Mercurial > hg > svcore
view data/fileio/CSVFileWriter.cpp @ 1881:b504df98c3be
Ensure completion on output model is started at zero, so if it's checked before the input model has become ready and the transform has begun, it is not accidentally reported as complete (affected re-aligning models in Sonic Lineup when replacing the session)
author | Chris Cannam |
---|---|
date | Fri, 26 Jun 2020 11:45:39 +0100 |
parents | 21c792334c2e |
children |
line wrap: on
line source
/* -*- 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 "CSVStreamWriter.h" #include "model/Model.h" #include "model/SparseOneDimensionalModel.h" #include "model/SparseTimeValueModel.h" #include "model/NoteModel.h" #include "model/TextModel.h" #include "base/TempWriteFile.h" #include "base/Exceptions.h" #include "base/Selection.h" #include <QFile> #include <QTextStream> #include <exception> CSVFileWriter::CSVFileWriter(QString path, Model *model, QString delimiter, DataExportOptions options) : m_path(path), m_model(model), m_error(""), m_delimiter(delimiter), m_options(options) { } CSVFileWriter::~CSVFileWriter() { } bool CSVFileWriter::isOK() const { return m_error == ""; } QString CSVFileWriter::getError() const { return m_error; } void CSVFileWriter::write() { Selection all { m_model->getStartFrame(), m_model->getEndFrame() }; MultiSelection selections; selections.addSelection(all); writeSelection(selections); } void CSVFileWriter::writeSelection(MultiSelection selection) { try { TempWriteFile temp(m_path); QFile file(temp.getTemporaryFilename()); if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) { m_error = tr("Failed to open file %1 for writing") .arg(temp.getTemporaryFilename()); return; } QTextStream out(&file); if (m_options & DataExportIncludeHeader) { out << StringBits::joinDelimited (m_model->getStringExportHeaders(m_options), m_delimiter) << endl; } sv_frame_t blockSize = 65536; if (m_model->isSparse()) { // Write the whole in one go, as re-seeking for each block // may be very costly otherwise sv_frame_t startFrame, endFrame; selection.getExtents(startFrame, endFrame); blockSize = endFrame - startFrame; } bool completed = CSVStreamWriter::writeInChunks( out, *m_model, selection, m_reporter, m_delimiter, m_options, blockSize ); file.close(); if (completed) { temp.moveToTarget(); } } catch (FileOperationFailed &f) { m_error = f.what(); } catch (const std::exception &e) { // ProgressReporter could throw m_error = e.what(); } }