From: Jonathan Tan <jonathantanmy@google.com>
To: emilyshaffer@google.com
Cc: git@vger.kernel.org, Jonathan Tan <jonathantanmy@google.com>
Subject: Re: [PATCH v7 03/17] hook: add list command
Date: Sat, 30 Jan 2021 19:10:11 -0800 [thread overview]
Message-ID: <20210131031011.1016240-1-jonathantanmy@google.com> (raw)
In-Reply-To: <20201222000220.1491091-4-emilyshaffer@google.com>
> Teach 'git hook list <hookname>', which checks the known configs in
> order to create an ordered list of hooks to run on a given hook event.
>
> Multiple commands can be specified for a given hook by providing
> multiple "hook.<hookname>.command = <path-to-hook>" lines. Hooks will be
> run in config order. If more properties need to be set on a given hook
> in the future, commands can also be specified by providing
> "hook.<hookname>.command = <hookcmd-name>", as well as a "[hookcmd
> <hookcmd-name>]" subsection; at minimum, this subsection must contain a
> "hookcmd.<hookcmd-name>.command = <path-to-hook>" line.
I learned later that this isn't true - in patch 6, the commit message
and one of the tests therein describe being able to skip a previously
inline command by making a hookcmd section of the same name and just
specifying "skip = true" there (without any command).
Maybe just delete the "at minimum" part.
> +static int list(int argc, const char **argv, const char *prefix)
> {
> - struct option builtin_hook_options[] = {
> + struct list_head *head, *pos;
> + struct hook *item;
You asked for review on nits too so here's one: "item" should be
declared in the list_for_each block. (That also makes it easier to see
that we don't need to free it.)
> diff --git a/hook.c b/hook.c
> new file mode 100644
> index 0000000000..937dc768c8
> --- /dev/null
> +++ b/hook.c
> @@ -0,0 +1,115 @@
> +#include "cache.h"
> +
> +#include "hook.h"
> +#include "config.h"
Usually we put all the includes together without any intervening blank
lines.
> +static void append_or_move_hook(struct list_head *head, const char *command)
> +{
> + struct list_head *pos = NULL, *tmp = NULL;
> + struct hook *to_add = NULL;
> +
> + /*
> + * remove the prior entry with this command; we'll replace it at the
> + * end.
> + */
> + list_for_each_safe(pos, tmp, head) {
> + struct hook *it = list_entry(pos, struct hook, list);
> + if (!strcmp(it->command.buf, command)) {
> + list_del(pos);
> + /* we'll simply move the hook to the end */
> + to_add = it;
"break" here?
> + }
> + }
> +
> + if (!to_add) {
> + /* adding a new hook, not moving an old one */
> + to_add = xmalloc(sizeof(struct hook));
Style is to write sizeof(*to_add), I think.
[snip]
> +struct hook_config_cb
> +{
> + struct strbuf *hookname;
struct declarations have "{" not on a line on its own.
Also, "hookname" could just be a char *?
> + struct list_head *list;
> +};
> +
> +static int hook_config_lookup(const char *key, const char *value, void *cb_data)
> +{
> + struct hook_config_cb *data = cb_data;
> + const char *hook_key = data->hookname->buf;
> + struct list_head *head = data->list;
> +
> + if (!strcmp(key, hook_key)) {
> + const char *command = value;
> + struct strbuf hookcmd_name = STRBUF_INIT;
> +
> + /* Check if a hookcmd with that name exists. */
> + strbuf_addf(&hookcmd_name, "hookcmd.%s.command", command);
> + git_config_get_value(hookcmd_name.buf, &command);
So we don't really care whether git_config_get_value returns 0 or 1 as
long as it doesn't touch "command" if there is no such hookcmd. That
fits with how git_config_get_value() is documented, so that's great.
Perhaps better to document as:
If a hookcmd.%s.command config exists, replace the command with the
value of that config. (If not, do nothing - git_config_get_value() is
documented to not overwrite the value argument in this case.)
> +
> + if (!command) {
> + strbuf_release(&hookcmd_name);
> + BUG("git_config_get_value overwrote a string it shouldn't have");
> + }
> +
> + /*
> + * TODO: implement an option-getting callback, e.g.
> + * get configs by pattern hookcmd.$value.*
> + * for each key+value, do_callback(key, value, cb_data)
> + */
> +
> + append_or_move_hook(head, command);
> +
> + strbuf_release(&hookcmd_name);
> + }
> +
> + return 0;
> +}
> +
> +struct list_head* hook_list(const struct strbuf* hookname)
"const char *hookname" should suffice?
