lwpobjid.cxx

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/*************************************************************************
 * @file
 *  For LWP filter architecture prototype
 ************************************************************************/
 
#include <lwpobjid.hxx>
#include <lwpfilehdr.hxx>
#include <lwpobjfactory.hxx>
#include <lwpglobalmgr.hxx>
 
LwpObjectID::LwpObjectID()
    : m_nLow(0)
    , m_nHigh(0)
    , m_nIndex(0)
    , m_bIsCompressed(false)
{
}
void LwpObjectID::Read(LwpSvStream* pStrm)
{
    pStrm->ReadUInt32(m_nLow);
    pStrm->ReadUInt16(m_nHigh);
}
sal_uInt32 LwpObjectID::Read(LwpObjectStream* pObj)
{
    m_nLow = pObj->QuickReaduInt32();
    m_nHigh = pObj->QuickReaduInt16();
    return DiskSize();
}
void LwpObjectID::ReadIndexed(LwpSvStream* pStrm)
{
    //note the m_nLow store the index instead of time from the timetable as in LWP
    m_bIsCompressed = false;
    if (LwpFileHeader::m_nFileRevision < 0x000B)
    {
        Read(pStrm);
        return;
    }
 
    pStrm->ReadUInt8(m_nIndex);
 
    if (m_nIndex)
    {
        m_bIsCompressed = 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& rIdxMgr = pFactory->GetIndexManager();
        m_nLow = rIdxMgr.GetObjTime(static_cast<sal_uInt16>(m_nIndex));
    }
    else
    {
        pStrm->ReadUInt32(m_nLow);
    }
    pStrm->ReadUInt16(m_nHigh);
    DiskSizeIndexed();
}
 
sal_uInt32 LwpObjectID::ReadIndexed(LwpObjectStream* pStrm)
{
    m_bIsCompressed = false;
    if (LwpFileHeader::m_nFileRevision < 0x000B)
    {
        return Read(pStrm);
    }
 
    m_nIndex = pStrm->QuickReaduInt8();
    if (m_nIndex)
    {
        m_bIsCompressed = 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& rIdxMgr = pFactory->GetIndexManager();
        m_nLow = rIdxMgr.GetObjTime(static_cast<sal_uInt16>(m_nIndex));
    }
    else
        m_nLow = pStrm->QuickReaduInt32();
    m_nHigh = pStrm->QuickReaduInt16();
    return DiskSizeIndexed();
}
void LwpObjectID::ReadCompressed(LwpObjectStream* pObj, LwpObjectID const& prev)
{
    sal_uInt8 diff = pObj->QuickReaduInt8();
 
    if (diff == 255)
    {
        Read(pObj);
    }
    else
    {
        m_nLow = prev.GetLow();
        m_nHigh = prev.GetHigh() + diff + 1;
    }
}
sal_uInt32 LwpObjectID::DiskSizeIndexed() const
{
    return sizeof(sal_uInt8) + ((m_nIndex != 0) ? 0 : sizeof(m_nLow)) + sizeof(m_nHigh);
}
rtl::Reference<LwpObject> LwpObjectID::obj(VO_TYPE tag) const
{
    if (IsNull())
    {
        return nullptr;
    }
    LwpGlobalMgr* pGlobal = LwpGlobalMgr::GetInstance();
    LwpObjectFactory* pObjMgr = pGlobal->GetLwpObjFactory();
    rtl::Reference<LwpObject> pObj = pObjMgr->QueryObject(*this);
    if (tag != VO_INVALID && (pObj.is()))
    {
        if (static_cast<sal_uInt32>(tag) != pObj->GetTag())
        {
            pObj.clear();
        }
    }
    return pObj;
}
 
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