<?php
-# Class to represent an image
-# Provides methods to retrieve paths (physical, logical, URL),
-# to generate thumbnails or for uploading.
+/**
+ * @package MediaWiki
+ */
+/**
+ * Class to represent an image
+ *
+ * Provides methods to retrieve paths (physical, logical, URL),
+ * to generate thumbnails or for uploading.
+ * @package MediaWiki
+ */
class Image
{
- /* private */
+ /**#@+
+ * @access private
+ */
var $name, # name of the image
$imagePath, # Path of the image
$url, # Image URL
$title, # Title object for this image. Initialized when needed.
$fileExists, # does the image file exist on disk?
+ $fromSharedDirectory, # load this image from $wgSharedUploadDirectory
+ $historyLine, # Number of line to return by nextHistoryLine()
+ $historyRes, # result of the query for the image's history
$width, # \
- $height, # --- returned by getimagesize, see http://de3.php.net/manual/en/function.getimagesize.php
+ $height, # |
+ $bits, # --- returned by getimagesize, see http://de3.php.net/manual/en/function.getimagesize.php
$type, # |
$attr; # /
+ /**#@-*/
+
+
+ /**
+ * Create an Image object from an image name
+ *
+ * @param string $name name of the image, used to create a title object using Title::makeTitleSafe
+ * @param bool $recache if true, ignores anything in memcached and sets the updated metadata
+ * @access public
+ */
+ function Image( $name, $recache = false ) {
+
+ global $wgUseSharedUploads, $wgUseLatin1, $wgSharedLatin1, $wgLang, $wgMemc, $wgDBname;
- function Image( $name )
- {
$this->name = $name;
- $this->title = Title::makeTitle( Namespace::getImage(), $this->name );
- $this->imagePath = wfImagePath( $name );
- $this->url = $this->wfImageUrl( $name );
+ $this->title = Title::makeTitleSafe( NS_IMAGE, $this->name );
+ $this->fromSharedDirectory = false;
+ $this->imagePath = $this->getFullPath();
+
+ $n = strrpos( $name, '.' );
+ $this->extension = strtolower( $n ? substr( $name, $n + 1 ) : '' );
+ $gis = false;
+ $hashedName = md5($this->name);
+ $cacheKey = "$wgDBname:Image:".$hashedName;
+ $foundCached = false;
- if ( $this->fileExists = file_exists( $this->imagePath ) ) // Sic!, "=" is intended
- {
- list($this->width, $this->height, $this->type, $this->attr) = getimagesize( $this->imagePath );
+ if ( !$recache ) {
+ $cachedValues = $wgMemc->get( $cacheKey );
+
+ if (!empty($cachedValues) && is_array($cachedValues)) {
+ if ($wgUseSharedUploads && $cachedValues['fromShared']) {
+ # if this is shared file, we need to check if image
+ # in shared repository has not changed
+ $commonsCachedValues = $wgMemc->get( "$wgSharedUploadDBname:Image:".$hashedName );
+ if (!empty($commonsCachedValues) && is_array($commonsCachedValues)) {
+ $this->name = $commonsCachedValues['name'];
+ $this->imagePath = $commonsCachedValues['imagePath'];
+ $this->fileExists = $commonsCachedValues['fileExists'];
+ $this->fromSharedDirectory = true;
+ $gis = $commonsCachedValues['gis'];
+ $foundCached = true;
+ }
+ }
+ else {
+ $this->name = $cachedValues['name'];
+ $this->imagePath = $cachedValues['imagePath'];
+ $this->fileExists = $cachedValues['fileExists'];
+ $this->fromSharedDirectory = false;
+ $gis = $cachedValues['gis'];
+ $foundCached = true;
+ }
+ }
}
+
+ if (!$foundCached) {
+ $this->fileExists = file_exists( $this->imagePath);
+
+ # If the file is not found, and a shared upload directory
+ # like the Wikimedia Commons is used, look for it there.
+ if (!$this->fileExists && $wgUseSharedUploads) {
+
+ # In case we're on a wgCapitalLinks=false wiki, we
+ # capitalize the first letter of the filename before
+ # looking it up in the shared repository.
