Don’t add a class “null” to an image if there is to be none

diff --git a/src/main/java/net/pterodactylus/sone/template/ImageLinkFilter.java b/src/main/java/net/pterodactylus/sone/template/ImageLinkFilter.java
index 9ede851..458d40f 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/template/ImageLinkFilter.java
+++ b/src/main/java/net/pterodactylus/sone/template/ImageLinkFilter.java
@@ -33,6 +33,7 @@ import net.pterodactylus.util.template.TemplateContext;
 import net.pterodactylus.util.template.TemplateContextFactory;
 import net.pterodactylus.util.template.TemplateParser;
 
+import com.google.common.base.Function;
 import com.google.common.base.Optional;
 
 /**
@@ -79,7 +80,12 @@ public class ImageLinkFilter implements Filter {
                if (image == null) {
                        return null;
                }
-               String imageClass = valueOf(parameters.get("class"));
+               String imageClass = Optional.fromNullable(parameters.get("class")).transform(new Function<Object, String>() {
+                       @Override
+                       public String apply(Object input) {
+                               return (input != null) ? input.toString() : null;
+                       }
+               }).orNull();
                int maxWidth = parseInt(valueOf(parameters.get("max-width")), MAX_VALUE);
                int maxHeight = parseInt(valueOf(parameters.get("max-height")), MAX_VALUE);
                String mode = valueOf(parameters.get("mode"));