[RFC patch 1/5] cli/config: refactor _stored_in_db

[David Bremner]

This will make it easier to add other prefixes that are stored in the
database, compared to special casing each one as "query." was.
---
 notmuch-config.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/notmuch-config.c b/notmuch-config.c
index bf77cc9d..1517d0ff 100644
--- a/notmuch-config.c
+++ b/notmuch-config.c
@@ -821,17 +821,26 @@ _item_split (char *item, char **group, char **key)
 
 #define BUILT_WITH_PREFIX "built_with."
 
+struct config_key {
+    const char *name;
+    bool prefix;
+};
+
 static bool
 _stored_in_db (const char *item)
 {
-    const char * db_configs[] = {
-	"index.decrypt",
+    struct config_key db_configs[] = {
+	{"index.decrypt", false},
+	{"query.", true},
     };
-    if (STRNCMP_LITERAL (item, "query.") == 0)
-	return true;
-    for (size_t i = 0; i < ARRAY_SIZE (db_configs); i++)
-	if (strcmp (item, db_configs[i]) == 0)
+    for (size_t i = 0; i < ARRAY_SIZE (db_configs); i++) {
+	if (db_configs[i].prefix &&
+	    strncmp (item, db_configs[i].name,
+		     strlen(db_configs[i].name)) == 0)
 	    return true;
+	if (strcmp (item, db_configs[i].name) == 0)
+	    return true;
+    }
     return false;
 }
 
-- 
2.19.1