+ $this->name= $wgLang->ucfirst($name);
+
+ # Encode the filename if we're on a Latin1 wiki and the
+ # shared repository is UTF-8
+ if($wgUseLatin1 && !$wgSharedLatin1) {
+ $this->name = utf8_encode($name);
+ }
+
+ $this->imagePath = $this->getFullPath(true);
+ $this->fileExists = file_exists( $this->imagePath);
+ $this->fromSharedDirectory = true;
+ $name=$this->name;
+ }
+
+ if ( $this->fileExists ) {
+ # Don't try to get the size of sound and video files, that's bad for performance
+ if ( !Image::isKnownImageExtension( $this->extension ) ) {
+ $gis = false;
+ } elseif( $this->extension == 'svg' ) {
+ wfSuppressWarnings();
+ $gis = getSVGsize( $this->imagePath );
+ wfRestoreWarnings();
+ } else {
+ wfSuppressWarnings();
+ $gis = getimagesize( $this->imagePath );
+ wfRestoreWarnings();
+ }
+ }
+
+ $cachedValues = array('name' => $this->name,
+ 'imagePath' => $this->imagePath,
+ 'fileExists' => $this->fileExists,
+ 'fromShared' => $this->fromSharedDirectory,
+ 'gis' => $gis);
+
+ $wgMemc->set( $cacheKey, $cachedValues );
+
+ if ($wgUseSharedUploads && $this->fromSharedDirectory) {
+ $cachedValues['fromShared'] = false;
+ $wgMemc->set( "$wgSharedUploadDBname:Image:".$hashedName, $cachedValues );
+ }
+ }
+
+ if( $gis !== false ) {
+ $this->width = $gis[0];
+ $this->height = $gis[1];
+ $this->type = $gis[2];
+ $this->attr = $gis[3];
+ if ( isset( $gis['bits'] ) ) {
+ $this->bits = $gis['bits'];
+ } else {
+ $this->bits = 0;
+ }
+ }
+
+ if($this->fileExists) {
+ $this->url = $this->wfImageUrl( $this->name, $this->fromSharedDirectory );
+ } else {
+ $this->url='';
+ }
+ $this->historyLine = 0;
}
- function newFromTitle( $nt )
- {
+ /**
+ * Remove image metadata from cache if any
+ *
+ * Don't call this, use the $recache parameter of Image::Image() instead
+ *
+ * @param string $name the title of an image
+ * @static
+ */
+ function invalidateMetadataCache( $name ) {
+ global $wgMemc, $wgDBname;
+ $wgMemc->delete("$wgDBname:Image:".md5($name));
+ }
+
+ /**
+ * Factory function
+ *
+ * Create a new image object from a title object.
+ *
+ * @param Title $nt Title object. Must be from namespace "image"
+ * @access public
+ */
+ function newFromTitle( $nt ) {
$img = new Image( $nt->getDBKey() );
$img->title = $nt;
return $img;
}
- function getName()
- {
+ /**
+ * Return the name of this image
+ * @access public
+ */
+ function getName() {
return $this->name;
}
- function getURL()
- {
+ /**
+ * Return the associated title object
+ * @access public
+ */
+ function getTitle() {
+ return $this->title;
+ }
+
+ /**
+ * Return the URL of the image file
+ * @access public
+ */
+ function getURL() {
return $this->url;
}
+
+ function getViewURL() {
+ if( $this->mustRender() ) {
+ return $this->createThumb( $this->getWidth() );
+ } else {
+ return $this->getURL();
+ }
+ }
+ /**
+ * Return the image path of the image in the
+ * local file system as an absolute path
+ * @access public
+ */
function getImagePath()
{
return $this->imagePath;
}
- function getWidth()
- {
+ /**
+ * Return the width of the image
+ *
+ * Returns -1 if the file specified is not a known image type
+ * @access public
+ */
+ function getWidth() {
return $this->width;
}
- function getHeight()
- {
+ /**
+ * Return the height of the image
+ *
+ * Returns -1 if the file specified is not a known image type
+ * @access public
+ */
+ function getHeight() {
return $this->height;
}
- function getType()
- {
+ /**
+ * Return the size of the image file, in bytes
+ * @access public
+ */
+ function getSize() {
+ $st = stat( $this->getImagePath() );
+ if( $st ) {
+ return $st['size'];
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * Return the type of the image
+ *
+ * - 1 GIF
+ * - 2 JPG
+ * - 3 PNG
+ * - 15 WBMP
+ * - 16 XBM
+ */
+ function getType() {
return $this->type;
}
- function getEscapeLocalURL()
- {
+ /**
+ * Return the escapeLocalURL of this image
+ * @access public
+ */
+ function getEscapeLocalURL() {
return $this->title->escapeLocalURL();
}
- function wfImageUrl( $name )
- {
- global $wgUploadPath;
- $hash = md5( $name );
+ /**
+ * Return the escapeFullURL of this image
+ * @access public
+ */
+ function getEscapeFullURL() {
+ return $this->title->escapeFullURL();
+ }
- $url = "{$wgUploadPath}/" . $hash{0} . "/" .
