public void escape(Writer writer, String str) throws IOException {
int len = str.length();
for (int i = 0; i < len; i++) {
char c = str.charAt(i);
String entityName = this.entityName(c);
if (entityName == null) {
if (c > 0x7F) {
writer.write("&#");
writer.write(Integer.toString(c, 10));
writer.write(';');
} else {
writer.write(c);
}
} else {
writer.write('&');
writer.write(entityName);
writer.write(';');