From: Christian Couder <christian.couder@gmail.com>
To: ZheNing Hu via GitGitGadget <gitgitgadget@gmail.com>
Cc: git <git@vger.kernel.org>, "Junio C Hamano" <gitster@pobox.com>,
"Hariom Verma" <hariom18599@gmail.com>,
"Bagas Sanjaya" <bagasdotme@gmail.com>,
"Jeff King" <peff@peff.net>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"ZheNing Hu" <adlternative@gmail.com>
Subject: Re: [PATCH v3 08/10] [GSOC] cat-file: reuse ref-filter logic
Date: Mon, 21 Jun 2021 07:55:42 +0200 [thread overview]
Message-ID: <CAP8UFD18iumUEgayGxL612MmbK9_2uDpHz3i7aqJ5zYSh7skqg@mail.gmail.com> (raw)
In-Reply-To: <bd534a266a401a8edbf8c4d12a2d9e44fcc79d70.1624086181.git.gitgitgadget@gmail.com>
On Sat, Jun 19, 2021 at 9:03 AM ZheNing Hu via GitGitGadget
<gitgitgadget@gmail.com> wrote:
>
> From: ZheNing Hu <adlternative@gmail.com>
>
> In order to let cat-file use ref-filter logic, the following
> methods are used:
Maybe: s/the following methods are used/let's do the following/
> 1. Add `cat_file_mode` member in struct `ref_format`, this can
> help us reject atoms in verify_ref_format() which cat-file
> cannot use, e.g. `%(refname)`, `%(push)`, `%(upstream)`...
> 2. Change the type of member `format` in struct `batch_options`
> to `ref_format`, We can add format data in it.
Not sure what "We can add format data in it." means.
> 3. Let `batch_objects()` add atoms to format, and use
> `verify_ref_format()` to check atoms.
> 4. Use `has_object_file()` in `batch_one_object()` to check
> whether the input object exists.
> 5. Let get_object() return 1 and print "<oid> missing" instead
> of returning -1 and printing "missing object <oid> for <refname>",
> this can help `format_ref_array_item()` just report that the
> object is missing without letting Git exit.
> 6. Use `format_ref_array_item()` in `batch_object_write()` to
> get the formatted data corresponding to the object. If the
> return value of `format_ref_array_item()` is equals to zero,
> use `batch_write()` to print object data; else if the return
> value less than zero, use `die()` to print the error message
> and exit; else return value greater than zero, only print the
s/else return value greater/else if the return value is greater/
> error message, but not exit.
s/not exit/don't exit/
> 7. Use free_ref_array_item_value() to free ref_array_item's
> value.
That looks like a lot of changes in a single commit. I wonder if this
commit could be split.
> Most of the atoms in `for-each-ref --format` are now supported,
> such as `%(tree)`, `%(parent)`, `%(author)`, `%(tagger)`, `%(if)`,
> `%(then)`, `%(else)`, `%(end)`. But these atoms will be rejected:
> `%(refname)`, `%(symref)`, `%(upstream)`, `%(push)`, `%(worktreepath)`,
> `%(flag)`, `%(HEAD)`, because our objects don't have refname.
s/refname/a refname/
It might be worth talking a bit about possible performance changes.
[...]
> + ret = format_ref_array_item(&item, &opt->format, scratch, &err);
> + if (!ret) {
> + strbuf_addch(scratch, '\n');
> + batch_write(opt, scratch->buf, scratch->len);
> + } else if (ret < 0) {
> + die("%s\n", err.buf);
This if (ret < 0) could be checked first.
> + } else {
> + /* when ret > 0 , don't call die and print the err to stdout*/
I think it would be more helpful to tell what ret > 0 means, rather
than what we do below (which can easily be seen).
> + printf("%s\n", err.buf);
> + fflush(stdout);
> }
For example:
if (ret < 0) {
die("%s\n", err.buf);
if (ret) {
/* ret > 0 means ... */
printf("%s\n", err.buf);
fflush(stdout);
} else {
strbuf_addch(scratch, '\n');
batch_write(opt, scratch->buf, scratch->len);
}
> + free_ref_array_item_value(&item);
> + strbuf_release(&err);
> }
[...]
> +static int batch_objects(struct batch_options *opt, const struct option *options)
It's unfortunate that one argument is called "opt" and the other one
"options". I wonder if the first one could be called "batch" as it
seems to be called this way somewhere else.
