Introduce mbox support

[gpl/argeo-slc.git] / ext / javax.mail.mbox / src / com / sun / mail / mbox / UNIXFolder.java

diff --git a/ext/javax.mail.mbox/src/com/sun/mail/mbox/UNIXFolder.java b/ext/javax.mail.mbox/src/com/sun/mail/mbox/UNIXFolder.java
new file mode 100644 (file)
index 0000000..13dc30a
--- /dev/null
+++ b/ext/javax.mail.mbox/src/com/sun/mail/mbox/UNIXFolder.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+
+package com.sun.mail.mbox;
+
+import java.io.*;
+
+public class UNIXFolder extends UNIXFile implements MailFile {
+    protected transient RandomAccessFile file;
+
+    private static final long serialVersionUID = -254578891263785591L;
+
+    public UNIXFolder(String name) {
+       super(name);
+    }
+
+    public boolean lock(String mode) {
+       try {
+           file = new RandomAccessFile(this, mode);
+           switch (lockType) {
+           case NONE:
+               return true;
+           case NATIVE:
+           default:
+               return UNIXFile.lock(file.getFD(), mode);
+           case JAVA:
+               return file.getChannel().
+                   tryLock(0L, Long.MAX_VALUE, !mode.equals("rw")) != null;
+           }
+       } catch (FileNotFoundException fe) {
+           return false;
+       } catch (IOException ie) {
+           file = null;
+           return false;
+       }
+    }
+
+    public void unlock() { 
+       if (file != null) {
+           try {
+               file.close();
+           } catch (IOException e) {
+               // ignore it
+           }
+           file = null;
+       }
+    }
+
+    public void touchlock() {
+    }
+
+    public FileDescriptor getFD() {
+       if (file == null)
+           return null;
+       try {
+           return file.getFD();
+       } catch (IOException e) {
+           return null;
+       }
+    }
+}