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bisect: replace hardcoded "bad|good" by variables 
To add new tags like old/new and have keywords less confusing, the
first step is to avoid hardcoding the keywords.

The default mode is still bad/good.

Signed-off-by: Antoine Delaite <antoine.delaite@ensimag.grenoble-inp.fr>
Signed-off-by: Louis Stuber <stuberl@ensimag.grenoble-inp.fr>
Signed-off-by: Valentin Duperray <Valentin.Duperray@ensimag.imag.fr>
Signed-off-by: Franck Jonas <Franck.Jonas@ensimag.imag.fr>
Signed-off-by: Lucien Kong <Lucien.Kong@ensimag.imag.fr>
Signed-off-by: Thomas Nguy <Thomas.Nguy@ensimag.imag.fr>
Signed-off-by: Huynh Khoi Nguyen Nguyen <Huynh-Khoi-Nguyen.Nguyen@ensimag.imag.fr>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Antoine Delaite authored and Junio C Hamano committed Jun 29, 2015
1 parent 2df5a84 commit 43f9d9f
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Showing 2 changed files with 68 additions and 43 deletions.
54 changes: 37 additions & 17 deletions bisect.c
View file
Expand Up @@ -21,6 +21,9 @@ 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)

Expand Down Expand Up @@ -403,15 +406,21 @@ struct commit_list *find_bisection(struct commit_list *list,
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;
}

Expand Down Expand Up @@ -634,7 +643,7 @@ static void exit_if_skipped_commits(struct commit_list *tried,
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));
Expand Down Expand Up @@ -732,18 +741,24 @@ static void handle_bad_merge_base(void)
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 {
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 mistook good and bad revs?\n");
"Maybe you mistook %s and %s revs?\n",
term_good, term_bad, term_good, term_bad);
exit(1);
}

Expand All @@ -755,10 +770,10 @@ static void handle_skipped_merge_base(const unsigned char *mb)

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);
}

Expand Down Expand Up @@ -839,7 +854,7 @@ static void check_good_are_ancestors_of_bad(const char *prefix, int 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))
Expand Down Expand Up @@ -905,6 +920,8 @@ int bisect_next_all(const char *prefix, int no_checkout)
const unsigned char *bisect_rev;
char bisect_rev_hex[GIT_SHA1_HEXSZ + 1];

term_bad = "bad";
term_good = "good";
if (read_bisect_refs())
die("reading bisect refs failed");

Expand All @@ -926,8 +943,10 @@ int bisect_next_all(const char *prefix, int no_checkout)
*/
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);
}

Expand All @@ -942,7 +961,8 @@ int bisect_next_all(const char *prefix, int no_checkout)

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", bisect_rev_hex,
term_bad);
show_diff_tree(prefix, revs.commits->item);
/* This means the bisection process succeeded. */
exit(10);
Expand Down
57 changes: 31 additions & 26 deletions git-bisect.sh
View file
Expand Up @@ -32,6 +32,8 @@ OPTIONS_SPEC=

_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
TERM_BAD=bad
TERM_GOOD=good

bisect_head()
{
Expand Down Expand Up @@ -100,8 +102,8 @@ bisect_start() {
break
}
case $bad_seen in
0) state='bad' ; bad_seen=1 ;;
*) state='good' ;;
0) state=$TERM_BAD ; bad_seen=1 ;;
*) state=$TERM_GOOD ;;
esac
eval="$eval bisect_write '$state' '$rev' 'nolog' &&"
shift
Expand Down Expand Up @@ -184,9 +186,12 @@ bisect_write() {
rev="$2"
nolog="$3"
case "$state" in
bad) tag="$state" ;;
good|skip) tag="$state"-"$rev" ;;
*) die "$(eval_gettext "Bad bisect_write argument: \$state")" ;;
"$TERM_BAD")
tag="$state" ;;
"$TERM_GOOD"|skip)
tag="$state"-"$rev" ;;
*)
die "$(eval_gettext "Bad bisect_write argument: \$state")" ;;
esac
git update-ref "refs/bisect/$tag" "$rev" || exit
echo "# $state: $(git show-branch $rev)" >>"$GIT_DIR/BISECT_LOG"
Expand Down Expand Up @@ -230,12 +235,12 @@ bisect_state() {
case "$#,$state" in
0,*)
die "$(gettext "Please call 'bisect_state' with at least one argument.")" ;;
1,bad|1,good|1,skip)
1,"$TERM_BAD"|1,"$TERM_GOOD"|1,skip)
rev=$(git rev-parse --verify $(bisect_head)) ||
die "$(gettext "Bad rev input: $(bisect_head)")"
bisect_write "$state" "$rev"
check_expected_revs "$rev" ;;
2,bad|*,good|*,skip)
2,"$TERM_BAD"|*,"$TERM_GOOD"|*,skip)
shift
hash_list=''
for rev in "$@"
Expand All @@ -249,8 +254,8 @@ bisect_state() {
bisect_write "$state" "$rev"
done
check_expected_revs $hash_list ;;
*,bad)
die "$(gettext "'git bisect bad' can take only one argument.")" ;;
*,"$TERM_BAD")
die "$(eval_gettext "'git bisect \$TERM_BAD' can take only one argument.")" ;;
*)
usage ;;
esac
Expand All @@ -259,21 +264,21 @@ bisect_state() {

