codekingpro/portable-devtools

1#ifndef _REGEX_H_2#define _REGEX_H_				/* never again */3/*4 * regular expressions5 *6 * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.7 *8 * Development of this software was funded, in part, by Cray Research Inc.,9 * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics10 * Corporation, none of whom are responsible for the results.  The author11 * thanks all of them.12 *13 * Redistribution and use in source and binary forms -- with or without14 * modification -- are permitted for any purpose, provided that15 * redistributions in source form retain this entire copyright notice and16 * indicate the origin and nature of any modifications.17 *18 * I'd appreciate being given credit for this package in the documentation19 * of software which uses it, but that is not a requirement.20 *21 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,22 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY23 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL24 * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF30 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.31 *32 * src/include/regex/regex.h33 */34 35/*36 * Add your own defines, if needed, here.37 */38#include "mb/pg_wchar.h"39 40/*41 * interface types etc.42 */43 44/*45 * regoff_t has to be large enough to hold either off_t or ssize_t,46 * and must be signed; it's only a guess that long is suitable.47 */48typedef long regoff_t;49 50/*51 * other interface types52 */53 54/* the biggie, a compiled RE (or rather, a front end to same) */55typedef struct56{57	int			re_magic;		/* magic number */58	size_t		re_nsub;		/* number of subexpressions */59	long		re_info;		/* bitmask of the following flags: */60#define  REG_UBACKREF		000001	/* has back-reference (\n) */61#define  REG_ULOOKAROUND	000002	/* has lookahead/lookbehind constraint */62#define  REG_UBOUNDS		000004	/* has bounded quantifier ({m,n}) */63#define  REG_UBRACES		000010	/* has { that doesn't begin a quantifier */64#define  REG_UBSALNUM		000020	/* has backslash-alphanumeric in non-ARE */65#define  REG_UPBOTCH		000040	/* has unmatched right paren in ERE (legal66									 * per spec, but that was a mistake) */67#define  REG_UBBS			000100	/* has backslash within bracket expr */68#define  REG_UNONPOSIX		000200	/* has any construct that extends POSIX */69#define  REG_UUNSPEC		000400	/* has any case disallowed by POSIX, e.g.70									 * an empty branch */71#define  REG_UUNPORT		001000	/* has numeric character code dependency */72#define  REG_ULOCALE		002000	/* has locale dependency */73#define  REG_UEMPTYMATCH	004000	/* can match a zero-length string */74#define  REG_UIMPOSSIBLE	010000	/* provably cannot match anything */75#define  REG_USHORTEST		020000	/* has non-greedy quantifier */76	int			re_csize;		/* sizeof(character) */77	char	   *re_endp;		/* backward compatibility kludge */78	Oid			re_collation;	/* Collation that defines LC_CTYPE behavior */79	/* the rest is opaque pointers to hidden innards */80	char	   *re_guts;		/* `char *' is more portable than `void *' */81	char	   *re_fns;82} regex_t;83 84/* result reporting (may acquire more fields later) */85typedef struct86{87	regoff_t	rm_so;			/* start of substring */88	regoff_t	rm_eo;			/* end of substring */89} regmatch_t;90 91/* supplementary control and reporting */92typedef struct93{94	regmatch_t	rm_extend;		/* see REG_EXPECT */95} rm_detail_t;96 97 98 99/*100 * regex compilation flags101 */102#define REG_BASIC	000000		/* BREs (convenience) */103#define REG_EXTENDED	000001	/* EREs */104#define REG_ADVF	000002		/* advanced features in EREs */105#define REG_ADVANCED	000003	/* AREs (which are also EREs) */106#define REG_QUOTE	000004		/* no special characters, none */107#define REG_NOSPEC	REG_QUOTE	