- substr( $hash, 0, 2 ) . "/{$name}";
+ /**
+ * Return the URL of an image, provided its name.
+ *
+ * @param string $name Name of the image, without the leading "Image:"
+ * @param boolean $fromSharedDirectory Should this be in $wgSharedUploadPath?
+ * @access public
+ */
+ function wfImageUrl( $name, $fromSharedDirectory = false ) {
+ global $wgUploadPath,$wgUploadBaseUrl,$wgSharedUploadPath;
+ if($fromSharedDirectory) {
+ $base = '';
+ $path = $wgSharedUploadPath;
+ } else {
+ $base = $wgUploadBaseUrl;
+ $path = $wgUploadPath;
+ }
+ $url = "{$base}{$path}" . wfGetHashPath($name, $fromSharedDirectory) . "{$name}";
return wfUrlencode( $url );
}
-
- function exists()
- {
+ /**
+ * Returns true iff the image file exists on disk.
+ *
+ * @access public
+ */
+ function exists() {
return $this->fileExists;
}
+ /**
+ *
+ * @access private
+ */
+ function thumbUrl( $width, $subdir='thumb') {
+ global $wgUploadPath, $wgUploadBaseUrl,
+ $wgSharedUploadPath,$wgSharedUploadDirectory,
+ $wgUseLatin1,$wgSharedLatin1;
+ $name = $this->thumbName( $width );
+ if($this->fromSharedDirectory) {
+ $base = '';
+ $path = $wgSharedUploadPath;
+ if($wgUseLatin1 && !$wgSharedLatin1) {
+ $name=utf8_encode($name);
+ }
+ } else {
+ $base = $wgUploadBaseUrl;
+ $path = $wgUploadPath;
+ }
+ $url = "{$base}{$path}/{$subdir}" .
+ wfGetHashPath($name, $this->fromSharedDirectory)
+ . "{$name}";
+ return wfUrlencode($url);
+ }
- function createThumb( $width ) {
- global $wgUploadDirectory;
+ /**
+ * Return the file name of a thumbnail of the specified width
+ *
+ * @param integer $width Width of the thumbnail image
+ * @param boolean $shared Does the thumbnail come from the shared repository?
+ * @access private
+ */
+ function thumbName( $width, $shared=false ) {
+ global $wgUseLatin1,$wgSharedLatin1;
+ $thumb = $width."px-".$this->name;
+ if( $this->extension == 'svg' ) {
+ # Rasterize SVG vector images to PNG
+ $thumb .= '.png';
+ }
+ if( $shared && $wgUseLatin1 && !$wgSharedLatin1) {
+ $thumb=utf8_encode($thumb);
+ }
+ return $thumb;
+ }
+
+ /**
+ * Create a thumbnail of the image having the specified width/height.
+ * The thumbnail will not be created if the width is larger than the
+ * image's width. Let the browser do the scaling in this case.
+ * The thumbnail is stored on disk and is only computed if the thumbnail
+ * file does not exist OR if it is older than the image.
+ * Returns the URL.
+ *
+ * Keeps aspect ratio of original image. If both width and height are
+ * specified, the generated image will be no bigger than width x height,
+ * and will also have correct aspect ratio.
+ *
+ * @param integer $width maximum width of the generated thumbnail
+ * @param integer $height maximum height of the image (optional)
+ * @access public
+ */
+ function createThumb( $width, $height=-1 ) {
+ $thumb = $this->getThumbnail( $width, $height );
+ if( is_null( $thumb ) ) return '';
+ return $thumb->getUrl();
+ }
+
+ /**
+ * As createThumb, but returns a ThumbnailImage object. This can
+ * provide access to the actual file, the real size of the thumb,
+ * and can produce a convenient <img> tag for you.
