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-rw-r--r--includes/ImageFunctions.php479
1 files changed, 256 insertions, 223 deletions
diff --git a/includes/ImageFunctions.php b/includes/ImageFunctions.php
index a66b4d79..d182d527 100644
--- a/includes/ImageFunctions.php
+++ b/includes/ImageFunctions.php
@@ -1,223 +1,256 @@
-<?php
-
-/**
- * Returns the image directory of an image
- * The result is an absolute path.
- *
- * This function is called from thumb.php before Setup.php is included
- *
- * @param $fname String: file name of the image file.
- * @public
- */
-function wfImageDir( $fname ) {
- global $wgUploadDirectory, $wgHashedUploadDirectory;
-
- if (!$wgHashedUploadDirectory) { return $wgUploadDirectory; }
-
- $hash = md5( $fname );
- $dest = $wgUploadDirectory . '/' . $hash{0} . '/' . substr( $hash, 0, 2 );
-
- return $dest;
-}
-
-/**
- * Returns the image directory of an image's thubnail
- * The result is an absolute path.
- *
- * This function is called from thumb.php before Setup.php is included
- *
- * @param $fname String: file name of the original image file
- * @param $shared Boolean: (optional) use the shared upload directory (default: 'false').
- * @public
- */
-function wfImageThumbDir( $fname, $shared = false ) {
- $base = wfImageArchiveDir( $fname, 'thumb', $shared );
- if ( Image::isHashed( $shared ) ) {
- $dir = "$base/$fname";
- } else {
- $dir = $base;
- }
-
- return $dir;
-}
-
-/**
- * Old thumbnail directory, kept for conversion
- */
-function wfDeprecatedThumbDir( $thumbName , $subdir='thumb', $shared=false) {
- return wfImageArchiveDir( $thumbName, $subdir, $shared );
-}
-
-/**
- * Returns the image directory of an image's old version
- * The result is an absolute path.
- *
- * This function is called from thumb.php before Setup.php is included
- *
- * @param $fname String: file name of the thumbnail file, including file size prefix.
- * @param $subdir String: subdirectory of the image upload directory that should be used for storing the old version. Default is 'archive'.
- * @param $shared Boolean use the shared upload directory (only relevant for other functions which call this one). Default is 'false'.
- * @public
- */
-function wfImageArchiveDir( $fname , $subdir='archive', $shared=false ) {
- global $wgUploadDirectory, $wgHashedUploadDirectory;
- global $wgSharedUploadDirectory, $wgHashedSharedUploadDirectory;
- $dir = $shared ? $wgSharedUploadDirectory : $wgUploadDirectory;
- $hashdir = $shared ? $wgHashedSharedUploadDirectory : $wgHashedUploadDirectory;
- if (!$hashdir) { return $dir.'/'.$subdir; }
- $hash = md5( $fname );
-
- return $dir.'/'.$subdir.'/'.$hash[0].'/'.substr( $hash, 0, 2 );
-}
-
-
-/*
- * 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 ) {
- if( Image::isHashed( $fromSharedDirectory ) ) {
- $hash = md5($dbkey);
- return '/' . $hash{0} . '/' . substr( $hash, 0, 2 ) . '/';
- } else {
- return '/';
- }
-}
-
-/**
- * Returns the image URL of an image's old version
- *
- * @param $name String: file name of the image file
- * @param $subdir String: (optional) subdirectory of the image upload directory that is used by the old version. Default is 'archive'
- * @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 $length String: CSS/SVG length.
- * @return Integer: length in pixels
- */
-function wfScaleSVGUnit( $length ) {
- static $unitLength = array(
- 'px' => 1.0,
- 'pt' => 1.25,
- 'pc' => 15.0,
- 'mm' => 3.543307,
- 'cm' => 35.43307,
- 'in' => 90.0,
- '' => 1.0, // "User units" pixels by default
- '%' => 2.0, // Fake it!
- );
- if( preg_match( '/^(\d+(?:\.\d+)?)(em|ex|px|pt|pc|cm|mm|in|%|)$/', $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 $filename String: full name of the file (passed to php fopen()).
- * @return array
- */
-function wfGetSVGsize( $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 = wfScaleSVGUnit( trim( substr( $matches[1], 1, -1 ) ) );
- }
- if( preg_match( '/\bheight\s*=\s*("[^"]+"|\'[^\']+\')/s', $tag, $matches ) ) {
- $height = wfScaleSVGUnit( trim( substr( $matches[1], 1, -1 ) ) );
- }
-
- return array( $width, $height, 'SVG',
- "width=\"$width\" height=\"$height\"" );
-}
-
-/**
- * Determine if an image exists on the 'bad image list'.
