mirror of
https://github.com/N64Recomp/N64ModernRuntime.git
synced 2026-05-11 03:12:15 +00:00
634 lines
22 KiB
C++
634 lines
22 KiB
C++
#include <unordered_map>
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#include "json/json.hpp"
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#include "recompiler/context.h"
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#include "librecomp/mods.hpp"
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recomp::mods::ZipModFileHandle::~ZipModFileHandle() {
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if (file_handle) {
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fclose(file_handle);
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file_handle = nullptr;
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}
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if (archive) {
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mz_zip_reader_end(archive.get());
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}
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archive = {};
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}
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recomp::mods::ZipModFileHandle::ZipModFileHandle(const std::filesystem::path& mod_path, ModOpenError& error) {
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#ifdef _WIN32
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if (_wfopen_s(&file_handle, mod_path.c_str(), L"rb") != 0) {
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error = ModOpenError::FileError;
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return;
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}
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#else
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file_handle = fopen(mod_path.c_str(), "rb");
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if (!file_handle) {
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error = ModOpenError::FileError;
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return;
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}
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#endif
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archive = std::make_unique<mz_zip_archive>();
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if (!mz_zip_reader_init_cfile(archive.get(), file_handle, 0, 0)) {
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error = ModOpenError::InvalidZip;
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return;
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}
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error = ModOpenError::Good;
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}
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std::vector<char> recomp::mods::ZipModFileHandle::read_file(const std::string& filepath, bool& exists) const {
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std::vector<char> ret{};
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mz_uint32 file_index;
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if (!mz_zip_reader_locate_file_v2(archive.get(), filepath.c_str(), nullptr, MZ_ZIP_FLAG_CASE_SENSITIVE, &file_index)) {
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exists = false;
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return ret;
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}
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mz_zip_archive_file_stat stat;
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if (!mz_zip_reader_file_stat(archive.get(), file_index, &stat)) {
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exists = false;
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return ret;
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}
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ret.resize(stat.m_uncomp_size);
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if (!mz_zip_reader_extract_to_mem(archive.get(), file_index, ret.data(), ret.size(), 0)) {
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exists = false;
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return {};
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}
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exists = true;
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return ret;
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}
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bool recomp::mods::ZipModFileHandle::file_exists(const std::string& filepath) const {
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mz_uint32 file_index;
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if (!mz_zip_reader_locate_file_v2(archive.get(), filepath.c_str(), nullptr, MZ_ZIP_FLAG_CASE_SENSITIVE, &file_index)) {
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return false;
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}
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return true;
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}
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recomp::mods::LooseModFileHandle::~LooseModFileHandle() {
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// Nothing to do here, members will be destroyed automatically.
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}
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recomp::mods::LooseModFileHandle::LooseModFileHandle(const std::filesystem::path& mod_path, ModOpenError& error) {
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root_path = mod_path;
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std::error_code ec;
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if (!std::filesystem::is_directory(root_path, ec)) {
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error = ModOpenError::NotAFileOrFolder;
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}
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if (ec) {
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error = ModOpenError::FileError;
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}
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error = ModOpenError::Good;
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}
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std::vector<char> recomp::mods::LooseModFileHandle::read_file(const std::string& filepath, bool& exists) const {
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std::vector<char> ret{};
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std::filesystem::path full_path = root_path / filepath;
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std::error_code ec;
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if (!std::filesystem::is_regular_file(full_path, ec) || ec) {
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exists = false;
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return ret;
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}
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std::ifstream file{ full_path, std::ios::binary };
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if (!file.good()) {
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exists = false;
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return ret;
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}
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file.seekg(0, std::ios::end);
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size_t file_size = file.tellg();
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file.seekg(0, std::ios::beg);
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ret.resize(file_size);
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file.read(ret.data(), ret.size());
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exists = true;
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return ret;
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}
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bool recomp::mods::LooseModFileHandle::file_exists(const std::string& filepath) const {
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std::filesystem::path full_path = root_path / filepath;
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std::error_code ec;
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if (!std::filesystem::is_regular_file(full_path, ec) || ec) {
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return false;
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}
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return true;
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}
