<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, 67 insertions, 0 deletions

diff --git a/src/core/file/FileOperator.cpp b/src/core/file/FileOperator.cpp
new file mode 100644
index 00000000..e721fc7e
--- /dev/null
+++ b/src/core/file/FileOperator.cpp
@@ -0,0 +1,67 @@
+/**
+* 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
+*
+*/
+
+#include "FileOperator.h"
+
+bool GpgFrontend::FileOperator::ReadFile(const QString& file_name,
+                                         QByteArray& data) {
+  QFile file(file_name);
+  if (!file.open(QIODevice::ReadOnly)) {
+    LOG(ERROR) << "failed to open file" << file_name.toStdString();
+    return false;
+  }
+  data = file.readAll();
+  file.close();
+  return true;
+}
+
+bool GpgFrontend::FileOperator::WriteFile(const QString& file_name,
+                                          const QByteArray& data) {
+  QFile file(file_name);
+  if (!file.open(QIODevice::WriteOnly)) {
+    LOG(ERROR) << "failed to open file" << file_name.toStdString();
+    return false;
+  }
+  file.write(data);
+  file.close();
+  return true;
+}
+
+bool GpgFrontend::FileOperator::ReadFileStd(
+    const std::filesystem::path& file_name, std::string& data) {
+  QByteArray byte_data;
+  bool res = ReadFile(QString::fromStdString(file_name.string()), byte_data);
+  data = byte_data.toStdString();
+  return res;
+}
+
+bool GpgFrontend::FileOperator::WriteFileStd(
+    const std::filesystem::path& file_name, const std::string& data) {
+  return WriteFile(QString::fromStdString(file_name.string()),
+                       QByteArray::fromStdString(data));
+}