file_sys: add Self NCCH archive

src/core/file_sys/archive_selfncch.h

@@ -0,0 +1,45 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+#include "common/common_types.h"
+#include "core/file_sys/archive_backend.h"
+#include "core/hle/result.h"
+#include "core/loader/loader.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// FileSys namespace
+
+namespace FileSys {
+
+struct NCCHData {
+    std::shared_ptr<std::vector<u8>> icon;
+    std::shared_ptr<std::vector<u8>> logo;
+    std::shared_ptr<std::vector<u8>> banner;
+    std::shared_ptr<FileUtil::IOFile> romfs_file;
+    u64 romfs_offset = 0;
+    u64 romfs_size = 0;
+};
+
+/// File system interface to the SelfNCCH archive
+class ArchiveFactory_SelfNCCH final : public ArchiveFactory {
+public:
+    explicit ArchiveFactory_SelfNCCH(Loader::AppLoader& app_loader);
+
+    std::string GetName() const override {
+        return "SelfNCCH";
+    }
+    ResultVal<std::unique_ptr<ArchiveBackend>> Open(const Path& path) override;
+    ResultCode Format(const Path& path, const FileSys::ArchiveFormatInfo& format_info) override;
+    ResultVal<ArchiveFormatInfo> GetFormatInfo(const Path& path) const override;
+
+private:
+    NCCHData ncch_data;
+};
+
+} // namespace FileSys