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#pragma once
#include <library/cpp/string_utils/relaxed_escaper/relaxed_escaper.h>
#include <util/generic/ptr.h>
#include <util/generic/refcount.h>
namespace NProtobufJson {
class IStringTransform: public TSimpleRefCount<IStringTransform> {
public:
virtual ~IStringTransform() {
}
/// Some transforms have special meaning.
/// For example, escape transforms cause generic JSON escaping to be turned off.
enum Type {
EscapeTransform = 0x1,
};
virtual int GetType() const = 0;
/// This method is called for each string field in proto
virtual void Transform(TString& str) const = 0;
/// This method is called for each bytes field in proto
virtual void TransformBytes(TString& str) const {
// Default behaviour is to apply string transform
return Transform(str);
}
};
using TStringTransformPtr = TIntrusivePtr<IStringTransform>;
template <bool quote, bool tounicode>
class TEscapeJTransform: public IStringTransform {
public:
int GetType() const override {
return EscapeTransform;
}
void Transform(TString& str) const override {
TString newStr;
NEscJ::EscapeJ<quote, tounicode>(str, newStr);
str = newStr;
}
};
class TCEscapeTransform: public IStringTransform {
public:
int GetType() const override {
return EscapeTransform;
}
void Transform(TString& str) const override;
};
class TSafeUtf8CEscapeTransform: public IStringTransform {
public:
int GetType() const override {
return EscapeTransform;
}
void Transform(TString& str) const override;
};
class TDoubleEscapeTransform: public IStringTransform {
public:
int GetType() const override {
return EscapeTransform;
}
void Transform(TString& str) const override;
};
class TDoubleUnescapeTransform: public NProtobufJson::IStringTransform {
public:
int GetType() const override {
return NProtobufJson::IStringTransform::EscapeTransform;
}
void Transform(TString& str) const override;
private:
TString Unescape(const TString& str) const;
};
class TBase64EncodeBytesTransform: public NProtobufJson::IStringTransform {
public:
int GetType() const override {
return 0;
}
void Transform(TString&) const override {
// Do not transform strings
}
void TransformBytes(TString &str) const override;
};
class TBase64DecodeBytesTransform: public NProtobufJson::IStringTransform {
public:
int GetType() const override {
return 0;
}
void Transform(TString&) const override {
// Do not transform strings
}
void TransformBytes(TString &str) const override;
};
}
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