1 /*

     2  * Copyright 1997 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /**/

    25 

    26 import java.io.*;

    27 

    28 

    29 public class CharGenerator {

    30 

    31     private IntGenerator r;

    32     int min = 0, max = 0xffff;

    33 

    34     public CharGenerator(IntGenerator r) {

    35         this.r = r;

    36     }

    37 

    38     public CharGenerator(IntGenerator r, int min, int max) {

    39         this.r = r;

    40         this.min = min;

    41         this.max = max;

    42     }

    43 

    44     public char next() {

    45         char c;

    46         do

    47             c = (char) (r.next(max - min) + min);

    48         while ((c == '\r') || (c == '\n')

    49                || ((c >= 0xd800) && (c <= 0xdfff))

    50                || (c == 0xfffe));

    51         return c;

    52     }

    53 }