+ static class RenderSVGContext {
+
+ Map<String,StringBuilder> documents = new HashMap<>();
+
+ public void append(String[] keys, String svgText) {
+ for(String key : keys) append(key, svgText);
+ }
+
+ public void append(String key, String svgText) {
+ StringBuilder builder = documents.get(key);
+ if(builder == null) {
+ builder = new StringBuilder();
+ documents.put(key, builder);
+ }
+ builder.append(svgText);
+ }
+
+ public void append(RenderSVGContext other) {
+ for(String key : other.documents.keySet()) {
+ append(key, other.get(key));
+ }
+ }
+
+ public String get(String key) {
+ StringBuilder builder = documents.get(key);
+ if(builder == null) return "";
+ else return builder.toString();
+ }
+
+ }
+