regexp.h

/*
 * Definitions etc. for regexp(3) routines.
 *
 * Caveat:  this is V8 regexp(3) [actually, a reimplementation thereof],
 * not the System V one.
 */
#ifndef REGEXP_DWA20011023_H
# define REGEXP_DWA20011023_H

#define NSUBEXP  20
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;

regexp *regcomp(char *exp);
int regexec(regexp * prog, char *string);
void regerror(char *s);
void regsub(regexp * prog, char *source, char *dest);

/*
 * The first byte of the regexp internal "program" is actually this magic
 * number; the start node begins in the second byte.
 */
#define	MAGIC	0234

#endif