static const char *argv_checkout[] = {"checkout", "-q", NULL, "--", NULL};
static const char *argv_show_branch[] = {"show-branch", NULL, NULL};
-static const char *argv_update_ref[] = {"update-ref", "--no-deref", "BISECT_HEAD", NULL, NULL};
+
+static const char *term_bad;
+static const char *term_good;
/* Remember to update object flag allocation in object.h */
#define COUNTED (1u<<16)
static int register_ref(const char *refname, const struct object_id *oid,
int flags, void *cb_data)
{
- if (!strcmp(refname, "bad")) {
+ struct strbuf good_prefix = STRBUF_INIT;
+ strbuf_addstr(&good_prefix, term_good);
+ strbuf_addstr(&good_prefix, "-");
+
+ if (!strcmp(refname, term_bad)) {
current_bad_oid = xmalloc(sizeof(*current_bad_oid));
oidcpy(current_bad_oid, oid);
- } else if (starts_with(refname, "good-")) {
+ } else if (starts_with(refname, good_prefix.buf)) {
sha1_array_append(&good_revs, oid->hash);
} else if (starts_with(refname, "skip-")) {
sha1_array_append(&skipped_revs, oid->hash);
}
+ strbuf_release(&good_prefix);
+
return 0;
}
return for_each_ref_in("refs/bisect/", register_ref, NULL);
}
+static GIT_PATH_FUNC(git_path_bisect_names, "BISECT_NAMES")
+static GIT_PATH_FUNC(git_path_bisect_expected_rev, "BISECT_EXPECTED_REV")
+
static void read_bisect_paths(struct argv_array *array)
{
struct strbuf str = STRBUF_INIT;
- const char *filename = git_path("BISECT_NAMES");
+ const char *filename = git_path_bisect_names();
FILE *fp = fopen(filename, "r");
if (!fp)
return;
printf("There are only 'skip'ped commits left to test.\n"
- "The first bad commit could be any of:\n");
+ "The first %s commit could be any of:\n", term_bad);
print_commit_list(tried, "%s\n", "%s\n");
if (bad)
printf("%s\n", oid_to_hex(bad));
static int is_expected_rev(const struct object_id *oid)
{
- const char *filename = git_path("BISECT_EXPECTED_REV");
+ const char *filename = git_path_bisect_expected_rev();
struct stat st;
struct strbuf str = STRBUF_INIT;
FILE *fp;
return res;
}
-static void mark_expected_rev(char *bisect_rev_hex)
-{
- int len = strlen(bisect_rev_hex);
- const char *filename = git_path("BISECT_EXPECTED_REV");
- int fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0600);
-
- if (fd < 0)
- die_errno("could not create file '%s'", filename);
-
- bisect_rev_hex[len] = '\n';
- write_or_die(fd, bisect_rev_hex, len + 1);
- bisect_rev_hex[len] = '\0';
-
- if (close(fd) < 0)
- die("closing file %s: %s", filename, strerror(errno));
-}
-
-static int bisect_checkout(char *bisect_rev_hex, int no_checkout)
+static int bisect_checkout(const unsigned char *bisect_rev, int no_checkout)
{
+ char bisect_rev_hex[GIT_SHA1_HEXSZ + 1];
- mark_expected_rev(bisect_rev_hex);
+ memcpy(bisect_rev_hex, sha1_to_hex(bisect_rev), GIT_SHA1_HEXSZ + 1);
+ update_ref(NULL, "BISECT_EXPECTED_REV", bisect_rev, NULL, 0, UPDATE_REFS_DIE_ON_ERR);
argv_checkout[2] = bisect_rev_hex;
if (no_checkout) {
- argv_update_ref[3] = bisect_rev_hex;
- if (run_command_v_opt(argv_update_ref, RUN_GIT_CMD))
- die("update-ref --no-deref HEAD failed on %s",
- bisect_rev_hex);
+ update_ref(NULL, "BISECT_HEAD", bisect_rev, NULL, 0, UPDATE_REFS_DIE_ON_ERR);
} else {
int res;
res = run_command_v_opt(argv_checkout, RUN_GIT_CMD);
if (is_expected_rev(current_bad_oid)) {
char *bad_hex = oid_to_hex(current_bad_oid);
char *good_hex = join_sha1_array_hex(&good_revs, ' ');
-
- fprintf(stderr, "The merge base %s is bad.\n"
- "This means the bug has been fixed "
- "between %s and [%s].\n",
- bad_hex, bad_hex, good_hex);
-
+ if (!strcmp(term_bad, "bad") && !strcmp(term_good, "good")) {
+ fprintf(stderr, "The merge base %s is bad.\n"
+ "This means the bug has been fixed "
+ "between %s and [%s].\n",
+ bad_hex, bad_hex, good_hex);
+ } else if (!strcmp(term_bad, "new") && !strcmp(term_good, "old")) {
+ fprintf(stderr, "The merge base %s is new.\n"
+ "The property has changed "
+ "between %s and [%s].\n",
+ bad_hex, bad_hex, good_hex);
+ } else {
+ fprintf(stderr, "The merge base %s is %s.\n"
+ "This means the first '%s' commit is "
+ "between %s and [%s].\n",
+ bad_hex, term_bad, term_good, bad_hex, good_hex);
+ }
exit(3);
}
- fprintf(stderr, "Some good revs are not ancestor of the bad rev.\n"
+ fprintf(stderr, "Some %s revs are not ancestor of the %s rev.\n"
"git bisect cannot work properly in this case.\n"
- "Maybe you mistake good and bad revs?\n");
+ "Maybe you mistook %s and %s revs?\n",
+ term_good, term_bad, term_good, term_bad);
exit(1);
}
warning("the merge base between %s and [%s] "
"must be skipped.\n"
- "So we cannot be sure the first bad commit is "
+ "So we cannot be sure the first %s commit is "
"between %s and %s.\n"
"We continue anyway.",
- bad_hex, good_hex, mb_hex, bad_hex);
+ bad_hex, good_hex, term_bad, mb_hex, bad_hex);
free(good_hex);
}
/*
- * "check_merge_bases" checks that merge bases are not "bad".
