/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: numhead.cxx,v $
 *
 *  $Revision: 1.5 $
 *
 *  last change: $Author: rt $ $Date: 2005-09-08 16:34:04 $
 *
 *  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 GCC
#pragma hdrstop
#endif

#ifndef _DEBUG_HXX //autogen
#include <tools/debug.hxx>
#endif

#include "numhead.hxx"

//      ID's fuer Dateien:
#define SV_NUMID_SIZES                      0x4200

// STATIC DATA -----------------------------------------------------------

//SEG_EOFGLOBALS()

// =======================================================================
/*                              wird fuer SvNumberformatter nicht gebraucht
//#pragma SEG_FUNCDEF(numhead_01)

SvNumReadHeader::SvNumReadHeader(SvStream& rNewStream) :
    rStream( rNewStream )
{
    ULONG nDataSize;
    rStream >> nDataSize;
    nDataEnd = rStream.Tell() + nDataSize;
}

//#pragma SEG_FUNCDEF(numhead_02)

SvNumReadHeader::~SvNumReadHeader()
{
    ULONG nReadEnd = rStream.Tell();
    DBG_ASSERT( nReadEnd <= nDataEnd, "zuviele Bytes gelesen" );
    if ( nReadEnd != nDataEnd )
        rStream.Seek(nDataEnd);                     // Rest ueberspringen
}

//#pragma SEG_FUNCDEF(numhead_03)

ULONG SvNumReadHeader::BytesLeft() const
{
    ULONG nReadEnd = rStream.Tell();
    if (nReadEnd <= nDataEnd)
        return nDataEnd-nReadEnd;

    DBG_ERROR("Fehler bei SvNumReadHeader::BytesLeft");
    return 0;
}

// -----------------------------------------------------------------------

//#pragma SEG_FUNCDEF(numhead_04)

SvNumWriteHeader::SvNumWriteHeader(SvStream& rNewStream, ULONG nDefault) :
    rStream( rNewStream )
{
    nDataSize = nDefault;
    rStream << nDataSize;
    nDataPos = rStream.Tell();
}

//#pragma SEG_FUNCDEF(numhead_05)

SvNumWriteHeader::~SvNumWriteHeader()
{
    ULONG nPos = rStream.Tell();

    if ( nPos - nDataPos != nDataSize )             // Default getroffen?
    {
        nDataSize = nPos - nDataPos;
        rStream.Seek(nDataPos - sizeof(ULONG));
        rStream << nDataSize;                       // Groesse am Anfang eintragen
        rStream.Seek(nPos);
    }
}
*/

// =======================================================================

//#pragma SEG_FUNCDEF(numhead_06)

//! mit Skip() synchron
ImpSvNumMultipleReadHeader::ImpSvNumMultipleReadHeader(SvStream& rNewStream) :
    rStream( rNewStream )
{
    ULONG nDataSize;
    rStream >> nDataSize;
    ULONG nDataPos = rStream.Tell();
    nEntryEnd = nDataPos;

    rStream.SeekRel(nDataSize);
    USHORT nID;
    rStream >> nID;
    if (nID != SV_NUMID_SIZES)
    {
        DBG_ERROR("SV_NUMID_SIZES nicht gefunden");
    }
    ULONG nSizeTableLen;
    rStream >> nSizeTableLen;
    pBuf = new char[nSizeTableLen];
    rStream.Read( pBuf, nSizeTableLen );
    pMemStream = new SvMemoryStream( pBuf, nSizeTableLen, STREAM_READ );

    nEndPos = rStream.Tell();
    rStream.Seek( nDataPos );
}

//#pragma SEG_FUNCDEF(numhead_07)

ImpSvNumMultipleReadHeader::~ImpSvNumMultipleReadHeader()
{
    DBG_ASSERT( pMemStream->Tell() == pMemStream->GetSize(),
                "Sizes nicht vollstaendig gelesen" );
    delete pMemStream;
    delete [] pBuf;

    rStream.Seek(nEndPos);
}

//! mit ctor synchron
// static
void ImpSvNumMultipleReadHeader::Skip( SvStream& rStream )
{
    ULONG nDataSize;
    rStream >> nDataSize;
    rStream.SeekRel( nDataSize );
    USHORT nID;
    rStream >> nID;
    if ( nID != SV_NUMID_SIZES )
    {
        DBG_ERROR("SV_NUMID_SIZES nicht gefunden");
    }
    ULONG nSizeTableLen;
    rStream >> nSizeTableLen;
    rStream.SeekRel( nSizeTableLen );
}

//#pragma SEG_FUNCDEF(numhead_08)

void ImpSvNumMultipleReadHeader::EndEntry()
{
    ULONG nPos = rStream.Tell();
    DBG_ASSERT( nPos <= nEntryEnd, "zuviel gelesen" );
    if ( nPos != nEntryEnd )
        rStream.Seek( nEntryEnd );          // Rest ueberspringen
}

//#pragma SEG_FUNCDEF(numhead_0d)

void ImpSvNumMultipleReadHeader::StartEntry()
{
    ULONG nPos = rStream.Tell();
    ULONG nEntrySize;
    (*pMemStream) >> nEntrySize;

    nEntryEnd = nPos + nEntrySize;
}

//#pragma SEG_FUNCDEF(numhead_09)

ULONG ImpSvNumMultipleReadHeader::BytesLeft() const
{
    ULONG nReadEnd = rStream.Tell();
    if (nReadEnd <= nEntryEnd)
        return nEntryEnd-nReadEnd;

    DBG_ERROR("Fehler bei ImpSvNumMultipleReadHeader::BytesLeft");
    return 0;
}

// -----------------------------------------------------------------------

//#pragma SEG_FUNCDEF(numhead_0a)

ImpSvNumMultipleWriteHeader::ImpSvNumMultipleWriteHeader(SvStream& rNewStream,
                                                   ULONG nDefault) :
    rStream( rNewStream ),
    aMemStream( 4096, 4096 )
{
    nDataSize = nDefault;
    rStream << nDataSize;

    nDataPos = rStream.Tell();
    nEntryStart = nDataPos;
}

//#pragma SEG_FUNCDEF(numhead_0b)

ImpSvNumMultipleWriteHeader::~ImpSvNumMultipleWriteHeader()
{
    ULONG nDataEnd = rStream.Tell();

    rStream << (USHORT) SV_NUMID_SIZES;
    rStream << aMemStream.Tell();
    rStream.Write( aMemStream.GetData(), aMemStream.Tell() );

    if ( nDataEnd - nDataPos != nDataSize )                 // Default getroffen?
    {
        nDataSize = nDataEnd - nDataPos;
        ULONG nPos = rStream.Tell();
        rStream.Seek(nDataPos-sizeof(ULONG));
        rStream << nDataSize;                               // Groesse am Anfang eintragen
        rStream.Seek(nPos);
    }
}

//#pragma SEG_FUNCDEF(numhead_0c)

void ImpSvNumMultipleWriteHeader::EndEntry()
{
    ULONG nPos = rStream.Tell();
    aMemStream << nPos - nEntryStart;
}

//#pragma SEG_FUNCDEF(numhead_0e)

void ImpSvNumMultipleWriteHeader::StartEntry()
{
    ULONG nPos = rStream.Tell();
    nEntryStart = nPos;
}