+ *
+ * @param integer $width maximum width of the generated thumbnail
+ * @param integer $height maximum height of the image (optional)
+ * @return ThumbnailImage
+ * @access public
+ */
+ function &getThumbnail( $width, $height=-1 ) {
+ if ( $height == -1 ) {
+ return $this->renderThumb( $width );
+ }
+ if ( $width < $this->width ) {
+ $thumbheight = $this->height * $width / $this->width;
+ $thumbwidth = $width;
+ } else {
+ $thumbheight = $this->height;
+ $thumbwidth = $this->width;
+ }
+ if ( $thumbheight > $height ) {
+ $thumbwidth = $thumbwidth * $height / $thumbheight;
+ $thumbheight = $height;
+ }
+ $thumb = $this->renderThumb( $thumbwidth );
+ if( is_null( $thumb ) ) {
+ $thumb = $this->iconThumb();
+ }
+ return $thumb;
+ }
+
+ /**
+ * @return ThumbnailImage
+ */
+ function iconThumb() {
+ global $wgStylePath, $wgStyleDirectory;
+
+ $try = array( 'fileicon-' . $this->extension . '.png', 'fileicon.png' );
+ foreach( $try as $icon ) {
+ $path = '/common/images/' . $icon;
+ $filepath = $wgStyleDirectory . $path;
+ if( file_exists( $filepath ) ) {
+ return new ThumbnailImage( $filepath, $wgStylePath . $path );
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Create a thumbnail of the image having the specified width.
+ * The thumbnail will not be created if the width is larger than the
+ * image's width. Let the browser do the scaling in this case.
+ * The thumbnail is stored on disk and is only computed if the thumbnail
+ * file does not exist OR if it is older than the image.
+ * Returns an object which can return the pathname, URL, and physical
+ * pixel size of the thumbnail -- or null on failure.
+ *
+ * @return ThumbnailImage
+ * @access private
+ */
+ function /* private */ renderThumb( $width ) {
global $wgImageMagickConvertCommand;
global $wgUseImageMagick;
global $wgUseSquid, $wgInternalServer;
- $thumbName = $width."px-".$this->name;
- $thumbPath = wfImageThumbDir( $thumbName )."/".$thumbName;
- $thumbUrl = wfImageThumbUrl( $thumbName );
+ $width = IntVal( $width );
+
+ $thumbName = $this->thumbName( $width, $this->fromSharedDirectory );
+ $thumbPath = wfImageThumbDir( $thumbName, 'thumb', $this->fromSharedDirectory ).'/'.$thumbName;
+ $thumbUrl = $this->thumbUrl( $width );
+ #wfDebug ( "Render name: $thumbName path: $thumbPath url: $thumbUrl\n");
if ( ! $this->exists() )
{
# If there is no image, there will be no thumbnail
- return "";
+ return null;
}
# Sanity check $width
- $width = IntVal( $width );
if( $width <= 0 ) {
# BZZZT
- return "";
+ return null;
}
- if( $width > $this->width ) {
+
+ if( $width > $this->width && !$this->mustRender() ) {
# Don't make an image bigger than the source
- return $this->getURL();
+ return new ThumbnailImage( $this->getImagePath(), $this->getViewURL() );
}
- if ( (! file_exists( $thumbPath ) )
- || ( filemtime($thumbPath) < filemtime($this->imagePath) ) ) {
- # Squid purging
- if ( $wgUseSquid ) {
- $urlArr = Array(
- $wgInternalServer.$thumbUrl
- );
- wfPurgeSquidServers($urlArr);
- }
-
- if ( $wgUseImageMagick ) {
+ if ( (! file_exists( $thumbPath ) ) || ( filemtime($thumbPath) < filemtime($this->imagePath) ) ) {
+ if( $this->extension == 'svg' ) {
+ global $wgSVGConverters, $wgSVGConverter;
+ if( isset( $wgSVGConverters[$wgSVGConverter] ) ) {
+ global $wgSVGConverterPath;
+ $cmd = str_replace(
+ array( '$path/', '$width', '$input', '$output' ),
+ array( $wgSVGConverterPath,
+ $width,
+ escapeshellarg( $this->imagePath ),
+ escapeshellarg( $thumbPath ) ),
+ $wgSVGConverters[$wgSVGConverter] );
+ $conv = shell_exec( $cmd );
+ } else {
+ $conv = false;
+ }
+ } elseif ( $wgUseImageMagick ) {
# use ImageMagick
+ # Specify white background color, will be used for transparent images
+ # in Internet Explorer/Windows instead of default black.
$cmd = $wgImageMagickConvertCommand .
- " -quality 85 -geometry {$width} ".
+ " -quality 85 -background white -geometry {$width} ".
escapeshellarg($this->imagePath) . " " .
