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#pragma once
#include "string_transform.h"
#include "name_generator.h"
#include <library/cpp/json/json_reader.h>
#include <library/cpp/json/json_value.h>
#include <util/stream/input.h>
#include <util/stream/str.h>
#include <util/stream/mem.h>
namespace google {
namespace protobuf {
class Message;
}
}
namespace NProtobufJson {
struct TJson2ProtoConfig {
using TSelf = TJson2ProtoConfig;
using TValueVectorizer = std::function<NJson::TJsonValue::TArray(const NJson::TJsonValue& jsonValue)>;
enum FldNameMode {
FieldNameOriginalCase = 0, // default
FieldNameLowerCase,
FieldNameUpperCase,
FieldNameCamelCase,
FieldNameSnakeCase, // ABC -> a_b_c, UserID -> user_i_d
FieldNameSnakeCaseDense // ABC -> abc, UserID -> user_id
};
enum EnumValueMode {
EnumCaseSensetive = 0, // default
EnumCaseInsensetive,
EnumSnakeCaseInsensitive
};
TSelf& SetFieldNameMode(FldNameMode mode) {
Y_ENSURE(mode == FieldNameOriginalCase || !UseJsonName, "FieldNameMode and UseJsonName are mutually exclusive");
FieldNameMode = mode;
return *this;
}
TSelf& SetUseJsonName(bool jsonName) {
Y_ENSURE(!jsonName || FieldNameMode == FieldNameOriginalCase, "FieldNameMode and UseJsonName are mutually exclusive");
UseJsonName = jsonName;
return *this;
}
TSelf& AddStringTransform(TStringTransformPtr transform) {
StringTransforms.push_back(transform);
return *this;
}
TSelf& SetCastFromString(bool cast) {
CastFromString = cast;
return *this;
}
TSelf& SetDoNotCastEmptyStrings(bool cast) {
DoNotCastEmptyStrings = cast;
return *this;
}
TSelf& SetCastRobust(bool cast) {
CastRobust = cast;
return *this;
}
TSelf& SetMapAsObject(bool mapAsObject) {
MapAsObject = mapAsObject;
return *this;
}
TSelf& SetReplaceRepeatedFields(bool replaceRepeatedFields) {
ReplaceRepeatedFields = replaceRepeatedFields;
return *this;
}
TSelf& SetNameGenerator(TNameGenerator callback) {
NameGenerator = callback;
return *this;
}
TSelf& SetEnumValueMode(EnumValueMode enumValueMode) {
EnumValueMode = enumValueMode;
return *this;
}
TSelf& SetVectorizeScalars(bool vectorizeScalars) {
VectorizeScalars = vectorizeScalars;
return *this;
}
TSelf& SetAllowComments(bool value) {
AllowComments = value;
return *this;
}
TSelf& SetAllowUnknownFields(bool value) {
AllowUnknownFields = value;
return *this;
}
FldNameMode FieldNameMode = FieldNameOriginalCase;
bool AllowUnknownFields = true;
/// Use 'json_name' protobuf option for field name, mutually exclusive
/// with FieldNameMode.
bool UseJsonName = false;
/// Transforms will be applied only to string values (== protobuf fields of string / bytes type).
TVector<TStringTransformPtr> StringTransforms;
/// Cast string json values to protobuf field type
bool CastFromString = false;
/// Skip empty strings, instead casting from string into scalar types.
/// I.e. empty string like default value for scalar types.
bool DoNotCastEmptyStrings = false;
/// Cast all json values to protobuf field types
bool CastRobust = false;
/// Consider map to be an object, otherwise consider it to be an array of key/value objects
bool MapAsObject = false;
/// Throw exception if there is no required fields in json object.
bool CheckRequiredFields = true;
/// Replace repeated fields content during merging
bool ReplaceRepeatedFields = false;
/// Custom field names generator.
TNameGenerator NameGenerator = {};
/// Enum value parsing mode.
EnumValueMode EnumValueMode = EnumCaseSensetive;
/// Append scalars to repeated fields
bool VectorizeScalars = false;
/// Custom spliter non array value to repeated fields.
TValueVectorizer ValueVectorizer;
/// Allow js-style comments (both // and /**/)
bool AllowComments = false;
};
/// @throw yexception
void MergeJson2Proto(const NJson::TJsonValue& json, google::protobuf::Message& proto,
const TJson2ProtoConfig& config = TJson2ProtoConfig());
/// @throw yexception
void MergeJson2Proto(const TStringBuf& json, google::protobuf::Message& proto,
const TJson2ProtoConfig& config = TJson2ProtoConfig());
/// @throw yexception
inline void MergeJson2Proto(const TString& json, google::protobuf::Message& proto,
const TJson2ProtoConfig& config = TJson2ProtoConfig()) {
MergeJson2Proto(TStringBuf(json), proto, config);
}
/// @throw yexception
void Json2Proto(const NJson::TJsonValue& json, google::protobuf::Message& proto,
const TJson2ProtoConfig& config = TJson2ProtoConfig());
/// @throw yexception
void Json2Proto(const TStringBuf& json, google::protobuf::Message& proto,
const TJson2ProtoConfig& config = TJson2ProtoConfig());
/// @throw yexception
inline void Json2Proto(const TString& json, google::protobuf::Message& proto,
const TJson2ProtoConfig& config = TJson2ProtoConfig()) {
Json2Proto(TStringBuf(json), proto, config);
}
/// @throw yexception
inline void Json2Proto(IInputStream& in, google::protobuf::Message& proto,
const TJson2ProtoConfig& config = TJson2ProtoConfig()) {
Json2Proto(TStringBuf(in.ReadAll()), proto, config);
}
/// @throw yexception
template <typename T>
T Json2Proto(IInputStream& in, const NJson::TJsonReaderConfig& readerConfig,
const TJson2ProtoConfig& config = TJson2ProtoConfig()) {
NJson::TJsonValue jsonValue;
NJson::ReadJsonTree(&in, &readerConfig, &jsonValue, true);
T protoValue;
Json2Proto(jsonValue, protoValue, config);
return protoValue;
}
/// @throw yexception
template <typename T>
T Json2Proto(IInputStream& in, const TJson2ProtoConfig& config = TJson2ProtoConfig()) {
NJson::TJsonReaderConfig readerConfig;
readerConfig.DontValidateUtf8 = true;
return Json2Proto<T>(in, readerConfig, config);
}
/// @throw yexception
template <typename T>
T Json2Proto(const TString& value, const TJson2ProtoConfig& config = TJson2ProtoConfig()) {
TStringInput in(value);
return Json2Proto<T>(in, config);
}
/// @throw yexception
template <typename T>
T Json2Proto(const TStringBuf& value, const TJson2ProtoConfig& config = TJson2ProtoConfig()) {
TMemoryInput in(value);
return Json2Proto<T>(in, config);
}
/// @throw yexception
template <typename T>
T Json2Proto(const char* ptr, const TJson2ProtoConfig& config = TJson2ProtoConfig()) {
return Json2Proto<T>(TStringBuf(ptr), config);
}
}
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