Add UI to discover translated SVG files.

[lhc/web/wiklou.git] / includes / media / SVG.php

diff --git a/includes/media/SVG.php b/includes/media/SVG.php
index 6864de4..5a61bcc 100644 (file)
--- a/includes/media/SVG.php
+++ b/includes/media/SVG.php
@@ -76,6 +76,43 @@ class SvgHandler extends ImageHandler {
                return false;
        }
 
+       /**
+        * Which languages (systemLanguage attribute) is supported.
+        *
+        * @note This list is not guaranteed to be exhaustive.
+        * To avoid OOM errors, we only look at first bit of a file.
+        * Thus all languages on this list are present in the file,
+        * but its possible for the file to have a language not on
+        * this list.
+        *
+        * @param File $file
+        * @return Array of language codes, or empty if no language switching supported.
+        */
+       public function getAvailableLanguages( File $file ) {
+               $metadata = $file->getMetadata();
+               $langList = array();
+               if ( $metadata ) {
+                       $metadata = $this->unpackMetadata( $metadata );
+                       if ( isset( $metadata['translations'] ) ) {
+                               foreach( $metadata['translations'] as $lang => $langType ) {
+                                       if ( $langType === SvgReader::LANG_FULL_MATCH ) {
+                                               $langList[] = $lang;
+                                       }
+                               }
+                       }
+               }
+               return $langList;
+       }
+
+       /**
+        * What language to render file in if none selected.
+        *
+        * @return String language code.
+        */
+       public function getDefaultRenderLanguage( File $file ) {
+               return 'en';
+       }
+
        /**
         * We do not support making animated svg thumbnails
         */
@@ -129,7 +166,7 @@ class SvgHandler extends ImageHandler {
                $clientHeight = $params['height'];
                $physicalWidth = $params['physicalWidth'];
                $physicalHeight = $params['physicalHeight'];
-               $lang = isset( $params['lang'] ) ? $params['lang'] : 'en';
+               $lang = isset( $params['lang'] ) ? $params['lang'] : $this->getDefaultRenderLanguage( $image );
 
                if ( $flags & self::TRANSFORM_LATER ) {
                        return new ThumbnailImage( $image, $dstUrl, $dstPath, $params );