- escapeshellarg($thumbPath);
+ escapeshellarg($thumbPath);
$conv = shell_exec( $cmd );
} else {
# Use PHP's builtin GD library functions.
#
# First find out what kind of file this is, and select the correct
# input routine for this.
+
+ $truecolor = false;
switch( $this->type ) {
case 1: # GIF
break;
case 2: # JPG
$src_image = imagecreatefromjpeg( $this->imagePath );
+ $truecolor = true;
break;
case 3: # PNG
$src_image = imagecreatefrompng( $this->imagePath );
+ $truecolor = ( $this->bits > 8 );
break;
case 15: # WBMP for WML
$src_image = imagecreatefromwbmp( $this->imagePath );
$src_image = imagecreatefromxbm( $this->imagePath );
break;
default:
- return "Image type not supported";
+ return 'Image type not supported';
break;
}
$height = floor( $this->height * ( $width/$this->width ) );
- $dst_image = imagecreatetruecolor( $width, $height );
+ if ( $truecolor ) {
+ $dst_image = imagecreatetruecolor( $width, $height );
+ } else {
+ $dst_image = imagecreate( $width, $height );
+ }
imagecopyresampled( $dst_image, $src_image,
0,0,0,0,
$width, $height, $this->width, $this->height );
}
imagedestroy( $dst_image );
imagedestroy( $src_image );
-
-
}
#
# Check for zero-sized thumbnails. Those can be generated when
# no disk space is available or some other error occurs
#
- $thumbstat = stat( $thumbPath );
- if( $thumbstat["size"] == 0 )
- {
- unlink( $thumbPath );
+ if( file_exists( $thumbPath ) ) {
+ $thumbstat = stat( $thumbPath );
+ if( $thumbstat['size'] == 0 ) {
+ unlink( $thumbPath );
+ }
}
+ # Purge squid
+ # This has to be done after the image is updated and present for all machines on NFS,
+ # or else the old version might be stored into the squid again
+ if ( $wgUseSquid ) {
+ $urlArr = Array(
+ $wgInternalServer.$thumbUrl
+ );
+ wfPurgeSquidServers($urlArr);
+ }
}
- return $thumbUrl;
- } //function createThumb
+ return new ThumbnailImage( $thumbPath, $thumbUrl );
+ } // END OF function createThumb
+
+ /**
+ * Return the image history of this image, line by line.
+ * starts with current version, then old versions.
+ * uses $this->historyLine to check which line to return:
+ * 0 return line for current version
+ * 1 query for old versions, return first one
+ * 2, ... return next old version from above query
+ *
+ * @access public
+ */
+ function nextHistoryLine() {
+ $fname = 'Image::nextHistoryLine()';
+ $dbr =& wfGetDB( DB_SLAVE );
+ if ( $this->historyLine == 0 ) {// called for the first time, return line from cur
+ $this->historyRes = $dbr->select( 'image',
+ array( 'img_size','img_description','img_user','img_user_text','img_timestamp', "'' AS oi_archive_name" ),
+ array( 'img_name' => $this->title->getDBkey() ),
+ $fname
+ );
+ if ( 0 == wfNumRows( $this->historyRes ) ) {
+ return FALSE;
+ }
+ } else if ( $this->historyLine == 1 ) {
+ $this->historyRes = $dbr->select( 'oldimage',
+ array( 'oi_size AS img_size', 'oi_description AS img_description', 'oi_user AS img_user',
+ 'oi_user_text AS img_user_text', 'oi_timestamp AS img_timestamp', 'oi_archive_name'
+ ), array( 'oi_name' => $this->title->getDBkey() ), $fname, array( 'ORDER BY' => 'oi_timestamp DESC' )
+ );
+ }
+ $this->historyLine ++;
+
+ return $dbr->fetchObject( $this->historyRes );
+ }
+
+ /**
+ * Reset the history pointer to the first element of the history
+ * @access public
+ */
+ function resetHistory() {
+ $this->historyLine = 0;
+ }
+ /**
+ * Return true if the file is of a type that can't be directly
+ * rendered by typical browsers and needs to be re-rasterized.
+ * @return bool
+ */
+ function mustRender() {
+ return ( $this->extension == 'svg' );
+ }
+
+ /**
+ * Return the full filesystem path to the file. Note that this does
+ * not mean that a file actually exists under that location.
+ *
+ * This path depends on whether directory hashing is active or not,
+ * i.e. whether the images are all found in the same directory,
+ * or in hashed paths like /images/3/3c.
+ *
+ * @access public
+ * @param boolean $fromSharedDirectory Return the path to the file
+ * in a shared repository (see $wgUseSharedRepository and related
+ * options in DefaultSettings.php) instead of a local one.
