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authorJunio C Hamano <gitster@pobox.com>2020-03-05 18:43:02 (GMT)
committerJunio C Hamano <gitster@pobox.com>2020-03-05 18:43:02 (GMT)
commit25063e2530e2fbdccf5d372a8ad80309421c9df1 (patch)
tree94ec8b4e66aacefa4217ddc5047bd4518719f093 /builtin
parentf4d7dfce4db1666173d0ef0bd058510f558aebc0 (diff)
parent6c69f2223394c200cce1289ac9200f781ef14da7 (diff)
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Merge branch 'mr/bisect-in-c-1'
Underlying machinery of "git bisect--helper" is being refactored into pieces that are more easily reused. * mr/bisect-in-c-1: bisect: libify `bisect_next_all` bisect: libify `handle_bad_merge_base` and its dependents bisect: libify `check_good_are_ancestors_of_bad` and its dependents bisect: libify `check_merge_bases` and its dependents bisect: libify `bisect_checkout` bisect: libify `exit_if_skipped_commits` to `error_if_skipped*` and its dependents bisect--helper: return error codes from `cmd_bisect__helper()` bisect: add enum to represent bisect returning codes bisect--helper: introduce new `decide_next()` function bisect: use the standard 'if (!var)' way to check for 0 bisect--helper: change `retval` to `res` bisect--helper: convert `vocab_*` char pointers to char arrays
Diffstat (limited to 'builtin')
-rw-r--r--builtin/bisect--helper.c123
1 files changed, 67 insertions, 56 deletions
diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
index 1718df7..c1c40b5 100644
--- a/builtin/bisect--helper.c
+++ b/builtin/bisect--helper.c
@@ -52,8 +52,8 @@ static void set_terms(struct bisect_terms *terms, const char *bad,
terms->term_bad = xstrdup(bad);
}
-static const char *vocab_bad = "bad|new";
-static const char *vocab_good = "good|old";
+static const char vocab_bad[] = "bad|new";
+static const char vocab_good[] = "good|old";
/*
* Check whether the string `term` belongs to the set of strings
@@ -206,31 +206,31 @@ static int bisect_write(const char *state, const char *rev,
struct object_id oid;
struct commit *commit;
FILE *fp = NULL;
- int retval = 0;
+ int res = 0;
if (!strcmp(state, terms->term_bad)) {
strbuf_addf(&tag, "refs/bisect/%s", state);
} else if (one_of(state, terms->term_good, "skip", NULL)) {
strbuf_addf(&tag, "refs/bisect/%s-%s", state, rev);
} else {
- retval = error(_("Bad bisect_write argument: %s"), state);
+ res = error(_("Bad bisect_write argument: %s"), state);
goto finish;
}
if (get_oid(rev, &oid)) {
- retval = error(_("couldn't get the oid of the rev '%s'"), rev);
+ res = error(_("couldn't get the oid of the rev '%s'"), rev);
goto finish;
}
if (update_ref(NULL, tag.buf, &oid, NULL, 0,
UPDATE_REFS_MSG_ON_ERR)) {
- retval = -1;
+ res = -1;
goto finish;
}
fp = fopen(git_path_bisect_log(), "a");
if (!fp) {
- retval = error_errno(_("couldn't open the file '%s'"), git_path_bisect_log());
+ res = error_errno(_("couldn't open the file '%s'"), git_path_bisect_log());
goto finish;
}
@@ -244,7 +244,7 @@ finish:
if (fp)
fclose(fp);
strbuf_release(&tag);
- return retval;
+ return res;
}
static int check_and_set_terms(struct bisect_terms *terms, const char *cmd)
@@ -291,26 +291,14 @@ static const char need_bisect_start_warning[] =
"You then need to give me at least one %s and %s revision.\n"
"You can use \"git bisect %s\" and \"git bisect %s\" for that.");
-static int bisect_next_check(const struct bisect_terms *terms,
- const char *current_term)
+static int decide_next(const struct bisect_terms *terms,
+ const char *current_term, int missing_good,
+ int missing_bad)
{
- int missing_good = 1, missing_bad = 1, retval = 0;
- const char *bad_ref = xstrfmt("refs/bisect/%s", terms->term_bad);
- const char *good_glob = xstrfmt("%s-*", terms->term_good);
-
- if (ref_exists(bad_ref))
- missing_bad = 0;
-
- for_each_glob_ref_in(mark_good, good_glob, "refs/bisect/",
- (void *) &missing_good);
-
if (!missing_good && !missing_bad)
- goto finish;
-
- if (!current_term) {
- retval = -1;
- goto finish;
- }
+ return 0;
+ if (!current_term)
+ return -1;
if (missing_good && !missing_bad &&
!strcmp(current_term, terms->term_good)) {
@@ -321,7 +309,7 @@ static int bisect_next_check(const struct bisect_terms *terms,
*/
warning(_("bisecting only with a %s commit"), terms->term_bad);
if (!isatty(0))
- goto finish;
+ return 0;
/*
* TRANSLATORS: Make sure to include [Y] and [n] in your
* translation. The program will only accept English input
@@ -329,21 +317,35 @@ static int bisect_next_check(const struct bisect_terms *terms,
*/
