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#pragma once
// Deprecated. Use library/cpp/json/writer in new code.
#include "json_value.h"
#include <library/cpp/json/writer/json.h>
#include <util/stream/output.h>
#include <util/generic/hash.h>
#include <util/generic/maybe.h>
#include <util/generic/strbuf.h>
namespace NJson {
struct TJsonWriterConfig {
constexpr static ui32 DefaultDoubleNDigits = 10;
constexpr static ui32 DefaultFloatNDigits = 6;
constexpr static EFloatToStringMode DefaultFloatToStringMode = PREC_NDIGITS;
inline TJsonWriterConfig& SetUnbuffered(bool v) noexcept {
Unbuffered = v;
return *this;
}
inline TJsonWriterConfig& SetValidateUtf8(bool v) noexcept {
ValidateUtf8 = v;
return *this;
}
inline TJsonWriterConfig& SetFormatOutput(bool v) noexcept {
FormatOutput = v;
return *this;
}
ui32 DoubleNDigits = DefaultDoubleNDigits;
ui32 FloatNDigits = DefaultFloatNDigits;
EFloatToStringMode FloatToStringMode = DefaultFloatToStringMode;
bool FormatOutput = false;
bool SortKeys = false;
bool ValidateUtf8 = true;
bool DontEscapeStrings = false;
bool Unbuffered = false;
bool WriteNanAsString = false; // NaN and Inf are not valid json values, so if WriteNanAsString is set, writer would write string intead of throwing exception (default case)
};
class TJsonWriter {
IOutputStream* Out;
NJsonWriter::TBuf Buf;
const ui32 DoubleNDigits;
const ui32 FloatNDigits;
const EFloatToStringMode FloatToStringMode;
const bool SortKeys;
const bool ValidateUtf8;
const bool DontEscapeStrings;
const bool DontFlushInDestructor;
public:
TJsonWriter(IOutputStream* out, bool formatOutput, bool sortkeys = false, bool validateUtf8 = true);
TJsonWriter(IOutputStream* out, const TJsonWriterConfig& config, bool DontFlushInDestructor = false);
~TJsonWriter();
void Flush();
void OpenMap();
void OpenMap(const TStringBuf& key) {
Buf.WriteKey(key);
OpenMap();
}
void CloseMap();
void OpenArray();
void OpenArray(const TStringBuf& key) {
Buf.WriteKey(key);
OpenArray();
}
void CloseArray();
void WriteNull();
void Write(const TStringBuf& value);
void Write(float value);
void Write(double value);
void Write(bool value);
void Write(const TJsonValue* value);
void Write(const TJsonValue& value);
// must use all variations of integer types since long
// and long long are different types but with same size
void Write(long long value);
void Write(unsigned long long value);
void Write(long value) {
Write((long long)value);
}
void Write(unsigned long value) {
Write((unsigned long long)value);
}
void Write(int value) {
Write((long long)value);
}
void Write(unsigned int value) {
Write((unsigned long long)value);
}
void Write(short value) {
Write((long long)value);
}
void Write(unsigned short value) {
Write((unsigned long long)value);
}
void Write(const unsigned char* value) {
Write((const char*)value);
}
void Write(const char* value) {
Write(TStringBuf(value));
}
void Write(const TString& value) {
Write(TStringBuf(value));
}
void Write(const std::string& value) {
Write(TStringBuf(value));
}
// write raw json without checks
void UnsafeWrite(const TStringBuf& value) {
Buf.UnsafeWriteValue(value);
}
template <typename T>
void Write(const TStringBuf& key, const T& value) {
Buf.WriteKey(key);
Write(value);
}
// write raw json without checks
void UnsafeWrite(const TStringBuf& key, const TStringBuf& value) {
Buf.WriteKey(key);
UnsafeWrite(value);
}
void WriteNull(const TStringBuf& key) {
Buf.WriteKey(key);
WriteNull();
}
template <typename T>
void WriteOptional(const TStringBuf& key, const TMaybe<T>& value) {
if (value) {
Write(key, *value);
}
}
void WriteOptional(const TStringBuf&, const TNothing&) {
// nothing to do
}
void WriteKey(const TStringBuf key) {
Buf.WriteKey(key);
}
void WriteKey(const unsigned char* key) {
WriteKey((const char*)key);
}
void WriteKey(const char* key) {
WriteKey(TStringBuf{key});
}
void WriteKey(const TString& key) {
WriteKey(TStringBuf{key});
}
void WriteKey(const std::string& key) {
WriteKey(TStringBuf{key});
}
NJsonWriter::TBufState State() const {
return Buf.State();
}
void Reset(const NJsonWriter::TBufState& from) {
return Buf.Reset(from);
}
void Reset(NJsonWriter::TBufState&& from) {
return Buf.Reset(std::move(from));
}
};
void WriteJson(IOutputStream*, const TJsonValue*, bool formatOutput = false, bool sortkeys = false, bool validateUtf8 = true);
TString WriteJson(const TJsonValue*, bool formatOutput = true, bool sortkeys = false, bool validateUtf8 = false);
TString WriteJson(const TJsonValue&, bool formatOutput = true, bool sortkeys = false, bool validateUtf8 = false);
void WriteJson(IOutputStream*, const TJsonValue*, const TJsonWriterConfig& config);
}
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