1 files changed, 33 insertions, 0 deletions
diff --git a/sway/criteria.c b/sway/criteria.c
index 11b41f35..b2582851 100644
--- a/sway/criteria.c
+++ b/sway/criteria.c
@@ -685,3 +685,36 @@ cleanup:
 	criteria_destroy(criteria);
 	return NULL;
 }
+
+bool criteria_is_equal(struct criteria *left, struct criteria *right) {
+	if (left->type != right->type) {
+		return false;
+	}
+	// XXX Only implemented for CT_NO_FOCUS for now.
+	if (left->type == CT_NO_FOCUS) {
+		return strcmp(left->raw, right->raw) == 0;
+	}
+	if (left->type == CT_COMMAND) {
+		return strcmp(left->raw, right->raw) == 0
+				&& strcmp(left->cmdlist, right->cmdlist) == 0;
+	}
+	return false;
+}
+
+bool criteria_already_exists(struct criteria *criteria) {
+	// XXX Only implemented for CT_NO_FOCUS and CT_COMMAND for now.
+	// While criteria_is_equal also obeys this limitation, this is a shortcut
+	// to avoid processing the list.
+	if (criteria->type != CT_NO_FOCUS && criteria->type != CT_COMMAND) {
+		return false;
+	}
+
+	list_t *criterias = config->criteria;
+	for (int i = 0; i < criterias->length; ++i) {
+		struct criteria *existing = criterias->items[i];
+		if (criteria_is_equal(criteria, existing)) {
+			return true;
+		}
+	}
+	return false;
+}