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/* -*- 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/.
*
*/
#include <vcl/BinaryDataContainer.hxx>
#include <o3tl/hash_combine.hxx>
BinaryDataContainer::BinaryDataContainer(SvStream& stream, size_t size)
{
auto pBuffer = std::make_shared<std::vector<sal_uInt8>>(size);
if (stream.ReadBytes(pBuffer->data(), pBuffer->size()) == size)
mpData = std::move(pBuffer);
}
size_t BinaryDataContainer::calculateHash() const
{
size_t nSeed = 0;
if (mpData)
{
o3tl::hash_combine(nSeed, getSize());
for (sal_uInt8 const& rByte : *mpData)
o3tl::hash_combine(nSeed, rByte);
}
return nSeed;
}
css::uno::Sequence<sal_Int8> BinaryDataContainer::getCopyAsByteSequence() const
{
if (isEmpty())
return css::uno::Sequence<sal_Int8>();
css::uno::Sequence<sal_Int8> aData(getSize());
std::copy(mpData->cbegin(), mpData->cend(), aData.getArray());
return aData;
}
namespace
{
/*
* Hold a reference on the internal state in case we swap out
* and free the vector while someone holds an SvStream pointer.
*/
class ReferencedMemoryStream : public SvMemoryStream
{
std::shared_ptr<std::vector<sal_uInt8>> mpData;
public:
ReferencedMemoryStream(const std::shared_ptr<std::vector<sal_uInt8>>& rData)
: SvMemoryStream(rData ? rData->data() : nullptr, rData ? rData->size() : 0,
StreamMode::READ)
, mpData(rData)
{
}
};
}
std::shared_ptr<SvStream> BinaryDataContainer::getAsStream()
{
return std::make_shared<ReferencedMemoryStream>(mpData);
}
std::size_t BinaryDataContainer::writeToStream(SvStream& rStream) const
{
return rStream.WriteBytes(getData(), getSize());
}
size_t BinaryDataContainer::getSize() const { return mpData ? mpData->size() : 0; }
size_t BinaryDataContainer::getSizeBytes() const { return getSize(); }
bool BinaryDataContainer::isEmpty() const { return !mpData || mpData->empty(); }
const sal_uInt8* BinaryDataContainer::getData() const { return mpData ? mpData->data() : nullptr; }
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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