From: Junio C Hamano <gitster@pobox•com>
To: Tanay Abhra <tanayabh@gmail•com>
Cc: git@vger•kernel.org, Ramkumar Ramachandra <artagnon@gmail•com>,
Matthieu Moy <Matthieu.Moy@grenoble-inp•fr>
Subject: Re: [PATCH v12 1/2] add `config_set` API for caching config-like files
Date: Thu, 24 Jul 2014 11:41:43 -0700 [thread overview]
Message-ID: <xmqqwqb28uqg.fsf@gitster.dls.corp.google.com> (raw)
In-Reply-To: <53D120FE.8000809@gmail.com> (Tanay Abhra's message of "Thu, 24 Jul 2014 20:36:38 +0530")
Tanay Abhra <tanayabh@gmail•com> writes:
> +int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
> +{
> + const char *value;
> + if (!git_configset_get_value(cs, key, &value))
> + return git_config_string(dest, key, value);
> + else
> + return 1;
> +}
> +
> +int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
> +{
> + const char *value;
> + if (!git_configset_get_value(cs, key, &value)) {
> + if (!value)
> + return config_error_nonbool(key);
> + *dest = xstrdup(value);
> + return 0;
> + }
> + else
> + return 1;
> +}
Hmm, do we really need duplicate and an almost identical
implementations?
I would have expected either one of these two (expecting the latter
more than the former from the discussion):
1. Because git_configset_get_string_const() returns a const string
not to be touched by the caller, it does not even xstrdup(),
while git_configset_get_string() does.
2. These behave identically, and the only reason we have two is
because some callers want to receive the string in "char *"
while others want to use "const char *".
If you were going route #1, then you would need duplicate but subtly
different implementations; get_string_const() variant would not be
calling git_config_string() because it does xstrdup() the value and
give the caller a new string the caller has to free.
If you were going route #2, the I would have expected there is only
one implementation, _get_string(), and _get_string_const() would
call it while casting the dest parameter it receives.
next prev parent reply other threads:[~2014-07-24 18:41 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-23 18:42 [PATCH 0/7] Rewrite `git_config()` using config-set API Tanay Abhra
2014-07-23 18:42 ` [PATCH 1/7] config.c: fix accuracy of line number in errors Tanay Abhra
2014-07-23 21:49 ` Junio C Hamano
2014-07-24 13:33 ` Tanay Abhra
2014-07-24 18:31 ` Junio C Hamano
2014-07-24 18:40 ` Tanay Abhra
2014-07-24 18:49 ` Matthieu Moy
2014-07-23 18:42 ` [PATCH 2/7] rewrite git_config() to use the config-set API Tanay Abhra
2014-07-23 19:55 ` Matthieu Moy
2014-07-23 19:58 ` Matthieu Moy
2014-07-23 21:58 ` Junio C Hamano
2014-07-24 6:43 ` Matthieu Moy
2014-07-23 18:42 ` [PATCH 3/7] add a test for semantic errors in config files Tanay Abhra
2014-07-23 19:55 ` Matthieu Moy
2014-07-23 22:11 ` Junio C Hamano
2014-07-24 13:56 ` Tanay Abhra
2014-07-24 14:05 ` Matthieu Moy
2014-07-24 16:41 ` Junio C Hamano
2014-07-23 18:42 ` [PATCH 4/7] add line number and file name info to `config_set` Tanay Abhra
2014-07-23 22:24 ` Junio C Hamano
2014-07-23 18:42 ` [PATCH 5/7] enforce `xfuncname` precedence over `funcname` Tanay Abhra
2014-07-23 20:05 ` Matthieu Moy
2014-07-23 21:04 ` Eric Sunshine
2014-07-23 22:34 ` Junio C Hamano
2014-07-24 6:39 ` Matthieu Moy
2014-07-24 17:09 ` Junio C Hamano
2014-07-24 18:33 ` Tanay Abhra
2014-07-24 18:47 ` Matthieu Moy
2014-07-24 19:04 ` John Keeping
2014-07-24 19:20 ` Junio C Hamano
2014-07-24 19:29 ` Tanay Abhra
2014-07-24 19:54 ` Junio C Hamano
2014-07-24 21:22 ` Ramsay Jones
2014-07-25 3:16 ` Tanay Abhra
2014-07-25 6:54 ` Matthieu Moy
2014-07-25 17:09 ` Junio C Hamano
2014-07-25 17:45 ` Matthieu Moy
2014-07-25 18:55 ` Junio C Hamano
2014-07-23 18:42 ` [PATCH 6/7] config: add `git_die_config()` to the config-set API Tanay Abhra
2014-07-23 18:42 ` [PATCH 7/7] Add tests for `git_config_get_string()` Tanay Abhra
2014-07-23 20:08 ` Matthieu Moy
2014-07-23 19:38 ` [PATCH 0/7] Rewrite `git_config()` using config-set API Matthieu Moy
2014-07-23 21:44 ` Junio C Hamano
2014-07-24 15:04 ` Tanay Abhra
2014-07-24 15:39 ` Matthieu Moy
2014-07-24 15:59 ` Tanay Abhra
2014-07-24 16:17 ` Matthieu Moy
2014-07-24 20:03 ` Junio C Hamano
2014-07-24 15:06 ` [PATCH v12 1/2] add `config_set` API for caching config-like files Tanay Abhra
2014-07-24 18:41 ` Junio C Hamano [this message]
2014-07-24 15:09 ` [PATCH v12 2/2] test-config: add tests for the config_set API Tanay Abhra
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