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Diffstat (limited to 'src/include/regex/regcustom.h')
| -rw-r--r-- | src/include/regex/regcustom.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/include/regex/regcustom.h b/src/include/regex/regcustom.h new file mode 100644 index 0000000..100c52d --- /dev/null +++ b/src/include/regex/regcustom.h @@ -0,0 +1,104 @@ +/* + * 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" |