/* -*- 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_PACKAGE_SOURCE_ZIPAPI_XUNBUFFEREDSTREAM_HXX

#define INCLUDED_PACKAGE_SOURCE_ZIPAPI_XUNBUFFEREDSTREAM_HXX

#include <optional>

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

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

#include <com/sun/star/xml/crypto/XCipherContext.hpp>

#include <comphelper/refcountedmutex.hxx>

#include <cppuhelper/implbase.hxx>

#include <rtl/ref.hxx>

#include <package/Inflater.hxx>

#include <memory>

#include <ZipEntry.hxx>

#include <CRC32.hxx>

namespace com::sun::star::uno {

    class XComponentContext;

}

#define UNBUFF_STREAM_DATA          0

#define UNBUFF_STREAM_RAW           1

#define UNBUFF_STREAM_WRAPPEDRAW    2

class EncryptionData;

class XUnbufferedStream final : public cppu::WeakImplHelper

<

    css::io::XInputStream

>

{

    rtl::Reference<comphelper::RefCountedMutex> maMutexHolder;

    css::uno::Reference < css::io::XInputStream > mxZipStream;

    css::uno::Reference < css::io::XSeekable > mxZipSeek;

    css::uno::Sequence < sal_Int8 > maCompBuffer, maHeader;

    ZipEntry maEntry;

    sal_Int32 mnBlockSize;

    css::uno::Reference< css::xml::crypto::XCipherContext > m_xCipherContext;

    std::unique_ptr<ZipUtils::Inflater> maInflater;

    bool mbRawStream, mbWrappedRaw;

    sal_Int16 mnHeaderToRead;

    sal_Int64 mnZipCurrent, mnZipEnd, mnZipSize, mnMyCurrent;

    CRC32 maCRC;

    bool mbCheckCRC;

public:

    XUnbufferedStream(

                 const css::uno::Reference< css::uno::XComponentContext >& xContext,

                 rtl::Reference<comphelper::RefCountedMutex> aMutexHolder,

                 ZipEntry const & rEntry,

                 css::uno::Reference < css::io::XInputStream > const & xNewZipStream,

                 const ::rtl::Reference< EncryptionData >& rData,

                 sal_Int8 nStreamMode,

                 ::std::optional<sal_Int64> oDecryptedSize,

                 const OUString& aMediaType,

                 bool bRecoveryMode );

    // allows to read package raw stream

    XUnbufferedStream(

                 rtl::Reference<comphelper::RefCountedMutex> aMutexHolder,

                 const css::uno::Reference < css::io::XInputStream >& xRawStream,

                 const ::rtl::Reference< EncryptionData >& rData );

    sal_Int64 getSize() const { return mnZipSize; }

    virtual ~XUnbufferedStream() override;

    // XInputStream

    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;

};

#endif

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