Guard against null content

philwebb · philwebb · commit b8cb33094ed7 · 2021-03-09T09:40:17.000-08:00
Closes gh-10
diff --git a/src/main/java/io/spring/asciidoctor/backend/codetools/ListingContentConverters.java b/src/main/java/io/spring/asciidoctor/backend/codetools/ListingContentConverters.java
@@ -51,9 +51,10 @@ public static RubyObject content(RubyObject node) {
 		Block listingBlock = (Block) NodeConverter.createASTNode(node);
 		String content = (String) listingBlock.getContent();
 		for (ListingContentConverter converter : converters) {
+			content = (content != null) ? content : "";
 			content = converter.convert(listingBlock, content);
 		}
-		return node.getRuntime().newString(content);
+		return node.getRuntime().newString(content != null ? content : "");
 	}
 
 }

Original file line number	Diff line number	Diff line change
`@@ -51,9 +51,10 @@ public static RubyObject content(RubyObject node) {`
`51`	`51`	`Block listingBlock = (Block) NodeConverter.createASTNode(node);`
`52`	`52`	`String content = (String) listingBlock.getContent();`
`53`	`53`	`for (ListingContentConverter converter : converters) {`
	`54`	`+ content = (content != null) ? content : "";`
`54`	`55`	`content = converter.convert(listingBlock, content);`
`55`	`56`	`}`
`56`		`- return node.getRuntime().newString(content);`
	`57`	`+ return node.getRuntime().newString(content != null ? content : "");`
`57`	`58`	`}`
`58`	`59`
`59`	`60`	`}`