126 lines
4.4 KiB
C++
126 lines
4.4 KiB
C++
// Copyright 2018 yuzu emulator team
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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 "common/common_funcs.h"
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#include "common/swap.h"
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#include "content_archive.h"
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#include "core/file_sys/nca_metadata.h"
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namespace FileSys {
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CNMT::CNMT(VirtualFile file_) : file(std::move(file_)), header(std::make_unique<CNMTHeader>()) {
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if (file->ReadObject(header.get()) != sizeof(CNMTHeader))
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return;
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// If type is {Application, Update, AOC} has opt-header.
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if (static_cast<u8>(header->type) >= 0x80 && static_cast<u8>(header->type) <= 0x82) {
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opt_header = std::make_unique<OptionalHeader>();
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if (file->ReadObject(opt_header.get(), sizeof(CNMTHeader)) != sizeof(OptionalHeader)) {
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opt_header = nullptr;
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}
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}
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for (u16 i = 0; i < header->number_content_entries; ++i) {
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auto& next = content_records.emplace_back(ContentRecord{});
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if (file->ReadObject(&next, sizeof(CNMTHeader) + i * sizeof(ContentRecord) +
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header->table_offset) != sizeof(ContentRecord)) {
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content_records.erase(content_records.end() - 1);
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}
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}
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for (u16 i = 0; i < header->number_meta_entries; ++i) {
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auto& next = meta_records.emplace_back(MetaRecord{});
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if (file->ReadObject(&next, sizeof(CNMTHeader) + i * sizeof(MetaRecord) +
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header->table_offset) != sizeof(MetaRecord)) {
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meta_records.erase(meta_records.end() - 1);
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}
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}
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}
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CNMT::CNMT(CNMTHeader header, OptionalHeader opt_header, std::vector<ContentRecord> content_records,
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std::vector<MetaRecord> meta_records)
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: file(nullptr), header(std::make_unique<CNMTHeader>(std::move(header))),
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opt_header(std::make_unique<OptionalHeader>(std::move(opt_header))),
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content_records(std::move(content_records)), meta_records(std::move(meta_records)) {}
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u64 CNMT::GetTitleID() const {
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return header->title_id;
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}
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u32 CNMT::GetTitleVersion() const {
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return header->title_version;
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}
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TitleType CNMT::GetType() const {
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return header->type;
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}
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const std::vector<ContentRecord>& CNMT::GetContentRecords() const {
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return content_records;
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}
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const std::vector<MetaRecord>& CNMT::GetMetaRecords() const {
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return meta_records;
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}
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bool CNMT::UnionRecords(const CNMT& other) {
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bool change = false;
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for (const auto& rec : other.content_records) {
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const auto iter = std::find_if(
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content_records.begin(), content_records.end(),
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[rec](const ContentRecord& r) { return r.nca_id == rec.nca_id && r.type == rec.type; });
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if (iter == content_records.end()) {
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content_records.emplace_back(rec);
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++header->number_content_entries;
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change = true;
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}
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}
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for (const auto& rec : other.meta_records) {
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const auto iter =
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std::find_if(meta_records.begin(), meta_records.end(), [rec](const MetaRecord& r) {
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return r.title_id == rec.title_id && r.title_version == rec.title_version &&
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r.type == rec.type;
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});
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if (iter == meta_records.end()) {
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meta_records.emplace_back(rec);
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++header->number_meta_entries;
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change = true;
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}
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}
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return change;
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}
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std::vector<u8> CNMT::Serialize() const {
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if (header == nullptr)
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return {};
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std::vector<u8> out(sizeof(CNMTHeader));
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out.reserve(0x100); // Avoid resizing -- average size.
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memcpy(out.data(), header.get(), sizeof(CNMTHeader));
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if (opt_header != nullptr) {
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out.resize(out.size() + sizeof(OptionalHeader));
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memcpy(out.data() + sizeof(CNMTHeader), opt_header.get(), sizeof(OptionalHeader));
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}
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auto offset = header->table_offset;
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const auto dead_zone = offset + sizeof(CNMTHeader) - out.size();
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if (dead_zone > 0)
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out.resize(offset + sizeof(CNMTHeader));
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for (const auto& rec : content_records) {
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out.resize(out.size() + sizeof(ContentRecord));
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memcpy(out.data() + offset + sizeof(CNMTHeader), &rec, sizeof(ContentRecord));
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offset += sizeof(ContentRecord);
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}
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for (const auto& rec : meta_records) {
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out.resize(out.size() + sizeof(MetaRecord));
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memcpy(out.data() + offset + sizeof(CNMTHeader), &rec, sizeof(MetaRecord));
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offset += sizeof(MetaRecord);
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}
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return out;
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}
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} // namespace FileSys
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