/* -*- 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 <precomp.h>
#include <tools/tkpchars.hxx>

// NOT FULLY DECLARED SERVICES
#include <cosv/bstream.hxx>
#include <cosv/x.hxx>



CharacterSource::CharacterSource()
    :   dpSource(new char[2]),
        nSourceSize(0),
        nCurPos(0),
        nLastCut(0),
        nLastTokenStart(0),
        cCharAtLastCut(0)
{
    dpSource[nSourceSize] = NULCH;
    dpSource[nSourceSize+1] = NULCH;
}

CharacterSource::~CharacterSource()
{
    delete [] dpSource;
}

void
CharacterSource::LoadText(csv::bstream & io_rSource)
{
    if (dpSource != 0)
        delete [] dpSource;

    io_rSource.seek(0, csv::end);
    nSourceSize = intt(io_rSource.position());
    io_rSource.seek(0);

    dpSource = new char[nSourceSize+1];

    intt nCount = (intt) io_rSource.read(dpSource,nSourceSize);
    if (nCount != nSourceSize)
        throw csv::X_Default("IO-Error: Could not load file completely.");

    dpSource[nSourceSize] = NULCH;

    BeginSource();
}

const char *
CharacterSource::CutToken()
{
    dpSource[nLastCut] = cCharAtLastCut;
    nLastTokenStart = nLastCut;
    nLastCut = CurPos();
    cCharAtLastCut = dpSource[nLastCut];
    dpSource[nLastCut] = NULCH;

    return &dpSource[nLastTokenStart];
}

void
CharacterSource::BeginSource()
{
    nCurPos = 0;
    nLastCut = 0;
    nLastTokenStart = 0;
    cCharAtLastCut = dpSource[nLastCut];
    dpSource[nLastCut] = NULCH;
}

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