text: /*
   * 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.
   *
   * $PostgreSQL: pgsql/src/include/regex/regcustom.h,v 1.8 2009/12/01 21:00:24 tgl Exp $
   */
  
  /* 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 0xfffffffe		/* CHR_MAX-CHR_MIN+1 should fit in uchr */
  
  /* 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"
  