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lib/timeutils: add common ISO timestamp masks 

* Start the ISO format flags at bit 0 instead of bit 1.

* Remove unnecessary _8601 from ISO format flag names to
  avoid line wrapping and to ease readability.

* ISO timestamps have date-time-timzone in common, so move
  the TIMEZONE flag to bit 2 causing all timestamp masks
  to have the first three bits set and the last four bits
  as timestamp 'options'.

* Change the 'SPACE' flag to a 'T' flag, because it makes
  the code and comments more concise.

* Add common ISO timestamp masks.

* Implement the ISO timestamp masks in all applicable code
  using the strxxx_iso() functions.

Signed-off-by: J William Piggott <elseifthen@gmx.com>
This commit is contained in:
J William Piggott 2017-10-14 20:37:11 -04:00
parent 9fd0a7a96c
commit 4111bb3ab5
11 changed files with 48 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
include/timeutils.h
View File

@ -55,18 +55,26 @@ typedef uint64_t nsec_t;
int parse_timestamp(const char *t, usec_t *usec);
int get_gmtoff(const struct tm *tp);
/* flags for strxxx_iso() functions */
/* flags and masks for strxxx_iso() functions */
enum {
ISO_8601_DATE = (1 << 1),
ISO_8601_TIME = (1 << 2),
ISO_8601_DOTUSEC = (1 << 3),
ISO_8601_COMMAUSEC = (1 << 4),
ISO_8601_TIMEZONE = (1 << 5),
ISO_8601_SPACE = (1 << 6),
ISO_8601_GMTIME = (1 << 7)
ISO_DATE = (1 << 0),
ISO_TIME = (1 << 1),
ISO_TIMEZONE = (1 << 2),
ISO_DOTUSEC = (1 << 3),
ISO_COMMAUSEC = (1 << 4),
ISO_T = (1 << 5),
ISO_GMTIME = (1 << 6),
ISO_TIMESTAMP = ISO_DATE | ISO_TIME | ISO_TIMEZONE,
ISO_TIMESTAMP_T = ISO_TIMESTAMP | ISO_T,
ISO_TIMESTAMP_DOT = ISO_TIMESTAMP | ISO_DOTUSEC,
ISO_TIMESTAMP_DOT_T = ISO_TIMESTAMP_DOT | ISO_T,
ISO_TIMESTAMP_COMMA = ISO_TIMESTAMP | ISO_COMMAUSEC,
ISO_TIMESTAMP_COMMA_T = ISO_TIMESTAMP_COMMA | ISO_T,
ISO_TIMESTAMP_COMMA_G = ISO_TIMESTAMP_COMMA | ISO_GMTIME,
ISO_TIMESTAMP_COMMA_GT = ISO_TIMESTAMP_COMMA_G | ISO_T
};
#define ISO_8601_BUFSIZ 42
#define ISO_BUFSIZ 42
int strtimeval_iso(struct timeval *tv, int flags, char *buf, size_t bufsz);
int strtm_iso(struct tm *tm, int flags, char *buf, size_t bufsz);

