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#pragma once
#include "util_fmt_desc.h"
#include <util/datetime/base.h>
namespace NKikimr {
namespace NFmt {
struct TDelay {
TDelay(TDuration val): Val(val) { }
TOut& Do(TOut &out) const
{
const ui64 grid[] = {
60ull, /* minute */
3600ull, /* hour */
86400ull, /* day */
604800ull, /* week */
8553600ull, /* 99 days */
31557600ull, /* Julian 365.25 days year */
3155760000ull, /* Julian 100 years century */
};
if (Val == TDuration::Max()) return out << "undef~";
const auto secs = Val.Seconds();
if (secs < grid[0]) return Small(out, secs);
if (secs < grid[1]) return Large(out, secs, 'm', grid[0]);
if (secs < grid[2]) return Large(out, secs, 'h', grid[1]);
if (secs < grid[4]) return Large(out, secs, 'd', grid[2]);
if (secs < grid[5]) return Large(out, secs, 'w', grid[3]);
if (secs < grid[6]) return Large(out, secs, 'y', grid[5]);
return Large(out, secs, 'c', grid[6]);
}
protected:
inline TOut& Small(TOut &out, ui64 secs) const
{
char ln_[8];
auto ms = Val.MilliSeconds() - secs * 1000;
snprintf(ln_, sizeof(ln_), "%zu.%.03zu", secs, ms);
return ln_[5] = 's', out.Write(ln_, 6), out;
}
TOut& Large(TOut &out, double sec, char suff, ui64 base) const
{
char ln_[16];
snprintf(ln_, sizeof(ln_), "%.03f", sec / base);
return ln_[5] = suff, out.Write(ln_, 6), out;
}
TDuration Val;
};
inline TOut& operator<<(TOut &out, const NFmt::TDelay &print)
{
return print.Do(out);
}
}
}
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