> + if (!opt->format.format)
> + strbuf_addstr(&format, "%(objectname) %(objecttype) %(objectsize)");
> + else
> + strbuf_addstr(&format, opt->format.format);
If there is no reason for the condition to be (!X) over just (X), I
think the latter is a bit better.
> if (opt->print_contents)
> - data.info.typep = &data.type;
> + strbuf_addstr(&format, "\n%(raw)");
> + opt->format.format = format.buf;
I wonder if this should be:
opt->format.format = strbuf_detach(&format, NULL);
> + if (verify_ref_format(&opt->format))
> + usage_with_options(cat_file_usage, options);
[...]
> @@ -86,7 +87,7 @@ struct ref_format {
> int need_color_reset_at_eol;
> };
>
> -#define REF_FORMAT_INIT { NULL, NULL, 0, 0, -1 }
> +#define REF_FORMAT_INIT { NULL, NULL, 0, 0, 0, -1 }
Maybe this can already be changed to a designated initializer, like
Ævar suggested recently.
[...]
> +test_expect_success 'cat-file refs/heads/main refs/tags/testtag %(rest)' '
If this test is about checking that %(rest) works with both a branch
and a tag, it might be better to say it more explicitly.
> + cat >expected <<-EOF &&
> + 123 commit 123
> + 456 tag 456
> + EOF
> + git cat-file --batch-check="%(rest) %(objecttype) %(rest)" >actual <<-EOF &&
> + refs/heads/main 123
> + refs/tags/testtag 456
> + EOF
> + test_cmp expected actual
> +'
next prev parent reply other threads:[~2021-06-21 5:55 UTC|newest]
Thread overview: 121+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-12 11:14 [PATCH 0/8] [GSOC][RFC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-12 11:14 ` [PATCH 1/8] [GSOC] ref-filter: add obj-type check in grab contents ZheNing Hu via GitGitGadget
2021-06-17 7:04 ` Ævar Arnfjörð Bjarmason
2021-06-17 7:28 ` Junio C Hamano
2021-06-12 11:14 ` [PATCH 2/8] [GSOC] ref-filter: add %(raw) atom ZheNing Hu via GitGitGadget
2021-06-17 7:10 ` Ævar Arnfjörð Bjarmason
2021-06-17 7:34 ` Junio C Hamano
2021-06-17 9:22 ` ZheNing Hu
2021-06-17 14:37 ` Ævar Arnfjörð Bjarmason
2021-06-17 16:14 ` ZheNing Hu
2021-06-18 10:49 ` Ævar Arnfjörð Bjarmason
2021-06-18 13:47 ` Christian Couder
2021-06-12 11:14 ` [PATCH 3/8] [GSOC] ref-filter: use non-const ref_format in *_atom_parser() ZheNing Hu via GitGitGadget
2021-06-12 11:14 ` [PATCH 4/8] [GSOC] ref-filter: add %(rest) atom ZheNing Hu via GitGitGadget
2021-06-12 11:14 ` [PATCH 5/8] [GSOC] ref-filter: teach get_object() return useful value ZheNing Hu via GitGitGadget
2021-06-12 20:09 ` Christian Couder
2021-06-13 10:11 ` ZheNing Hu
2021-06-17 7:22 ` Ævar Arnfjörð Bjarmason
2021-06-17 10:01 ` ZheNing Hu
2021-06-12 11:14 ` [PATCH 6/8] [GSOC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-12 11:14 ` [PATCH 7/8] [GSOC] cat-file: reuse err buf in batch_objet_write() ZheNing Hu via GitGitGadget
2021-06-17 7:16 ` Ævar Arnfjörð Bjarmason
2021-06-17 8:05 ` ZheNing Hu
2021-06-12 11:14 ` [PATCH 8/8] [GSOC] cat-file: re-implement --textconv, --filters options ZheNing Hu via GitGitGadget
2021-06-17 7:18 ` Ævar Arnfjörð Bjarmason
2021-06-17 9:53 ` ZheNing Hu
2021-06-15 13:28 ` [PATCH v2 0/9] [GSOC][RFC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-15 13:28 ` [PATCH v2 1/9] [GSOC] ref-filter: add obj-type check in grab contents ZheNing Hu via GitGitGadget
2021-06-15 13:28 ` [PATCH v2 2/9] [GSOC] ref-filter: add %(raw) atom ZheNing Hu via GitGitGadget
2021-06-15 13:28 ` [PATCH v2 3/9] [GSOC] ref-filter: use non-const ref_format in *_atom_parser() ZheNing Hu via GitGitGadget
2021-06-15 13:29 ` [PATCH v2 4/9] [GSOC] ref-filter: add %(rest) atom ZheNing Hu via GitGitGadget
2021-06-15 13:29 ` [PATCH v2 5/9] [GSOC] ref-filter: teach get_object() return useful value ZheNing Hu via GitGitGadget
2021-06-16 7:36 ` Junio C Hamano
2021-06-17 7:23 ` ZheNing Hu
2021-06-15 13:29 ` [PATCH v2 6/9] [GSOC] ref-filter: introduce free_array_item_internal() function ZheNing Hu via GitGitGadget
2021-06-16 7:49 ` Junio C Hamano
