From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: Christian Couder <christian.couder@gmail.com>
Cc: git <git@vger.kernel.org>, Junio C Hamano <gitster@pobox.com>,
Anders Waldenborg <anders@0x63.nu>, Jeff King <peff@peff.net>,
Jonathan Tan <jonathantanmy@google.com>
Subject: Re: [PATCH 3/5] pretty format %(trailers): add a "keyonly"
Date: Sat, 05 Dec 2020 13:26:41 +0100 [thread overview]
Message-ID: <87mtysxwu6.fsf@evledraar.gmail.com> (raw)
In-Reply-To: <CAP8UFD1gTOKLs55ceVwsDW=uSyW4wx_9eF9Wra5KVP8B19Jx_Q@mail.gmail.com>
On Sat, Dec 05 2020, Christian Couder wrote:
> On Sat, Dec 5, 2020 at 2:39 AM Ævar Arnfjörð Bjarmason <avarab@gmail.com> wrote:
>>
>> Add support for a "keyonly". This allows for easier parsing out of the
>> key and value. Before if you didn't want to make assumptions about how
>> the key was formatted. You'd need to parse it out as e.g.:
>>
>> --pretty=format:'%H%x00%(trailers:separator=%x00%x00)' \
>> '%x00%(trailers:separator=%x00%x00,valueonly)'
>>
>> And then proceed to deduce keys by looking at those two and
>> subtracting the value plus the hardcoded ": " separator from the
>> non-valueonly %(trailers) line. Now it's possible to simply do:
>>
>> --pretty=format:'%H%x00%(trailers:separator=%x00%x00,keyonly)' \
>> '%x00%(trailers:separator=%x00%x00,valueonly)'
>>
>> Which at least reduces it to a state machine where you get N keys and
>> correlate them with N values. Even better would be to have a way to
>> change the ": " delimiter to something easily machine-readable (a key
>> might contain ": " too). A follow-up change will add support for that.
>
> Well explained.
>
>> diff --git a/trailer.c b/trailer.c
>> index b00b35ea0eb..40f31e4dfc2 100644
>> --- a/trailer.c
>> +++ b/trailer.c
>> @@ -1233,8 +1233,11 @@ static void format_trailer_info(struct strbuf *out,
>> if (opts->separator && out->len != origlen)
>> strbuf_addbuf(out, opts->separator);
>> if (!opts->value_only)
>> - strbuf_addf(out, "%s: ", tok.buf);
>> - strbuf_addbuf(out, &val);
>> + strbuf_addstr(out, tok.buf);
>
> Maybe `strbuf_addbuf(out, &tok);`
Much better, thanks.
>> + if (!opts->key_only && !opts->value_only)
>> + strbuf_addstr(out, ": ");
>> + if (!opts->key_only)
>> + strbuf_addbuf(out, &val);
>
> The above is probably correct, but it feels strange to write the key
> after the separator and the value, and that the key is in a variable
> called "val".
We write them in the order "key -> sep -> value". with the logic of:
if (!no_key)
write_key();
if (!no_sep)
write_sep();
if (!no_value)
write_value();
So the &val here really is the value part.
next prev parent reply other threads:[~2020-12-05 17:51 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-25 21:26 [PATCH 00/21] trailer fixes Anders Waldenborg
2020-10-25 21:26 ` [PATCH 01/21] trailer: change token_{from,matches}_item into taking conf_info Anders Waldenborg
2020-10-26 11:56 ` Christian Couder
2020-10-25 21:26 ` [PATCH 02/21] trailer: don't use 'struct arg_item' for storing config Anders Waldenborg
2020-10-25 21:26 ` [PATCH 03/21] doc: mention canonicalization in git i-t manual Anders Waldenborg
2020-10-26 12:14 ` Christian Couder
2020-10-25 21:26 ` [PATCH 04/21] pretty: allow using aliases in %(trailer:key=xyz) Anders Waldenborg
2020-10-26 12:38 ` Christian Couder
2020-10-25 21:26 ` [PATCH 05/21] trailer: rename 'free_all' to 'free_all_trailer_items' Anders Waldenborg
2020-10-26 12:42 ` Christian Couder
2020-11-10 19:52 ` Jeff King
2020-10-25 21:26 ` [PATCH 06/21] t4205: add test for trailer in log with nonstandard separator Anders Waldenborg
2020-10-26 12:43 ` Christian Couder
2020-11-09 22:12 ` Anders Waldenborg
2020-11-10 7:55 ` Christian Couder
2020-11-10 19:54 ` Jeff King
2020-10-25 21:26 ` [PATCH 07/21] trailer: simplify 'arg_item' lifetime Anders Waldenborg
2020-10-25 21:26 ` [PATCH 08/21] trailer: keep track of conf in trailer_item Anders Waldenborg
2020-11-10 19:58 ` Jeff King
