diff options
Diffstat (limited to 'regex/regexec.c')
| -rw-r--r-- | regex/regexec.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/regex/regexec.c b/regex/regexec.c deleted file mode 100644 index bbfe094c96..0000000000 --- a/regex/regexec.c +++ /dev/null @@ -1,138 +0,0 @@ -/* - * 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 <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <limits.h> -#include <ctype.h> -#include <regex.h> - -#include "utils.h" -#include "regex2.h" - -#define PHP_REGEX_NOPE 0; /* for use in asserts; shuts lint up */ - -/* macros for manipulating states, small version */ -#define states unsigned -#define states1 unsigned /* for later use in regexec() decision */ -#define CLEAR(v) ((v) = 0) -#define SET0(v, n) ((v) &= ~((unsigned)1 << (n))) -#define SET1(v, n) ((v) |= (unsigned)1 << (n)) -#define ISSET(v, n) ((v) & ((unsigned)1 << (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 unsigned -#define INIT(o, n) ((o) = (unsigned)1 << (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) |= ((unsigned)(src)&(here)) << (n)) -#define BACK(dst, src, n) ((dst) |= ((unsigned)(src)&(here)) >> (n)) -#define ISSETBACK(v, n) ((v) & ((unsigned)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 unsigned 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; unsigned 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 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 - = API_EXPORT(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. - */ -API_EXPORT(int) /* 0 success, REG_NOMATCH failure */ -regexec(preg, string, nmatch, pmatch, eflags) -const regex_t *preg; -const char *string; -size_t nmatch; -regmatch_t pmatch[]; -int eflags; -{ - register 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 (g->nstates <= CHAR_BIT*sizeof(states1) && !(eflags®_LARGE)) - return(smatcher(g, (unsigned char *)string, nmatch, pmatch, eflags)); - else - return(lmatcher(g, (unsigned char *)string, nmatch, pmatch, eflags)); -} |