mirror of
https://github.com/postgres/postgres.git
synced 2025-08-18 12:22:09 +03:00
e781baa640
Reportedly, some compilers warn about tests like "c < 0" if c is unsigned,
and hence complain about the character range checks I added in commit
3bb3f42f37. This is a bit of a pain since
the regex library doesn't really want to assume that chr is unsigned.
However, since any such reconfiguration would involve manual edits of
regcustom.h anyway, we can put it on the shoulders of whoever wants to
do that to adjust this new range-checking macro correctly.
Per gripes from Coverity and Andres.
90 lines
3.4 KiB
C
90 lines
3.4 KiB
C
/*
|
|
* 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 */
|
|
#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>.
|
|
*/
|
|
#ifdef HAVE_WCHAR_H
|
|
#include <wchar.h>
|
|
#endif
|
|
#ifdef HAVE_WCTYPE_H
|
|
#include <wctype.h>
|
|
#endif
|
|
|
|
#include "mb/pg_wchar.h"
|
|
|
|
|
|
/* 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 */
|
|
typedef int celt; /* type to hold chr, or NOCELT */
|
|
|
|
#define NOCELT (-1) /* celt value which is not valid 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 both chr and celt */
|
|
|
|
/*
|
|
* 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)
|
|
|
|
/* 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"
|