- *
- * @param $name String: the image name to check
- * @return bool
- */
-function wfIsBadImage( $name ) {
- static $titleList = false;
- wfProfileIn( __METHOD__ );
- $bad = false;
- if( wfRunHooks( 'BadImage', array( $name, &$bad ) ) ) {
- if( !$titleList ) {
- # Build the list now
- $titleList = array();
- $lines = explode( "\n", wfMsgForContent( 'bad_image_list' ) );
- foreach( $lines as $line ) {
- if( preg_match( '/^\*\s*\[\[:?(.*?)\]\]/i', $line, $matches ) ) {
- $title = Title::newFromText( $matches[1] );
- if( is_object( $title ) && $title->getNamespace() == NS_IMAGE )
- $titleList[ $title->getDBkey() ] = true;
- }
- }
- }
- wfProfileOut( __METHOD__ );
- return array_key_exists( $name, $titleList );
- } else {
- wfProfileOut( __METHOD__ );
- return $bad;
- }
-}
-
-/**
- * Calculate the largest thumbnail width for a given original file size
- * such that the thumbnail's height is at most $maxHeight.
- * @param $boxWidth Integer Width of the thumbnail box.
- * @param $boxHeight Integer Height of the thumbnail box.
- * @param $maxHeight Integer Maximum height expected for the thumbnail.
- * @return Integer.
- */
-function wfFitBoxWidth( $boxWidth, $boxHeight, $maxHeight ) {
- $idealWidth = $boxWidth * $maxHeight / $boxHeight;
- $roundedUp = ceil( $idealWidth );
- if( round( $roundedUp * $boxHeight / $boxWidth ) > $maxHeight )
- return floor( $idealWidth );
- else
- return $roundedUp;
-}
-
-
-?>
+<?php
+
+/**
+ * Returns the image directory of an image
+ * The result is an absolute path.
+ *
+ * This function is called from thumb.php before Setup.php is included
+ *
+ * @param $fname String: file name of the image file.
+ * @public
+ */
+function wfImageDir( $fname ) {
+ global $wgUploadDirectory, $wgHashedUploadDirectory;
+
+ if (!$wgHashedUploadDirectory) { return $wgUploadDirectory; }
+
+ $hash = md5( $fname );
+ $dest = $wgUploadDirectory . '/' . $hash{0} . '/' . substr( $hash, 0, 2 );
+
+ return $dest;
+}
+
+/**
+ * Returns the image directory of an image's thubnail
+ * The result is an absolute path.
+ *
+ * This function is called from thumb.php before Setup.php is included
+ *
+ * @param $fname String: file name of the original image file
+ * @param $shared Boolean: (optional) use the shared upload directory (default: 'false').
+ * @public
+ */
+function wfImageThumbDir( $fname, $shared = false ) {
+ $base = wfImageArchiveDir( $fname, 'thumb', $shared );
+ if ( Image::isHashed( $shared ) ) {
+ $dir = "$base/$fname";
+ } else {
+ $dir = $base;
+ }
+
+ return $dir;
+}
+
+/**
+ * Old thumbnail directory, kept for conversion
+ */
+function wfDeprecatedThumbDir( $thumbName , $subdir='thumb', $shared=false) {
+ return wfImageArchiveDir( $thumbName, $subdir, $shared );
+}
+
+/**
+ * Returns the image directory of an image's old version
+ * The result is an absolute path.
+ *
+ * This function is called from thumb.php before Setup.php is included
+ *
+ * @param $fname String: file name of the thumbnail file, including file size prefix.
+ * @param $subdir String: subdirectory of the image upload directory that should be used for storing the old version. Default is 'archive'.
+ * @param $shared Boolean use the shared upload directory (only relevant for other functions which call this one). Default is 'false'.
+ * @public
+ */
+function wfImageArchiveDir( $fname , $subdir='archive', $shared=false ) {
+ global $wgUploadDirectory, $wgHashedUploadDirectory;
+ global $wgSharedUploadDirectory, $wgHashedSharedUploadDirectory;
+ $dir = $shared ? $wgSharedUploadDirectory : $wgUploadDirectory;
+ $hashdir = $shared ? $wgHashedSharedUploadDirectory : $wgHashedUploadDirectory;
+ if (!$hashdir) { return $dir.'/'.$subdir; }
+ $hash = md5( $fname );
+
+ return $dir.'/'.$subdir.'/'.$hash[0].'/'.substr( $hash, 0, 2 );
+}
+
+
+/*
+ * 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 ) {
+ if( Image::isHashed( $fromSharedDirectory ) ) {
+ $hash = md5($dbkey);
+ return '/' . $hash{0} . '/' . substr( $hash, 0, 2 ) . '/';
+ } else {
+ return '/';
+ }
+}
+
+/**
+ * Returns the image URL of an image's old version
+ *
+ * @param $name String: file name of the image file
+ * @param $subdir String: (optional) subdirectory of the image upload directory that is used by the old version. Default is 'archive'
+ * @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 $length String: CSS/SVG length.