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enum class ManifestField {
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GameModId,
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Id,
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Version,
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Authors,
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MinimumRecompVersion,
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Dependencies,
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NativeLibraries,
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};
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const std::string game_mod_id_key = "game_id";
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const std::string mod_id_key = "id";
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const std::string display_name_key = "display_name";
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const std::string description_key = "description";
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const std::string short_description_key = "short_description";
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const std::string version_key = "version";
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const std::string authors_key = "authors";
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const std::string minimum_recomp_version_key = "minimum_recomp_version";
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const std::string dependencies_key = "dependencies";
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const std::string native_libraries_key = "native_libraries";
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std::unordered_map<std::string, ManifestField> field_map {
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{ game_mod_id_key, ManifestField::GameModId },
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{ mod_id_key, ManifestField::Id },
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{ version_key, ManifestField::Version },
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{ authors_key, ManifestField::Authors },
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{ minimum_recomp_version_key, ManifestField::MinimumRecompVersion },
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{ dependencies_key, ManifestField::Dependencies },
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{ native_libraries_key, ManifestField::NativeLibraries },
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};
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template <typename T1, typename T2>
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bool get_to(const nlohmann::json& val, T2& out) {
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const T1* ptr = val.get_ptr<const T1*>();
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if (ptr == nullptr) {
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return false;
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}
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out = *ptr;
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return true;
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}
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template <typename T1, typename T2>
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bool get_to_vec(const nlohmann::json& val, std::vector<T2>& out) {
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const nlohmann::json::array_t* ptr = val.get_ptr<const nlohmann::json::array_t*>();
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if (ptr == nullptr) {
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return false;
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}
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out.clear();
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for (const nlohmann::json& cur_val : *ptr) {
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const T1* temp_ptr = cur_val.get_ptr<const T1*>();
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if (temp_ptr == nullptr) {
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out.clear();
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return false;
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}
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out.emplace_back(*temp_ptr);
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}
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return true;
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}
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static bool parse_dependency(const std::string& val, recomp::mods::Dependency& out) {
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recomp::mods::Dependency ret;
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bool validated_name;
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bool validated_version;
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// Check if there's a version number specified.
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size_t colon_pos = val.find(':');
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if (colon_pos == std::string::npos) {
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// No version present, so just validate the dependency's id.
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validated_name = N64Recomp::validate_mod_id(std::string_view{val});
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ret.mod_id = val;
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validated_version = true;
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ret.version.minor = 0;
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ret.version.major = 0;
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ret.version.patch = 0;
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}
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else {
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// Version present, validate both the id and version.
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ret.mod_id = val.substr(0, colon_pos);
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validated_name = N64Recomp::validate_mod_id(ret.mod_id);
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validated_version = recomp::Version::from_string(val.substr(colon_pos + 1), ret.version);
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}
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if (validated_name && validated_version) {
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out = std::move(ret);
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return true;
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}
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return false;
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}
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template <typename T1, typename T2>
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recomp::mods::ModOpenError try_get(T2& out, const nlohmann::json& data, const std::string& key, bool required, std::string& error_param) {
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auto find_it = data.find(key);
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if (find_it == data.end()) {
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if (required) {
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error_param = key;
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return recomp::mods::ModOpenError::MissingManifestField;
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}
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out = {};
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return recomp::mods::ModOpenError::Good;
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}
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const T1* ptr = find_it->get_ptr<const T1*>();
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if (ptr == nullptr) {
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error_param = key;
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return recomp::mods::ModOpenError::IncorrectManifestFieldType;
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}
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out = *ptr;
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return recomp::mods::ModOpenError::Good;
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}
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recomp::mods::ModOpenError try_get_version(recomp::Version& out, const nlohmann::json& data, const std::string& key, std::string& error_param, recomp::mods::ModOpenError invalid_version_error) {
