shithub: riscv

ref: 2e9835e771c54cb9a0c9cd81012e7b4b75f878f7
dir: /sys/src/ape/cmd/pax/regexp.h/

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

#ifndef _PAX_REGEXP_H
#define _PAX_REGEXP_H

#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

extern regexp *regcomp();
extern int regexec();
extern void regsub();
extern void regerror();

#endif /* _PAX_REGEXP_H */