+++ /dev/null
-/*-
- * Copyright (c) 1992, 1993, 1994 Henry Spencer.
- * Copyright (c) 1992, 1993, 1994
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Henry Spencer.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)regexec.c 8.3 (Berkeley) 3/20/94
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)regexec.c 8.3 (Berkeley) 3/20/94";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/regex/regexec.c,v 1.8 2007/06/11 03:05:54 delphij Exp $");
-
-#include "xlocale_private.h"
-
-/*
- * the outer shell of regexec()
- *
- * This file includes engine.c three times, after muchos fiddling with the
- * macros that code uses. This lets the same code operate on two different
- * representations for state sets and characters.
- */
-#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; /* for use in asserts; shuts lint up */
-
-static __inline size_t
-xmbrtowc(wint_t *wi, const char *s, size_t n, mbstate_t *mbs, wint_t dummy, locale_t loc)
-{
- size_t nr;
- wchar_t wc;
-
- nr = mbrtowc_l(&wc, s, n, mbs, loc);
- 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(wint_t *wi,
- const char *s,
- size_t n __unused,
- mbstate_t *mbs __unused,
- wint_t dummy __unused,
- locale_t loc __unused)
-{
-
- if (wi != NULL)
- *wi = (unsigned char)*s;
- return (1);
-}
-
-/* macros for manipulating states, small version */
-#define states long
-#define states1 states /* for later use in regexec() decision */
-#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 /* dummy version */
-#define STATESETUP(m, n) /* nothing */
-#define STATETEARDOWN(m) /* nothing */
-#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)
-/* some abbreviations; note that some of these know variable names! */
-/* do "if I'm here, I can also be there" etc without branches */
-#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)
-/* no multibyte support */
-#define XMBRTOWC xmbrtowc_dummy
-#define ZAPSTATE(mbs) ((void)(mbs))
-/* function names */
-#define SNAMES /* engine.c looks after details */
-
-#include "engine.c"
-
-/* now undo things */
-#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
-
-/* macros for manipulating states, large version */
-#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])
-/* some abbreviations; note that some of these know variable names! */
-/* do "if I'm here, I can also be there" etc without branches */
-#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)])
-/* no multibyte support */
-#define XMBRTOWC xmbrtowc_dummy
-#define ZAPSTATE(mbs) ((void)(mbs))
-/* function names */
-#define LNAMES /* flag */
-
-#undef __FBSDID
-#define __FBSDID(x)
-#include "engine.c"
-
-/* multibyte character & large states version */
-#undef LNAMES
-#undef XMBRTOWC
-#undef ZAPSTATE
-#define XMBRTOWC xmbrtowc
-#define ZAPSTATE(mbs) memset((mbs), 0, sizeof(*(mbs)))
-#define MNAMES
-
-#include "engine.c"
-
-/*
- - regexec - interface for matching
- = extern int regexec(const regex_t *, const char *, size_t, \
- = regmatch_t [], int);
- = #define REG_NOTBOL 00001
- = #define REG_NOTEOL 00002
- = #define REG_STARTEND 00004
- = #define REG_TRACE 00400 // tracing of execution
- = #define REG_LARGE 01000 // force large representation
- = #define REG_BACKR 02000 // force use of backref code
- *
- * We put this here so we can exploit knowledge of the state representation
- * when choosing which matcher to call. Also, by this point the matchers
- * have been prototyped.
- */
-int /* 0 success, REG_NOMATCH failure */
-regexec(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) /* backstop for no-debug case */
- return(REG_BADPAT);
- eflags = GOODFLAGS(eflags);
-
- g->loc = __current_locale();
- if (MB_CUR_MAX_L(g->loc) > 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));
-}
projects / apple / libc.git / blobdiff