chore: initialize client repository

Common/FileHelper.cpp

@@ -0,0 +1,42 @@
+#include "FileHelper.h"
+#include <QDebug>
+
+bool FileHelper::createDir(const QString &path)
+{
+    QDir dir(path);
+    if (!dir.exists())
+        return dir.mkpath(".");
+    return true;
+}
+
+bool FileHelper::copyFileOverwrite(const QString &src, const QString &dst)
+{
+    if (QFile::exists(dst))
+    {
+        if (!QFile::remove(dst))
+        {
+            qDebug() << "无法删除旧文件:" << dst;
+            return false;
+        }
+    }
+    return QFile::copy(src, dst);
+}
+
+bool FileHelper::isProcessRunning(const QString &exeName)
+{
+    QProcess process;
+    process.start("tasklist");
+    process.waitForFinished();
+    QString output = process.readAllStandardOutput();
+    return output.contains(exeName, Qt::CaseInsensitive);
+}
+
+bool FileHelper::killProcess(const QString &exeName)
+{
+    if (!isProcessRunning(exeName))
+        return true;
+    QProcess process;
+    process.start("taskkill /f /im " + exeName);
+    process.waitForFinished(1000);
+    return !isProcessRunning(exeName);
+}