1 /*
2  * SiteName.java
3  *
4  * Copyright (C) 2004 Peter Graves
5  * $Id$
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * as published by the Free Software Foundation; either version 2
10  * of the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
20  *
21  * As a special exception, the copyright holders of this library give you
22  * permission to link this library with independent modules to produce an
23  * executable, regardless of the license terms of these independent
24  * modules, and to copy and distribute the resulting executable under
25  * terms of your choice, provided that you also meet, for each linked
26  * independent module, the terms and conditions of the license of that
27  * module.  An independent module is a module which is not derived from
28  * or based on this library.  If you modify this library, you may extend
29  * this exception to your version of the library, but you are not
30  * obligated to do so.  If you do not wish to do so, delete this
31  * exception statement from your version.
32  */
33 
34 package org.armedbear.lisp;
35 
36 import static org.armedbear.lisp.Lisp.*;
37 
38 import java.net.InetAddress;
39 import java.net.UnknownHostException;
40 
41 public final class SiteName
42 {
getHostName()43     static LispObject getHostName()
44     {
45         String hostName = null;
46         InetAddress addr;
47         try {
48             addr = InetAddress.getLocalHost();
49         }
50         catch (UnknownHostException e) {
51             addr = null;
52         }
53         if (addr != null)
54             hostName = addr.getHostName();
55 
56         return hostName != null ? new SimpleString(hostName) : NIL;
57     }
58 
59     private static final Primitive MACHINE_INSTANCE =
60         new Primitive("machine-instance")
61     {
62         @Override
63         public LispObject execute()
64         {
65             return getHostName();
66         }
67     };
68 
69     private static final Primitive LONG_SITE_NAME =
70         new Primitive("long-site-name")
71     {
72         @Override
73         public LispObject execute()
74         {
75             return getHostName();
76         }
77     };
78 
79     private static final Primitive SHORT_SITE_NAME =
80         new Primitive("short-site-name")
81     {
82         @Override
83         public LispObject execute()
84         {
85             return getHostName();
86         }
87     };
88 }
89