In case an image is not found, try uppercasing its extension and looking for it again.

(yay for case-insensitive contexts!)

svn path=/trunk/KDE/kdegraphics/okular/; revision=825261

generators/xps/generator_xps.cpp

@@ -1104,13 +1104,24 @@ QImage XpsPage::loadImageFromFile( const QString &fileName )
         return QImage();
     }
 
-    // TODO: consider case-insensitiveness (eg image.png vs existing image.PNG)
+    QString absoluteFileName = absolutePath( entryPath( m_fileName ), fileName );
-    const QString absoluteFileName = absolutePath( entryPath( m_fileName ), fileName );
     const KZipFileEntry* imageFile = static_cast< const KZipFileEntry * >( m_file->xpsArchive()->directory()->entry( absoluteFileName ) );
+    if ( !imageFile ) {
+        // image not found, try uppercasing the extension
+        const int dotPos = absoluteFileName.lastIndexOf( QLatin1Char( '.' ) );
+        const QChar lastChar = absoluteFileName.at( absoluteFileName.count() - 1 );
+        if ( dotPos != -1 ) {
+            for ( int i = dotPos + 1; i < absoluteFileName.count(); ++i ) {
+                absoluteFileName[i] = absoluteFileName[i].toUpper();
+            }
+
+            imageFile = static_cast< const KZipFileEntry * >( m_file->xpsArchive()->directory()->entry( absoluteFileName ) );
+        }
         if ( !imageFile ) {
             // image not found
             return QImage();
         }
+    }
 
     /* WORKAROUND:
         XPS standard requires to use 96dpi for images which doesn't have dpi specified (in file). When Qt loads such an image,