sw/source/filter/ww8/WW8Sttbf.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
  20 #include <sal/config.h>
  21
  22 #include <algorithm>
  23 #include <iostream>
  24 #include "WW8Sttbf.hxx"
  25 #include <osl/endian.h>
  26 #include <o3tl/make_shared.hxx>
  27 #include <o3tl/safeint.hxx>
  28 #include <rtl/ustrbuf.hxx>
  29 #include <tools/stream.hxx>
  30 #include <sal/log.hxx>
  31 #include <osl/diagnose.h>
  32
  33 namespace ww8
  34 {
  35     WW8Struct::WW8Struct(SvStream& rSt, sal_uInt32 nPos, sal_uInt32 nSize)
  36         : mn_offset(0), mn_size(0)
  37     {
  38         if (checkSeek(rSt, nPos))
  39         {
  40             std::size_t nRemainingSize = rSt.remainingSize();
  41             nSize = std::min<sal_uInt32>(nRemainingSize, nSize);
  42             m_pData = o3tl::make_shared_array<sal_uInt8>(nSize);
  43             mn_size = rSt.ReadBytes(m_pData.get(), nSize);
  44         }
  45         OSL_ENSURE(mn_size == nSize, "short read in WW8Struct::WW8Struct");
  46     }
  47
  48     WW8Struct::WW8Struct(WW8Struct const * pStruct, sal_uInt32 nPos, sal_uInt32 nSize)
  49         : m_pData(pStruct->m_pData), mn_offset(pStruct->mn_offset + nPos)
  50         , mn_size(nSize)
  51     {
  52     }
  53
  54     WW8Struct::~WW8Struct()
  55     {
  56     }
  57
  58     sal_uInt8 WW8Struct::getU8(sal_uInt32 nOffset)
  59     {
  60         sal_uInt8 nResult = 0;
  61
  62         if (nOffset < mn_size)
  63         {
  64             nResult = m_pData.get()[mn_offset + nOffset];
  65         }
  66
  67         return nResult;
  68     }
  69
  70     OUString WW8Struct::getUString(sal_uInt32 nOffset,
  71                                           sal_Int32 nCount)
  72     {
  73         OUString aResult;
  74
  75         if (nCount > 0)
  76         {
  77             //clip to available
  78             sal_uInt32 nStartOff = mn_offset + nOffset;
  79             if (nStartOff >= mn_size)
  80                 return aResult;
  81             sal_uInt32 nAvailable = (mn_size - nStartOff)/sizeof(sal_Unicode);
  82             if (o3tl::make_unsigned(nCount) > nAvailable)
  83                 nCount = nAvailable;
  84             OUStringBuffer aBuf(nCount);
  85             for (sal_Int32 i = 0; i < nCount; ++i)
  86                 aBuf.append(static_cast<sal_Unicode>(getU16(nStartOff+i*2)));
  87             aResult = aBuf.makeStringAndClear();
  88         }
  89
  90         SAL_INFO( "sw.ww8.level2", "<WW8Struct-getUString offset=\"" << nOffset
  91             << "\" count=\"" << nCount << "\">" << aResult << "</WW8Struct-getUString>" );
  92
  93         return aResult;
  94
  95     }
  96 }
  97 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */