From: "René Scharfe" <l.s.r@web.de>
To: ZheNing Hu via GitGitGadget <gitgitgadget@gmail.com>,
git@vger.kernel.org
Cc: Jeff King <peff@peff.net>, Junio C Hamano <gitster@pobox.com>,
Christian Couder <chriscool@tuxfamily.org>,
Hariom Verma <hariom18599@gmail.com>,
ZheNing Hu <adlternative@gmail.com>
Subject: Re: [PATCH] [GSOC] ref-filter: add %(notes) format atom
Date: Sat, 1 May 2021 21:21:20 +0200 [thread overview]
Message-ID: <38083c1b-f92b-7624-67b7-3a5dcf213d79@web.de> (raw)
In-Reply-To: <pull.944.git.1619691880696.gitgitgadget@gmail.com>
Am 29.04.21 um 12:24 schrieb ZheNing Hu via GitGitGadget:
> From: ZheNing Hu <adlternative@gmail.com>
>
> Note that `--pretty="%N"` can view notes related
> to the commit. So add `%(notes)` to ref-filter
> seem is a good choice. This atom `%(notes)` view
> the notes associated with the ref, and support
> dereference.
I can't judge the usefulness of this feature because I don't use notes.
> Signed-off-by: ZheNing Hu <adlternative@gmail.com>
> ---
> [GSOC] ref-filter: add %(notes) format atom
>
> An important step in the GSOC project Use ref-filter formats in git
> cat-file is to integrate different format atoms into the ref-filter.
> Olga and Hariom have also made a lot of efforts in this area.
This is done to replace the custom format parser in git cat-file with
ref-filter in order to reduce code duplication, right?
> Currently, I noticed that there may be some format atoms in "pretty.c"
> that have not been migrated to ref-filter, such as --pretty="%N",
> --pretty="%(describe)".
git cat-file doesn't support pretty format atoms, so I'm not sure I see
the connection here.
> So in this patch, I tried to migrate --pretty=%N to --format=%(notes).
>
> Hope this will be hopeful !!!
>
> Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-944%2Fadlternative%2Fformat-notes-atom-v1
> Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-944/adlternative/format-notes-atom-v1
> Pull-Request: https://github.com/gitgitgadget/git/pull/944
>
> Documentation/git-for-each-ref.txt | 4 ++++
> ref-filter.c | 31 ++++++++++++++++++++++++++++--
> t/t6300-for-each-ref.sh | 10 ++++++++++
> 3 files changed, 43 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt
> index 2ae2478de706..07f037a16e13 100644
> --- a/Documentation/git-for-each-ref.txt
> +++ b/Documentation/git-for-each-ref.txt
> @@ -139,6 +139,9 @@ deltabase::
> given object, if it is stored as a delta. Otherwise it
> expands to the null object name (all zeroes).
>
> +notes::
> + The notes associated with the ref.
> +
> upstream::
> The name of a local ref which can be considered ``upstream''
> from the displayed ref. Respects `:short`, `:lstrip` and
> @@ -302,6 +305,7 @@ git for-each-ref --count=3 --sort='-*authordate' \
> Subject: %(*subject)
> Date: %(*authordate)
> Ref: %(*refname)
> +Notes: %(*notes)
>
> %(*body)
> ' 'refs/tags'
> diff --git a/ref-filter.c b/ref-filter.c
> index a0adb4551d87..42a5608a3056 100644
> --- a/ref-filter.c
> +++ b/ref-filter.c
> @@ -23,6 +23,7 @@
> #include "worktree.h"
> #include "hashmap.h"
> #include "strvec.h"
> +#include "run-command.h"
>
> static struct ref_msg {
> const char *gone;
> @@ -506,6 +507,7 @@ static struct {
> { "objectsize", SOURCE_OTHER, FIELD_ULONG, objectsize_atom_parser },
> { "objectname", SOURCE_OTHER, FIELD_STR, oid_atom_parser },
> { "deltabase", SOURCE_OTHER, FIELD_STR, deltabase_atom_parser },
> + { "notes", SOURCE_OTHER, FIELD_STR },
> { "tree", SOURCE_OBJ, FIELD_STR, oid_atom_parser },
> { "parent", SOURCE_OBJ, FIELD_STR, oid_atom_parser },
> { "numparent", SOURCE_OBJ, FIELD_ULONG },
> @@ -953,6 +955,24 @@ static int grab_oid(const char *name, const char *field, const struct object_id
> return 0;
> }
>
> +static int grab_notes(const struct object_id *oid, struct atom_value *v)
> +{
> + struct child_process cmd = CHILD_PROCESS_INIT;
> + struct strbuf out = STRBUF_INIT;
> + struct strbuf err = STRBUF_INIT;
> + const char *args[] = { "notes", "show", NULL };
> + int ret;
> +
> + cmd.git_cmd = 1;
> + strvec_pushv(&cmd.args, args);
> + strvec_push(&cmd.args, oid_to_hex(oid));
> + ret = pipe_command(&cmd, NULL, 0, &out, 0, &err, 0);
Nice prototype. Is it possible to avoid the overhead of calling git
notes as an external process by calling load_display_notes() once at
parse time and format_display_notes() for each item? Would it cause
conflicts for code that uses ref-filter and handles notes already?
> + strbuf_trim_trailing_newline(&out);
> + v->s = strbuf_detach(&out, NULL);
> + strbuf_release(&err);
> + return ret;
> +}
> +
> /* See grab_values */
> static void grab_common_values(struct atom_value *val, int deref, struct expand_data *oi)
> {
> @@ -975,8 +995,12 @@ static void grab_common_values(struct atom_value *val, int deref, struct expand_
> v->s = xstrfmt("%"PRIuMAX , (uintmax_t)oi->size);
> } else if (!strcmp(name, "deltabase"))
> v->s = xstrdup(oid_to_hex(&oi->delta_base_oid));
> - else if (deref)
> - grab_oid(name, "objectname", &oi->oid, v, &used_atom[i]);
> + else if (deref) {
> + if (!strcmp(name, "notes"))
> + grab_notes(&oi->oid, v);
> + else
> + grab_oid(name, "objectname", &oi->oid, v, &used_atom[i]);
> + }
> }
> }
>
> @@ -1767,6 +1791,9 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
> continue;
> } else if (!deref && grab_oid(name, "objectname", &ref->objectname, v, atom)) {
> continue;
> + } else if (!deref && !strcmp(name, "notes")) {
> + grab_notes(&ref->objectname, v);
> + continue;
> } else if (!strcmp(name, "HEAD")) {
> if (atom->u.head && !strcmp(ref->refname, atom->u.head))
> v->s = xstrdup("*");
next prev parent reply other threads:[~2021-05-01 19:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-29 10:24 [PATCH] [GSOC] ref-filter: add %(notes) format atom ZheNing Hu via GitGitGadget
2021-05-01 19:21 ` René Scharfe [this message]
2021-05-02 6:12 ` ZheNing Hu
2021-05-03 2:56 ` Junio C Hamano
2021-05-03 13:25 ` ZheNing Hu
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