| // |
| // ======================================================================== |
| // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.server; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| |
| import javax.servlet.ServletOutputStream; |
| |
| import org.eclipse.jetty.http.AbstractGenerator; |
| import org.eclipse.jetty.http.Generator; |
| import org.eclipse.jetty.io.Buffer; |
| import org.eclipse.jetty.io.ByteArrayBuffer; |
| import org.eclipse.jetty.io.EofException; |
| import org.eclipse.jetty.util.ByteArrayOutputStream2; |
| |
| /** Output. |
| * |
| * <p> |
| * Implements {@link javax.servlet.ServletOutputStream} from the <code>javax.servlet</code> package. |
| * </p> |
| * A {@link ServletOutputStream} implementation that writes content |
| * to a {@link AbstractGenerator}. The class is designed to be reused |
| * and can be reopened after a close. |
| */ |
| public class HttpOutput extends ServletOutputStream |
| { |
| protected final AbstractHttpConnection _connection; |
| protected final AbstractGenerator _generator; |
| private boolean _closed; |
| private ByteArrayBuffer _onebyte; |
| |
| // These are held here for reuse by Writer |
| String _characterEncoding; |
| Writer _converter; |
| char[] _chars; |
| ByteArrayOutputStream2 _bytes; |
| |
| /* ------------------------------------------------------------ */ |
| public HttpOutput(AbstractHttpConnection connection) |
| { |
| _connection=connection; |
| _generator=(AbstractGenerator)connection.getGenerator(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public int getMaxIdleTime() |
| { |
| return _connection.getMaxIdleTime(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isWritten() |
| { |
| return _generator.getContentWritten()>0; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /* |
| * @see java.io.OutputStream#close() |
| */ |
| @Override |
| public void close() throws IOException |
| { |
| _closed=true; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isClosed() |
| { |
| return _closed; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void reopen() |
| { |
| _closed=false; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void flush() throws IOException |
| { |
| _generator.flush(getMaxIdleTime()); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void write(byte[] b, int off, int len) throws IOException |
| { |
| write(new ByteArrayBuffer(b,off,len)); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /* |
| * @see java.io.OutputStream#write(byte[]) |
| */ |
| @Override |
| public void write(byte[] b) throws IOException |
| { |
| write(new ByteArrayBuffer(b)); |
| } |
| |
| |
| /* ------------------------------------------------------------ */ |
| /* |
| * @see java.io.OutputStream#write(int) |
| */ |
| @Override |
| public void write(int b) throws IOException |
| { |
| if (_onebyte==null) |
| _onebyte=new ByteArrayBuffer(1); |
| else |
| _onebyte.clear(); |
| _onebyte.put((byte)b); |
| write(_onebyte); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| private void write(Buffer buffer) throws IOException |
| { |
| if (_closed) |
| throw new IOException("Closed"); |
| if (!_generator.isOpen()) |
| throw new EofException(); |
| |
| // Block until we can add _content. |
| while (_generator.isBufferFull()) |
| { |
| _generator.blockForOutput(getMaxIdleTime()); |
| if (_closed) |
| throw new IOException("Closed"); |
| if (!_generator.isOpen()) |
| throw new EofException(); |
| } |
| |
| // Add the _content |
| _generator.addContent(buffer, Generator.MORE); |
| |
| // Have to flush and complete headers? |
| |
| if (_generator.isAllContentWritten()) |
| { |
| flush(); |
| close(); |
| } |
| else if (_generator.isBufferFull()) |
| _connection.commitResponse(Generator.MORE); |
| |
| // Block until our buffer is free |
| while (buffer.length() > 0 && _generator.isOpen()) |
| { |
| _generator.blockForOutput(getMaxIdleTime()); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /* |
| * @see javax.servlet.ServletOutputStream#print(java.lang.String) |
| */ |
| @Override |
| public void print(String s) throws IOException |
| { |
| write(s.getBytes()); |
| } |
| } |