8.6 Assignment #5: Entities

due: Wednesday, Nov 5

Create a DTD for the given XML document, and provide a SAX program that validates the XML file against the DTD.

• The entity names should be defined to equal the code numbers provided to the corresponding white pieces in Unicode (within the table 2600-26FF).
• The DTD file should carry a name different than chess.dtd, and the validator program should rely on a catalog to locate the file.
• The program should get as arguments the location of the catalog file and the XML file.