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std::string version_string{};
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recomp::mods::ModOpenError try_get_err = try_get<nlohmann::json::string_t>(version_string, data, key, true, error_param);
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if (try_get_err != recomp::mods::ModOpenError::Good) {
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return try_get_err;
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}
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if (!recomp::Version::from_string(version_string, out)) {
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error_param = version_string;
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return invalid_version_error;
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}
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return recomp::mods::ModOpenError::Good;
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}
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template <typename T1, typename T2>
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recomp::mods::ModOpenError try_get_vec(std::vector<T2>& out, const nlohmann::json& data, const std::string& key, bool required, std::string& error_param) {
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auto find_it = data.find(key);
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if (find_it == data.end()) {
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if (required) {
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error_param = key;
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return recomp::mods::ModOpenError::MissingManifestField;
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}
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return recomp::mods::ModOpenError::Good;
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}
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const nlohmann::json::array_t* ptr = find_it->get_ptr<const nlohmann::json::array_t*>();
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if (ptr == nullptr) {
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error_param = key;
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return recomp::mods::ModOpenError::IncorrectManifestFieldType;
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}
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out.clear();
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for (const nlohmann::json& cur_val : *ptr) {
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const T1* temp_ptr = cur_val.get_ptr<const T1*>();
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if (temp_ptr == nullptr) {
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out.clear();
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error_param = key;
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return recomp::mods::ModOpenError::IncorrectManifestFieldType;
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}
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out.emplace_back(*temp_ptr);
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}
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return recomp::mods::ModOpenError::Good;
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}
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recomp::mods::ModOpenError parse_manifest(recomp::mods::ModManifest& ret, const std::vector<char>& manifest_data, std::string& error_param) {
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using json = nlohmann::json;
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json manifest_json = json::parse(manifest_data.begin(), manifest_data.end(), nullptr, false);
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if (manifest_json.is_discarded()) {
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return recomp::mods::ModOpenError::FailedToParseManifest;
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}
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if (!manifest_json.is_object()) {
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return recomp::mods::ModOpenError::InvalidManifestSchema;
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}
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recomp::mods::ModOpenError current_error = recomp::mods::ModOpenError::Good;
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// Mod Game ID
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std::string mod_game_id{};
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current_error = try_get<json::string_t>(mod_game_id, manifest_json, game_mod_id_key, true, error_param);
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if (current_error != recomp::mods::ModOpenError::Good) {
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return current_error;
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}
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ret.mod_game_ids.emplace_back(std::move(mod_game_id));
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// Mod ID
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current_error = try_get<json::string_t>(ret.mod_id, manifest_json, mod_id_key, true, error_param);
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if (current_error != recomp::mods::ModOpenError::Good) {
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return current_error;
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}
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// Display name
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current_error = try_get<json::string_t>(ret.display_name, manifest_json, display_name_key, true, error_param);
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if (current_error != recomp::mods::ModOpenError::Good) {
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return current_error;
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}
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// Description (optional)
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current_error = try_get<json::string_t>(ret.description, manifest_json, description_key, false, error_param);
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if (current_error != recomp::mods::ModOpenError::Good) {
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return current_error;
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}
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// Short Description (optional)
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current_error = try_get<json::string_t>(ret.short_description, manifest_json, short_description_key, false, error_param);
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if (current_error != recomp::mods::ModOpenError::Good) {
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return current_error;
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}
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// Version
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current_error = try_get_version(ret.version, manifest_json, version_key, error_param, recomp::mods::ModOpenError::InvalidVersionString);
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if (current_error != recomp::mods::ModOpenError::Good) {
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return current_error;
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}
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// Authors
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current_error = try_get_vec<json::string_t>(ret.authors, manifest_json, authors_key, true, error_param);
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if (current_error != recomp::mods::ModOpenError::Good) {
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return current_error;
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}
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// Minimum recomp version
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current_error = try_get_version(ret.minimum_recomp_version, manifest_json, minimum_recomp_version_key, error_param, recomp::mods::ModOpenError::InvalidMinimumRecompVersionString);
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if (current_error != recomp::mods::ModOpenError::Good) {
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return current_error;
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}
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// Dependencies (optional)
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std::vector<std::string> dep_strings{};