Also, search for "* " and replace with " *" where applicable (also in
the .h file).
> +{
> + struct strbuf hook_key = STRBUF_INIT;
> + struct list_head *hook_head = xmalloc(sizeof(struct list_head));
> + struct hook_config_cb cb_data = { &hook_key, hook_head };
> +
> + INIT_LIST_HEAD(hook_head);
> +
> + if (!hookname)
> + return NULL;
> +
> + strbuf_addf(&hook_key, "hook.%s.command", hookname->buf);
> +
> + git_config(hook_config_lookup, (void*)&cb_data);
Do we need this void* cast?
> +
> + strbuf_release(&hook_key);
> + return hook_head;
> +}
> diff --git a/hook.h b/hook.h
> new file mode 100644
> index 0000000000..8ffc4f14b6
> --- /dev/null
> +++ b/hook.h
> @@ -0,0 +1,26 @@
> +#include "config.h"
> +#include "list.h"
> +#include "strbuf.h"
> +
> +struct hook
> +{
> + struct list_head list;
> + /*
> + * Config file which holds the hook.*.command definition.
> + * (This has nothing to do with the hookcmd.<name>.* configs.)
> + */
> + enum config_scope origin;
> + /* The literal command to run. */
> + struct strbuf command;
"char *" would suffice?
The tests look fine.
next prev parent reply other threads:[~2021-01-31 3:18 UTC|newest]
Thread overview: 170+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-21 18:54 [PATCH v2 0/4] propose config-based hooks Emily Shaffer
2020-05-21 18:54 ` [PATCH v2 1/4] doc: propose hooks managed by the config Emily Shaffer
2020-05-22 10:13 ` Phillip Wood
2020-06-09 20:26 ` Emily Shaffer
2020-05-21 18:54 ` [PATCH v2 2/4] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-05-21 18:54 ` [PATCH v2 3/4] hook: add list command Emily Shaffer
2020-05-22 10:27 ` Phillip Wood
2020-06-09 21:49 ` Emily Shaffer
2020-08-17 13:36 ` Phillip Wood
2020-05-24 23:00 ` Johannes Schindelin
2020-05-27 23:37 ` Emily Shaffer
2020-05-21 18:54 ` [PATCH v2 4/4] hook: add --porcelain to " Emily Shaffer
2020-05-24 23:00 ` Johannes Schindelin
2020-05-25 0:29 ` Johannes Schindelin
2020-07-28 22:24 ` [PATCH v3 0/6] propose config-based hooks Emily Shaffer
2020-07-28 22:24 ` [PATCH v3 1/6] doc: propose hooks managed by the config Emily Shaffer
2020-07-28 22:24 ` [PATCH v3 2/6] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-07-28 22:24 ` [PATCH v3 3/6] hook: add list command Emily Shaffer
2020-07-28 22:24 ` [PATCH v3 4/6] hook: add --porcelain to " Emily Shaffer
2020-07-28 22:24 ` [RFC PATCH v3 5/6] parse-options: parse into argv_array Emily Shaffer
2020-07-29 19:33 ` Junio C Hamano
2020-07-30 23:41 ` Junio C Hamano
2020-07-28 22:24 ` [RFC PATCH v3 6/6] hook: add 'run' subcommand Emily Shaffer
2020-09-09 0:49 ` [PATCH v4 0/9] propose config-based hooks Emily Shaffer
2020-09-09 0:49 ` [PATCH v4 1/9] doc: propose hooks managed by the config Emily Shaffer
2020-09-23 22:59 ` Jonathan Tan
2020-09-24 21:54 ` Emily Shaffer
2020-10-07 9:23 ` Ævar Arnfjörð Bjarmason
2020-10-22 0:58 ` Emily Shaffer
2020-10-23 19:10 ` Ævar Arnfjörð Bjarmason
2020-10-29 15:38 ` Emily Shaffer
2020-10-29 20:04 ` Ævar Arnfjörð Bjarmason
2020-09-09 0:49 ` [PATCH v4 2/9] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-10-05 23:24 ` Jonathan Nieder
2020-10-06 19:06 ` Emily Shaffer
2020-09-09 0:49 ` [PATCH v4 3/9] hook: add list command Emily Shaffer
2020-09-11 13:27 ` Phillip Wood
2020-09-11 16:51 ` Emily Shaffer
2020-09-23 23:04 ` Jonathan Tan
2020-10-06 20:46 ` Emily Shaffer
2020-09-27 19:23 ` Martin Ågren
2020-10-06 20:20 ` Emily Shaffer
2020-10-05 23:27 ` Jonathan Nieder
2020-09-09 0:49 ` [PATCH v4 4/9] hook: add --porcelain to " Emily Shaffer
2020-09-28 19:29 ` Josh Steadmon
