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#include "RecursiveFileSystemWatcher.h"
#include <QRegularExpression>
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()
{
Q_ASSERT(m_root != QDir::root());
addFilesToWatcherRecursive(m_root);
m_isEnabled = true;
}
void RecursiveFileSystemWatcher::disable()
{
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 QFileInfo &info : dir.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot))
{
addFilesToWatcherRecursive(info.absoluteDir());
}
if (m_watchFiles)
{
for (const QFileInfo &info : dir.entryInfoList(QDir::Files))
{
m_watcher->addPath(info.absoluteFilePath());
}
}
}
QStringList RecursiveFileSystemWatcher::scanRecursive(const QDir &dir)
{
QStringList ret;
QRegularExpression exp(m_exp);
for (const QFileInfo &info : dir.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot | QDir::Files))
{
if (info.isFile() && exp.match(info.absoluteFilePath()).hasMatch())
{
ret.append(info.absoluteFilePath());
}
else if (info.isDir())
{
ret.append(scanRecursive(info.absoluteDir()));
}
}
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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