writerfilter/source/ooxml/OOXMLBinaryObjectReference.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #include "OOXMLBinaryObjectReference.hxx"
  20 #include <string.h>
  21
  22 #include <utility>
  23
  24 namespace writerfilter::ooxml
  25 {
  26
  27 using namespace ::com::sun::star;
  28
  29 OOXMLBinaryObjectReference::OOXMLBinaryObjectReference
  30 (OOXMLStream::Pointer_t pStream)
  31 : mpStream(std::move(pStream)), mbRead(false)
  32 {
  33 }
  34
  35 OOXMLBinaryObjectReference::~OOXMLBinaryObjectReference()
  36 {
  37 }
  38
  39 void OOXMLBinaryObjectReference::read()
  40 {
  41     sal_uInt32 nMaxReadBytes = 1024*1024;
  42     uno::Sequence<sal_Int8> aSeq(nMaxReadBytes);
  43     uno::Reference<io::XInputStream> xInputStream =
  44         mpStream->getDocumentStream();
  45
  46     sal_uInt32 nSize = 0;
  47     sal_uInt32 nOldSize = 0;
  48     sal_uInt32 nBytesRead = 0;
  49
  50     while ((nBytesRead = xInputStream->readSomeBytes(aSeq, nMaxReadBytes)) > 0)
  51     {
  52         nOldSize = nSize;
  53         nSize += nBytesRead;
  54         mSequence.resize(nSize);
  55
  56         memcpy(&mSequence[nOldSize], aSeq.getArray(), nBytesRead);
  57     }
  58
  59     mbRead = true;
  60 }
  61
  62 void OOXMLBinaryObjectReference::resolve(BinaryObj & rHandler)
  63 {
  64     if (! mbRead)
  65         read();
  66
  67     rHandler.data(reinterpret_cast<sal_uInt8 *>(mSequence.data()),
  68                   mSequence.size());
  69 }
  70
  71 }
  72
  73 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */