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feat(third_party/git/date): add "dottime" format

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Adds dottime (as defined on https://dotti.me) as a timestamp format.

This format is designed to simplify working with timestamps across
many different timezones by keeping the timestamp format itself in
UTC (and indicating this with a dot character), but appending the
local offset.

This is implemented as a new format because the timestamp needs to be
rendered both as UTC and including the offset, an implementation using
a strftime formatting string is not sufficient.
This commit is contained in:
Vincent Ambo 2020-01-06 16:00:52 +00:00 • committed by Vincent Ambo
parent 7ef0d62730
commit 8082d87da3
5 changed files with 27 additions and 1 deletions
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17
third_party/git/date.c vendored
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@ -350,6 +350,21 @@ const char *show_date(timestamp_t time, int tz, const struct date_mode *mode)
tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec,
sign, tz / 100, tz % 100);
} else if (mode->type == DATE_DOTTIME) {
char sign = (tz >= 0) ? '+' : '-';
tz = abs(tz);
// Time is converted again without the timezone as the
// dottime format includes the zone only in offset
// position.
time_t t = gm_time_t(time, 0);
tm = gmtime(&t);
strbuf_addf(&timebuf, "%04d-%02d-%02dT%02d·%02d%c%02d%02d",
tm->tm_year + 1900,
tm->tm_mon + 1,
tm->tm_mday,
tm->tm_hour, tm->tm_min,
sign, 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,
@ -921,6 +936,8 @@ static enum date_mode_type parse_date_type(const char *format, const char **end)
return DATE_UNIX;
if (skip_prefix(format, "format", end))
return DATE_STRFTIME;
if (skip_prefix(format, "dottime", end))
return DATE_DOTTIME;
/*
* Please update $__git_log_date_formats in
* git-completion.bash when you add new formats.