wt-status: convert struct wt_status_state to object_id

Convert the various *_sha1 members to use struct object_id instead.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

wt-status.c

@@ -1350,7 +1350,7 @@ static void show_cherry_pick_in_progress(struct wt_status *s,
 					const char *color)
 {
 	status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
-			find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
+			find_unique_abbrev(state->cherry_pick_head_oid.hash, DEFAULT_ABBREV));
 	if (s->hints) {
 		if (has_unmerged(s))
 			status_printf_ln(s, color,
@@ -1369,7 +1369,7 @@ static void show_revert_in_progress(struct wt_status *s,
 					const char *color)
 {
 	status_printf_ln(s, color, _("You are currently reverting commit %s."),
-			 find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
+			 find_unique_abbrev(state->revert_head_oid.hash, DEFAULT_ABBREV));
 	if (s->hints) {
 		if (has_unmerged(s))
 			status_printf_ln(s, color,
@@ -1490,9 +1490,9 @@ static void wt_status_get_detached_from(struct wt_status_state *state)
 	} else
 		state->detached_from =
 			xstrdup(find_unique_abbrev(cb.noid.hash, DEFAULT_ABBREV));
-	hashcpy(state->detached_sha1, cb.noid.hash);
+	oidcpy(&state->detached_oid, &cb.noid);
 	state->detached_at = !get_oid("HEAD", &oid) &&
-			     !hashcmp(oid.hash, state->detached_sha1);
+			     !oidcmp(&oid, &state->detached_oid);
 
 	free(ref);
 	strbuf_release(&cb.buf);
@@ -1551,13 +1551,13 @@ void wt_status_get_state(struct wt_status_state *state,
 	} else if (!stat(git_path_cherry_pick_head(), &st) &&
 			!get_oid("CHERRY_PICK_HEAD", &oid)) {
 		state->cherry_pick_in_progress = 1;
-		hashcpy(state->cherry_pick_head_sha1, oid.hash);
+		oidcpy(&state->cherry_pick_head_oid, &oid);
 	}
 	wt_status_check_bisect(NULL, state);
 	if (!stat(git_path_revert_head(), &st) &&
 	    !get_oid("REVERT_HEAD", &oid)) {
 		state->revert_in_progress = 1;
-		hashcpy(state->revert_head_sha1, oid.hash);
+		oidcpy(&state->revert_head_oid, &oid);
 	}
 
 	if (get_detached_from)

wt-status.h

@@ -118,9 +118,9 @@ struct wt_status_state {
 	char *branch;
 	char *onto;
 	char *detached_from;
-	unsigned char detached_sha1[20];
-	unsigned char revert_head_sha1[20];
-	unsigned char cherry_pick_head_sha1[20];
+	struct object_id detached_oid;
+	struct object_id revert_head_oid;
+	struct object_id cherry_pick_head_oid;
 };
 
 size_t wt_status_locate_end(const char *s, size_t len);