2020-10-25 21:26 ` [PATCH 09/21] trailer: refactor print_tok_val into taking item Anders Waldenborg
2020-10-25 21:26 ` [PATCH 10/21] trailer: move trailer token canonicalization print time Anders Waldenborg
2020-10-25 21:26 ` [PATCH 11/21] trailer: remember separator used in input Anders Waldenborg
2020-10-25 21:26 ` [PATCH 12/21] trailer: handle configured nondefault separators explicitly Anders Waldenborg
2020-11-10 20:06 ` Jeff King
2020-10-25 21:26 ` [PATCH 13/21] trailer: add option to make canonicalization optional Anders Waldenborg
2020-11-10 20:10 ` Jeff King
2020-10-25 21:26 ` [PATCH 14/21] trailer: move skipping of blank lines to own loop when finding trailer Anders Waldenborg
2020-10-25 21:26 ` [PATCH 15/21] trailer: factor out classify_trailer_line Anders Waldenborg
2020-10-25 21:26 ` [PATCH 16/21] t7513: add failing test for configured trailing line classification Anders Waldenborg
2020-10-25 21:26 ` [PATCH 17/21] trailer: don't treat line with prefix of known trailer as known Anders Waldenborg
2020-11-10 20:16 ` Jeff King
2020-10-25 21:26 ` [PATCH 18/21] trailer: factor out config lookup to separate function Anders Waldenborg
2020-10-25 21:26 ` [PATCH 19/21] trailer: move config lookup out of parse_trailer Anders Waldenborg
2020-10-25 21:26 ` [PATCH 20/21] trailer: add failing tests for matching trailers against input Anders Waldenborg
2020-10-25 21:26 ` [PATCH 21/21] trailer: only do prefix matching for configured trailers on commandline Anders Waldenborg
2020-11-10 7:44 ` [PATCH 00/21] trailer fixes Christian Couder
2020-12-05 1:39 ` [PATCH 0/5] pretty format %(trailers): improve machine readability Ævar Arnfjörð Bjarmason
2020-12-05 18:18 ` Anders Waldenborg
2020-12-07 8:53 ` Ævar Arnfjörð Bjarmason
2020-12-06 0:24 ` [PATCH v2 " Ævar Arnfjörð Bjarmason
2020-12-09 15:52 ` [PATCH v3 " Ævar Arnfjörð Bjarmason
2020-12-10 10:48 ` Christian Couder
2020-12-10 19:00 ` Junio C Hamano
2020-12-09 15:52 ` [PATCH v3 1/5] pretty format %(trailers) test: split a long line Ævar Arnfjörð Bjarmason
2020-12-09 15:52 ` [PATCH v3 2/5] pretty format %(trailers) doc: avoid repetition Ævar Arnfjörð Bjarmason
2020-12-10 19:01 ` Junio C Hamano
2020-12-09 15:52 ` [PATCH v3 3/5] pretty-format %(trailers): fix broken standalone "valueonly" Ævar Arnfjörð Bjarmason
2020-12-09 15:52 ` [PATCH v3 4/5] pretty format %(trailers): add a "keyonly" Ævar Arnfjörð Bjarmason
2020-12-09 15:52 ` [PATCH v3 5/5] pretty format %(trailers): add a "key_value_separator" Ævar Arnfjörð Bjarmason
2020-12-06 0:24 ` [PATCH v2 1/5] pretty format %(trailers) test: split a long line Ævar Arnfjörð Bjarmason
2020-12-06 0:24 ` [PATCH v2 2/5] pretty format %(trailers) doc: avoid repetition Ævar Arnfjörð Bjarmason
2020-12-07 9:09 ` Christian Couder
2020-12-06 0:24 ` [PATCH v2 3/5] pretty-format %(trailers): fix broken standalone "valueonly" Ævar Arnfjörð Bjarmason
2020-12-06 0:24 ` [PATCH v2 4/5] pretty format %(trailers): add a "keyonly" Ævar Arnfjörð Bjarmason
2020-12-07 9:17 ` Christian Couder
2020-12-06 0:24 ` [PATCH v2 5/5] pretty format %(trailers): add a "key_value_separator" Ævar Arnfjörð Bjarmason
2020-12-05 1:39 ` [PATCH 1/5] pretty format %(trailers) test: split a long line Ævar Arnfjörð Bjarmason
2020-12-05 1:39 ` [PATCH 2/5] pretty format %(trailers): avoid needless repetition Ævar Arnfjörð Bjarmason
2020-12-05 5:43 ` Christian Couder
2020-12-05 1:39 ` [PATCH 3/5] pretty format %(trailers): add a "keyonly" Ævar Arnfjörð Bjarmason
2020-12-05 6:11 ` Christian Couder
2020-12-05 12:26 ` Ævar Arnfjörð Bjarmason [this message]
2020-12-05 1:39 ` [PATCH 4/5] pretty-format %(trailers): fix broken standalone "valueonly" Ævar Arnfjörð Bjarmason
2020-12-05 6:46 ` Christian Couder
2020-12-05 1:39 ` [PATCH 5/5] pretty format %(trailers): add a "key_value_separator" Ævar Arnfjörð Bjarmason
2020-12-05 7:13 ` Christian Couder
2020-12-05 8:49 ` Ævar Arnfjörð Bjarmason
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