32
lib/timeutils.c
View File

@ -405,7 +405,7 @@ static int format_iso_time(struct tm *tm, suseconds_t usec, int flags, char *buf
char *p = buf;
int len;
if (flags & ISO_8601_DATE) {
if (flags & ISO_DATE) {
len = snprintf(p, bufsz, "%4d-%.2d-%.2d", tm->tm_year + 1900,
tm->tm_mon + 1, tm->tm_mday);
if (len < 0 || (size_t) len > bufsz)
@ -414,14 +414,14 @@ static int format_iso_time(struct tm *tm, suseconds_t usec, int flags, char *buf
p += len;
}
if ((flags & ISO_8601_DATE) && (flags & ISO_8601_TIME)) {
if ((flags & ISO_DATE) && (flags & ISO_TIME)) {
if (bufsz < 1)
return -1;
*p++ = (flags & ISO_8601_SPACE) ? ' ' : 'T';
*p++ = (flags & ISO_T) ? 'T' : ' ';
bufsz--;
}
if (flags & ISO_8601_TIME) {
if (flags & ISO_TIME) {
len = snprintf(p, bufsz, "%02d:%02d:%02d", tm->tm_hour,
tm->tm_min, tm->tm_sec);
if (len < 0 || (size_t) len > bufsz)
@ -430,14 +430,14 @@ static int format_iso_time(struct tm *tm, suseconds_t usec, int flags, char *buf
p += len;
}
if (flags & ISO_8601_DOTUSEC) {
if (flags & ISO_DOTUSEC) {
len = snprintf(p, bufsz, ".%06ld", (long) usec);
if (len < 0 || (size_t) len > bufsz)
return -1;
bufsz -= len;
p += len;
} else if (flags & ISO_8601_COMMAUSEC) {
} else if (flags & ISO_COMMAUSEC) {
len = snprintf(p, bufsz, ",%06ld", (long) usec);
if (len < 0 || (size_t) len > bufsz)
return -1;
@ -445,7 +445,7 @@ static int format_iso_time(struct tm *tm, suseconds_t usec, int flags, char *buf
p += len;
}
if (flags & ISO_8601_TIMEZONE) {
if (flags & ISO_TIMEZONE) {
int tmin = get_gmtoff(tm) / 60;
int zhour = tmin / 60;
int zmin = abs(tmin % 60);
@ -461,7 +461,7 @@ int strtimeval_iso(struct timeval *tv, int flags, char *buf, size_t bufsz)
{
struct tm tm;
if (flags & ISO_8601_GMTIME)
if (flags & ISO_GMTIME)
tm = *gmtime(&tv->tv_sec);
else
tm = *localtime(&tv->tv_sec);
@ -479,7 +479,7 @@ int strtime_iso(const time_t *t, int flags, char *buf, size_t bufsz)
{
struct tm tm;
if (flags & ISO_8601_GMTIME)
if (flags & ISO_GMTIME)
tm = *gmtime(t);
else
tm = *localtime(t);
@ -548,7 +548,7 @@ time_t timegm(struct tm *tm)
int main(int argc, char *argv[])
{
struct timeval tv = { 0 };
char buf[ISO_8601_BUFSIZ];
char buf[ISO_BUFSIZ];
if (argc < 2) {
fprintf(stderr, "usage: %s <time> [<usec>]\n", argv[0]);
@ -559,19 +559,17 @@ int main(int argc, char *argv[])
if (argc == 3)
tv.tv_usec = strtos64_or_err(argv[2], "failed to parse <usec>");
strtimeval_iso(&tv, ISO_8601_DATE, buf, sizeof(buf));
strtimeval_iso(&tv, ISO_DATE, buf, sizeof(buf));
printf("Date: '%s'\n", buf);
strtimeval_iso(&tv, ISO_8601_TIME, buf, sizeof(buf));
strtimeval_iso(&tv, ISO_TIME, buf, sizeof(buf));
printf("Time: '%s'\n", buf);
strtimeval_iso(&tv, ISO_8601_DATE | ISO_8601_TIME | ISO_8601_COMMAUSEC,
buf, sizeof(buf));
strtimeval_iso(&tv, ISO_DATE | ISO_TIME | ISO_COMMAUSEC | ISO_T,
buf, sizeof(buf));
printf("Full: '%s'\n", buf);
strtimeval_iso(&tv, ISO_8601_DATE | ISO_8601_TIME | ISO_8601_DOTUSEC |
ISO_8601_TIMEZONE | ISO_8601_SPACE,
buf, sizeof(buf));
strtimeval_iso(&tv, ISO_TIMESTAMP_DOT, buf, sizeof(buf));
printf("Zone: '%s'\n", buf);
return EXIT_SUCCESS;

2
login-utils/last.c
View File

@ -349,7 +349,7 @@ static int time_formatter(int fmt, char *dst, size_t dlen, time_t *when)
ret = rtrim_whitespace((unsigned char *) dst);
break;
case LAST_TIMEFTM_ISO8601:
ret = strtime_iso(when, ISO_8601_DATE|ISO_8601_TIME|ISO_8601_TIMEZONE, dst, dlen);
ret = strtime_iso(when, ISO_TIMESTAMP_T, dst, dlen);
break;
default:
abort();

5
login-utils/lslogins.c
View File

@ -333,11 +333,10 @@ static char *make_time(int mode, time_t time)
buf, sizeof(buf));
break;
case TIME_ISO:
rc = strtime_iso(&time, ISO_8601_DATE|ISO_8601_TIME|ISO_8601_TIMEZONE,
buf, sizeof(buf));
rc = strtime_iso(&time, ISO_TIMESTAMP_T, buf, sizeof(buf));
break;
case TIME_ISO_SHORT:
rc = strtime_iso(&time, ISO_8601_DATE, buf, sizeof(buf));
rc = strtime_iso(&time, ISO_DATE, buf, sizeof(buf));
break;
default:
errx(EXIT_FAILURE, _("unsupported time type"));

4
login-utils/utmpdump.c
View File

@ -102,9 +102,7 @@ static void print_utline(struct utmpx *ut, FILE *out)
tv.tv_sec = ut->ut_tv.tv_sec;
tv.tv_usec = ut->ut_tv.tv_usec;
if (strtimeval_iso(&tv,
ISO_8601_DATE | ISO_8601_TIME | ISO_8601_COMMAUSEC |
ISO_8601_TIMEZONE | ISO_8601_GMTIME, time_string,
if (strtimeval_iso(&tv, ISO_TIMESTAMP_COMMA_GT, time_string,
sizeof(time_string)) != 0)
return;
cleanse(ut->ut_id);

12
misc-utils/uuidparse.c
View File

@ -224,17 +224,11 @@ static void fill_table_row(struct libscols_table *tb, char const *const uuid)
}
if (variant == UUID_VARIANT_DCE && type == 1) {
struct timeval tv;
char date_buf[ISO_8601_BUFSIZ + 4];
char date_buf[ISO_BUFSIZ];
uuid_time(buf, &tv);
strtimeval_iso(&tv,
ISO_8601_DATE |
ISO_8601_TIME |
ISO_8601_COMMAUSEC |
ISO_8601_TIMEZONE |
ISO_8601_SPACE,
date_buf,
sizeof(date_buf));
strtimeval_iso(&tv, ISO_TIMESTAMP_COMMA,
date_buf, sizeof(date_buf));
str = xstrdup(date_buf);
}
break;

4
sys-utils/dmesg.c
View File

@ -840,9 +840,7 @@ static char *iso_8601_time(struct dmesg_control *ctl, struct dmesg_record *rec,
.tv_usec = rec->tv.tv_usec
};
if (strtimeval_iso(&tv, ISO_8601_DATE|ISO_8601_TIME|ISO_8601_COMMAUSEC|
ISO_8601_TIMEZONE,
buf, bufsz) != 0)
if (strtimeval_iso(&tv, ISO_TIMESTAMP_COMMA_T, buf, bufsz) != 0)
return NULL;
return buf;

6
sys-utils/hwclock.c
View File

@ -554,11 +554,9 @@ set_hardware_clock_exact(const struct hwclock_control *ctl,
static int
display_time(struct timeval hwctime)
{
char buf[ISO_8601_BUFSIZ];
char buf[ISO_BUFSIZ];
if (strtimeval_iso(&hwctime, ISO_8601_DATE|ISO_8601_TIME|ISO_8601_DOTUSEC|
ISO_8601_TIMEZONE|ISO_8601_SPACE,
buf, sizeof(buf))) {
if (strtimeval_iso(&hwctime, ISO_TIMESTAMP_DOT, buf, sizeof(buf))) {
warnx(_("iso-8601 format overflow"));
return EXIT_FAILURE;
}

2
sys-utils/lsipc.c
View File

@ -451,7 +451,7 @@ static char *make_time(int mode, time_t time)
strtime_short(&time, &now, 0, buf, sizeof(buf));
break;
case TIME_ISO:
strtime_iso(&time, ISO_8601_DATE|ISO_8601_TIME|ISO_8601_TIMEZONE, buf, sizeof(buf));
strtime_iso(&time, ISO_TIMESTAMP_T, buf, sizeof(buf));
break;
default:
errx(EXIT_FAILURE, _("unsupported time type"));

10
sys-utils/rfkill.c
View File

@ -223,7 +223,7 @@ static int rfkill_event(void)
{
struct rfkill_event event;
struct timeval tv;
char date_buf[ISO_8601_BUFSIZ];
char date_buf[ISO_BUFSIZ];
struct pollfd p;
int fd, n;
@ -253,12 +253,8 @@ static int rfkill_event(void)
continue;
gettimeofday(&tv, NULL);
strtimeval_iso(&tv,
ISO_8601_DATE |
ISO_8601_TIME |
ISO_8601_COMMAUSEC |
ISO_8601_TIMEZONE |
ISO_8601_SPACE, date_buf, sizeof(date_buf));
strtimeval_iso(&tv, ISO_TIMESTAMP_COMMA, date_buf,
sizeof(date_buf));
printf("%s: idx %u type %u op %u soft %u hard %u\n",
date_buf,
event.idx, event.type, event.op, event.soft, event.hard);

8
term-utils/script.c
View File

@ -472,9 +472,7 @@ static void do_io(struct script_control *ctl)
if (ctl->typescriptfp) {
strtime_iso(&tvec, ISO_8601_DATE | ISO_8601_TIME |
ISO_8601_TIMEZONE | ISO_8601_SPACE,
buf, sizeof(buf));
strtime_iso(&tvec, ISO_TIMESTAMP, buf, sizeof(buf));
fprintf(ctl->typescriptfp, _("Script started on %s\n"), buf);
}
gettime_monotonic(&ctl->oldtime);
@ -546,9 +544,7 @@ static void do_io(struct script_control *ctl)
if (ctl->typescriptfp) {
tvec = script_time((time_t *)NULL);
strtime_iso(&tvec, ISO_8601_DATE | ISO_8601_TIME |
ISO_8601_TIMEZONE | ISO_8601_SPACE,
buf, sizeof(buf));
strtime_iso(&tvec, ISO_TIMESTAMP, buf, sizeof(buf));
fprintf(ctl->typescriptfp, _("\nScript done on %s\n"), buf);
}
done(ctl);