+ *
+ */
+ function getFullPath( $fromSharedRepository = false ) {
+ global $wgUploadDirectory, $wgSharedUploadDirectory;
+ global $wgHashedUploadDirectory, $wgHashedSharedUploadDirectory;
+
+ $dir = $fromSharedRepository ? $wgSharedUploadDirectory :
+ $wgUploadDirectory;
+ $name = $this->name;
+ $fullpath = $dir . wfGetHashPath($name, $fromSharedRepository) . $name;
+ return $fullpath;
+ }
+
+ /**
+ * @return bool
+ * @static
+ */
+ function isKnownImageExtension( $ext ) {
+ static $extensions = array( 'svg', 'png', 'jpg', 'jpeg', 'gif', 'bmp', 'xbm' );
+ return in_array( $ext, $extensions );
+ }
+
} //class
+
+
+/**
+ * Returns the image directory of an image
+ * If the directory does not exist, it is created.
+ * The result is an absolute path.
+ *
+ * @param string $fname file name of the image file
+ * @access public
+ */
+function wfImageDir( $fname ) {
+ global $wgUploadDirectory, $wgHashedUploadDirectory;
+
+ if (!$wgHashedUploadDirectory) { return $wgUploadDirectory; }
+
+ $hash = md5( $fname );
+ $oldumask = umask(0);
+ $dest = $wgUploadDirectory . '/' . $hash{0};
+ if ( ! is_dir( $dest ) ) { mkdir( $dest, 0777 ); }
+ $dest .= '/' . substr( $hash, 0, 2 );
+ if ( ! is_dir( $dest ) ) { mkdir( $dest, 0777 ); }
+
+ umask( $oldumask );
+ return $dest;
+}
+
+/**
+ * Returns the image directory of an image's thubnail
+ * If the directory does not exist, it is created.
+ * The result is an absolute path.
+ *
+ * @param string $fname file name of the thumbnail file, including file size prefix
+ * @param string $subdir (optional) subdirectory of the image upload directory that should be used for storing the thumbnail. Default is 'thumb'
+ * @param boolean $shared (optional) use the shared upload directory
+ * @access public
+ */
+function wfImageThumbDir( $fname , $subdir='thumb', $shared=false) {
+ return wfImageArchiveDir( $fname, $subdir, $shared );
+}
+
+/**
+ * Returns the image directory of an image's old version
+ * If the directory does not exist, it is created.
+ * The result is an absolute path.
+ *
+ * @param string $fname file name of the thumbnail file, including file size prefix
+ * @param string $subdir (optional) subdirectory of the image upload directory that should be used for storing the old version. Default is 'archive'
+ * @param boolean $shared (optional) use the shared upload directory (only relevant for other functions which call this one)
+ * @access public
+ */
+function wfImageArchiveDir( $fname , $subdir='archive', $shared=false ) {
+ global $wgUploadDirectory, $wgHashedUploadDirectory,
+ $wgSharedUploadDirectory, $wgHashedSharedUploadDirectory;
+ $dir = $shared ? $wgSharedUploadDirectory : $wgUploadDirectory;
+ $hashdir = $shared ? $wgHashedSharedUploadDirectory : $wgHashedUploadDirectory;
+ if (!$hashdir) { return $dir.'/'.$subdir; }
+ $hash = md5( $fname );
+ $oldumask = umask(0);
+ # Suppress warning messages here; if the file itself can't
+ # be written we'll worry about it then.
+ $archive = $dir.'/'.$subdir;
+ if ( ! is_dir( $archive ) ) { @mkdir( $archive, 0777 ); }
+ $archive .= '/' . $hash{0};
+ if ( ! is_dir( $archive ) ) { @mkdir( $archive, 0777 ); }
+ $archive .= '/' . substr( $hash, 0, 2 );
+ if ( ! is_dir( $archive ) ) { @mkdir( $archive, 0777 ); }
+
+ umask( $oldumask );
+ return $archive;
+}
+
+
+/*
+ * Return the hash path component of an image path (URL or filesystem),
+ * e.g. "/3/3c/", or just "/" if hashing is not used.
+ *
+ * @param $dbkey The filesystem / database name of the file
+ * @param $fromSharedDirectory Use the shared file repository? It may
+ * use different hash settings from the local one.
