mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-17 21:24:28 +00:00
504 lines
12 KiB
C++
504 lines
12 KiB
C++
#pragma once
|
||
|
||
#include <cstring>
|
||
#include <iostream>
|
||
|
||
#include <mysqlxx/Types.h>
|
||
#include <mysqlxx/Row.h>
|
||
#include <mysqlxx/Null.h>
|
||
|
||
|
||
namespace mysqlxx
|
||
{
|
||
|
||
/** @brief Манипулятор ostream, который escape-ит строки для записи в tab delimited файл.
|
||
* Использование: tab_separated_ostr << mysqlxx::escape << x;
|
||
*/
|
||
enum escape_enum
|
||
{
|
||
escape
|
||
};
|
||
|
||
|
||
/** @brief Манипулятор ostream, который quote-ит строки для записи в MySQL запрос.
|
||
* Внимание! Не использует функции MySQL API, а использует свой метод quote-инга,
|
||
* который может быть некорректным при использовании некоторых кодировок
|
||
* (multi-byte attack), а также может оказаться некорректным при изменении libmysqlclient.
|
||
* Это сделано для увеличения производительности и это имеет значение.
|
||
*
|
||
* Использование: query << mysqlxx::quote << x;
|
||
*/
|
||
enum quote_enum
|
||
{
|
||
quote
|
||
};
|
||
|
||
|
||
struct EscapeManipResult
|
||
{
|
||
std::ostream & ostr;
|
||
|
||
EscapeManipResult(std::ostream & ostr_) : ostr(ostr_) {}
|
||
|
||
std::ostream & operator<< (bool value) { return ostr << static_cast<int>(value); }
|
||
std::ostream & operator<< (char value) { return ostr << static_cast<int>(value); }
|
||
std::ostream & operator<< (unsigned char value) { return ostr << static_cast<int>(value); }
|
||
std::ostream & operator<< (signed char value) { return ostr << static_cast<int>(value); }
|
||
std::ostream & operator<< (short value) { return ostr << value; }
|
||
std::ostream & operator<< (unsigned short value) { return ostr << value; }
|
||
std::ostream & operator<< (int value) { return ostr << value; }
|
||
std::ostream & operator<< (unsigned int value) { return ostr << value; }
|
||
std::ostream & operator<< (long value) { return ostr << value; }
|
||
std::ostream & operator<< (unsigned long value) { return ostr << value; }
|
||
std::ostream & operator<< (float value) { return ostr << value; }
|
||
std::ostream & operator<< (double value) { return ostr << value; }
|
||
std::ostream & operator<< (long long value) { return ostr << value; }
|
||
std::ostream & operator<< (unsigned long long value) { return ostr << value; }
|
||
std::ostream & operator<< (Date value) { return ostr << value; }
|
||
std::ostream & operator<< (DateTime value) { return ostr << value; }
|
||
|
||
std::ostream & operator<< (const std::string & value)
|
||
{
|
||
writeEscapedData(value.data(), value.length());
|
||
return ostr;
|
||
}
|
||
|
||
|
||
std::ostream & operator<< (const char * value)
|
||
{
|
||
while (const char * it = std::strpbrk(value, "\t\n\\"))
|
||
{
|
||
ostr.write(value, it - value);
|
||
switch (*it)
|
||
{
|
||
case '\t':
|
||
ostr.write("\\t", 2);
|
||
break;
|
||
case '\n':
|
||
ostr.write("\\n", 2);
|
||
break;
|
||
case '\\':
|
||
ostr.write("\\\\", 2);
|
||
break;
|
||
default:
|
||
;
|
||
}
|
||
value = it + 1;
|
||
}
|
||
return ostr << value;
|
||
}
|
||
|
||
|
||
std::ostream & operator<< (const Value & string)
|
||
{
|
||
writeEscapedData(string.data(), string.size());
|
||
return ostr;
|
||
}
|
||
|
||
|
||
std::ostream & operator<< (const Row & row)
|
||
{
|
||
for (size_t i = 0; i < row.size(); ++i)
|
||
{
|
||
if (i != 0)
|
||
ostr << '\t';
|
||
|
||
if (row[i].isNull())
|
||
{
|
||
ostr << "\\N";
|
||
continue;
|
||
}
|
||
|
||
(*this) << row[i];
|
||
}
|
||
|
||
return ostr;
|
||
}
|
||
|
||
|
||
template <typename T>
|
||
std::ostream & operator<< (const Null<T> & value)
|
||
{
|
||
if(value.is_null)
|
||
ostr << "\\N";
|
||
else
|
||
*this << value.data;
|
||
|
||
return ostr ;
|
||
}
|
||
|
||
|
||
template <typename T>
|
||
std::ostream & operator<< (const std::vector<T> & value)
|
||
{
|
||
