bisect--helper: reimplement `bisect_replay` shell function in C

Reimplement the `bisect_replay` shell function in C and also add
`--bisect-replay` subcommand to `git bisect--helper` to call it from
git-bisect.sh

Using `--bisect-replay` 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>
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 22:54:33 +01:00 коммит произвёл Junio C Hamano
Родитель 97d5ba6a39
Коммит 2b1fd947f6
2 изменённых файлов: 84 добавлений и 34 удалений

Просмотреть файл

@ -31,6 +31,7 @@ static const char * const git_bisect_helper_usage[] = {
N_("git bisect--helper --bisect-auto-next"),
N_("git bisect--helper --bisect-state (bad|new) [<rev>]"),
N_("git bisect--helper --bisect-state (good|old) [<rev>...]"),
N_("git bisect--helper --bisect-replay <filename>"),
NULL
};
@ -921,6 +922,78 @@ static enum bisect_error bisect_log(void)
return status ? BISECT_FAILED : BISECT_OK;
}
static int process_replay_line(struct bisect_terms *terms, struct strbuf *line)
{
const char *p = line->buf + strspn(line->buf, " \t");
char *word_end, *rev;
if ((!skip_prefix(p, "git bisect", &p) &&
!skip_prefix(p, "git-bisect", &p)) || !isspace(*p))
return 0;
p += strspn(p, " \t");
word_end = (char *)p + strcspn(p, " \t");
rev = word_end + strspn(word_end, " \t");
*word_end = '\0'; /* NUL-terminate the word */
get_terms(terms);
if (check_and_set_terms(terms, p))
return -1;
if (!strcmp(p, "start")) {
struct strvec argv = STRVEC_INIT;
int res;
sq_dequote_to_strvec(rev, &argv);
res = bisect_start(terms, argv.v, argv.nr);
strvec_clear(&argv);
return res;
}
if (one_of(p, terms->term_good,
terms->term_bad, "skip", NULL))
return bisect_write(p, rev, terms, 0);
if (!strcmp(p, "terms")) {
struct strvec argv = STRVEC_INIT;
int res;
sq_dequote_to_strvec(rev, &argv);
res = bisect_terms(terms, argv.nr == 1 ? argv.v[0] : NULL);
strvec_clear(&argv);
return res;
}
error(_("'%s'?? what are you talking about?"), p);
return -1;
}
static enum bisect_error bisect_replay(struct bisect_terms *terms, const char *filename)
{
FILE *fp = NULL;
enum bisect_error res = BISECT_OK;
struct strbuf line = STRBUF_INIT;
if (is_empty_or_missing_file(filename))
return error(_("cannot read file '%s' for replaying"), filename);
if (bisect_reset(NULL))
return BISECT_FAILED;
fp = fopen(filename, "r");
if (!fp)
return BISECT_FAILED;
while ((strbuf_getline(&line, fp) != EOF) && !res)
res = process_replay_line(terms, &line);
strbuf_release(&line);
fclose(fp);
if (res)
return BISECT_FAILED;
return bisect_auto_next(terms, NULL);
}
int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
{
enum {
@ -934,7 +1007,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
BISECT_NEXT,
BISECT_AUTO_NEXT,
BISECT_STATE,
BISECT_LOG
BISECT_LOG,
BISECT_REPLAY
} cmdmode = 0;
int res = 0, nolog = 0;
struct option options[] = {
@ -958,6 +1032,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
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_CMDMODE(0, "bisect-replay", &cmdmode,
N_("replay the bisection process from the given file"), BISECT_REPLAY),
OPT_BOOL(0, "no-log", &nolog,
N_("no log for BISECT_WRITE")),
OPT_END()
@ -1025,6 +1101,12 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
return error(_("--bisect-log requires 0 arguments"));
res = bisect_log();
break;
case BISECT_REPLAY:
if (argc != 1)
return error(_("no logfile given"));
set_terms(&terms, "bad", "good");
res = bisect_replay(&terms, argv[0]);
break;
default:
BUG("unknown subcommand %d", cmdmode);
}

Просмотреть файл

@ -77,38 +77,6 @@ bisect_visualize() {
eval '"$@"' --bisect -- $(cat "$GIT_DIR/BISECT_NAMES")
}
bisect_replay () {
file="$1"
test "$#" -eq 1 || die "$(gettext "No logfile given")"
test -r "$file" || die "$(eval_gettext "cannot read \$file for replaying")"
git bisect--helper --bisect-reset || exit
oIFS="$IFS" IFS="$IFS$(printf '\015')"
while read git bisect command rev tail
do
test "$git $bisect" = "git bisect" || test "$git" = "git-bisect" || continue
if test "$git" = "git-bisect"
then
rev="$command"
command="$bisect"
fi
get_terms
git bisect--helper --check-and-set-terms "$command" "$TERM_GOOD" "$TERM_BAD" || exit
get_terms
case "$command" in
start)
eval "git bisect--helper --bisect-start $rev $tail" ;;
"$TERM_GOOD"|"$TERM_BAD"|skip)
git bisect--helper --bisect-write "$command" "$rev" "$TERM_GOOD" "$TERM_BAD" || exit;;
terms)
git bisect--helper --bisect-terms $rev || exit;;
*)
die "$(gettext "?? what are you talking about?")" ;;
esac
done <"$file"
IFS="$oIFS"
git bisect--helper --bisect-auto-next || exit
}
bisect_run () {
git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
@ -203,7 +171,7 @@ case "$#" in
reset)
git bisect--helper --bisect-reset "$@" ;;
replay)
bisect_replay "$@" ;;
git bisect--helper --bisect-replay "$@" || exit;;
log)
git bisect--helper --bisect-log || exit ;;
run)