Add support for parsing arrays of constants as bitmasks in the item_db

Fields marked as constant bitmasks will support the following syntaxes:

  Field: 10             // Decimal value
  Field: 0xA            // Hexadecimal value
  Field: "FOO"          // Constant
  Field: [2, 8]         // Array of decimal values
  Field: [0x2, 0x8]     // Array of hexadecimal values
  Field: ["FOO", "BAR"] // Array of constants

Signed-off-by: Haru <haru@dotalux.com>

2 files changed, 64 insertions, 7 deletions

diff --git a/src/map/itemdb.c b/src/map/itemdb.c
index 40dd9ab4f..7a2c967fb 100644
--- a/src/map/itemdb.c
+++ b/src/map/itemdb.c
@@ -2224,21 +2224,76 @@ int itemdb_readdb_libconfig_sub(struct config_setting_t *it, int n, const char *
 
 bool itemdb_lookup_const(const struct config_setting_t *it, const char *name, int *value)
 {
+	const char *str = NULL;
+
 	nullpo_retr(false, name);
 	nullpo_retr(false, value);
-	if (libconfig->setting_lookup_int(it, name, value))
-	{
+
+	if (libconfig->setting_lookup_int(it, name, value)) {
 		return true;
 	}
-	else
-	{
+
+	if (libconfig->setting_lookup_string(it, name, &str)) {
+		if (*str && script->get_constant(str, value))
+			return true;
+	}
+
+	return false;
+}
+
+bool itemdb_lookup_const_mask(const struct config_setting_t *it, const char *name, int *value)
+{
+	const struct config_setting_t *t = NULL;
+
+	nullpo_retr(false, it);
+	nullpo_retr(false, name);
+	nullpo_retr(false, value);
+
+	if ((t = libconfig->setting_get_member(it, name)) == NULL) {
+		return false;
+	}
+
+	if (config_setting_is_scalar(t)) {
 		const char *str = NULL;
-		if (libconfig->setting_lookup_string(it, name, &str))
-		{
-			if (*str && script->get_constant(str, value))
+
+		if (config_setting_is_number(t)) {
+			*value = libconfig->setting_get_int(t);
+			return true;
+		}
+
+		if ((str = libconfig->setting_get_string(t)) != NULL) {
+			int i32 = -1;
+			if (script->get_constant(str, &i32) && i32 >= 0) {
+				*value = i32;
 				return true;
+			}
+		}
+
+		return false;
+	}
+
+	if (config_setting_is_aggregate(t) && libconfig->setting_length(t) >= 1) {
+		const struct config_setting_t *elem = NULL;
+		int i = 0;
+
+		*value = 0;
+
+		while ((elem = libconfig->setting_get_elem(t, i++)) != NULL) {
+			const char *str = libconfig->setting_get_string(elem);
+			int i32 = -1;
+
+			if (str == NULL)
+				return false;
+
+			if (!script->get_constant(str, &i32) || i32 < 0)
+				return false;
+
+			*value |= i32;
 		}
+
+		return true;
 	}
+
 	return false;
 }
 
@@ -2664,4 +2719,5 @@ void itemdb_defaults(void) {
 	itemdb->id2combo = itemdb_id2combo;
 	itemdb->is_item_usable = itemdb_is_item_usable;
 	itemdb->lookup_const = itemdb_lookup_const;
+	itemdb->lookup_const_mask = itemdb_lookup_const_mask;
 }
diff --git a/src/map/itemdb.h b/src/map/itemdb.h
index 8a1799fbd..980e8730e 100644
--- a/src/map/itemdb.h
+++ b/src/map/itemdb.h
@@ -647,6 +647,7 @@ struct itemdb_interface {
 	struct item_combo * (*id2combo) (unsigned short id);
 	bool (*is_item_usable) (struct item_data *item);
 	bool (*lookup_const) (const struct config_setting_t *it, const char *name, int *value);
+	bool (*lookup_const_mask) (const struct config_setting_t *it, const char *name, int *value);
 };
 
 #ifdef HERCULES_CORE