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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: PLCF.hxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: hbrinkm $ $Date: 2006-11-01 09:14:29 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 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
*
************************************************************************/
#ifndef INCLUDED_PLCF_HXX
#define INCLUDED_PLCF_HXX
#include <boost/shared_ptr.hpp>
#ifndef INCLUDED_WW8_STRUCT_BASE_HXX
#include <WW8StructBase.hxx>
#endif
namespace doctok
{
class Empty
{
public:
typedef boost::shared_ptr<Empty> Pointer_t;
Empty() {}
virtual ~Empty() {}
sal_uInt32 getSize() { return 0; }
};
template <class T>
/**
Plex in File
A PLCF is a concatenation of two arrays. The first array contains
file character positions. The second array contains elements of
type T. If the first array contains N elements, the second contains
N - 1 elements. The N-th element in the first array corresponds to
the N-th element of the second array.
The second array is referred to as the payload.
*/
class PLCF : public WW8StructBase
{
/// number of entries
sal_uInt32 nEntryCount;
/// offset to payload
sal_uInt32 nPayloadOffset;
/// internal method to calculate the number of entries
sal_uInt32 getEntryCount_() const;
public:
typedef boost::shared_ptr< PLCF< T > > Pointer_t;
PLCF(sal_uInt32 nLength)
: WW8StructBase(nLength), nEntryCount(getEntryCount_()),
nPayloadOffset((nEntryCount + 1) * 4)
{
}
PLCF(WW8Stream & rStream,
sal_Int32 nOffset, sal_Int32 nCount)
: WW8StructBase(rStream, nOffset, nCount),
nEntryCount(getEntryCount_()),
nPayloadOffset((nEntryCount + 1) * 4)
{
}
PLCF(const Sequence & rSequence)
: WW8StructBase(rSequence), nEntryCount(getEntryCount_()),
nPayloadOffset((nEntryCount + 1) * 4)
{
}
/**
Return the number of elements in the PLCF-
*/
sal_uInt32 getEntryCount() const { return nEntryCount; }
/**
Return the file character position of a certain element.
@param nIndex the index of the element
*/
sal_uInt32 getFc(sal_uInt32 nIndex) const;
/**
Return a C++ pointer to a certain payload entry.
@param nIndex the index of the element
*/
T * getEntryPointer(sal_uInt32 nIndex) const;
/**
Return a shared pointer to a certain payload element.
@param nIndex the index of the element
*/
typename T::Pointer_t getEntry(sal_uInt32 nIndex) const;
/**
Return a C++ pointer a certain payload element.
@param nFc the file character position of the element
*/
T * getEntryByFc(sal_uInt32 nFc) const;
virtual void dump(OutputWithDepth<string> & output) const;
};
template <class T>
sal_uInt32 PLCF<T>::getEntryCount_() const
{
return (getCount() - 4) / (T::getSize() + 4);
}
template <class T>
sal_uInt32 PLCF<T>::getFc(sal_uInt32 nIndex) const
{
return getU32(nIndex * 4);
}
template <class T>
T * PLCF<T>::getEntryPointer(sal_uInt32 nIndex) const
{
return new T(mSequence, nPayloadOffset + nIndex * T::getSize(),
T::getSize());
}
template <class T>
typename T::Pointer_t PLCF<T>::getEntry(sal_uInt32 nIndex) const
{
typename T::Pointer_t pResult(getEntryPointer(nIndex));
return pResult;
}
template <class T>
T * PLCF<T>::getEntryByFc(sal_uInt32 nFc) const
{
T * pResult = NULL;
sal_uInt32 n = getEntryCount();
while (getFc(n) > nFc)
n--;
pResult = getEntryPointer(n);
return pResult;
}
template <class T>
void PLCF<T>::dump(OutputWithDepth<string> & output) const
{
output.addItem("<plcf>");
WW8StructBase::dump(output);
sal_uInt32 nCount = getEntryCount();
for (sal_uInt32 n = 0; n < nCount; ++n)
{
Fc aFc = getFc(n);
typename T::Pointer_t pT = getEntry(n);
output.addItem("<plcfentry cpandfc=\"" + aFc.toString() + "\">");
pT->dump(output);
output.addItem("</plcfentry>");
}
output.addItem("</plcf>>");
}
}
#endif // INCLUDED_PLCF_HXX
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