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patch_manager: Add support for loading cheats lists
Uses load/<title_id>/<mod_name>/cheats as root dir, file name is all upper or lower hex first 8 bytes build ID.
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2 changed files with 56 additions and 0 deletions
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@ -7,6 +7,7 @@
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#include <cstddef>
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#include <cstring>
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#include "common/file_util.h"
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#include "common/hex_util.h"
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#include "common/logging/log.h"
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#include "core/file_sys/content_archive.h"
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@ -232,6 +233,57 @@ bool PatchManager::HasNSOPatch(const std::array<u8, 32>& build_id_) const {
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return !CollectPatches(patch_dirs, build_id).empty();
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}
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static std::optional<CheatList> ReadCheatFileFromFolder(u64 title_id,
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const std::array<u8, 0x20>& build_id_,
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const VirtualDir& base_path, bool upper) {
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const auto build_id_raw = Common::HexArrayToString(build_id_, upper);
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const auto build_id = build_id_raw.substr(0, sizeof(u64) * 2);
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const auto file = base_path->GetFile(fmt::format("{}.txt", build_id));
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if (file == nullptr) {
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LOG_INFO(Common_Filesystem, "No cheats file found for title_id={:016X}, build_id={}",
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title_id, build_id);
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return std::nullopt;
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}
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std::vector<u8> data(file->GetSize());
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if (file->Read(data.data(), data.size()) != data.size()) {
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LOG_INFO(Common_Filesystem, "Failed to read cheats file for title_id={:016X}, build_id={}",
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title_id, build_id);
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return std::nullopt;
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}
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TextCheatParser parser;
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return parser.Parse(data);
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}
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std::vector<CheatList> PatchManager::CreateCheatList(const std::array<u8, 32>& build_id_) const {
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std::vector<CheatList> out;
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const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
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auto patch_dirs = load_dir->GetSubdirectories();
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std::sort(patch_dirs.begin(), patch_dirs.end(),
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[](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
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out.reserve(patch_dirs.size());
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for (const auto& subdir : patch_dirs) {
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auto cheats_dir = subdir->GetSubdirectory("cheats");
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if (cheats_dir != nullptr) {
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auto res = ReadCheatFileFromFolder(title_id, build_id_, cheats_dir, true);
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if (res.has_value()) {
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out.push_back(std::move(*res));
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continue;
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}
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res = ReadCheatFileFromFolder(title_id, build_id_, cheats_dir, false);
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if (res.has_value())
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out.push_back(std::move(*res));
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}
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}
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return out;
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}
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static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType type) {
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const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
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if ((type != ContentRecordType::Program && type != ContentRecordType::Data) ||
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@ -8,6 +8,7 @@
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#include <memory>
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#include <string>
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#include "common/common_types.h"
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#include "core/file_sys/cheat_engine.h"
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#include "core/file_sys/nca_metadata.h"
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#include "core/file_sys/vfs.h"
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@ -45,6 +46,9 @@ public:
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// Used to prevent expensive copies in NSO loader.
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bool HasNSOPatch(const std::array<u8, 0x20>& build_id) const;
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// Creates a CheatList object with all
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std::vector<CheatList> CreateCheatList(const std::array<u8, 0x20>& build_id) const;
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// Currently tracked RomFS patches:
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// - Game Updates
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// - LayeredFS
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