throw Poco::Exception(std::string(__PRETTY_FUNCTION__) + " is not implemented");
|
||
}
|
||
|
||
private:
|
||
|
||
void writeEscapedData(const char * data, size_t length)
|
||
{
|
||
size_t i = 0;
|
||
|
||
while (true)
|
||
{
|
||
size_t remaining_length = std::strlen(data);
|
||
(*this) << data;
|
||
if (i + remaining_length == length)
|
||
break;
|
||
|
||
ostr.write("\\0", 2);
|
||
i += remaining_length + 1;
|
||
data += remaining_length + 1;
|
||
}
|
||
}
|
||
};
|
||
|
||
inline EscapeManipResult operator<< (std::ostream & ostr, escape_enum manip)
|
||
{
|
||
return EscapeManipResult(ostr);
|
||
}
|
||
|
||
|
||
struct QuoteManipResult
|
||
{
|
||
public:
|
||
std::ostream & ostr;
|
||
|
||
QuoteManipResult(std::ostream & ostr_) : ostr(ostr_) {}
|
||
|
||
std::ostream & operator<< (bool value) { return ostr << static_cast<int>(value); }
|
||
std::ostream & operator<< (char value) { return ostr << static_cast<int>(value); }
|
||
std::ostream & operator<< (unsigned char value) { return ostr << static_cast<int>(value); }
|
||
std::ostream & operator<< (signed char value) { return ostr << static_cast<int>(value); }
|
||
std::ostream & operator<< (short value) { return ostr << value; }
|
||
std::ostream & operator<< (unsigned short value) { return ostr << value; }
|
||
std::ostream & operator<< (int value) { return ostr << value; }
|
||
std::ostream & operator<< (unsigned int value) { return ostr << value; }
|
||
std::ostream & operator<< (long value) { return ostr << value; }
|
||
std::ostream & operator<< (unsigned long value) { return ostr << value; }
|
||
std::ostream & operator<< (float value) { return ostr << value; }
|
||
std::ostream & operator<< (double value) { return ostr << value; }
|
||
std::ostream & operator<< (long long value) { return ostr << value; }
|
||
std::ostream & operator<< (unsigned long long value) { return ostr << value; }
|
||
std::ostream & operator<< (Date value) { return ostr << '\'' << value << '\''; }
|
||
std::ostream & operator<< (DateTime value) { return ostr << '\'' << value << '\''; }
|
||
|
||
std::ostream & operator<< (const std::string & value)
|
||
{
|
||
ostr.put('\'');
|
||
writeEscapedData(value.data(), value.length());
|
||
ostr.put('\'');
|
||
|
||
return ostr;
|
||
}
|
||
|
||
|
||
std::ostream & operator<< (const char * value)
|
||
{
|
||
ostr.put('\'');
|
||
writeEscapedCString(value);
|
||
ostr.put('\'');
|
||
return ostr;
|
||
}
|
||
|
||
template <typename T>
|
||
std::ostream & operator<< (const Null<T> & value)
|
||
{
|
||
if(value.is_null)
|
||
{
|
||
ostr << "\\N";
|
||
}
|
||
else
|
||
{
|
||
*this << value.data;
|
||
}
|
||
return ostr ;
|
||
}
|
||
|
||
template <typename T>
|
||
std::ostream & operator<< (const std::vector<T> & value)
|
||
{
|
||
throw Poco::Exception(std::string(__PRETTY_FUNCTION__) + " is not implemented");
|
||
}
|
||
|
||
private:
|
||
|
||
void writeEscapedCString(const char * value)
|
||
{
|
||
while (const char * it = std::strpbrk(value, "'\\\""))
|
||
{
|
||
ostr.write(value, it - value);
|
||
switch (*it)
|
||
{
|
||
case '"':
|
||
ostr.write("\\\"", 2);
|
||
break;
|
||
case '\'':
|
||
ostr.write("\\'", 2);
|
||
break;
|
||
case '\\':
|
||
ostr.write("\\\\", 2);
|
||
break;
|
||
default:
|
||
;
|
||
}
|
||
value = it + 1;
|
||
}
|
||
ostr << value;
|
||
}
|
||
|
||
|
||
void writeEscapedData(const char * data, size_t length)
|
||
{
|
||
size_t i = 0;
|
||
|
||
while (true)
|
||
{
|
||
size_t remaining_length = std::strlen(data);
|
||
writeEscapedCString(data);
|
||
if (i + remaining_length == length)
|
||
break;
|
||
|
||
ostr.write("\\0", 2);
|
||
i += remaining_length + 1;
|
||
data += remaining_length + 1;
|
||
}
|
||
}
|
||
};
|
||
|
||
inline QuoteManipResult operator<< (std::ostream & ostr, quote_enum manip)
|
||
{
|
||
return QuoteManipResult(ostr);
|
||
}
|
||
|
||
|
||
/** Манипулятор istream, позволяет считывать значения из tab delimited файла.
|
||
*/
|
||
enum unescape_enum
|
||
{
|
||
unescape
|
||
};
|
||
|
||
|
||
/** Манипулятор istream, который позволяет читать значения в кавычках или без.
|
||
*/
|
||
enum unquote_enum
|
||
{
|
||
unquote
|
||
};
|
||
|
||
|
||
inline void parseEscapeSequence(std::istream & istr, std::string & value)
|
||
{
|
||
char c = istr.get();
|
||
if (!istr.good())
|
||
throw Poco::Exception("Cannot parse string: unexpected end of input.");
|
||
|
||
switch(c)
|
||
{
|
||
case 'b':
|
||
value.push_back('\b');
|
||
break;
|
||
case 'f':
|
||
value.push_back('\f');
|
||
break;
|
||
case 'n':
|
||
value.push_back('\n');
|
||
break;
|
||
case 'r':
|
||
value.push_back('\r');
|
||
break;
|
||
case 't':
|
||
value.push_back('\t');
|
||
break;
|
||
default:
|
||
value.push_back(c);
|
||
break;
|
||
}
|
||
}
|
||
|
||
|
||
struct UnEscapeManipResult
|
||
{
|
||
std::istream & istr;
|
||
|
||
UnEscapeManipResult(std::istream & istr_) : istr(istr_) {}
|
||
|
||
std::istream & operator>> (bool & value) { int tmp = 0; istr >> tmp; value = tmp; return istr; }
|
||
std::istream & operator>> (char & value) { int tmp = 0; istr >> tmp; value = tmp; return istr; }
|
||
std::istream & operator>> (unsigned char & value) { int tmp = 0; istr >> tmp; value = tmp; return istr; }
|
||
std::istream & operator>> (signed char & value) { int tmp = 0; istr >> tmp; value = tmp; return istr; }
|
||
std::istream & operator>> (short & value) { return istr >> value; }
|
||
std::istream & operator>> (unsigned short & value) { return istr >> value; }
|
||
std::istream & operator>> (int & value) { return istr >> value; }
|
||
std::istream & operator>> (unsigned int & value) { return istr >> value; }
|
||
std::istream & operator>> (long & value) { return istr >> value; }
|
||
std::istream & operator>> (unsigned long & value) { return istr >> value; }
|
||
std::istream & operator>> (float & value) { return istr >> value; }
|
||
std::istream & operator>> (double & value) { return istr >> value; }
|
||
std::istream & operator>> (long long & value) { return istr >> value; }
|
||
std::istream & operator>> (unsigned long long & value) { return istr >> value; }
|
||
|
||
std::istream & operator>> (std::string & value)
|
||
{
|
||
value.clear();
|
||
|
||
char c;
|
||
while (1)
|
||
{
|
||
istr.get(c);
|
||
if (!istr.good())
|
||
break;
|
||
|
||
switch (c)
|
||
{
|
||
case '\\':
|
||
parseEscapeSequence(istr, value);
|
||
break;
|
||
|
||
case '\t':
|
||
istr.unget();
|
||
return istr;
|
||
break;
|
||
|
||
case '\n':
|
||
istr.unget();
|
||
return istr;
|
||
break;
|
||
|
||
default:
|
||
value.push_back(c);
|
||
break;
|
||
}
|
||
}
|
||
return istr;
|
||
}
|
||
|
||
/// Чтение NULL-able типа.
|
||
template <typename T>
|
||
std::istream & operator>> (Null<T> & value)
|
||
{
|
||
char c;
|
||
istr.get(c);
|
||
if (c == '\\' && istr.peek() == 'N')
|
||
{
|
||
value.is_null = true;
|
||
istr.ignore();
|
||
}
|
||
else
|
||
{
|
||
istr.unget();
|
||
value.is_null = false;
|
||
*this >> value.data;
|
||
}
|
||
return istr;
|
||
}
|
||
|
||
std::istream & operator>> (Date & value)
|
||
{
|
||
std::string s;
|
||
(*this) >> s;
|
||
value = Date(s);
|
||
return istr;
|
||
}
|
||
|
||
std::istream & operator>> (DateTime & value)
|
||
{
|
||
std::string s;
|
||
(*this) >> s;
|
||
value = DateTime(s);
|
||
return istr;
|
||
}
|
||
|
||
template <typename T>
|
||
std::istream & operator>> (std::vector<T> & value)
|
||
{
|
||
throw Poco::Exception(std::string(__PRETTY_FUNCTION__) + " is not implemented");
|
||
}
|
||
};
|
||
|
||
inline UnEscapeManipResult operator>> (std::istream & istr, unescape_enum manip)
|
||
{
|
||
return UnEscapeManipResult(istr);
|
||
}
|
||
|
||
|
||
struct UnQuoteManipResult
|
||
{
|
||
public:
|
||
std::istream & istr;
|
||
|
||
UnQuoteManipResult(std::istream & istr_) : istr(istr_) {}
|
||
|
||
std::istream & operator>> (bool & value) { int tmp = 0; istr >> tmp; value = tmp; return istr; }
|
||
std::istream & operator>> (char & value) { int tmp = 0; istr >> tmp; value = tmp; return istr; }
|
||
std::istream & operator>> (unsigned char & value) { int tmp = 0; istr >> tmp; value = tmp; return istr; }
|
||
std::istream & operator>> (signed char & value) { int tmp = 0; istr >> tmp; value = tmp; return istr; }
|
||
std::istream & operator>> (short & value) { return istr >> value; }
|
||
std::istream & operator>> (unsigned short & value) { return istr >> value; }
|
||
std::istream & operator>> (int & value) { return istr >> value; }
|
||
std::istream & operator>> (unsigned int & value) { return istr >> value; }
|
||
std::istream & operator>> (long & value) { return istr >> value; }
|
||
std::istream & operator>> (unsigned long & value) { return istr >> value; }
|
||
std::istream & operator>> (float & value) { return istr >> value; }
|
||
std::istream & operator>> (double & value) { return istr >> value; }
|
||
std::istream & operator>> (long long & value) { return istr >> value; }
|
||
std::istream & operator>> (unsigned long long & value) { return istr >> value; }
|
||
|
||
std::istream & operator>> (std::string & value)
|
||
{
|
||
value.clear();
|
||
readQuote();
|
||
|
||
char c;
|
||
while (1)
|
||
{
|
||
istr.get(c);
|
||
if (!istr.good())
|
||
break;
|
||
|
||
switch (c)
|
||
{
|
||
case '\\':
|
||
parseEscapeSequence(istr, value);
|
||
break;
|
||
|
||
case '\'':
|
||
return istr;
|
||
break;
|
||
|
||
default:
|
||
value.push_back(c);
|
||
break;
|
||
}
|
||
}
|
||
throw Poco::Exception("Cannot parse string: unexpected end of input.");
|
||
}
|
||
|
||
template <typename T>
|
||
std::istream & operator>> (std::vector<T> & value)
|
||
{
|
||
throw Poco::Exception(std::string(__PRETTY_FUNCTION__) + " is not implemented");
|
||
}
|
||
|
||
private:
|
||
|
||
void readQuote()
|
||
{
|
||
char c = istr.get();
|
||
if (!istr.good())
|
||
throw Poco::Exception("Cannot parse string: unexpected end of input.");
|
||
if (c != '\'')
|
||
throw Poco::Exception("Cannot parse string: missing opening single quote.");
|
||
}
|
||
};
|
||
|
||
inline UnQuoteManipResult operator>> (std::istream & istr, unquote_enum manip)
|
||
{
|
||
return UnQuoteManipResult(istr);
|
||
}
|
||
|
||
|
||
}
|