2021-06-17 8:03 ` ZheNing Hu
2021-06-15 13:29 ` [PATCH v2 7/9] [GSOC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-15 13:29 ` [PATCH v2 8/9] [GSOC] cat-file: reuse err buf in batch_objet_write() ZheNing Hu via GitGitGadget
2021-06-15 13:29 ` [PATCH v2 9/9] [GSOC] cat-file: re-implement --textconv, --filters options ZheNing Hu via GitGitGadget
2021-06-16 7:29 ` [PATCH v2 0/9] [GSOC][RFC] cat-file: reuse ref-filter logic Junio C Hamano
2021-06-17 6:07 ` ZheNing Hu
2021-06-17 7:26 ` Ævar Arnfjörð Bjarmason
2021-06-17 10:02 ` ZheNing Hu
2021-06-19 7:02 ` [PATCH v3 00/10] " ZheNing Hu via GitGitGadget
2021-06-19 7:02 ` [PATCH v3 01/10] [GSOC] ref-filter: add obj-type check in grab contents ZheNing Hu via GitGitGadget
2021-06-19 7:02 ` [PATCH v3 02/10] [GSOC] ref-filter: add %(raw) atom ZheNing Hu via GitGitGadget
2021-06-19 7:02 ` [PATCH v3 03/10] [GSOC] ref-filter: --format=%(raw) re-support --perl ZheNing Hu via GitGitGadget
2021-06-19 7:02 ` [PATCH v3 04/10] [GSOC] ref-filter: use non-const ref_format in *_atom_parser() ZheNing Hu via GitGitGadget
2021-06-19 7:02 ` [PATCH v3 05/10] [GSOC] ref-filter: add %(rest) atom ZheNing Hu via GitGitGadget
2021-06-19 7:02 ` [PATCH v3 06/10] [GSOC] ref-filter: pass get_object() return value to their callers ZheNing Hu via GitGitGadget
2021-06-19 7:02 ` [PATCH v3 07/10] [GSOC] ref-filter: introduce free_ref_array_item_value() function ZheNing Hu via GitGitGadget
2021-06-19 7:02 ` [PATCH v3 08/10] [GSOC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-21 5:55 ` Christian Couder [this message]
2021-06-21 13:05 ` ZheNing Hu
2021-06-19 7:02 ` [PATCH v3 09/10] [GSOC] cat-file: reuse err buf in batch_object_write() ZheNing Hu via GitGitGadget
2021-06-19 7:03 ` [PATCH v3 10/10] [GSOC] cat-file: re-implement --textconv, --filters options ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 00/14] [GSOC][RFC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 01/14] [GSOC] ref-filter: add obj-type check in grab contents ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 02/14] [GSOC] ref-filter: add %(raw) atom ZheNing Hu via GitGitGadget
2021-06-24 4:14 ` Bagas Sanjaya
2021-06-24 8:23 ` ZheNing Hu
2021-06-22 3:20 ` [PATCH v4 03/14] [GSOC] ref-filter: --format=%(raw) re-support --perl ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 04/14] [GSOC] ref-filter: use non-const ref_format in *_atom_parser() ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 05/14] [GSOC] ref-filter: add %(rest) atom ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 06/14] [GSOC] ref-filter: pass get_object() return value to their callers ZheNing Hu via GitGitGadget
2021-06-24 4:02 ` Bagas Sanjaya
2021-06-22 3:20 ` [PATCH v4 07/14] [GSOC] ref-filter: introduce free_ref_array_item_value() function ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 08/14] [GSOC] ref-filter: add cat_file_mode in struct ref_format ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 09/14] [GSOC] ref-filter: modify the error message and value in get_object ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 10/14] [GSOC] cat-file: add has_object_file() check ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 11/14] [GSOC] cat-file: change batch_objects parameter name ZheNing Hu via GitGitGadget
2021-06-24 4:07 ` Bagas Sanjaya
2021-06-22 3:20 ` [PATCH v4 12/14] [GSOC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 13/14] [GSOC] cat-file: reuse err buf in batch_object_write() ZheNing Hu via GitGitGadget
2021-06-22 3:20 ` [PATCH v4 14/14] [GSOC] cat-file: re-implement --textconv, --filters options ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 00/15] [GSOC][RFC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 01/15] [GSOC] ref-filter: add obj-type check in grab contents ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 02/15] [GSOC] ref-filter: add %(raw) atom ZheNing Hu via GitGitGadget
