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26b1aec3c1
These kinds of casts invoke undefined behavior due to alignment rules. Use memcpy instead which always does the right thing.
80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <cstring>
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#include <memory>
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#include <vector>
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#include "common/common_types.h"
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#include "common/file_util.h"
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#include "common/string_util.h"
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#include "core/file_sys/archive_systemsavedata.h"
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#include "core/file_sys/errors.h"
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#include "core/file_sys/savedata_archive.h"
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#include "core/hle/service/fs/archive.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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namespace FileSys {
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std::string GetSystemSaveDataPath(const std::string& mount_point, const Path& path) {
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const std::vector<u8> vec_data = path.AsBinary();
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u32 save_low;
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u32 save_high;
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std::memcpy(&save_low, &vec_data[4], sizeof(u32));
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std::memcpy(&save_high, &vec_data[0], sizeof(u32));
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return Common::StringFromFormat("%s%08X/%08X/", mount_point.c_str(), save_low, save_high);
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}
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std::string GetSystemSaveDataContainerPath(const std::string& mount_point) {
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return Common::StringFromFormat("%sdata/%s/sysdata/", mount_point.c_str(), SYSTEM_ID);
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}
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Path ConstructSystemSaveDataBinaryPath(u32 high, u32 low) {
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std::vector<u8> binary_path;
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binary_path.reserve(8);
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// Append each word byte by byte
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// First is the high word
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for (unsigned i = 0; i < 4; ++i)
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binary_path.push_back((high >> (8 * i)) & 0xFF);
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// Next is the low word
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for (unsigned i = 0; i < 4; ++i)
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binary_path.push_back((low >> (8 * i)) & 0xFF);
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return {binary_path};
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}
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ArchiveFactory_SystemSaveData::ArchiveFactory_SystemSaveData(const std::string& nand_path)
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: base_path(GetSystemSaveDataContainerPath(nand_path)) {}
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ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_SystemSaveData::Open(const Path& path) {
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std::string fullpath = GetSystemSaveDataPath(base_path, path);
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if (!FileUtil::Exists(fullpath)) {
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// TODO(Subv): Check error code, this one is probably wrong
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return ERR_NOT_FORMATTED;
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}
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auto archive = std::make_unique<SaveDataArchive>(fullpath);
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return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive));
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}
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ResultCode ArchiveFactory_SystemSaveData::Format(const Path& path,
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const FileSys::ArchiveFormatInfo& format_info) {
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std::string fullpath = GetSystemSaveDataPath(base_path, path);
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FileUtil::DeleteDirRecursively(fullpath);
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FileUtil::CreateFullPath(fullpath);
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return RESULT_SUCCESS;
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}
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ResultVal<ArchiveFormatInfo> ArchiveFactory_SystemSaveData::GetFormatInfo(const Path& path) const {
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// TODO(Subv): Implement
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LOG_ERROR(Service_FS, "Unimplemented GetFormatInfo archive %s", GetName().c_str());
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return ResultCode(-1);
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}
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} // namespace FileSys
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