FilterOutputStream.h

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _DECAF_IO_FILTEROUTPUTSTREAM_H_
#define _DECAF_IO_FILTEROUTPUTSTREAM_H_

#include <decaf/io/OutputStream.h>
#include <decaf/io/IOException.h>
#include <decaf/lang/exceptions/NullPointerException.h>
#include <decaf/lang/exceptions/IndexOutOfBoundsException.h>

namespace decaf{
namespace io{

    class DECAF_API FilterOutputStream: public OutputStream {
    protected:

        // The output Stream to wrap
        OutputStream* outputStream;

        // Indicates if we own the wrapped stream
        bool own;

        // Indicates that this stream was closed
        volatile bool closed;

    private:

        FilterOutputStream(const FilterOutputStream&);
        FilterOutputStream& operator=(const FilterOutputStream&);

    public:

        FilterOutputStream(OutputStream* outputStream, bool own = false);

        virtual ~FilterOutputStream();

        virtual void flush();

        virtual void close();

        virtual std::string toString() const;

    protected:

        virtual void doWriteByte(unsigned char value);

        virtual void doWriteArray(const unsigned char* buffer, int size);

        virtual void doWriteArrayBounded(const unsigned char* buffer, int size, int offset, int length);

    protected:

        virtual bool isClosed() const;

    };

}}

#endif /*_DECAF_IO_FILTEROUTPUTSTREAM_H_*/