feat: fast hash checker

ServerLMS/Systems/fasthashcalculator.cpp

@@ -0,0 +1,96 @@
+#include "fasthashcalculator.h"
+#include <QtConcurrent>
+
+
+FastHashCalculator::FastHashCalculator(QObject *parent) : QObject(parent)
+{
+    hashList = new QList<FileData>();
+}
+void FastHashCalculator::calculateHashes(QString path)
+{
+    hashList->clear();
+
+    if(!QDir(path).exists()){
+        QDir().mkdir(path);
+    }
+
+    QString hashString;
+    QStringList filter;
+    filter << "*";
+    QList<FileData> *folders = new QList<FileData>;
+
+    QDirIterator dirIterator(path,filter, QDir::AllEntries, QDirIterator::Subdirectories);
+
+    while (dirIterator.hasNext())
+    {
+        QFileInfo fileInfo(dirIterator.next());
+        FileData currentFolder;
+        if(fileInfo.isDir() && !fileInfo.fileName().startsWith(".") && fileInfo.fileName() != projectFolderName)
+        {
+            currentFolder.path = Tools::createLocalPath(fileInfo.absoluteFilePath());
+            currentFolder.hash = "FOLDER";
+
+            if(!folders->contains(currentFolder))
+            {
+                folders->push_back(currentFolder);
+            }
+        }
+    }
+
+    hashList->append(*folders);
+
+    QDirIterator fileIterator(path,filter,QDir::Files | QDir::NoDotAndDotDot,QDirIterator::Subdirectories);
+
+    QList<QString> files;
+    files.clear();
+
+    while(fileIterator.hasNext())
+    {
+        fileIterator.next();
+        QFileInfo fileInfo = fileIterator.fileInfo();
+        QString path = fileInfo.absoluteFilePath();
+
+        if (fileInfo.isHidden()) continue;
+        if (!fileInfo.isFile()) continue;
+        if (fileInfo.fileName().contains(".meta")) continue;
+
+        files.append(path);
+    }
+
+    QtConcurrent::map(files, [this](const QString &filePath)
+    {
+        QByteArray hash = calculateFileHashOptimized(filePath);
+        QMutexLocker locker(&_mutex);
+        FileData currentFile;
+        QString hashName;
+
+        currentFile.path = Tools::createLocalPath(filePath);
+        currentFile.hash = hash.toHex();
+        hashList->append(currentFile);
+     }).waitForFinished();
+
+    emit finished();
+}
+
+QByteArray FastHashCalculator::calculateFileHashOptimized(const QString &filePath)
+{
+    QFile file(filePath);
+            if (!file.open(QIODevice::ReadOnly)) return QByteArray();
+
+            QCryptographicHash hash(QCryptographicHash::Md5);
+            const qint64 bufferSize = 2 * 1024; // 2MB
+            QByteArray buffer;
+            buffer.resize(bufferSize);
+
+            while (!file.atEnd()) {
+                qint64 bytesRead = file.read(buffer.data(), bufferSize);
+                hash.addData(buffer.constData(), bytesRead);
+            }
+
+            return hash.result();
+}
+
+QList<FileData> *FastHashCalculator::getHashList() const
+{
+    return hashList;
+}