fatal: use fs bindings

stratosphere/fatal/source/fatal_scoped_file.hpp

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+
+namespace ams::fatal::srv {
+
+    class ScopedFile {
+        NON_COPYABLE(ScopedFile);
+        NON_MOVEABLE(ScopedFile);
+        private:
+            fs::FileHandle file;
+            s64 offset;
+            bool opened;
+        public:
+            ScopedFile(const char *path) : file(), offset(), opened(false) {
+                if (R_SUCCEEDED(fs::CreateFile(path, 0))) {
+                    this->opened = R_SUCCEEDED(fs::OpenFile(std::addressof(this->file), path, fs::OpenMode_Write | fs::OpenMode_Append));
+                }
+            }
+
+            ~ScopedFile() {
+                if (this->opened) {
+                    fs::CloseFile(file);
+                }
+            }
+
+            bool IsOpen() const {
+                return this->opened;
+            }
+
+            void WriteString(const char *str);
+            void WriteFormat(const char *fmt, ...) __attribute__((format(printf, 2, 3)));
+            void DumpMemory(const char *prefix, const void *data, size_t size);
+
+            void Write(const void *data, size_t size);
+    };
+
+}