/* historical synonym */108#define REG_ICASE	000010		/* ignore case */109#define REG_NOSUB	000020		/* caller doesn't need subexpr match data */110#define REG_EXPANDED	000040	/* expanded format, white space & comments */111#define REG_NLSTOP	000100		/* \n doesn't match . or [^ ] */112#define REG_NLANCH	000200		/* ^ matches after \n, $ before */113#define REG_NEWLINE 000300		/* newlines are line terminators */114#define REG_PEND	000400		/* ugh -- backward-compatibility hack */115#define REG_EXPECT	001000		/* report details on partial/limited matches */116#define REG_BOSONLY 002000		/* temporary kludge for BOS-only matches */117#define REG_DUMP	004000		/* none of your business :-) */118#define REG_FAKE	010000		/* none of your business :-) */119#define REG_PROGRESS	020000	/* none of your business :-) */120 121 122 123/*124 * regex execution flags125 */126#define REG_NOTBOL	0001		/* BOS is not BOL */127#define REG_NOTEOL	0002		/* EOS is not EOL */128#define REG_STARTEND	0004	/* backward compatibility kludge */129#define REG_FTRACE	0010		/* none of your business */130#define REG_MTRACE	0020		/* none of your business */131#define REG_SMALL	0040		/* none of your business */132 133 134/*135 * error reporting136 * Be careful if modifying the list of error codes -- the table used by137 * regerror() is generated automatically from this file!138 */139#define REG_OKAY	 0			/* no errors detected */140#define REG_NOMATCH  1			/* failed to match */141#define REG_BADPAT	 2			/* invalid regexp */142#define REG_ECOLLATE	 3		/* invalid collating element */143#define REG_ECTYPE	 4			/* invalid character class */144#define REG_EESCAPE  5			/* invalid escape \ sequence */145#define REG_ESUBREG  6			/* invalid backreference number */146#define REG_EBRACK	 7			/* brackets [] not balanced */147#define REG_EPAREN	 8			/* parentheses () not balanced */148#define REG_EBRACE	 9			/* braces {} not balanced */149#define REG_BADBR	10			/* invalid repetition count(s) */150#define REG_ERANGE	11			/* invalid character range */151#define REG_ESPACE	12			/* out of memory */152#define REG_BADRPT	13			/* quantifier operand invalid */153#define REG_ASSERT	15			/* "can't happen" -- you found a bug */154#define REG_INVARG	16			/* invalid argument to regex function */155#define REG_MIXED	17			/* character widths of regex and string differ */156#define REG_BADOPT	18			/* invalid embedded option */157#define REG_ETOOBIG 19			/* regular expression is too complex */158#define REG_ECOLORS 20			/* too many colors */159/* two specials for debugging and testing */160#define REG_ATOI	101			/* convert error-code name to number */161#define REG_ITOA	102			/* convert error-code number to name */162/* non-error result codes for pg_regprefix */163#define REG_PREFIX	(-1)		/* identified a common prefix */164#define REG_EXACT	(-2)		/* identified an exact match */165 166 167 168/*169 * the prototypes for exported functions170 */171 172/* regcomp.c */173extern int	pg_regcomp(regex_t *re, const pg_wchar *string, size_t len,174					   int flags, Oid collation);175extern int	pg_regexec(regex_t *re, const pg_wchar *string, size_t len,176					   size_t search_start, rm_detail_t *details,177					   size_t nmatch, regmatch_t pmatch[], int flags);178extern int	pg_regprefix(regex_t *re, pg_wchar **string, size_t *slength);179extern void pg_regfree(regex_t *re);180extern size_t pg_regerror(int errcode, const regex_t *preg, char *errbuf,181						  size_t errbuf_size);182 183/* regexp.c */184extern regex_t *RE_compile_and_cache(text *text_re, int cflags, Oid collation);185extern bool RE_compile_and_execute(text *text_re, char *dat, int dat_len,186								   int cflags, Oid collation,187								   int nmatch, regmatch_t *pmatch);188 189#endif							/* _REGEX_H_ */190