1 files changed, 56 insertions, 0 deletions
diff --git a/src/readline.c b/src/readline.c
new file mode 100644
index 0000000..bda4df9
--- /dev/null
+++ b/src/readline.c
@@ -0,0 +1,56 @@
+/* Aplwc - A Programming Language With Constraints
+ *
+ * Copyright (C) 2026 Peter Mikkelsen <petermikkelsen10@gmail.com>
+ *
+ * This file is part of aplwc.
+ *
+ * Aplwc is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Aplwc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with aplwc.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include "readline.h"
+
+static struct aplwc *aplwc;
+static char **completions;
+static int completion_index;
+
+static char **complete(const char *, int, int);
+static char *get_completion(const char *, int);
+
+void
+init_readline(struct aplwc *_aplwc)
+{
+	aplwc = _aplwc;
+	rl_readline_name = "aplwc";
+	rl_attempted_completion_function = complete;	
+}
+
+static char **
+complete(const char *text, int start, int end)
+{
+	rl_attempted_completion_over = 1;
+	completions = aplwc_autocomplete(aplwc, rl_line_buffer, start, end);
+	char **result = NULL;
+	if(completions)
+		result = rl_completion_matches(text, get_completion);
+	free(completions);
+	return result;
+}
+
+static char *
+get_completion(const char *text, int state)
+{
+	return completions[state];
+}