bisect_next_check() {
missing_good= missing_bad=
git show-ref -q --verify refs/bisect/bad || missing_bad=t
test -n "$(git for-each-ref "refs/bisect/good-*")" || missing_good=t
git show-ref -q --verify refs/bisect/$TERM_BAD || missing_bad=t
test -n "$(git for-each-ref "refs/bisect/$TERM_GOOD-*")" || missing_good=t

case "$missing_good,$missing_bad,$1" in
,,*)
: have both good and bad - ok
: have both $TERM_GOOD and $TERM_BAD - ok
;;
*,)
# do not have both but not asked to fail - just report.
false
;;
t,,good)
t,,"$TERM_GOOD")
# have bad but not good. we could bisect although
# this is less optimum.
gettextln "Warning: bisecting only with a bad commit." >&2
eval_gettextln "Warning: bisecting only with a \$TERM_BAD commit." >&2
if test -t 0
then
# TRANSLATORS: Make sure to include [Y] and [n] in your
Expand All @@ -283,7 +288,7 @@ bisect_next_check() {
read yesno
case "$yesno" in [Nn]*) exit 1 ;; esac
fi
: bisect without good...
: bisect without $TERM_GOOD...
;;
*)

Expand All @@ -307,7 +312,7 @@ bisect_auto_next() {
bisect_next() {
case "$#" in 0) ;; *) usage ;; esac
bisect_autostart
bisect_next_check good
bisect_next_check $TERM_GOOD

# Perform all bisection computation, display and checkout
git bisect--helper --next-all $(test -f "$GIT_DIR/BISECT_HEAD" && echo --no-checkout)
Expand All @@ -316,18 +321,18 @@ bisect_next() {
# Check if we should exit because bisection is finished
if test $res -eq 10
then
bad_rev=$(git show-ref --hash --verify refs/bisect/bad)
bad_rev=$(git show-ref --hash --verify refs/bisect/$TERM_BAD)
bad_commit=$(git show-branch $bad_rev)
echo "# first bad commit: $bad_commit" >>"$GIT_DIR/BISECT_LOG"
echo "# first $TERM_BAD commit: $bad_commit" >>"$GIT_DIR/BISECT_LOG"
exit 0
elif test $res -eq 2
then
echo "# only skipped commits left to test" >>"$GIT_DIR/BISECT_LOG"
good_revs=$(git for-each-ref --format="%(objectname)" "refs/bisect/good-*")
for skipped in $(git rev-list refs/bisect/bad --not $good_revs)
good_revs=$(git for-each-ref --format="%(objectname)" "refs/bisect/$TERM_GOOD-*")
for skipped in $(git rev-list refs/bisect/$TERM_BAD --not $good_revs)
do
skipped_commit=$(git show-branch $skipped)
echo "# possible first bad commit: $skipped_commit" >>"$GIT_DIR/BISECT_LOG"
echo "# possible first $TERM_BAD commit: $skipped_commit" >>"$GIT_DIR/BISECT_LOG"
done
exit $res
fi
Expand Down Expand Up @@ -421,7 +426,7 @@ bisect_replay () {
start)
cmd="bisect_start $rev"
eval "$cmd" ;;
good|bad|skip)
$TERM_GOOD|$TERM_BAD|skip)
bisect_write "$command" "$rev" ;;
*)
die "$(gettext "?? what are you talking about?")" ;;
Expand Down Expand Up @@ -455,9 +460,9 @@ exit code \$res from '\$command' is < 0 or >= 128" >&2
state='skip'
elif [ $res -gt 0 ]
then
state='bad'
state="$TERM_BAD"
else
state='good'
state="$TERM_GOOD"
fi

# We have to use a subshell because "bisect_state" can exit.
Expand All @@ -466,7 +471,7 @@ exit code \$res from '\$command' is < 0 or >= 128" >&2

cat "$GIT_DIR/BISECT_RUN"

if sane_grep "first bad commit could be any of" "$GIT_DIR/BISECT_RUN" \
if sane_grep "first $TERM_BAD commit could be any of" "$GIT_DIR/BISECT_RUN" \
>/dev/null
then
gettextln "bisect run cannot continue any more" >&2
Expand All @@ -480,7 +485,7 @@ exit code \$res from '\$command' is < 0 or >= 128" >&2
exit $res
fi

if sane_grep "is the first bad commit" "$GIT_DIR/BISECT_RUN" >/dev/null
if sane_grep "is the first $TERM_BAD commit" "$GIT_DIR/BISECT_RUN" >/dev/null
then
gettextln "bisect run success"
exit 0;
Expand Down

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