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/* SPDX-FileCopyrightText: 2026 Project Tick
* SPDX-FileContributor: Project Tick
* SPDX-License-Identifier: GPL-3.0-or-later
*
* MeshMC - A Custom Launcher for Minecraft
* Copyright (C) 2026 Project Tick
*
* 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 "RecursiveFileSystemWatcher.h"
#include <QRegularExpression>
#include <QDebug>
RecursiveFileSystemWatcher::RecursiveFileSystemWatcher(QObject *parent)
: QObject(parent), m_watcher(new QFileSystemWatcher(this))
{
connect(m_watcher, &QFileSystemWatcher::fileChanged, this,
&RecursiveFileSystemWatcher::fileChange);
connect(m_watcher, &QFileSystemWatcher::directoryChanged, this,
&RecursiveFileSystemWatcher::directoryChange);
}
void RecursiveFileSystemWatcher::setRootDir(const QDir &root)
{
bool wasEnabled = m_isEnabled;
disable();
m_root = root;
setFiles(scanRecursive(m_root));
if (wasEnabled)
{
enable();
}
}
void RecursiveFileSystemWatcher::setWatchFiles(const bool watchFiles)
{
bool wasEnabled = m_isEnabled;
disable();
m_watchFiles = watchFiles;
if (wasEnabled)
{
enable();
}
}
void RecursiveFileSystemWatcher::enable()
{
if (m_isEnabled)
{
return;
}
Q_ASSERT(m_root != QDir::root());
addFilesToWatcherRecursive(m_root);
m_isEnabled = true;
}
void RecursiveFileSystemWatcher::disable()
{
if (!m_isEnabled)
{
return;
}
m_isEnabled = false;
m_watcher->removePaths(m_watcher->files());
m_watcher->removePaths(m_watcher->directories());
}
void RecursiveFileSystemWatcher::setFiles(const QStringList &files)
{
if (files != m_files)
{
m_files = files;
emit filesChanged();
}
}
void RecursiveFileSystemWatcher::addFilesToWatcherRecursive(const QDir &dir)
{
m_watcher->addPath(dir.absolutePath());
for (const QString &directory : dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot))
{
addFilesToWatcherRecursive(dir.absoluteFilePath(directory));
}
if (m_watchFiles)
{
for (const QFileInfo &info : dir.entryInfoList(QDir::Files))
{
m_watcher->addPath(info.absoluteFilePath());
}
}
}
QStringList RecursiveFileSystemWatcher::scanRecursive(const QDir &directory)
{
QStringList ret;
if(!m_matcher)
{
return {};
}
for (const QString &dir : directory.entryList(QDir::Dirs | QDir::NoDotAndDotDot | QDir::Hidden))
{
ret.append(scanRecursive(directory.absoluteFilePath(dir)));
}
for (const QString &file : directory.entryList(QDir::Files | QDir::Hidden))
{
auto relPath = m_root.relativeFilePath(directory.absoluteFilePath(file));
if (m_matcher->matches(relPath))
{
ret.append(relPath);
}
}
return ret;
}
void RecursiveFileSystemWatcher::fileChange(const QString &path)
{
emit fileChanged(path);
}
void RecursiveFileSystemWatcher::directoryChange(const QString &path)
{
setFiles(scanRecursive(m_root));
}
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