1/*
2 * Copyright (c) 1998, 1999 Henry Spencer. All rights reserved.
3 *
4 * Development of this software was funded, in part, by Cray Research Inc.,
5 * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
6 * Corporation, none of whom are responsible for the results. The author
7 * thanks all of them.
8 *
9 * Redistribution and use in source and binary forms -- with or without
10 * modification -- are permitted for any purpose, provided that
11 * redistributions in source form retain this entire copyright notice and
12 * indicate the origin and nature of any modifications.
13 *
14 * I'd appreciate being given credit for this package in the documentation
15 * of software which uses it, but that is not a requirement.
16 *
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
19 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
20 * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
26 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * src/include/regex/regcustom.h
29 */
30
31/* headers if any */
32
33/*
34 * It's against Postgres coding conventions to include postgres.h in a
35 * header file, but we allow the violation here because the regexp library
36 * files specifically intend this file to supply application-dependent
37 * headers, and are careful to include this file before anything else.
38 */
39#include "postgres.h"
40
41#include <ctype.h>
42#include <limits.h>
43
44/*
45 * towlower() and friends should be in <wctype.h>, but some pre-C99 systems
46 * declare them in <wchar.h>.
47 */
48#ifdef HAVE_WCHAR_H
49#include <wchar.h>
50#endif
51#ifdef HAVE_WCTYPE_H
52#include <wctype.h>
53#endif
54
55#include "mb/pg_wchar.h"
56
57#include "miscadmin.h" /* needed by rcancelrequested/rstacktoodeep */
58
59
60/* overrides for regguts.h definitions, if any */
61#define FUNCPTR(name, args) (*name) args
62#define MALLOC(n) malloc(n)
63#define FREE(p) free(VS(p))
64#define REALLOC(p,n) realloc(VS(p),n)
65#define assert(x) Assert(x)
66
67/* internal character type and related */
68typedef pg_wchar chr; /* the type itself */
69typedef unsigned uchr; /* unsigned type that will hold a chr */
70
71#define CHR(c) ((unsigned char) (c)) /* turn char literal into chr literal */
72#define DIGITVAL(c) ((c)-'0') /* turn chr digit into its value */
73#define CHRBITS 32 /* bits in a chr; must not use sizeof */
74#define CHR_MIN 0x00000000 /* smallest and largest chr; the value */
75#define CHR_MAX 0x7ffffffe /* CHR_MAX-CHR_MIN+1 must fit in an int, and
76 * CHR_MAX+1 must fit in a chr variable */
77
78/*
79 * Check if a chr value is in range. Ideally we'd just write this as
80 * ((c) >= CHR_MIN && (c) <= CHR_MAX)
81 * However, if chr is unsigned and CHR_MIN is zero, the first part of that
82 * is a no-op, and certain overly-nannyish compilers give warnings about it.
83 * So we leave that out here. If you want to make chr signed and/or CHR_MIN
84 * not zero, redefine this macro as above. Callers should assume that the
85 * macro may multiply evaluate its argument, even though it does not today.
86 */
87#define CHR_IS_IN_RANGE(c) ((c) <= CHR_MAX)
88
89/*
90 * MAX_SIMPLE_CHR is the cutoff between "simple" and "complicated" processing
91 * in the color map logic. It should usually be chosen high enough to ensure
92 * that all common characters are <= MAX_SIMPLE_CHR. However, very large
93 * values will be counterproductive since they cause more regex setup time.
94 * Also, small values can be helpful for testing the high-color-map logic
95 * with plain old ASCII input.
96 */
97#define MAX_SIMPLE_CHR 0x7FF /* suitable value for Unicode */
98
99/* functions operating on chr */
100#define iscalnum(x) pg_wc_isalnum(x)
101#define iscalpha(x) pg_wc_isalpha(x)
102#define iscdigit(x) pg_wc_isdigit(x)
103#define iscspace(x) pg_wc_isspace(x)
104
105/* and pick up the standard header */
106#include "regex.h"
107