ClickHouse/base/common/tests/date_lut2.cpp

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#include <iostream>
#include <cstring>
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#include <common/DateLUT.h>
static std::string toString(time_t Value)
{
struct tm tm;
char buf[96];
localtime_r(&Value, &tm);
snprintf(buf, sizeof(buf), "%04d-%02d-%02d %02d:%02d:%02d",
tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
return buf;
}
static time_t orderedIdentifierToDate(unsigned value)
{
struct tm tm;
memset(&tm, 0, sizeof(tm));
tm.tm_year = value / 10000 - 1900;
tm.tm_mon = (value % 10000) / 100 - 1;
tm.tm_mday = value % 100;
tm.tm_isdst = -1;
return mktime(&tm);
}
void loop(time_t begin, time_t end, int step)
{
const auto & date_lut = DateLUT::instance();
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for (time_t t = begin; t < end; t += step)
std::cout << toString(t)
<< ", " << toString(date_lut.toTime(t))
<< ", " << date_lut.toHour(t)
<< std::endl;
}
int main(int argc, char ** argv)
{
loop(orderedIdentifierToDate(20101031), orderedIdentifierToDate(20101101), 15 * 60);
loop(orderedIdentifierToDate(20100328), orderedIdentifierToDate(20100330), 15 * 60);
loop(orderedIdentifierToDate(20141020), orderedIdentifierToDate(20141106), 15 * 60);
return 0;
}