[PATCH v3] date: make "iso-strict" conforming for the UTC timezone
- From
- Beat Bolli <bb@drbeat.li>
- Date
- Mar 13, 2024, 22:54 UTC
- Message-ID
- <20240313225423.11373-1-dev+git@drbeat.li>
- In-Reply-To
- <xmqqmsr169e5.fsf@gitster.g>
ISO 8601-1:2020-12 specifies that a zero timezone offset must be denoted with a "Z" suffix instead of the numeric "+00:00". Add the correponding special case to show_date() and a new test.
Changing an established output format which might be depended on by scripts is always problematic, but here we choose to adhere more closely to the published standard.
Reported-by: Michael Osipov <michael.osipov@innomotics.com> Signed-off-by: Beat Bolli <dev+git@drbeat.li> --- Changes from v2:
- changed the rationale according to Junio's feedback
Changes from v1:
- added a comment why the change is fine - removed the Link: trailer
date.c | 14 +++++++++----- t/t0006-date.sh | 1 + 2 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/date.c b/date.c index 619ada5b2044..44cf2221d81f 100644 --- a/date.c +++ b/date.c @@ -342,14 +342,18 @@ const char *show_date(timestamp_t time, int tz, const struct date_mode *mode) tm->tm_hour, tm->tm_min, tm->tm_sec, tz); else if (mode->type == DATE_ISO8601_STRICT) { - char sign = (tz >= 0) ? '+' : '-'; - tz = abs(tz); - strbuf_addf(&timebuf, "%04d-%02d-%02dT%02d:%02d:%02d%c%02d:%02d", + strbuf_addf(&timebuf, "%04d-%02d-%02dT%02d:%02d:%02d", tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, - tm->tm_hour, tm->tm_min, tm->tm_sec, - sign, tz / 100, tz % 100); + tm->tm_hour, tm->tm_min, tm->tm_sec); + if (tz == 0) { + strbuf_addch(&timebuf, 'Z'); + } else { + strbuf_addch(&timebuf, tz >= 0 ? '+' : '-'); + tz = abs(tz); + strbuf_addf(&timebuf, "%02d:%02d", tz / 100, tz % 100); + } } else if (mode->type == DATE_RFC2822) strbuf_addf(&timebuf, "%.3s, %d %.3s %d %02d:%02d:%02d %+05d", weekday_names[tm->tm_wday], tm->tm_mday, diff --git a/t/t0006-date.sh b/t/t0006-date.sh index e18b1602864e..1d228a981ee9 100755 --- a/t/t0006-date.sh +++ b/t/t0006-date.sh @@ -46,6 +46,7 @@ check_show () { TIME='1466000000 +0200' check_show iso8601 "$TIME" '2016-06-15 16:13:20 +0200' check_show iso8601-strict "$TIME" '2016-06-15T16:13:20+02:00' +check_show iso8601-strict "$(echo "$TIME" | sed 's/+0200$/+0000/')" '2016-06-15T14:13:20Z' check_show rfc2822 "$TIME" 'Wed, 15 Jun 2016 16:13:20 +0200' check_show short "$TIME" '2016-06-15' check_show default "$TIME" 'Wed Jun 15 16:13:20 2016 +0200'
-- 2.44.0