0N/A/*
2362N/A * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
0N/A *
0N/A * Redistribution and use in source and binary forms, with or without
0N/A * modification, are permitted provided that the following conditions
0N/A * are met:
0N/A *
0N/A * - Redistributions of source code must retain the above copyright
0N/A * notice, this list of conditions and the following disclaimer.
0N/A *
0N/A * - Redistributions in binary form must reproduce the above copyright
0N/A * notice, this list of conditions and the following disclaimer in the
0N/A * documentation and/or other materials provided with the distribution.
0N/A *
2362N/A * - Neither the name of Oracle nor the names of its
0N/A * contributors may be used to endorse or promote products derived
0N/A * from this software without specific prior written permission.
0N/A *
0N/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
0N/A * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
0N/A * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
0N/A * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
0N/A * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
0N/A * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
0N/A * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
0N/A * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
0N/A * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
0N/A * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
0N/A * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0N/A */
0N/A
4378N/A/*
4378N/A * This source code is provided to illustrate the usage of a given feature
4378N/A * or technique and has been deliberately simplified. Additional steps
4378N/A * required for a production-quality application, such as security checks,
4378N/A * input validation and proper error handling, might not be present in
4378N/A * this sample code.
4378N/A */
4378N/A
4378N/A
0N/Aimport java.io.*;
0N/Aimport java.net.*;
0N/Aimport java.nio.channels.*;
0N/Aimport java.nio.charset.*;
0N/A
0N/A/**
0N/A * A Content type that provides for transferring files.
0N/A *
0N/A * @author Mark Reinhold
0N/A * @author Brad R. Wetmore
0N/A */
0N/Aclass FileContent implements Content {
0N/A
0N/A private static File ROOT = new File("root");
0N/A
0N/A private File fn;
0N/A
0N/A FileContent(URI uri) {
0N/A fn = new File(ROOT,
0N/A uri.getPath()
0N/A .replace('/',
0N/A File.separatorChar));
0N/A }
0N/A
0N/A private String type = null;
0N/A
0N/A public String type() {
0N/A if (type != null)
0N/A return type;
0N/A String nm = fn.getName();
0N/A if (nm.endsWith(".html"))
0N/A type = "text/html; charset=iso-8859-1";
0N/A else if ((nm.indexOf('.') < 0) || nm.endsWith(".txt"))
0N/A type = "text/plain; charset=iso-8859-1";
0N/A else
0N/A type = "application/octet-stream";
0N/A return type;
0N/A }
0N/A
0N/A private FileChannel fc = null;
0N/A private long length = -1;
0N/A private long position = -1; // NB only; >= 0 if transferring
0N/A
0N/A public long length() {
0N/A return length;
0N/A }
0N/A
0N/A public void prepare() throws IOException {
0N/A if (fc == null)
0N/A fc = new RandomAccessFile(fn, "r").getChannel();
0N/A length = fc.size();
0N/A position = 0; // NB only
0N/A }
0N/A
0N/A public boolean send(ChannelIO cio) throws IOException {
0N/A if (fc == null)
0N/A throw new IllegalStateException();
0N/A if (position < 0) // NB only
0N/A throw new IllegalStateException();
0N/A
0N/A /*
0N/A * Short-circuit if we're already done.
0N/A */
0N/A if (position >= length) {
0N/A return false;
0N/A }
0N/A
0N/A position += cio.transferTo(fc, position, length - position);
0N/A return (position < length);
0N/A }
0N/A
0N/A public void release() throws IOException {
0N/A if (fc != null) {
0N/A fc.close();
0N/A fc = null;
0N/A }
0N/A }
0N/A}