1 files changed, 111 insertions, 0 deletions
diff --git a/api/logic/RecursiveFileSystemWatcher.cpp b/api/logic/RecursiveFileSystemWatcher.cpp
new file mode 100644
index 00000000..59c3f0f0
--- /dev/null
+++ b/api/logic/RecursiveFileSystemWatcher.cpp
@@ -0,0 +1,111 @@
+#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));
+}