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ref-filter: implement '--contains' option

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'tag -l' and 'branch -l' have two different ways of finding
out if a certain ref contains a commit. Implement both these
methods in ref-filter and give the caller of ref-filter API
the option to pick which implementation to be used.

'branch -l' uses 'is_descendant_of()' from commit.c which is
left as the default implementation to be used.

'tag -l' uses a more specific algorithm since ffc4b80. This
implementation is used whenever the 'with_commit_tag_algo' bit
is set in 'struct ref_filter'.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Karthik Nayak
2015-07-07 21:36:16 +05:30
committed by Junio C Hamano
parent f266c9163b
commit ee2bd06b0f
3 changed files with 121 additions and 1 deletions
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3
ref-filter.h
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@ -44,6 +44,7 @@ struct ref_array {
struct ref_filter {
const char **name_patterns;
struct sha1_array points_at;
struct commit_list *with_commit;
enum {
REF_FILTER_MERGED_NONE = 0,
@ -51,6 +52,8 @@ struct ref_filter {
REF_FILTER_MERGED_OMIT
} merge;
struct commit *merge_commit;
unsigned int with_commit_tag_algo : 1;
};
struct ref_filter_cbdata {