const char* Field_set::unpack(const char* from) {
ulonglong tmp;
switch(pack_length()) {
case 1:
tmp = ulonglong(*((unsigned char*)(from)));
break;
case 2:
tmp = ulonglong(uint2korr(from));
break;
case 3:
tmp = ulonglong(uint3korr(from));
break;
case 4:
tmp = ulonglong(uint4korr(from));
break;
case 8:
tmp = uint8korr(from);
break;
default:
tmp = uint8korr(from);
break;
}
field_data = tmp;
LOG_TRACE(log, " set: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_longlong::unpack(const char* from) {
ulonglong tmp = uint8korr(from);
field_data = tmp;
LOG_TRACE(log, " longlong: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_medium::unpack(const char* from) {
uint32 tmp = uint3korr(from);
field_data = tmp;
LOG_TRACE(log, " medium: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_short::unpack(const char* from) {
uint16 tmp = uint2korr(from);
field_data = tmp;
LOG_TRACE(log, " short: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_tiny::unpack(const char* from) {
char tmp = *((char*)(from));
field_data = tmp;
LOG_TRACE(log, " tiny: " << (int)(tmp) << " // " << pack_length());
return from + pack_length();
}
const char* Field_float::unpack(const char* from) {
float tmp = *((float*)(from));
field_data = tmp;
LOG_TRACE(log, " float: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_timestamp::unpack(const char* from) {
uint32 tmp = uint4korr(from);
field_data = tmp;
LOG_TRACE(log, " timestamp: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_double::unpack(const char* from) {
double tmp = *((double*)(from));
field_data = tmp;
LOG_TRACE(log, " double: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_datetime::unpack(const char* from)
{
ulonglong tmp;
if (is_old_storage)
{
tmp = uint8korr(from);
}
else
{
// !! we ignore fractional part
// 5 bytes + fractional-seconds storage, big endian
// ---------------------------
// 1 bit sign (1= non-negative, 0= negative)
// 17 bits year*13+month (year 0-9999, month 0-12)
// 5 bits day (0-31)
// 5 bits hour (0-23)
// 6 bits minute (0-59)
// 6 bits second (0-59)
// ---------------------------
// 40 bits = 5 bytes
ulonglong data;
for (unsigned int i = 0; i < 5; ++i)
*((unsigned char *)&data + 4 - i) = *(from + i);
tmp = data & 63;
data >>= 6;
tmp += (data & 63) * 100;
data >>= 6;
tmp += (data & 31) * 10000;
data >>= 5;
tmp += (data & 31) * 1000000;
data >>= 5;
ulonglong year_month = data & ((1 << 17) - 1);
tmp += year_month % 13 * 100000000;
tmp += year_month / 13 * 10000000000;
}
field_data = tmp;
LOG_TRACE(log, " datetime: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_enum::unpack(const char* from) {
int tmp;
if (pack_length() == 1) {
tmp = int(*((char*)(from)));
} else {
tmp = int(*((short*)(from)));
}
field_data = tmp;
LOG_TRACE(log, " enum: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_time::unpack(const char* from) {
int32 tmp;
if (is_old_storage)
{
tmp = sint3korr(from);
}
else
{
// !! we ignore fractional part
// 3 bytes + fractional-seconds storage, big endian
// ---------------------
// 1 bit sign (1= non-negative, 0= negative)
// 1 bit unused (reserved for future extensions)
// 10 bits hour (0-838)
// 6 bits minute (0-59)
// 6 bits second (0-59)
// ---------------------
// 24 bits = 3 bytes
uint32 data = 0;
for (unsigned int i = 0; i < 3; ++i)
*((unsigned char *)&data + 2 - i) = *(from + i);
uint32 sign = (uint32)((data & (1 << 23)) >> 23);
if (sign == 0)
data = (1 << 23) - data;
tmp = data & 63;
data >>= 6;
tmp += (data & 63) * 100;
data >>= 6;
tmp += (data & 1023) * 10000;
if (sign == 0)
tmp = -tmp;
}
field_data = tmp;
LOG_TRACE(log, " time: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_timestamp::unpack(const char* from) {
uint32 tmp;
if (is_old_storage)
{
tmp = uint4korr(from);
}
else
{
// !! we ignore fractional part
// 4 bytes + fractional-seconds storage, big endian
// same as before 5.6.4, except big endian rather than little endian
tmp = 0;
for (unsigned int i = 0; i < 4; ++i)
*((unsigned char *)&tmp + 3 - i) = *(from + i);
}
field_data = tmp;
LOG_TRACE(log, " timestamp: " << tmp << " // " << pack_length());
return from + pack_length();
}
const char* Field_decimal::unpack(const char *from)
{
double result = dec2double(from);
field_data = result;
return from + pack_length();
}
