Move headers into include directories

lib/include/fsa.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) Camden Dixie O'Brien
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+#ifndef FSA_H
+#define FSA_H
+
+#include <stdbool.h>
+
+#define CHAR_COUNT 256
+#define ALPHABET_SIZE (CHAR_COUNT + 1)
+
+// Use one more than any valid char to represent empty string
+#define EPSILON CHAR_COUNT
+
+typedef struct {
+	int input, next;
+} fsa_rule_t;
+
+typedef struct {
+	bool final;
+	int count, capacity;
+	fsa_rule_t *rules;
+} fsa_state_t;
+
+typedef struct {
+	int count, capacity, initial;
+	fsa_state_t *states;
+} fsa_t;
+
+void fsa_init(fsa_t *fsa);
+void fsa_free(const fsa_t *fsa);
+
+int fsa_add_state(fsa_t *fsa);
+void fsa_add_rule(fsa_t *fsa, int from, int to, int input);
+
+#endif