283aa103b9
and cid#1545179 COPY_INSTEAD_OF_MOVE cid#1545187 COPY_INSTEAD_OF_MOVE cid#1545188 COPY_INSTEAD_OF_MOVE cid#1545189 COPY_INSTEAD_OF_MOVE cid#1545196 COPY_INSTEAD_OF_MOVE cid#1545197 COPY_INSTEAD_OF_MOVE cid#1545204 COPY_INSTEAD_OF_MOVE cid#1545223 COPY_INSTEAD_OF_MOVE cid#1545236 COPY_INSTEAD_OF_MOVE cid#1545239 COPY_INSTEAD_OF_MOVE cid#1545253 COPY_INSTEAD_OF_MOVE cid#1545274 COPY_INSTEAD_OF_MOVE cid#1545286 COPY_INSTEAD_OF_MOVE cid#1545309 COPY_INSTEAD_OF_MOVE cid#1545311 COPY_INSTEAD_OF_MOVE cid#1545345 COPY_INSTEAD_OF_MOVE cid#1545358 COPY_INSTEAD_OF_MOVE cid#1545361 COPY_INSTEAD_OF_MOVE cid#1545365 COPY_INSTEAD_OF_MOVE cid#1545367 COPY_INSTEAD_OF_MOVE cid#1545372 COPY_INSTEAD_OF_MOVE cid#1545373 COPY_INSTEAD_OF_MOVE cid#1545377 COPY_INSTEAD_OF_MOVE cid#1545392 COPY_INSTEAD_OF_MOVE cid#1545399 COPY_INSTEAD_OF_MOVE cid#1545404 COPY_INSTEAD_OF_MOVE cid#1545408 COPY_INSTEAD_OF_MOVE cid#1545430 COPY_INSTEAD_OF_MOVE cid#1545439 COPY_INSTEAD_OF_MOVE cid#1545449 COPY_INSTEAD_OF_MOVE Change-Id: I3afe836a0bbc8bd70937035e60eb020435e413d2 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/160539 Tested-by: Jenkins Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
118 lines
3.4 KiB
C++
118 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#ifndef INCLUDED_SAX_SOURCE_TOOLS_CACHEDOUTPUTSTREAM_HXX
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#define INCLUDED_SAX_SOURCE_TOOLS_CACHEDOUTPUTSTREAM_HXX
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#include <sal/types.h>
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#include <com/sun/star/io/XOutputStream.hpp>
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#include <com/sun/star/uno/Sequence.hxx>
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#include <cstring>
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#include <memory>
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namespace sax_fastparser {
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class ForMergeBase
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{
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public:
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virtual ~ForMergeBase() {}
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virtual void append( const css::uno::Sequence<sal_Int8>& rWhat ) = 0;
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};
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class CachedOutputStream
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{
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/// When buffer hits this size, it's written to mxOutputStream
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static const sal_Int32 mnMaximumSize = 0x100000; // 1Mbyte
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/// ForMerge structure is used for sorting elements in Writer
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std::shared_ptr< ForMergeBase > mpForMerge;
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const css::uno::Sequence<sal_Int8> mpCache;
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/// Output stream, usually writing data into files.
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css::uno::Reference< css::io::XOutputStream > mxOutputStream;
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uno_Sequence *pSeq;
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sal_Int32 mnCacheWrittenSize;
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bool mbWriteToOutStream;
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public:
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CachedOutputStream() : mpCache(mnMaximumSize)
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, pSeq(mpCache.get())
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, mnCacheWrittenSize(0)
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, mbWriteToOutStream(true)
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{}
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const css::uno::Reference< css::io::XOutputStream >& getOutputStream() const
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{
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return mxOutputStream;
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}
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void setOutputStream( const css::uno::Reference< css::io::XOutputStream >& xOutputStream )
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{
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mxOutputStream = xOutputStream;
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}
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void setOutput(const std::shared_ptr<ForMergeBase>& pForMerge)
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{
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flush();
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mbWriteToOutStream = false;
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mpForMerge = pForMerge;
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}
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void resetOutputToStream()
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{
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flush();
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mbWriteToOutStream = true;
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mpForMerge.reset();
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}
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/// cache string and if limit is hit, flush
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void writeBytes( const sal_Int8* pStr, sal_Int32 nLen )
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{
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// Write when the buffer gets big enough
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if (mnCacheWrittenSize + nLen > mnMaximumSize)
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{
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flush();
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// Writer does some elements sorting, so it can accumulate
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// pretty big strings in FastSaxSerializer::ForMerge.
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// In that case, just flush data and write immediately.
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if (nLen > mnMaximumSize)
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{
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if (mbWriteToOutStream)
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mxOutputStream->writeBytes( css::uno::Sequence<sal_Int8>(pStr, nLen) );
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else
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mpForMerge->append( css::uno::Sequence<sal_Int8>(pStr, nLen) );
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return;
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}
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}
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memcpy(pSeq->elements + mnCacheWrittenSize, pStr, nLen);
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mnCacheWrittenSize += nLen;
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}
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/// immediately write buffer into mxOutputStream and clear
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void flush()
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{
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// resize the Sequence to written size
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pSeq->nElements = mnCacheWrittenSize;
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if (mbWriteToOutStream)
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mxOutputStream->writeBytes( mpCache );
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else
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mpForMerge->append( mpCache );
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// and next time write to the beginning
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mnCacheWrittenSize = 0;
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}
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};
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}
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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