+ * @return Integer: length in pixels
+ */
+function wfScaleSVGUnit( $length ) {
+ static $unitLength = array(
+ 'px' => 1.0,
+ 'pt' => 1.25,
+ 'pc' => 15.0,
+ 'mm' => 3.543307,
+ 'cm' => 35.43307,
+ 'in' => 90.0,
+ '' => 1.0, // "User units" pixels by default
+ '%' => 2.0, // Fake it!
+ );
+ if( preg_match( '/^(\d+(?:\.\d+)?)(em|ex|px|pt|pc|cm|mm|in|%|)$/', $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 $filename String: full name of the file (passed to php fopen()).
+ * @return array
+ */
+function wfGetSVGsize( $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 = wfScaleSVGUnit( trim( substr( $matches[1], 1, -1 ) ) );
+ }
+ if( preg_match( '/\bheight\s*=\s*("[^"]+"|\'[^\']+\')/s', $tag, $matches ) ) {
+ $height = wfScaleSVGUnit( trim( substr( $matches[1], 1, -1 ) ) );
+ }
+
+ return array( $width, $height, 'SVG',
+ "width=\"$width\" height=\"$height\"" );
+}
+
+/**
+ * Determine if an image exists on the 'bad image list'.
+ *
+ * The format of MediaWiki:Bad_image_list is as follows:
+ * * Only list items (lines starting with "*") are considered
+ * * The first link on a line must be a link to a bad image
+ * * Any subsequent links on the same line are considered to be exceptions,
+ * i.e. articles where the image may occur inline.
+ *
+ * @param string $name the image name to check
+ * @param Title $contextTitle The page on which the image occurs, if known
+ * @return bool
+ */
+function wfIsBadImage( $name, $contextTitle = false ) {
+ static $badImages = false;
+ wfProfileIn( __METHOD__ );
+
+ # Run the extension hook
+ $bad = false;
+ if( !wfRunHooks( 'BadImage', array( $name, &$bad ) ) ) {
+ wfProfileOut( __METHOD__ );
+ return $bad;
+ }
+
+ if( !$badImages ) {
+ # Build the list now
+ $badImages = array();
+ $lines = explode( "\n", wfMsgForContent( 'bad_image_list' ) );
+ foreach( $lines as $line ) {
+ # List items only
+ if ( substr( $line, 0, 1 ) !== '*' ) {
+ continue;
+ }
+
+ # Find all links
+ if ( !preg_match_all( '/\[\[:?(.*?)\]\]/', $line, $m ) ) {
+ continue;
+ }
+
+ $exceptions = array();
+ $imageDBkey = false;
+ foreach ( $m[1] as $i => $titleText ) {
+ $title = Title::newFromText( $titleText );
+ if ( !is_null( $title ) ) {
+ if ( $i == 0 ) {
+ $imageDBkey = $title->getDBkey();
+ } else {
+ $exceptions[$title->getPrefixedDBkey()] = true;
+ }
+ }
+ }
+
+ if ( $imageDBkey !== false ) {
+ $badImages[$imageDBkey] = $exceptions;
+ }
+ }
+ }
+
+ $contextKey = $contextTitle ? $contextTitle->getPrefixedDBkey() : false;
+ $bad = isset( $badImages[$name] ) && !isset( $badImages[$name][$contextKey] );
+ wfProfileOut( __METHOD__ );
+ return $bad;
+}
+
+/**
+ * Calculate the largest thumbnail width for a given original file size
+ * such that the thumbnail's height is at most $maxHeight.
+ * @param $boxWidth Integer Width of the thumbnail box.
+ * @param $boxHeight Integer Height of the thumbnail box.
+ * @param $maxHeight Integer Maximum height expected for the thumbnail.
+ * @return Integer.
+ */
+function wfFitBoxWidth( $boxWidth, $boxHeight, $maxHeight ) {
+ $idealWidth = $boxWidth * $maxHeight / $boxHeight;
+ $roundedUp = ceil( $idealWidth );
+ if( round( $roundedUp * $boxHeight / $boxWidth ) > $maxHeight )
+ return floor( $idealWidth );
+ else
+ return $roundedUp;
+}
+
+
+?>