annotate data/fileio/CSVFileWriter.cpp @ 363:0e30c8ec15a0

* Add wave file model method for reading more than one channel at once,
  avoiding ludicrously expensive backward seeks and double-reads when
  playing multi-channel files or using them as inputs to feature extraction
  plugins

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    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.  See the file
    COPYING included with this distribution for more information.
*/

#include "CSVFileWriter.h"

#include "model/Model.h"
#include "model/SparseOneDimensionalModel.h"
#include "model/SparseTimeValueModel.h"
#include "model/NoteModel.h"
#include "model/TextModel.h"

#include <QFile>
#include <QTextStream>

CSVFileWriter::CSVFileWriter(QString path, Model *model, QString delimiter) :
    m_path(path),
    m_model(model),
    m_error(""),
    m_delimiter(delimiter)
{
}

CSVFileWriter::~CSVFileWriter()
{
}

bool
CSVFileWriter::isOK() const
{
    return m_error == "";
}

QString
CSVFileWriter::getError() const
{
    return m_error;
}

void
CSVFileWriter::write()
{
    QFile file(m_path);
    if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
        m_error = tr("Failed to open file %1 for writing").arg(m_path);
        return;
    }
    
    QTextStream out(&file);
    out << m_model->toDelimitedDataString(m_delimiter);

    file.close();
}