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current_error = try_get_vec<json::string_t>(dep_strings, manifest_json, dependencies_key, false, error_param);
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if (current_error != recomp::mods::ModOpenError::Good) {
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return current_error;
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}
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for (const std::string& dep_string : dep_strings) {
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recomp::mods::Dependency cur_dep;
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if (!parse_dependency(dep_string, cur_dep)) {
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error_param = dep_string;
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return recomp::mods::ModOpenError::InvalidDependencyString;
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}
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size_t dependency_index = ret.dependencies.size();
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ret.dependencies_by_id.emplace(cur_dep.mod_id, dependency_index);
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ret.dependencies.emplace_back(std::move(cur_dep));
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}
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// Native libraries (optional)
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auto find_libs_it = manifest_json.find(native_libraries_key);
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if (find_libs_it != manifest_json.end()) {
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auto& val = *find_libs_it;
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if (!val.is_object()) {
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error_param = native_libraries_key;
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return recomp::mods::ModOpenError::IncorrectManifestFieldType;
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}
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for (const auto& [lib_name, lib_exports] : val.items()) {
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recomp::mods::NativeLibraryManifest& cur_lib = ret.native_libraries.emplace_back();
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cur_lib.name = lib_name;
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if (!get_to_vec<std::string>(lib_exports, cur_lib.exports)) {
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error_param = native_libraries_key;
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return recomp::mods::ModOpenError::IncorrectManifestFieldType;
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}
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}
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}
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return recomp::mods::ModOpenError::Good;
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}
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recomp::mods::ModOpenError recomp::mods::ModContext::open_mod(const std::filesystem::path& mod_path, std::string& error_param, const std::vector<ModContentTypeId>& supported_content_types, bool requires_manifest) {
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ModManifest manifest{};
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std::error_code ec;
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error_param = "";
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if (!std::filesystem::exists(mod_path, ec) || ec) {
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return ModOpenError::DoesNotExist;
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}
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// TODO support symlinks?
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bool is_file = std::filesystem::is_regular_file(mod_path, ec);
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if (ec) {
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return ModOpenError::FileError;
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}
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bool is_directory = std::filesystem::is_directory(mod_path, ec);
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if (ec) {
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return ModOpenError::FileError;
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}
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// Load the directory or zip file.
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ModOpenError handle_error;
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if (is_file) {
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manifest.file_handle = std::make_unique<recomp::mods::ZipModFileHandle>(mod_path, handle_error);
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}
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else if (is_directory) {
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manifest.file_handle = std::make_unique<recomp::mods::LooseModFileHandle>(mod_path, handle_error);
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}
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else {
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return ModOpenError::NotAFileOrFolder;
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}
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if (handle_error != ModOpenError::Good) {
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return handle_error;
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}
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{
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bool exists;
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std::vector<char> manifest_data = manifest.file_handle->read_file("mod.json", exists);
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if (!exists) {
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// If this container type requires a manifest then return an error.
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if (requires_manifest) {
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return ModOpenError::NoManifest;
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}
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// Otherwise, create a default manifest.
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else {
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// Take the file handle from the manifest before clearing it so that it can be reassigned afterwards.
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std::unique_ptr<ModFileHandle> file_handle = std::move(manifest.file_handle);
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manifest = {};
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manifest.file_handle = std::move(file_handle);
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for (const auto& [key, val] : mod_game_ids) {
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manifest.mod_game_ids.emplace_back(key);
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}
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manifest.mod_id = mod_path.stem().string();
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manifest.authors = { "Unknown" };
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manifest.minimum_recomp_version.major = 0;
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manifest.minimum_recomp_version.minor = 0;
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manifest.minimum_recomp_version.patch = 0;
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manifest.version.major = 0;
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manifest.version.minor = 0;
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manifest.version.patch = 0;
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}
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}
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else {
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ModOpenError parse_error = parse_manifest(manifest, manifest_data, error_param);
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if (parse_error != ModOpenError::Good) {
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return parse_error;
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}
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}
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}
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// Check for this being a duplicate of another opened mod.
