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Diffstat (limited to 'src/backend/regex/regexec.c')
| -rw-r--r-- | src/backend/regex/regexec.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/src/backend/regex/regexec.c b/src/backend/regex/regexec.c deleted file mode 100644 index 06459ef1dbc..00000000000 --- a/src/backend/regex/regexec.c +++ /dev/null @@ -1,194 +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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 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 - */ - -#include "postgres.h" - -/* - * the outer shell of regexec() - * - * This file includes engine.c *twice*, after muchos fiddling with the - * macros that code uses. This lets the same code operate on two different - * representations for state sets. - */ -#include <sys/types.h> -#include <limits.h> -#include <ctype.h> -#include <assert.h> - -#include "regex/regex.h" -#include "regex/utils.h" -#include "regex/regex2.h" - -static int nope = 0; /* for use in asserts; shuts lint up */ - -/* 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) &= ~(1L << (n))) -#define SET1(v, n) ((v) |= (1L << (n))) -#define ISSET(v, n) ((v) & (1L << (n))) -#define ASSIGN(d, s) ((d) = (s)) -#define EQ(a, b) ((a) == (b)) -#define STATEVARS int 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) = (1L << (n))) -#define INC(o) ((o) <<= 1) -#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) |= ((src) & (here)) << (n)) -#define BACK(dst, src, n) ((dst) |= ((src) & (here)) >> (n)) -#define ISSETBACK(v, n) ((v) & (here >> (n))) -/* 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 - -/* 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 int vn; char *space -#define STATESETUP(m, nv) \ -do { \ - (m)->space = malloc((nv)*(m)->g->nstates); \ - if ((m)->space == NULL) \ - return(REG_ESPACE); \ - (m)->vn = 0; \ -} while (0) - -#define STATETEARDOWN(m) \ -do { \ - free((m)->space); \ -} while (0) - -#define SETUP(v) ((v) = &m->space[m->vn++ * m->g->nstates]) -#define onestate int -#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)]) -/* function names */ -#define LNAMES /* flag */ - -#include "engine.c" - -/* - * regexec - interface for matching - * - * We put this here so we can exploit knowledge of the state representation - * when choosing which matcher to call. - */ -int /* 0 success, REG_NOMATCH failure */ -pg_regexec(const regex_t *preg, const char *string, size_t nmatch, - regmatch_t *pmatch, int eflags) -{ - struct re_guts *g = preg->re_g; - -#ifdef MULTIBYTE - pg_wchar *str; - int sts; -#endif - -#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); - -#ifdef MULTIBYTE - str = (pg_wchar *) malloc((strlen(string) + 1) * sizeof(pg_wchar)); - if (!str) - return (REG_ESPACE); - (void) pg_mb2wchar((unsigned char *) string, str); - if (g->nstates <= CHAR_BIT * sizeof(states1) && !(eflags & REG_LARGE)) - sts = smatcher(g, str, nmatch, pmatch, eflags); - else - sts = lmatcher(g, str, nmatch, pmatch, eflags); - free((char *) str); - return (sts); - -#else - - if (g->nstates <= CHAR_BIT * sizeof(states1) && !(eflags & REG_LARGE)) - return smatcher(g, (pg_wchar *) string, nmatch, pmatch, eflags); - else - return lmatcher(g, (pg_wchar *) string, nmatch, pmatch, eflags); -#endif -} |