Christian Couder <chriscool@xxxxxxxxxxxxx> writes:
> In the same way as there is for_each_ref() to
> iterate on refs, it might be useful to have
> for_each_mergetag() to iterate on the mergetags
> of a given commit.
>
> Signed-off-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
> ---
Heh, "might be useful" is an understatement ;-) We won't apply a
change that "might be useful" very lightly, but this refactoring
already uses the helper in existing code, showing that it *is*
useful, no?
Let's have this early in the series, or perhaps even independent of
the "replace" series.
Thanks.
> commit.c | 13 +++++++++++++
> commit.h | 5 +++++
> log-tree.c | 15 ++++-----------
> 3 files changed, 22 insertions(+), 11 deletions(-)
>
> diff --git a/commit.c b/commit.c
> index 54e157d..0f83ff7 100644
> --- a/commit.c
> +++ b/commit.c
> @@ -1348,6 +1348,19 @@ struct commit_extra_header *read_commit_extra_headers(struct commit *commit,
> return extra;
> }
>
> +void for_each_mergetag(each_mergetag_fn fn, struct commit *commit, void *data)
> +{
> + struct commit_extra_header *extra, *to_free;
> +
> + to_free = read_commit_extra_headers(commit, NULL);
> + for (extra = to_free; extra; extra = extra->next) {
> + if (strcmp(extra->key, "mergetag"))
> + continue; /* not a merge tag */
> + fn(commit, extra, data);
> + }
> + free_commit_extra_headers(to_free);
> +}
> +
> static inline int standard_header_field(const char *field, size_t len)
> {
> return ((len == 4 && !memcmp(field, "tree ", 5)) ||
> diff --git a/commit.h b/commit.h
> index 4234dae..c81ba85 100644
> --- a/commit.h
> +++ b/commit.h
> @@ -312,6 +312,11 @@ extern struct commit_extra_header *read_commit_extra_headers(struct commit *, co
>
> extern void free_commit_extra_headers(struct commit_extra_header *extra);
>
> +typedef void (*each_mergetag_fn)(struct commit *commit, struct commit_extra_header *extra,
> + void *cb_data);
> +
> +extern void for_each_mergetag(each_mergetag_fn fn, struct commit *commit, void *data);
> +
> struct merge_remote_desc {
> struct object *obj; /* the named object, could be a tag */
> const char *name;
> diff --git a/log-tree.c b/log-tree.c
> index 10e6844..706ed4c 100644
> --- a/log-tree.c
> +++ b/log-tree.c
> @@ -413,10 +413,11 @@ static int is_common_merge(const struct commit *commit)
> && !commit->parents->next->next);
> }
>
> -static void show_one_mergetag(struct rev_info *opt,
> +static void show_one_mergetag(struct commit *commit,
> struct commit_extra_header *extra,
> - struct commit *commit)
> + void *data)
> {
> + struct rev_info *opt = (struct rev_info *)data;
> unsigned char sha1[20];
> struct tag *tag;
> struct strbuf verify_message;
> @@ -463,15 +464,7 @@ static void show_one_mergetag(struct rev_info *opt,
>
> static void show_mergetag(struct rev_info *opt, struct commit *commit)
> {
> - struct commit_extra_header *extra, *to_free;
> -
> - to_free = read_commit_extra_headers(commit, NULL);
> - for (extra = to_free; extra; extra = extra->next) {
> - if (strcmp(extra->key, "mergetag"))
> - continue; /* not a merge tag */
> - show_one_mergetag(opt, extra, commit);
> - }
> - free_commit_extra_headers(to_free);
> + for_each_mergetag(show_one_mergetag, commit, opt);
> }
>
> void show_log(struct rev_info *opt)
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