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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: IBM Corporation
*
* Copyright: 2008 by IBM Corporation
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
/*************************************************************************
* @file
* For LWP filter architecture prototype
************************************************************************/
/*************************************************************************
* Change History
Jan 2005 Created
************************************************************************/
#ifndef _LWPOBJECTID_HXX
#include "lwpobjid.hxx"
#endif
#include "lwpfilehdr.hxx"
#include "lwpobjfactory.hxx"
#include "lwpglobalmgr.hxx"
LwpObjectID::LwpObjectID(sal_uInt32 low, sal_uInt16 high)
:m_nLow(low), m_nHigh(high), m_bIsCompressed(sal_False), m_nIndex(0)
{
}
/**
* @descr Read object id with format: low(4bytes)+high(2bytes) from stream
* for LWP7 record
*/
sal_uInt32 LwpObjectID::Read(LwpSvStream *pStrm)
{
pStrm->Read(&m_nLow, sizeof(m_nLow));
pStrm->Read(&m_nHigh, sizeof(m_nHigh));
return DiskSize();
}
/**
* @descr Read object id with format: low(4bytes)+high(2bytes) from object stream
*/
sal_uInt32 LwpObjectID::Read(LwpObjectStream *pObj)
{
pObj->QuickRead(&m_nLow, sizeof(m_nLow));
pObj->QuickRead(&m_nHigh, sizeof(m_nHigh));
return DiskSize();
}
/**
* @descr Read object id with indexed format from stream
* if index>0, lowid is get from time table per the index
* else index+lowid+highid
*/
sal_uInt32 LwpObjectID::ReadIndexed(LwpSvStream *pStrm)
{
//note the m_nLow store the index instead of time from the timetable as in LWP
m_bIsCompressed = sal_False;
if( LwpFileHeader::m_nFileRevision < 0x000B)
{
return Read(pStrm);
}
pStrm->Read(&m_nIndex, sizeof(m_nIndex));
if (m_nIndex)
{
m_bIsCompressed = sal_True;
//m_nLow = index; //note the m_nLow stores the index instead of the actual time id
LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
LwpObjectFactory* pFactory = pGlobal->GetLwpObjFactory();
LwpIndexManager* pIdxMgr = pFactory->GetIndexManager();
m_nLow = pIdxMgr->GetObjTime( (sal_uInt16)m_nIndex);
}
else
{
pStrm->Read(&m_nLow, sizeof(m_nLow));
}
pStrm->Read(&m_nHigh, sizeof(m_nHigh));
return DiskSizeIndexed();
}
/**
* @descr Read object id with indexed format from object stream
* if index>0, lowid is get from time table per the index
* else index+lowid+highid
*/
sal_uInt32 LwpObjectID::ReadIndexed(LwpObjectStream *pStrm)
{
m_bIsCompressed = sal_False;
if(LwpFileHeader::m_nFileRevision < 0x000B)
{
return Read(pStrm);
}
pStrm->QuickRead(&m_nIndex, sizeof(m_nIndex));
if (m_nIndex)
{
m_bIsCompressed = sal_True;
//m_nLow = index; //note the m_nLow stores the index instead of the actual time id
LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
LwpObjectFactory* pFactory = pGlobal->GetLwpObjFactory();
LwpIndexManager* pIdxMgr = pFactory->GetIndexManager();
m_nLow = pIdxMgr->GetObjTime( (sal_uInt16)m_nIndex);
}
else
{
pStrm->QuickRead(&m_nLow, sizeof(m_nLow));
}
pStrm->QuickRead(&m_nHigh, sizeof(m_nHigh));
return DiskSizeIndexed();
}
/**
* @descr Read object id with compressed format from stream
* if diff == 255: 255+lowid+highid
* else lowid equals to the lowid of previous low id
* and high id = the high id of previous id + diff +1
*/
sal_uInt32 LwpObjectID::ReadCompressed( LwpSvStream* pStrm, LwpObjectID &prev )
{
sal_uInt32 len=0;
sal_uInt8 diff;
len = pStrm->Read( &diff, sizeof(diff));
if (diff == 255)
{
len += Read(pStrm);
}
else
{
m_nLow = prev.GetLow();
m_nHigh = prev.GetHigh() + diff +1;
}
return len;
}
/**
* @descr Read object id with compressed format from object stream
* if diff == 255: 255+lowid+highid
* else lowid equals to the lowid of previous low id
* and high id = the high id of previous id + diff +1
*/
sal_uInt32 LwpObjectID::ReadCompressed( LwpObjectStream* pObj, LwpObjectID &prev )
{
sal_uInt32 len=0;
sal_uInt8 diff;
len += pObj->QuickRead( &diff, sizeof(diff));
if (diff == 255)
{
len += Read(pObj);
}
else
{
m_nLow = prev.GetLow();
m_nHigh = prev.GetHigh() + diff +1;
}
return len;
}
/**
* @descr return the size of indexed object id
*/
sal_uInt32 LwpObjectID::DiskSizeIndexed() const
{
return sizeof(sal_uInt8)
+ (((0 < m_nIndex) && (m_nIndex <= 255)) ? 0 : sizeof(m_nLow))
+ sizeof(m_nHigh);
}
/**
* @descr return the size of object id with format: low(4bytes)+high(2bytes)
*/
sal_uInt32 LwpObjectID::DiskSize() const
{
return sizeof(m_nLow) + sizeof(m_nHigh);
}
/**
* @descr get object from object factory per the object id
*/
LwpObject* LwpObjectID::obj(VO_TYPE tag) const
{
LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
LwpObjectFactory* pObjMgr = pGlobal->GetLwpObjFactory();
if(IsNull())
{
return NULL;
}
LwpObject* pObj = pObjMgr->QueryObject(*this);
if( tag!=VO_INVALID && (pObj) )
{
if(tag!=pObj->GetTag())
{
pObj=NULL;
}
}
return(pObj);
}
/**
* @descr returns a buffer that contains the highid + lowid
*/
sal_Char* LwpObjectID::GetBuffer(sal_Char *buf)
{
buf[0] = m_nHigh && 0xFF00;
buf[1] = m_nHigh && 0x00FF;
buf[2] = m_nLow && 0xFF000000;
buf[3] = m_nLow && 0x00FF0000;
buf[4] = m_nLow && 0x0000FF00;
buf[5] = m_nLow && 0x000000FF;
return buf;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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