Files
FlaxEngine/Source/Engine/Content/Storage/JsonStorageProxy.cpp
2025-06-04 23:49:19 +02:00

148 lines
4.2 KiB
C++

// Copyright (c) Wojciech Figat. All rights reserved.
#include "JsonStorageProxy.h"
#include "Engine/Platform/File.h"
#include "Engine/Core/Log.h"
#include "Engine/Core/Utilities.h"
#include "Engine/Serialization/JsonTools.h"
#include "Engine/Serialization/JsonWriters.h"
#include "Engine/Level/Types.h"
#include "Engine/Debug/Exceptions/JsonParseException.h"
#include "Engine/Profiler/ProfilerCPU.h"
#if USE_EDITOR
#include "Engine/Core/Collections/HashSet.h"
#include "Engine/Core/Collections/Dictionary.h"
#endif
#include <ThirdParty/rapidjson/document.h>
bool JsonStorageProxy::IsValidExtension(const StringView& extension)
{
return extension == DEFAULT_SCENE_EXTENSION || extension == DEFAULT_PREFAB_EXTENSION || extension == DEFAULT_JSON_EXTENSION;
}
bool JsonStorageProxy::GetAssetInfo(const StringView& path, Guid& resultId, String& resultDataTypeName)
{
PROFILE_CPU();
// TODO: we could just open file and start reading until we find 'ID:..' without parsing whole file - could be much more faster
// Load file
Array<byte> fileData;
if (File::ReadAllBytes(path, fileData))
{
return false;
}
// Parse data
rapidjson_flax::Document document;
{
PROFILE_CPU_NAMED("Json.Parse");
document.Parse((const char*)fileData.Get(), fileData.Count());
}
if (document.HasParseError())
{
Log::JsonParseException(document.GetParseError(), document.GetErrorOffset(), path);
return false;
}
// Try get asset metadata
auto idNode = document.FindMember("ID");
auto typeNameNode = document.FindMember("TypeName");
if (idNode != document.MemberEnd() && typeNameNode != document.MemberEnd())
{
// Found
resultId = JsonTools::GetGuid(idNode->value);
resultDataTypeName = typeNameNode->value.GetText();
return true;
}
return false;
}
#if USE_EDITOR
void FindObjectIds(const rapidjson_flax::Value& obj, const rapidjson_flax::Document& document, HashSet<Guid>& ids, const char* parentName = nullptr)
{
if (obj.IsObject())
{
for (rapidjson_flax::Value::ConstMemberIterator i = obj.MemberBegin(); i != obj.MemberEnd(); ++i)
{
FindObjectIds(i->value, document, ids, i->name.GetString());
}
}
else if (obj.IsArray())
{
for (rapidjson::SizeType i = 0; i < obj.Size(); i++)
{
FindObjectIds(obj[i], document, ids, parentName);
}
}
else if (obj.IsString() && obj.GetStringLength() == 32)
{
if (parentName && StringUtils::Compare(parentName, "ID") == 0)
{
auto value = JsonTools::GetGuid(obj);
if (value.IsValid())
{
ids.Add(value);
}
}
}
}
#endif
bool JsonStorageProxy::ChangeId(const StringView& path, const Guid& newId)
{
#if USE_EDITOR
PROFILE_CPU();
// Load file
Array<byte> fileData;
if (File::ReadAllBytes(path, fileData))
return false;
// Parse data
rapidjson_flax::Document document;
{
PROFILE_CPU_NAMED("Json.Parse");
document.Parse((const char*)fileData.Get(), fileData.Count());
}
if (document.HasParseError())
{
Log::JsonParseException(document.GetParseError(), document.GetErrorOffset(), path);
return false;
}
// Get all IDs inside the file
HashSet<Guid> ids;
FindObjectIds(document, document, ids);
// Remap into a unique IDs
Dictionary<Guid, Guid> remap;
remap.EnsureCapacity(ids.Count());
for (const auto& id : ids)
remap.Add(id.Item, Guid::New());
// Remap asset ID using the provided value
auto idNode = document.FindMember("ID");
if (idNode == document.MemberEnd())
return true;
remap[JsonTools::GetGuid(idNode->value)] = newId;
// Change IDs of asset and objects inside asset
JsonTools::ChangeIds(document, remap);
// Save to file
rapidjson_flax::StringBuffer buffer;
PrettyJsonWriter writer(buffer);
document.Accept(writer.GetWriter());
if (File::WriteAllBytes(path, (byte*)buffer.GetString(), (int32)buffer.GetSize()))
return true;
return false;
#else
LOG(Warning, "Editing cooked content is invalid.");
return true;
#endif
}