ext/javax.mail.mbox/src/com/sun/mail/mbox/DefaultMailbox.java

   1 /*
   2  * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v. 2.0, which is available at
   6  * http://www.eclipse.org/legal/epl-2.0.
   7  *
   8  * This Source Code may also be made available under the following Secondary
   9  * Licenses when the conditions for such availability set forth in the
  10  * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
  11  * version 2 with the GNU Classpath Exception, which is available at
  12  * https://www.gnu.org/software/classpath/license.html.
  13  *
  14  * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
  15  */
  16
  17 package com.sun.mail.mbox;
  18
  19 import java.io.*;
  20
  21 public class DefaultMailbox extends Mailbox {
  22     private final String home;
  23
  24     private static final boolean homeRelative =
  25                                 Boolean.getBoolean("mail.mbox.homerelative");
  26
  27     public DefaultMailbox() {
  28         home = System.getProperty("user.home");
  29     }
  30
  31     public MailFile getMailFile(String user, String folder) {
  32         return new DefaultMailFile(filename(user, folder));
  33     }
  34
  35     public String filename(String user, String folder) {
  36         try {
  37             char c = folder.charAt(0);
  38             if (c == File.separatorChar) {
  39                 return folder;
  40             } else if (c == '~') {
  41                 int i = folder.indexOf(File.separatorChar);
  42                 String tail = "";
  43                 if (i > 0) {
  44                     tail = folder.substring(i);
  45                     folder = folder.substring(0, i);
  46                 }
  47                 return home + tail;
  48             } else {
  49                 if (folder.equalsIgnoreCase("INBOX"))
  50                     folder = "INBOX";
  51                 if (homeRelative)
  52                     return home + File.separator + folder;
  53                 else
  54                     return folder;
  55             }
  56         } catch (StringIndexOutOfBoundsException e) {
  57             return folder;
  58         }
  59     }
  60 }
  61
  62 class DefaultMailFile extends File implements MailFile {
  63     protected transient RandomAccessFile file;
  64
  65     private static final long serialVersionUID = 3713116697523761684L;
  66
  67     DefaultMailFile(String name) {
  68         super(name);
  69     }
  70
  71     public boolean lock(String mode) {
  72         try {
  73             file = new RandomAccessFile(this, mode);
  74             return true;
  75         } catch (FileNotFoundException fe) {
  76             return false;
  77         } catch (IOException ie) {
  78             file = null;
  79             return false;
  80         }
  81     }
  82
  83     public void unlock() {
  84         if (file != null) {
  85             try {
  86                 file.close();
  87             } catch (IOException e) {
  88                 // ignore it
  89             }
  90             file = null;
  91         }
  92     }
  93
  94     public void touchlock() {
  95     }
  96
  97     public FileDescriptor getFD() {
  98         if (file == null)
  99             return null;
 100         try {
 101             return file.getFD();
 102         } catch (IOException e) {
 103             return null;
 104         }
 105     }
 106 }