#ifndef _H_REGEXP
#define _H_REGEXP

/*
 * 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;


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

/* Headers for regexp.c */
extern regexp *regcomp(char *exp);
extern int regexec(regexp *prog, char *string);
extern void regsub(regexp *prog, char *source, char *dest);
extern void regerror(char *s);
/* End of headers for regexp.c */

#ifdef DEBUG
extern void regdump(regexp *r);
#endif

#endif /* _H_REGEXP */