Initial implementation of util/time.c

This commit is contained in:
Jose Marcial Vieira Bisneto 2016-12-13 22:16:51 -03:00
parent 876e2dfcf2
commit 9ec06749f2
2 changed files with 71 additions and 0 deletions

12
include/ipfs/util/time.h Normal file
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#ifndef IPFS_TIME_H
#define IPFS_TIME_H
struct stime {
time_t t;
struct timespec ts;
};
int get_gmttime(struct stime *st);
int ipfs_util_time_parse_RFC3339 (struct stime *st, char *s);
char *ipfs_util_time_format_RFC3339 (struct stime *st);
#endif // IPFS_TIME_H

59
util/time.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef __USE_XOPEN
#define __USE_XOPEN
#endif // __USE_XOPEN
#ifndef __USE_ISOC11
#define __USE_ISOC11
#endif // __USE_ISOC11
#include <time.h>
#include "ipfs/util/time.h"
int get_gmttime(struct stime *st) {
if (!st) {
return 1;
}
if (!timespec_get(&st->ts, TIME_UTC) ||
!time(&st->t)) {
return 2;
}
return 0;
}
int ipfs_util_time_parse_RFC3339 (struct stime *st, char *s)
{
char *r;
struct tm tm;
if (!st || !s || strlen(s) != 35) {
return 1;
}
r = strptime (s, "%Y-%m-%dT%H:%M:%S", &tm);
if (!r || *r != '.') {
return 2;
}
st->t = mktime(&tm);
st->ts.tv_nsec = atoll(++r);
return 0;
}
char *ipfs_util_time_format_RFC3339 (struct stime *st)
{
char buf[31], *ret;
ret = malloc(36);
if (!ret) {
return NULL;
}
if (strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S.%%09dZ00:00", gmtime(&st->t)) != sizeof(buf)-1 ||
snprintf(ret, 36, buf, st->ts.tv_nsec) != 35) {
free (ret);
return NULL;
}
return ret;
}