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patch_manager: Add support for loading cheats lists

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Uses load/<title_id>/<mod_name>/cheats as root dir, file name is all upper or lower hex first 8 bytes build ID.
This commit is contained in:
Zach Hilman 2018-12-22 21:28:56 -05:00
parent 9d1ab766a0
commit c5091bfe00
2 changed files with 56 additions and 0 deletions
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52
src/core/file_sys/patch_manager.cpp
View File

@ -7,6 +7,7 @@
#include <cstddef>
#include <cstring>
#include "common/file_util.h"
#include "common/hex_util.h"
#include "common/logging/log.h"
#include "core/file_sys/content_archive.h"
@ -232,6 +233,57 @@ bool PatchManager::HasNSOPatch(const std::array<u8, 32>& build_id_) const {
return !CollectPatches(patch_dirs, build_id).empty();
}
static std::optional<CheatList> ReadCheatFileFromFolder(u64 title_id,
const std::array<u8, 0x20>& build_id_,
const VirtualDir& base_path, bool upper) {
const auto build_id_raw = Common::HexArrayToString(build_id_, upper);
const auto build_id = build_id_raw.substr(0, sizeof(u64) * 2);
const auto file = base_path->GetFile(fmt::format("{}.txt", build_id));
if (file == nullptr) {
LOG_INFO(Common_Filesystem, "No cheats file found for title_id={:016X}, build_id={}",
title_id, build_id);
return std::nullopt;
}
std::vector<u8> data(file->GetSize());
if (file->Read(data.data(), data.size()) != data.size()) {
LOG_INFO(Common_Filesystem, "Failed to read cheats file for title_id={:016X}, build_id={}",
title_id, build_id);
return std::nullopt;
}
TextCheatParser parser;
return parser.Parse(data);
}
std::vector<CheatList> PatchManager::CreateCheatList(const std::array<u8, 32>& build_id_) const {
std::vector<CheatList> out;
const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
auto patch_dirs = load_dir->GetSubdirectories();
std::sort(patch_dirs.begin(), patch_dirs.end(),
[](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
out.reserve(patch_dirs.size());
for (const auto& subdir : patch_dirs) {
auto cheats_dir = subdir->GetSubdirectory("cheats");
if (cheats_dir != nullptr) {
auto res = ReadCheatFileFromFolder(title_id, build_id_, cheats_dir, true);
if (res.has_value()) {
out.push_back(std::move(*res));
continue;
}
res = ReadCheatFileFromFolder(title_id, build_id_, cheats_dir, false);
if (res.has_value())
out.push_back(std::move(*res));
}
}
return out;
}
static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType type) {
const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
if ((type != ContentRecordType::Program && type != ContentRecordType::Data) ||

4
src/core/file_sys/patch_manager.h
View File

@ -8,6 +8,7 @@
#include <memory>
#include <string>
#include "common/common_types.h"
#include "core/file_sys/cheat_engine.h"
#include "core/file_sys/nca_metadata.h"
#include "core/file_sys/vfs.h"
@ -45,6 +46,9 @@ public:
// Used to prevent expensive copies in NSO loader.
bool HasNSOPatch(const std::array<u8, 0x20>& build_id) const;
// Creates a CheatList object with all
std::vector<CheatList> CreateCheatList(const std::array<u8, 0x20>& build_id) const;
// Currently tracked RomFS patches:
// - Game Updates
// - LayeredFS