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// Copyright Epic Games, Inc. All Rights Reserved.
#include "zencore/compactbinary.h"
#include "zencore/compactbinarybuilder.h"
#include "zencore/compactbinaryvalue.h"
#include <zencore/assertfmt.h>
#include <zencore/base64.h>
#include <zencore/fmtutils.h>
#include <zencore/string.h>
#include <zencore/testing.h>
#include <fmt/format.h>
#include <string_view>
#include <vector>
ZEN_THIRD_PARTY_INCLUDES_START
#include <ryml.hpp>
#include <ryml_std.hpp>
ZEN_THIRD_PARTY_INCLUDES_END
namespace zen {
//////////////////////////////////////////////////////////////////////////
class CbYamlWriter
{
public:
explicit CbYamlWriter(StringBuilderBase& InBuilder) : m_StrBuilder(InBuilder) { m_NodeStack.push_back(m_Tree.rootref()); }
void WriteField(CbFieldView Field)
{
ryml::NodeRef Node;
if (m_IsFirst)
{
Node = Top();
m_IsFirst = false;
}
else
{
Node = Top().append_child();
}
if (std::u8string_view Name = Field.GetU8Name(); !Name.empty())
{
Node.set_key_serialized(ryml::csubstr((const char*)Name.data(), Name.size()));
}
switch (CbValue Accessor = Field.GetValue(); Accessor.GetType())
{
case CbFieldType::Null:
Node.set_val("null");
break;
case CbFieldType::Object:
case CbFieldType::UniformObject:
Node |= ryml::MAP;
m_NodeStack.push_back(Node);
for (CbFieldView It : Field)
{
WriteField(It);
}
m_NodeStack.pop_back();
break;
case CbFieldType::Array:
case CbFieldType::UniformArray:
Node |= ryml::SEQ;
m_NodeStack.push_back(Node);
for (CbFieldView It : Field)
{
WriteField(It);
}
m_NodeStack.pop_back();
break;
case CbFieldType::Binary:
{
ExtendableStringBuilder<256> Builder;
const MemoryView Value = Accessor.AsBinary();
ZEN_ASSERT(Value.GetSize() <= 512 * 1024 * 1024);
const uint32_t EncodedSize = Base64::GetEncodedDataSize(uint32_t(Value.GetSize()));
const size_t EncodedIndex = Builder.AddUninitialized(size_t(EncodedSize));
Base64::Encode(static_cast<const uint8_t*>(Value.GetData()), uint32_t(Value.GetSize()), Builder.Data() + EncodedIndex);
Node.set_key_serialized(Builder.c_str());
}
break;
case CbFieldType::String:
{
const std::u8string_view U8String = Accessor.AsU8String();
Node.set_val(ryml::csubstr((const char*)U8String.data(), U8String.size()));
}
break;
case CbFieldType::IntegerPositive:
Node << Accessor.AsIntegerPositive();
break;
case CbFieldType::IntegerNegative:
Node << Accessor.AsIntegerNegative();
break;
case CbFieldType::Float32:
if (const float Value = Accessor.AsFloat32(); std::isfinite(Value))
{
Node << Value;
}
else
{
Node << "null";
}
break;
case CbFieldType::Float64:
if (const double Value = Accessor.AsFloat64(); std::isfinite(Value))
{
Node << Value;
}
else
{
Node << "null";
}
break;
case CbFieldType::BoolFalse:
Node << "false";
break;
case CbFieldType::BoolTrue:
Node << "true";
break;
case CbFieldType::ObjectAttachment:
case CbFieldType::BinaryAttachment:
Node << Accessor.AsAttachment().ToHexString();
break;
case CbFieldType::Hash:
Node << Accessor.AsHash().ToHexString();
break;
case CbFieldType::Uuid:
Node << fmt::format("{}", Accessor.AsUuid());
break;
case CbFieldType::DateTime:
Node << DateTime(Accessor.AsDateTimeTicks()).ToIso8601();
break;
case CbFieldType::TimeSpan:
if (const TimeSpan Span(Accessor.AsTimeSpanTicks()); Span.GetDays() == 0)
{
Node << Span.ToString("%h:%m:%s.%n");
}
else
{
Node << Span.ToString("%d.%h:%m:%s.%n");
}
break;
case CbFieldType::ObjectId:
Node << fmt::format("{}", Accessor.AsObjectId());
break;
case CbFieldType::CustomById:
{
CbCustomById Custom = Accessor.AsCustomById();
Node |= ryml::MAP;
ryml::NodeRef IdNode = Node.append_child();
IdNode.set_key("Id");
IdNode.set_val_serialized(fmt::format("{}", Custom.Id));
ryml::NodeRef DataNode = Node.append_child();
DataNode.set_key("Data");
ExtendableStringBuilder<256> Builder;
const MemoryView& Value = Custom.Data;
const uint32_t EncodedSize = Base64::GetEncodedDataSize(uint32_t(Value.GetSize()));
const size_t EncodedIndex = Builder.AddUninitialized(size_t(EncodedSize));
Base64::Encode(static_cast<const uint8_t*>(Value.GetData()), uint32_t(Value.GetSize()), Builder.Data() + EncodedIndex);
DataNode.set_val_serialized(Builder.c_str());
