From: Junio C Hamano <gitster@pobox.com>
To: "Đoàn Trần Công Danh" <congdanhqx@gmail.com>
Cc: git@vger.kernel.org
Subject: Re: [PATCH v3 2/2] date.c: allow compact version of ISO-8601 datetime
Date: Wed, 22 Apr 2020 10:17:35 -0700 [thread overview]
Message-ID: <xmqqftcvjv80.fsf@gitster.c.googlers.com> (raw)
In-Reply-To: <225b6401bd1f7eddc245acfd2c4b37c50c978491.1587559135.git.congdanhqx@gmail.com> ("Đoàn Trần Công Danh"'s message of "Wed, 22 Apr 2020 20:15:53 +0700")
Đoàn Trần Công Danh <congdanhqx@gmail.com> writes:
> Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
> ---
> date.c | 22 ++++++++++++++++++++++
> t/t0006-date.sh | 3 +++
> 2 files changed, 25 insertions(+)
>
> diff --git a/date.c b/date.c
> index 62f23b4702..882242c2db 100644
> --- a/date.c
> +++ b/date.c
> @@ -672,6 +672,28 @@ static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt
> n++;
> } while (isdigit(date[n]));
>
> + /* 8 digits, compact style of ISO-8601's date: YYYYmmDD */
> + /* 6 digits, compact style of ISO-8601's time: HHMMSS */
> + if (n == 8 || n == 6) {
> + unsigned int num1 = num / 10000;
> + unsigned int num2 = (num % 10000) / 100;
> + unsigned int num3 = num % 100;
> + if (n == 8 && num1 > 1900 &&
> + num2 > 0 && num2 <= 12 &&
> + num3 > 0 && num3 <= 31) {
> + tm->tm_year = num1 - 1900;
> + tm->tm_mon = num2 - 1;
> + tm->tm_mday = num3;
> + } else if (n == 6 && num1 < 60 && num2 < 60 && num3 <= 60) {
> + tm->tm_hour = num1;
> + tm->tm_min = num2;
> + tm->tm_sec = num3;
> + if (*end == '.' && isdigit(end[1]))
> + strtoul(end + 1, &end, 10);
> + }
> + return end - date;
> + }
> +
Looks sensible except that on our planet, one day has only 24 hours
;-).
I think we should try to reuse existing helpers as much as possible
in date.c to avoid such stupid errors. During my review of [1/2] I
found is_date() would be a good thing to try reusing and also
extracted is_hms() as another candidate we could reuse.
> /* Four-digit year or a timezone? */
> if (n == 4) {
> if (num <= 1400 && *offset == -1) {
> diff --git a/t/t0006-date.sh b/t/t0006-date.sh
> index 80917c81c3..75ee9a96b8 100755
> --- a/t/t0006-date.sh
> +++ b/t/t0006-date.sh
> @@ -82,6 +82,9 @@ check_parse 2008-02-14 bad
> check_parse '2008-02-14 20:30:45' '2008-02-14 20:30:45 +0000'
> check_parse '2008-02-14 20:30:45 -0500' '2008-02-14 20:30:45 -0500'
> check_parse '2008.02.14 20:30:45 -0500' '2008-02-14 20:30:45 -0500'
> +check_parse '20080214T203045-04:00' '2008-02-14 20:30:45 -0400'
> +check_parse '20080214T203045 -04:00' '2008-02-14 20:30:45 -0400'
> +check_parse '20080214T203045.019-04:00' '2008-02-14 20:30:45 -0400'
> check_parse '2008-02-14 20:30:45.019-04:00' '2008-02-14 20:30:45 -0400'
> check_parse '2008-02-14 20:30:45 -0015' '2008-02-14 20:30:45 -0015'
> check_parse '2008-02-14 20:30:45 -5' '2008-02-14 20:30:45 +0000'