2020-09-09 0:49 ` [PATCH v4 5/9] parse-options: parse into strvec Emily Shaffer
2020-10-05 23:30 ` Jonathan Nieder
2020-10-06 4:49 ` Junio C Hamano
2020-09-09 0:49 ` [PATCH v4 6/9] hook: add 'run' subcommand Emily Shaffer
2020-09-11 13:30 ` Phillip Wood
2020-09-28 19:29 ` Josh Steadmon
2020-10-05 23:39 ` Jonathan Nieder
2020-10-06 22:57 ` Emily Shaffer
2020-09-09 0:49 ` [PATCH v4 7/9] hook: replace run-command.h:find_hook Emily Shaffer
2020-09-09 20:32 ` Junio C Hamano
2020-09-10 19:08 ` Emily Shaffer
2020-09-23 23:20 ` Jonathan Tan
2020-10-05 23:42 ` Jonathan Nieder
2020-09-09 0:49 ` [PATCH v4 8/9] commit: use config-based hooks Emily Shaffer
2020-09-10 13:50 ` Phillip Wood
2020-09-10 22:21 ` Junio C Hamano
2020-09-23 23:47 ` Jonathan Tan
2020-10-05 21:27 ` Emily Shaffer
2020-10-05 23:48 ` Jonathan Nieder
2020-10-06 19:08 ` Emily Shaffer
2020-09-09 0:49 ` [PATCH v4 9/9] run_commit_hook: take strvec instead of varargs Emily Shaffer
2020-09-10 14:16 ` Phillip Wood
2020-09-11 13:20 ` Phillip Wood
2020-09-09 21:04 ` [PATCH v4 0/9] propose config-based hooks Junio C Hamano
2020-10-14 23:24 ` [PATCH v5 0/8] propose config-based hooks (part I) Emily Shaffer
2020-10-14 23:24 ` [PATCH v5 1/8] doc: propose hooks managed by the config Emily Shaffer
2020-10-15 16:31 ` Ævar Arnfjörð Bjarmason
2020-10-16 17:29 ` Junio C Hamano
2020-10-21 23:37 ` Emily Shaffer
2020-10-14 23:24 ` [PATCH v5 2/8] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-10-14 23:24 ` [PATCH v5 3/8] hook: add list command Emily Shaffer
2020-10-14 23:24 ` [PATCH v5 4/8] hook: include hookdir hook in list Emily Shaffer
2020-10-14 23:24 ` [PATCH v5 5/8] hook: implement hookcmd.<name>.skip Emily Shaffer
2020-10-14 23:24 ` [PATCH v5 6/8] parse-options: parse into strvec Emily Shaffer
2020-10-14 23:24 ` [PATCH v5 7/8] hook: add 'run' subcommand Emily Shaffer
2020-10-14 23:24 ` [PATCH v5 8/8] hook: replace find_hook() with hook_exists() Emily Shaffer
2020-12-05 1:45 ` [PATCH v6 00/17] propose config-based hooks (part I) Emily Shaffer
2020-12-05 1:45 ` [PATCH 01/17] doc: propose hooks managed by the config Emily Shaffer
2020-12-05 1:45 ` [PATCH 02/17] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-12-05 1:45 ` [PATCH 03/17] hook: add list command Emily Shaffer
2020-12-05 1:45 ` [PATCH 04/17] hook: include hookdir hook in list Emily Shaffer
2020-12-05 1:45 ` [PATCH 05/17] hook: respect hook.runHookDir Emily Shaffer
2020-12-05 1:45 ` [PATCH 06/17] hook: implement hookcmd.<name>.skip Emily Shaffer
2020-12-05 1:45 ` [PATCH 07/17] parse-options: parse into strvec Emily Shaffer
2020-12-05 1:45 ` [PATCH 08/17] hook: add 'run' subcommand Emily Shaffer
2020-12-11 10:15 ` Phillip Wood
2020-12-15 21:41 ` Emily Shaffer
2020-12-05 1:45 ` [PATCH 09/17] hook: replace find_hook() with hook_exists() Emily Shaffer
2020-12-05 1:46 ` [PATCH 10/17] hook: support passing stdin to hooks Emily Shaffer
2020-12-05 1:46 ` [PATCH 11/17] run-command: allow stdin for run_processes_parallel Emily Shaffer
2020-12-05 1:46 ` [PATCH 12/17] hook: allow parallel hook execution Emily Shaffer
2020-12-05 1:46 ` [PATCH 13/17] hook: allow specifying working directory for hooks Emily Shaffer
2020-12-05 1:46 ` [PATCH 14/17] run-command: add stdin callback for parallelization Emily Shaffer
2020-12-05 1:46 ` [PATCH 15/17] hook: provide stdin by string_list or callback Emily Shaffer
2020-12-08 21:09 ` SZEDER Gábor
2020-12-08 22:11 ` Emily Shaffer
2020-12-05 1:46 ` [PATCH 16/17] run-command: allow capturing of collated output Emily Shaffer
2020-12-05 1:46 ` [PATCH 17/17] hooks: allow callers to capture output Emily Shaffer
