ByteArrayOutputStream.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_BYTEARRAYOUTPUTSTREAM_H_
#define _DECAF_IO_BYTEARRAYOUTPUTSTREAM_H_

#include <decaf/util/Config.h>

#include <decaf/io/OutputStream.h>
#include <decaf/lang/exceptions/IllegalArgumentException.h>

#include <utility>

namespace decaf{
namespace io{

    class DECAF_API ByteArrayOutputStream: public OutputStream {
    private:

        unsigned char* buffer;

        int bufferSize;

        int count;

    private:

        ByteArrayOutputStream(const ByteArrayOutputStream&);
        ByteArrayOutputStream& operator=(const ByteArrayOutputStream&);

    public:

        ByteArrayOutputStream();

        ByteArrayOutputStream(int bufferSize);

        virtual ~ByteArrayOutputStream();

        std::pair<unsigned char*, int> toByteArray() const;

        long long size() const;

        virtual void reset();

        virtual std::string toString() const;

        void writeTo(OutputStream* out) const;

    protected:

        virtual void doWriteByte(unsigned char value);

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

    private:

        // Expands the buffer if there's not enough room for the needed length.
        void checkExpandSize(int needed);

    };

}}

#endif /*_DECAF_IO_BYTEARRAYOUTPUTSTREAM_H_*/