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if (mod_ids.contains(manifest.mod_id)) {
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error_param = manifest.mod_id;
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return ModOpenError::DuplicateMod;
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}
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mod_ids.emplace(manifest.mod_id);
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// Check for this mod's game ids being valid.
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std::vector<size_t> game_indices;
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for (const auto& mod_game_id : manifest.mod_game_ids) {
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auto find_id_it = mod_game_ids.find(mod_game_id);
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if (find_id_it == mod_game_ids.end()) {
|
|
error_param = mod_game_id;
|
|
return ModOpenError::WrongGame;
|
|
}
|
|
game_indices.emplace_back(find_id_it->second);
|
|
}
|
|
|
|
// Scan for content types present in this mod.
|
|
std::vector<ModContentTypeId> detected_content_types;
|
|
|
|
auto scan_for_content_type = [&detected_content_types, &manifest](ModContentTypeId type_id, std::vector<ModContentType>& content_types) {
|
|
const ModContentType& content_type = content_types[type_id.value];
|
|
if (manifest.file_handle->file_exists(content_type.content_filename)) {
|
|
detected_content_types.emplace_back(type_id);
|
|
}
|
|
};
|
|
|
|
// If the mod has a list of specific content types, scan for only those.
|
|
if (!supported_content_types.empty()) {
|
|
for (ModContentTypeId content_type_id : supported_content_types) {
|
|
scan_for_content_type(content_type_id, content_types);
|
|
}
|
|
}
|
|
// Otherwise, scan for all content types.
|
|
else {
|
|
for (size_t content_type_index = 0; content_type_index < content_types.size(); content_type_index++) {
|
|
scan_for_content_type(ModContentTypeId{.value = content_type_index}, content_types);
|
|
}
|
|
}
|
|
|
|
// Store the loaded mod manifest in a new mod handle.
|
|
manifest.mod_root_path = mod_path;
|
|
add_opened_mod(std::move(manifest), std::move(game_indices), std::move(detected_content_types));
|
|
|
|
return ModOpenError::Good;
|
|
}
|
|
|
|
std::string recomp::mods::error_to_string(ModOpenError error) {
|
|
switch (error) {
|
|
case ModOpenError::Good:
|
|
return "Good";
|
|
case ModOpenError::DoesNotExist:
|
|
return "Mod does not exist";
|
|
case ModOpenError::NotAFileOrFolder:
|
|
return "Mod is not a file or folder";
|
|
case ModOpenError::FileError:
|
|
return "Error reading mod file(s)";
|
|
case ModOpenError::InvalidZip:
|
|
return "Mod is an invalid zip file";
|
|
case ModOpenError::NoManifest:
|
|
return "Mod is missing a mod.json";
|
|
case ModOpenError::FailedToParseManifest:
|
|
return "Failed to parse mod's mod.json";
|
|
case ModOpenError::InvalidManifestSchema:
|
|
return "Mod's mod.json has an invalid schema";
|
|
case ModOpenError::IncorrectManifestFieldType:
|
|
return "Incorrect type for field in mod.json";
|
|
case ModOpenError::InvalidVersionString:
|
|
return "Invalid version string in mod.json";
|
|
case ModOpenError::InvalidMinimumRecompVersionString:
|
|
return "Invalid minimum recomp version string in mod.json";
|
|
case ModOpenError::InvalidDependencyString:
|
|
return "Invalid dependency string in mod.json";
|
|
case ModOpenError::MissingManifestField:
|
|
return "Missing required field in mod.json";
