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/*
* Copyright (c) 1998, 1999 Henry Spencer. All rights reserved.
*
* Development of this software was funded, in part, by Cray Research Inc.,
* UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
* Corporation, none of whom are responsible for the results. The author
* thanks all of them.
*
* Redistribution and use in source and binary forms -- with or without
* modification -- are permitted for any purpose, provided that
* redistributions in source form retain this entire copyright notice and
* indicate the origin and nature of any modifications.
*
* I'd appreciate being given credit for this package in the documentation
* of software which uses it, but that is not a requirement.
*
* THIS SOFTWARE IS PROVIDED ``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
* HENRY SPENCER 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.
*
* src/include/regex/regcustom.h
*/
/* headers if any */
/*
* It's against Postgres coding conventions to include postgres.h in a
* header file, but we allow the violation here because the regexp library
* files specifically intend this file to supply application-dependent
* headers, and are careful to include this file before anything else.
*/
#include "postgres.h"
#include <ctype.h>
#include <limits.h>
/*
* towlower() and friends should be in <wctype.h>, but some pre-C99 systems
* declare them in <wchar.h>, so include that too.
*/
#include <wchar.h>
#ifdef HAVE_WCTYPE_H
#include <wctype.h>
#endif
#include "mb/pg_wchar.h"
#include "miscadmin.h" /* needed by rcancelrequested/rstacktoodeep */
/* overrides for regguts.h definitions, if any */
#define FUNCPTR(name, args) (*name) args
#define MALLOC(n) malloc(n)
#define FREE(p) free(VS(p))
#define REALLOC(p,n) realloc(VS(p),n)
#define assert(x) Assert(x)
/* internal character type and related */
typedef pg_wchar chr; /* the type itself */
typedef unsigned uchr; /* unsigned type that will hold a chr */
#define CHR(c) ((unsigned char) (c)) /* turn char literal into chr literal */
#define DIGITVAL(c) ((c)-'0') /* turn chr digit into its value */
#define CHRBITS 32 /* bits in a chr; must not use sizeof */
#define CHR_MIN 0x00000000 /* smallest and largest chr; the value */
#define CHR_MAX 0x7ffffffe /* CHR_MAX-CHR_MIN+1 must fit in an int, and
* CHR_MAX+1 must fit in a chr variable */
/*
* Check if a chr value is in range. Ideally we'd just write this as
* ((c) >= CHR_MIN && (c) <= CHR_MAX)
* However, if chr is unsigned and CHR_MIN is zero, the first part of that
* is a no-op, and certain overly-nannyish compilers give warnings about it.
* So we leave that out here. If you want to make chr signed and/or CHR_MIN
* not zero, redefine this macro as above. Callers should assume that the
* macro may multiply evaluate its argument, even though it does not today.
*/
#define CHR_IS_IN_RANGE(c) ((c) <= CHR_MAX)
/*
* MAX_SIMPLE_CHR is the cutoff between "simple" and "complicated" processing
* in the color map logic. It should usually be chosen high enough to ensure
* that all common characters are <= MAX_SIMPLE_CHR. However, very large
* values will be counterproductive since they cause more regex setup time.
* Also, small values can be helpful for testing the high-color-map logic
* with plain old ASCII input.
*/
#define MAX_SIMPLE_CHR 0x7FF /* suitable value for Unicode */
/* functions operating on chr */
#define iscalnum(x) pg_wc_isalnum(x)
#define iscalpha(x) pg_wc_isalpha(x)
#define iscdigit(x) pg_wc_isdigit(x)
#define iscspace(x) pg_wc_isspace(x)
/* and pick up the standard header */
#include "regex.h"
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