diff options
Diffstat (limited to 'winsup/cygwin/regex/regexec.c')
| -rw-r--r-- | winsup/cygwin/regex/regexec.c | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/winsup/cygwin/regex/regexec.c b/winsup/cygwin/regex/regexec.c deleted file mode 100644 index ad12ada41..000000000 --- a/winsup/cygwin/regex/regexec.c +++ /dev/null @@ -1,256 +0,0 @@ -/*- - * 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 $"); - -/* - * 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. - */ -#ifdef __CYGWIN__ -#include "winsup.h" -#endif -#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" - -#ifdef __CYGWIN__ -#define __unused __attribute__ ((unused)) -#endif - -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) -{ - 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 { - if (sizeof (wchar_t) == 2 && wc >= 0xd800 && wc <= 0xdbff) { - /* UTF-16 surrogate pair. Fetch second half and - compute UTF-32 value */ - size_t n2 = mbrtowc(&wc, s + nr, n - nr, mbs); - if (n2 == 0 || n2 == (size_t)-1 || n2 == (size_t)-2) { - memset(mbs, 0, sizeof(*mbs)); - if (wi != NULL) - *wi = dummy; - return (1); - } - if (wi != NULL) - *wi = (((*wi & 0x3ff) << 10) | (wc & 0x3ff)) - + 0x10000; - nr += n2; - } - 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) -{ - - 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 */ - -#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); - - 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)); -} |