library/cpp/http/misc/httpdate.h


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#pragma once

#include <util/datetime/base.h>
#include <util/generic/string.h>

#include <ctime>

#define BAD_DATE ((time_t)-1)

inline time_t parse_http_date(const TStringBuf& datestring) {
    try {
        return TInstant::ParseHttpDeprecated(datestring).TimeT();
    } catch (const TDateTimeParseException&) {
        return BAD_DATE;
    }
}

int format_http_date(char buf[], size_t size, time_t when); 
char* format_http_date(time_t when, char* buf, size_t len);

TString FormatHttpDate(time_t when);