+ */
+function wfGetHashPath ( $dbkey, $fromSharedDirectory = false ) {
+ global $wgHashedSharedUploadDirectory, $wgSharedUploadDirectory;
+ global $wgHashedUploadDirectory;
+
+ $ishashed = $fromSharedDirectory ? $wgHashedSharedUploadDirectory :
+ $wgHashedUploadDirectory;
+ if($ishashed) {
+ $hash = md5($dbkey);
+ return '/' . $hash{0} . '/' . substr( $hash, 0, 2 ) . '/';
+ } else {
+ return '/';
+ }
+}
+
+
+/**
+ * Record an image upload in the upload log.
+ */
+function wfRecordUpload( $name, $oldver, $size, $desc, $copyStatus = '', $source = '' ) {
+ global $wgUser, $wgLang, $wgTitle, $wgOut, $wgDeferredUpdateList;
+ global $wgUseCopyrightUpload;
+
+ $fname = 'wfRecordUpload';
+ $dbw =& wfGetDB( DB_MASTER );
+
+ # img_name must be unique
+ if ( !$dbw->indexUnique( 'image', 'img_name' ) && !$dbw->indexExists('image','PRIMARY') ) {
+ wfDebugDieBacktrace( 'Database schema not up to date, please run maintenance/archives/patch-image_name_unique.sql' );
+ }
+
+
+ $now = wfTimestampNow();
+ $size = IntVal( $size );
+
+ if ( $wgUseCopyrightUpload ) {
+ $textdesc = '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $desc . "\n" .
+ '== ' . wfMsg ( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
+ '== ' . wfMsg ( 'filesource' ) . " ==\n" . $source ;
+ }
+ else $textdesc = $desc ;
+
+ $now = wfTimestampNow();
+
+ # Test to see if the row exists using INSERT IGNORE
+ # This avoids race conditions by locking the row until the commit, and also
+ # doesn't deadlock. SELECT FOR UPDATE causes a deadlock for every race condition.
+ $dbw->insert( 'image',
+ array(
+ 'img_name' => $name,
+ 'img_size'=> $size,
+ 'img_timestamp' => $dbw->timestamp($now),
+ 'img_description' => $desc,
+ 'img_user' => $wgUser->getID(),
+ 'img_user_text' => $wgUser->getName(),
+ ), $fname, 'IGNORE'
+ );
+ $descTitle = Title::makeTitleSafe( NS_IMAGE, $name );
+
+ if ( $dbw->affectedRows() ) {
+ # Successfully inserted, this is a new image
+ $id = $descTitle->getArticleID();
+
+ if ( $id == 0 ) {
+ $article = new Article( $descTitle );
+ $article->insertNewArticle( $textdesc, $desc, false, false );
+ }
+ } else {
+ # Collision, this is an update of an image
+ # Get current image row for update
+ $s = $dbw->selectRow( 'image', array( 'img_name','img_size','img_timestamp','img_description',
+ 'img_user','img_user_text' ), array( 'img_name' => $name ), $fname, 'FOR UPDATE' );
+
+ # Insert it into oldimage
+ $dbw->insert( 'oldimage',
+ array(
+ 'oi_name' => $s->img_name,
+ 'oi_archive_name' => $oldver,
+ 'oi_size' => $s->img_size,
+ 'oi_timestamp' => $dbw->timestamp($s->img_timestamp),
+ 'oi_description' => $s->img_description,
+ 'oi_user' => $s->img_user,
+ 'oi_user_text' => $s->img_user_text
+ ), $fname
+ );
+
+ # Update the current image row
+ $dbw->update( 'image',
+ array( /* SET */
+ 'img_size' => $size,
+ 'img_timestamp' => $dbw->timestamp(),
+ 'img_user' => $wgUser->getID(),
+ 'img_user_text' => $wgUser->getName(),
+ 'img_description' => $desc,
+ ), array( /* WHERE */
+ 'img_name' => $name
+ ), $fname
+ );
+
+ # Invalidate the cache for the description page
+ $descTitle->invalidateCache();
+ }
+
+ $log = new LogPage( 'upload' );
+ $log->addEntry( 'upload', $descTitle, $desc );
+}
+
+/**
+ * Returns the image URL of an image's old version
+ *
+ * @param string $fname file name of the image file
+ * @param string $subdir (optional) subdirectory of the image upload directory that is used by the old version. Default is 'archive'
+ * @access public
+ */
+function wfImageArchiveUrl( $name, $subdir='archive' ) {
+ global $wgUploadPath, $wgHashedUploadDirectory;
+
+ if ($wgHashedUploadDirectory) {
+ $hash = md5( substr( $name, 15) );
+ $url = $wgUploadPath.'/'.$subdir.'/' . $hash{0} . '/' .
