root/op/1.25/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 // REGEXP_DWA20011023_H