+ * "check_merge_bases" checks that merge bases are not "bad" (or "new").
*
- * - If one is "bad", it means the user assumed something wrong
+ * - If one is "bad" (or "new"), it means the user assumed something wrong
* and we must exit with a non 0 error code.
- * - If one is "good", that's good, we have nothing to do.
+ * - If one is "good" (or "old"), that's good, we have nothing to do.
* - If one is "skipped", we can't know but we should warn.
* - If we don't know, we should check it out and ask the user to test.
*/
handle_skipped_merge_base(mb);
} else {
printf("Bisecting: a merge base must be tested\n");
- exit(bisect_checkout(sha1_to_hex(mb), no_checkout));
+ exit(bisect_checkout(mb, no_checkout));
}
}
int fd;
if (!current_bad_oid)
- die("a bad revision is needed");
+ die("a %s revision is needed", term_bad);
/* Check if file BISECT_ANCESTORS_OK exists. */
if (!stat(filename, &st) && S_ISREG(st.st_mode))
log_tree_commit(&opt, commit);
}
+/*
+ * The terms used for this bisect session are stored in BISECT_TERMS.
+ * We read them and store them to adapt the messages accordingly.
+ * Default is bad/good.
+ */
+void read_bisect_terms(const char **read_bad, const char **read_good)
+{
+ struct strbuf str = STRBUF_INIT;
+ const char *filename = git_path("BISECT_TERMS");
+ FILE *fp = fopen(filename, "r");
+
+ if (!fp) {
+ if (errno == ENOENT) {
+ *read_bad = "bad";
+ *read_good = "good";
+ return;
+ } else {
+ die("could not read file '%s': %s", filename,
+ strerror(errno));
+ }
+ } else {
+ strbuf_getline(&str, fp, '\n');
+ *read_bad = strbuf_detach(&str, NULL);
+ strbuf_getline(&str, fp, '\n');
+ *read_good = strbuf_detach(&str, NULL);
+ }
+ strbuf_release(&str);
+ fclose(fp);
+}
+
/*
* We use the convention that exiting with an exit code 10 means that
* the bisection process finished successfully.
struct commit_list *tried;
int reaches = 0, all = 0, nr, steps;
const unsigned char *bisect_rev;
- char bisect_rev_hex[GIT_SHA1_HEXSZ + 1];
+ read_bisect_terms(&term_bad, &term_good);
if (read_bisect_refs())
die("reading bisect refs failed");
*/
exit_if_skipped_commits(tried, NULL);
- printf("%s was both good and bad\n",
- oid_to_hex(current_bad_oid));
+ printf("%s was both %s and %s\n",
+ oid_to_hex(current_bad_oid),
+ term_good,
+ term_bad);
exit(1);
}
}
bisect_rev = revs.commits->item->object.sha1;
- memcpy(bisect_rev_hex, sha1_to_hex(bisect_rev), GIT_SHA1_HEXSZ + 1);
if (!hashcmp(bisect_rev, current_bad_oid->hash)) {
exit_if_skipped_commits(tried, current_bad_oid);
- printf("%s is the first bad commit\n", bisect_rev_hex);
+ printf("%s is the first %s commit\n", sha1_to_hex(bisect_rev),
+ term_bad);
show_diff_tree(prefix, revs.commits->item);
/* This means the bisection process succeeded. */
exit(10);
"(roughly %d step%s)\n", nr, (nr == 1 ? "" : "s"),
steps, (steps == 1 ? "" : "s"));
- return bisect_checkout(bisect_rev_hex, no_checkout);
+ return bisect_checkout(bisect_rev, no_checkout);
}
static inline int log2i(int n)