1/*
2 * Copyright (C) 1984-2021  Mark Nudelman
3 *
4 * You may distribute under the terms of either the GNU General Public
5 * License or the Less License, as specified in the README file.
6 *
7 * For more information, see the README file.
8 */
9
10#if HAVE_GNU_REGEX
11#define __USE_GNU 1
12#include <regex.h>
13#define PATTERN_TYPE          struct re_pattern_buffer *
14#define SET_NULL_PATTERN(name)   name = NULL
15#endif
16
17#if HAVE_POSIX_REGCOMP
18#include <regex.h>
19#ifdef REG_EXTENDED
20extern int less_is_more;
21#define REGCOMP_FLAG    (less_is_more ? 0 : REG_EXTENDED)
22#else
23#define REGCOMP_FLAG    0
24#endif
25#define PATTERN_TYPE          regex_t *
26#define SET_NULL_PATTERN(name)   name = NULL
27#endif
28
29#if HAVE_PCRE
30#include <pcre.h>
31#define PATTERN_TYPE          pcre *
32#define SET_NULL_PATTERN(name)   name = NULL
33#endif
34
35#if HAVE_PCRE2
36#define PCRE2_CODE_UNIT_WIDTH 8
37#include <pcre2.h>
38#define PATTERN_TYPE          pcre2_code *
39#define SET_NULL_PATTERN(name)   name = NULL
40#endif
41
42#if HAVE_RE_COMP
43char *re_comp LESSPARAMS ((char*));
44int re_exec LESSPARAMS ((char*));
45#define PATTERN_TYPE          int
46#define SET_NULL_PATTERN(name)   name = 0
47#endif
48
49#if HAVE_REGCMP
50char *regcmp LESSPARAMS ((char*));
51char *regex LESSPARAMS ((char**, char*));
52extern char *__loc1;
53#define PATTERN_TYPE          char **
54#define SET_NULL_PATTERN(name)   name = NULL
55#endif
56
57#if HAVE_V8_REGCOMP
58#include "regexp.h"
59extern int reg_show_error;
60#define PATTERN_TYPE          struct regexp *
61#define SET_NULL_PATTERN(name)   name = NULL
62#endif
63
64#if NO_REGEX
65#define PATTERN_TYPE          void *
66#define SET_NULL_PATTERN(name)
67#endif
68