org.eclipse.jetty.server.HttpWriter Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jetty-server Show documentation

The core jetty server artifact.

There is a newer version: 12.0.13

//
// ========================================================================
// Copyright (c) 1995-2022 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//

package org.eclipse.jetty.server;

import java.io.IOException;
import java.io.Writer;

import org.eclipse.jetty.util.ByteArrayOutputStream2;
import org.eclipse.jetty.util.Callback;

/**
 *
 */
public abstract class HttpWriter extends Writer
{
    public static final int MAX_OUTPUT_CHARS = 512; // TODO should this be configurable? super size is 1024

    final HttpOutput _out;
    final ByteArrayOutputStream2 _bytes;
    final char[] _chars;

    public HttpWriter(HttpOutput out)
    {
        _out = out;
        _chars = new char[MAX_OUTPUT_CHARS];
        _bytes = new ByteArrayOutputStream2(MAX_OUTPUT_CHARS);  // TODO should this be pooled - or do we just recycle the writer?
    }

    @Override
    public void close() throws IOException
    {
        _out.close();
    }

    public void complete(Callback callback)
    {
        _out.complete(callback);
    }

    @Override
    public void flush() throws IOException
    {
        _out.flush();
    }

    @Override
    public void write(String s, int offset, int length) throws IOException
    {
        while (length > MAX_OUTPUT_CHARS)
        {
            write(s, offset, MAX_OUTPUT_CHARS);
            offset += MAX_OUTPUT_CHARS;
            length -= MAX_OUTPUT_CHARS;
        }

        s.getChars(offset, offset + length, _chars, 0);
        write(_chars, 0, length);
    }

    @Override
    public void write(char[] s, int offset, int length) throws IOException
    {
        throw new AbstractMethodError();
    }
}