size_t cdtime_to_iso8601 (char *s, size_t max, cdtime_t t) /* {{{ */
{
struct timespec t_spec;
struct tm t_tm;
size_t len;
CDTIME_T_TO_TIMESPEC (t, &t_spec);
NORMALIZE_TIMESPEC (t_spec);
if (localtime_r ((time_t *)&t_spec.tv_sec, &t_tm) == NULL) {
char errbuf[1024];
ERROR ("cdtime_to_iso8601: localtime_r failed: %s",
sstrerror (errno, errbuf, sizeof (errbuf)));
return (0);
}
len = strftime (s, max, "%Y-%m-%dT%H:%M:%S", &t_tm);
if (len == 0)
return 0;
if (max - len > 2) {
int n = snprintf (s + len, max - len, ".%09i", (int)t_spec.tv_nsec);
len += (n < max - len) ? n : max - len;
}
if (max - len > 3) {
int n = strftime (s + len, max - len, "%z", &t_tm);
len += (n < max - len) ? n : max - len;
}
s[max - 1] = '\0';
return len;
} /* }}} size_t cdtime_to_iso8601 */
static int format_rfc3339 (char *buffer, size_t buffer_size, cdtime_t t, _Bool print_nano) /* {{{ */
{
struct timespec t_spec;
struct tm t_tm;
char base[20]; /* 2006-01-02T15:04:05 */
char nano[11]; /* .999999999 */
char zone[7]; /* +00:00 */
char *fields[] = {base, nano, zone};
size_t len;
CDTIME_T_TO_TIMESPEC (t, &t_spec);
NORMALIZE_TIMESPEC (t_spec);
if (localtime_r (&t_spec.tv_sec, &t_tm) == NULL) {
char errbuf[1024];
int status = errno;
ERROR ("format_rfc3339: localtime_r failed: %s",
sstrerror (status, errbuf, sizeof (errbuf)));
return (status);
}
len = strftime (base, sizeof (base), "%Y-%m-%dT%H:%M:%S", &t_tm);
if (len == 0)
return ENOMEM;
if (print_nano)
ssnprintf (nano, sizeof (nano), ".%09ld", (long) t_spec.tv_nsec);
else
sstrncpy (nano, "", sizeof (nano));
format_zone (zone, sizeof (zone));
if (strjoin (buffer, buffer_size, fields, STATIC_ARRAY_SIZE (fields), "") < 0)
return ENOMEM;
return 0;
} /* }}} int cdtime_to_rfc3339nano */