}
break;
case CbFieldType::CustomByName:
{
CbCustomByName Custom = Accessor.AsCustomByName();
Node |= ryml::MAP;
ryml::NodeRef NameNode = Node.append_child();
NameNode.set_key("Name");
std::string_view Name = std::string_view((const char*)Custom.Name.data(), Custom.Name.size());
NameNode.set_val_serialized(std::string(Name));
ryml::NodeRef DataNode = Node.append_child();
DataNode.set_key("Data");
ExtendableStringBuilder<256> Builder;
const MemoryView& Value = Custom.Data;
const uint32_t EncodedSize = Base64::GetEncodedDataSize(uint32_t(Value.GetSize()));
const size_t EncodedIndex = Builder.AddUninitialized(size_t(EncodedSize));
Base64::Encode(static_cast<const uint8_t*>(Value.GetData()), uint32_t(Value.GetSize()), Builder.Data() + EncodedIndex);
DataNode.set_val_serialized(Builder.c_str());
}
break;
default:
ZEN_ASSERT_FORMAT(false, "invalid field type: {}", uint8_t(Accessor.GetType()));
break;
}
if (m_NodeStack.size() == 1)
{
std::string Yaml = ryml::emitrs_yaml<std::string>(m_Tree);
m_StrBuilder << Yaml;
}
}
private:
StringBuilderBase& m_StrBuilder;
bool m_IsFirst = true;
ryml::Tree m_Tree;
std::vector<ryml::NodeRef> m_NodeStack;
ryml::NodeRef& Top() { return m_NodeStack.back(); }
};
void
CompactBinaryToYaml(const CbObjectView& Object, StringBuilderBase& Builder)
{
CbYamlWriter Writer(Builder);
Writer.WriteField(Object.AsFieldView());
}
void
CompactBinaryToYaml(const CbArrayView& Array, StringBuilderBase& Builder)
{
CbYamlWriter Writer(Builder);
Writer.WriteField(Array.AsFieldView());
}
#if ZEN_WITH_TESTS
void
cbyaml_forcelink()
{
}
TEST_CASE("uson.yaml")
{
using namespace std::literals;
SUBCASE("simple")
{
CbObjectWriter Writer;
Writer << "KeyOne"
<< "ValueOne";
Writer << "KeyTwo"
<< "ValueTwo";
CbObject Obj = Writer.Save();
StringBuilder<128> Sb;
CbYamlWriter YamlWriter(Sb);
YamlWriter.WriteField(Obj.AsFieldView());
CHECK_EQ(Sb.ToView(), "KeyOne: ValueOne\nKeyTwo: ValueTwo\n"sv);
}
SUBCASE("scalar_fields")
{
CbObjectWriter Writer;
Writer << "small_int"sv << 10;
Writer << "neg_small_int"sv << -10;
Writer << "small_real"sv << 10.5f;
Writer << "neg_small_real"sv << -10.5f;
Writer.AddNull("null_val"sv);
Writer.AddDateTimeTicks("date"sv, 622'033'000'000'000'000ull);
Writer.AddHash("hash"sv, IoHash::FromHexString("0011223344556677889900112233445566778899"sv));
Writer.AddObjectId("oid"sv, Oid::FromHexString("112233445566778899001122"sv));
Writer.AddTimeSpanTicks("dt"sv, 3'000'000'000'000ull);
Writer.AddUuid("guid"sv, Guid::FromString("E0596ADC-996A-4BA4-ACA3-A2A378AB2796"));
Writer.AddBool("yes"sv, true);
Writer.AddBool("no"sv, false);
CbObject Obj = Writer.Save();
ExtendableStringBuilder<128> Sb;
CbYamlWriter YamlWriter(Sb);
YamlWriter.WriteField(Obj.AsFieldView());
CHECK_EQ(Sb.ToView(),
"small_int: 10\n"
"neg_small_int: -10\n"
"small_real: 10.5\n"
"neg_small_real: -10.5\n"
"null_val: null\n"
"date: '1972-02-23T14:26:40.000Z'\n"
"hash: 0011223344556677889900112233445566778899\n"
"oid: 112233445566778899001122\n"
"dt: '+3.11:20:00.000000000'\n"
"guid: 'e0596adc-996a-4ba4-aca3-a2a378ab2796'\n"
"yes: true\n"
"no: false\n"sv);
}
SUBCASE("complex_fields")
{
CbObjectWriter Writer;
Writer.BeginObject("sub");
Writer.AddBool("no"sv, false);
Writer.BeginObject("sub");
Writer.AddBool("yes"sv, true);
Writer.BeginArray("seq");
Writer.AddInteger(1);
Writer.AddInteger(2);
Writer.AddInteger(3);
Writer.EndArray();
Writer.EndObject();
Writer.EndObject();
Writer.BeginArray("seq");
Writer.AddInteger(1);
Writer.AddInteger(2);
Writer.AddInteger(3);
Writer.EndArray();
Writer.BeginArray("mixed_seq");
Writer.AddInteger(1);
Writer.AddString("hello"sv);
Writer.AddFloat(44.4f);
Writer.BeginObject();
Writer.AddBool("yes"sv, true);
Writer.AddBool("no"sv, false);
Writer.EndObject();
Writer.EndArray();
CbObject Obj = Writer.Save();
ExtendableStringBuilder<128> Sb;
CbYamlWriter YamlWriter(Sb);
YamlWriter.WriteField(Obj.AsFieldView());
CHECK_EQ(Sb.ToView(),
R"(sub:
no: false
sub:
yes: true
seq:
- 1
- 2
- 3
seq:
- 1
- 2
- 3
mixed_seq:
- 1
- hello
- 44.4
- yes: true
no: false
)"sv);
}
}
#endif
} // namespace zen
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