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// 
// ========================================================================
// Copyright (c) 1995-2022 Mort Bay Consulting Pty Ltd and others.
// ------------------------------------------------------------------------
// 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.util;

/**
 *  UTF-8 StringBuffer.
 *
 *  This class wraps a standard {@link java.lang.StringBuffer} and provides methods to append
 *  UTF-8 encoded bytes, that are converted into characters.
 *
 *  This class is stateful and up to 4 calls to {@link #append(byte)} may be needed before
 *  state a character is appended to the string buffer.
 *
 *  The UTF-8 decoding is done by this class and no additional buffers or Readers are used.
 *  The UTF-8 code was inspired by http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
 *
 * @deprecated The Eclipse Jetty and Apache Felix Http Jetty packages are no longer supported.
 */
@Deprecated(since = "2021-05-27")
public class Utf8StringBuffer extends Utf8Appendable {

    final StringBuffer _buffer;

    public Utf8StringBuffer() {
        super(new StringBuffer());
        _buffer = (StringBuffer) _appendable;
    }

    public Utf8StringBuffer(int capacity) {
        super(new StringBuffer(capacity));
        _buffer = (StringBuffer) _appendable;
    }

    @Override
    public int length() {
        return _buffer.length();
    }

    @Override
    public void reset() {
        super.reset();
        _buffer.setLength(0);
    }

    @Override
    public String getPartialString() {
        return _buffer.toString();
    }

    public StringBuffer getStringBuffer() {
        checkState();
        return _buffer;
    }

    @Override
    public String toString() {
        checkState();
        return _buffer.toString();
    }
}