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commit: add for_each_mergetag() 

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
View File

@ -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)) ||

5
commit.h
View File

@ -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;

15
log-tree.c
View File

@ -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)