diff options
| -rw-r--r-- | Documentation/rev-list-options.txt | 3 | ||||
| -rw-r--r-- | date.c | 14 | ||||
| -rw-r--r-- | strbuf.c | 41 | ||||
| -rw-r--r-- | strbuf.h | 10 | ||||
| -rwxr-xr-x | t/t0006-date.sh | 16 |
5 files changed, 73 insertions, 11 deletions
diff --git a/Documentation/rev-list-options.txt b/Documentation/rev-list-options.txt index 9c44eae..a6cf9eb 100644 --- a/Documentation/rev-list-options.txt +++ b/Documentation/rev-list-options.txt @@ -769,7 +769,8 @@ timezone value. 1970). As with `--raw`, this is always in UTC and therefore `-local` has no effect. + -`--date=format:...` feeds the format `...` to your system `strftime`. +`--date=format:...` feeds the format `...` to your system `strftime`, +except for %z and %Z, which are handled internally. Use `--date=format:%c` to show the date in your system locale's preferred format. See the `strftime` manual for a complete list of format placeholders. When using `-local`, the correct syntax is @@ -70,6 +70,12 @@ static struct tm *time_to_tm(timestamp_t time, int tz) return gmtime(&t); } +static struct tm *time_to_tm_local(timestamp_t time) +{ + time_t t = time; + return localtime(&t); +} + /* * What value of "tz" was in effect back then at "time" in the * local timezone? @@ -214,7 +220,10 @@ const char *show_date(timestamp_t time, int tz, const struct date_mode *mode) return timebuf.buf; } - tm = time_to_tm(time, tz); + if (mode->local) + tm = time_to_tm_local(time); + else + tm = time_to_tm(time, tz); if (!tm) { tm = time_to_tm(0, 0); tz = 0; @@ -246,7 +255,8 @@ const char *show_date(timestamp_t time, int tz, const struct date_mode *mode) month_names[tm->tm_mon], tm->tm_year + 1900, tm->tm_hour, tm->tm_min, tm->tm_sec, tz); else if (mode->type == DATE_STRFTIME) - strbuf_addftime(&timebuf, mode->strftime_fmt, tm); + strbuf_addftime(&timebuf, mode->strftime_fmt, tm, tz, + mode->local ? NULL : ""); else strbuf_addf(&timebuf, "%.3s %.3s %d %02d:%02d:%02d %d%c%+05d", weekday_names[tm->tm_wday], @@ -785,14 +785,48 @@ char *xstrfmt(const char *fmt, ...) return ret; } -void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm) +void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm, + int tz_offset, const char *tz_name) { + struct strbuf munged_fmt = STRBUF_INIT; size_t hint = 128; size_t len; if (!*fmt) return; + /* + * There is no portable way to pass timezone information to + * strftime, so we handle %z and %Z here. + */ + for (;;) { + const char *percent = strchrnul(fmt, '%'); + strbuf_add(&munged_fmt, fmt, percent - fmt); + if (!*percent) + break; + fmt = percent + 1; + switch (*fmt) { + case '%': + strbuf_addstr(&munged_fmt, "%%"); + fmt++; + break; + case 'z': + strbuf_addf(&munged_fmt, "%+05d", tz_offset); + fmt++; + break; + case 'Z': + if (tz_name) { + strbuf_addstr(&munged_fmt, tz_name); + fmt++; + break; + } + /* FALLTHROUGH */ + default: + strbuf_addch(&munged_fmt, '%'); + } + } + fmt = munged_fmt.buf; + strbuf_grow(sb, hint); len = strftime(sb->buf + sb->len, sb->alloc - sb->len, fmt, tm); @@ -804,17 +838,16 @@ void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm) * output contains at least one character, and then drop the extra * character before returning. */ - struct strbuf munged_fmt = STRBUF_INIT; - strbuf_addf(&munged_fmt, "%s ", fmt); + strbuf_addch(&munged_fmt, ' '); while (!len) { hint *= 2; strbuf_grow(sb, hint); len = strftime(sb->buf + sb->len, sb->alloc - sb->len, munged_fmt.buf, tm); } - strbuf_release(&munged_fmt); len--; /* drop munged space */ } + strbuf_release(&munged_fmt); strbuf_setlen(sb, sb->len + len); } @@ -340,8 +340,14 @@ extern void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap); /** * Add the time specified by `tm`, as formatted by `strftime`. - */ -extern void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm); + * `tz_name` is used to expand %Z internally unless it's NULL. + * `tz_offset` is in decimal hhmm format, e.g. -600 means six hours west + * of Greenwich, and it's used to expand %z internally. However, tokens + * with modifiers (e.g. %Ez) are passed to `strftime`. + */ +extern void strbuf_addftime(struct strbuf *sb, const char *fmt, + const struct tm *tm, int tz_offset, + const char *tz_name); /** * Read a given size of data from a FILE* pointer to the buffer. diff --git a/t/t0006-date.sh b/t/t0006-date.sh index 42d4ea6..7ac9466 100755 --- a/t/t0006-date.sh +++ b/t/t0006-date.sh @@ -31,9 +31,11 @@ check_show () { format=$1 time=$2 expect=$3 - test_expect_success $4 "show date ($format:$time)" ' + prereqs=$4 + zone=$5 + test_expect_success $prereqs "show date ($format:$time)" ' echo "$time -> $expect" >expect && - test-date show:$format "$time" >actual && + TZ=${zone:-$TZ} test-date show:"$format" "$time" >actual && test_cmp expect actual ' } @@ -51,6 +53,16 @@ check_show iso-local "$TIME" '2016-06-15 14:13:20 +0000' check_show raw-local "$TIME" '1466000000 +0000' check_show unix-local "$TIME" '1466000000' +check_show 'format:%z' "$TIME" '+0200' +check_show 'format-local:%z' "$TIME" '+0000' +check_show 'format:%Z' "$TIME" '' +check_show 'format-local:%Z' "$TIME" 'UTC' +check_show 'format:%%z' "$TIME" '%z' +check_show 'format-local:%%z' "$TIME" '%z' + +check_show 'format:%Y-%m-%d %H:%M:%S' "$TIME" '2016-06-15 16:13:20' +check_show 'format-local:%Y-%m-%d %H:%M:%S' "$TIME" '2016-06-15 09:13:20' '' EST5 + # arbitrary time absurdly far in the future FUTURE="5758122296 -0400" check_show iso "$FUTURE" "2152-06-19 18:24:56 -0400" TIME_IS_64BIT,TIME_T_IS_64BIT |