98 lines
4.0 KiB
C
98 lines
4.0 KiB
C
/*
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* Copyright (c) 1998, 1999 Henry Spencer. All rights reserved.
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*
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* Development of this software was funded, in part, by Cray Research Inc.,
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* UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
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* Corporation, none of whom are responsible for the results. The author
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* thanks all of them.
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*
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* Redistribution and use in source and binary forms -- with or without
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* modification -- are permitted for any purpose, provided that
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* redistributions in source form retain this entire copyright notice and
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* indicate the origin and nature of any modifications.
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*
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* I'd appreciate being given credit for this package in the documentation
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* of software which uses it, but that is not a requirement.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* src/include/regex/regcustom.h
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*/
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/* headers if any */
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/*
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* It's against Postgres coding conventions to include postgres.h in a
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* header file, but we allow the violation here because the regexp library
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* files specifically intend this file to supply application-dependent
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* headers, and are careful to include this file before anything else.
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*/
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#include "postgres.h"
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#include <ctype.h>
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#include <limits.h>
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#include <wctype.h>
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#include "mb/pg_wchar.h"
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#include "miscadmin.h" /* needed by rstacktoodeep */
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/* overrides for regguts.h definitions, if any */
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#define FUNCPTR(name, args) (*name) args
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#define MALLOC(n) palloc_extended((n), MCXT_ALLOC_NO_OOM)
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#define FREE(p) pfree(VS(p))
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#define REALLOC(p,n) repalloc_extended(VS(p),(n), MCXT_ALLOC_NO_OOM)
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#define INTERRUPT(re) CHECK_FOR_INTERRUPTS()
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#define assert(x) Assert(x)
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/* internal character type and related */
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typedef pg_wchar chr; /* the type itself */
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typedef unsigned uchr; /* unsigned type that will hold a chr */
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#define CHR(c) ((unsigned char) (c)) /* turn char literal into chr literal */
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#define DIGITVAL(c) ((c)-'0') /* turn chr digit into its value */
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#define CHRBITS 32 /* bits in a chr; must not use sizeof */
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#define CHR_MIN 0x00000000 /* smallest and largest chr; the value */
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#define CHR_MAX 0x7ffffffe /* CHR_MAX-CHR_MIN+1 must fit in an int, and
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* CHR_MAX+1 must fit in a chr variable */
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/*
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* Check if a chr value is in range. Ideally we'd just write this as
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* ((c) >= CHR_MIN && (c) <= CHR_MAX)
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* However, if chr is unsigned and CHR_MIN is zero, the first part of that
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* is a no-op, and certain overly-nannyish compilers give warnings about it.
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* So we leave that out here. If you want to make chr signed and/or CHR_MIN
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* not zero, redefine this macro as above. Callers should assume that the
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* macro may multiply evaluate its argument, even though it does not today.
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*/
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#define CHR_IS_IN_RANGE(c) ((c) <= CHR_MAX)
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/*
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* MAX_SIMPLE_CHR is the cutoff between "simple" and "complicated" processing
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* in the color map logic. It should usually be chosen high enough to ensure
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* that all common characters are <= MAX_SIMPLE_CHR. However, very large
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* values will be counterproductive since they cause more regex setup time.
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* Also, small values can be helpful for testing the high-color-map logic
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* with plain old ASCII input.
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*/
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#define MAX_SIMPLE_CHR 0x7FF /* suitable value for Unicode */
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/* functions operating on chr */
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#define iscalnum(x) pg_wc_isalnum(x)
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#define iscalpha(x) pg_wc_isalpha(x)
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#define iscdigit(x) pg_wc_isdigit(x)
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#define iscspace(x) pg_wc_isspace(x)
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/* and pick up the standard header */
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#include "regex.h"
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