+
+ /*
+ * format validation
+ */
+ boolean valid = true;
+ if (fields.length < 2)
+ {
+ /*
+ * need at least A=B here
+ */
+ valid = false;
+ }
+ else if (fields[0].isEmpty() || fields[0].contains(COMMA))
+ {
+ /*
+ * A,B=C is not a valid start, nor is =C
+ */
+ valid = false;
+ }
+ else
+ {
+ for (int i = 1; i < fields.length - 1; i++)
+ {
+ if (fields[i].isEmpty() || !fields[i].contains(COMMA))
+ {
+ /*
+ * intermediate tokens must include value,name
+ */
+ valid = false;
+ }
+ }
+ }
+
+ if (!valid)
+ {
+ System.err.println(INVALID_GFF_ATTRIBUTE_FORMAT + s);
+ return map;
+ }
+