/*
* Changes by Gunnar Ritter, Freiburg i. Br., Germany, November 2002.
*
* Sccsid @(#)regex.h 1.13 (gritter) 2/6/05
*/
/* UNIX(R) Regular Expresssion Library
*
* Note: Code is released under the GNU LGPL
*
* Copyright (C) 2001 Caldera International, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to:
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef LIBUXRE_REGEX_H
#define LIBUXRE_REGEX_H
/* from unixsrc:usr/src/common/head/regex.h /main/uw7_nj/1 */
#include <sys/types.h> /* really only want [s]size_t */
/*
* Official regexec() flags.
*/
#define REG_NOTBOL 0x000001 /* start of string does not match ^ */
#define REG_NOTEOL 0x000002 /* end of string does not match $ */
/*
* Additional regexec() flags.
*/
#define REG_NONEMPTY 0x000004 /* do not match empty at start of string */
/*
* Extensions to provide individual control over each
* of the differences between basic and extended REs.
*/
#define REG_OR 0x0000001 /* enable | operator */
#define REG_PLUS 0x0000002 /* enable + operator */
#define REG_QUEST 0x0000004 /* enable ? operator */
#define REG_BRACES 0x0000008 /* use {m,n} (instead of \{m,n\}) */
#define REG_PARENS 0x0000010 /* use (...) [instead of \(...\)] */
#define REG_ANCHORS 0x0000020 /* ^ and $ are anchors anywhere */
#define REG_NOBACKREF 0x0000040 /* disable \digit */
#define REG_NOAUTOQUOTE 0x0000080 /* no automatic quoting of REG_BADRPTs */
/*
* Official regcomp() flags.
*/
#define REG_EXTENDED (REG_OR | REG_PLUS | REG_QUEST | REG_BRACES | \
REG_PARENS | REG_ANCHORS | \
REG_NOBACKREF | REG_NOAUTOQUOTE)
#define REG_ICASE 0x0000100 /* ignore case */
#define REG_NOSUB 0x0000200 /* only success/fail for regexec() */
#define REG_NEWLINE 0x0000400 /* take \n as line separator for ^ and $ */
/*
* Additional regcomp() flags.
* Some of these assume that int is >16 bits!
* Beware: 0x20000000 and above are used in re.h.
*/
#define REG_ONESUB 0x0000800 /* regexec() only needs pmatch[0] */
#define REG_MTPARENFAIL 0x0001000 /* take empty \(\) or () as match failure */
#define REG_MTPARENBAD 0x0002000 /* disallow empty \(\) or () */
#define REG_BADRANGE 0x0004000 /* accept [m-a] ranges as [ma] */
#define REG_ODDRANGE 0x0008000 /* oawk oddity: [m-a] means [m] */
#define REG_SEPRANGE 0x0010000 /* disallow [a-m-z] style ranges */
#define REG_BKTQUOTE 0x0020000 /* allow \ in []s to quote \, -, ^ or ] */
#define REG_BKTEMPTY 0x0040000 /* allow empty []s (w/BKTQUOTE, BKTESCAPE) */
#define REG_ANGLES 0x0080000 /* enable \<, \> operators */
#define REG_ESCNL 0x0100000 /* take \n as newline character */
#define REG_NLALT 0x0200000 /* take newline as alternation */
#define REG_ESCSEQ 0x0400000 /* otherwise, take \ as start of C escapes */
#define REG_BKTESCAPE 0x0800000 /* allow \ in []s to quote next anything */
#define REG_NOBRACES 0x1000000 /* disable {n,m} */
#define REG_ADDITIVE 0x2000000 /* a+*b means + and * additive, ^+ is valid */
#define REG_NOI18N 0x4000000 /* disable I18N features ([::] etc.) */
#define REG_OLDESC 0x8000000 /* recognize \b \f \n \r \t \123 only */
#define REG_AVOIDNULL 0x10000000/* avoid null subexpression matches */
#define REG_OLDBRE (REG_BADRANGE | REG_ANGLES | REG_ESCNL)
#define REG_OLDERE (REG_OR | REG_PLUS | REG_QUEST | REG_NOBRACES | \
REG_PARENS | REG_ANCHORS | REG_ODDRANGE | \
REG_NOBACKREF | REG_ADDITIVE | REG_NOAUTOQUOTE)
/*
* Error return values.
*/
#define REG_ENOSYS (-1) /* unsupported */
#define REG_NOMATCH 1 /* regexec() failed to match */
#define REG_BADPAT 2 /* invalid regular expression */
#define REG_ECOLLATE 3 /* invalid collating element construct */
#define REG_ECTYPE 4 /* invalid character class construct */
#define REG_EEQUIV 5 /* invalid equivalence class construct */
#define REG_EBKTCHAR 6 /* invalid character in [] construct */
#define REG_EESCAPE 7 /* trailing \ in pattern */
#define REG_ESUBREG 8 /* number in \digit invalid or in error */
#define REG_EBRACK 9 /* [] imbalance */
#define REG_EMPTYSUBBKT 10 /* empty sub-bracket construct */
#define REG_EMPTYPAREN 11 /* empty \(\) or () [REG_MTPARENBAD] */
#define REG_NOPAT 12 /* no (empty) pattern */
#define REG_EPAREN 13 /* \(\) or () imbalance */
#define REG_EBRACE 14 /* \{\} or {} imbalance */
#define REG_BADBR 15 /* contents of \{\} or {} invalid */
#define REG_ERANGE 16 /* invalid endpoint in expression */
#define REG_ESPACE 17 /* out of memory */
#define REG_BADRPT 18 /* *,+,?,\{\} or {} not after r.e. */
#define REG_BADESC 19 /* invalid escape sequence (e.g. \0) */
#define REG_ILLSEQ 20 /* illegal byte sequence */
typedef struct
{
size_t re_nsub; /* only advertised member */
unsigned long re_flags; /* augmented regcomp() flags */
struct re_dfa_ *re_dfa; /* DFA engine */
struct re_nfa_ *re_nfa; /* NFA engine */
struct re_coll_ *re_col; /* current collation info */
int re_mb_cur_max; /* MB_CUR_MAX acceleration */
void *re_more; /* just in case... */
} regex_t;
typedef ssize_t regoff_t;
typedef struct
{
regoff_t rm_so;
regoff_t rm_eo;
} regmatch_t;
#ifdef __cplusplus
extern "C" {
#endif
int regcomp(regex_t *, const char *, int);
int regexec(const regex_t *, const char *, size_t, regmatch_t *, int);
size_t regerror(int, const regex_t *, char *, size_t);
void regfree(regex_t *);
#ifdef __cplusplus
}
#endif
#endif /* !LIBUXRE_REGEX_H */
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