Function format_http_date

library/cpp/http/misc/httpdate.cpp:52–65

};

int format_http_date(char buf[], size_t size, time_t when) {
    struct tm tms;
    GmTimeR(&when, &tms);

#ifndef HTTP_DATE_ISO_8601
    return snprintf(buf, size, "%s, %02d %s %04d %02d:%02d:%02d GMT",
        wkdays[tms.tm_wday], tms.tm_mday, months[tms.tm_mon],
        tms.tm_year + 1900, tms.tm_hour, tms.tm_min, tms.tm_sec);
#else /* ISO 8601 */
    return snprintf(buf, size, "%04d%02d%02dT%02d%02d%02d+0000",
        tms.tm_year + 1900, tms.tm_mon + 1, tms.tm_mday,
        tms.tm_hour, tms.tm_min, tms.tm_sec);
#endif
}

char* format_http_date(time_t when, char* buf, size_t buflen) {
    const int len = format_http_date(buf, buflen, when);