+ substr( $hash, 0, 2 ) . '/'.$name;
+ } else {
+ $url = $wgUploadPath.'/'.$subdir.'/'.$name;
+ }
+ return wfUrlencode($url);
+}
+
+/**
+ * Return a rounded pixel equivalent for a labeled CSS/SVG length.
+ * http://www.w3.org/TR/SVG11/coords.html#UnitIdentifiers
+ *
+ * @param string $length
+ * @return int Length in pixels
+ */
+function scaleSVGUnit( $length ) {
+ static $unitLength = array(
+ 'px' => 1.0,
+ 'pt' => 1.25,
+ 'pc' => 15.0,
+ 'mm' => 3.543307,
+ 'cm' => 35.43307,
+ 'in' => 90.0,
+ '' => 1.0, // "User units" pixels by default
+ '%' => 2.0, // Fake it!
+ );
+ if( preg_match( '/^(\d+)(em|ex|px|pt|pc|cm|mm|in|%|)$/', $length, $matches ) ) {
+ $length = FloatVal( $matches[1] );
+ $unit = $matches[2];
+ return round( $length * $unitLength[$unit] );
+ } else {
+ // Assume pixels
+ return round( FloatVal( $length ) );
+ }
+}
+
+/**
+ * Compatible with PHP getimagesize()
+ * @todo support gzipped SVGZ
+ * @todo check XML more carefully
+ * @todo sensible defaults
+ *
+ * @param string $filename
+ * @return array
+ */
+function getSVGsize( $filename ) {
+ $width = 256;
+ $height = 256;
+
+ // Read a chunk of the file
+ $f = fopen( $filename, "rt" );
+ if( !$f ) return false;
+ $chunk = fread( $f, 4096 );
+ fclose( $f );
+
+ // Uber-crappy hack! Run through a real XML parser.
+ if( !preg_match( '/<svg\s*([^>]*)\s*>/s', $chunk, $matches ) ) {
+ return false;
+ }
+ $tag = $matches[1];
+ if( preg_match( '/\bwidth\s*=\s*("[^"]+"|\'[^\']+\')/s', $tag, $matches ) ) {
+ $width = scaleSVGUnit( trim( substr( $matches[1], 1, -1 ) ) );
+ }
+ if( preg_match( '/\bheight\s*=\s*("[^"]+"|\'[^\']+\')/s', $tag, $matches ) ) {
+ $height = scaleSVGUnit( trim( substr( $matches[1], 1, -1 ) ) );
+ }
+
+ return array( $width, $height, 'SVG',
+ "width=\"$width\" height=\"$height\"" );
+}
+
+
+/**
+ * Wrapper class for thumbnail images
+ * @package MediaWiki
+ */
+class ThumbnailImage {
+ /**
+ * @param string $path Filesystem path to the thumb
+ * @param string $url URL path to the thumb
+ * @access private
+ */
+ function ThumbnailImage( $path, $url ) {
+ $this->url = $url;
+ $this->path = $path;
+ $size = @getimagesize( $this->path );
+ if( $size ) {
+ $this->width = $size[0];
+ $this->height = $size[1];
+ } else {
+ $this->width = 0;
+ $this->height = 0;
+ }
+ }
+
+ /**
+ * @return string The thumbnail URL
+ */
+ function getUrl() {
+ return $this->url;
+ }
+
+ /**
+ * Return HTML <img ... /> tag for the thumbnail, will include
+ * width and height attributes and a blank alt text (as required).
+ *
+ * You can set or override additional attributes by passing an
+ * associative array of name => data pairs. The data will be escaped
+ * for HTML output, so should be in plaintext.
+ *
+ * @param array $attribs
+ * @return string
+ * @access public
+ */
+ function toHtml( $attribs = array() ) {
+ $attribs['src'] = $this->url;
+ $attribs['width'] = $this->width;
+ $attribs['height'] = $this->height;
+ if( !isset( $attribs['alt'] ) ) $attribs['alt'] = '';
+
+ $html = '<img ';
+ foreach( $attribs as $name => $data ) {
+ $html .= $name . '="' . htmlspecialchars( $data ) . '" ';
+ }
+ $html .= '/>';
+ return $html;
+ }
+
+ /**
+ * Return the size of the thumbnail file, in bytes or false if the file
+ * can't be stat().
+ * @access public
+ */
+ function getSize() {
+ $st = stat( $this->path );
+ if( $st ) {
+ return $st['size'];
+ } else {
+ return false;
+ }
+ }
+}
+?>
dépôts / lhc / web / wiklou.git / blobdiff