library/cpp/messagebus/key_value_printer.h


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#pragma once 
 
#include <util/generic/string.h>
#include <util/generic/typetraits.h> 
#include <util/generic/vector.h>
#include <util/string/cast.h>
 
class TKeyValuePrinter { 
private: 
    TString Sep;
    TVector<TString> Keys;
    TVector<TString> Values;
    TVector<bool> AlignLefts;

public: 
    TKeyValuePrinter(const TString& sep = TString(": "));
    ~TKeyValuePrinter(); 
 
    template <typename TKey, typename TValue> 
    void AddRow(const TKey& key, const TValue& value, bool leftAlign = !std::is_integral<TValue>::value) {
        return AddRowImpl(ToString(key), ToString(value), leftAlign); 
    } 
 
    TString PrintToString() const;
 
private: 
    void AddRowImpl(const TString& key, const TString& value, bool leftAlign);
};