lotuswordpro/source/filter/lwpobjid.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*************************************************************************
   3  *
   4  *  The Contents of this file are made available subject to the terms of
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   7  *         - GNU Lesser General Public License Version 2.1
   8  *         - Sun Industry Standards Source License Version 1.1
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  10  *  Sun Microsystems Inc., October, 2000
  11  *
  12  *  GNU Lesser General Public License Version 2.1
  13  *  =============================================
  14  *  Copyright 2000 by Sun Microsystems, Inc.
  15  *  901 San Antonio Road, Palo Alto, CA 94303, USA
  16  *
  17  *  This library is free software; you can redistribute it and/or
  18  *  modify it under the terms of the GNU Lesser General Public
  19  *  License version 2.1, as published by the Free Software Foundation.
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  21  *  This library is distributed in the hope that it will be useful,
  22  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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  24  *  Lesser General Public License for more details.
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  31  *
  32  *  Sun Industry Standards Source License Version 1.1
  33  *  =================================================
  34  *  The contents of this file are subject to the Sun Industry Standards
  35  *  Source License Version 1.1 (the "License"); You may not use this file
  36  *  except in compliance with the License. You may obtain a copy of the
  37  *  License at http://www.openoffice.org/license.html.
  38  *
  39  *  Software provided under this License is provided on an "AS IS" basis,
  40  *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
  41  *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
  42  *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
  43  *  See the License for the specific provisions governing your rights and
  44  *  obligations concerning the Software.
  45  *
  46  *  The Initial Developer of the Original Code is: IBM Corporation
  47  *
  48  *  Copyright: 2008 by IBM Corporation
  49  *
  50  *  All Rights Reserved.
  51  *
  52  *  Contributor(s): _______________________________________
  53  *
  54  *
  55  ************************************************************************/
  56 /*************************************************************************
  57  * @file
  58  *  For LWP filter architecture prototype
  59  ************************************************************************/
  60
  61 #include <lwpobjid.hxx>
  62 #include <lwpfilehdr.hxx>
  63 #include <lwpobjfactory.hxx>
  64 #include <lwpglobalmgr.hxx>
  65
  66 LwpObjectID::LwpObjectID()
  67     : m_nLow(0)
  68     , m_nHigh(0)
  69     , m_nIndex(0)
  70     , m_bIsCompressed(false)
  71 {
  72 }
  73 /**
  74  * @descr       Read object id with format: low(4bytes)+high(2bytes) from stream
  75  *          for LWP7 record
  76 */
  77 void LwpObjectID::Read(LwpSvStream* pStrm)
  78 {
  79     pStrm->ReadUInt32(m_nLow);
  80     pStrm->ReadUInt16(m_nHigh);
  81 }
  82 /**
  83  * @descr       Read object id with format: low(4bytes)+high(2bytes) from object stream
  84 */
  85 sal_uInt32 LwpObjectID::Read(LwpObjectStream* pObj)
  86 {
  87     m_nLow = pObj->QuickReaduInt32();
  88     m_nHigh = pObj->QuickReaduInt16();
  89     return DiskSize();
  90 }
  91 /**
  92  * @descr       Read object id with indexed format from stream
  93  *          if index>0, lowid is get from time table per the index
  94 *           else    index+lowid+highid
  95 */
  96 void LwpObjectID::ReadIndexed(LwpSvStream* pStrm)
  97 {
  98     //note the m_nLow store the index instead of time from the timetable as in LWP
  99     m_bIsCompressed = false;
 100     if (LwpFileHeader::m_nFileRevision < 0x000B)
 101     {
 102         Read(pStrm);
 103         return;
 104     }
 105
 106     pStrm->ReadUInt8(m_nIndex);
 107
 108     if (m_nIndex)
 109     {
 110         m_bIsCompressed = true;
 111         //m_nLow = index;       //note the m_nLow stores the index instead of the actual time id
 112         LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
 113         LwpObjectFactory* pFactory = pGlobal->GetLwpObjFactory();
 114         LwpIndexManager& rIdxMgr = pFactory->GetIndexManager();
 115         m_nLow = rIdxMgr.GetObjTime(static_cast<sal_uInt16>(m_nIndex));
 116     }
 117     else
 118     {
 119         pStrm->ReadUInt32(m_nLow);
 120     }
 121     pStrm->ReadUInt16(m_nHigh);
 122     DiskSizeIndexed();
 123 }
 124
 125 /**
 126  * @descr       Read object id with indexed format from object stream
 127  *          if index>0, lowid is get from time table per the index
 128 *           else    index+lowid+highid
 129 */
 130 sal_uInt32 LwpObjectID::ReadIndexed(LwpObjectStream* pStrm)
 131 {
 132     m_bIsCompressed = false;
 133     if (LwpFileHeader::m_nFileRevision < 0x000B)
 134     {
 135         return Read(pStrm);
 136     }
 137
 138     m_nIndex = pStrm->QuickReaduInt8();
 139     if (m_nIndex)
 140     {
 141         m_bIsCompressed = true;
 142         //m_nLow = index;       //note the m_nLow stores the index instead of the actual time id
 143         LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
 144         LwpObjectFactory* pFactory = pGlobal->GetLwpObjFactory();
 145         LwpIndexManager& rIdxMgr = pFactory->GetIndexManager();
 146         m_nLow = rIdxMgr.GetObjTime(static_cast<sal_uInt16>(m_nIndex));
 147     }
 148     else
 149         m_nLow = pStrm->QuickReaduInt32();
 150     m_nHigh = pStrm->QuickReaduInt16();
 151     return DiskSizeIndexed();
 152 }
 153 /**
 154  * @descr       Read object id with compressed format from object stream
 155  *          if diff == 255: 255+lowid+highid
 156  *          else    lowid equals to the lowid of previous low id
 157  *              and high id = the high id of previous id + diff +1
 158 */
 159 void LwpObjectID::ReadCompressed(LwpObjectStream* pObj, LwpObjectID const& prev)
 160 {
 161     sal_uInt8 diff = pObj->QuickReaduInt8();
 162
 163     if (diff == 255)
 164     {
 165         Read(pObj);
 166     }
 167     else
 168     {
 169         m_nLow = prev.GetLow();
 170         m_nHigh = prev.GetHigh() + diff + 1;
 171     }
 172 }
 173 /**
 174  * @descr       return the size of indexed object id
 175 */
 176 sal_uInt32 LwpObjectID::DiskSizeIndexed() const
 177 {
 178     return sizeof(sal_uInt8) + ((m_nIndex != 0) ? 0 : sizeof(m_nLow)) + sizeof(m_nHigh);
 179 }
 180 /**
 181  * @descr       get object from object factory per the object id
 182 */
 183 rtl::Reference<LwpObject> LwpObjectID::obj(VO_TYPE tag) const
 184 {
 185     if (IsNull())
 186     {
 187         return nullptr;
 188     }
 189     LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
 190     LwpObjectFactory* pObjMgr = pGlobal->GetLwpObjFactory();
 191     rtl::Reference<LwpObject> pObj = pObjMgr->QueryObject(*this);
 192     if (tag != VO_INVALID && (pObj.is()))
 193     {
 194         if (static_cast<sal_uInt32>(tag) != pObj->GetTag())
 195         {
 196             pObj.clear();
 197         }
 198     }
 199     return pObj;
 200 }
 201
 202 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */