata( $fsFile, $path );
86  $gis = $handler->getImageSize( $fsFile, $path, $info['metadata'] );
87  if ( is_array( $gis ) ) {
88  $info = $this->extractImageSizeInfo( $gis ) + $info;
89  }
90  }
91  }
92 
93  return $info;
94  }
95 
102  private function extractImageSizeInfo( array $gis ) {
103  $info = [];
104  # NOTE: $gis[2] contains a code for the image type. This is no longer used.
105  $info['width'] = $gis[0];
106  $info['height'] = $gis[1];
107  if ( isset( $gis['bits'] ) ) {
108  $info['bits'] = $gis['bits'];
109  } else {
110  $info['bits'] = 0;
111  }
112 
113  return $info;
114  }
115 
136  public function newPlaceholderProps() {
137  return FSFile::placeholderProps() + [
138  'metadata' => '',
139  'width' => 0,
140  'height' => 0,
141  'bits' => 0,
142  'media_type' => MEDIATYPE_UNKNOWN
143  ];
144  }
145 }
deferred txt A few of the database updates required by various functions here can be deferred until after the result page is displayed to the user For updating the view updating the linked to tables after a etc PHP does not yet have any way to tell the server to actually return and disconnect while still running these but it might have such a feature in the future We handle these by creating a deferred update object and putting those objects on a global list
Definition: deferred.txt:11
the array() calling protocol came about after MediaWiki 1.4rc1.
static splitMime($mime)
Split an internet media type into its two components; if not a two-part name, set the minor type to '...
Definition: File.php:273
getPropsFromPath($path, $ext)
Get an associative array containing information about a file with the given storage path...
Definition: MWFileProps.php:63
const MEDIATYPE_UNKNOWN
Definition: defines.php:26
static extensionFromPath($path, $case= 'lowercase')
Get the final extension from a storage or FS path.
null means default in associative array with keys and values unescaped Should be merged with default with a value of false meaning to suppress the attribute in associative array with keys and values unescaped noclasses just before the function returns a value If you return true
Definition: hooks.txt:2019
__construct(MimeAnalyzer $magic)
Definition: MWFileProps.php:35
MimeMagic $magic
Definition: MWFileProps.php:30
static placeholderProps()
Placeholder file properties to use for files that don't exist.
Definition: FSFile.php:143
extractImageSizeInfo(array $gis)
Exract image size information.
newPlaceholderProps()
Empty place holder props for non-existing files.
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
Class representing a non-directory file on the file system.
Definition: FSFile.php:29
static getHandler($type)
Get a MediaHandler for a given MIME type from the instance cache.
MimeMagic helper wrapper.
Definition: MWFileProps.php:28
this hook is for auditing only or null if authentication failed before getting that far or null if we can t even determine that probably a stub it is not rendered in wiki pages or galleries in category pages allow injecting custom HTML after the section Any uses of the hook need to handle escaping see BaseTemplate::getToolbox and BaseTemplate::makeListItem for details on the format of individual items inside of this array or by returning and letting standard HTTP rendering take place modifiable or by returning false and taking over the output modifiable modifiable after all normalizations have been except for the $wgMaxImageArea check set to true or false to override the $wgMaxImageArea check result gives extension the possibility to transform it themselves $handler
Definition: hooks.txt:790
$ext
Definition: router.php:55