stringop: lenient_strcmp: Add.

1 files changed, 13 insertions, 0 deletions

diff --git a/sway/stringop.c b/sway/stringop.c
index 8d6cac2f..fe5a97ca 100644
--- a/sway/stringop.c
+++ b/sway/stringop.c
@@ -74,6 +74,19 @@ void strip_quotes(char *str) {
         *end = '\0';
 }
 
+// strcmp that also handles null pointers.
+int lenient_strcmp(char *a, char *b) {
+        if (a == b) {
+                return 0;
+        } else if (!a) {
+                return -1;
+        } else if (!b) {
+                return 1;
+        } else {
+                return strcmp(a, b);
+        }
+}
+
 list_t *split_string(const char *str, const char *delims) {
         list_t *res = create_list();
         char *copy = strdup(str);