/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
 */

#include <sal/config.h>
#include <stdio.h>
#include <sfx2/docfile.hxx>

#include "global.hxx"
#include "scerrors.hxx"
#include "docpool.hxx"
#include "patattr.hxx"
#include "filter.hxx"
#include "document.hxx"
#include "formulacell.hxx"
#include "biff.hxx"

ScBiffReader::ScBiffReader(SfxMedium& rMedium)
    : mnId(0)
    , mnLength(0)
    , mnOffset(0)
    , mbEndOfFile(false)
{
    mpStream = rMedium.GetInStream();
    if( mpStream )
    {
        mpStream->SetBufferSize( 65535 );
        mpStream->SetStreamCharSet( RTL_TEXTENCODING_MS_1252 );
    }
}

ScBiffReader::~ScBiffReader()
{
    if( mpStream )
        mpStream->SetBufferSize( 0 );
}

bool ScBiffReader::nextRecord()
{
    if( !recordsLeft() )
        return false;

    if( IsEndOfFile() )
        return false;

    sal_uInt32 nPos = mpStream->Tell();
    if( nPos != mnOffset + mnLength )
        mpStream->Seek( mnOffset + mnLength );

    mnLength = mnId = 0;
    mpStream->ReadUInt16( mnId ).ReadUInt16( mnLength );

    mnOffset = mpStream->Tell();
#if OSL_DEBUG_LEVEL > 1
    fprintf( stderr, "Read record 0x%x length 0x%x at offset 0x%x\n",
        (unsigned)mnId, (unsigned)mnLength, (unsigned)mnOffset );

#if 1  // rather verbose
    int len = mnLength;
    while (len > 0) {
        int i, chunk = len < 16 ? len : 16;
        unsigned char data[16];
        mpStream->Read( data, chunk );

        for (i = 0; i < chunk; i++)
            fprintf( stderr, "%.2x ", data[i] );
        fprintf( stderr, "| " );
        for (i = 0; i < chunk; i++)
            fprintf( stderr, "%c", data[i] < 127 && data[i] > 30 ? data[i] : '.' );
        fprintf( stderr, "\n" );

        len -= chunk;
    }
    mpStream->Seek( mnOffset );
#endif
#endif
    return true;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