|
|
case ModOpenError::DuplicateMod:
|
|
return "Duplicate mod found";
|
|
case ModOpenError::WrongGame:
|
|
return "Mod is for a different game";
|
|
}
|
|
return "Unknown mod opening error: " + std::to_string((int)error);
|
|
}
|
|
|
|
std::string recomp::mods::error_to_string(ModLoadError error) {
|
|
switch (error) {
|
|
case ModLoadError::Good:
|
|
return "Good";
|
|
case ModLoadError::InvalidGame:
|
|
return "Invalid game";
|
|
case ModLoadError::MinimumRecompVersionNotMet:
|
|
return "Mod requires a newer version of this project";
|
|
case ModLoadError::MissingDependency:
|
|
return "Missing dependency";
|
|
case ModLoadError::WrongDependencyVersion:
|
|
return "Wrong dependency version";
|
|
case ModLoadError::FailedToLoadCode:
|
|
return "Failed to load mod code";
|
|
}
|
|
return "Unknown mod loading error " + std::to_string((int)error);
|
|
}
|
|
|
|
std::string recomp::mods::error_to_string(CodeModLoadError error) {
|
|
switch (error) {
|
|
case CodeModLoadError::Good:
|
|
return "Good";
|
|
case CodeModLoadError::InternalError:
|
|
return "Code mod loading internal error";
|
|
case CodeModLoadError::HasSymsButNoBinary:
|
|
return "Mod has a symbol file but no binary file";
|
|
case CodeModLoadError::HasBinaryButNoSyms:
|
|
return "Mod has a binary file but no symbol file";
|
|
case CodeModLoadError::FailedToParseSyms:
|
|
return "Failed to parse mod symbol file";
|
|
case CodeModLoadError::MissingDependencyInManifest:
|
|
return "Dependency is present in mod symbols but not in the manifest";
|
|
case CodeModLoadError::FailedToLoadNativeCode:
|
|
return "Failed to load offline mod library";
|
|
case CodeModLoadError::FailedToLoadNativeLibrary:
|
|
return "Failed to load mod library";
|
|
case CodeModLoadError::FailedToFindNativeExport:
|
|
return "Failed to find native export";
|
|
case CodeModLoadError::FailedToRecompile:
|
|
return "Failed to recompile mod";
|
|
case CodeModLoadError::InvalidReferenceSymbol:
|
|
return "Reference symbol does not exist";
|
|
case CodeModLoadError::InvalidImport:
|
|
return "Imported function not found";
|
|
case CodeModLoadError::InvalidCallbackEvent:
|
|
return "Event for callback not found";
|
|
case CodeModLoadError::InvalidFunctionReplacement:
|
|
return "Function to be replaced does not exist";
|
|
case CodeModLoadError::HooksUnavailable:
|
|
// This error will occur if the ROM's GameEntry is set as having compressed code, but no
|
|
// ROM decompression routine has been provided.
|
|
return "Function hooks are currently unavailable in this project";
|
|
case CodeModLoadError::InvalidHook:
|
|
return "Function to be hooked does not exist";
|
|
case CodeModLoadError::CannotBeHooked:
|
|
return "Function is not hookable";
|
|
case CodeModLoadError::FailedToFindReplacement:
|
|
return "Failed to find replacement function";
|
|
case CodeModLoadError::BaseRecompConflict:
|
|
return "Attempted to replace a function that's been patched by the base recomp";
|
|
case CodeModLoadError::ModConflict:
|
|
return "Conflicts with other mod";
|
|
case CodeModLoadError::DuplicateExport:
|
|
return "Duplicate exports in mod";
|
|
case CodeModLoadError::OfflineModHooked:
|
|
return "Offline recompiled mod has a function hooked by another mod";
|
|
case CodeModLoadError::NoSpecifiedApiVersion:
|
|
return "Mod DLL does not specify an API version";
|
|
case CodeModLoadError::UnsupportedApiVersion:
|
|
return "Mod DLL has an unsupported API version";
|
|
}
|
|
}
|