/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   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 .

 */

#include <string.h>

#include <cppuhelper/implbase.hxx>

#include <xmlscript/xml_helper.hxx>

#include <com/sun/star/io/XInputStream.hpp>

#include <com/sun/star/io/XOutputStream.hpp>

using namespace com::sun::star;

using namespace com::sun::star::uno;

namespace xmlscript

{

namespace {

class BSeqInputStream

    : public ::cppu::WeakImplHelper< io::XInputStream >

{

    std::vector<sal_Int8> _seq;

    sal_Int32 _nPos;

public:

    explicit BSeqInputStream( std::vector<sal_Int8>&& rSeq )

        : _seq( std::move(rSeq) )

        , _nPos( 0 )

        {}

    // XInputStream

    virtual sal_Int32 SAL_CALL readBytes(

        Sequence< sal_Int8 > & rData, sal_Int32 nBytesToRead ) override;

    virtual sal_Int32 SAL_CALL readSomeBytes(

        Sequence< sal_Int8 > & rData, sal_Int32 nMaxBytesToRead ) override;

    virtual void SAL_CALL skipBytes(

        sal_Int32 nBytesToSkip ) override;

    virtual sal_Int32 SAL_CALL available() override;

    virtual void SAL_CALL closeInput() override;

};

}

sal_Int32 BSeqInputStream::readBytes(

    Sequence< sal_Int8 > & rData, sal_Int32 nBytesToRead )

{

    nBytesToRead = ((nBytesToRead > static_cast<sal_Int32>(_seq.size()) - _nPos)

                    ? _seq.size() - _nPos

                    : nBytesToRead);

    if (rData.getLength() != nBytesToRead)

        rData.realloc( nBytesToRead );

    if (nBytesToRead != 0) {

        memcpy(rData.getArray(), &_seq[_nPos], nBytesToRead);

    }

    _nPos += nBytesToRead;

    return nBytesToRead;

}

sal_Int32 BSeqInputStream::readSomeBytes(

    Sequence< sal_Int8 > & rData, sal_Int32 nMaxBytesToRead )

{

    return readBytes( rData, nMaxBytesToRead );

}

void BSeqInputStream::skipBytes(

    sal_Int32 /*nBytesToSkip*/ )

{

}

sal_Int32 BSeqInputStream::available()

{

    return _seq.size() - _nPos;

}

void BSeqInputStream::closeInput()

{

}

namespace {

class BSeqOutputStream

    : public ::cppu::WeakImplHelper< io::XOutputStream >

{

    std::vector<sal_Int8> * _seq;

public:

    explicit BSeqOutputStream( std::vector<sal_Int8> * seq )

        : _seq( seq )

        {}

    // XOutputStream

    virtual void SAL_CALL writeBytes(

        Sequence< sal_Int8 > const & rData ) override;

    virtual void SAL_CALL flush() override;

    virtual void SAL_CALL closeOutput() override;

};

}

void BSeqOutputStream::writeBytes( Sequence< sal_Int8 > const & rData )

{

    sal_Int32 nPos = _seq->size();

    _seq->resize( nPos + rData.getLength() );

    if (rData.getLength() != 0) {

        std::copy(rData.getConstArray(),

                  rData.getConstArray() + rData.getLength(),

                  _seq->begin() + nPos);

    }

}

void BSeqOutputStream::flush()

{

}

void BSeqOutputStream::closeOutput()

{

}

Reference< io::XInputStream > createInputStream( std::vector<sal_Int8>&& rInData )

{

    return new BSeqInputStream( std::move(rInData) );

}

Reference< io::XInputStream > createInputStream( const sal_Int8* pData, int len )

{

    std::vector<sal_Int8> rInData(len);

    if (len != 0) {

        memcpy( rInData.data(), pData, len);

    }

    return new BSeqInputStream( std::move(rInData) );

}

Reference< io::XOutputStream > createOutputStream( std::vector<sal_Int8> * pOutData )

{

    return new BSeqOutputStream( pOutData );

}

}

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