60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
/*
|
|
* Deskflow -- mouse and keyboard sharing utility
|
|
* SPDX-FileCopyrightText: (C) 2026 Deskflow Developers
|
|
* SPDX-FileCopyrightText: (C) 2025 Synergy App Ltd
|
|
* SPDX-License-Identifier: GPL-2.0-only WITH LicenseRef-OpenSSL-Exception
|
|
*/
|
|
|
|
#include "FileTail.h"
|
|
|
|
#include <QDebug>
|
|
#include <QFile>
|
|
#include <QFileSystemWatcher>
|
|
#include <QObject>
|
|
#include <QTextStream>
|
|
|
|
namespace deskflow::gui {
|
|
|
|
FileTail::FileTail(const QString &filePath, QObject *parent) : QObject(parent), m_watcher(new QFileSystemWatcher(this))
|
|
{
|
|
setWatchedFile(filePath);
|
|
connect(m_watcher, &QFileSystemWatcher::fileChanged, this, &FileTail::handleFileChanged);
|
|
}
|
|
|
|
void FileTail::setWatchedFile(const QString &filePath)
|
|
{
|
|
if (filePath.isEmpty())
|
|
return;
|
|
|
|
if (m_file.fileName() == filePath)
|
|
return;
|
|
|
|
if (!m_file.fileName().isEmpty()) {
|
|
m_watcher->removePath(m_file.fileName());
|
|
m_file.close();
|
|
m_file.setFileName(filePath);
|
|
}
|
|
|
|
m_file.setFileName(filePath);
|
|
if (!m_file.open(QIODevice::ReadOnly | QIODevice::Text)) {
|
|
qCritical() << "failed to open file for tail:" << filePath;
|
|
return;
|
|
}
|
|
|
|
qDebug() << "starting file tail:" << filePath;
|
|
m_watcher->addPath(filePath);
|
|
m_lastPos = m_file.size();
|
|
}
|
|
|
|
void FileTail::handleFileChanged(const QString &)
|
|
{
|
|
m_file.seek(m_lastPos);
|
|
QTextStream stream(&m_file);
|
|
while (!stream.atEnd()) {
|
|
QString line = stream.readLine();
|
|
Q_EMIT newLine(line);
|
|
}
|
|
m_lastPos = m_file.pos();
|
|
}
|
|
|
|
} // namespace deskflow::gui
|