regex_impl.h

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/*-
 * This code is derived from OpenBSD's libc/regex, original license follows:
 *
 * Copyright (c) 1992 Henry Spencer.
 * Copyright (c) 1992, 1993
 *  The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Henry Spencer of the University of Toronto.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
 *
 *  @(#)regex.h 8.1 (Berkeley) 6/2/93
 */

#ifndef _REGEX_H_
#define _REGEX_H_

#include <sys/types.h>
typedef off_t llvm_regoff_t;
typedef struct {
  llvm_regoff_t rm_so;    /* start of match */
  llvm_regoff_t rm_eo;    /* end of match */
} llvm_regmatch_t;

typedef struct llvm_regex {
  int re_magic;
  size_t re_nsub;   /* number of parenthesized subexpressions */
  const char *re_endp;  /* end pointer for REG_PEND */
  struct re_guts *re_g; /* none of your business :-) */
} llvm_regex_t;

/* llvm_regcomp() flags */
#define REG_BASIC 0000
#define REG_EXTENDED  0001
#define REG_ICASE 0002
#define REG_NOSUB 0004
#define REG_NEWLINE 0010
#define REG_NOSPEC  0020
#define REG_PEND  0040
#define REG_DUMP  0200

/* llvm_regerror() flags */
#define REG_NOMATCH  1
#define REG_BADPAT   2
#define REG_ECOLLATE   3
#define REG_ECTYPE   4
#define REG_EESCAPE  5
#define REG_ESUBREG  6
#define REG_EBRACK   7
#define REG_EPAREN   8
#define REG_EBRACE   9
#define REG_BADBR 10
#define REG_ERANGE  11
#define REG_ESPACE  12
#define REG_BADRPT  13
#define REG_EMPTY 14
#define REG_ASSERT  15
#define REG_INVARG  16
#define REG_ATOI  255 /* convert name to number (!) */
#define REG_ITOA  0400  /* convert number to name (!) */

/* llvm_regexec() flags */
#define REG_NOTBOL  00001
#define REG_NOTEOL  00002
#define REG_STARTEND  00004
#define REG_TRACE 00400 /* tracing of execution */
#define REG_LARGE 01000 /* force large representation */
#define REG_BACKR 02000 /* force use of backref code */

#ifdef __cplusplus
extern "C" {
#endif

int llvm_regcomp(llvm_regex_t *, const char *, int);
size_t  llvm_regerror(int, const llvm_regex_t *, char *, size_t);
int llvm_regexec(const llvm_regex_t *, const char *, size_t, 
                     llvm_regmatch_t [], int);
void  llvm_regfree(llvm_regex_t *);
size_t  llvm_strlcpy(char *dst, const char *src, size_t siz);

#ifdef __cplusplus
}
#endif

#endif /* !_REGEX_H_ */