usr/include/regexp.h

/*
 * Copyright (c) 1986 by University of Toronto.
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley
 * by Henry Spencer.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that: (1) source distributions retain this entire copyright
 * notice and comment, and (2) distributions including binaries display
 * the following acknowledgement:  ``This product includes software
 * developed by the University of California, Berkeley and its contributors''
 * in the documentation or other materials provided with the distribution
 * and in all advertising materials mentioning features or use of this
 * software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *      @(#)regexp.h    1.5 (Berkeley) 6/1/90
 */

/*
 * Definitions etc. for regexp(3) routines.
 *
 * Caveat:  this is V8 regexp(3) [actually, a reimplementation thereof],
 * not the System V one.
 */
#define NSUBEXP  10
typedef struct regexp {
        char *startp[NSUBEXP];
        char *endp[NSUBEXP];
        char regstart;          /* Internal use only. */
        char reganch;           /* Internal use only. */
        char *regmust;          /* Internal use only. */
        int regmlen;            /* Internal use only. */
        char program[1];        /* Unwarranted chumminess with compiler. */
} regexp;

#if __STDC__ || c_plusplus
extern regexp *regcomp(const char *);
extern int regexec(const  regexp *, const char *);
extern void regsub(const  regexp *, const char *, char *);
extern void regerror(const char *);
#else
extern regexp *regcomp();
extern int regexec();
extern void regsub();
extern void regerror();
#endif