next prev parent reply other threads:[~2020-04-22 17:17 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-14 0:03 Mishandling of fractional seconds in ISO 8601 format brian m. carlson
2020-04-14 9:31 ` [PATCH 0/2] More ISO-8601 support Đoàn Trần Công Danh
2020-04-14 9:31 ` [PATCH 1/2] date.c: allow fractional second part of ISO-8601 Đoàn Trần Công Danh
2020-04-14 20:16 ` Jeff King
2020-04-15 2:15 ` Danh Doan
2020-04-14 20:17 ` Jeff King
2020-04-14 23:49 ` brian m. carlson
2020-04-15 2:17 ` Danh Doan
2020-04-14 9:31 ` [PATCH 2/2] date.c: allow compact version of ISO-8601 datetime Đoàn Trần Công Danh
2020-04-14 20:24 ` Jeff King
2020-04-15 2:12 ` Danh Doan
2020-04-15 15:03 ` Junio C Hamano
2020-04-15 15:41 ` Jeff King
2020-04-15 15:58 ` Junio C Hamano
2020-04-16 11:16 ` Danh Doan
2020-04-14 23:45 ` [PATCH 0/2] More ISO-8601 support brian m. carlson
2020-04-15 3:31 ` [PATCH v2 " Đoàn Trần Công Danh
2020-04-15 3:31 ` [PATCH v2 1/2] date.c: skip fractional second part of ISO-8601 Đoàn Trần Công Danh
2020-04-15 10:17 ` Torsten Bögershausen
2020-04-16 10:04 ` Danh Doan
2020-04-15 3:31 ` [PATCH v2 2/2] date.c: allow compact version of ISO-8601 datetime Đoàn Trần Công Danh
2020-04-22 13:15 ` [PATCH v3 0/2] More ISO-8601 support Đoàn Trần Công Danh
2020-04-22 13:15 ` [PATCH v3 1/2] date.c: skip fractional second part of ISO-8601 Đoàn Trần Công Danh
2020-04-22 17:05 ` Junio C Hamano
2020-04-23 1:18 ` Danh Doan
2020-04-23 19:28 ` Junio C Hamano
2020-04-23 20:41 ` Philip Oakley
2020-04-24 0:07 ` Danh Doan
2020-04-24 0:46 ` Junio C Hamano
2020-04-24 17:32 ` Philip Oakley
2020-04-24 17:30 ` Philip Oakley
2020-04-22 13:15 ` [PATCH v3 2/2] date.c: allow compact version of ISO-8601 datetime Đoàn Trần Công Danh
2020-04-22 17:17 ` Junio C Hamano [this message]
2020-04-23 1:20 ` Danh Doan
2020-04-23 13:52 ` [PATCH v4 0/4] More ISO-8601 support Đoàn Trần Công Danh
2020-04-23 13:52 ` [PATCH v4 1/4] date.c: s/is_date/set_date/ Đoàn Trần Công Danh
2020-04-23 20:08 ` Junio C Hamano
2020-04-23 13:52 ` [PATCH v4 2/4] date.c: validate and set time in a helper function Đoàn Trần Công Danh
2020-04-23 20:18 ` Junio C Hamano
2020-04-24 11:43 ` Danh Doan
2020-04-24 20:29 ` Junio C Hamano
2020-04-23 13:52 ` [PATCH v4 3/4] date.c: skip fractional second part of ISO-8601 Đoàn Trần Công Danh
2020-04-23 20:29 ` Junio C Hamano
2020-04-23 13:52 ` [PATCH v4 4/4] date.c: allow compact version of ISO-8601 datetime Đoàn Trần Công Danh
2020-04-24 15:07 ` [PATCH v5 0/4] More ISO-8601 support Đoàn Trần Công Danh
2020-04-24 15:07 ` [PATCH v5 1/4] date.c: s/is_date/set_date/ Đoàn Trần Công Danh
2020-04-24 15:07 ` [PATCH v5 2/4] date.c: validate and set time in a helper function Đoàn Trần Công Danh
2020-04-24 15:07 ` [PATCH v5 3/4] date.c: skip fractional second part of ISO-8601 Đoàn Trần Công Danh
2020-04-24 15:07 ` [PATCH v5 4/4] date.c: allow compact version of ISO-8601 datetime Đoàn Trần Công Danh
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