private static CategoryPath getCategory(String catName) {
		CategoryPath rootCat = CategoryPath.ROOT;
		if (catName == null || catName.length() == 0) {
			return rootCat;
		}
		return new CategoryPath(rootCat, catName);
	}
Parse a C format integer value

@param strValue value to parse
@return long value if parsable as an integer, null otherwise
Ghidra/Features/Base/src/main/java/ghidra/app/util/cparser/CPP/DefineTable.java