// TortoiseSVN - a Windows shell extension for easy version control

// Copyright (C) 2007-2009 - TortoiseSVN

// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.

// This program 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 General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
#include "stdafx.h"
#include "BLOBOutStream.h"
#include "StreamException.h"

// return the (possible NULL) data we just got through Add()

const unsigned char* CBLOBOutStreamBase::GetStreamData()
{
    return data;
}

size_t CBLOBOutStreamBase::GetStreamSize()
{
    return size;
}

// construction: nothing special to do

CBLOBOutStreamBase::CBLOBOutStreamBase ( CCacheFileOutBuffer* aBuffer
                                       , SUB_STREAM_ID anID)
    : CHierachicalOutStreamBase (aBuffer, anID)
    , data (NULL)
    , size (0)
{
}

// write local stream data and close the stream

void CBLOBOutStreamBase::Add (const unsigned char* source, size_t byteCount)
{
    assert (data == NULL);

    // this may fail under x64

    if (byteCount > (unsigned)(-1))
        throw CStreamException ("BLOB to large for stream");

    // remember the buffer & size just for a few moments

    data = source;
    size = (unsigned)byteCount;

    // write them (and all sub-streams) to file

    AutoClose();
}