regexp.c File Reference

#include "regexp.h"
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>

Defines
#define	END   0
#define	BOL   1
#define	EOL   2
#define	ANY   3
#define	ANYOF   4
#define	ANYBUT   5
#define	BRANCH   6
#define	BACK   7
#define	EXACTLY   8
#define	NOTHING   9
#define	STAR   10
#define	PLUS   11
#define	WORDA   12
#define	WORDZ   13
#define	OPEN   20
#define	CLOSE   30
#define	OP(p)   (*(p))
#define	NEXT(p)   (((*((p)+1)&0377)<<8) + (*((p)+2)&0377))
#define	OPERAND(p)   ((p) + 3)
#define	UCHARAT(p)   ((int)*(unsigned char *)(p))
#define	FAIL(m)   { regerror(m); return(NULL); }
#define	ISMULT(c)   ((c) == '*' || (c) == '+' || (c) == '?')
#define	HASWIDTH   01
#define	SIMPLE   02
#define	SPSTART   04
#define	WORST   0
#define	STATIC   static
Functions
STATIC char *	reg (int paren, int *flagp)
STATIC char *	regbranch (int *flagp)
STATIC char *	regpiece (int *flagp)
STATIC char *	regatom (int *flagp)
STATIC char *	regnode (int op)
STATIC char *	regnext (register char *p)
STATIC void	regc (int b)
STATIC void	reginsert (char op, char *opnd)
STATIC void	regtail (char *p, char *val)
STATIC void	regoptail (char *p, char *val)
regexp *	regcomp (const char *exp)
STATIC int	regtry (regexp *prog, const char *string)
STATIC int	regmatch (char *prog)
STATIC int	regrepeat (char *p)
int	regexec (register regexp *prog, register const char *string)
void	regerror (const char *s)
Variables
static char *	regparse
static int	regnpar
static char	regdummy
static char *	regcode
static long	regsize
static const char *	reginput
static char *	regbol
static const char **	regstartp
static const char **	regendp

---

Define Documentation

#define ANY   3

#define ANYBUT   5

#define ANYOF   4

#define BACK   7

#define BOL   1

#define BRANCH   6

#define CLOSE   30

#define END   0

#define EOL   2

#define EXACTLY   8

#define FAIL

(

m

)

{ regerror(m); return(NULL); }

#define HASWIDTH   01

#define ISMULT

(

c

)

((c) == '*' || (c) == '+' || (c) == '?')

#define NEXT

(

p

)

(((*((p)+1)&0377)<<8) + (*((p)+2)&0377))

#define NOTHING   9

#define OP

(

p

)

(*(p))

#define OPEN   20

#define OPERAND

(

p

)

((p) + 3)

#define PLUS   11

#define SIMPLE   02

#define SPSTART   04

#define STAR   10

#define STATIC   static

#define UCHARAT

(

p

)

((int)*(unsigned char *)(p))

#define WORDA   12

#define WORDZ   13

#define WORST   0

---

Function Documentation

static char * reg	(	int	paren,
		int *	flagp
	)

static char * regatom

(

int *

flagp

)

static char * regbranch

(

int *

flagp

)

static void regc

(

int

b

)

regexp* regcomp

(

const char *

exp

)

void regerror

(

const char *

s

)

int regexec	(	register regexp *	prog,
		register const char *	string
	)

static void reginsert	(	char	op,
		char *	opnd
	)

static int regmatch

(

char *

prog

)

static char * regnext

(

register char *

p

)

static char * regnode

(

int

op

)

static void regoptail	(	char *	p,
		char *	val
	)

static char * regpiece

(

int *

flagp

)

static int regrepeat

(

char *

p

)

static void regtail	(	char *	p,
		char *	val
	)

static int regtry	(	regexp *	prog,
		const char *	string
	)

---

Variable Documentation

char* regbol [static]

char* regcode [static]

char regdummy [static]

const char** regendp [static]

const char* reginput [static]

int regnpar [static]

char* regparse [static]

long regsize [static]

const char** regstartp [static]

---