/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.server.http;
import com.caucho.vfs.WriteStream;
import javax.servlet.ServletOutputStream;
import java.io.IOException;
import java.io.OutputStream;
/**
* Implementation of the ServletOutputStream.
*/
public class ServletOutputStreamImpl extends ServletOutputStream {
private OutputStream _out;
private byte []_buffer;
public ServletOutputStreamImpl()
{
}
/**
* Initialize with the current response stream.
*/
public void init(OutputStream out)
{
_out = out;
}
/**
* Writes a byte to the output stream.
*/
public final void write(int b) throws IOException
{
_out.write(b);
}
/**
* Writes a byte buffer to the output stream.
*/
public final void write(byte []buf, int offset, int len) throws IOException
{
_out.write(buf, offset, len);
}
/**
* Prints a string to the stream. Note, this method does not properly
* handle character encoding.
*
* @param s the string to write.
*/
@Override
public void print(String s) throws IOException
{
if (s == null)
s = "null";
OutputStream out = _out;
if (out instanceof WriteStream) {
WriteStream wOut = (WriteStream) out;
wOut.print(s);
}
else {
int length = s.length();
if (_buffer == null)
_buffer = new byte[128];
byte []buffer = _buffer;
// server/0810
int offset = 0;
while (length > 0) {
int sublen = buffer.length;
if (length < sublen)
sublen = length;
for (int i = 0; i < sublen; i++) {
buffer[i] = (byte) s.charAt(i + offset);
}
out.write(buffer, 0, sublen);
length -= sublen;
offset += sublen;
}
}
}
public final void flush() throws IOException
{
_out.flush();
}
public final void close() throws IOException
{
}
public String toString()
{
return getClass().getSimpleName() + "[" + _out + "]";
}
}