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      1 /*	$NetBSD: regex.h,v 1.7 2025/01/26 16:25:42 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
      5  *
      6  * SPDX-License-Identifier: MPL-2.0
      7  *
      8  * This Source Code Form is subject to the terms of the Mozilla Public
      9  * License, v. 2.0. If a copy of the MPL was not distributed with this
     10  * file, you can obtain one at https://mozilla.org/MPL/2.0/.
     11  *
     12  * See the COPYRIGHT file distributed with this work for additional
     13  * information regarding copyright ownership.
     14  */
     15 
     16 #pragma once
     17 
     18 /*! \file isc/regex.h */
     19 
     20 #include <isc/lang.h>
     21 #include <isc/types.h>
     22 
     23 ISC_LANG_BEGINDECLS
     24 
     25 int
     26 isc_regex_validate(const char *expression);
     27 /*%<
     28  * Check a regular expression for syntactic correctness.
     29  *
     30  * Returns:
     31  *\li	 -1 on error.
     32  *\li	 the number of groups in the expression.
     33  */
     34 
     35 ISC_LANG_ENDDECLS
     36