2020-12-16 0:34 ` [PATCH v6 00/17] propose config-based hooks (part I) Josh Steadmon
2020-12-16 0:56 ` Junio C Hamano
2020-12-16 20:16 ` Emily Shaffer
2020-12-16 23:32 ` Junio C Hamano
2020-12-18 2:07 ` Emily Shaffer
2020-12-18 5:29 ` Junio C Hamano
2020-12-22 0:02 ` [PATCH v7 " Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 01/17] doc: propose hooks managed by the config Emily Shaffer
2021-01-23 15:38 ` Ævar Arnfjörð Bjarmason
2021-01-29 23:52 ` Emily Shaffer
2021-02-01 22:11 ` Junio C Hamano
2021-03-10 19:30 ` Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 02/17] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 03/17] hook: add list command Emily Shaffer
2021-01-31 3:10 ` Jonathan Tan [this message]
2021-02-09 21:06 ` Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 04/17] hook: include hookdir hook in list Emily Shaffer
2021-01-31 3:20 ` Jonathan Tan
2021-02-09 22:05 ` Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 05/17] hook: respect hook.runHookDir Emily Shaffer
2021-01-31 3:35 ` Jonathan Tan
2021-02-09 22:31 ` Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 06/17] hook: implement hookcmd.<name>.skip Emily Shaffer
2021-01-31 3:40 ` Jonathan Tan
2021-02-09 22:57 ` Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 07/17] parse-options: parse into strvec Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 08/17] hook: add 'run' subcommand Emily Shaffer
2021-01-31 4:22 ` Jonathan Tan
2021-02-11 22:44 ` Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 09/17] hook: replace find_hook() with hook_exists() Emily Shaffer
2021-01-31 4:39 ` Jonathan Tan
2021-02-12 22:15 ` Emily Shaffer
2021-02-18 22:23 ` Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 10/17] hook: support passing stdin to hooks Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 11/17] run-command: allow stdin for run_processes_parallel Emily Shaffer
2021-02-01 5:38 ` Jonathan Tan
2021-02-19 20:23 ` Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 12/17] hook: allow parallel hook execution Emily Shaffer
2021-02-01 6:04 ` Jonathan Tan
2021-02-22 21:46 ` Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 13/17] hook: allow specifying working directory for hooks Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 14/17] run-command: add stdin callback for parallelization Emily Shaffer
2021-02-01 6:51 ` Jonathan Tan
2021-02-22 23:38 ` Emily Shaffer
2021-02-23 19:33 ` Jonathan Tan
2021-03-10 18:24 ` Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 15/17] hook: provide stdin by string_list or callback Emily Shaffer
2021-02-01 7:04 ` Jonathan Tan
2021-02-23 19:52 ` Emily Shaffer
2021-02-25 20:56 ` Jonathan Tan
2021-03-02 1:47 ` Emily Shaffer
2021-03-02 23:33 ` Jonathan Tan
2020-12-22 0:02 ` [PATCH v7 16/17] run-command: allow capturing of collated output Emily Shaffer
2020-12-22 0:02 ` [PATCH v7 17/17] hooks: allow callers to capture output Emily Shaffer
2020-12-22 2:11 ` [PATCH v7 00/17] propose config-based hooks (part I) Junio C Hamano
2020-12-28 18:34 ` Emily Shaffer
2020-12-28 22:50 ` Junio C Hamano
2020-12-28 22:37 ` [PATCH v3 18/17] doc: make git-hook.txt point of truth Emily Shaffer
2020-12-28 22:39 ` Emily Shaffer
2021-01-29 23:59 ` [PATCH v7 00/17] propose config-based hooks (part I) Emily Shaffer
2021-02-16 19:46 ` Josh Steadmon
2021-02-16 22:47 ` Junio C Hamano
2021-02-17 21:21 ` Josh Steadmon
2021-02-17 23:07 ` Junio C Hamano
2021-02-25 19:50 ` Junio C Hamano
2021-03-01 21:51 ` Emily Shaffer
2021-03-01 22:19 ` Junio C Hamano
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