WiiUPluginLoaderBackend/source/utils/StorageUtils.cpp

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#include "StorageUtils.h"
#include <string>
#include "utils/logger.h"
#include "utils/json.hpp"
#include "fs/CFile.hpp"
#include "fs/FSUtils.h"
static void processJson(wups_storage_item_t* items, nlohmann::json json) {
if (items == nullptr) {
return;
}
items->data = (wups_storage_item_t*) malloc(json.size() * sizeof(wups_storage_item_t));
items->data_size = json.size();
uint32_t index = 0;
for (auto it = json.begin(); it != json.end(); ++it) {
wups_storage_item_t* item = &((wups_storage_item_t*) items->data)[index];
item->type = WUPS_STORAGE_TYPE_INVALID;
item->pending_delete = false;
item->data = nullptr;
item->key = nullptr;
item->key = (char*) malloc(it.key().size() + 1);
strcpy(item->key, it.key().c_str());
if (it.value().is_string()) {
item->type = WUPS_STORAGE_TYPE_STRING;
uint32_t size = it.value().get<std::string>().size() + 1;
item->data = malloc(size);
item->data_size = size;
strcpy((char*) item->data, it.value().get<std::string>().c_str());
} else if (it.value().is_number_integer()) {
item->type = WUPS_STORAGE_TYPE_INT;
item->data = malloc(sizeof(int32_t));
item->data_size = sizeof(int32_t);
*(int32_t*) item->data = it.value().get<int32_t>();
} else if (it.value().is_object()) {
if (it.value().size() > 0) {
item->type = WUPS_STORAGE_TYPE_ITEM;
processJson(item, it.value());
}
} else {
DEBUG_FUNCTION_LINE("Unknown type %s for value %s", it.value().type_name(), it.key().c_str());
}
index++;
}
}
int StorageUtils::OpenStorage(const char* plugin_id, wups_storage_item_t* items) {
if (!plugin_id || !items) {
return WUPS_STORAGE_ERROR_INVALID_BACKEND_PARAMS;
}
std::string filePath = std::string("fs:/vol/external01/wiiu/plugins/config/") + plugin_id + ".json";
nlohmann::json j;
CFile file(filePath, CFile::ReadOnly);
if (file.isOpen() && file.size() > 0) {
uint8_t* json_data = new uint8_t[file.size() + 1];
json_data[file.size()] = '\0';
file.read(json_data, file.size());
file.close();
j = nlohmann::json::parse(json_data, nullptr, false);
delete[] json_data;
if (j == nlohmann::detail::value_t::discarded || j.empty() || !j.is_object()) {
return WUPS_STORAGE_ERROR_INVALID_JSON;
}
} else { // empty or no config exists yet
DEBUG_FUNCTION_LINE("open failed");
return WUPS_STORAGE_ERROR_SUCCESS;
}
processJson(items, j["storageitems"]);
return WUPS_STORAGE_ERROR_SUCCESS;
}
static nlohmann::json processItems(wups_storage_item_t* items) {
nlohmann::json json;
if (!items) {
return json;
}
for (uint32_t i = 0; i < items->data_size; i++) {
wups_storage_item_t* item = &((wups_storage_item_t*) items->data)[i];
if (item->pending_delete || item->type == WUPS_STORAGE_TYPE_INVALID || !item->data || !item->key) {
continue;
}
if (item->type == WUPS_STORAGE_TYPE_STRING) {
json[item->key] = (const char*) item->data;
} else if (item->type == WUPS_STORAGE_TYPE_INT) {
json[item->key] = *(int32_t*) item->data;
} else if (item->type == WUPS_STORAGE_TYPE_ITEM) {
json[item->key] = processItems(item);
} else {
DEBUG_FUNCTION_LINE("Saving type %d not implemented", item->type);
}
}
return json;
}
int StorageUtils::CloseStorage(const char* plugin_id, wups_storage_item_t* items) {
if (!plugin_id || !items) {
return WUPS_STORAGE_ERROR_INVALID_BACKEND_PARAMS;
}
std::string folderPath = "fs:/vol/external01/wiiu/plugins/config/";
std::string filePath = folderPath + plugin_id + ".json";
FSUtils::CreateSubfolder(folderPath.c_str());
CFile file(filePath, CFile::WriteOnly);
if (!file.isOpen()) {
DEBUG_FUNCTION_LINE("Cannot create file %s", filePath.c_str());
return WUPS_STORAGE_ERROR_IO;
};
nlohmann::json j;
j["storageitems"] = processItems(items);
std::string jsonString = j.dump(4);
file.write((const uint8_t*) jsonString.c_str(), jsonString.size());
file.close();
return WUPS_STORAGE_ERROR_SUCCESS;
}