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/****************************************************************************
** Copyright (c) 2016, Adel Kara Slimane <adel.ks@zegrapher.com>
**
** This file is part of ZeGrapher's source code.
**
** ZeGrapher is free software: you may copy, redistribute and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation, either version 3 of the License, or (at your
** option) any later version.
**
** This file 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, see <http://www.gnu.org/licenses/>.
**
****************************************************************************/
#include "csvhandler.h"
CSVhandler::CSVhandler(QWidget *parent): QDialog(parent), ui(new Ui::CSVconfig)
{
ui->setupUi(this);
fileDialog = new QFileDialog(this);
fileDialog->setNameFilter(tr("Data (*.csv)"));
job = CSV_NO_FILE;
setWindowIcon(QIcon(":/icons/csv.png"));
connect(ui->apply, SIGNAL(released()), this, SLOT(apply()));
connect(ui->askForFileLocation, SIGNAL(released()), this, SLOT(askForFileLocation()));
connect(ui->cancel, SIGNAL(released()), this, SLOT(close()));
}
void CSVhandler::askForFileLocation()
{
if(fileDialog->exec())
{
ui->fileLocation->setText(fileDialog->selectedFiles().first());
if(job == CSV_FILE_SAVE && !ui->fileLocation->text().endsWith(".csv"))
ui->fileLocation->setText(ui->fileLocation->text()+".csv");
}
}
void CSVhandler::getDataFromCSV()
{
setWindowTitle(tr("Open data from file"));
ui->apply->setText(tr("Open"));
ui->fileLocation->clear();
job = CSV_FILE_OPEN;
fileDialog->setAcceptMode(QFileDialog::AcceptOpen);
exec();
}
void CSVhandler::saveCSV(QList<QStringList> data)
{
values = data;
removeUnnecessaryCells();
setWindowTitle(tr("Save data"));
ui->apply->setText(tr("Save"));
ui->fileLocation->clear();
job = CSV_FILE_SAVE;
fileDialog->setAcceptMode(QFileDialog::AcceptSave);
exec();
}
void CSVhandler::removeUnnecessaryCells()
{
bool unnecessary = true;
int col = 0, row = 1;
for(row = 0 ; row < values.size(); row++)
for(col = 0 ; col < values[row].size(); col++)
if(values[row][col] == " ")
values[row][col].clear();
//start by removing unnecessary columns, at first, "values" is a square matrix, that's why it's possbile to ask for values[0].size()
col = 0;
row = 1;
while(col < values[0].size())
{
unnecessary = true;
for(row = 1 ; row < values.size() && unnecessary ; row++)
unnecessary = values[row][col].isEmpty();
if(unnecessary)
for(row = 0 ; row < values.size() ; row++)
values[row].removeAt(col);
else col++;
}
//removing unnecessary rows
row = 0;
while(row < values.size())
{
unnecessary = true;
for(col = 0 ; col < values[0].size() && unnecessary ; col++)
unnecessary = values[row][col].isEmpty();
if(unnecessary)
values.removeAt(row);
else row++;
}
//removing empty cells at the end of each line
for(row = 0 ; row < values.size(); row++)
while(values[row].last().isEmpty()) {values[row].removeLast();}
}
void CSVhandler::apply()
{
if(ui->fileLocation->text().isEmpty())
{
QMessageBox::warning(this, tr("Error"), tr("Target file was not specified."));
return;
}
if(ui->customSeparator->isChecked() and ui->delimiter->text().isEmpty())
{
QMessageBox::warning(this, tr("Error"), tr("Separator was not specified."));
return;
}
if(job == CSV_FILE_SAVE)
{
QFile file(ui->fileLocation->text());
if(file.open(QFile::WriteOnly | QFile::Truncate | QFile::Text))
{
QTextStream out(&file);
QString delimiter = ui->tabSeparator->isChecked() ? "\t" : ui->delimiter->text();
for(int i = 0 ; i < values.size(); i++)
out << values[i].join(delimiter) << '\n';
file.close();
}
}
else if(job == CSV_FILE_OPEN)
{
QFile file(ui->fileLocation->text());
values.clear();
if(file.open(QFile::ReadOnly | QFile::Text))
{
QTextStream in(&file);
QString delimiter = ui->tabSeparator->isChecked() ? "\t" : ui->delimiter->text();
while(!in.atEnd())
values << in.readLine().split(delimiter);
file.close();
emit dataFromCSV(values);
}
}
close();
}
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