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/*-
* Copyright (c) 2009 Varnish Software AS
* All rights reserved.
*
* Author: Tollef Fog Heen <tfheen@redpill-linpro.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Regular expression support
*
* We wrap PCRE2 in VRE to make to make it feasible to use something else
* without hunting down stuff through out the Varnish source code.
*
*/
#ifndef VRE_H_INCLUDED
#define VRE_H_INCLUDED
#define VRE_ERROR_LEN 128
struct vre;
struct vsb;
struct vre_limits {
unsigned match;
unsigned depth;
};
typedef struct vre vre_t;
/* This maps to PCRE2 error codes */
extern const int VRE_ERROR_NOMATCH;
/* And those to PCRE2 compilation options */
extern const unsigned VRE_CASELESS;
vre_t *VRE_compile(const char *, unsigned, int *, int *, unsigned);
vre_t *VRE_export(const vre_t *, size_t *);
int VRE_error(struct vsb *, int err);
int VRE_match(const vre_t *code, const char *subject, size_t length,
int options, const volatile struct vre_limits *lim);
int VRE_capture(const vre_t *code, const char *subject, size_t length,
int options, txt *groups, size_t count,
const volatile struct vre_limits *lim);
int VRE_sub(const vre_t *code, const char *subject, const char *replacement,
struct vsb *vsb, const volatile struct vre_limits *lim, int all);
void VRE_free(vre_t **);
void VRE_quote(struct vsb *, const char *);
#endif /* VRE_H_INCLUDED */
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