yesno = git_prompt(_("Are you sure [Y/n]? "), PROMPT_ECHO);
if (starts_with(yesno, "N") || starts_with(yesno, "n"))
- retval = -1;
- goto finish;
- }
- if (!is_empty_or_missing_file(git_path_bisect_start())) {
- retval = error(_(need_bad_and_good_revision_warning),
- vocab_bad, vocab_good, vocab_bad, vocab_good);
- } else {
- retval = error(_(need_bisect_start_warning),
- vocab_good, vocab_bad, vocab_good, vocab_bad);
+ return -1;
+ return 0;
}
-finish:
- free((void *) good_glob);
- free((void *) bad_ref);
- return retval;
+ if (!is_empty_or_missing_file(git_path_bisect_start()))
+ return error(_(need_bad_and_good_revision_warning),
+ vocab_bad, vocab_good, vocab_bad, vocab_good);
+ else
+ return error(_(need_bisect_start_warning),
+ vocab_good, vocab_bad, vocab_good, vocab_bad);
+}
+
+static int bisect_next_check(const struct bisect_terms *terms,
+ const char *current_term)
+{
+ int missing_good = 1, missing_bad = 1;
+ char *bad_ref = xstrfmt("refs/bisect/%s", terms->term_bad);
+ char *good_glob = xstrfmt("%s-*", terms->term_good);
+
+ if (ref_exists(bad_ref))
+ missing_bad = 0;
+
+ for_each_glob_ref_in(mark_good, good_glob, "refs/bisect/",
+ (void *) &missing_good);
+
+ free(good_glob);
+ free(bad_ref);
+
+ return decide_next(terms, current_term, missing_good, missing_bad);
}
static int get_terms(struct bisect_terms *terms)
@@ -397,7 +399,7 @@ static int bisect_terms(struct bisect_terms *terms, const char *option)
static int bisect_append_log_quoted(const char **argv)
{
- int retval = 0;
+ int res = 0;
FILE *fp = fopen(git_path_bisect_log(), "a");
struct strbuf orig_args = STRBUF_INIT;
@@ -405,25 +407,25 @@ static int bisect_append_log_quoted(const char **argv)
return -1;
if (fprintf(fp, "git bisect start") < 1) {
- retval = -1;
+ res = -1;
goto finish;
}
sq_quote_argv(&orig_args, argv);
if (fprintf(fp, "%s\n", orig_args.buf) < 1)
- retval = -1;
+ res = -1;
finish:
fclose(fp);
strbuf_release(&orig_args);
- return retval;
+ return res;
}
static int bisect_start(struct bisect_terms *terms, int no_checkout,
const char **argv, int argc)
{
int i, has_double_dash = 0, must_write_terms = 0, bad_seen = 0;
- int flags, pathspec_pos, retval = 0;
+ int flags, pathspec_pos, res = 0;
struct string_list revs = STRING_LIST_INIT_DUP;
struct string_list states = STRING_LIST_INIT_DUP;
struct strbuf start_head = STRBUF_INIT;
@@ -524,7 +526,7 @@ static int bisect_start(struct bisect_terms *terms, int no_checkout,
argv_array_pushl(&argv, "checkout", start_head.buf,
"--", NULL);
if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
- retval = error(_("checking out '%s' failed."
+ res = error(_("checking out '%s' failed."
" Try 'git bisect start "
"<valid-branch>'."),
start_head.buf);
@@ -572,12 +574,12 @@ static int bisect_start(struct bisect_terms *terms, int no_checkout,
if (no_checkout) {
if (get_oid(start_head.buf, &oid) < 0) {
- retval = error(_("invalid ref: '%s'"), start_head.buf);
+ res = error(_("invalid ref: '%s'"), start_head.buf);
goto finish;
}
if (update_ref(NULL, "BISECT_HEAD", &oid, NULL, 0,
UPDATE_REFS_MSG_ON_ERR)) {
- retval = -1;
+ res = -1;
goto finish;
}
}
@@ -589,26 +591,26 @@ static int bisect_start(struct bisect_terms *terms, int no_checkout,
for (i = 0; i < states.nr; i++)
if (bisect_write(states.items[i].string,
revs.items[i].string, terms, 1)) {
- retval = -1;
+ res = -1;
goto finish;
}
if (must_write_terms && write_terms(terms->term_bad,
terms->term_good)) {
- retval = -1;
+ res = -1;
goto finish;
}
- retval = bisect_append_log_quoted(argv);
- if (retval)
- retval = -1;
+ res = bisect_append_log_quoted(argv);
+ if (res)
+ res = -1;
finish:
string_list_clear(&revs, 0);
string_list_clear(&states, 0);
strbuf_release(&start_head);
strbuf_release(&bisect_names);
- return retval;
+ return res;
}
int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
@@ -664,7 +666,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
switch (cmdmode) {
case NEXT_ALL:
- return bisect_next_all(the_repository, prefix, no_checkout);
+ res = bisect_next_all(the_repository, prefix, no_checkout);
+ break;
case WRITE_TERMS:
if (argc != 2)
return error(_("--write-terms requires two arguments"));
@@ -711,5 +714,13 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
return error("BUG: unknown subcommand '%d'", cmdmode);
}
free_terms(&terms);
- return !!res;
+
+ /*
+ * Handle early success
+ * From check_merge_bases > check_good_are_ancestors_of_bad > bisect_next_all
+ */
+ if (res == BISECT_INTERNAL_SUCCESS_MERGE_BASE)
+ res = BISECT_OK;
+
+ return abs(res);
}