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#pragma once
#include <util/stream/input.h>
#include <util/stream/output.h>
#include <util/generic/vector.h>
namespace NYql {
namespace NUtils {
///////////////////////////////////////////////////////////////////////////////
// TCsvInputStream
///////////////////////////////////////////////////////////////////////////////
class TCsvInputStream {
public:
TCsvInputStream(IInputStream& slave, char delimiter = ';');
TVector<TString> ReadLine();
TVector<TString> ReadLineWithEscaping();
private:
IInputStream& Slave_;
const char Delim_;
};
///////////////////////////////////////////////////////////////////////////////
// TCsvInputBuffer
///////////////////////////////////////////////////////////////////////////////
class TCsvInputBuffer {
public:
TCsvInputBuffer(const TStringBuf& buffer, char delimiter = ';');
TVector<TString> ReadLine();
TVector<TString> ReadLineWithEscaping();
private:
TStringBuf Buffer_;
const char Delim_;
};
///////////////////////////////////////////////////////////////////////////////
// TCsvOutputStream
///////////////////////////////////////////////////////////////////////////////
class TCsvOutputStream: public IOutputStream {
public:
TCsvOutputStream(IOutputStream& slave, char delimiter = ';', bool quoteItems = true);
// hack for output empty values
inline TCsvOutputStream& operator<<(const TString& value) {
DoWrite(value.data(), value.size());
return *this;
}
// hack for output empty values
inline TCsvOutputStream& operator<<(const char* value) {
DoWrite(value, strlen(value));
return *this;
}
inline TCsvOutputStream& operator<<(const TVector<TString>& values) {
for(const TString& value: values) {
(*this) << value;
}
(*this) << Endl;
return *this;
}
private:
void DoWrite(const void* buf, size_t len) override final;
void DoFlush() override;
private:
IOutputStream& Slave_;
bool WasNL_;
const char Delim_;
const bool QuoteItems_;
};
} // namspace NUtils
} // namspace NYql
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