[PATCH 25/26] bisect--helper: `bisect_skip` shell function in C

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From: Pranit Bauva <pranit.bauva@xxxxxxxxx>

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

Using `--bisect-skip` subcommand is a temporary measure to port shell
function to C so as to use the existing test suite. As more functions
are ported, this subcommand will be retired and will be called by some
other method.

Mentored-by: Lars Schneider <larsxschneider@xxxxxxxxx>
Mentored-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
Mentored-by: Johannes Schindelin <Johannes.Schindelin@xxxxxx>
Signed-off-by: Pranit Bauva <pranit.bauva@xxxxxxxxx>
Signed-off-by: Tanushree Tumane <tanushreetumane@xxxxxxxxx>
---
 builtin/bisect--helper.c | 45 +++++++++++++++++++++++++++++++++++++++-
 git-bisect.sh            | 17 +--------------
 2 files changed, 45 insertions(+), 17 deletions(-)

diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
index 4eb2580ba8..0818dbf8ff 100644
--- a/builtin/bisect--helper.c
+++ b/builtin/bisect--helper.c
@@ -30,6 +30,7 @@ static const char * const git_bisect_helper_usage[] = {
 	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>"),
+	N_("git bisect--helper --bisect-skip [(<rev>|<range>)...]"),
 	NULL
 };
 
@@ -994,6 +995,41 @@ static int bisect_replay(struct bisect_terms *terms, const char *filename)
 	return bisect_auto_next(terms, NULL);
 }
 
+static int bisect_skip(struct bisect_terms *terms, const char **argv, int argc)
+{
+	int i, res;
+	const char *pattern = "*..*";
+	struct argv_array argv_state = ARGV_ARRAY_INIT;
+
+	argv_array_push(&argv_state, "skip");
+
+	for (i = 0; i < argc; i++) {
+		if (!wildmatch(pattern, argv[i], 0)) {
+			struct rev_info revs;
+			struct commit *commit;
+			struct argv_array rev_argv = ARGV_ARRAY_INIT;
+
+			argv_array_pushl(&rev_argv, "skipped_commits", argv[i], NULL);
+			init_revisions(&revs, NULL);
+			setup_revisions(rev_argv.argc, rev_argv.argv, &revs, NULL);
+			argv_array_clear(&rev_argv);
+
+			if (prepare_revision_walk(&revs))
+				die(_("revision walk setup failed\n"));
+			while ((commit = get_revision(&revs)) != NULL)
+				argv_array_push(&argv_state,
+						oid_to_hex(&commit->object.oid));
+
+			reset_revision_walk();
+		} else {
+			argv_array_push(&argv_state, argv[i]);
+		}
+	}
+	res = bisect_state(terms, argv_state.argv, argv_state.argc);
+	argv_array_clear(&argv_state);
+	return res;
+}
+
 int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
 {
 	enum {
@@ -1005,7 +1041,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
 		BISECT_NEXT,
 		BISECT_STATE,
 		BISECT_LOG,
-		BISECT_REPLAY
+		BISECT_REPLAY,
+		BISECT_SKIP
 	} cmdmode = 0;
 	int no_checkout = 0, res = 0, nolog = 0;
 	struct option options[] = {
@@ -1027,6 +1064,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
 			 N_("output the contents of BISECT_LOG"), BISECT_LOG),
 		OPT_CMDMODE(0, "bisect-replay", &cmdmode,
 			 N_("replay the bisection process from the given file"), BISECT_REPLAY),
+		OPT_CMDMODE(0, "bisect-skip", &cmdmode,
+			 N_("skip some commits for checkout"), BISECT_SKIP),
 		OPT_BOOL(0, "no-checkout", &no_checkout,
 			 N_("update BISECT_HEAD instead of checking out the current commit")),
 		OPT_BOOL(0, "no-log", &nolog,
@@ -1093,6 +1132,10 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
 		set_terms(&terms, "bad", "good");
 		res = bisect_replay(&terms, argv[0]);
 		break;
+	case BISECT_SKIP:
+		set_terms(&terms, "bad", "good");
+		res = bisect_skip(&terms, argv, argc);
+		break;
 	default:
 		return error("BUG: unknown subcommand '%d'", cmdmode);
 	}
diff --git a/git-bisect.sh b/git-bisect.sh
index 0555191c41..edfd3f8b3d 100755
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -39,21 +39,6 @@ _x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
 TERM_BAD=bad
 TERM_GOOD=good
 
-bisect_skip() {
-	all=''
-	for arg in "$@"
-	do
-		case "$arg" in
-		*..*)
-			revs=$(git rev-list "$arg") || die "$(eval_gettext "Bad rev input: \$arg")" ;;
-		*)
-			revs=$(git rev-parse --sq-quote "$arg") ;;
-		esac
-		all="$all $revs"
-	done
-	eval git bisect--helper --bisect-state 'skip' $all
-}
-
 bisect_visualize() {
 	git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
 
@@ -162,7 +147,7 @@ case "$#" in
 	bad|good|new|old|"$TERM_BAD"|"$TERM_GOOD")
 		git bisect--helper --bisect-state "$cmd" "$@" ;;
 	skip)
-		bisect_skip "$@" ;;
+		git bisect--helper --bisect-skip "$@" ;;
 	next)
 		# Not sure we want "next" at the UI level anymore.
 		get_terms
-- 
gitgitgadget




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