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.
  20  *
  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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  26  *  You should have received a copy of the GNU Lesser General Public
  27  *  License along with this library; if not, write to the Free Software
  28  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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  30  *
  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), m_nHigh(0), m_nIndex(0), m_bIsCompressed(false)
  68 {
  69 }
  70 /**
  71  * @descr       Read object id with format: low(4bytes)+high(2bytes) from stream
  72  *          for LWP7 record
  73 */
  74 void LwpObjectID::Read(LwpSvStream *pStrm)
  75 {
  76     pStrm->ReadUInt32( m_nLow );
  77     pStrm->ReadUInt16( m_nHigh );
  78 }
  79 /**
  80  * @descr       Read object id with format: low(4bytes)+high(2bytes) from object stream
  81 */
  82 sal_uInt32 LwpObjectID::Read(LwpObjectStream *pObj)
  83 {
  84     m_nLow = pObj->QuickReaduInt32();
  85     m_nHigh = pObj->QuickReaduInt16();
  86     return DiskSize();
  87 }
  88 /**
  89  * @descr       Read object id with indexed format from stream
  90  *          if index>0, lowid is get from time table per the index
  91 *           else    index+lowid+highid
  92 */
  93 void LwpObjectID::ReadIndexed(LwpSvStream *pStrm)
  94 {
  95 //note the m_nLow store the index instead of time from the timetable as in LWP
  96     m_bIsCompressed = false;
  97     if( LwpFileHeader::m_nFileRevision < 0x000B)
  98     {
  99         Read(pStrm);
 100         return;
 101     }
 102
 103     pStrm->ReadUInt8( m_nIndex );
 104
 105     if (m_nIndex)
 106     {
 107         m_bIsCompressed = true;
 108         //m_nLow = index;       //note the m_nLow stores the index instead of the actual time id
 109         LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
 110         LwpObjectFactory* pFactory = pGlobal->GetLwpObjFactory();
 111         LwpIndexManager& rIdxMgr = pFactory->GetIndexManager();
 112         m_nLow = rIdxMgr.GetObjTime( (sal_uInt16)m_nIndex);
 113     }
 114     else
 115     {
 116         pStrm->ReadUInt32( m_nLow );
 117     }
 118     pStrm->ReadUInt16( m_nHigh );
 119     DiskSizeIndexed();
 120 }
 121
 122 /**
 123  * @descr       Read object id with indexed format from object stream
 124  *          if index>0, lowid is get from time table per the index
 125 *           else    index+lowid+highid
 126 */
 127 sal_uInt32 LwpObjectID::ReadIndexed(LwpObjectStream *pStrm)
 128 {
 129     m_bIsCompressed = false;
 130     if(LwpFileHeader::m_nFileRevision < 0x000B)
 131     {
 132         return Read(pStrm);
 133     }
 134
 135     m_nIndex = pStrm->QuickReaduInt8();
 136     if (m_nIndex)
 137     {
 138         m_bIsCompressed = true;
 139         //m_nLow = index;       //note the m_nLow stores the index instead of the actual time id
 140         LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
 141         LwpObjectFactory* pFactory = pGlobal->GetLwpObjFactory();
 142         LwpIndexManager& rIdxMgr = pFactory->GetIndexManager();
 143         m_nLow = rIdxMgr.GetObjTime( (sal_uInt16)m_nIndex);
 144     }
 145     else
 146         m_nLow = pStrm->QuickReaduInt32();
 147     m_nHigh = pStrm->QuickReaduInt16();
 148     return DiskSizeIndexed();
 149 }
 150 /**
 151  * @descr       Read object id with compressed format from object stream
 152  *          if diff == 255: 255+lowid+highid
 153  *          else    lowid equals to the lowid of previous low id
 154  *              and high id = the high id of previous id + diff +1
 155 */
 156 void LwpObjectID::ReadCompressed( LwpObjectStream* pObj, LwpObjectID &prev )
 157 {
 158     sal_uInt8 diff = pObj->QuickReaduInt8();
 159
 160     if (diff == 255)
 161     {
 162         Read(pObj);
 163     }
 164     else
 165     {
 166         m_nLow = prev.GetLow();
 167         m_nHigh = prev.GetHigh() + diff +1;
 168     }
 169 }
 170 /**
 171  * @descr       return the size of indexed object id
 172 */
 173 sal_uInt32 LwpObjectID::DiskSizeIndexed() const
 174 {
 175     return sizeof(sal_uInt8)
 176         + ((m_nIndex != 0) ? 0 : sizeof(m_nLow))
 177         + sizeof(m_nHigh);
 178 }
 179 /**
 180  * @descr       get object from object factory per the object id
 181 */
 182 rtl::Reference<LwpObject> LwpObjectID::obj(VO_TYPE tag) const
 183 {
 184     if (IsNull())
 185     {
 186         return nullptr;
 187     }
 188     LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
 189     LwpObjectFactory* pObjMgr = pGlobal->GetLwpObjFactory();
 190     rtl::Reference<LwpObject> pObj = pObjMgr->QueryObject(*this);
 191     if( tag!=VO_INVALID &&  (pObj.is()) )
 192     {
 193         if(static_cast<sal_uInt32>(tag) != pObj->GetTag())
 194         {
 195             pObj.clear();
 196         }
 197     }
 198     return pObj;
 199 }
 200
 201 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */