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#include "mysql_types.h"
#include "helpers.h"
#include "rawDataReader.h"
#include <algorithm>
#include <array>
#include <byteswap.h>
#include <stdexcept>
#include <string>
namespace MyGrate::MySQL {
#define NTOH(B) \
inline auto ntoh(uint##B##_t x) \
{ \
if constexpr (__BYTE_ORDER == __LITTLE_ENDIAN) \
x = bswap_##B(x); \
return x; \
}
NTOH(32)
NTOH(64)
typename Type<MYSQL_TYPE_NULL, false>::C
Type<MYSQL_TYPE_NULL, false>::read(RawDataReader &, RawDataReader &)
{
return nullptr;
}
#define INTEGER_TYPE(ET) \
typename Type<ET, false>::C Type<ET, false>::read(RawDataReader &, RawDataReader & data) \
{ \
return data.readValue<typename Type<ET, false>::C>(); \
} \
typename Type<ET, true>::C Type<ET, true>::read(RawDataReader &, RawDataReader & data) \
{ \
return data.readValue<typename Type<ET, true>::C>(); \
}
INTEGER_TYPE(MYSQL_TYPE_TINY)
INTEGER_TYPE(MYSQL_TYPE_SHORT)
INTEGER_TYPE(MYSQL_TYPE_LONG)
INTEGER_TYPE(MYSQL_TYPE_LONGLONG)
#undef INTEGER_TYPE
#define FLOAT_TYPE(ET) \
typename Type<ET, false>::C Type<ET, false>::read(RawDataReader & md, RawDataReader & data) \
{ \
verify<std::length_error>(sizeof(typename Type<ET>::C) == md.readValue<uint8_t>(), "Invalid " #ET " size"); \
return data.readValue<typename Type<ET>::C>(); \
}
FLOAT_TYPE(MYSQL_TYPE_FLOAT)
FLOAT_TYPE(MYSQL_TYPE_DOUBLE)
#undef FLOAT_TYPE
typename Type<MYSQL_TYPE_DECIMAL>::C
Type<MYSQL_TYPE_DECIMAL>::read(RawDataReader &, RawDataReader &)
{
throw std::logic_error("Not implemented");
}
typename Type<MYSQL_TYPE_NEWDECIMAL>::C
Type<MYSQL_TYPE_NEWDECIMAL>::read(RawDataReader &, RawDataReader &)
{
throw std::logic_error("Not implemented");
}
#define INTEGER_TYPE(ET, s, l) \
typename Type<ET, s>::C Type<ET, s>::read(RawDataReader &, RawDataReader & data) \
{ \
return data.readValue<typename Type<ET, s>::C, l>(); \
}
INTEGER_TYPE(MYSQL_TYPE_INT24, false, 3)
INTEGER_TYPE(MYSQL_TYPE_INT24, true, 3)
#undef INTEGER_TYPE
typename Type<MYSQL_TYPE_YEAR, false>::C
Type<MYSQL_TYPE_YEAR, false>::read(RawDataReader &, RawDataReader & data)
{
auto y {data.readValue<typename Type<MYSQL_TYPE_YEAR, false>::C, 1>()};
if (y) {
y += 1900;
};
return y;
}
static Blob
readBlob(RawDataReader & md, RawDataReader & data)
{
const auto lenlen {md.readValue<uint8_t>()};
const auto len {data.readValue<uint64_t>(lenlen)};
return data.viewValue<Blob>(len);
}
#define BLOB_TYPE(ET) \
typename Type<ET, false>::C Type<ET, false>::read(RawDataReader & md, RawDataReader & data) \
{ \
return readBlob(md, data); \
}
BLOB_TYPE(MYSQL_TYPE_TINY_BLOB)
BLOB_TYPE(MYSQL_TYPE_MEDIUM_BLOB)
BLOB_TYPE(MYSQL_TYPE_LONG_BLOB)
BLOB_TYPE(MYSQL_TYPE_GEOMETRY) // Ummm, pass this to the target to handle?
#undef BLOB_TYPE
typename Type<MYSQL_TYPE_BLOB, false>::C
Type<MYSQL_TYPE_BLOB, false>::read(RawDataReader & md, RawDataReader & data)
{
const auto lenlen {md.readValue<uint8_t>()};
const auto len {data.readValue<uint64_t>(lenlen)};
return data.viewValue<std::string_view>(len);
}
typename Type<MYSQL_TYPE_BIT>::C
Type<MYSQL_TYPE_BIT>::read(RawDataReader &, RawDataReader &)
{
throw std::logic_error("Not implemented");
}
#define STRING_TYPE(ET) \
typename Type<ET, false>::C Type<ET, false>::read(RawDataReader & md, RawDataReader & data) \
{ \
const auto realtype {md.readValue<enum_field_types, 1>()}; \
const auto len {md.readValue<uint8_t>()}; \
switch (realtype) { \
case MYSQL_TYPE_ENUM: \
case MYSQL_TYPE_VAR_STRING: \
return data.viewValue<std::string_view>(len); \
default: \
throw std::logic_error("Not implemented: sub-type: " + std::to_string(realtype)); \
} \
throw std::logic_error("Didn't return a value: " + std::to_string(realtype)); \
}
STRING_TYPE(MYSQL_TYPE_STRING)
STRING_TYPE(MYSQL_TYPE_JSON)
STRING_TYPE(MYSQL_TYPE_SET)
STRING_TYPE(MYSQL_TYPE_ENUM)
#undef STRING_TYPE
typename Type<MYSQL_TYPE_VARCHAR>::C
Type<MYSQL_TYPE_VARCHAR>::read(RawDataReader & md, RawDataReader & data)
{
const auto fieldlen {md.readValue<uint16_t>()};
const auto len {data.readValue<uint16_t>(fieldlen > 255 ? 2 : 1)};
return data.viewValue<std::string_view>(len);
}
typename Type<MYSQL_TYPE_VAR_STRING>::C
Type<MYSQL_TYPE_VAR_STRING>::read(RawDataReader & md, RawDataReader & data)
{
const auto fieldlen {md.readValue<uint16_t>()};
const auto len {md.readValue<uint16_t>(fieldlen > 255 ? 2 : 1)};
return data.viewValue<std::string_view>(len);
}
typename Type<MYSQL_TYPE_DATETIME>::C
Type<MYSQL_TYPE_DATETIME>::read(RawDataReader &, RawDataReader & data)
{
auto dtint {data.readValue<uint64_t>()};
DateTime dt {};
dt.second = mod100_extract(dtint);
dt.minute = mod100_extract(dtint);
dt.hour = mod100_extract(dtint);
dt.day = mod100_extract(dtint);
dt.month = mod100_extract(dtint);
dt.year = boost::numeric_cast<decltype(dt.year)>(dtint);
return dt;
}
typename Type<MYSQL_TYPE_TIME>::C
Type<MYSQL_TYPE_TIME>::read(RawDataReader &, RawDataReader & data)
{
auto tint {data.readValue<uint32_t, 3>()};
Time t {};
t.second = mod100_extract(tint);
t.minute = mod100_extract(tint);
t.hour = boost::numeric_cast<decltype(t.hour)>(tint);
return t;
}
Time
time2From24bit(uint32_t tint)
{
Time t {};
t.second = bitslice<6>(tint, 8);
t.minute = bitslice<6>(tint, 14);
t.hour = bitslice<5>(tint, 20);
return t;
}
typename Type<MYSQL_TYPE_TIME2>::C
Type<MYSQL_TYPE_TIME2>::read(RawDataReader & md, RawDataReader & data)
{
md.discard(1);
return time2From24bit(ntoh(data.readValue<uint32_t>(3)));
}
typename Type<MYSQL_TYPE_DATE>::C
Type<MYSQL_TYPE_DATE>::read(RawDataReader &, RawDataReader & data)
{
const auto dint {data.readValue<uint32_t, 3>()};
Date d {};
d.day = bitslice<5>(dint, 0);
d.month = bitslice<4>(dint, 5);
d.year = bitslice<14>(dint, 9);
return d;
}
typename Type<MYSQL_TYPE_NEWDATE>::C
Type<MYSQL_TYPE_NEWDATE>::read(RawDataReader &, RawDataReader &)
{
throw std::logic_error("Not implemented");
}
typename Type<MYSQL_TYPE_TIMESTAMP>::C
Type<MYSQL_TYPE_TIMESTAMP>::read(RawDataReader &, RawDataReader & data)
{
return {data.readValue<int32_t>(), 0};
}
typename Type<MYSQL_TYPE_TIMESTAMP2>::C
Type<MYSQL_TYPE_TIMESTAMP2>::read(RawDataReader & md, RawDataReader & data)
{
const auto decimals {md.readValue<uint8_t>()};
return {data.readValue<int32_t>(), data.readValue<long>(decimals)};
}
typename Type<MYSQL_TYPE_DATETIME2>::C
Type<MYSQL_TYPE_DATETIME2>::read(RawDataReader & md, RawDataReader & data)
{
md.discard(1);
return datetime2From40bit(ntoh(data.readValue<uint64_t>(5)));
}
DateTime
datetime2From40bit(uint64_t dtint)
{
DateTime dt;
dt.year = boost::numeric_cast<decltype(dt.year)>(bitslice<17>(dtint, 46) / 13);
dt.month = boost::numeric_cast<decltype(dt.month)>(bitslice<17>(dtint, 46) % 13);
dt.day = bitslice<5>(dtint, 41);
dt.hour = bitslice<5>(dtint, 36);
dt.minute = bitslice<6>(dtint, 30);
dt.second = bitslice<6>(dtint, 24);
return dt;
}
}
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