Hack to allow testing with xboard

xtrn/chess/xboard.js

+#!/synchronet/src/src/sbbs3/gcc.freebsd.exe.stephen.hurd.local/jsexec
+load("utils.js");
+load("pieces.js");
+load("board.js");
+
+var b;
+var cmd;
+var m;
+var piece;
+var f=new File("/tmp/chesslog.txt");
+var reason;
+f.open("a");
+
+while(1) {
+	cmd=readln();
+
+f.writeln("CMD: "+cmd);
+f.flush();
+	switch(cmd) {
+		default:
+			if((m=cmd.match(/^([a-h][1-8])([a-h][1-8])$/))!=null) {
+				piece=b.getPiece(parsePos(m[1]));
+				if(piece) {
+					if(piece.moveTo(m[2])) {
+						print('move '+m[1]+m[2]);
+						f.writeln("Moved "+m[1]+m[2]);
+						f.flush();
+						break;
+					}
+					else {
+						print('Illegal move (no worky): '+m[1]+m[2]);
+						f.writeln('Illegal move (no worky): '+m[1]+m[2]);
+						f.flush();
+					}
+				}
+				else {
+					print('Illegal move (no such piece): '+m[1]+m[2]);
+					f.writeln('Illegal move (no such piece): '+m[1]+m[2]);
+					f.flush();
+				}
+			}
+			break;
+		case 'new':
+			b=new Board();
+			break;
+		case 'quit':
+			exit(0);
+	}
+}