Move headers into include directories

lib/include/regex.h

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) Camden Dixie O'Brien
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+#ifndef REGEX_H
+#define REGEX_H
+
+#include <stdbool.h>
+
+typedef struct {
+	bool negated;
+	int count, capacity;
+	char *contents;
+} regex_class_t;
+
+typedef enum {
+	REGEX_QUANTIFIER_NONE,
+	REGEX_QUANTIFIER_STAR,
+	REGEX_QUANTIFIER_PLUS,
+	REGEX_QUANTIFIER_QMARK,
+} regex_quantifier_t;
+
+typedef enum {
+	REGEX_TERM_WILDCARD,
+	REGEX_TERM_CLASS,
+	REGEX_TERM_LITERAL,
+	REGEX_TERM_SUBEXPR,
+	REGEX_TERM_EMPTY,
+} regex_term_type_t;
+
+struct _regex_term;
+typedef struct {
+	int count, capacity;
+	struct _regex_term *contents;
+} regex_sequence_t;
+
+typedef struct {
+	int count, capacity;
+	regex_sequence_t *contents;
+} regex_t;
+
+typedef struct _regex_term {
+	regex_quantifier_t quantifier;
+	regex_term_type_t type;
+	union {
+		regex_class_t class;
+		char literal;
+		regex_t subexpr;
+	};
+} regex_term_t;
+
+void regex_free(const regex_t *t);
+void regex_class_free(const regex_class_t *c);
+
+#endif