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
   5  *  either of the following licenses
   6  *
   7  *         - GNU Lesser General Public License Version 2.1
   8  *         - Sun Industry Standards Source License Version 1.1
   9  *
  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
  23  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  24  *  Lesser General Public License for more details.
  25  *
  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,
  29  *  MA  02111-1307  USA
  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  * Change History
  62  Jan 2005           Created
  63  ************************************************************************/
  64
  65 #include "lwpobjid.hxx"
  66 #include "lwpfilehdr.hxx"
  67 #include "lwpobjfactory.hxx"
  68 #include "lwpglobalmgr.hxx"
  69
  70 LwpObjectID::LwpObjectID(sal_uInt32 low, sal_uInt16 high)
  71     :m_nLow(low), m_nHigh(high), m_nIndex(0), m_bIsCompressed(false)
  72 {
  73 }
  74 /**
  75  * @descr       Read object id with format: low(4bytes)+high(2bytes) from stream
  76  *          for LWP7 record
  77 */
  78 sal_uInt32 LwpObjectID::Read(LwpSvStream *pStrm)
  79 {
  80     pStrm->ReadUInt32( m_nLow );
  81     pStrm->ReadUInt16( m_nHigh );
  82     return DiskSize();
  83 }
  84 /**
  85  * @descr       Read object id with format: low(4bytes)+high(2bytes) from object stream
  86 */
  87 sal_uInt32 LwpObjectID::Read(LwpObjectStream *pObj)
  88 {
  89     m_nLow = pObj->QuickReaduInt32();
  90     m_nHigh = pObj->QuickReaduInt16();
  91     return DiskSize();
  92 }
  93 /**
  94  * @descr       Read object id with indexed format from stream
  95  *          if index>0, lowid is get from time table per the index
  96 *           else    index+lowid+highid
  97 */
  98 sal_uInt32 LwpObjectID::ReadIndexed(LwpSvStream *pStrm)
  99 {
 100 //note the m_nLow store the index instead of time from the timetable as in LWP
 101     m_bIsCompressed = false;
 102     if( LwpFileHeader::m_nFileRevision < 0x000B)
 103     {
 104         return Read(pStrm);
 105     }
 106
 107     pStrm->ReadUInt8( m_nIndex );
 108
 109     if (m_nIndex)
 110     {
 111         m_bIsCompressed = true;
 112         //m_nLow = index;       //note the m_nLow stores the index instead of the actual time id
 113         LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
 114         LwpObjectFactory* pFactory = pGlobal->GetLwpObjFactory();
 115         LwpIndexManager& rIdxMgr = pFactory->GetIndexManager();
 116         m_nLow = rIdxMgr.GetObjTime( (sal_uInt16)m_nIndex);
 117     }
 118     else
 119     {
 120         pStrm->ReadUInt32( m_nLow );
 121     }
 122     pStrm->ReadUInt16( m_nHigh );
 123     return DiskSizeIndexed();
 124 }
 125
 126 /**
 127  * @descr       Read object id with indexed format from object stream
 128  *          if index>0, lowid is get from time table per the index
 129 *           else    index+lowid+highid
 130 */
 131 sal_uInt32 LwpObjectID::ReadIndexed(LwpObjectStream *pStrm)
 132 {
 133     m_bIsCompressed = false;
 134     if(LwpFileHeader::m_nFileRevision < 0x000B)
 135     {
 136         return Read(pStrm);
 137     }
 138
 139     m_nIndex = pStrm->QuickReaduInt8();
 140     if (m_nIndex)
 141     {
 142         m_bIsCompressed = true;
 143         //m_nLow = index;       //note the m_nLow stores the index instead of the actual time id
 144         LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
 145         LwpObjectFactory* pFactory = pGlobal->GetLwpObjFactory();
 146         LwpIndexManager& rIdxMgr = pFactory->GetIndexManager();
 147         m_nLow = rIdxMgr.GetObjTime( (sal_uInt16)m_nIndex);
 148     }
 149     else
 150         m_nLow = pStrm->QuickReaduInt32();
 151     m_nHigh = pStrm->QuickReaduInt16();
 152     return DiskSizeIndexed();
 153 }
 154 /**
 155  * @descr       Read object id with compressed format from object stream
 156  *          if diff == 255: 255+lowid+highid
 157  *          else    lowid equals to the lowid of previous low id
 158  *              and high id = the high id of previous id + diff +1
 159 */
 160 sal_uInt32 LwpObjectID::ReadCompressed( LwpObjectStream* pObj, LwpObjectID &prev )
 161 {
 162     sal_uInt8 diff = pObj->QuickReaduInt8();
 163     sal_uInt32 len=1;
 164
 165     if (diff == 255)
 166     {
 167         len += Read(pObj);
 168     }
 169     else
 170     {
 171         m_nLow = prev.GetLow();
 172         m_nHigh = prev.GetHigh() + diff +1;
 173     }
 174     return len;
 175 }
 176 /**
 177  * @descr       return the size of indexed object id
 178 */
 179 sal_uInt32 LwpObjectID::DiskSizeIndexed() const
 180 {
 181     return sizeof(sal_uInt8)
 182         + ((m_nIndex != 0) ? 0 : sizeof(m_nLow))
 183         + sizeof(m_nHigh);
 184 }
 185 /**
 186  * @descr       get object from object factory per the object id
 187 */
 188 rtl::Reference<LwpObject> LwpObjectID::obj(VO_TYPE tag) const
 189 {
 190     LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
 191     LwpObjectFactory* pObjMgr = pGlobal->GetLwpObjFactory();
 192     if(IsNull())
 193     {
 194         return NULL;
 195     }
 196     rtl::Reference<LwpObject> pObj = pObjMgr->QueryObject(*this);
 197     if( tag!=VO_INVALID &&  (pObj.is()) )
 198     {
 199         if(static_cast<sal_uInt32>(tag) != pObj->GetTag())
 200         {
 201             pObj.clear();
 202         }
 203     }
 204     return pObj;
 205 }
 206
 207 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */