com.sun.mail.pop3.TempFile Maven / Gradle / Ivy
/*
* Copyright (c) 2010, 2021 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.pop3;
import java.io.*;
/**
* A temporary file used to cache POP3 messages.
*/
class TempFile {
private File file; // the temp file name
private WritableSharedFile sf;
/**
* Create a temp file in the specified directory (if not null).
* The file will be deleted when the JVM exits.
*/
public TempFile(File dir) throws IOException {
file = File.createTempFile("pop3.", ".mbox", dir);
// XXX - need JDK 6 to set permissions on the file to owner-only
file.deleteOnExit();
sf = new WritableSharedFile(file);
}
/**
* Return a stream for appending to the temp file.
*/
public AppendStream getAppendStream() throws IOException {
return sf.getAppendStream();
}
/**
* Close and remove this temp file.
*/
public void close() {
try {
sf.close();
} catch (IOException ex) {
// ignore it
}
file.delete();
}
@Override
protected void finalize() throws Throwable {
try {
close();
} finally {
super.finalize();
}
}
}