<fix, feat, chore>(ui, core, project): Replace file IO function

1. In order to improve compatibility, use the file IO function provided by Qt
2. Introduce some necessary header files for core

1 files changed, 85 insertions, 0 deletions

diff --git a/src/core/file/FileOperator.h b/src/core/file/FileOperator.h
new file mode 100644
index 00000000..de195a96
--- /dev/null
+++ b/src/core/file/FileOperator.h
@@ -0,0 +1,85 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * This file is part of GpgFrontend.
+ *
+ * GpgFrontend 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.
+ *
+ * GpgFrontend 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 GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The initial version of the source code is inherited from
+ * the gpg4usb project, which is under GPL-3.0-or-later.
+ *
+ * All the source code of GpgFrontend was modified and released by
+ * Saturneric<[email protected]> starting on May 12, 2021.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#ifndef GPGFRONTEND_FILEOPERATOR_H
+#define GPGFRONTEND_FILEOPERATOR_H
+
+#include "core/GpgFrontendCore.h"
+
+namespace GpgFrontend {
+
+/**
+ * @brief provides file operations
+ *
+ */
+class FileOperator {
+public:
+  /**
+   * @brief read file content using std struct
+   *
+   *
+   * @param file_name file name
+   * @param data data read from file
+   * @return
+   */
+  static bool ReadFileStd(const std::filesystem::path &file_name,
+                          std::string &data);
+
+  /**
+   * @brief write file content using std struct
+   *
+   * @param file_name file name
+   * @param data data to write to file
+   * @return
+   */
+  static bool WriteFileStd(const std::filesystem::path &file_name,
+                           const std::string &data);
+
+  /**
+   * @brief read file content
+   *
+   * @param file_name file name
+   * @param data data read from file
+   * @return true if success
+   * @return false if failed
+   */
+  static bool ReadFile(const QString &file_name, QByteArray &data);
+
+  /**
+   * @brief write file content
+   *
+   * @param file_name file name
+   * @param data data to write to file
+   * @return true if success
+   * @return false if failed
+   */
+  static bool WriteFile(const QString &file_name, const QByteArray &data);
+};
+} // namespace GpgFrontend
+
+#endif // GPGFRONTEND_FILEOPERATOR_H