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commit: add for_each_mergetag()

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In the same way as there is for_each_ref() to iterate on refs,
for_each_mergetag() allows the caller to iterate on the mergetags of
a given commit.  Use it to rewrite show_mergetag() used in "git log".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder
2014-07-07 08:35:37 +02:00
committed by Junio C Hamano
parent 6f92e5ff3c
commit 063da62b02
3 changed files with 22 additions and 11 deletions
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13
commit.c
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@ -1316,6 +1316,19 @@ 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)) ||