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bisect--helper: reimplement bisect_log shell function in C

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Reimplement the `bisect_log()` shell function in C and also add
`--bisect-log` subcommand to `git bisect--helper` to call it from
git-bisect.sh .

Using `--bisect-log` subcommand is a temporary measure to port shell
function to C so as to use the existing test suite.

Mentored-by: Lars Schneider <larsxschneider@gmail.com>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Helped-by: Rafael Silva <rafaeloliveira.cs@gmail.com>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Tanushree Tumane <tanushreetumane@gmail.com>
Signed-off-by: Miriam Rubio <mirucam@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Pranit Bauva 2021-02-03 22:54:32 +01:00 committed by Junio C Hamano
parent 6d3ef5b467
commit 97d5ba6a39
2 changed files with 27 additions and 7 deletions
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27
builtin/bisect--helper.c
View file

@ -904,6 +904,23 @@ static enum bisect_error bisect_state(struct bisect_terms *terms, const char **a
return bisect_auto_next(terms, NULL);
}
static enum bisect_error bisect_log(void)
{
int fd, status;
const char* filename = git_path_bisect_log();
if (is_empty_or_missing_file(filename))
return error(_("We are not bisecting."));
fd = open(filename, O_RDONLY);
if (fd < 0)
return BISECT_FAILED;
status = copy_fd(fd, STDOUT_FILENO);
close(fd);
return status ? BISECT_FAILED : BISECT_OK;
}
int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
{
enum {
@ -916,7 +933,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
BISECT_AUTOSTART,
BISECT_NEXT,
BISECT_AUTO_NEXT,
BISECT_STATE
BISECT_STATE,
BISECT_LOG
} cmdmode = 0;
int res = 0, nolog = 0;
struct option options[] = {
@ -938,6 +956,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
N_("verify the next bisection state then checkout the next bisection commit"), BISECT_AUTO_NEXT),
OPT_CMDMODE(0, "bisect-state", &cmdmode,
N_("mark the state of ref (or refs)"), BISECT_STATE),
OPT_CMDMODE(0, "bisect-log", &cmdmode,
N_("list the bisection steps so far"), BISECT_LOG),
OPT_BOOL(0, "no-log", &nolog,
N_("no log for BISECT_WRITE")),
OPT_END()
@ -1000,6 +1020,11 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
get_terms(&terms);
res = bisect_state(&terms, argv, argc);
break;
case BISECT_LOG:
if (argc)
return error(_("--bisect-log requires 0 arguments"));
res = bisect_log();
break;
default:
BUG("unknown subcommand %d", cmdmode);
}

7
git-bisect.sh
View file

@ -169,11 +169,6 @@ exit code \$res from '\$command' is < 0 or >= 128" >&2
done
}
bisect_log () {
test -s "$GIT_DIR/BISECT_LOG" || die "$(gettext "We are not bisecting.")"
cat "$GIT_DIR/BISECT_LOG"
}
get_terms () {
if test -s "$GIT_DIR/BISECT_TERMS"
then
@ -210,7 +205,7 @@ case "$#" in
replay)
bisect_replay "$@" ;;
log)
bisect_log ;;
git bisect--helper --bisect-log || exit ;;
run)
bisect_run "$@" ;;
terms)