[PATCH v3 6/6] notes-util.c: replace `git_config()` with `git_config_get_value()`

[Tanay Abhra <tanayabh@gmail.com>]

Use `git_config_get_value()` instead of `git_config()` to take advantage of
the config-set API which provides a cleaner control flow.
The function now raises an error instead of dying when a NULL value is found
for key "notes.rewritemode".

Signed-off-by: Tanay Abhra <tanayabh@gmail.com>
---
 notes-utils.c | 33 ++++++++++++++++-----------------
 1 file changed, 16 insertions(+), 17 deletions(-)

diff --git a/notes-utils.c b/notes-utils.c
index b64dc1b..ffa2b70 100644
--- a/notes-utils.c
+++ b/notes-utils.c
@@ -69,22 +69,24 @@ static combine_notes_fn parse_combine_notes_fn(const char *v)
 		return NULL;
 }
 
-static int notes_rewrite_config(const char *k, const char *v, void *cb)
+static void notes_rewrite_config(struct notes_rewrite_cfg *c)
 {
-	struct notes_rewrite_cfg *c = cb;
-	if (starts_with(k, "notes.rewrite.") && !strcmp(k+14, c->cmd)) {
-		c->enabled = git_config_bool(k, v);
-		return 0;
-	} else if (!c->mode_from_env && !strcmp(k, "notes.rewritemode")) {
+	const char *v;
+	struct strbuf key = STRBUF_INIT;
+	strbuf_addf(&key, "notes.rewrite.%s", c->cmd);
+	git_config_get_bool(key.buf, &c->enabled);
+	strbuf_release(&key);
+
+	if (!c->mode_from_env && !git_config_get_value("notes.rewritemode", &v)) {
 		if (!v)
-			return config_error_nonbool(k);
-		c->combine = parse_combine_notes_fn(v);
-		if (!c->combine) {
-			error(_("Bad notes.rewriteMode value: '%s'"), v);
-			return 1;
+			config_error_nonbool("notes.rewritemode");
+		else {
+			c->combine = parse_combine_notes_fn(v);
+			if (!c->combine)
+				error(_("Bad notes.rewriteMode value: '%s'"), v);
 		}
-		return 0;
-	} else if (!c->refs_from_env && !strcmp(k, "notes.rewriteref")) {
+	}
+	if (!c->refs_from_env && !git_config_get_value("notes.rewriteref", &v)) {
 		/* note that a refs/ prefix is implied in the
 		 * underlying for_each_glob_ref */
 		if (starts_with(v, "refs/notes/"))
@@ -92,10 +94,7 @@ static int notes_rewrite_config(const char *k, const char *v, void *cb)
 		else
 			warning(_("Refusing to rewrite notes in %s"
 				" (outside of refs/notes/)"), v);
-		return 0;
 	}
-
-	return 0;
 }
 
 
@@ -124,7 +123,7 @@ struct notes_rewrite_cfg *init_copy_notes_for_rewrite(const char *cmd)
 		c->refs_from_env = 1;
 		string_list_add_refs_from_colon_sep(c->refs, rewrite_refs_env);
 	}
-	git_config(notes_rewrite_config, c);
+	notes_rewrite_config(c);
 	if (!c->enabled || !c->refs->nr) {
 		string_list_clear(c->refs, 0);
 		free(c->refs);
-- 
1.9.0.GIT