next: Step 123

Gurrium · Jan 26, 2023 · 4ea2943 · 4ea2943
1 parent ca6c441
commit 4ea2943
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/kilo.c b/kilo.c
@@ -231,10 +231,12 @@ void editorUpdateRow(erow *row) {
   row->rsize = idx;
 }
 
-void editorAppendRow(char *s, size_t len) {
+void editorInsertRow(int at, char *s, size_t len) {
+  if (at < 0 || at > E.numrows) return;
+
   E.row = realloc(E.row, sizeof(erow) * (E.numrows + 1));
+  memmove(&E.row[at + 1], &E.row[at], sizeof(erow) * (E.numrows - at));
 
-  int at = E.numrows;
   E.row[at].size = len;
   E.row[at].chars = malloc(len + 1);
   memcpy(E.row[at].chars, s, len);