/* -*- 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 .
 */

#ifndef INCLUDED_UCBHELPER_FD_INPUTSTREAM_HXX
#define INCLUDED_UCBHELPER_FD_INPUTSTREAM_HXX

#include <osl/file.h>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XSeekable.hpp>
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/basemutex.hxx>

#include <ucbhelper/ucbhelperdllapi.h>

namespace ucbhelper
{
    typedef cppu::WeakImplHelper<
        css::io::XInputStream,
        css::io::XSeekable > FdInputStream_Base;

    /** Implements a seekable InputStream
     *  working on a buffer.
     */
    class UCBHELPER_DLLPUBLIC FdInputStream final
        : protected cppu::BaseMutex,
          public FdInputStream_Base
    {
    public:

        /** Defines the storage kind found
         *  on which the inputstream acts.
         */
        FdInputStream(oslFileHandle tmpfl);

        virtual ~FdInputStream() override;

        virtual sal_Int32 SAL_CALL
        readBytes(css::uno::Sequence< sal_Int8 >& aData,
                  sal_Int32 nBytesToRead) override;

        virtual sal_Int32 SAL_CALL
        readSomeBytes(css::uno::Sequence< sal_Int8 >& aData,
                      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;


        /** XSeekable
         */

        virtual void SAL_CALL
        seek(sal_Int64 location) override;


        virtual sal_Int64 SAL_CALL
        getPosition() override;


        virtual sal_Int64 SAL_CALL
        getLength() override;

    private:
        oslFileHandle m_tmpfl;
        sal_uInt64 m_nLength;
    };
}

#endif

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