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mainwindow.cpp
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mainwindow.cpp
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/*
ICUQtPOC - Integrating libICU for Unicode Conversion in Qt apps
Copyright (C) 2022 Pedro Lopez-Cabanillas
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 3 of the License, or
(at your option) any later version.
This program 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 <https://www.gnu.org/licenses/>.
*/
#include <algorithm>
#include <QFileDialog>
#include <QDebug>
#include <QDataStream>
#include <QFile>
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "icuconverter.h"
#include "icudetector.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
connect(ui->actionQuit, &QAction::triggered, this, &MainWindow::close);
connect(ui->actionOpen, &QAction::triggered, this, &MainWindow::openFile);
ui->comboBox->clear();
QList<QByteArray> names = ICUConverter::charsetNames();
std::sort(names.begin(), names.end());
foreach(const QByteArray& cs, names) {
ui->comboBox->addItem(QString::fromLatin1(cs), cs);
}
ui->comboBox->setCurrentIndex(-1);
connect(ui->comboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &MainWindow::slotDecode);
resize(640, 480);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::openFile()
{
QFileDialog dlg(this);
dlg.setFileMode(QFileDialog::ExistingFile);
dlg.setNameFilter(tr("Text Files (*.txt)"));
dlg.setViewMode(QFileDialog::List);
if (dlg.exec()) {
QStringList fileNames = dlg.selectedFiles();
QFileInfo fi(fileNames.first());
QFile f(fi.absoluteFilePath());
if (f.open(QIODevice::ReadOnly)) {
m_data = f.readAll();
ui->textEdit->clear();
setWindowTitle("ICUQtPOC: " + fi.fileName());
f.close();
ICUDetector det;
QByteArray charset = det.detect(m_data);
if (charset.isEmpty()) {
ui->comboBox->setCurrentIndex(-1);
} else {
int cur = ui->comboBox->currentIndex();
int idx = ui->comboBox->findData(charset);
if (cur == idx) {
slotDecode(idx);
} else {
ui->comboBox->setCurrentIndex(idx);
}
}
}
}
}
void MainWindow::slotDecode(const int idx)
{
if (idx < 0) {
qDebug() << Q_FUNC_INFO << idx;
ui->textEdit->clear();
} else {
QByteArray codecName = ui->comboBox->itemData(idx).toByteArray();
qDebug() << Q_FUNC_INFO << codecName;
ICUConverter cnv(codecName);
ui->textEdit->setText(cnv.convertToUnicode(m_data));
}
}