init

db_include/regex/regcustom.h

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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"