2021-06-26 0:42 ` Bagas Sanjaya
2021-06-27 11:43 ` ZheNing Hu
2021-06-25 16:02 ` [PATCH v5 03/15] [GSOC] ref-filter: --format=%(raw) re-support --perl ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 04/15] [GSOC] ref-filter: use non-const ref_format in *_atom_parser() ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 05/15] [GSOC] ref-filter: add %(rest) atom ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 06/15] [GSOC] ref-filter: pass get_object() return value to their callers ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 07/15] [GSOC] ref-filter: introduce free_ref_array_item_value() function ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 08/15] [GSOC] ref-filter: add cat_file_mode in struct ref_format ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 09/15] [GSOC] ref-filter: modify the error message and value in get_object ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 10/15] [GSOC] cat-file: add has_object_file() check ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 11/15] [GSOC] cat-file: change batch_objects parameter name ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 12/15] [GSOC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-26 17:26 ` Hariom verma
2021-06-27 11:31 ` ZheNing Hu
2021-06-26 18:08 ` Hariom verma
2021-06-27 11:34 ` ZheNing Hu
2021-06-25 16:02 ` [PATCH v5 13/15] [GSOC] cat-file: reuse err buf in batch_object_write() ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 14/15] [GSOC] cat-file: re-implement --textconv, --filters options ZheNing Hu via GitGitGadget
2021-06-25 16:02 ` [PATCH v5 15/15] [GSOC] ref-filter: remove grab_oid() function ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 00/15] [GSOC][RFC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 01/15] [GSOC] ref-filter: add obj-type check in grab contents ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 02/15] [GSOC] ref-filter: add %(raw) atom ZheNing Hu via GitGitGadget
2021-06-28 6:49 ` Bagas Sanjaya
2021-06-27 12:35 ` [PATCH v6 03/15] [GSOC] ref-filter: --format=%(raw) re-support --perl ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 04/15] [GSOC] ref-filter: use non-const ref_format in *_atom_parser() ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 05/15] [GSOC] ref-filter: add %(rest) atom ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 06/15] [GSOC] ref-filter: pass get_object() return value to their callers ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 07/15] [GSOC] ref-filter: introduce free_ref_array_item_value() function ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 08/15] [GSOC] ref-filter: add cat_file_mode in struct ref_format ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 09/15] [GSOC] ref-filter: modify the error message and value in get_object ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 10/15] [GSOC] cat-file: add has_object_file() check ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 11/15] [GSOC] cat-file: change batch_objects parameter name ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 12/15] [GSOC] cat-file: reuse ref-filter logic ZheNing Hu via GitGitGadget
2021-06-28 7:46 ` Hariom verma
2021-06-28 13:51 ` ZheNing Hu
2021-06-27 12:35 ` [PATCH v6 13/15] [GSOC] cat-file: reuse err buf in batch_object_write() ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 14/15] [GSOC] cat-file: re-implement --textconv, --filters options ZheNing Hu via GitGitGadget
2021-06-27 12:35 ` [PATCH v6 15/15] [GSOC] ref-filter: remove grab_oid() function ZheNing Hu via GitGitGadget
2021-06-30 22:04 ` [PATCH v6 00/15] [GSOC][RFC] cat-file: reuse ref-filter logic Junio C Hamano
2021-07-01 12:39 ` ZheNing Hu
2021-07-01 14:17 ` Junio C Hamano
2021-07-09 10:04 ` ZheNing Hu
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