#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)regexec.c 8.3 (Berkeley) 3/20/94";
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/lib/libc/regex/regexec.c,v 1.6 2004/07/12 07:35:59 tjr Exp $");
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <ctype.h>
#include <regex.h>
#include <wchar.h>
#include <wctype.h>
#include "utils.h"
#include "regex2.h"
static int nope __unused = 0;
static __inline size_t
xmbrtowc(wi, s, n, mbs, dummy)
wint_t *wi;
const char *s;
size_t n;
mbstate_t *mbs;
wint_t dummy;
{
size_t nr;
wchar_t wc;
nr = mbrtowc(&wc, s, n, mbs);
if (wi != NULL)
*wi = wc;
if (nr == 0)
return (1);
else if (nr == (size_t)-1 || nr == (size_t)-2) {
memset(mbs, 0, sizeof(*mbs));
if (wi != NULL)
*wi = dummy;
return (1);
} else
return (nr);
}
static __inline size_t
xmbrtowc_dummy(wi, s, n, mbs, dummy)
wint_t *wi;
const char *s;
size_t n __unused;
mbstate_t *mbs __unused;
wint_t dummy __unused;
{
if (wi != NULL)
*wi = (unsigned char)*s;
return (1);
}
#define states long
#define states1 states
#define CLEAR(v) ((v) = 0)
#define SET0(v, n) ((v) &= ~((unsigned long)1 << (n)))
#define SET1(v, n) ((v) |= (unsigned long)1 << (n))
#define ISSET(v, n) (((v) & ((unsigned long)1 << (n))) != 0)
#define ASSIGN(d, s) ((d) = (s))
#define EQ(a, b) ((a) == (b))
#define STATEVARS long dummy
#define STATESETUP(m, n)
#define STATETEARDOWN(m)
#define SETUP(v) ((v) = 0)
#define onestate long
#define INIT(o, n) ((o) = (unsigned long)1 << (n))
#define INC(o) ((o) <<= 1)
#define ISSTATEIN(v, o) (((v) & (o)) != 0)
#define FWD(dst, src, n) ((dst) |= ((unsigned long)(src)&(here)) << (n))
#define BACK(dst, src, n) ((dst) |= ((unsigned long)(src)&(here)) >> (n))
#define ISSETBACK(v, n) (((v) & ((unsigned long)here >> (n))) != 0)
#define XMBRTOWC xmbrtowc_dummy
#define ZAPSTATE(mbs) ((void)(mbs))
#define SNAMES
#include "engine.c"
#undef states
#undef CLEAR
#undef SET0
#undef SET1
#undef ISSET
#undef ASSIGN
#undef EQ
#undef STATEVARS
#undef STATESETUP
#undef STATETEARDOWN
#undef SETUP
#undef onestate
#undef INIT
#undef INC
#undef ISSTATEIN
#undef FWD
#undef BACK
#undef ISSETBACK
#undef SNAMES
#undef XMBRTOWC
#undef ZAPSTATE
#define states char *
#define CLEAR(v) memset(v, 0, m->g->nstates)
#define SET0(v, n) ((v)[n] = 0)
#define SET1(v, n) ((v)[n] = 1)
#define ISSET(v, n) ((v)[n])
#define ASSIGN(d, s) memcpy(d, s, m->g->nstates)
#define EQ(a, b) (memcmp(a, b, m->g->nstates) == 0)
#define STATEVARS long vn; char *space
#define STATESETUP(m, nv) { (m)->space = malloc((nv)*(m)->g->nstates); \
if ((m)->space == NULL) return(REG_ESPACE); \
(m)->vn = 0; }
#define STATETEARDOWN(m) { free((m)->space); }
#define SETUP(v) ((v) = &m->space[m->vn++ * m->g->nstates])
#define onestate long
#define INIT(o, n) ((o) = (n))
#define INC(o) ((o)++)
#define ISSTATEIN(v, o) ((v)[o])
#define FWD(dst, src, n) ((dst)[here+(n)] |= (src)[here])
#define BACK(dst, src, n) ((dst)[here-(n)] |= (src)[here])
#define ISSETBACK(v, n) ((v)[here - (n)])
#define XMBRTOWC xmbrtowc_dummy
#define ZAPSTATE(mbs) ((void)(mbs))
#define LNAMES
#include "engine.c"
#undef LNAMES
#undef XMBRTOWC
#undef ZAPSTATE
#define XMBRTOWC xmbrtowc
#define ZAPSTATE(mbs) memset((mbs), 0, sizeof(*(mbs)))
#define MNAMES
#include "engine.c"
int
regexec(preg, string, nmatch, pmatch, eflags)
const regex_t * __restrict preg;
const char * __restrict string;
size_t nmatch;
regmatch_t pmatch[__restrict];
int eflags;
{
struct re_guts *g = preg->re_g;
#ifdef REDEBUG
# define GOODFLAGS(f) (f)
#else
# define GOODFLAGS(f) ((f)&(REG_NOTBOL|REG_NOTEOL|REG_STARTEND))
#endif
if (preg->re_magic != MAGIC1 || g->magic != MAGIC2)
return(REG_BADPAT);
assert(!(g->iflags&BAD));
if (g->iflags&BAD)
return(REG_BADPAT);
eflags = GOODFLAGS(eflags);
if (MB_CUR_MAX > 1)
return(mmatcher(g, (char *)string, nmatch, pmatch, eflags));
else if (g->nstates <= CHAR_BIT*sizeof(states1) && !(eflags®_LARGE))
return(smatcher(g, (char *)string, nmatch, pmatch, eflags));
else
return(lmatcher(g, (char *)string, nmatch, pmatch, eflags));
}