locate: make the structs opaque

src/DatabaseCommands.cxx

@@ -227,9 +227,9 @@ handle_list(struct client *client, int argc, char *argv[])
 			return COMMAND_RETURN_ERROR;
 		}
 
-		conditionals = locate_item_list_new(1);
-		conditionals->items[0].tag = TAG_ARTIST;
-		conditionals->items[0].needle = g_strdup(argv[2]);
+		conditionals =
+			locate_item_list_new_single((unsigned)TAG_ARTIST,
+						    argv[2]);
 	} else {
 		conditionals =
 			locate_item_list_parse(argv + 2, argc - 2, false);

src/locate.c

@@ -31,6 +31,24 @@
 #define LOCATE_TAG_FILE_KEY_OLD "filename"
 #define LOCATE_TAG_ANY_KEY      "any"
 
+/* struct used for search, find, list queries */
+struct locate_item {
+	int8_t tag;
+	/* what we are looking for */
+	char *needle;
+};
+
+/**
+ * An array of struct locate_item objects.
+ */
+struct locate_item_list {
+	/** number of items */
+	unsigned length;
+
+	/** this is a variable length array */
+	struct locate_item items[1];
+};
+
 int
 locate_parse_type(const char *str)
 {
@@ -74,17 +92,26 @@ locate_item_list_free(struct locate_item_list *list)
 	g_free(list);
 }
 
-struct locate_item_list *
+static struct locate_item_list *
 locate_item_list_new(unsigned length)
 {
 	struct locate_item_list *list =
-		g_malloc0(sizeof(*list) - sizeof(list->items[0]) +
-			  length * sizeof(list->items[0]));
+		g_malloc(sizeof(*list) - sizeof(list->items[0]) +
+			 length * sizeof(list->items[0]));
 	list->length = length;
 
 	return list;
 }
 
+struct locate_item_list *
+locate_item_list_new_single(unsigned tag, const char *needle)
+{
+	struct locate_item_list *list = locate_item_list_new(1);
+	list->items[0].tag = tag;
+	list->items[0].needle = g_strdup(needle);
+	return list;
+}
+
 struct locate_item_list *
 locate_item_list_parse(char *argv[], unsigned argc, bool fold_case)
 {

src/locate.h

@@ -28,36 +28,16 @@
 #define LOCATE_TAG_FILE_TYPE	TAG_NUM_OF_ITEM_TYPES+10
 #define LOCATE_TAG_ANY_TYPE     TAG_NUM_OF_ITEM_TYPES+20
 
+struct locate_item_list;
 struct song;
 
-/* struct used for search, find, list queries */
-struct locate_item {
-	int8_t tag;
-	/* what we are looking for */
-	char *needle;
-};
-
-/**
- * An array of struct locate_item objects.
- */
-struct locate_item_list {
-	/** number of items */
-	unsigned length;
-
-	/** this is a variable length array */
-	struct locate_item items[1];
-};
-
 gcc_pure
 int
 locate_parse_type(const char *str);
 
-/**
- * Allocates a new struct locate_item_list, and initializes all
- * members with zero bytes.
- */
+gcc_malloc
 struct locate_item_list *
-locate_item_list_new(unsigned length);
+locate_item_list_new_single(unsigned tag, const char *needle);
 
 /* return number of items or -1 on error */
 gcc_nonnull(1)