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bisect--helper: bisect_clean_state shell function in C

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Reimplement `bisect_clean_state` shell function in C and add a
`bisect-clean-state` subcommand to `git bisect--helper` to call it from
git-bisect.sh .

Using `--bisect-clean-state` subcommand is a measure to port shell
function to C so as to use the existing test suite. As more functions
are ported, this subcommand will be retired but its implementation  will
be called by bisect_reset() and bisect_start().

Also introduce a function `mark_for_removal` to store the refs which
need to be removed while iterating through the refs.

Mentored-by: Lars Schneider <larsxschneider@gmail.com>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Pranit Bauva
2017-09-29 06:49:39 +00:00
committed by Junio C Hamano
parent ecb3f3733c
commit fb71a32996
4 changed files with 56 additions and 24 deletions
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42
bisect.c
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@ -433,7 +433,12 @@ static int read_bisect_refs(void)
static GIT_PATH_FUNC(git_path_bisect_names, "BISECT_NAMES")
static GIT_PATH_FUNC(git_path_bisect_expected_rev, "BISECT_EXPECTED_REV")
static GIT_PATH_FUNC(git_path_bisect_ancestors_ok, "BISECT_ANCESTORS_OK")
static GIT_PATH_FUNC(git_path_bisect_run, "BISECT_RUN")
static GIT_PATH_FUNC(git_path_bisect_start, "BISECT_START")
static GIT_PATH_FUNC(git_path_bisect_log, "BISECT_LOG")
static GIT_PATH_FUNC(git_path_bisect_terms, "BISECT_TERMS")
static GIT_PATH_FUNC(git_path_head_name, "head-name")
static void read_bisect_paths(struct argv_array *array)
{
@ -1044,3 +1049,40 @@ int estimate_bisect_steps(int all)
return (e < 3 * x) ? n : n - 1;
}
static int mark_for_removal(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
struct string_list *refs = cb_data;
char *ref = xstrfmt("refs/bisect%s", refname);
string_list_append(refs, ref);
return 0;
}
int bisect_clean_state(void)
{
int result = 0;
/* There may be some refs packed during bisection */
struct string_list refs_for_removal = STRING_LIST_INIT_NODUP;
for_each_ref_in("refs/bisect", mark_for_removal, (void *) &refs_for_removal);
string_list_append(&refs_for_removal, xstrdup("BISECT_HEAD"));
result = delete_refs("bisect: remove", &refs_for_removal, REF_NODEREF);
refs_for_removal.strdup_strings = 1;
string_list_clear(&refs_for_removal, 0);
unlink_or_warn(git_path_bisect_expected_rev());
unlink_or_warn(git_path_bisect_ancestors_ok());
unlink_or_warn(git_path_bisect_log());
unlink_or_warn(git_path_bisect_names());
unlink_or_warn(git_path_bisect_run());
unlink_or_warn(git_path_bisect_terms());
/* Cleanup head-name if it got left by an old version of git-bisect */
unlink_or_warn(git_path_head_name());
/*
* Cleanup BISECT_START last to support the --no-checkout option
* introduced in the commit 4796e823a.
*/
unlink_or_warn(git_path_bisect_start());
return result;
}